/* ---------- Themes ---------- */
:root,
[data-theme="light"] {
  --bg-0: #FFFDF7;
  --bg-1: #F7F0E0;
  --surface: #FFFFFF;
  --surface-2: #FFFAF0;
  --border: rgba(11, 46, 38, 0.12);
  --border-strong: rgba(11, 46, 38, 0.28);
  --gold: #A88339;
  --gold-soft: #BC9550;
  --gold-glow: rgba(168, 131, 57, 0.18);
  --text: #1A2331;
  --muted: #5A6678;
  --warning-bg: rgba(168, 131, 57, 0.10);
  --device-bg-1: #FFFFFF;
  --device-bg-2: #FAF5E7;
  --device-bar-bg: rgba(0, 0, 0, 0.04);
  --device-pill-bg: rgba(0, 0, 0, 0.04);
  --hero-glow-1: rgba(168, 131, 57, 0.10);
  --hero-glow-2: rgba(168, 131, 57, 0.05);
  --star-opacity: 0.05;
  --primary-text: #1A1207;
  --shadow: 0 30px 80px -28px rgba(11, 46, 38, 0.25);
  --nav-bg: rgba(255, 253, 247, 0.72);
  --nav-bg-scrolled: rgba(255, 253, 247, 0.94);
  --code-bg: rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] {
  --bg-0: #24283A;
  --bg-1: #303143;
  --surface: #363747;
  --surface-2: #404151;
  --border: rgba(201, 168, 107, 0.15);
  --border-strong: rgba(201, 168, 107, 0.32);
  --gold: #C9A86B;
  --gold-soft: #E0C58A;
  --gold-glow: rgba(201, 168, 107, 0.18);
  --text: #F5F1E8;
  --muted: #C7C0B2;
  --warning-bg: rgba(201, 168, 107, 0.08);
  --device-bg-1: #3A3C4C;
  --device-bg-2: #2C2F40;
  --device-bar-bg: rgba(255, 255, 255, 0.06);
  --device-pill-bg: rgba(255, 255, 255, 0.08);
  --hero-glow-1: rgba(201, 168, 107, 0.13);
  --hero-glow-2: rgba(201, 168, 107, 0.07);
  --star-opacity: 0.07;
  --primary-text: #1A1207;
  --shadow: 0 30px 80px -24px rgba(0, 0, 0, 0.42);
  --nav-bg: rgba(36, 40, 58, 0.66);
  --nav-bg-scrolled: rgba(36, 40, 58, 0.9);
  --code-bg: rgba(255, 255, 255, 0.08);
}

/* ---------- Base ---------- */
:root {
  --max-w: 1100px;
  --radius: 14px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-0);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background 280ms ease, color 280ms ease;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, var(--hero-glow-1), transparent 60%),
    radial-gradient(ellipse 60% 40% at 50% 100%, var(--hero-glow-2), transparent 70%),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 100%);
  overflow-x: hidden;
}

a { color: var(--gold); text-decoration: none; }
a:hover { color: var(--gold-soft); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 6px;
}

img { max-width: 100%; display: block; }

h1, h2, h3 {
  font-family: 'Amiri', 'Cormorant Garamond', Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 0.4em;
  color: var(--text);
}
h1 { font-size: clamp(2.4rem, 5.6vw, 4rem); line-height: 1.1; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); line-height: 1.2; }
h3 { font-size: 1.15rem; font-family: 'Inter', sans-serif; font-weight: 600; letter-spacing: 0; }

p { margin: 0 0 1em; color: var(--muted); }

.muted { color: var(--muted); }
.small { font-size: 0.85rem; }

/* ---------- Decorative star watermark ---------- */
.star-watermark {
  position: absolute;
  top: 60px;
  left: 50%;
  transform: translateX(-50%);
  width: min(900px, 110vw);
  height: auto;
  color: var(--gold);
  opacity: var(--star-opacity);
  pointer-events: none;
  z-index: 0;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: var(--nav-bg);
  border-bottom: 1px solid transparent;
  transition: background 200ms ease, border-color 200ms ease;
}
.nav.is-scrolled {
  background: var(--nav-bg-scrolled);
  border-bottom-color: var(--border);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
}
.brand img { border-radius: 6px; }
.brand-name { font-family: 'Amiri', serif; font-size: 1.05rem; letter-spacing: 0.02em; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 0.92rem;
}
.nav-links a:not(.nav-cta) { color: var(--muted); }
.nav-links a:not(.nav-cta):hover { color: var(--text); }
.nav-cta {
  color: var(--text) !important;
  border: 1px solid var(--border);
  padding: 7px 14px;
  border-radius: 999px;
  transition: border-color 180ms ease, background 180ms ease;
}
.nav-cta:hover { border-color: var(--border-strong); background: var(--gold-glow); }

.theme-toggle {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  width: 36px;
  height: 36px;
  display: inline-grid;
  place-items: center;
  color: var(--text);
  cursor: pointer;
  transition: border-color 180ms ease, background 180ms ease, color 180ms ease;
  padding: 0;
}
.theme-toggle:hover { border-color: var(--border-strong); background: var(--gold-glow); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

