@import "tailwindcss";
@import "tw-animate-css";

@custom-variant dark (&:is(.dark *));

@theme inline {
  --color-background: var(--background);
  --color-foreground: var(--foreground);
  --font-sans: Arial, Helvetica, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --color-sidebar-ring: var(--sidebar-ring);
  --color-sidebar-border: var(--sidebar-border);
  --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
  --color-sidebar-accent: var(--sidebar-accent);
  --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
  --color-sidebar-primary: var(--sidebar-primary);
  --color-sidebar-foreground: var(--sidebar-foreground);
  --color-sidebar: var(--sidebar);
  --color-chart-5: var(--chart-5);
  --color-chart-4: var(--chart-4);
  --color-chart-3: var(--chart-3);
  --color-chart-2: var(--chart-2);
  --color-chart-1: var(--chart-1);
  --color-ring: var(--ring);
  --color-input: var(--input);
  --color-border: var(--border);
  --color-destructive: var(--destructive);
  --color-accent-foreground: var(--accent-foreground);
  --color-accent: var(--accent);
  --color-muted-foreground: var(--muted-foreground);
  --color-muted: var(--muted);
  --color-secondary-foreground: var(--secondary-foreground);
  --color-secondary: var(--secondary);
  --color-primary-foreground: var(--primary-foreground);
  --color-primary: var(--primary);
  --color-popover-foreground: var(--popover-foreground);
  --color-popover: var(--popover);
  --color-card-foreground: var(--card-foreground);
  --color-card: var(--card);
  --radius-sm: calc(var(--radius) - 4px);
  --radius-md: calc(var(--radius) - 2px);
  --radius-lg: var(--radius);
  --radius-xl: calc(var(--radius) + 4px);
  --color-emerald: #10b981;
  --color-teal: #14b8a6;
  --color-amber: #f59e0b;
}

:root {
  --radius: 0.75rem;
  /* Brand CSS custom properties — applied dynamically via JS */
  --brand-primary: #10b981;
  --brand-secondary: #14b8a6;
  --brand-accent: #059669;
  --brand-font: "Inter", sans-serif;

  --background: oklch(0.99 0.002 155);
  --foreground: oklch(0.17 0.01 260);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.17 0.01 260);
  --popover: oklch(1 0 0);
  --popover-foreground: oklch(0.17 0.01 260);
  --primary: oklch(0.55 0.17 155);
  --primary-foreground: oklch(0.98 0.005 155);
  --secondary: oklch(0.96 0.01 155);
  --secondary-foreground: oklch(0.25 0.02 260);
  --muted: oklch(0.96 0.005 155);
  --muted-foreground: oklch(0.55 0.02 260);
  --accent: oklch(0.96 0.01 155);
  --accent-foreground: oklch(0.25 0.02 260);
  --destructive: oklch(0.577 0.245 27.325);
  --border: oklch(0.93 0.005 155);
  --input: oklch(0.93 0.005 155);
  --ring: oklch(0.55 0.17 155);
  --chart-1: oklch(0.55 0.17 155);
  --chart-2: oklch(0.53 0.14 175);
  --chart-3: oklch(0.72 0.19 85);
  --chart-4: oklch(0.60 0.18 50);
  --chart-5: oklch(0.65 0.22 330);
  --sidebar: oklch(0.97 0.01 155);
  --sidebar-foreground: oklch(0.17 0.01 260);
  --sidebar-primary: oklch(0.55 0.17 155);
  --sidebar-primary-foreground: oklch(0.98 0.005 155);
  --sidebar-accent: oklch(0.94 0.02 155);
  --sidebar-accent-foreground: oklch(0.25 0.02 260);
  --sidebar-border: oklch(0.93 0.005 155);
  --sidebar-ring: oklch(0.55 0.17 155);
}

.dark {
  --background: oklch(0.13 0.01 260);
  --foreground: oklch(0.98 0.005 155);
  --card: oklch(0.18 0.015 260);
  --card-foreground: oklch(0.98 0.005 155);
  --popover: oklch(0.18 0.015 260);
  --popover-foreground: oklch(0.98 0.005 155);
  --primary: oklch(0.65 0.17 155);
  --primary-foreground: oklch(0.15 0.01 260);
  --secondary: oklch(0.24 0.02 260);
  --secondary-foreground: oklch(0.98 0.005 155);
  --muted: oklch(0.24 0.02 260);
  --muted-foreground: oklch(0.65 0.02 260);
  --accent: oklch(0.24 0.02 260);
  --accent-foreground: oklch(0.98 0.005 155);
  --destructive: oklch(0.704 0.191 22.216);
  --border: oklch(1 0 0 / 10%);
  --input: oklch(1 0 0 / 15%);
  --ring: oklch(0.65 0.17 155);
  --chart-1: oklch(0.65 0.17 155);
  --chart-2: oklch(0.63 0.14 175);
  --chart-3: oklch(0.77 0.19 85);
  --chart-4: oklch(0.72 0.22 50);
  --chart-5: oklch(0.70 0.22 330);
  --sidebar: oklch(0.18 0.015 260);
  --sidebar-foreground: oklch(0.98 0.005 155);
  --sidebar-primary: oklch(0.65 0.17 155);
  --sidebar-primary-foreground: oklch(0.15 0.01 260);
  --sidebar-accent: oklch(0.24 0.02 260);
  --sidebar-accent-foreground: oklch(0.98 0.005 155);
  --sidebar-border: oklch(1 0 0 / 10%);
  --sidebar-ring: oklch(0.65 0.17 155);
}

@layer base {
  * {
    @apply border-border outline-ring/50;
  }
  body {
    @apply bg-background text-foreground;
  }
}

/* Custom scrollbar styling */
@layer utilities {
  .scrollbar-education::-webkit-scrollbar {
    width: 6px;
  }
  .scrollbar-education::-webkit-scrollbar-track {
    background: transparent;
  }
  .scrollbar-education::-webkit-scrollbar-thumb {
    background: oklch(0.80 0.02 155);
    border-radius: 3px;
  }
  .scrollbar-education::-webkit-scrollbar-thumb:hover {
    background: oklch(0.65 0.17 155);
  }
  .dark .scrollbar-education::-webkit-scrollbar-thumb {
    background: oklch(0.35 0.02 260);
  }
  .dark .scrollbar-education::-webkit-scrollbar-thumb:hover {
    background: oklch(0.65 0.17 155);
  }

  /* Global scrollbar override */
  *::-webkit-scrollbar {
    width: 8px;
    height: 8px;
  }
  *::-webkit-scrollbar-track {
    background: transparent;
  }
  *::-webkit-scrollbar-thumb {
    background: oklch(0.85 0.01 155);
    border-radius: 4px;
    border: 2px solid transparent;
    background-clip: padding-box;
  }
  *::-webkit-scrollbar-thumb:hover {
    background: oklch(0.65 0.17 155);
    border: 2px solid transparent;
    background-clip: padding-box;
  }
  .dark *::-webkit-scrollbar-thumb {
    background: oklch(0.30 0.015 260);
    border: 2px solid transparent;
    background-clip: padding-box;
  }
  .dark *::-webkit-scrollbar-thumb:hover {
    background: oklch(0.50 0.10 155);
    border: 2px solid transparent;
    background-clip: padding-box;
  }

  /* Dot grid background pattern */
  .bg-dots {
    background-image: radial-gradient(circle, oklch(0.80 0.02 155) 1px, transparent 1px);
    background-size: 24px 24px;
  }
  .dark .bg-dots {
    background-image: radial-gradient(circle, oklch(0.25 0.015 260) 1px, transparent 1px);
    background-size: 24px 24px;
  }

  /* Announcement banner styling */
  .announcement-banner {
    transition: all 0.3s ease;
  }
  .announcement-banner:hover {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  }

  /* Homework card styling */
  .homework-card {
    transition: all 0.2s ease;
  }
  .homework-card:hover {
    transform: translateY(-1px);
  }

  /* Priority color classes */
  .priority-urgent {
    border-color: oklch(0.577 0.245 27.325);
    background-color: oklch(0.95 0.05 27);
  }
  .priority-high {
    border-color: oklch(0.72 0.19 85);
    background-color: oklch(0.95 0.05 85);
  }
  .priority-normal {
    border-color: oklch(0.55 0.17 155);
    background-color: oklch(0.95 0.05 155);
  }
  .priority-low {
    border-color: oklch(0.53 0.14 175);
    background-color: oklch(0.95 0.05 175);
  }
  .dark .priority-urgent {
    border-color: oklch(0.577 0.245 27.325);
    background-color: oklch(0.18 0.05 27);
  }
  .dark .priority-high {
    border-color: oklch(0.72 0.19 85);
    background-color: oklch(0.18 0.05 85);
  }
  .dark .priority-normal {
    border-color: oklch(0.55 0.17 155);
    background-color: oklch(0.18 0.05 155);
  }
  .dark .priority-low {
    border-color: oklch(0.53 0.14 175);
    background-color: oklch(0.18 0.05 175);
  }

  /* Due date color classes */
  .due-overdue {
    border-color: oklch(0.577 0.245 27.325);
  }
  .due-today {
    border-color: oklch(0.72 0.19 85);
  }
  .due-upcoming {
    border-color: oklch(0.55 0.17 155);
  }
  .dark .due-overdue {
    border-color: oklch(0.577 0.245 27.325);
  }
  .dark .due-today {
    border-color: oklch(0.72 0.19 85);
  }
  .dark .due-upcoming {
    border-color: oklch(0.55 0.17 155);
  }

  /* Smooth transitions for all interactive elements */
  .interactive-transition {
    transition: all 0.2s ease-out;
  }

  /* Animated gradient background */
  .animated-gradient-bg {
    background: linear-gradient(135deg, oklch(0.97 0.01 155) 0%, oklch(0.99 0.002 155) 50%, oklch(0.97 0.01 175) 100%);
    background-size: 200% 200%;
    animation: gradient-shift 8s ease infinite;
  }
  .dark .animated-gradient-bg {
    background: linear-gradient(135deg, oklch(0.15 0.01 260) 0%, oklch(0.13 0.01 260) 50%, oklch(0.15 0.01 155) 100%);
    background-size: 200% 200%;
    animation: gradient-shift 8s ease infinite;
  }
  @keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
  }

  /* Pulse animation */
  @keyframes pulse-soft {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.85; }
  }
  .animate-pulse-soft {
    animation: pulse-soft 2s ease-in-out infinite;
  }

  /* Shimmer animation for progress bars */
  @keyframes shimmer-bar {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(200%); }
  }
  .animate-shimmer {
    animation: shimmer-bar 2.5s ease-in-out infinite;
  }

  /* Float animation for geometric shapes */
  @keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    33% { transform: translateY(-15px) rotate(5deg); }
    66% { transform: translateY(10px) rotate(-3deg); }
  }
  @keyframes float-reverse {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    33% { transform: translateY(12px) rotate(-4deg); }
    66% { transform: translateY(-10px) rotate(6deg); }
  }
  @keyframes float-slow {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(8deg); }
  }
  .animate-float {
    animation: float 6s ease-in-out infinite;
  }
  .animate-float-reverse {
    animation: float-reverse 7s ease-in-out infinite;
  }
  .animate-float-slow {
    animation: float-slow 10s ease-in-out infinite;
  }

  /* Progress bar animation */
  @keyframes progress-fill {
    from { width: 0; }
  }
  .animate-progress-fill {
    animation: progress-fill 1s ease-out;
  }

  /* Print styles — full print stylesheet lives at end of file */

  /* ─── Slide animations ──────────────────────────────────────────── */
  @keyframes slide-in {
    from { transform: translateX(30px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
  }
  .animate-slide-in {
    animation: slide-in 0.3s ease-out;
  }

  @keyframes slide-out {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(-30px); opacity: 0; }
  }
  .animate-slide-out {
    animation: slide-out 0.3s ease-in;
  }

  /* ─── Pulse dot for version timeline ────────────────────────────── */
  @keyframes pulse-dot {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.7; }
  }
  .animate-pulse-dot {
    animation: pulse-dot 2s ease-in-out infinite;
  }

  /* ─── Canvas toolbar ────────────────────────────────────────────── */
  .canvas-toolbar {
    transition: transform 0.2s ease-out, width 0.2s ease-out, height 0.2s ease-out;
  }

  /* ─── Version timeline ──────────────────────────────────────────── */
  .version-timeline {
    position: relative;
  }
  .version-timeline > div {
    padding-bottom: 0.5rem;
  }
}

/* Focus ring for accessibility */
@layer base {
  *:focus-visible {
    outline: 2px solid oklch(0.55 0.17 155);
    outline-offset: 2px;
    border-radius: 4px;
  }
  *:focus:not(:focus-visible) {
    outline: none;
  }
  /* Make keyboard focus more visible on interactive controls */
  button:focus-visible,
  a:focus-visible,
  [role="button"]:focus-visible,
  input:focus-visible,
  select:focus-visible,
  textarea:focus-visible,
  [tabindex]:focus-visible {
    outline: 2px solid oklch(0.55 0.17 155);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px oklch(0.55 0.17 155 / 0.18);
    transition: box-shadow 0.15s ease-out;
  }
  .dark button:focus-visible,
  .dark a:focus-visible,
  .dark [role="button"]:focus-visible,
  .dark input:focus-visible,
  .dark select:focus-visible,
  .dark textarea:focus-visible,
  .dark [tabindex]:focus-visible {
    outline: 2px solid oklch(0.65 0.17 155);
    box-shadow: 0 0 0 4px oklch(0.65 0.17 155 / 0.25);
  }
  html {
    scroll-behavior: smooth;
  }
}

/* ─── Styling polish utilities ─────────────────────────────────────────── */

@layer utilities {
  /* Subtle paper texture for main backgrounds */
  .bg-paper {
    background-color: oklch(0.99 0.002 155);
    background-image:
      radial-gradient(circle at 20% 10%, oklch(0.96 0.015 155 / 0.6) 0%, transparent 40%),
      radial-gradient(circle at 80% 80%, oklch(0.96 0.012 175 / 0.5) 0%, transparent 45%),
      url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.1 0 0 0 0 0.45 0 0 0 0 0.3 0 0 0 0.025 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  }
  .dark .bg-paper {
    background-color: oklch(0.13 0.01 260);
    background-image:
      radial-gradient(circle at 20% 10%, oklch(0.18 0.02 155 / 0.35) 0%, transparent 40%),
      radial-gradient(circle at 80% 80%, oklch(0.18 0.02 175 / 0.3) 0%, transparent 45%),
      url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.55 0 0 0 0 0.85 0 0 0 0 0.7 0 0 0 0.04 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  }

