:root {
  --cyan: #2ad4f0;
  --cyan-deep: #1298b0;
  --font: "Outfit", "Noto Sans SC", "Noto Naskh Arabic", system-ui, sans-serif;
  --display: "Fraunces", "Noto Serif SC", "Noto Naskh Arabic", Georgia, serif;
}

[data-theme="dark"] {
  --bg: #07080a;
  --bg-2: #0d1014;
  --ink: #f3f5f7;
  --muted: #8b93a0;
  --faint: #5c6470;
  --line: #1c232c;
  --card: #10151b;
  --cta-ink: #041016;
  --shadow: 0 20px 50px rgba(0,0,0,.45);
  --grain-op: .12;
}

[data-theme="light"] {
  --bg: #f4f0e8;
  --bg-2: #ebe6dc;
  --ink: #141414;
  --muted: #5c574e;
  --faint: #8a8478;
  --line: #ddd6c8;
  --card: #fbf8f2;
  --cta-ink: #041016;
  --shadow: 0 18px 40px rgba(40,30,10,.08);
  --grain-op: .07;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
html, body { min-height: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  transition: background .35s ease, color .35s ease;
}
body::before {
  content: "";
  pointer-events: none;
  position: fixed; inset: 0;
  z-index: 80;
  opacity: var(--grain-op);
  background-image: url("../assets/grain.png");
  background-size: 180px;
  mix-blend-mode: overlay;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

.wrap { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }

/* NAV */
.nav {
  position: sticky; top: 0; z-index: 40;
  backdrop-filter: blur(16px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand svg, .brand img { width: 34px; height: 34px; }
.wordmark {
  font-weight: 500; letter-spacing: .2em; font-size: 13px; text-transform: uppercase;
}
.wordmark span { color: var(--cyan-deep); }
[data-theme="dark"] .wordmark span { color: var(--cyan); }

.nav-tools { display: flex; align-items: center; gap: 8px; }
.nav-links { display: flex; gap: 20px; margin-right: 8px; }
.nav-links a { font-size: 13px; color: var(--muted); }
.nav-links a:hover { color: var(--ink); }

.icon-btn, .select {
  height: 36px; padding: 0 10px;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 999px;
  font-size: 12px;
  color: var(--ink);
}
.icon-btn { width: 36px; display: grid; place-items: center; }
.select { appearance: none; padding-right: 24px; background-image: none; }

.cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--cyan); color: var(--cta-ink);
  font-size: 12px; font-weight: 600; letter-spacing: .08em;
  text-transform: uppercase; padding: 11px 16px; border-radius: 999px;
}
.cta:hover { filter: brightness(1.05); }
.cta.ghost {
  background: transparent; color: var(--ink);
  border: 1px solid var(--line);
}

/* HERO */
.hero { padding: 64px 0 28px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.kicker { font-size: 11px; letter-spacing: .26em; text-transform: uppercase; color: var(--muted); margin-bottom: 18px; }
h1 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(42px, 6.4vw, 78px);
  line-height: .96;
  letter-spacing: -.03em;
}
h1 em { font-style: italic; color: var(--cyan-deep); }
[data-theme="dark"] h1 em { color: var(--cyan); }
.lead { margin-top: 22px; max-width: 460px; color: var(--muted); font-size: 17px; }
.hero-actions { display: flex; gap: 10px; margin-top: 32px; flex-wrap: wrap; }

.stage {
  position: relative; height: 460px;
  border: 1px solid var(--line);
  background: var(--card);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.stage .room {
  position: absolute; inset: 18px 18px 48px;
  perspective: 900px;
}
.stage .face {
  position: absolute;
  background-size: cover;
  background-position: center;
  transition: background-image .35s ease;
}
.stage .face.back {
  inset: 12% 18% 28% 18%;
  box-shadow: inset 0 0 40px rgba(0,0,0,.18);
}
.stage .face.left {
  left: 0; top: 8%; bottom: 10%; width: 22%;
  transform: perspective(800px) rotateY(42deg);
  transform-origin: right center;
  filter: brightness(.82);
}
.stage .face.right {
  right: 0; top: 8%; bottom: 10%; width: 22%;
  transform: perspective(800px) rotateY(-42deg);
  transform-origin: left center;
  filter: brightness(.9);
}
.stage .face.floor {
  left: 8%; right: 8%; bottom: 0; height: 28%;
  transform: perspective(800px) rotateX(58deg);
  transform-origin: center top;
  filter: brightness(.7);
}
.stage .caption {
  position: absolute; left: 16px; bottom: 14px;
  font-size: 11px; letter-spacing: .16em; text-transform: uppercase;
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  padding: 6px 10px;
}

