/* ============================================
   CHANSON — Site-wide styles
   Dark mode, scroll reveals, utilities
   ============================================ */

/* Material Symbols */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  vertical-align: middle;
}

/* Hide scrollbar */
.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }

/* ---- Dark Mode ---- */
.dark body,
.dark main,
.dark {
  color-scheme: dark;
}

.dark .bg-surface { background-color: #0c1117; }
.dark .bg-surface-container-lowest { background-color: #161b22; }
.dark .bg-surface-container-low { background-color: #1c2128; }
.dark .bg-surface-container { background-color: #222224; }
.dark .bg-surface-container-high { background-color: #2a2a2c; }
.dark .bg-surface-container-highest { background-color: #333335; }
.dark .bg-white { background-color: #1a1a1a; }
.dark .bg-background { background-color: #0c1117; }

.dark .text-on-surface { color: #f1f5f9; }
.dark .text-on-surface-variant { color: #94a3b8; }
.dark .text-on-background { color: #f1f5f9; }
.dark .text-zinc-900 { color: #f1f5f9; }
.dark .text-zinc-600 { color: #94a3b8; }

.dark .border-zinc-200\/20 { border-color: rgba(255,255,255,0.08); }
.dark .border-outline-variant { border-color: rgba(255,255,255,0.12); }
.dark .border-outline-variant\/10 { border-color: rgba(255,255,255,0.06); }
.dark .border-outline-variant\/20 { border-color: rgba(255,255,255,0.1); }
.dark .border-outline-variant\/30 { border-color: rgba(255,255,255,0.12); }

.dark .shadow-sm { box-shadow: 0 1px 3px rgba(0,0,0,0.4); }
.dark .shadow-lg { box-shadow: 0 8px 24px rgba(0,0,0,0.5); }
.dark .shadow-xl { box-shadow: 0 20px 60px rgba(0,0,0,0.6); }

/* Dark nav */
.dark nav.fixed,
.dark header.fixed {
  background: rgba(12,17,23,0.85);
  border-bottom-color: rgba(255,255,255,0.06);
}

/* Dark cards */
.dark .bg-white\/80 { background-color: rgba(26,26,26,0.8); }
.dark .bg-white\/70 { background-color: rgba(17,17,17,0.8); }
.dark .bg-white\/5 { background-color: rgba(255,255,255,0.05); }
.dark .bg-white\/90 { background-color: rgba(30,30,30,0.9); }
.dark .bg-white { background-color: #1a1a1a; }

/* Dark inputs */
.dark input, .dark textarea, .dark select {
  color: #f1f5f9;
  background-color: transparent;
}
.dark input::placeholder { color: #475569; }

/* Dark table */
.dark table { color: #f1f5f9; }
.dark thead tr { background-color: #1c2128; }
.dark tbody tr:nth-child(even) { background-color: rgba(255,255,255,0.02); }

/* ---- Scroll Reveal Animations ---- */
[data-reveal], .reveal-child {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-reveal].revealed, .reveal-child.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Slide variants */
[data-reveal="left"] {
  transform: translateX(-30px);
}
[data-reveal="right"] {
  transform: translateX(30px);
}
[data-reveal="scale"] {
  transform: scale(0.96);
}
[data-reveal="left"].revealed,
[data-reveal="right"].revealed,
[data-reveal="scale"].revealed {
  transform: none;
}

/* Reduced motion — show content immediately */
@media (prefers-reduced-motion: reduce) {
  [data-reveal], .reveal-child {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---- FAQ Accordion ---- */
.faq-content {
  max-height: 0;
  overflow: hidden;
  padding-bottom: 0;
  padding-top: 0;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              padding-bottom 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              padding-top 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- Breath Shadow (premium card shadow) ---- */
.breath-shadow {
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05),
              0 20px 40px -8px rgba(0,0,0,0.08);
}
.dark .breath-shadow {
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.3),
              0 20px 40px -8px rgba(0,0,0,0.5);
}

/* ---- Smooth Scrolling ---- */
html {
  scroll-behavior: smooth;
}

/* ---- Selection ---- */
::selection {
  background-color: rgba(8, 145, 178, 0.15);
  color: inherit;
}

/* ---- Typography utilities ---- */
.tight-tracking { letter-spacing: -0.03em; }
.label-tracking { letter-spacing: 0.06em; }

/* ---- Text gradient utility ---- */
.text-gradient-slate {
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  background-image: linear-gradient(135deg, #0f172a 0%, #475569 100%);
}
.dark .text-gradient-slate {
  background-image: linear-gradient(135deg, #ffffff 0%, #94a3b8 100%);
}
.text-gradient-cyan {
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  background-image: linear-gradient(135deg, #06b6d4 0%, #0e7490 100%);
}

/* ---- Card elevation ---- */
.card-elevated {
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.06);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.card-elevated:hover {
  box-shadow: 0 4px 6px rgba(0,0,0,0.04), 0 20px 48px rgba(0,0,0,0.12);
  transform: translateY(-2px);
}
.dark .card-elevated {
  border-color: rgba(255,255,255,0.06);
  box-shadow: 0 1px 3px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.4);
}
.dark .card-elevated:hover {
  box-shadow: 0 4px 6px rgba(0,0,0,0.4), 0 20px 48px rgba(0,0,0,0.6);
}

/* ---- Safe area for mobile bottom nav ---- */
.safe-area-pb {
  padding-bottom: max(8px, env(safe-area-inset-bottom));
}