  /* Mesh gradient for hero / stats areas */
  .bg-mesh {
    background-color: oklch(0.99 0.002 155);
    background-image:
      radial-gradient(at 12% 18%, oklch(0.94 0.04 155 / 0.55) 0px, transparent 50%),
      radial-gradient(at 88% 22%, oklch(0.94 0.05 175 / 0.45) 0px, transparent 50%),
      radial-gradient(at 22% 88%, oklch(0.95 0.05 85 / 0.4) 0px, transparent 50%),
      radial-gradient(at 78% 78%, oklch(0.95 0.05 330 / 0.3) 0px, transparent 50%);
  }
  .dark .bg-mesh {
    background-color: oklch(0.13 0.01 260);
    background-image:
      radial-gradient(at 12% 18%, oklch(0.20 0.06 155 / 0.35) 0px, transparent 50%),
      radial-gradient(at 88% 22%, oklch(0.20 0.06 175 / 0.3) 0px, transparent 50%),
      radial-gradient(at 22% 88%, oklch(0.20 0.07 85 / 0.25) 0px, transparent 50%),
      radial-gradient(at 78% 78%, oklch(0.20 0.08 330 / 0.2) 0px, transparent 50%);
  }

  /* Shimmer skeleton loader */
  @keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
  }
  .shimmer {
    background: linear-gradient(
      90deg,
      oklch(0.92 0.005 155 / 0.4) 0%,
      oklch(0.88 0.01 155 / 0.7) 50%,
      oklch(0.92 0.005 155 / 0.4) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.6s linear infinite;
  }
  .dark .shimmer {
    background: linear-gradient(
      90deg,
      oklch(0.22 0.015 260 / 0.5) 0%,
      oklch(0.28 0.02 260 / 0.8) 50%,
      oklch(0.22 0.015 260 / 0.5) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.6s linear infinite;
  }

  /* Subtle inner ring for premium cards */
  .ring-inset-soft {
    box-shadow: inset 0 0 0 1px oklch(1 0 0 / 0.05), 0 1px 2px oklch(0 0 0 / 0.04);
  }
  .dark .ring-inset-soft {
    box-shadow: inset 0 0 0 1px oklch(1 0 0 / 0.04), 0 1px 2px oklch(0 0 0 / 0.2);
  }

  /* Document / paper preview look for reports */
  .paper-preview {
    background: white;
    background-image:
      linear-gradient(oklch(0.96 0.005 155 / 0.6) 1px, transparent 1px);
    background-size: 100% 28px;
    box-shadow:
      0 1px 0 oklch(0.85 0.005 155),
      0 4px 12px oklch(0 0 0 / 0.08),
      0 24px 60px oklch(0 0 0 / 0.06);
  }
  .dark .paper-preview {
    background: oklch(0.18 0.015 260);
    background-image:
      linear-gradient(oklch(0.22 0.015 260 / 0.6) 1px, transparent 1px);
    background-size: 100% 28px;
    box-shadow:
      0 1px 0 oklch(0 0 0 / 0.4),
      0 4px 12px oklch(0 0 0 / 0.4),
      0 24px 60px oklch(0 0 0 / 0.3);
  }

  /* Sticky header helper for tables */
  .sticky-header th {
    position: sticky;
    top: 0;
    z-index: 5;
    background: oklch(0.96 0.005 155);
  }
  .dark .sticky-header th {
    background: oklch(0.20 0.015 260);
  }

  /* Sparkline path */
  .sparkline-path {
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
  }

  /* Lift on hover for cards */
  .lift-on-hover {
    transition: transform 0.18s ease, box-shadow 0.18s ease;
  }
  .lift-on-hover:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px -10px oklch(0.55 0.17 155 / 0.18);
  }

  /* Gradient text for highlights */
  .text-gradient-emerald {
    background: linear-gradient(90deg, oklch(0.55 0.17 155), oklch(0.55 0.14 175));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
  .text-gradient-amber {
    background: linear-gradient(90deg, oklch(0.72 0.19 85), oklch(0.60 0.18 50));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
  .text-gradient-violet {
    background: linear-gradient(90deg, oklch(0.60 0.20 320), oklch(0.65 0.22 280));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
  .text-gradient-rose {
    background: linear-gradient(90deg, oklch(0.65 0.22 15), oklch(0.62 0.20 350));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
  .text-gradient-teal {
    background: linear-gradient(90deg, oklch(0.55 0.14 175), oklch(0.60 0.16 195));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
  /* Generic gradient text — direction aware */
  .gradient-text {
    background: linear-gradient(135deg, oklch(0.55 0.17 155) 0%, oklch(0.55 0.14 175) 50%, oklch(0.65 0.22 330) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
  .dark .gradient-text {
    background: linear-gradient(135deg, oklch(0.70 0.17 155) 0%, oklch(0.70 0.14 175) 50%, oklch(0.78 0.22 330) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  /* Frosted glass card — backdrop blur + translucent surface */
  .glass-card {
    background: oklch(1 0 0 / 0.7);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border: 1px solid oklch(1 0 0 / 0.4);
    box-shadow:
      0 4px 16px -4px oklch(0 0 0 / 0.08),
      inset 0 0 0 1px oklch(1 0 0 / 0.3);
  }
  .dark .glass-card {
    background: oklch(0.18 0.015 260 / 0.65);
    backdrop-filter: blur(12px) saturate(140%);
    -webkit-backdrop-filter: blur(12px) saturate(140%);
    border: 1px solid oklch(1 0 0 / 0.08);
    box-shadow:
      0 4px 16px -4px oklch(0 0 0 / 0.4),
      inset 0 0 0 1px oklch(1 0 0 / 0.05);
  }
  .glass-card-strong {
    background: oklch(1 0 0 / 0.85);
    backdrop-filter: blur(20px) saturate(200%);
    -webkit-backdrop-filter: blur(20px) saturate(200%);
    border: 1px solid oklch(1 0 0 / 0.5);
  }
  .dark .glass-card-strong {
    background: oklch(0.18 0.015 260 / 0.8);
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    border: 1px solid oklch(1 0 0 / 0.1);
  }

  /* Animated count-up number */
  @keyframes count-up {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .animate-count-up {
    animation: count-up 0.5s ease-out;
  }

  /* Decorative dotted/grid background pattern for headers */
  .bg-pattern-dots {
    background-image: radial-gradient(circle, oklch(0.55 0.17 155 / 0.18) 1px, transparent 1px);
    background-size: 16px 16px;
  }
  .dark .bg-pattern-dots {
    background-image: radial-gradient(circle, oklch(0.65 0.17 155 / 0.18) 1px, transparent 1px);
    background-size: 16px 16px;
  }
  .bg-pattern-grid {
    background-image:
      linear-gradient(oklch(0.55 0.17 155 / 0.06) 1px, transparent 1px),
      linear-gradient(90deg, oklch(0.55 0.17 155 / 0.06) 1px, transparent 1px);
    background-size: 24px 24px;
  }
  .dark .bg-pattern-grid {
    background-image:
      linear-gradient(oklch(0.65 0.17 155 / 0.08) 1px, transparent 1px),
      linear-gradient(90deg, oklch(0.65 0.17 155 / 0.08) 1px, transparent 1px);
    background-size: 24px 24px;
  }

  /* Soft glow utility for highlighted elements */
  .glow-emerald {
    box-shadow: 0 0 0 1px oklch(0.55 0.17 155 / 0.15), 0 8px 24px -6px oklch(0.55 0.17 155 / 0.35);
  }
  .dark .glow-emerald {
    box-shadow: 0 0 0 1px oklch(0.65 0.17 155 / 0.25), 0 8px 24px -6px oklch(0.65 0.17 155 / 0.45);
  }

  /* Subtle top-border accent for chart cards */
  .accent-top-emerald { border-top: 3px solid oklch(0.55 0.17 155); }
  .accent-top-teal { border-top: 3px solid oklch(0.55 0.14 175); }
  .accent-top-amber { border-top: 3px solid oklch(0.72 0.19 85); }
  .accent-top-violet { border-top: 3px solid oklch(0.60 0.20 320); }
  .accent-top-rose { border-top: 3px solid oklch(0.65 0.22 15); }

  /* Subtle entrance animation for staggered items */
  @keyframes enter-fade {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .animate-enter-fade {
    animation: enter-fade 0.35s ease-out backwards;
  }

  /* ─── Styling polish additions ──────────────────────────────────── */

  /* Smooth page transition animation (fadeIn for view changes) */
  @keyframes view-fade-in {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .animate-view-fade-in {
    animation: view-fade-in 0.3s ease-out;
  }

  /* Hover lift effect for cards */
  .card-hover-lift {
    transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
  }
  .card-hover-lift:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px -6px oklch(0.55 0.17 155 / 0.15);
  }
  .dark .card-hover-lift:hover {
    box-shadow: 0 8px 24px -6px oklch(0.65 0.17 155 / 0.25);
  }

  /* Focus-within ring animation for inputs */
  .input-focus-ring {
    transition: box-shadow 0.2s ease-out;
  }
  .input-focus-ring:focus-within {
    box-shadow: 0 0 0 3px oklch(0.55 0.17 155 / 0.2);
  }
  .dark .input-focus-ring:focus-within {
    box-shadow: 0 0 0 3px oklch(0.65 0.17 155 / 0.3);
  }

  /* Tooltip animation (scale from 0.95 to 1) */
  @keyframes tooltip-enter {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
  }
  .animate-tooltip-enter {
    animation: tooltip-enter 0.15s ease-out;
  }

  /* ─── Smooth Dark Mode Scrollbar ───────────────────────────────────── */
  .dark ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
  }
  .dark ::-webkit-scrollbar-track {
    background: oklch(0.15 0.01 260);
  }
  .dark ::-webkit-scrollbar-thumb {
    background: oklch(0.35 0.015 260 / 0.6);
    border-radius: 4px;
    border: 2px solid transparent;
    background-clip: padding-box;
  }
  .dark ::-webkit-scrollbar-thumb:hover {
    background: oklch(0.50 0.10 155 / 0.7);
    border: 2px solid transparent;
    background-clip: padding-box;
  }
  /* Firefox scrollbar for dark mode */
  .dark * {
    scrollbar-width: thin;
    scrollbar-color: oklch(0.35 0.015 260 / 0.6) oklch(0.15 0.01 260);
  }

  /* ─── Better Focus-Visible Styles ──────────────────────────────────── */
  @media (prefers-reduced-motion: reduce) {
    *:focus-visible {
      transition: none;
    }
  }
  /* Enhanced focus ring for card-based interactive elements */
  [role="button"]:focus-visible,
  button:focus-visible {
    outline: 2px solid oklch(0.55 0.17 155);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px oklch(0.55 0.17 155 / 0.15);
    border-radius: 8px;
    transition: box-shadow 0.15s ease-out;
  }
  .dark [role="button"]:focus-visible,
  .dark button:focus-visible {
    outline: 2px solid oklch(0.65 0.17 155);
    box-shadow: 0 0 0 4px oklch(0.65 0.17 155 / 0.2);
  }

  /* ─── Subtle Card Hover Effects ────────────────────────────────────── */
  .card-hover-glow {
    transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
  }
  .card-hover-glow:hover {
    transform: translateY(-2px);
    box-shadow:
      0 8px 24px -6px oklch(0.55 0.17 155 / 0.12),
      0 0 0 1px oklch(0.55 0.17 155 / 0.08);
  }
  .dark .card-hover-glow:hover {
    box-shadow:
      0 8px 24px -6px oklch(0.65 0.17 155 / 0.2),
      0 0 0 1px oklch(0.65 0.17 155 / 0.12);
  }

  /* ─── Staggered Entry Animation ────────────────────────────────────── */
  @keyframes stagger-fade-in {
    from { opacity: 0; transform: translateY(8px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
  }
  .animate-stagger-in {
    animation: stagger-fade-in 0.35s ease-out backwards;
  }

  /* ─── Chart Shimmer on Load ────────────────────────────────────────── */
  @keyframes chart-shimmer {
    0% { opacity: 0.5; transform: translateX(-100%); }
    50% { opacity: 0.3; }
    100% { opacity: 0; transform: translateX(100%); }
  }
  .animate-chart-shimmer {
    animation: chart-shimmer 1.5s ease-out forwards;
  }

  /* ─── Button Press Effect ────────────────────────────────────────── */
  .btn-press {
    transition: transform 0.1s ease-out, box-shadow 0.1s ease-out;
  }
  .btn-press:active {
    transform: scale(0.97);
  }
  .btn-press:focus-visible {
    outline: 2px solid oklch(0.55 0.17 155);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px oklch(0.55 0.17 155 / 0.15);
  }
  .dark .btn-press:focus-visible {
    outline: 2px solid oklch(0.65 0.17 155);
    box-shadow: 0 0 0 4px oklch(0.65 0.17 155 / 0.2);
  }

  /* ─── Smooth Theme Switching ─────────────────────────────────────── */
  html {
    transition: background-color 0.3s ease, color 0.3s ease;
  }
  html *,
  html *::before,
  html *::after {
    transition-property: background-color, border-color, color, fill, stroke, box-shadow;
    transition-duration: 0.2s;
    transition-timing-function: ease-out;
  }
  @media (prefers-reduced-motion: reduce) {
    html *,
    html *::before,
    html *::after {
      transition-duration: 0ms !important;
    }
  }

  /* ─── Skeleton Loading Shimmer ───────────────────────────────────── */
  .skeleton-shimmer {
    position: relative;
    overflow: hidden;
    background: oklch(0.92 0.01 155 / 0.5);
  }
  .dark .skeleton-shimmer {
    background: oklch(0.25 0.01 260 / 0.5);
  }
  .skeleton-shimmer::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
      90deg,
      transparent 0%,
      oklch(0.97 0.01 155 / 0.4) 50%,
      transparent 100%
    );
    animation: skeleton-slide 1.5s ease-in-out infinite;
  }
  .dark .skeleton-shimmer::after {
    background: linear-gradient(
      90deg,
      transparent 0%,
      oklch(0.35 0.01 260 / 0.3) 50%,
      transparent 100%
    );
  }
  @keyframes skeleton-slide {
    from { transform: translateX(-100%); }
    to { transform: translateX(100%); }
  }

  /* ─── Interactive Card Hover Micro-Effect ─────────────────────────── */
  .card-interactive {
    transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
  }
  .card-interactive:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px -6px oklch(0.55 0.17 155 / 0.12);
  }
  .dark .card-interactive:hover {
    box-shadow: 0 8px 24px -6px oklch(0.35 0.17 155 / 0.2);
  }
  .card-interactive:active {
    transform: translateY(0px) scale(0.99);
  }

