:root {
  /* ===== COULEURS THÈME VIOLET-BLEU ===== */
  --color-bg-primary: #e2e8f0;
  --color-bg-secondary: #ffffff;
  --color-bg-card: #ffffff;
  --color-bg-off-white: #f0f4f8;
  --color-text-primary: #2d3748;
  --color-text-secondary: #4a5568;
  --color-text-muted: #718096;
  --color-accent: #6FC0F2;
  --color-accent-hover: #5BACDE;
  --color-accent-light: rgba(111, 192, 242, 0.1);
  --color-accent-dark: #4798CA;
  --color-border: #e2e8f0;
  --color-shadow: rgba(0, 0, 0, 0.08);

  /* Couleurs complémentaires */
  --color-sky-light: #E8F6FC;
  --color-sky-medium: #A7D9F2;
  --color-sky-dark: #4798CA;
  --color-gray-light: #f7fafc;
  --color-gray-medium: #cbd5e0;
  --color-gray-dark: #2d3748;

  /* ===== COULEURS TYPES DIPLÔMES ===== */
  --color-degree: #6FC0F2;
  --color-certificate: #6FC0F2;
  --color-badge: #6FC0F2;
  --color-award: #6FC0F2;

  /* ===== TYPOGRAPHIE ===== */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'Fira Code', monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;

  /* ===== ESPACEMENTS ===== */
  --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;
  --space-20: 5rem;

  /* ===== LAYOUT ===== */
  --sidebar-width: 80px;
  --content-max-width: 1400px;
  --card-radius: 12px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* ===== OMBRES ===== */
  --shadow-sm: 0 1px 2px var(--color-shadow);
  --shadow-md: 0 4px 6px var(--color-shadow);
  --shadow-lg: 0 10px 25px var(--color-shadow);
  --shadow-card: 0 20px 50px rgba(0, 0, 0, 0.1);

  /* ===== TRANSITIONS ===== */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* ===== Z-INDEX ===== */
  --z-sidebar: 100;
  --z-header: 200;
  --z-modal: 300;
  --z-tooltip: 400;
}

/* ===== DARK MODE ===== */
[data-theme="dark"] {
  --color-bg-primary: #1e293b;
  --color-bg-secondary: #0f172a;
  --color-bg-card: #1e293b;
  --color-bg-off-white: #334155;
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #94a3b8;
  --color-accent: #6FC0F2;
  --color-accent-hover: #5BACDE;
  --color-accent-light: rgba(111, 192, 242, 0.2);
  --color-border: #334155;
  --color-shadow: rgba(0, 0, 0, 0.4);
  --color-gray-light: #334155;
  --color-gray-medium: #475569;
  --color-gray-dark: #f1f5f9;
}