/* XMSignal — dark premium theme
   Palette: #0a0a0f bg / #d4a853 gold / #16161f card / #e8e2d4 text
   Mobile-first; uses CSS logical properties so RTL mirrors automatically. */

*, *::before, *::after { box-sizing: border-box; }

:root {
  --bg:        #0a0a0f;
  --bg-2:      #11111a;
  --card:      #16161f;
  --card-2:    #1d1d28;
  --gold:      #d4a853;
  --gold-2:    #b88c3a;
  --text:      #e8e2d4;
  --text-mute: #9a9485;
  --line:      #2a2a36;
  --ok:        #5fb878;
  --max-w:     1200px;
  --radius:    14px;
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
    Arial, "Noto Sans", "Noto Sans Thai", "Noto Sans Arabic",
    "Noto Sans CJK SC", "Noto Sans CJK JP", "Noto Sans CJK KR",
    "Noto Sans Devanagari", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--gold); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }

/* ---------- NAV ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,10,15,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; gap: 16px; height: 64px; }
.logo {
  font-weight: 800; font-size: 22px; color: var(--gold);
  letter-spacing: 0.5px; white-space: nowrap;
}
.logo span { color: var(--text); }
.nav-links { display: none; gap: 22px; margin-inline-start: 8px; }
.nav-links a { color: var(--text-mute); font-size: 15px; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-spacer { flex: 1; }

.lang-switch { position: relative; }
.lang-btn {
  background: var(--card); color: var(--text); border: 1px solid var(--line);
  padding: 8px 12px; border-radius: 8px; cursor: pointer; font-size: 14px;
  display: inline-flex; align-items: center; gap: 6px;
}
.lang-btn:hover { border-color: var(--gold); }
.lang-menu {
  display: none; position: absolute; inset-inline-end: 0; top: 110%;
  background: var(--card); border: 1px solid var(--line);
  border-radius: 10px; padding: 8px; min-width: 200px;
  max-height: 70vh; overflow-y: auto; box-shadow: 0 12px 32px rgba(0,0,0,0.6);
  z-index: 200;
}
.lang-menu.open { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }
.lang-menu a {
  color: var(--text); padding: 8px 10px; border-radius: 6px; font-size: 14px;
  white-space: nowrap;
}
.lang-menu a:hover { background: var(--card-2); text-decoration: none; }

.cta-btn {
  background: var(--gold); color: #1a1208; font-weight: 700;
  padding: 9px 16px; border-radius: 8px; border: none; cursor: pointer;
  font-size: 14px; white-space: nowrap;
}
.cta-btn:hover { background: var(--gold-2); text-decoration: none; }

/* ---------- HERO ---------- */
.hero {
  position: relative; padding: 80px 0 60px;
  background: linear-gradient(180deg, #0a0a0f 0%, #11111a 100%);
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background-size: cover; background-position: center;
  opacity: 0.35;
}
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,10,15,0.7) 0%, rgba(10,10,15,0.95) 100%);
}
.hero-inner { position: relative; z-index: 1; text-align: center; }
.hero h1 {
  font-size: clamp(28px, 5vw, 48px); line-height: 1.2;
  margin: 0 0 16px; font-weight: 800;
}
.hero h1 .gold { color: var(--gold); }
.hero .subtext { font-size: 18px; color: var(--text-mute); margin-bottom: 28px; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn-primary {
  background: var(--gold); color: #1a1208; font-weight: 700;
  padding: 14px 28px; border-radius: 10px; border: none;
  font-size: 16px; cursor: pointer; display: inline-block;
}
.btn-primary:hover { background: var(--gold-2); text-decoration: none; }
.btn-secondary {
  background: transparent; color: var(--text); border: 1px solid var(--gold);
  padding: 14px 28px; border-radius: 10px; font-size: 16px;
  display: inline-block;
}
.btn-secondary:hover { background: rgba(212,168,83,0.12); text-decoration: none; }

/* ---------- STATS BAR ---------- */
.stats {
  background: var(--bg-2); border-block-start: 1px solid var(--line);
  border-block-end: 1px solid var(--line);
}
.stats-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 1px; background: var(--line);
}
.stat { background: var(--bg-2); padding: 28px 16px; text-align: center; }
.stat .num { font-size: clamp(24px, 4vw, 36px); color: var(--gold); font-weight: 800; }
.stat .label { font-size: 14px; color: var(--text-mute); margin-top: 4px; }

/* ---------- FEATURES ---------- */
.section { padding: 64px 0; }
.section-title {
  text-align: center; font-size: clamp(24px, 4vw, 34px);
  margin: 0 0 40px; font-weight: 800;
}
.section-title .gold { color: var(--gold); }