  /* ─── New Utility Classes (Round 24) ──────────────────────────────── */

  /* .animate-pulse-slow — Slower pulse animation */
  @keyframes pulse-slow {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.05); }
  }
  .animate-pulse-slow {
    animation: pulse-slow 3s ease-in-out infinite;
  }

  /* .hover-lift — Hover lift effect */
  .hover-lift {
    transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
  }
  .hover-lift:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px -8px oklch(0.55 0.17 155 / 0.2);
  }
  .dark .hover-lift:hover {
    box-shadow: 0 12px 28px -8px oklch(0.65 0.17 155 / 0.3);
  }

  /* .gradient-border — Border with gradient */
  .gradient-border {
    position: relative;
    border: none;
    background-clip: padding-box;
  }
  .gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    margin: -1.5px;
    border-radius: inherit;
    background: linear-gradient(135deg, oklch(0.55 0.17 155), oklch(0.55 0.14 175), oklch(0.65 0.22 330));
  }
  .dark .gradient-border::before {
    background: linear-gradient(135deg, oklch(0.65 0.17 155), oklch(0.65 0.14 175), oklch(0.75 0.22 330));
  }

  /* .pattern-dots — Dot pattern background */
  .pattern-dots {
    background-image: radial-gradient(circle, oklch(0.55 0.17 155 / 0.12) 1px, transparent 1px);
    background-size: 20px 20px;
  }
  .dark .pattern-dots {
    background-image: radial-gradient(circle, oklch(0.65 0.17 155 / 0.15) 1px, transparent 1px);
    background-size: 20px 20px;
  }

  /* .pattern-grid — Grid pattern background */
  .pattern-grid {
    background-image:
      linear-gradient(oklch(0.55 0.17 155 / 0.05) 1px, transparent 1px),
      linear-gradient(90deg, oklch(0.55 0.17 155 / 0.05) 1px, transparent 1px);
    background-size: 32px 32px;
  }
  .dark .pattern-grid {
    background-image:
      linear-gradient(oklch(0.65 0.17 155 / 0.06) 1px, transparent 1px),
      linear-gradient(90deg, oklch(0.65 0.17 155 / 0.06) 1px, transparent 1px);
    background-size: 32px 32px;
  }

  /* @keyframes slideInUp — Slide in from bottom */
  @keyframes slideInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .animate-slide-in-up {
    animation: slideInUp 0.4s ease-out;
  }

  /* @keyframes scaleIn — Scale in from center */
  @keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
  }
  .animate-scale-in {
    animation: scaleIn 0.3s ease-out;
  }

  /* @keyframes fadeInScale — Fade + scale combined */
  @keyframes fadeInScale {
    from { opacity: 0; transform: scale(0.95) translateY(8px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
  }
  .animate-fade-in-scale {
    animation: fadeInScale 0.4s ease-out;
  }

  /* Notification badge pulse */
  @keyframes badge-pulse {
    0%, 100% { box-shadow: 0 0 0 0 oklch(0.55 0.17 155 / 0.4); }
    50% { box-shadow: 0 0 0 6px oklch(0.55 0.17 155 / 0); }
  }
  .animate-badge-pulse {
    animation: badge-pulse 2s ease-in-out infinite;
  }
  .dark .animate-badge-pulse {
    animation-name: badge-pulse-dark;
  }
  @keyframes badge-pulse-dark {
    0%, 100% { box-shadow: 0 0 0 0 oklch(0.65 0.17 155 / 0.5); }
    50% { box-shadow: 0 0 0 6px oklch(0.65 0.17 155 / 0); }
  }

  /* Animated gradient header banner */
  @keyframes header-gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
  }
  .animate-header-gradient {
    background-size: 200% 200%;
    animation: header-gradient-shift 6s ease infinite;
  }

  /* Timeline connector line for activity entries */
  .timeline-connector {
    position: relative;
  }
  .timeline-connector::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 36px;
    bottom: -8px;
    width: 2px;
    background: oklch(0.90 0.01 155);
  }
  .dark .timeline-connector::before {
    background: oklch(0.25 0.015 260);
  }
  .timeline-connector:last-child::before {
    display: none;
  }

  /* Input validation states */
  .input-valid {
    border-color: oklch(0.55 0.17 155) !important;
    box-shadow: 0 0 0 3px oklch(0.55 0.17 155 / 0.12);
  }
  .input-invalid {
    border-color: oklch(0.577 0.245 27.325) !important;
    box-shadow: 0 0 0 3px oklch(0.577 0.245 27.325 / 0.12);
  }

  /* Social login button hover */
  .social-btn {
    transition: all 0.2s ease-out;
  }
  .social-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px oklch(0 0 0 / 0.1);
  }
  .social-btn:active {
    transform: translateY(0) scale(0.98);
  }

  /* ─── Danger Zone Styling ────────────────────────────────────────── */
  .danger-zone {
    border: 2px dashed oklch(0.55 0.22 25 / 0.4);
    border-radius: 12px;
    padding: 1.5rem;
    background: oklch(0.55 0.22 25 / 0.03);
  }
  .dark .danger-zone {
    border-color: oklch(0.55 0.22 25 / 0.3);
    background: oklch(0.55 0.22 25 / 0.05);
  }
  .danger-zone:hover {
    border-color: oklch(0.55 0.22 25 / 0.6);
    background: oklch(0.55 0.22 25 / 0.06);
  }

  /* ─── File Drop Zone ─────────────────────────────────────────────── */
  .file-drop-zone {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 120px;
    padding: 24px;
    border: 2px dashed oklch(0.75 0.05 155);
    border-radius: 12px;
    background: oklch(0.97 0.01 155 / 0.3);
    cursor: pointer;
    transition: all 0.2s ease;
  }
  .dark .file-drop-zone {
    border-color: oklch(0.4 0.05 155);
    background: oklch(0.2 0.02 155 / 0.3);
  }
  .file-drop-zone.drag-over {
    border-color: oklch(0.55 0.17 155);
    background: oklch(0.55 0.17 155 / 0.1);
    transform: scale(1.01);
  }
  .dark .file-drop-zone.drag-over {
    border-color: oklch(0.65 0.17 155);
    background: oklch(0.65 0.17 155 / 0.1);
  }
  .file-drop-zone:hover {
    border-color: oklch(0.55 0.17 155);
    background: oklch(0.55 0.17 155 / 0.05);
  }

  /* ─── Import Progress Bar ────────────────────────────────────────── */
  .import-progress {
    animation: import-fade-in 0.3s ease-out;
  }
  @keyframes import-fade-in {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
  }

  /* ─── Report Preview Page ────────────────────────────────────────── */
  .report-preview {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 32px;
    background: white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border-radius: 8px;
  }
  .dark .report-preview {
    background: oklch(0.15 0.01 260);
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
  }

  /* ─── Environmental Watermark ────────────────────────────────────── */
  .watermark-eco {
    position: fixed;
    bottom: 50%;
    right: -60px;
    transform: rotate(-45deg);
    font-size: 72px;
    font-weight: 900;
    color: oklch(0.55 0.17 155 / 0.04);
    pointer-events: none;
    z-index: -1;
    user-select: none;
  }

  /* ─── Badge Type ─────────────────────────────────────────────────── */
  .badge-type {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }

  /* ─── Status Indicator Dot Pulse ─────────────────────────────────── */
  @keyframes status-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
  }
  .status-dot-pulse {
    animation: status-pulse 2s ease-in-out infinite;
  }

  /* ─── Count-Up Animation for Numbers ─────────────────────────────── */
  .animate-count-up {
    animation: count-up 0.8s ease-out;
  }
  @keyframes count-up {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
  }

  /* ─── Round 25 Utility Classes ──────────────────────────────────── */

  /* .gradient-border-left — Left border with gradient accent */
  .gradient-border-left {
    position: relative;
    border-left: none;
  }
  .gradient-border-left::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    border-radius: 0 3px 3px 0;
    background: linear-gradient(180deg, oklch(0.55 0.17 155), oklch(0.55 0.14 175), oklch(0.72 0.19 85));
  }
  .dark .gradient-border-left::before {
    background: linear-gradient(180deg, oklch(0.65 0.17 155), oklch(0.65 0.14 175), oklch(0.77 0.19 85));
  }

  /* @keyframes slideInLeft — Slide in from left */
  @keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-24px); }
    to { opacity: 1; transform: translateX(0); }
  }
  .animate-slide-in-left {
    animation: slideInLeft 0.4s ease-out;
  }

  /* @keyframes fadeUp — Fade and move up */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .animate-fade-up {
    animation: fadeUp 0.45s ease-out;
  }

  /* .status-dot — Small status indicator dot */
  .status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: oklch(0.55 0.17 155);
    box-shadow: 0 0 0 2px oklch(0.55 0.17 155 / 0.2);
  }
  .dark .status-dot {
    background: oklch(0.65 0.17 155);
    box-shadow: 0 0 0 2px oklch(0.65 0.17 155 / 0.3);
  }
  .status-dot-amber {
    background: oklch(0.72 0.19 85);
    box-shadow: 0 0 0 2px oklch(0.72 0.19 85 / 0.2);
  }
  .status-dot-rose {
    background: oklch(0.65 0.22 15);
    box-shadow: 0 0 0 2px oklch(0.65 0.22 15 / 0.2);
  }
  .status-dot-violet {
    background: oklch(0.60 0.20 320);
    box-shadow: 0 0 0 2px oklch(0.60 0.20 320 / 0.2);
  }

  /* .progress-animated — Progress bar with fill animation */
  @keyframes progressFill {
    from { width: 0%; }
  }
  .progress-animated {
    animation: progressFill 1s ease-out;
    transition: width 0.6s ease-out;
  }

  /* @keyframes pulseGlow — Pulsing glow effect */
  @keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 0 0 oklch(0.55 0.17 155 / 0.4); }
    50% { box-shadow: 0 0 12px 4px oklch(0.55 0.17 155 / 0.15); }
  }
  .animate-pulse-glow {
    animation: pulseGlow 2.5s ease-in-out infinite;
  }
  .dark .animate-pulse-glow {
    animation-name: pulseGlowDark;
  }
  @keyframes pulseGlowDark {
    0%, 100% { box-shadow: 0 0 0 0 oklch(0.65 0.17 155 / 0.5); }
    50% { box-shadow: 0 0 12px 4px oklch(0.65 0.17 155 / 0.2); }
  }

  /* .glassmorphism-card — Frosted glass card with blur */
  .glassmorphism-card {
    background: oklch(1 0 0 / 0.6);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid oklch(1 0 0 / 0.35);
    box-shadow: 0 8px 32px -8px oklch(0 0 0 / 0.08), inset 0 0 0 1px oklch(1 0 0 / 0.2);
  }
  .dark .glassmorphism-card {
    background: oklch(0.18 0.015 260 / 0.55);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    border: 1px solid oklch(1 0 0 / 0.08);
    box-shadow: 0 8px 32px -8px oklch(0 0 0 / 0.4), inset 0 0 0 1px oklch(1 0 0 / 0.04);
  }

  /* .gradient-border-card — Card with gradient border on all sides */
  .gradient-border-card {
    position: relative;
    border: none;
    background-clip: padding-box;
    border-radius: 12px;
  }
  .gradient-border-card::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    margin: -1.5px;
    border-radius: inherit;
    background: linear-gradient(135deg, oklch(0.55 0.17 155), oklch(0.55 0.14 175), oklch(0.72 0.19 85));
  }
  .dark .gradient-border-card::before {
    background: linear-gradient(135deg, oklch(0.65 0.17 155), oklch(0.65 0.14 175), oklch(0.77 0.19 85));
  }
}

/* Print-specific styling — expands to all reports when printing */
@media print {
  .no-print { display: none !important; }
  .print-only { display: block !important; }
  body { background: white !important; color: black !important; }

  /* Hide sidebar, header, navigation */
  [data-sidebar], header, nav, .no-print { display: none !important; }

  /* Make main content full width */
  main, .print-area { width: 100% !important; margin: 0 !important; padding: 1rem !important; }

  /* Ensure cards have borders for print */
  .card, [class*="Card"] { border: 1px solid #e5e7eb !important; break-inside: avoid; }

  /* Ensure text is readable */
  body { color: #000 !important; background: #fff !important; }

  /* Page breaks */
  .page-break { page-break-before: always; }
  .print-break-before { page-break-before: always; }
  .print-avoid-break { page-break-inside: avoid; }

  .shadow-sm, .shadow-md, .shadow-lg, .shadow-xl { box-shadow: none !important; }
  .paper-preview { box-shadow: none !important; }
  @page { margin: 18mm 16mm; }
  /* Better margins for print */
  .card-hover-lift:hover { transform: none !important; box-shadow: none !important; }
  /* Hide interactive elements */
  button, .no-print, [role="button"], nav, aside, footer, header,
  .sidebar, .sidebar-trigger, .breadcrumb { display: none !important; }
  /* Ensure readable text */
  .dark { background: white !important; color: black !important; }
  .dark * { color: inherit !important; background: transparent !important; }
  /* Prevent overflow */
  .overflow-y-auto, .max-h-96, .max-h-80, .max-h-72 { max-height: none !important; overflow: visible !important; }
}

/* ─── Tablet & Stylus Optimization ────────────────────────────────────── */

/* Minimum touch target size (44px as per Apple HIG and WCAG guidelines) */
@layer utilities {
  .min-touch {
    min-width: 44px;
    min-height: 44px;
  }
}

/* Touch-friendly media queries for tablets (768px-1024px) */
@media (pointer: coarse) {
  /* Increase touch targets for all interactive elements */
  button,
  [role="button"],
  a,
  input[type="checkbox"],
  input[type="radio"],
  select,
  .tabs-trigger,
  [data-state] {
    min-height: 44px;
  }

  /* Stylus-friendly: larger focus rings to prevent accidental taps */
  *:focus-visible {
    outline-width: 3px;
    outline-offset: 4px;
  }

  /* More generous spacing between interactive elements */
  .sidebar-menu-item {
    margin-bottom: 2px;
  }

  /* Prevent text selection while using stylus on interactive elements */
  button, a, [role="button"] {
    -webkit-user-select: none;
    user-select: none;
  }

  /* Slightly larger fonts for touch readability */
  input, select, textarea {
    font-size: 16px; /* Prevents iOS zoom on input focus */
  }
}

/* Tablet-specific viewport styles (768px-1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
  /* Adjust grid layouts for tablet */
  .lg\:grid-cols-5 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  /* More compact spacing for tablet */
  .space-y-7 > * + * {
    margin-top: 1.25rem;
  }
  /* Ensure sidebar doesn't collapse too much */
  [data-sidebar] {
    min-width: 220px;
  }
}

