/* =========================================================
   SOS Textiles — Design System 2026
   Direction artistique : bleu & blanc, moderne, premium
   OKLCH · glassmorphism · fluid type · spring motion
   ========================================================= */
:root {
  /* ---- Palette : bleu & blanc ---- */
  --sos-bg: #f6f9fe;
  --sos-bg-warm: #eef4fd;          /* teinte bleutée douce */
  --sos-bg-dark: #0b1220;          /* navy profond */
  --sos-bg-navy: #0d1a36;
  --sos-bg-elevated: #ffffff;
  --sos-white: #ffffff;

  /* Bleu de marque */
  --sos-blue-50:  #eff5ff;
  --sos-blue-100: #dbe8ff;
  --sos-blue-200: #bcd3ff;
  --sos-blue-300: #8fb6ff;
  --sos-blue-400: #5c90ff;
  --sos-blue-500: #2f6bff;
  --sos-blue-600: #2563eb;
  --sos-blue-700: #1d4ed8;
  --sos-blue-800: #1a3fa8;

  --sos-accent: #2563eb;
  --sos-accent-hover: #1d4ed8;
  --sos-accent-light: rgba(37, 99, 235, 0.10);
  --sos-accent-2: #60a5fa;
  --sos-grad: linear-gradient(120deg, #2563eb 0%, #60a5fa 100%);
  --sos-grad-soft: linear-gradient(120deg, #1d4ed8 0%, #3b82f6 100%);
  --sos-green: #22c55e;

  /* Remaps de compatibilité (anciens noms → bleu) */
  --sos-sage: #2563eb;
  --sos-terracotta: #1d4ed8;
  --sos-charcoal-soft: #334155;
  --sos-linen-dark: #e3ebf6;

  /* Texte */
  --sos-ink: #0f172a;
  --sos-ink-soft: #48566b;
  --sos-ink-muted: #94a3b8;

  /* Lignes */
  --sos-line: #e5ecf6;
  --sos-line-strong: #cdd8ea;

  /* États */
  --sos-success: #16a34a;
  --sos-error: #dc2626;

  /* Typographie */
  --sos-font-display: 'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;
  --sos-font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  /* Rayons & ombres */
  --sos-radius: 18px;
  --sos-radius-sm: 12px;
  --sos-radius-lg: 28px;
  --sos-radius-pill: 999px;
  --sos-shadow-sm: 0 1px 3px rgba(15, 23, 42, .06), 0 8px 24px -12px rgba(15, 23, 42, .10);
  --sos-shadow: 0 2px 6px rgba(15, 23, 42, .06), 0 16px 40px -16px rgba(29, 78, 216, .18);
  --sos-shadow-lg: 0 8px 20px -6px rgba(15, 23, 42, .10), 0 30px 60px -20px rgba(29, 78, 216, .28);
  --sos-shadow-hover: 0 4px 10px rgba(15, 23, 42, .08), 0 24px 50px -16px rgba(29, 78, 216, .28);
  --sos-glow: 0 10px 30px -8px rgba(37, 99, 235, .45);

  /* Glassmorphism */
  --sos-glass: rgba(255, 255, 255, 0.10);
  --sos-glass-border: rgba(255, 255, 255, 0.22);

  --sos-max-width: 1240px;
  --sos-header-h: 76px;
  --sos-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --sos-spring: cubic-bezier(0.34, 1.4, 0.5, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: clip; }

body {
  font-family: var(--sos-font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--sos-ink);
  background: var(--sos-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}

img, svg { max-width: 100%; display: block; }
img { height: auto; }

a { color: inherit; text-decoration: none; transition: color .25s var(--sos-ease); }

h1, h2, h3, h4 {
  font-family: var(--sos-font-display);
  font-weight: 800;
  line-height: 1.12;
  color: var(--sos-ink);
  letter-spacing: -0.025em;
}

::selection { background: rgba(37, 99, 235, .18); }

.container {
  width: min(100% - 2.5rem, var(--sos-max-width));
  margin-inline: auto;
}
.container--narrow { width: min(100% - 2.5rem, 780px); margin-inline: auto; }