.feature-row { display: grid; grid-template-columns: 1fr; gap: 24px; align-items: center; }
.feature-img {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  aspect-ratio: 4/3; overflow: hidden; position: relative;
}
.feature-cards { display: grid; gap: 16px; }
.feature-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; transition: border-color 0.2s;
}
.feature-card:hover { border-color: var(--gold); }
.feature-card .ic {
  width: 44px; height: 44px; border-radius: 10px; background: rgba(212,168,83,0.12);
  display: grid; place-items: center; margin-block-end: 12px; color: var(--gold);
  font-size: 22px;
}
.feature-card h3 { margin: 0 0 6px; font-size: 18px; color: var(--text); }
.feature-card p  { margin: 0; color: var(--text-mute); font-size: 15px; }

/* ---------- APP SECTION ---------- */
.app-section { background: var(--bg-2); }
.app-row { display: grid; grid-template-columns: 1fr; gap: 32px; align-items: center; }
.app-img {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  aspect-ratio: 1/2; max-width: 280px; margin: 0 auto; overflow: hidden;
  position: relative;
}
.app-features { display: grid; gap: 10px; margin-block-end: 20px; }
.app-feature {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 10px 14px; background: var(--card); border-radius: 10px;
  border: 1px solid var(--line);
}
.app-feature .dot { color: var(--gold); font-weight: 700; flex-shrink: 0; }
.store-badges { display: flex; gap: 10px; flex-wrap: wrap; }
.store-badge {
  background: var(--card); border: 1px solid var(--line);
  padding: 10px 16px; border-radius: 10px; color: var(--text); font-size: 14px;
}
.store-badge:hover { border-color: var(--gold); text-decoration: none; }

/* ---------- PERFORMANCE ---------- */
.perf-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; margin-block-end: 24px; }
.perf-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; text-align: center;
}
.perf-card .num { font-size: 32px; color: var(--gold); font-weight: 800; }
.perf-card .lbl { color: var(--text-mute); font-size: 13px; margin-top: 4px; }
.disclaimer {
  font-size: 13px; color: var(--text-mute); text-align: center;
  padding: 14px 18px; background: var(--card); border-radius: 10px;
  border: 1px solid var(--line);
}

/* ---------- BOTTOM CTA ---------- */
.bottom-cta { text-align: center; padding: 72px 0; background: var(--bg-2); }
.bottom-cta h2 {
  font-size: clamp(24px, 4vw, 36px); margin: 0 0 24px; font-weight: 800;
}
.bottom-cta h2 .gold { color: var(--gold); }

/* ---------- FOOTER ---------- */
.footer {
  background: #06060a; border-block-start: 1px solid var(--line);
  padding: 40px 0 24px; font-size: 14px; color: var(--text-mute);
}
.footer-grid {
  display: grid; grid-template-columns: 1fr; gap: 24px; margin-block-end: 28px;
}
.footer h4 { color: var(--text); font-size: 15px; margin: 0 0 10px; }
.footer a { color: var(--text-mute); }
.footer a:hover { color: var(--gold); }
.footer-lang {
  display: grid; grid-template-columns: repeat(2,1fr); gap: 4px 16px;
}
.footer-disclosure {
  border-block-start: 1px solid var(--line); padding-block-start: 18px;
  font-size: 12px; line-height: 1.7;
}
.footer-copy { margin-top: 12px; color: #5a574d; font-size: 12px; }

/* ---------- IMAGE PLACEHOLDER (SVG inside) ---------- */
.ph {
  position: absolute; inset: 0; display: grid; place-items: center;
  background: linear-gradient(135deg, #16161f, #0a0a0f);
  color: var(--gold); font-size: 13px; letter-spacing: 1px;
  text-align: center; padding: 14px; opacity: 0.85;
}
.ph small { display: block; color: var(--text-mute); font-size: 11px; margin-top: 6px; }

/* ---------- RESPONSIVE ---------- */
@media (min-width: 640px) {
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
  .feature-row { grid-template-columns: 1fr 1fr; }
  .app-row { grid-template-columns: 1fr 1.3fr; }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
  .footer-lang { grid-template-columns: repeat(3,1fr); }
}
@media (min-width: 900px) {
  .nav-links { display: flex; }
  .lang-menu.open { grid-template-columns: 1fr 1fr; }
  .feature-cards { grid-template-columns: 1fr; }
  .perf-grid { grid-template-columns: repeat(4,1fr); }
}

/* ---------- RTL ---------- */
html[dir="rtl"] body { text-align: right; }
html[dir="rtl"] .nav-links { margin-inline-start: 8px; }
html[dir="rtl"] .lang-menu { inset-inline-end: 0; }

/* lazy-load fade-in */
.fade-in { opacity: 0; transition: opacity 0.6s; }
.fade-in.visible { opacity: 1; }