/* Stylus-specific improvements */
@media (pointer: fine) and (hover: none) {
  /* Stylus devices often lack hover — replace hover effects with active */
  *:hover {
    /* Remove hover-only styles that don't make sense without hover capability */
  }
  /* Larger active/focus states for stylus precision */
  *:active {
    transform: scale(0.98);
    transition: transform 0.1s ease;
  }
}

/* ─── Smooth Scrollbar Styling (touch-friendly) ─────────────────────── */
@layer utilities {
  .scrollbar-touch::-webkit-scrollbar {
    width: 10px;
    height: 10px;
  }
  .scrollbar-touch::-webkit-scrollbar-track {
    background: transparent;
    margin: 4px;
  }
  .scrollbar-touch::-webkit-scrollbar-thumb {
    background: oklch(0.80 0.02 155 / 0.5);
    border-radius: 5px;
    border: 3px solid transparent;
    background-clip: padding-box;
  }
  .scrollbar-touch::-webkit-scrollbar-thumb:hover {
    background: oklch(0.65 0.17 155 / 0.7);
    border: 3px solid transparent;
    background-clip: padding-box;
  }
  .dark .scrollbar-touch::-webkit-scrollbar-thumb {
    background: oklch(0.35 0.015 260 / 0.5);
    border: 3px solid transparent;
    background-clip: padding-box;
  }

  /* Stylus-friendly input styles — larger focus rings for precision tapping */
  .stylus-input:focus-visible {
    outline: 3px solid oklch(0.55 0.17 155);
    outline-offset: 4px;
    box-shadow: 0 0 0 6px oklch(0.55 0.17 155 / 0.15);
    border-radius: 8px;
    transition: box-shadow 0.2s ease-out, outline-offset 0.2s ease-out;
  }
  .dark .stylus-input:focus-visible {
    outline: 3px solid oklch(0.65 0.17 155);
    box-shadow: 0 0 0 6px oklch(0.65 0.17 155 / 0.2);
  }
}

/* ─── Better Print Styles ──────────────────────────────────────────────── */
@media print {
  /* Ensure emerald accent colors print as dark gray for readability */
  .text-emerald-600, .text-emerald-700, .text-teal-600, .text-teal-700 {
    color: #333 !important;
  }
  .bg-emerald-50, .bg-emerald-100, .bg-teal-50, .bg-teal-100,
  .bg-gradient-to-r,
  [class*="from-emerald"],
  [class*="from-teal"] {
    background: #f5f5f5 !important;
  }

  /* Remove animations for print */
  .animate-float, .animate-float-reverse, .animate-float-slow,
  .animate-pulse-soft, .animate-shimmer, .animate-progress-fill,
  .animate-view-fade-in, .animate-enter-fade, .animate-count-up,
  .animate-stagger-in, .animate-chart-shimmer {
    animation: none !important;
  }

  /* Force all cards to have visible borders */
  [class*="border-0"], [class*="border-l-3"] {
    border: 1px solid #ddd !important;
  }

  /* Remove shadows */
  .shadow-sm, .shadow-md, .shadow-lg, .shadow-xl,
  [class*="shadow-"] {
    box-shadow: none !important;
  }

  /* Notebook export specific styles */
  .no-print { display: none !important; }
  .notebook-export {
    padding: 2cm;
    font-size: 12pt;
  }
  .notebook-export .page-break {
    page-break-after: always;
  }
  .notebook-export .page-content {
    min-height: 24cm;
  }
  /* Lined background for print */
  .notebook-export .page-lined {
    background-image: repeating-linear-gradient(
      transparent, transparent 31px, #e5e7eb 31px, #e5e7eb 32px
    );
  }
}

/* ─── Mobile Responsiveness Utilities ─────────────────────────────────── */
@layer utilities {
  /* Safe area insets for iOS notch/bottom bar */
  .safe-top { padding-top: env(safe-area-inset-top, 0px); }
  .safe-bottom { padding-bottom: env(safe-area-inset-bottom, 0px); }
  .safe-left { padding-left: env(safe-area-inset-left, 0px); }
  .safe-right { padding-right: env(safe-area-inset-right, 0px); }
  .safe-all {
    padding-top: env(safe-area-inset-top, 0px);
    padding-bottom: env(safe-area-inset-bottom, 0px);
    padding-left: env(safe-area-inset-left, 0px);
    padding-right: env(safe-area-inset-right, 0px);
  }

  /* Prevent pinch-zoom on canvas elements */
  .canvas-no-zoom {
    touch-action: none;
    -ms-touch-action: none;
  }

  /* Prevent text selection on drawing canvas */
  .canvas-no-select {
    -webkit-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
  }

  /* Mobile-friendly horizontal scroll container for tables */
  .mobile-scroll-x {
    -webkit-overflow-scrolling: touch;
    overflow-x: auto;
    scrollbar-width: thin;
  }

  /* Mobile stack helper */
  .mobile-stack {
    @media (max-width: 639px) {
      flex-direction: column;
      gap: 0.75rem;
    }
  }

  /* Mobile full-width inputs */
  .mobile-full-width {
    @media (max-width: 639px) {
      width: 100%;
    }
  }
}

/* Mobile-specific viewport adjustments */
@media (max-width: 639px) {
  /* Ensure dialogs don't overflow on small screens */
  [role="dialog"] {
    max-width: calc(100vw - 2rem) !important;
    max-height: calc(100vh - 2rem) !important;
    margin: 1rem auto;
  }

  /* Ensure popovers are properly sized */
  [data-radix-popper-content-wrapper] {
    max-width: calc(100vw - 2rem) !important;
  }

  /* Make card grids stack on mobile */
  .grid {
    gap: 0.75rem;
  }

  /* Fix horizontal overflow */
  body {
    overflow-x: hidden;
  }

  /* Prevent overflow in flex containers */
  .flex {
    min-width: 0;
  }

  /* Make tabs scrollable on mobile */
  [role="tablist"] {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  [role="tablist"]::-webkit-scrollbar {
    display: none;
  }

  /* Stack stat cards vertically on mobile */
  .mobile-card-stack {
    grid-template-columns: 1fr !important;
  }

  /* Notebook grid: 1 column on mobile */
  .mobile-notebook-grid {
    grid-template-columns: 1fr !important;
  }

  /* Table horizontal scroll on mobile */
  .mobile-table-scroll {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Full-width inputs on mobile */
  input, select, textarea {
    max-width: 100%;
  }
}

/* Tablet-specific adjustments (640px-768px) */
@media (min-width: 640px) and (max-width: 767px) {
  /* Notebook grid: 2 columns on tablet */
  .mobile-notebook-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  }
}

/* ─── Micro-interaction Animations ─────────────────────────────────────── */
@layer utilities {
  /* Fade in + slide up */
  @keyframes fade-in-up {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .animate-fade-in-up {
    animation: fade-in-up 0.35s ease-out;
  }

  /* Scale in from 0.95 to 1 */
  @keyframes scale-in {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
  }
  .animate-scale-in {
    animation: scale-in 0.2s ease-out;
  }

  /* Error shake animation */
  @keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
    20%, 40%, 60%, 80% { transform: translateX(4px); }
  }
  .animate-shake {
    animation: shake 0.5s ease-in-out;
  }

  /* Success checkmark animation */
  @keyframes success-check {
    0% { transform: scale(0); opacity: 0; }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); opacity: 1; }
  }
  .animate-success-check {
    animation: success-check 0.4s ease-out;
  }

  /* Subtle lift on hover (translateY -1px) */
  .hover-lift {
    transition: transform 0.15s ease-out, box-shadow 0.15s ease-out;
  }
  .hover-lift:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px -2px oklch(0 0 0 / 0.08);
  }
  .dark .hover-lift:hover {
    box-shadow: 0 4px 12px -2px oklch(0 0 0 / 0.3);
  }

  /* Animated focus ring */
  .focus-ring {
    transition: box-shadow 0.2s ease-out, outline 0.2s ease-out;
  }
  .focus-ring:focus-visible {
    outline: 2px solid oklch(0.55 0.17 155);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px oklch(0.55 0.17 155 / 0.15);
  }
  .dark .focus-ring:focus-visible {
    outline: 2px solid oklch(0.65 0.17 155);
    box-shadow: 0 0 0 4px oklch(0.65 0.17 155 / 0.2);
  }
}

/* ─── Enhanced Print Styles ────────────────────────────────────────────── */
@media print {
  /* Better print layout for reports */
  @page {
    margin: 15mm 12mm;
    size: A4;
  }

  body {
    font-size: 11pt;
    line-height: 1.4;
    color: #000 !important;
    background: #fff !important;
  }

  /* Print-specific font sizes */
  h1 { font-size: 18pt !important; }
  h2 { font-size: 14pt !important; }
  h3 { font-size: 12pt !important; }
  p, li, td, th { font-size: 10pt !important; }

  /* Hide interactive elements */
  button, nav, aside, footer, header,
  [role="button"], [role="tablist"], [role="tab"],
  .no-print, [data-sidebar], .sidebar-trigger,
  .breadcrumb, .toast-container, [data-radix-popper-content-wrapper] {
    display: none !important;
  }

  /* Ensure cards have visible borders */
  [class*="card"], [class*="Card"] {
    border: 1px solid #ddd !important;
    break-inside: avoid;
    box-shadow: none !important;
  }

  /* Page break controls */
  .page-break-before { page-break-before: always; }
  .page-break-after { page-break-after: always; }
  .page-break-avoid { page-break-inside: avoid; }

  /* Remove shadows */
  [class*="shadow"] { box-shadow: none !important; }

  /* Ensure dark mode prints as white */
  .dark { background: white !important; color: black !important; }
  .dark * { color: inherit !important; background: transparent !important; }

  /* Remove animations */
  * { animation: none !important; transition: none !important; }

  /* Ensure overflow is visible */
  .overflow-y-auto, .max-h-96, .max-h-80, .max-h-72 {
    max-height: none !important;
    overflow: visible !important;
  }

  /* Print links with URL */
  a[href]:after {
    content: " (" attr(href) ")";
    font-size: 9pt;
    color: #666;
  }
  a[href^="#"]:after { content: ""; }

  /* Table styling for print */
  table { border-collapse: collapse; }
  th, td { border: 1px solid #ccc; padding: 4px 8px; }
  th { background: #f0f0f0 !important; }
}

/* ─── Dark Mode Polish ─────────────────────────────────────────────────── */
@layer utilities {
  /* Better dark mode borders */
  .dark-border {
    border-color: oklch(1 0 0 / 8%);
  }
  .dark .dark-border {
    border-color: oklch(1 0 0 / 12%);
  }

  /* Dark mode card shadows */
  .dark-shadow {
    box-shadow: 0 1px 3px oklch(0 0 0 / 0.06);
  }
  .dark .dark-shadow {
    box-shadow: 0 1px 3px oklch(0 0 0 / 0.3), 0 0 0 1px oklch(1 0 0 / 6%);
  }

  /* Smooth transitions between light/dark */
  .theme-transition {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  }

  /* Dark mode specific borders for cards */
  .dark .card-dark-border {
    border-color: oklch(1 0 0 / 8%);
  }

  /* Dark mode specific shadows for elevated elements */
  .dark .elevated-dark {
    box-shadow: 0 4px 16px oklch(0 0 0 / 0.4), 0 0 0 1px oklch(1 0 0 / 6%);
  }

  /* Better contrast ratios for dark mode text */
  .dark .text-muted-foreground {
    color: oklch(0.70 0.02 260);
  }
}

/* ─── Accessibility Improvements ───────────────────────────────────────── */
@layer utilities {
  /* Skip to content link */
  .skip-to-content {
    position: absolute;
    top: -100%;
    left: 0;
    z-index: 9999;
    padding: 1rem 1.5rem;
    background: oklch(0.55 0.17 155);
    color: white;
    font-weight: 600;
    border-radius: 0 0 8px 0;
    transition: top 0.2s ease;
  }
  .skip-to-content:focus {
    top: 0;
  }

  /* Screen reader only utility */
  .sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    padding: inherit;
    margin: inherit;
    overflow: visible;
    clip: auto;
    white-space: inherit;
  }

  /* Focus management for modals */
  .modal-focus-wrapper {
    outline: none;
  }
  .modal-focus-wrapper:focus-visible {
    outline: 2px solid oklch(0.55 0.17 155);
    outline-offset: 2px;
  }

  /* Live region for screen reader announcements */
  .sr-live-region {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
  }

  /* High contrast mode support */
  @media (forced-colors: active) {
    .button-primary {
      border: 2px solid ButtonText;
    }
    .card-outline {
      border: 1px solid CanvasText;
    }
  }

  /* Reduced motion support */
  @media (prefers-reduced-motion: reduce) {
    .animate-fade-in-up,
    .animate-scale-in,
    .animate-shake,
    .animate-success-check,
    .animate-float,
    .animate-float-reverse,
    .animate-float-slow,
    .animate-pulse-soft,
    .animate-shimmer,
    .animate-progress-fill,
    .animate-view-fade-in,
    .animate-enter-fade,
    .animate-count-up,
    .animate-stagger-in,
    .animate-chart-shimmer,
    .animate-pulse-dot,
    .animate-slide-in,
    .animate-slide-out,
    .hover-lift:hover {
      animation: none !important;
      transition: none !important;
      transform: none !important;
    }
  }
}

/* ─── Canvas Drawing Performance ───────────────────────────────────────── */
@layer utilities {
  /* GPU-accelerated canvas rendering */
  .canvas-gpu {
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
  }

  /* Canvas layer caching */
  .canvas-layer-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
  }
  .canvas-layer-draw {
    position: absolute;
    inset: 0;
  }

  /* Performance monitor */
  .fps-counter {
    position: fixed;
    top: 4px;
    right: 4px;
    z-index: 9999;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-family: monospace;
    background: oklch(0 0 0 / 0.7);
    color: oklch(0.55 0.17 155);
    pointer-events: none;
  }
}

/* ─── Report Scheduling Styles (Task 13) ────────────────────────────────── */
@layer utilities {
  /* Schedule timeline visualization */
  .schedule-timeline {
    position: relative;
    padding-left: 1.5rem;
  }
  .schedule-timeline::before {
    content: '';
    position: absolute;
    left: 0.5rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, oklch(0.55 0.17 155), oklch(0.65 0.12 175));
    border-radius: 1px;
  }
  .schedule-timeline-item {
    position: relative;
    padding-bottom: 1.5rem;
  }
  .schedule-timeline-item::before {
    content: '';
    position: absolute;
    left: -1.1rem;
    top: 0.35rem;
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 50%;
    background: oklch(0.55 0.17 155);
    border: 2px solid white;
    box-shadow: 0 0 0 2px oklch(0.55 0.17 155 / 0.3);
  }
  .schedule-timeline-item.inactive::before {
    background: oklch(0.7 0 0);
    box-shadow: 0 0 0 2px oklch(0.7 0 0 / 0.3);
  }
  .schedule-timeline-item:last-child {
    padding-bottom: 0;
  }

