/* ============
   Zhe Xuan Fine Art Gallery — Site Styles
   - Consolidated custom utilities to complement Tailwind CDN
   - Removed Vite demo styles (#root, .logo, .read-the-docs, spin anims)
   ============ */

:root {
  --background: 35 33% 98%;
  --foreground: 230 15% 12%;

  --card: 0 0% 100%;
  --card-foreground: 230 15% 12%;

  --primary: 268 60% 45%;
  --primary-foreground: 0 0% 100%;

  --secondary: 230 20% 95%;
  --secondary-foreground: 230 25% 20%;

  --muted: 230 20% 93%;
  --muted-foreground: 230 10% 40%;

  --border: 230 18% 88%;
  --ring: 268 60% 45%;
}

/* Typography helpers */
.font-display { font-family: "Playfair Display", ui-serif, Georgia, serif; }

/* Color utilities to pair with Tailwind's class names */
.bg-background { background-color: hsl(var(--background)); }
.text-foreground { color: hsl(var(--foreground)); }
.bg-card { background-color: hsl(var(--card)); }
.text-muted-foreground { color: hsl(var(--muted-foreground)); }
.bg-secondary { background-color: hsl(var(--secondary)); }
.text-primary { color: hsl(var(--primary)); }

/* Borders */
.border-default { border-color: hsl(var(--border)); }

/* Global layout atoms */
.section { padding-block: 4rem; }
@media (min-width: 768px) { .section { padding-block: 5rem; } }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(180%) blur(6px);
  background-color: hsla(var(--background), 0.8);
  border-bottom: 1px solid hsl(var(--border));
}
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid hsl(var(--border));
  color: hsl(var(--muted-foreground));
}

/* Navigation */
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem .75rem;
  border-radius: .75rem;
  color: hsl(var(--foreground));
  text-decoration: none;
  transition: background-color .2s ease, color .2s ease;
}
.nav-link:hover { background-color: hsl(var(--secondary)); }

.logo{
  width: 4%;
  height: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .675rem 1rem;
  border-radius: .8rem;
  font-weight: 600;
  text-decoration: none;
  transition: transform .15s ease, box-shadow .2s ease, background-color .2s ease;
  border: 1px solid transparent;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background-color: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
  box-shadow: 0 6px 16px hsla(var(--primary), .25);
}
.btn-primary:hover { box-shadow: 0 8px 20px hsla(var(--primary), .35); }

.btn-secondary {
  background-color: hsl(var(--secondary));
  color: hsl(var(--secondary-foreground));
  border-color: hsl(var(--border));
}

/* Cards */
.card {
  background-color: hsl(var(--card));
  color: hsl(var(--card-foreground));
  border: 1px solid hsl(var(--border));
  border-radius: 1rem;
  box-shadow: 0 1px 0 hsla(0 0% 0% / 0.02);
}

/* Effects */
.shadow-elegant {
  box-shadow:
    0 1px 1px rgba(0,0,0,.03),
    0 8px 24px rgba(0,0,0,.06);
}
.gradient-primary {
  background-image:
    radial-gradient(1200px 600px at 10% -20%, hsl(var(--primary) / .18), transparent 60%),
    radial-gradient(1200px 800px at 90% 120%, hsl(var(--primary) / .20), transparent 60%),
    linear-gradient(180deg, hsl(var(--card)), hsl(var(--secondary)));
}

/* Animations */
@keyframes fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.animate-fade-in { animation: fade-in .6s ease both; }

/* Media helpers (optional) */
img { max-width: 100%; height: auto; display: block; }

/* ===== Removed =====
#root, .logo, .logo:hover, @keyframes logo-spin, .read-the-docs, demo .card padding
===================== */


/* ===== AOS (Animate on Scroll) ===== */
:root { --ease-out: cubic-bezier(.16,1,.3,1); }

.aos { opacity: 0; will-change: transform, opacity; transition: transform .8s var(--ease-out), opacity .8s var(--ease-out); }
.aos.inview { opacity: 1; transform: none !important; }

/* Variants */
.aos.fade-up { transform: translateY(24px); }
.aos.fade-down { transform: translateY(-24px); }
.aos.slide-left { transform: translateX(28px); }
.aos.slide-right { transform: translateX(-28px); }
.aos.scale-in { transform: scale(.92); }
.aos.tilt-in { transform: perspective(800px) rotateX(8deg) translateY(8px); transform-origin: top; }

/* Stagger children */
[data-stagger] > * { opacity: 0; transform: translateY(14px); transition: transform .6s var(--ease-out), opacity .6s var(--ease-out); }
[data-stagger].inview > * { opacity: 1; transform: none; }
[data-stagger].inview > *:nth-child(1) { transition-delay: .05s; }
[data-stagger].inview > *:nth-child(2) { transition-delay: .12s; }
[data-stagger].inview > *:nth-child(3) { transition-delay: .18s; }
[data-stagger].inview > *:nth-child(4) { transition-delay: .24s; }
[data-stagger].inview > *:nth-child(5) { transition-delay: .30s; }
[data-stagger].inview > *:nth-child(6) { transition-delay: .36s; }

/* Button entrance + micro-interaction */
.btn-animate { opacity: 0; transform: translateY(10px) scale(.98); transition: opacity .5s var(--ease-out), transform .5s var(--ease-out); }
.btn-animate.inview { opacity: 1; transform: none; }
.btn-animate:where(button, a) { transition: transform .2s var(--ease-out), opacity .2s var(--ease-out); }
.btn-animate:hover { transform: translateY(-1px); }
.btn-animate:active { transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .aos, [data-stagger] > *, .btn-animate { transition: none !important; transform: none !important; opacity: 1 !important; }
}