:root {
  --gold: #f5b642;
  --gold-2: #d4941e;
  --gold-hi: #ffd77a;
  --bg: #0a0a0a;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  font-family: 'Vazirmatn', sans-serif;
  color: #f5f5f5;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--gold); color: #0a0a0a; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: #0a0a0a; }
::-webkit-scrollbar-thumb { background: #2a2a2a; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold-2); }

/* Gold utilities */
.gold-text {
  background: linear-gradient(135deg, var(--gold-hi), var(--gold), var(--gold-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.gold-btn {
  background: linear-gradient(135deg, var(--gold-hi), var(--gold));
  color: #0a0a0a;
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 30px rgba(245, 182, 66, 0.25);
  transition: transform .25s ease, box-shadow .25s ease, filter .25s ease;
}
.gold-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(245, 182, 66, 0.4); filter: brightness(1.05); }
.gold-btn:active { transform: translateY(0); }

/* Glass (limited) */
.glass {
  background: rgba(22, 22, 22, 0.6);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.nav-glass {
  background: rgba(12, 12, 12, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(245, 182, 66, 0.15);
}

/* Nav link underline */
.nav-link { position: relative; }
.nav-link::after {
  content: ''; position: absolute; right: 0; bottom: -6px; height: 2px; width: 0;
  background: var(--gold); transition: width .3s ease;
}
.nav-link:hover::after { width: 100%; }

/* Film grain overlay */
#grain {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  opacity: 0.06;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px 180px;
  animation: grain 0.6s steps(4) infinite;
}
@keyframes grain {
  0% { transform: translate(0,0); }
  25% { transform: translate(-3%, 2%); }
  50% { transform: translate(2%, -3%); }
  75% { transform: translate(-2%, -2%); }
  100% { transform: translate(3%, 3%); }
}

/* Hero */
.hero-img { animation: heroZoom 20s ease-in-out infinite alternate; }
@keyframes heroZoom { from { transform: scale(1.05); } to { transform: scale(1.15); } }

.hero-fade > * { opacity: 0; animation: fadeUp .9s ease forwards; }
.hero-fade > *:nth-child(1) { animation-delay: .1s; }
.hero-fade > *:nth-child(2) { animation-delay: .3s; }
.hero-fade > *:nth-child(3) { animation-delay: .5s; }
.hero-fade > *:nth-child(4) { animation-delay: .65s; }
.hero-fade > *:nth-child(5) { animation-delay: .8s; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

.scroll-cue { animation: bob 2s ease-in-out infinite; }
@keyframes bob { 0%,100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 8px); } }
.scroll-dot { animation: dotDrop 1.6s ease-in-out infinite; }
@keyframes dotDrop { 0%,100% { transform: translateY(0); opacity: 1; } 50% { transform: translateY(8px); opacity: .3; } }

/* Reveal */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity .8s ease, transform .8s ease; }
.reveal-in { opacity: 1; transform: translateY(0); }

/* Service cards */
.service-card { transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease; }
.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(245, 182, 66, 0.5);
  box-shadow: 0 20px 50px rgba(0,0,0,0.5), 0 0 0 1px rgba(245,182,66,0.1);
}
.service-icon { transition: transform .4s ease; }
.service-card:hover .service-icon { transform: scale(1.12) rotate(-4deg); }

/* Portfolio */
.portfolio-card { transition: transform .4s ease, box-shadow .4s ease; }
.portfolio-card:hover { transform: translateY(-6px); box-shadow: 0 24px 60px rgba(0,0,0,0.6); }
.portfolio-img { transition: transform .6s ease, filter .4s ease; filter: grayscale(0.25); }
.portfolio-card:hover .portfolio-img { transform: scale(1.08); filter: grayscale(0); }
.play-badge {
  background: linear-gradient(135deg, var(--gold-hi), var(--gold));
  opacity: 0; transform: scale(0.7);
  transition: opacity .35s ease, transform .35s ease;
  box-shadow: 0 8px 30px rgba(245,182,66,0.4);
}
.portfolio-card:hover .play-badge { opacity: 1; transform: scale(1); }

/* Studio tiles */
.studio-tile img { transition: transform .6s ease; filter: grayscale(0.15); }
.studio-tile:hover img { transform: scale(1.06); filter: grayscale(0); }

/* Contact items */
.contact-item { transition: transform .3s ease, border-color .3s ease; }
.contact-item:hover { transform: translateX(-6px); border-color: rgba(245,182,66,0.4); }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
  .hero-fade > * { opacity: 1; animation: none; }
  #grain { animation: none; }
}