  /* District card styling */
  .district-card {
    position: relative;
    overflow: hidden;
    border-radius: 1rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }
  .district-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px -5px oklch(0 0 0 / 0.1), 0 0 0 1px oklch(0.55 0.17 155 / 0.1);
  }
  .district-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(to right, oklch(0.55 0.17 155), oklch(0.65 0.12 175), oklch(0.55 0.17 155));
  }
  .dark .district-card::after {
    background: linear-gradient(to right, oklch(0.65 0.17 155), oklch(0.75 0.12 175), oklch(0.65 0.17 155));
  }

  /* Cross-school comparison styling */
  .cross-school-comparison {
    display: grid;
    gap: 1rem;
  }
  .cross-school-comparison .comparison-bar {
    height: 0.5rem;
    border-radius: 9999px;
    overflow: hidden;
    background: oklch(0.95 0.02 155);
  }
  .dark .cross-school-comparison .comparison-bar {
    background: oklch(0.25 0.02 155);
  }
  .cross-school-comparison .comparison-bar-fill {
    height: 100%;
    border-radius: 9999px;
    transition: width 0.5s ease;
  }

  /* Report generation progress bar */
  .report-progress {
    position: relative;
    height: 0.5rem;
    border-radius: 9999px;
    overflow: hidden;
    background: oklch(0.93 0.02 155);
  }
  .dark .report-progress {
    background: oklch(0.25 0.02 155);
  }
  .report-progress-fill {
    height: 100%;
    border-radius: 9999px;
    background: linear-gradient(to right, oklch(0.55 0.17 155), oklch(0.65 0.12 175));
    transition: width 0.5s ease;
    position: relative;
  }
  .report-progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, oklch(1 0 0 / 0.3), transparent);
    animation: shimmer-progress 2s ease-in-out infinite;
  }
  @keyframes shimmer-progress {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
  }

  /* Section divider with gradient line */
  .section-divider {
    position: relative;
    height: 1px;
    background: linear-gradient(to right, transparent, oklch(0.55 0.17 155 / 0.3), transparent);
    margin: 1.5rem 0;
  }
  .dark .section-divider {
    background: linear-gradient(to right, transparent, oklch(0.65 0.17 155 / 0.3), transparent);
  }

  /* ─── Advanced Analytics Styles ──────────────────────────────────── */

  /* Chart container with rounded corners and shadow */
  .chart-container {
    background: oklch(1 0 0);
    border-radius: 1rem;
    box-shadow: 0 1px 3px oklch(0 0 0 / 0.06), 0 1px 2px oklch(0 0 0 / 0.04);
    border: 1px solid oklch(0.93 0.005 155);
    overflow: hidden;
  }
  .dark .chart-container {
    background: oklch(0.18 0.015 260);
    box-shadow: 0 1px 3px oklch(0 0 0 / 0.3), 0 0 0 1px oklch(1 0 0 / 6%);
    border-color: oklch(1 0 0 / 8%);
  }

  /* Stat card with gradient */
  .stat-card {
    position: relative;
    border-radius: 1rem;
    padding: 1.25rem;
    overflow: hidden;
    transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
  }
  .stat-card::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0.06;
    background: linear-gradient(135deg, oklch(0.55 0.17 155), oklch(0.55 0.14 175));
    pointer-events: none;
  }
  .stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px -6px oklch(0.55 0.17 155 / 0.15);
  }
  .dark .stat-card:hover {
    box-shadow: 0 8px 24px -6px oklch(0.65 0.17 155 / 0.25);
  }

  /* Heatmap cell styling */
  .heatmap-cell {
    border-radius: 3px;
    transition: all 0.15s ease;
    min-width: 14px;
    min-height: 14px;
  }
  .heatmap-cell:hover {
    transform: scale(1.3);
    box-shadow: 0 0 0 2px oklch(0.55 0.17 155 / 0.3);
    z-index: 1;
  }

  /* Analytics dashboard grid layout */
  .analytics-dashboard {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: 1fr;
  }
  @media (min-width: 768px) {
    .analytics-dashboard {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  .analytics-dashboard-full {
    grid-column: 1 / -1;
  }

  /* Chart loading skeleton */
  .loading-skeleton-chart {
    position: relative;
    overflow: hidden;
    border-radius: 1rem;
    background: oklch(0.94 0.005 155 / 0.5);
    min-height: 200px;
  }
  .dark .loading-skeleton-chart {
    background: oklch(0.22 0.015 260 / 0.5);
  }
  .loading-skeleton-chart::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
      90deg,
      transparent 0%,
      oklch(0.97 0.01 155 / 0.4) 50%,
      transparent 100%
    );
    animation: skeleton-slide 1.5s ease-in-out infinite;
  }
  .dark .loading-skeleton-chart::after {
    background: linear-gradient(
      90deg,
      transparent 0%,
      oklch(0.30 0.01 260 / 0.3) 50%,
      transparent 100%
    );
  }

  /* Predictive badge — risk / excelling */
  .predictive-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    line-height: 1.25rem;
  }
  .predictive-badge-risk {
    background: oklch(0.55 0.22 25 / 0.1);
    color: oklch(0.55 0.22 25);
    border: 1px solid oklch(0.55 0.22 25 / 0.2);
  }
  .dark .predictive-badge-risk {
    background: oklch(0.55 0.22 25 / 0.15);
    color: oklch(0.70 0.19 22);
    border-color: oklch(0.55 0.22 25 / 0.3);
  }
  .predictive-badge-excel {
    background: oklch(0.55 0.17 155 / 0.1);
    color: oklch(0.55 0.17 155);
    border: 1px solid oklch(0.55 0.17 155 / 0.2);
  }
  .dark .predictive-badge-excel {
    background: oklch(0.55 0.17 155 / 0.15);
    color: oklch(0.70 0.17 155);
    border-color: oklch(0.65 0.17 155 / 0.3);
  }
  .predictive-badge-attention {
    background: oklch(0.72 0.19 85 / 0.1);
    color: oklch(0.60 0.18 50);
    border: 1px solid oklch(0.72 0.19 85 / 0.2);
  }
  .dark .predictive-badge-attention {
    background: oklch(0.72 0.19 85 / 0.15);
    color: oklch(0.77 0.19 85);
    border-color: oklch(0.72 0.19 85 / 0.3);
  }

  /* Analytics section tab navigation */
  .analytics-tab {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: oklch(0.55 0.02 260);
    transition: all 0.2s ease;
    cursor: pointer;
    min-height: 44px;
    display: flex;
    align-items: center;
    gap: 0.375rem;
    border: 1px solid transparent;
  }
  .analytics-tab:hover {
    background: oklch(0.55 0.17 155 / 0.06);
    color: oklch(0.55 0.17 155);
  }
  .analytics-tab.active {
    background: oklch(0.55 0.17 155 / 0.1);
    color: oklch(0.55 0.17 155);
    border-color: oklch(0.55 0.17 155 / 0.2);
    font-weight: 600;
  }
  .dark .analytics-tab:hover {
    background: oklch(0.55 0.17 155 / 0.1);
    color: oklch(0.65 0.17 155);
  }
  .dark .analytics-tab.active {
    background: oklch(0.55 0.17 155 / 0.15);
    color: oklch(0.65 0.17 155);
    border-color: oklch(0.65 0.17 155 / 0.3);
  }

  /* Export button group */
  .export-btn-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
  }
  .export-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 500;
    min-height: 44px;
    border: 1px solid oklch(0.93 0.005 155);
    background: oklch(1 0 0);
    color: oklch(0.35 0.02 260);
    transition: all 0.2s ease;
    cursor: pointer;
  }
  .export-btn:hover {
    background: oklch(0.55 0.17 155 / 0.06);
    border-color: oklch(0.55 0.17 155 / 0.2);
    color: oklch(0.55 0.17 155);
  }
  .dark .export-btn {
    background: oklch(0.18 0.015 260);
    border-color: oklch(1 0 0 / 8%);
    color: oklch(0.70 0.02 260);
  }
  .dark .export-btn:hover {
    background: oklch(0.55 0.17 155 / 0.1);
    border-color: oklch(0.65 0.17 155 / 0.3);
    color: oklch(0.65 0.17 155);
  }

  /* Chart description for screen readers */
  .chart-sr-desc {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
  }

  /* ─── Offline / PWA Styles ──────────────────────────────────────── */

  /* Offline indicator bar */
  .offline-indicator-bar {
    z-index: 100;
    font-size: 0.875rem;
    line-height: 1.25rem;
    font-weight: 500;
  }

  /* PWA install prompt */
  .pwa-install-prompt {
    animation: slide-up-fade 0.3s ease-out;
  }

  @keyframes slide-up-fade {
    from {
      opacity: 0;
      transform: translateY(16px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Offline badge pulse */
  .offline-badge-pulse {
    animation: offline-pulse 2s ease-in-out infinite;
  }

  @keyframes offline-pulse {
    0%, 100% {
      opacity: 1;
    }
    50% {
      opacity: 0.6;
    }
  }

  /* Offline sync spinner */
  .offline-sync-spinner {
    animation: offline-sync-spin 1s linear infinite;
  }

  @keyframes offline-sync-spin {
    from {
      transform: rotate(0deg);
    }
    to {
      transform: rotate(360deg);
    }
  }

  /* Cached notebook indicator */
  .cached-notebook-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.125rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }

  /* Rate limit status card */
  .rate-limit-card {
    border: 1px solid oklch(0.55 0.17 155 / 0.2);
    border-radius: 0.75rem;
    padding: 1rem;
    background: oklch(0.98 0.01 155 / 0.5);
  }
  .dark .rate-limit-card {
    border-color: oklch(0.55 0.17 155 / 0.15);
    background: oklch(0.2 0.02 155 / 0.3);
  }

  /* Rate limit bar */
  .rate-limit-bar {
    height: 4px;
    border-radius: 2px;
    background: oklch(0.92 0.01 155);
    overflow: hidden;
  }
  .dark .rate-limit-bar {
    background: oklch(0.25 0.01 155);
  }
  .rate-limit-bar-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.3s ease;
  }

  /* PWA standalone mode adjustments */
  @media (display-mode: standalone) {
    body {
      padding-top: env(safe-area-inset-top);
      padding-bottom: env(safe-area-inset-bottom);
      padding-left: env(safe-area-inset-left);
      padding-right: env(safe-area-inset-right);
    }
  }

  /* Offline mode visual feedback */
  .offline-mode-active {
    filter: none;
  }

  .offline-mode-active .offline-dimmed {
    opacity: 0.7;
    pointer-events: none;
  }

  /* Toast rate limit countdown */
  .rate-limit-countdown {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-variant-numeric: tabular-nums;
    font-weight: 600;
    color: oklch(0.55 0.17 25);
  }

  /* ─── Performance & Styling Polish Animations ────────── */

  /* Card hover lift effect */
  .card-hover-lift {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }
  .card-hover-lift:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px -5px oklch(0.55 0.17 155 / 0.15), 0 4px 10px -4px oklch(0.55 0.17 155 / 0.1);
  }
  .dark .card-hover-lift:hover {
    box-shadow: 0 8px 25px -5px oklch(0.3 0.05 155 / 0.3), 0 4px 10px -4px oklch(0.3 0.05 155 / 0.2);
  }

  /* Gradient line separator */
  .gradient-separator {
    height: 1px;
    background: linear-gradient(to right, transparent, oklch(0.55 0.17 155 / 0.3), oklch(0.55 0.17 155 / 0.5), oklch(0.55 0.17 155 / 0.3), transparent);
  }
  .dark .gradient-separator {
    background: linear-gradient(to right, transparent, oklch(0.55 0.17 155 / 0.2), oklch(0.55 0.17 155 / 0.4), oklch(0.55 0.17 155 / 0.2), transparent);
  }

  /* Badge glow animations */
  @keyframes badge-glow-emerald {
    0%, 100% { box-shadow: 0 0 0 0 oklch(0.55 0.17 155 / 0.3); }
    50% { box-shadow: 0 0 8px 2px oklch(0.55 0.17 155 / 0.2); }
  }
  @keyframes badge-glow-amber {
    0%, 100% { box-shadow: 0 0 0 0 oklch(0.75 0.15 85 / 0.3); }
    50% { box-shadow: 0 0 8px 2px oklch(0.75 0.15 85 / 0.2); }
  }
  @keyframes badge-glow-rose {
    0%, 100% { box-shadow: 0 0 0 0 oklch(0.55 0.2 15 / 0.3); }
    50% { box-shadow: 0 0 8px 2px oklch(0.55 0.2 15 / 0.2); }
  }

  .badge-glow-emerald {
    animation: badge-glow-emerald 2s ease-in-out infinite;
  }
  .badge-glow-amber {
    animation: badge-glow-amber 2s ease-in-out infinite;
  }
  .badge-glow-rose {
    animation: badge-glow-rose 2s ease-in-out infinite;
  }

  /* Staggered entrance animation */
  @keyframes stagger-entrance {
    from {
      opacity: 0;
      transform: translateY(16px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  .stagger-entrance {
    animation: stagger-entrance 0.4s ease-out forwards;
    opacity: 0;
  }
  .stagger-entrance:nth-child(1) { animation-delay: 0ms; }
  .stagger-entrance:nth-child(2) { animation-delay: 60ms; }
  .stagger-entrance:nth-child(3) { animation-delay: 120ms; }
  .stagger-entrance:nth-child(4) { animation-delay: 180ms; }
  .stagger-entrance:nth-child(5) { animation-delay: 240ms; }
  .stagger-entrance:nth-child(6) { animation-delay: 300ms; }
  .stagger-entrance:nth-child(7) { animation-delay: 360ms; }
  .stagger-entrance:nth-child(8) { animation-delay: 420ms; }

  /* Celebration confetti burst */
  @keyframes confetti-burst {
    0% { transform: scale(0); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.8; }
    100% { transform: scale(0); opacity: 0; }
  }

  /* Success animation for save actions */
  @keyframes success-bounce {
    0% { transform: scale(0.8); opacity: 0; }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
  }
  .success-bounce {
    animation: success-bounce 0.4s ease-out;
  }

