/**
 * Edutrack Student Interface Design Tokens
 * Scandinavian Warm Professional aesthetic
 * Extends existing Tailwind config with semantic tokens
 */

:root {
  /* === BRAND COLORS (Legacy Blue) === */
  --color-primary-50: #EBF4FF;
  --color-primary-100: #D6E9FF;
  --color-primary-200: #AED3FF;
  --color-primary-300: #7DB8FF;
  --color-primary-400: #4A9BFF;
  --color-primary-500: #2E70DA;
  --color-primary-600: #1E5AB8;
  --color-primary-700: #1A4A94;
  --color-primary-800: #163B75;
  --color-primary-900: #122E5C;

  --color-secondary-50: #FDF5E6;
  --color-secondary-100: #FCEBD0;
  --color-secondary-200: #F9D7A0;
  --color-secondary-300: #F6C370;
  --color-secondary-400: #F3AF40;
  --color-secondary-500: #F6B745;
  --color-secondary-600: #D89E2E;
  --color-secondary-700: #B8851F;

  /* === WARM SCANDINAVIAN PALETTE (Open Design) === */
  --od-bg: #f7f6f3;
  --od-surface: #ffffff;
  --od-fg: #0a1628;
  --od-muted: #6b6f78;
  --od-border: #e5e2dc;
  --od-accent: #c9a44a;
  --od-accent-hover: #b08d3a;
  --od-navy: #0b4f8c;
  --od-navy-hover: #083d6e;
  --od-green: #1b9e3b;
  --od-green-hover: #158030;
  --od-danger: #dc2626;

  --od-accent-soft: color-mix(in oklch, var(--od-accent) 14%, transparent);
  --od-navy-soft: color-mix(in oklch, var(--od-navy) 12%, transparent);
  --od-green-soft: color-mix(in oklch, var(--od-green) 12%, transparent);
  --od-fg-soft: color-mix(in oklch, var(--od-fg) 6%, transparent);

  /* === SEMANTIC SURFACES === */
  --surface-primary: #FAFBFC;
  --surface-secondary: #FFFFFF;
  --surface-tertiary: #F3F4F6;
  --surface-elevated: #FFFFFF;
  --surface-warm: #FDF8F3;
  --surface-success: #ECFDF5;
  --surface-warning: #FFFBEB;
  --surface-error: #FEF2F2;
  --surface-info: #EFF6FF;

  /* === TEXT COLORS === */
  --text-primary: #1F2937;
  --text-secondary: #4B5563;
  --text-tertiary: #9CA3AF;
  --text-inverse: #FFFFFF;
  --text-muted: #6B7280;

  /* === BORDERS === */
  --border-primary: #E5E7EB;
  --border-secondary: #F3F4F6;
  --border-focus: #2E70DA;

  /* === ACCENTS === */
  --accent-primary: #2E70DA;
  --accent-primary-hover: #1E5AB8;
  --accent-primary-active: #1A4A94;
  --accent-secondary: #F6B745;
  --accent-secondary-hover: #D89E2E;

  /* === STATUS === */
  --status-success: #10B981;
  --status-success-bg: #ECFDF5;
  --status-warning: #F59E0B;
  --status-warning-bg: #FFFBEB;
  --status-error: #EF4444;
  --status-error-bg: #FEF2F2;
  --status-info: #3B82F6;
  --status-info-bg: #EFF6FF;

  /* === TYPOGRAPHY (Open Design) === */
  --font-display: 'Iowan Old Style', 'Charter', Georgia, 'Times New Roman', serif;
  --font-mono: ui-monospace, 'JetBrains Mono', 'SF Mono', Menlo, monospace;

  /* === SPACING (8px base) === */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* === SHADOWS === */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
  --shadow-card: 0 0 0 1px rgba(0, 0, 0, 0.03), 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-card-hover: 0 0 0 1px rgba(0, 0, 0, 0.03), 0 12px 24px rgba(0, 0, 0, 0.08);
  --shadow-inset: inset 0 2px 4px 0 rgba(0, 0, 0, 0.04);

  /* === RADIUS === */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;
  --radius-full: 9999px;

  /* === MOTION === */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
  --easing-default: cubic-bezier(0.4, 0, 0.2, 1);
  --easing-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --easing-out: cubic-bezier(0, 0, 0.2, 1);
}

/* === BUTTON PATTERNS === */
.btn-primary {
  background-color: var(--accent-primary);
  color: var(--text-inverse);
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-lg);
  font-weight: 500;
  transition: background-color var(--duration-fast) var(--easing-default),
              transform var(--duration-fast) var(--easing-default);
}
.btn-primary:hover {
  background-color: var(--accent-primary-hover);
  transform: translateY(-1px);
}
.btn-primary:active {
  background-color: var(--accent-primary-active);
  transform: translateY(0);
}

/* === DARK MODE OVERRIDES (Open Design) === */
.dark {
  --od-bg: #0f1623;
  --od-surface: #1a2236;
  --od-fg: #f0f2f5;
  --od-muted: #8b92a8;
  --od-border: #2a324a;
  --od-accent: #d4b156;
  --od-accent-hover: #e0c06a;
  --od-navy: #5b9bd5;
  --od-navy-hover: #7ab0e0;
  --od-green: #34d399;
  --od-green-hover: #4ade80;
  --od-danger: #f87171;

  --od-accent-soft: color-mix(in oklch, var(--od-accent) 14%, transparent);
  --od-navy-soft: color-mix(in oklch, var(--od-navy) 15%, transparent);
  --od-green-soft: color-mix(in oklch, var(--od-green) 15%, transparent);
  --od-fg-soft: color-mix(in oklch, var(--od-fg) 8%, transparent);
}

/* === REDUCED MOTION === */
@media (prefers-reduced-motion: reduce) {
  .btn-primary:hover {
    transform: none;
  }
}

/* Visible keyboard focus everywhere (links/buttons had no focus style) */
:focus-visible {
  outline: 2px solid var(--od-accent, #c9a44a);
  outline-offset: 2px;
}