/* ═══════════════════════════════════════════════════════════
   TARA Institut — Design Tokens
   Variables CSS : couleurs, typographie, espacements, effets
   ═══════════════════════════════════════════════════════════ */

:root {
  /* ── Couleurs principales — Charte TARA Institut ── */
  /* Rouge TARA (logo "TARA") */
  --color-red:         #D42323;
  --color-red-light:   #E53535;
  --color-red-dark:    #B01C1C;
  --color-red-pale:    rgba(212, 35, 35, 0.08);

  /* Bleu marine TARA (logo "CFPL") */
  --color-navy:        #1A2579;
  --color-navy-light:  #2333A0;
  --color-navy-dark:   #111A5E;
  --color-navy-pale:   rgba(26, 37, 121, 0.08);

  /* Aliases fonctionnels */
  --color-primary:     var(--color-navy);
  --color-primary-light: var(--color-navy-light);
  --color-accent:      var(--color-red);
  --color-accent-dark: var(--color-red-dark);
  --color-accent-light:var(--color-red-light);

  /* Conservés pour compatibilité système */
  --color-blue:        #1A2579;
  --color-blue-mid:    #1A2579;
  --color-blue-light:  #2333A0;
  --color-success:     #10B981;
  --color-danger:      #EF4444;
  --color-warning:     #F59E0B;

  /* ── Surface & fond (Light mode par défaut) ── */
  --bg-base:           #F8FAFC;
  --bg-surface:        #FFFFFF;
  --bg-surface-2:      #F1F5F9;
  --bg-surface-3:      #E2E8F0;
  --bg-navy:           #0D1B3E;
  --bg-overlay:        rgba(13, 27, 62, 0.06);

  /* ── Texte (Light mode) ── */
  --text-primary:      #0F172A;
  --text-secondary:    #475569;
  --text-muted:        #94A3B8;
  --text-inverse:      #F8FAFC;
  --text-accent:       #F59E0B;
  --text-blue:         #1E40AF;

  /* ── Bordures ── */
  --border-light:      #E2E8F0;
  --border-mid:        #CBD5E1;
  --border-strong:     #94A3B8;

  /* ── Ombres ── */
  --shadow-xs:   0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-sm:   0 2px 8px rgba(15, 23, 42, 0.08);
  --shadow-md:   0 4px 20px rgba(15, 23, 42, 0.10);
  --shadow-lg:   0 8px 40px rgba(15, 23, 42, 0.12);
  --shadow-xl:   0 16px 64px rgba(15, 23, 42, 0.14);
  --shadow-card: 0 2px 12px rgba(15, 23, 42, 0.08), 0 0 0 1px rgba(15, 23, 42, 0.04);
  --shadow-glow:        0 0 32px rgba(26, 37, 121, 0.22);
  --shadow-red-glow:    0 0 32px rgba(212, 35, 35, 0.25);
  --shadow-accent-glow: 0 0 24px rgba(212, 35, 35, 0.30);

  /* ── Radius ── */
  --radius-xs:   4px;
  --radius-sm:   8px;
  --radius-md:   12px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-2xl:  32px;
  --radius-full: 9999px;

  /* ── Typographie ── */
  --font-heading: 'Bricolage Grotesque', 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-body:    'Inter', 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-serif:   'DM Serif Display', Georgia, serif;
  --font-mono:    'JetBrains Mono', monospace;

  --text-xs:   clamp(0.7rem,  1vw, 0.75rem);
  --text-sm:   clamp(0.8rem,  1.2vw, 0.875rem);
  --text-base: clamp(0.9rem,  1.4vw, 1rem);
  --text-lg:   clamp(1rem,    1.6vw, 1.125rem);
  --text-xl:   clamp(1.1rem,  1.8vw, 1.25rem);
  --text-2xl:  clamp(1.2rem,  2vw,   1.5rem);
  --text-3xl:  clamp(1.5rem,  2.5vw, 1.875rem);
  --text-4xl:  clamp(1.8rem,  3vw,   2.25rem);
  --text-5xl:  clamp(2.2rem,  4vw,   3rem);
  --text-6xl:  clamp(2.8rem,  5vw,   3.75rem);
  --text-7xl:  clamp(3.2rem,  6vw,   4.5rem);