  /* Animated pill filter */
  @keyframes pill-highlight {
    from {
      background-position: left center;
    }
    to {
      background-position: right center;
    }
  }

  /* Onboarding tour animated highlight */
  @keyframes tour-highlight-ring {
    0% { transform: scale(0.95); opacity: 0.8; }
    50% { transform: scale(1.05); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.8; }
  }
  .tour-highlight-ring {
    animation: tour-highlight-ring 1.5s ease-in-out infinite;
  }

  /* Smooth theme transition */
  .theme-transition * {
    transition: background-color 0.3s ease, color 0.15s ease, border-color 0.3s ease;
  }

  /* Custom scrollbar styling for lists */
  .custom-scrollbar::-webkit-scrollbar {
    width: 6px;
    height: 6px;
  }
  .custom-scrollbar::-webkit-scrollbar-track {
    background: transparent;
  }
  .custom-scrollbar::-webkit-scrollbar-thumb {
    background: oklch(0.55 0.17 155 / 0.2);
    border-radius: 3px;
  }
  .custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background: oklch(0.55 0.17 155 / 0.4);
  }
  .dark .custom-scrollbar::-webkit-scrollbar-thumb {
    background: oklch(0.55 0.17 155 / 0.15);
  }
  .dark .custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background: oklch(0.55 0.17 155 / 0.3);
  }

  /* Attendance grid colored cells */
  .attendance-present {
    background: linear-gradient(135deg, oklch(0.6 0.17 155 / 0.15), oklch(0.6 0.17 155 / 0.08));
    border-left: 3px solid oklch(0.55 0.17 155);
  }
  .dark .attendance-present {
    background: linear-gradient(135deg, oklch(0.55 0.17 155 / 0.2), oklch(0.55 0.17 155 / 0.08));
  }
  .attendance-absent {
    background: linear-gradient(135deg, oklch(0.55 0.2 15 / 0.15), oklch(0.55 0.2 15 / 0.08));
    border-left: 3px solid oklch(0.55 0.2 15);
  }
  .dark .attendance-absent {
    background: linear-gradient(135deg, oklch(0.55 0.2 15 / 0.2), oklch(0.55 0.2 15 / 0.08));
  }
  .attendance-excused {
    background: linear-gradient(135deg, oklch(0.75 0.15 85 / 0.15), oklch(0.75 0.15 85 / 0.08));
    border-left: 3px solid oklch(0.75 0.15 85);
  }
  .dark .attendance-excused {
    background: linear-gradient(135deg, oklch(0.75 0.15 85 / 0.2), oklch(0.75 0.15 85 / 0.08));
  }
  .attendance-late {
    background: linear-gradient(135deg, oklch(0.55 0.1 185 / 0.15), oklch(0.55 0.1 185 / 0.08));
    border-left: 3px solid oklch(0.55 0.1 185);
  }
  .dark .attendance-late {
    background: linear-gradient(135deg, oklch(0.55 0.1 185 / 0.2), oklch(0.55 0.1 185 / 0.08));
  }

  /* Grade color coding */
  .grade-excellent {
    background: linear-gradient(135deg, oklch(0.6 0.17 155 / 0.9), oklch(0.5 0.15 165 / 0.9));
    color: white;
  }
  .grade-good {
    background: linear-gradient(135deg, oklch(0.65 0.13 155 / 0.85), oklch(0.55 0.12 165 / 0.85));
    color: white;
  }
  .grade-satisfactory {
    background: linear-gradient(135deg, oklch(0.75 0.15 85 / 0.8), oklch(0.65 0.13 75 / 0.8));
    color: white;
  }
  .grade-sufficient {
    background: linear-gradient(135deg, oklch(0.75 0.12 55 / 0.8), oklch(0.65 0.1 45 / 0.8));
    color: white;
  }
  .grade-poor {
    background: linear-gradient(135deg, oklch(0.6 0.18 25 / 0.85), oklch(0.55 0.16 15 / 0.85));
    color: white;
  }
  .grade-failing {
    background: linear-gradient(135deg, oklch(0.55 0.2 15 / 0.9), oklch(0.5 0.18 25 / 0.9));
    color: white;
  }

  /* Glass effect for cards */
  .glass-card {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.2);
  }
  .dark .glass-card {
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.05);
  }

  /* Min touch target size (44px) */
  .min-touch {
    min-height: 44px;
    min-width: 44px;
  }

  /* ─── Badge Circle Styling ─────────────────────────────────────── */
  .badge-circle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    position: relative;
    cursor: pointer;
  }
  .badge-circle:hover {
    transform: scale(1.12);
  }
  .badge-earned {
    background: linear-gradient(135deg, oklch(0.65 0.17 155), oklch(0.55 0.14 170));
    box-shadow: 0 2px 12px oklch(0.55 0.17 155 / 0.3);
  }
  .badge-earned:hover {
    box-shadow: 0 4px 20px oklch(0.55 0.17 155 / 0.5);
  }
  .badge-unearned {
    background: oklch(0.92 0 0);
    border: 2px dashed oklch(0.7 0 0);
    opacity: 0.5;
  }
  .dark .badge-unearned {
    background: oklch(0.25 0 0);
    border-color: oklch(0.45 0 0);
  }
  .badge-progress {
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 36px;
    height: 4px;
    border-radius: 2px;
    background: oklch(0.85 0 0);
    overflow: hidden;
  }
  .dark .badge-progress {
    background: oklch(0.35 0 0);
  }
  .badge-progress-fill {
    height: 100%;
    border-radius: 2px;
    background: linear-gradient(90deg, oklch(0.55 0.17 155), oklch(0.65 0.12 175));
    transition: width 0.5s ease;
  }

  /* ─── Celebration Animation ────────────────────────────────────── */
  @keyframes celebration-sparkle {
    0% { opacity: 0; transform: scale(0.5) rotate(0deg); }
    50% { opacity: 1; transform: scale(1.2) rotate(180deg); }
    100% { opacity: 0; transform: scale(0.5) rotate(360deg); }
  }
  @keyframes celebration-bounce {
    0%, 100% { transform: translateY(0); }
    30% { transform: translateY(-12px); }
    50% { transform: translateY(-6px); }
    70% { transform: translateY(-8px); }
  }
  .celebration-sparkle {
    animation: celebration-sparkle 0.8s ease-in-out;
  }
  .celebration-bounce {
    animation: celebration-bounce 0.6s ease-in-out;
  }
  .celebration-ring {
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 2px solid oklch(0.65 0.17 155 / 0.6);
    animation: celebration-ring-pulse 1s ease-out;
  }
  @keyframes celebration-ring-pulse {
    0% { transform: scale(0.8); opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
  }

  /* ─── QR Code Card Styling ─────────────────────────────────────── */
  .qr-card {
    border-radius: 1rem;
    padding: 1.5rem;
    text-align: center;
    background: white;
    box-shadow: 0 4px 16px oklch(0 0 0 / 0.08);
    position: relative;
    overflow: hidden;
  }
  .dark .qr-card {
    background: oklch(0.2 0 0);
    box-shadow: 0 4px 16px oklch(0 0 0 / 0.3);
  }
  .qr-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, oklch(0.55 0.17 155), oklch(0.65 0.12 175), oklch(0.55 0.17 155));
  }
  .qr-card img {
    border-radius: 0.5rem;
    max-width: 100%;
  }

  /* ─── Attendance QR Display ────────────────────────────────────── */
  .attendance-qr-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 2rem;
    background: linear-gradient(135deg, oklch(0.97 0.02 155), oklch(0.95 0.02 175));
    border-radius: 1rem;
    border: 2px solid oklch(0.55 0.17 155 / 0.2);
  }
  .dark .attendance-qr-display {
    background: linear-gradient(135deg, oklch(0.2 0.01 155), oklch(0.18 0.01 175));
    border-color: oklch(0.55 0.17 155 / 0.3);
  }
  .attendance-qr-display .qr-timer {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: oklch(0.5 0 0);
  }
  .dark .attendance-qr-display .qr-timer {
    color: oklch(0.65 0 0);
  }
  .attendance-qr-display .qr-timer-bar {
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background: oklch(0.9 0 0);
    overflow: hidden;
  }
  .dark .attendance-qr-display .qr-timer-bar {
    background: oklch(0.3 0 0);
  }
  .attendance-qr-display .qr-timer-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, oklch(0.55 0.17 155), oklch(0.65 0.12 175));
    transition: width 1s linear;
  }

  /* ─── Student Detail Quick Stats ───────────────────────────────── */
  .quick-stats-bar {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    padding: 0.75rem;
    border-radius: 0.75rem;
    background: oklch(0.97 0.02 155);
    border: 1px solid oklch(0.55 0.17 155 / 0.1);
  }
  .dark .quick-stats-bar {
    background: oklch(0.2 0.01 155);
    border-color: oklch(0.55 0.17 155 / 0.2);
  }
  .quick-stat-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    border-radius: 0.5rem;
    background: white;
    border: 1px solid oklch(0.9 0 0);
    font-size: 0.8125rem;
    white-space: nowrap;
  }
  .dark .quick-stat-item {
    background: oklch(0.25 0 0);
    border-color: oklch(0.35 0 0);
  }

  /* ─── Section Header with Icon ─────────────────────────────────── */
  .section-header-icon {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    cursor: pointer;
    user-select: none;
  }
  .section-header-icon:hover {
    opacity: 0.8;
  }

  /* ─── Gradient Card Background ─────────────────────────────────── */
  .gradient-card-bg {
    background: linear-gradient(135deg, oklch(0.97 0.02 155) 0%, oklch(0.98 0.01 175) 100%);
    border: 1px solid oklch(0.90 0.02 155);
    transition: all 0.3s ease;
  }
  .gradient-card-bg:hover {
    box-shadow: 0 4px 12px oklch(0.55 0.17 155 / 0.1);
  }
  .dark .gradient-card-bg {
    background: linear-gradient(135deg, oklch(0.18 0.02 260) 0%, oklch(0.16 0.01 155) 100%);
    border-color: oklch(0.30 0.02 260);
  }

  /* ─── Sparkline Mini Chart ─────────────────────────────────────── */
  .sparkline-mini {
    display: inline-flex;
    align-items: flex-end;
    gap: 1px;
    height: 16px;
  }
  .sparkline-mini span {
    display: block;
    width: 2px;
    border-radius: 1px;
    background: oklch(0.55 0.17 155);
    transition: height 0.3s ease;
  }
  .dark .sparkline-mini span {
    background: oklch(0.65 0.17 155);
  }

  /* ─── Grade Color Badges (German 1-6 System) ──────────────────── */
  .grade-badge-1 {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    border: 1px solid #059669;
  }
  .grade-badge-2 {
    background: linear-gradient(135deg, #14b8a6, #0d9488);
    color: white;
    border: 1px solid #0d9488;
  }
  .grade-badge-3 {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    border: 1px solid #d97706;
  }
  .grade-badge-4 {
    background: linear-gradient(135deg, #f97316, #ea580c);
    color: white;
    border: 1px solid #ea580c;
  }
  .grade-badge-5 {
    background: linear-gradient(135deg, #f43f5e, #e11d48);
    color: white;
    border: 1px solid #e11d48;
  }
  .grade-badge-6 {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
    color: white;
    border: 1px solid #b91c1c;
  }

  /* ─── Mastery Level Badges ─────────────────────────────────────── */
  .mastery-badge-low {
    background: linear-gradient(135deg, #fda4af, #fb7185);
    color: #9f1239;
    border: 1px solid #fda4af;
  }
  .dark .mastery-badge-low {
    color: #fda4af;
    background: linear-gradient(135deg, rgba(253,164,175,0.15), rgba(251,113,133,0.15));
    border-color: rgba(251,113,133,0.3);
  }
  .mastery-badge-medium {
    background: linear-gradient(135deg, #fde68a, #fbbf24);
    color: #92400e;
    border: 1px solid #fde68a;
  }
  .dark .mastery-badge-medium {
    color: #fde68a;
    background: linear-gradient(135deg, rgba(253,230,138,0.15), rgba(251,191,36,0.15));
    border-color: rgba(251,191,36,0.3);
  }
  .mastery-badge-high {
    background: linear-gradient(135deg, #6ee7b7, #34d399);
    color: #065f46;
    border: 1px solid #6ee7b7;
  }
  .dark .mastery-badge-high {
    color: #6ee7b7;
    background: linear-gradient(135deg, rgba(110,231,183,0.15), rgba(52,211,153,0.15));
    border-color: rgba(52,211,153,0.3);
  }

  /* ─── Newsletter Category Badge ────────────────────────────────── */
  .category-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.125rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.2s ease;
  }
  .category-badge-general {
    background: oklch(0.95 0.01 260);
    color: oklch(0.35 0.02 260);
  }
  .dark .category-badge-general {
    background: oklch(0.22 0.02 260);
    color: oklch(0.75 0.02 260);
  }
  .category-badge-academic {
    background: #dbeafe;
    color: #1e40af;
  }
  .dark .category-badge-academic {
    background: rgba(59,130,246,0.15);
    color: #93c5fd;
  }
  .category-badge-sports {
    background: #dcfce7;
    color: #166534;
  }
  .dark .category-badge-sports {
    background: rgba(34,197,94,0.15);
    color: #86efac;
  }
  .category-badge-arts {
    background: #fae8ff;
    color: #86198f;
  }
  .dark .category-badge-arts {
    background: rgba(168,85,247,0.15);
    color: #d8b4fe;
  }
  .category-badge-events {
    background: #fef3c7;
    color: #92400e;
  }
  .dark .category-badge-events {
    background: rgba(245,158,11,0.15);
    color: #fcd34d;
  }
  .category-badge-community {
    background: #ffe4e6;
    color: #9f1239;
  }
  .dark .category-badge-community {
    background: rgba(244,63,94,0.15);
    color: #fda4af;
  }

  /* ─── Newsletter Preview Card ──────────────────────────────────── */
  .newsletter-card {
    border-radius: 0.75rem;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid oklch(0.90 0.01 155);
    background: white;
  }
  .newsletter-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px oklch(0.55 0.17 155 / 0.1);
  }
  .dark .newsletter-card {
    background: oklch(0.18 0.015 260);
    border-color: oklch(0.30 0.015 260);
  }

  /* ─── Student Avatar Circle ────────────────────────────────────── */
  .avatar-circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    font-weight: 600;
    font-size: 0.75rem;
    line-height: 1;
    transition: all 0.2s ease;
    user-select: none;
    flex-shrink: 0;
  }
  .avatar-circle:hover {
    transform: scale(1.08);
  }