@media (max-width: 640px) {
  .nav-links a:not(.nav-cta) { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: clamp(56px, 10vw, 110px) 24px 60px;
  text-align: center;
  z-index: 1;
}
.hero-inner { max-width: 760px; margin: 0 auto; }
.hero-logo {
  margin: 0 auto 22px;
  border-radius: 18px;
  box-shadow: 0 10px 40px -10px var(--gold-glow);
}
.eyebrow {
  font-family: 'Amiri', serif;
  text-transform: uppercase;
  letter-spacing: 0.32em;
  color: var(--gold);
  font-size: 0.78rem;
  margin: 0 0 12px;
}
.hero h1 { margin-bottom: 18px; }
.lede {
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  color: var(--muted);
  max-width: 580px;
  margin: 0 auto 36px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 14px;
}
.cta-meta { font-size: 0.82rem; color: var(--muted); margin: 6px 0 28px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 120ms ease, background 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(180deg, var(--gold-soft) 0%, var(--gold) 100%);
  color: var(--primary-text);
  box-shadow: 0 8px 28px -10px var(--gold-glow), inset 0 1px 0 rgba(255,255,255,0.25);
}
.btn-primary:hover { transform: translateY(-1px); color: var(--primary-text); }
.btn-android {
  background: #0F7A53;
  color: #FFFFFF;
  box-shadow: 0 8px 28px -12px rgba(15, 122, 83, 0.42);
}
.btn-android:hover {
  transform: translateY(-1px);
  color: #FFFFFF;
  background: #0B5F41;
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--border-strong); background: var(--gold-glow); color: var(--text); }

.warning {
  margin: 8px auto 0;
  max-width: 580px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--warning-bg);
  color: var(--text);
  font-size: 0.88rem;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  text-align: left;
}
.warning strong { color: var(--gold); font-weight: 600; }
.warning em {
  font-style: normal;
  color: var(--text);
  background: var(--code-bg);
  padding: 1px 6px;
  border-radius: 4px;
}
.warning-close {
  background: transparent;
  border: 0;
  color: var(--muted);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
  margin-left: auto;
}
.warning-close:hover { color: var(--text); }
.warning.is-hidden { display: none; }

/* ---------- Dotted arch divider ---------- */
.dotted-arch {
  border: 0;
  height: 24px;
  margin: 40px auto;
  max-width: 280px;
  background-image: radial-gradient(circle, var(--gold) 1px, transparent 1.5px);
  background-size: 12px 12px;
  background-repeat: repeat-x;
  background-position: center;
  opacity: 0.5;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 30%, #000 70%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 30%, #000 70%, transparent);
}

/* ---------- Sections ---------- */
.section {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 60px 24px;
}
.section-head {
  text-align: center;
  margin: 0 auto 44px;
  max-width: 620px;
}
.section-head h2 { margin-bottom: 12px; }

/* ---------- Features ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}
.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 22px;
  transition: border-color 200ms ease, transform 200ms ease, background 200ms ease;
}
.feature:hover {
  border-color: var(--border-strong);
  background: var(--surface-2);
  transform: translateY(-2px);
}
.feature-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--gold-glow);
  color: var(--gold);
  margin-bottom: 16px;
}
.feature-icon svg { width: 22px; height: 22px; }
.feature h3 { color: var(--text); margin-bottom: 6px; }
.feature p { font-size: 0.93rem; margin: 0; }

/* ---------- Preview / device ---------- */
.preview { padding-top: 30px; }
.device { position: relative; max-width: 760px; margin: 0 auto; }
.device-glow {
  position: absolute;
  inset: -40px;
  background: radial-gradient(ellipse 60% 60% at 50% 50%, var(--gold-glow), transparent 70%);
  filter: blur(20px);
  z-index: 0;
}
.device-frame {
  position: relative;
  z-index: 1;
  background: linear-gradient(180deg, var(--device-bg-1) 0%, var(--device-bg-2) 100%);
  border: 1px solid var(--border-strong);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.device-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--device-bar-bg);
  border-bottom: 1px solid var(--border);
  position: relative;
}
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.dot-r { background: #E5645A; }
.dot-y { background: #E2B048; }
.dot-g { background: #6BBE6B; }
.device-title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.device-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding: 28px 28px 32px;
}
.device-left .next-label {
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.72rem;
  color: var(--gold);
  margin: 18px 0 4px;
}
.device-left .next-name {
  font-family: 'Amiri', serif;
  font-size: 1.6rem;
  color: var(--text);
  margin: 0 0 4px;
}
.device-left .next-count {
  font-size: 1.7rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  color: var(--gold);
  margin: 0 0 18px;
}
.device-play {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 0.82rem;
  cursor: default;
}
.device-list {
  list-style: none;
  margin: 0;
  padding: 0;
  align-self: center;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.device-list li {
  display: flex;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.92rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  border: 1px solid transparent;
}
.device-list li.active {
  background: var(--gold-glow);
  color: var(--text);
  border-color: var(--border);
}
.device-list li.active span:first-child { color: var(--gold); }
@media (max-width: 560px) {
  .device-body { grid-template-columns: 1fr; gap: 12px; padding: 22px; }
}
.device-caption {
  text-align: center;
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 18px;
}

/* ---------- Contribute ---------- */
.contribute { padding-top: 30px; }
.contrib-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  margin-top: 60px;
  padding: 28px 24px;
  text-align: center;
}
.footer-inner { max-width: var(--max-w); margin: 0 auto; }
.footer p { margin: 0 0 4px; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  .btn-primary:hover, .feature:hover { transform: none; }
}