  --weight-regular:  400;
  --weight-medium:   500;
  --weight-semibold: 600;
  --weight-bold:     700;
  --weight-extrabold:800;
  --weight-black:    900;

  --leading-tight:  1.15;
  --leading-snug:   1.3;
  --leading-normal: 1.6;
  --leading-relaxed:1.75;

  /* ── Espacements ── */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --space-32: 128px;

  /* ── Layout ── */
  --container-max: 1200px;
  --container-wide: 1400px;
  --container-narrow: 760px;
  --container-padding: clamp(1rem, 4vw, 2rem);

  /* ── Transitions ── */
  --ease-smooth:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:       cubic-bezier(0.4, 0, 1, 1);
  --ease-out:      cubic-bezier(0, 0, 0.2, 1);
  --ease-bounce:   cubic-bezier(0.34, 1.56, 0.64, 1);

  --duration-fast:   150ms;
  --duration-base:   250ms;
  --duration-slow:   400ms;
  --duration-slower: 600ms;

  --transition-base:   all var(--duration-base) var(--ease-smooth);
  --transition-color:  color var(--duration-fast) var(--ease-out),
                       background-color var(--duration-fast) var(--ease-out),
                       border-color var(--duration-fast) var(--ease-out);
  --transition-shadow: box-shadow var(--duration-base) var(--ease-smooth),
                       transform var(--duration-base) var(--ease-smooth);

  /* ── Z-index ── */
  --z-base:    0;
  --z-raised:  10;
  --z-dropdown:200;
  --z-sticky:  300;
  --z-overlay: 400;
  --z-modal:   500;
  --z-toast:   600;

  /* ── Glassmorphism ── */
  --glass-bg:     rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-blur:   blur(16px);

  /* ── Dégradés TARA ── */
  --gradient-tara:      linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
  --gradient-tara-red:  linear-gradient(135deg, var(--color-red-dark) 0%, var(--color-red) 100%);
  --gradient-hero:      linear-gradient(135deg, var(--color-navy-dark) 0%, #1A2579 60%, #2333A0 100%);
  --gradient-cta:       linear-gradient(135deg, var(--color-navy) 0%, #1E308A 100%);

  /* ── Header ── */
  --topbar-height:       40px;
  --navbar-height:       82px;
  --navbar-height-small: 66px;
  --navbar-bg:           rgba(255, 255, 255, 0.85);
  --navbar-border:       rgba(226, 232, 240, 0.9);
}

/* ═══════════════════════════════════════════════════════════
   DARK MODE
   ═══════════════════════════════════════════════════════════ */
[data-theme="dark"] {
  --bg-base:       #080E1E;
  --bg-surface:    #0F1829;
  --bg-surface-2:  #162035;
  --bg-surface-3:  #1E2D4A;
  --bg-overlay:    rgba(248, 250, 252, 0.04);

  --text-primary:  #F1F5F9;
  --text-secondary:#94A3B8;
  --text-muted:    #64748B;
  --text-inverse:  #0F172A;
  --text-blue:     #60A5FA;

  --border-light:  rgba(255,255,255,0.07);
  --border-mid:    rgba(255,255,255,0.12);
  --border-strong: rgba(255,255,255,0.2);

  --shadow-xs:   0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-sm:   0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md:   0 4px 20px rgba(0, 0, 0, 0.5);
  --shadow-lg:   0 8px 40px rgba(0, 0, 0, 0.6);
  --shadow-xl:   0 16px 64px rgba(0, 0, 0, 0.7);
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255,255,255,0.05);
  --shadow-glow: 0 0 40px rgba(26, 37, 121, 0.35);

  --glass-bg:     rgba(10, 14, 40, 0.82);
  --glass-border: rgba(255, 255, 255, 0.08);

  --navbar-bg:     rgba(6, 9, 28, 0.92);
  --navbar-border: rgba(255, 255, 255, 0.07);
}