  /* ─── Student Photo Circle ─────────────────────────────────────── */
  .avatar-photo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    overflow: hidden;
    transition: all 0.2s ease;
    flex-shrink: 0;
  }
  .avatar-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .avatar-photo:hover {
    transform: scale(1.08);
    box-shadow: 0 0 0 2px oklch(0.55 0.17 155);
  }

  /* ─── Animated Section Underline ───────────────────────────────── */
  .animated-underline {
    position: relative;
    display: inline-block;
  }
  .animated-underline::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #10b981, #14b8a6);
    border-radius: 1px;
    transition: width 0.4s ease;
  }
  .animated-underline:hover::after {
    width: 100%;
  }

  /* ─── Count-up Animation ───────────────────────────────────────── */
  @keyframes count-up-fade {
    0% { opacity: 0; transform: translateY(8px); }
    100% { opacity: 1; transform: translateY(0); }
  }
  .animate-count-up {
    animation: count-up-fade 0.6s ease-out forwards;
  }

  /* ─── Leaf Animation ───────────────────────────────────────────── */
  @keyframes leaf-sway {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(5deg); }
    75% { transform: rotate(-5deg); }
  }
  .animate-leaf-sway {
    animation: leaf-sway 3s ease-in-out infinite;
  }

  /* ─── Staggered Card Entrance ──────────────────────────────────── */
  @keyframes card-entrance {
    0% { opacity: 0; transform: translateY(12px) scale(0.97); }
    100% { opacity: 1; transform: translateY(0) scale(1); }
  }
  .animate-card-entrance {
    animation: card-entrance 0.4s ease-out forwards;
  }

  /* ─── Gradient Border for Class Cards ──────────────────────────── */
  .gradient-border-card {
    position: relative;
    border-radius: 0.75rem;
    overflow: hidden;
  }
  .gradient-border-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #10b981, #14b8a6);
    border-radius: 0.75rem 0.75rem 0 0;
  }

  /* ─── Task 9: Deep Styling Polish ──────────────────────────────────── */

  /* Activity Timeline with animated dots */
  .activity-timeline {
    position: relative;
    padding-left: 1.75rem;
  }
  .activity-timeline::before {
    content: '';
    position: absolute;
    left: 0.55rem;
    top: 0.25rem;
    bottom: 0.25rem;
    width: 2px;
    background: linear-gradient(to bottom, oklch(0.55 0.17 155 / 0.3), oklch(0.55 0.17 155 / 0.08));
    border-radius: 1px;
  }
  .activity-timeline-item {
    position: relative;
    padding-bottom: 1rem;
  }
  .activity-timeline-item::before {
    content: '';
    position: absolute;
    left: -1.35rem;
    top: 0.4rem;
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: oklch(0.55 0.17 155);
    box-shadow: 0 0 0 3px oklch(0.55 0.17 155 / 0.15);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }
  .activity-timeline-item:hover::before {
    transform: scale(1.4);
    box-shadow: 0 0 0 5px oklch(0.55 0.17 155 / 0.2);
  }
  .activity-timeline-item:last-child {
    padding-bottom: 0;
  }
  .dark .activity-timeline::before {
    background: linear-gradient(to bottom, oklch(0.65 0.17 155 / 0.3), oklch(0.65 0.17 155 / 0.08));
  }
  .dark .activity-timeline-item::before {
    background: oklch(0.65 0.17 155);
    box-shadow: 0 0 0 3px oklch(0.65 0.17 155 / 0.2);
  }

  /* Gradient Card Header */
  .card-header-gradient {
    position: relative;
    overflow: hidden;
    border-radius: 0.75rem 0.75rem 0 0;
  }
  .card-header-gradient::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, oklch(0.55 0.17 155 / 0.08) 0%, oklch(0.55 0.14 175 / 0.05) 100%);
    pointer-events: none;
  }
  .dark .card-header-gradient::before {
    background: linear-gradient(135deg, oklch(0.65 0.17 155 / 0.1) 0%, oklch(0.65 0.14 175 / 0.06) 100%);
  }

  /* Progress Ring (SVG-based) */
  .progress-ring-circle {
    transition: stroke-dashoffset 0.6s ease-out;
    transform: rotate(-90deg);
    transform-origin: 50% 50%;
  }

  /* Glassmorphism Toolbar (for notebooks, editors) */
  .glass-toolbar {
    background: oklch(1 0 0 / 0.75);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid oklch(1 0 0 / 0.35);
    box-shadow:
      0 4px 16px -4px oklch(0 0 0 / 0.1),
      inset 0 0 0 1px oklch(1 0 0 / 0.2);
    border-radius: 0.75rem;
  }
  .dark .glass-toolbar {
    background: oklch(0.18 0.015 260 / 0.7);
    border-color: oklch(1 0 0 / 0.08);
    box-shadow:
      0 4px 16px -4px oklch(0 0 0 / 0.4),
      inset 0 0 0 1px oklch(1 0 0 / 0.05);
  }

  /* Floating Action Button */
  .fab {
    position: fixed;
    bottom: 5rem;
    right: 1.5rem;
    z-index: 30;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 9999px;
    background: linear-gradient(135deg, #10b981, #14b8a6);
    color: white;
    box-shadow: 0 6px 20px -4px oklch(0.55 0.17 155 / 0.45), 0 0 0 1px oklch(0.55 0.17 155 / 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    cursor: pointer;
  }
  .fab:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 10px 30px -6px oklch(0.55 0.17 155 / 0.5), 0 0 0 1px oklch(0.55 0.17 155 / 0.3);
  }
  .fab:active {
    transform: scale(0.95);
  }
  .dark .fab {
    box-shadow: 0 6px 20px -4px oklch(0 0 0 / 0.5), 0 0 0 1px oklch(0.65 0.17 155 / 0.3);
    background: linear-gradient(135deg, #10b981, #14b8a6);
  }
  .dark .fab:hover {
    box-shadow: 0 10px 30px -6px oklch(0 0 0 / 0.6), 0 0 0 1px oklch(0.65 0.17 155 / 0.4);
  }

  /* Notebook Cover Gradient Effects */
  .notebook-cover {
    position: relative;
    overflow: hidden;
    border-radius: 0.75rem;
  }
  .notebook-cover::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 40%;
    background: linear-gradient(180deg, oklch(0.55 0.17 155 / 0.12) 0%, transparent 100%);
    pointer-events: none;
    transition: height 0.3s ease;
  }
  .notebook-cover:hover::before {
    height: 55%;
  }
  .dark .notebook-cover::before {
    background: linear-gradient(180deg, oklch(0.65 0.17 155 / 0.15) 0%, transparent 100%);
  }

  /* Grade Badge Color Coding */
  .grade-badge-excellent {
    background: linear-gradient(135deg, oklch(0.55 0.17 155 / 0.15), oklch(0.55 0.14 175 / 0.1));
    color: oklch(0.45 0.17 155);
    border: 1px solid oklch(0.55 0.17 155 / 0.25);
  }
  .dark .grade-badge-excellent {
    background: linear-gradient(135deg, oklch(0.65 0.17 155 / 0.2), oklch(0.65 0.14 175 / 0.15));
    color: oklch(0.75 0.17 155);
    border-color: oklch(0.65 0.17 155 / 0.3);
  }
  .grade-badge-good {
    background: linear-gradient(135deg, oklch(0.55 0.14 175 / 0.15), oklch(0.60 0.16 195 / 0.1));
    color: oklch(0.45 0.14 175);
    border: 1px solid oklch(0.55 0.14 175 / 0.25);
  }
  .dark .grade-badge-good {
    background: linear-gradient(135deg, oklch(0.65 0.14 175 / 0.2), oklch(0.70 0.16 195 / 0.15));
    color: oklch(0.75 0.14 175);
    border-color: oklch(0.65 0.14 175 / 0.3);
  }
  .grade-badge-average {
    background: linear-gradient(135deg, oklch(0.72 0.19 85 / 0.15), oklch(0.72 0.19 85 / 0.1));
    color: oklch(0.55 0.19 85);
    border: 1px solid oklch(0.72 0.19 85 / 0.25);
  }
  .dark .grade-badge-average {
    background: linear-gradient(135deg, oklch(0.72 0.19 85 / 0.2), oklch(0.72 0.19 85 / 0.15));
    color: oklch(0.82 0.19 85);
    border-color: oklch(0.72 0.19 85 / 0.3);
  }
  .grade-badge-below {
    background: linear-gradient(135deg, oklch(0.65 0.22 15 / 0.15), oklch(0.65 0.22 15 / 0.1));
    color: oklch(0.55 0.22 15);
    border: 1px solid oklch(0.65 0.22 15 / 0.25);
  }
  .dark .grade-badge-below {
    background: linear-gradient(135deg, oklch(0.65 0.22 15 / 0.2), oklch(0.65 0.22 15 / 0.15));
    color: oklch(0.75 0.22 15);
    border-color: oklch(0.65 0.22 15 / 0.3);
  }

  /* Competence Flower Petal Animation */
  @keyframes petal-bloom {
    0% { transform: scale(0.3); opacity: 0; }
    60% { transform: scale(1.05); opacity: 0.9; }
    100% { transform: scale(1); opacity: 1; }
  }
  .animate-petal-bloom {
    animation: petal-bloom 0.6s ease-out backwards;
  }

  /* Radar Chart Gradient Fill */
  .radar-gradient-fill {
    fill: oklch(0.55 0.17 155 / 0.2);
    stroke: oklch(0.55 0.17 155);
    stroke-width: 2;
  }
  .dark .radar-gradient-fill {
    fill: oklch(0.65 0.17 155 / 0.25);
    stroke: oklch(0.65 0.17 155);
  }

  /* Mastery Level Indicator */
  .mastery-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }
  .mastery-indicator:hover {
    transform: scale(1.05);
  }
  .mastery-indicator-1 {
    background: oklch(0.55 0.22 25 / 0.1);
    color: oklch(0.55 0.22 25);
    border: 1px solid oklch(0.55 0.22 25 / 0.2);
  }
  .mastery-indicator-2 {
    background: oklch(0.72 0.19 85 / 0.1);
    color: oklch(0.60 0.18 50);
    border: 1px solid oklch(0.72 0.19 85 / 0.2);
  }
  .mastery-indicator-3 {
    background: oklch(0.55 0.17 155 / 0.1);
    color: oklch(0.45 0.17 155);
    border: 1px solid oklch(0.55 0.17 155 / 0.2);
  }
  .mastery-indicator-4 {
    background: oklch(0.55 0.14 175 / 0.1);
    color: oklch(0.45 0.14 175);
    border: 1px solid oklch(0.55 0.14 175 / 0.2);
  }
  .dark .mastery-indicator-1 {
    background: oklch(0.55 0.22 25 / 0.15);
    color: oklch(0.75 0.19 22);
    border-color: oklch(0.55 0.22 25 / 0.3);
  }
  .dark .mastery-indicator-2 {
    background: oklch(0.72 0.19 85 / 0.15);
    color: oklch(0.82 0.19 85);
    border-color: oklch(0.72 0.19 85 / 0.3);
  }
  .dark .mastery-indicator-3 {
    background: oklch(0.65 0.17 155 / 0.15);
    color: oklch(0.75 0.17 155);
    border-color: oklch(0.65 0.17 155 / 0.3);
  }
  .dark .mastery-indicator-4 {
    background: oklch(0.65 0.14 175 / 0.15);
    color: oklch(0.75 0.14 175);
    border-color: oklch(0.65 0.14 175 / 0.3);
  }

  /* Animated Progress Bar with Gradient */
  .progress-bar-animated {
    position: relative;
    height: 0.5rem;
    border-radius: 9999px;
    overflow: hidden;
    background: oklch(0.93 0.005 155);
  }
  .dark .progress-bar-animated {
    background: oklch(0.25 0.02 155);
  }
  .progress-bar-animated-fill {
    height: 100%;
    border-radius: 9999px;
    background: linear-gradient(90deg, #10b981, #14b8a6);
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
  }
  .progress-bar-animated-fill::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, oklch(1 0 0 / 0.3), transparent);
    animation: shimmer-progress 2s ease-in-out infinite;
  }

  /* Gradient Header Bar */
  .header-gradient {
    background: linear-gradient(135deg, oklch(0.99 0.002 155) 0%, oklch(0.97 0.01 155) 50%, oklch(0.99 0.002 175) 100%);
    border-bottom: 1px solid oklch(0.93 0.005 155);
  }
  .dark .header-gradient {
    background: linear-gradient(135deg, oklch(0.15 0.01 260) 0%, oklch(0.13 0.01 260) 50%, oklch(0.15 0.015 155) 100%);
    border-bottom-color: oklch(1 0 0 / 8%);
  }

  /* Sidebar Active Indicator with Animated Underline */
  .sidebar-active-indicator {
    position: relative;
  }
  .sidebar-active-indicator::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #10b981, #14b8a6);
    border-radius: 1px;
    transition: width 0.3s ease;
  }
  .sidebar-active-indicator.active::after {
    width: 60%;
  }

  /* Notification Bell Pulse */
  @keyframes bell-ring {
    0% { transform: rotate(0deg); }
    10% { transform: rotate(14deg); }
    20% { transform: rotate(-12deg); }
    30% { transform: rotate(10deg); }
    40% { transform: rotate(-8deg); }
    50% { transform: rotate(4deg); }
    60% { transform: rotate(0deg); }
    100% { transform: rotate(0deg); }
  }
  .animate-bell-ring {
    animation: bell-ring 0.8s ease-in-out;
  }

  /* Notification Badge Pulse */
  @keyframes badge-pulse {
    0%, 100% { box-shadow: 0 0 0 0 oklch(0.55 0.17 155 / 0.4); }
    50% { box-shadow: 0 0 0 6px oklch(0.55 0.17 155 / 0); }
  }
  .animate-badge-pulse {
    animation: badge-pulse 2s ease-in-out infinite;
  }

  /* Card Shadow Transition on Hover */
  .card-shadow-transition {
    transition: transform 0.2s ease-out, box-shadow 0.2s ease-out, border-color 0.2s ease-out;
  }
  .card-shadow-transition:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px -6px oklch(0.55 0.17 155 / 0.12), 0 0 0 1px oklch(0.55 0.17 155 / 0.06);
    border-color: oklch(0.55 0.17 155 / 0.2);
  }
  .dark .card-shadow-transition:hover {
    box-shadow: 0 8px 24px -6px oklch(0 0 0 / 0.4), 0 0 0 1px oklch(0.65 0.17 155 / 0.12);
    border-color: oklch(0.65 0.17 155 / 0.2);
  }

  /* Chart Gradient Fill */
  .chart-gradient-fill {
    fill: url(#emeraldGradient);
  }