/* ---- Boutons ---- */
.sos-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.9rem 1.6rem;
  border-radius: var(--sos-radius-pill);
  font-family: var(--sos-font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.005em;
  border: 1.5px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .3s var(--sos-spring), box-shadow .3s var(--sos-ease),
              background .3s var(--sos-ease), border-color .3s var(--sos-ease), color .3s var(--sos-ease);
}
.sos-btn i { font-size: 0.95em; }

.sos-btn--primary {
  background: var(--sos-grad);
  color: #fff;
  box-shadow: var(--sos-glow);
}
.sos-btn--primary:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 16px 38px -10px rgba(37, 99, 235, .55); }

.sos-btn--secondary {
  background: #fff;
  color: var(--sos-ink);
  border-color: var(--sos-line-strong);
}
.sos-btn--secondary:hover { border-color: var(--sos-accent); color: var(--sos-accent); transform: translateY(-2px); }

.sos-btn--accent {
  background: #fff;
  color: var(--sos-accent);
  box-shadow: 0 8px 24px -8px rgba(0, 0, 0, .35);
}
.sos-btn--accent:hover { color: var(--sos-accent-hover); transform: translateY(-2px); }

.sos-btn--ghost-light {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.32);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.sos-btn--ghost-light:hover { background: rgba(255, 255, 255, 0.22); color: #fff; }

.sos-btn--lg { padding: 1.05rem 2rem; font-size: 1rem; }
.sos-btn--sm { padding: 0.62rem 1.15rem; font-size: 0.85rem; }
.sos-btn--block { width: 100%; }

/* ---- Cartes ---- */
.sos-card {
  background: var(--sos-bg-elevated);
  border-radius: var(--sos-radius);
  padding: 1.75rem;
  box-shadow: var(--sos-shadow-sm);
  border: 1px solid var(--sos-line);
  transition: box-shadow .35s var(--sos-ease), transform .35s var(--sos-ease);
}

/* ---- Sections ---- */
.sos-section { padding: clamp(3.5rem, 7vw, 6.5rem) 0; }
.sos-section--warm { background: var(--sos-bg-warm); }
.sos-section--white { background: var(--sos-white); }
.sos-section--dark { background: var(--sos-bg-dark); color: #fff; }
.sos-section--dark h2, .sos-section--dark h3 { color: #fff; }

/* Badge / eyebrow */
.sos-badge,
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: var(--sos-radius-pill);
  color: var(--sos-blue-700);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.section-label__dot,
.sos-badge__dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--sos-green);
  box-shadow: 0 0 0 0 rgba(34, 197, 94, .6);
  animation: sos-pulse 2.4s ease-out infinite;
}
@keyframes sos-pulse {
  0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, .55); }
  70% { box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.section-title { font-size: clamp(1.9rem, 4.2vw, 2.9rem); margin-bottom: 1rem; }
.section-lead { font-size: clamp(1rem, 1.6vw, 1.15rem); color: var(--sos-ink-soft); max-width: 580px; line-height: 1.7; }
.text-gradient {
  background: var(--sos-grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---- Grilles ---- */
.sos-grid-2, .sos-grid-3, .sos-grid-4 { display: grid; gap: 1.5rem; }
@media (min-width: 640px) {
  .sos-grid-2 { grid-template-columns: repeat(2, 1fr); }
  .sos-grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .sos-grid-3 { grid-template-columns: repeat(3, 1fr); }
  .sos-grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ---- Utilitaires ---- */
.text-center { text-align: center; }
.text-muted { color: var(--sos-ink-soft); }
.text-white-muted { color: rgba(255, 255, 255, 0.66); }
.mt-1 { margin-top: .5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.5rem; } .mt-4 { margin-top: 2rem; }
.mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 1.5rem; } .mb-4 { margin-bottom: 2rem; }
.mx-auto { margin-inline: auto; }

/* ---- Reveal on scroll ---- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--sos-ease), transform .7s var(--sos-ease); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal--d1 { transition-delay: .08s; }
.reveal--d2 { transition-delay: .16s; }
.reveal--d3 { transition-delay: .24s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}