.swatches { display: flex; gap: 8px; margin-top: 16px; flex-wrap: wrap; }
.swatch {
  width: 36px; height: 36px; border-radius: 50%;
  border: 2px solid var(--bg);
  outline: 1px solid var(--line);
  background-size: cover;
}
.swatch[aria-pressed="true"] { outline: 2px solid var(--cyan); }

.meta-row {
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 1px; background: var(--line);
  border: 1px solid var(--line);
  margin: 28px 0 8px;
}
.meta { background: var(--bg); padding: 20px 18px; }
.meta b { display: block; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 6px; }
.meta span { color: var(--muted); font-size: 13px; }

section { padding: 84px 0; }
.alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
h2 {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(30px, 4.5vw, 48px); line-height: 1.08; letter-spacing: -.02em;
}
h2 em { font-style: italic; color: var(--cyan-deep); }
[data-theme="dark"] h2 em { color: var(--cyan); }
.section-lead { max-width: 520px; margin-top: 14px; color: var(--muted); }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; }
.plist li {
  list-style: none; padding: 16px 0; border-top: 1px solid var(--line);
  display: grid; grid-template-columns: 120px 1fr; gap: 12px;
}
.plist strong { font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan-deep); }
[data-theme="dark"] .plist strong { color: var(--cyan); }
.plist p { color: var(--muted); font-size: 15px; }

.steps, .ops { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; margin-top: 40px; }
.step, .op {
  padding: 22px 20px; background: var(--card); border: 1px solid var(--line); min-height: 170px;
}
.n, .tag { color: var(--cyan-deep); font-size: 13px; letter-spacing: .16em; }
[data-theme="dark"] .n, [data-theme="dark"] .tag { color: var(--cyan); }
.step h3, .op h3 { margin: 14px 0 8px; font-size: 16px; }
.step p, .op p { color: var(--muted); font-size: 14px; }

.materials {
  display: grid; grid-template-columns: repeat(6,1fr); gap: 10px; margin-top: 36px;
}
.mat {
  height: 150px; background-size: cover; background-position: center;
  border: 1px solid var(--line); position: relative; overflow: hidden;
}
.mat span {
  position: absolute; left: 10px; bottom: 10px;
  font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  background: color-mix(in srgb, var(--bg) 75%, transparent); padding: 4px 8px;
}

.proof { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: end; }
.nums { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.nums b { display: block; font-family: var(--display); font-size: 40px; font-weight: 400; color: var(--cyan-deep); }
[data-theme="dark"] .nums b { color: var(--cyan); }
.nums span { font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }

.close { padding: 90px 0 70px; }
.close p { max-width: 520px; margin: 16px 0 28px; color: var(--muted); font-size: 17px; }

footer {
  border-top: 1px solid var(--line);
  padding: 22px 0 36px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 12px; color: var(--faint);
}
.foot-brand { display: flex; align-items: center; gap: 8px; }
.foot-brand svg { width: 22px; height: 22px; }

/* RTL */
[dir="rtl"] .split, [dir="rtl"] .proof, [dir="rtl"] .plist li { direction: rtl; }
[dir="rtl"] .hero-actions, [dir="rtl"] .nav-inner { direction: rtl; }
[dir="rtl"] .wordmark { letter-spacing: .12em; }

@media (max-width: 900px) {
  .hero, .split, .proof, .steps, .ops, .meta-row, .materials { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .stage { height: 320px; }
}
@media (max-width: 640px) {
  .hero, .materials, .steps, .ops, .meta-row { grid-template-columns: 1fr; }
  .plist li { grid-template-columns: 1fr; }
  h1 { font-size: 42px; }
}