  /* Breadcrumb Current View Indicator */
  .breadcrumb-active-view {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.75rem;
    border-radius: 0.5rem;
    background: linear-gradient(135deg, oklch(0.55 0.17 155 / 0.08), oklch(0.55 0.14 175 / 0.05));
    color: oklch(0.45 0.17 155);
    font-weight: 600;
    font-size: 0.875rem;
    border: 1px solid oklch(0.55 0.17 155 / 0.12);
  }
  .dark .breadcrumb-active-view {
    background: linear-gradient(135deg, oklch(0.65 0.17 155 / 0.12), oklch(0.65 0.14 175 / 0.08));
    color: oklch(0.75 0.17 155);
    border-color: oklch(0.65 0.17 155 / 0.2);
  }

  /* Student Grid Animation */
  @keyframes student-appear {
    from { opacity: 0; transform: scale(0.9) translateY(4px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
  }
  .animate-student-appear {
    animation: student-appear 0.3s ease-out backwards;
  }

  /* Enhanced Tooltip/Popover Styling */
  .popover-enhanced {
    box-shadow:
      0 8px 30px -6px oklch(0 0 0 / 0.12),
      0 0 0 1px oklch(0.55 0.17 155 / 0.08);
    border-radius: 0.75rem;
  }
  .dark .popover-enhanced {
    box-shadow:
      0 8px 30px -6px oklch(0 0 0 / 0.5),
      0 0 0 1px oklch(0.65 0.17 155 / 0.12);
  }

  /* Gradient border for active class cards */
  .class-card-active {
    position: relative;
    border: 2px solid transparent;
    background-clip: padding-box;
  }
  .class-card-active::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: calc(0.75rem + 2px);
    background: linear-gradient(135deg, #10b981, #14b8a6, #10b981);
    z-index: -1;
    opacity: 0.6;
    transition: opacity 0.3s ease;
  }
  .class-card-active:hover::before {
    opacity: 1;
  }

  /* Report Card View - Badge shimmer animation */
  @keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
  }

  /* Report Card View - Print styles */
  @media print {
    .report-card-print {
      box-shadow: none !important;
      border: 1px solid #e5e7eb !important;
    }
    .report-card-print * {
      color-adjust: exact;
      -webkit-print-color-adjust: exact;
      print-color-adjust: exact;
    }
    .no-print {
      display: none !important;
    }
  }

  /* Seating Chart - Desk hover glow */
  @keyframes desk-glow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
    50% { box-shadow: 0 0 8px 2px rgba(16, 185, 129, 0.3); }
  }

  /* Seating Chart - Empty desk dashed border animation */
  @keyframes dash-march {
    to { stroke-dashoffset: -12; }
  }

  /* Library - Book card hover lift */
  .book-card-hover {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }
  .book-card-hover:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: 0 12px 24px -8px rgba(16, 185, 129, 0.15), 0 4px 8px -2px rgba(0, 0, 0, 0.06);
  }

  /* Library - Availability pulse */
  @keyframes availability-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
  }
  .availability-pulse {
    animation: availability-pulse 2s ease-in-out infinite;
  }

  /* Library - Overdue gradient border */
  .overdue-gradient-border {
    position: relative;
  }
  .overdue-gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 0.5rem;
    padding: 2px;
    background: linear-gradient(135deg, #ef4444, #f97316, #ef4444);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    -webkit-mask-composite: xor;
    pointer-events: none;
  }

  /* Parent Portal - Circular progress gradient */
  @keyframes progress-fill-animate {
    from { stroke-dashoffset: var(--circumference); }
    to { stroke-dashoffset: var(--offset); }
  }

  /* Parent Portal - Tab transition */
  .tab-content-enter {
    animation: tab-enter 0.3s ease-out;
  }
  @keyframes tab-enter {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
  }

  /* Glassmorphism card style */
  .glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
  }
  .dark .glass-card {
    background: rgba(24, 24, 27, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.06);
  }

  /* ─── Round 26: Attendance & Classes Enhancement Utilities ─── */

  /* Attendance Gauge - Circular SVG gauge */
  .attendance-gauge {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .attendance-gauge svg {
    transform: rotate(-90deg);
  }
  .attendance-gauge-track {
    fill: none;
    stroke: oklch(0.93 0.005 155);
    stroke-width: 6;
  }
  .dark .attendance-gauge-track {
    stroke: oklch(0.24 0.02 260);
  }
  .attendance-gauge-fill {
    fill: none;
    stroke-width: 6;
    stroke-linecap: round;
    animation: drawCircle 1.2s ease-out forwards;
    transition: stroke-dashoffset 0.6s ease-out;
  }
  .attendance-gauge-fill.rate-high {
    stroke: oklch(0.55 0.17 155);
  }
  .attendance-gauge-fill.rate-medium {
    stroke: oklch(0.72 0.19 85);
  }
  .attendance-gauge-fill.rate-low {
    stroke: oklch(0.577 0.245 27.325);
  }
  .attendance-gauge-label {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transform: rotate(0deg);
  }

  /* Grade Indicator - Color-coded grade badge (1-6 German scale) */
  .grade-indicator {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.75rem;
    height: 1.75rem;
    padding: 0 0.375rem;
    border-radius: 0.5rem;
    font-size: 0.75rem;
    font-weight: 700;
    line-height: 1;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }
  .grade-indicator:hover {
    transform: scale(1.08);
  }
  .grade-indicator.grade-1 {
    background: oklch(0.55 0.17 155 / 0.15);
    color: oklch(0.45 0.17 155);
    border: 1px solid oklch(0.55 0.17 155 / 0.2);
  }
  .dark .grade-indicator.grade-1 {
    background: oklch(0.65 0.17 155 / 0.15);
    color: oklch(0.75 0.17 155);
    border-color: oklch(0.65 0.17 155 / 0.25);
  }
  .grade-indicator.grade-2 {
    background: oklch(0.53 0.14 175 / 0.15);
    color: oklch(0.43 0.14 175);
    border: 1px solid oklch(0.53 0.14 175 / 0.2);
  }
  .dark .grade-indicator.grade-2 {
    background: oklch(0.63 0.14 175 / 0.15);
    color: oklch(0.73 0.14 175);
    border-color: oklch(0.63 0.14 175 / 0.25);
  }
  .grade-indicator.grade-3 {
    background: oklch(0.72 0.19 85 / 0.15);
    color: oklch(0.62 0.19 85);
    border: 1px solid oklch(0.72 0.19 85 / 0.2);
  }
  .dark .grade-indicator.grade-3 {
    background: oklch(0.82 0.19 85 / 0.15);
    color: oklch(0.82 0.15 85);
    border-color: oklch(0.82 0.19 85 / 0.25);
  }
  .grade-indicator.grade-4 {
    background: oklch(0.75 0.15 60 / 0.15);
    color: oklch(0.65 0.15 60);
    border: 1px solid oklch(0.75 0.15 60 / 0.2);
  }
  .dark .grade-indicator.grade-4 {
    background: oklch(0.85 0.15 60 / 0.15);
    color: oklch(0.85 0.12 60);
    border-color: oklch(0.85 0.15 60 / 0.25);
  }
  .grade-indicator.grade-5 {
    background: oklch(0.65 0.2 40 / 0.15);
    color: oklch(0.55 0.2 40);
    border: 1px solid oklch(0.65 0.2 40 / 0.2);
  }
  .dark .grade-indicator.grade-5 {
    background: oklch(0.75 0.2 40 / 0.15);
    color: oklch(0.75 0.17 40);
    border-color: oklch(0.75 0.2 40 / 0.25);
  }
  .grade-indicator.grade-6 {
    background: oklch(0.577 0.245 27.325 / 0.15);
    color: oklch(0.477 0.245 27.325);
    border: 1px solid oklch(0.577 0.245 27.325 / 0.2);
  }
  .dark .grade-indicator.grade-6 {
    background: oklch(0.677 0.245 27.325 / 0.15);
    color: oklch(0.777 0.2 27.325);
    border-color: oklch(0.677 0.245 27.325 / 0.25);
  }

  /* Card Grid Auto - Auto-filling responsive grid for card layouts */
  .card-grid-auto {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
  }
  @media (max-width: 640px) {
    .card-grid-auto {
      grid-template-columns: 1fr;
    }
  }

  /* Animate Count Up - Number counting animation */
  .animate-count-up {
    animation: countUp 0.8s ease-out forwards;
  }

  /* Status Badge - Status indicator badge with variants */
  .status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
    border: 1px solid transparent;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
  }
  .status-badge:hover {
    transform: scale(1.05);
  }
  .status-badge-present {
    background: oklch(0.55 0.17 155 / 0.12);
    color: oklch(0.45 0.17 155);
    border-color: oklch(0.55 0.17 155 / 0.2);
  }
  .dark .status-badge-present {
    background: oklch(0.65 0.17 155 / 0.15);
    color: oklch(0.75 0.17 155);
    border-color: oklch(0.65 0.17 155 / 0.25);
  }
  .status-badge-late {
    background: oklch(0.72 0.19 85 / 0.12);
    color: oklch(0.62 0.19 85);
    border-color: oklch(0.72 0.19 85 / 0.2);
  }
  .dark .status-badge-late {
    background: oklch(0.82 0.19 85 / 0.15);
    color: oklch(0.82 0.15 85);
    border-color: oklch(0.82 0.19 85 / 0.25);
  }
  .status-badge-absent {
    background: oklch(0.577 0.245 27.325 / 0.12);
    color: oklch(0.477 0.245 27.325);
    border-color: oklch(0.577 0.245 27.325 / 0.2);
  }
  .dark .status-badge-absent {
    background: oklch(0.677 0.245 27.325 / 0.15);
    color: oklch(0.777 0.2 27.325);
    border-color: oklch(0.677 0.245 27.325 / 0.25);
  }
  .status-badge-excused {
    background: oklch(0.72 0.15 85 / 0.12);
    color: oklch(0.62 0.15 85);
    border-color: oklch(0.72 0.15 85 / 0.2);
  }
  .dark .status-badge-excused {
    background: oklch(0.82 0.15 85 / 0.15);
    color: oklch(0.82 0.12 85);
    border-color: oklch(0.82 0.15 85 / 0.25);
  }

  /* Keyframe: countUp - Number counting up */
  @keyframes countUp {
    0% { opacity: 0; transform: translateY(8px); }
    60% { opacity: 1; }
    100% { opacity: 1; transform: translateY(0); }
  }

  /* Keyframe: drawCircle - SVG circle stroke animation */
  @keyframes drawCircle {
    from { stroke-dashoffset: var(--circumference, 251); }
    to { stroke-dashoffset: var(--offset, 0); }
  }

  /* Keyframe: fadeInScale - Fade in with scale */
  @keyframes fadeInScale {
    from { opacity: 0; transform: scale(0.92); }
    to { opacity: 1; transform: scale(1); }
  }

  /* Glassmorphism enhanced card */
  .glass-card-enhanced {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: 0 4px 24px -4px rgba(16, 185, 129, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  }
  .glass-card-enhanced:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px -8px rgba(16, 185, 129, 0.15), 0 2px 4px rgba(0, 0, 0, 0.06);
    border-color: rgba(16, 185, 129, 0.3);
  }
  .dark .glass-card-enhanced {
    background: rgba(24, 24, 27, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 4px 24px -4px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  }
  .dark .glass-card-enhanced:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px -8px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(16, 185, 129, 0.12);
    border-color: rgba(16, 185, 129, 0.15);
  }

  /* Gradient header banner */
  .gradient-header-banner {
    background: linear-gradient(135deg, oklch(0.55 0.17 155 / 0.08) 0%, oklch(0.53 0.14 175 / 0.06) 50%, oklch(0.55 0.17 155 / 0.03) 100%);
    border-bottom: 1px solid oklch(0.55 0.17 155 / 0.1);
  }
  .dark .gradient-header-banner {
    background: linear-gradient(135deg, oklch(0.65 0.17 155 / 0.12) 0%, oklch(0.63 0.14 175 / 0.08) 50%, oklch(0.65 0.17 155 / 0.04) 100%);
    border-bottom-color: oklch(0.65 0.17 155 / 0.15);
  }

  /* Mini calendar date picker */
  .mini-calendar-day {
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
  }
  .mini-calendar-day:hover {
    background: oklch(0.55 0.17 155 / 0.1);
    color: oklch(0.35 0.17 155);
  }
  .dark .mini-calendar-day:hover {
    background: oklch(0.65 0.17 155 / 0.15);
    color: oklch(0.85 0.17 155);
  }
  .mini-calendar-day.selected {
    background: oklch(0.55 0.17 155);
    color: white;
    box-shadow: 0 2px 8px -2px oklch(0.55 0.17 155 / 0.4);
  }
  .dark .mini-calendar-day.selected {
    background: oklch(0.65 0.17 155);
  }
  .mini-calendar-day.today {
    border: 1.5px solid oklch(0.55 0.17 155);
    font-weight: 700;
  }
  .dark .mini-calendar-day.today {
    border-color: oklch(0.65 0.17 155);
  }
  .mini-calendar-day.has-session {
    position: relative;
  }
  .mini-calendar-day.has-session::after {
    content: '';
    position: absolute;
    bottom: 2px;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: oklch(0.55 0.17 155);
  }
  .dark .mini-calendar-day.has-session::after {
    background: oklch(0.65 0.17 155);
  }

  /* Attendance timeline dot */
  .timeline-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 2px solid white;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s ease;
  }
  .timeline-dot:hover {
    transform: scale(1.3);
  }
  .dark .timeline-dot {
    border-color: rgba(24, 24, 27, 0.8);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.1);
  }

  /* Quick action button */
  .quick-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid oklch(0.93 0.005 155);
    background: oklch(0.99 0.002 155);
    color: oklch(0.35 0.01 260);
    transition: all 0.2s ease;
    cursor: pointer;
  }
  .quick-action-btn:hover {
    background: oklch(0.55 0.17 155 / 0.08);
    border-color: oklch(0.55 0.17 155 / 0.2);
    color: oklch(0.45 0.17 155);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px -2px oklch(0.55 0.17 155 / 0.2);
  }
  .dark .quick-action-btn {
    border-color: oklch(0.24 0.02 260);
    background: oklch(0.18 0.015 260);
    color: oklch(0.75 0.005 260);
  }
  .dark .quick-action-btn:hover {
    background: oklch(0.65 0.17 155 / 0.12);
    border-color: oklch(0.65 0.17 155 / 0.25);
    color: oklch(0.85 0.17 155);
    box-shadow: 0 2px 8px -2px rgba(0, 0, 0, 0.3);
  }
}