/* Open Sesame — landing page design system
   Dark heist theme (#101c2c), brass accents, glassmorphism cards.
   Mobile-first: 375px → 1440px. */

:root {
  --bg: #101c2c;
  --bg-deep: #0b1420;
  --brass: #e8b64c;
  --brass-hi: #ffd97a;
  --brass-dim: #a87f2e;
  --ink: #eaf1f8;
  --ink-dim: #9fb2c5;
  --red: #e5484d;
  --glass: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.12);
  --radius: 18px;
  --maxw: 1080px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(232, 182, 76, 0.12), transparent 60%),
    radial-gradient(900px 500px at 90% 110%, rgba(229, 72, 77, 0.08), transparent 60%),
    var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

.glass {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  background: linear-gradient(180deg, var(--brass-hi), var(--brass) 55%, var(--brass-dim));
  color: #241a05;
  font-weight: 800;
  text-decoration: none;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow: 0 6px 18px rgba(232, 182, 76, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.5);
  transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.12s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px) scale(1.02); filter: brightness(1.06); }
.btn:active { transform: translateY(1px) scale(0.99); }
.btn-big { font-size: 1.15rem; padding: 0.9em 1.9em; }
.btn-small { font-size: 0.9rem; padding: 0.45em 1.1em; }
.btn-outline {
  background: transparent;
  color: var(--brass-hi);
  border: 2px solid var(--brass-dim);
  box-shadow: none;
}
.btn-outline:hover { border-color: var(--brass-hi); }

/* ---------- nav ---------- */
.nav {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: var(--maxw);
  margin: 16px auto 0;
  padding: 8px 14px;
  width: calc(100% - 24px);
  position: sticky;
  top: 12px;
  z-index: 10;
}
.nav-icon { border-radius: 10px; }
.nav-title { font-weight: 800; letter-spacing: 0.04em; font-size: 1.05rem; flex: 1; }

/* ---------- hero ---------- */
.hero { padding: 0 12px 24px; }
.hero-inner {
  max-width: var(--maxw);
  margin: 28px auto 8px;
  display: grid;
  gap: 24px;
  align-items: center;
}
.hero-graphic {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}
.hero-copy { text-align: center; }
.hero-icon {
  margin: 0 auto 10px;
  border-radius: 22px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
}
h1 {
  font-size: clamp(2.2rem, 7vw, 3.6rem);
  letter-spacing: 0.02em;
  background: linear-gradient(180deg, var(--brass-hi), var(--brass));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 2px 24px rgba(232, 182, 76, 0.25);
}
.tagline {
  color: var(--ink-dim);
  font-size: clamp(1rem, 3.4vw, 1.25rem);
  max-width: 46ch;
  margin: 10px auto 20px;
}
.cta-row { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.cta-row.center { margin-top: 26px; }
.microcopy { margin-top: 14px; color: var(--ink-dim); font-size: 0.85rem; letter-spacing: 0.03em; }

/* ---------- sections ---------- */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 40px 20px 8px;
  width: 100%;
}
h2 {
  font-size: clamp(1.5rem, 5vw, 2.1rem);
  margin-bottom: 20px;
  text-align: center;
  letter-spacing: 0.02em;
}
h2::after {
  content: "";
  display: block;
  width: 64px;
  height: 3px;
  margin: 10px auto 0;
  border-radius: 3px;
  background: linear-gradient(90deg, transparent, var(--brass), transparent);
}

/* ---------- cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.card { padding: 20px; }
.card-emoji { font-size: 1.9rem; margin-bottom: 8px; }
.card h3 { margin-bottom: 6px; color: var(--brass-hi); font-size: 1.1rem; }
.card p { color: var(--ink-dim); font-size: 0.97rem; }
.card p strong, .card p em { color: var(--ink); }

/* ---------- carousel ---------- */
.carousel {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding: 6px 4px 18px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-color: var(--brass-dim) transparent;
}
.carousel img {
  flex: 0 0 min(72vw, 300px);
  scroll-snap-align: center;
  border-radius: 14px;
  border: 1px solid var(--glass-border);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
}
.carousel::-webkit-scrollbar { height: 8px; }
.carousel::-webkit-scrollbar-thumb { background: var(--brass-dim); border-radius: 8px; }
.carousel::-webkit-scrollbar-track { background: rgba(255, 255, 255, 0.05); }

/* ---------- why list ---------- */
.why-list {
  list-style: none;
  padding: 22px 26px;
  display: grid;
  gap: 12px;
  max-width: 720px;
  margin: 0 auto;
}
.why-list li { color: var(--ink-dim); padding-left: 26px; position: relative; }
.why-list li::before { content: "🔩"; position: absolute; left: 0; top: 0; }
.why-list li strong { color: var(--ink); }

/* ---------- footer ---------- */
.footer {
  margin-top: auto;
  padding: 36px 20px 28px;
  text-align: center;
  color: var(--ink-dim);
  font-size: 0.88rem;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  background: var(--bg-deep);
}
.footer-links { display: flex; justify-content: center; gap: 22px; flex-wrap: wrap; margin-bottom: 10px; }
.footer a { color: var(--brass); text-decoration: none; }
.footer a:hover { text-decoration: underline; }

/* ---------- privacy page ---------- */
.policy {
  max-width: 760px;
  margin: 0 auto;
  padding: 30px 20px 50px;
  width: 100%;
}
.policy h1 {
  font-size: clamp(1.8rem, 6vw, 2.6rem);
  margin: 18px 0 4px;
}
.policy h2 {
  text-align: left;
  font-size: 1.25rem;
  margin: 30px 0 10px;
}
.policy h2::after { margin: 8px 0 0; background: linear-gradient(90deg, var(--brass), transparent); }
.policy p, .policy li { color: var(--ink-dim); margin-bottom: 10px; }
.policy ul { padding-left: 22px; }
.policy strong { color: var(--ink); }
.policy a { color: var(--brass); }
.policy .backlink { display: inline-block; margin-top: 22px; color: var(--brass); text-decoration: none; }
.policy .backlink:hover { text-decoration: underline; }
.policy-meta { color: var(--ink-dim); font-size: 0.9rem; }

/* ---------- responsive up ---------- */
@media (min-width: 640px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .hero-inner { grid-template-columns: 1.15fr 1fr; gap: 40px; }
  .hero-copy { text-align: left; }
  .hero-icon { margin: 0 0 14px; }
  .tagline { margin: 12px 0 24px; }
  .cta-row { justify-content: flex-start; }
  .cta-row.center { justify-content: center; }
  .card-grid { grid-template-columns: repeat(4, 1fr); }
  #how-to-play .card-grid { grid-template-columns: repeat(4, 1fr); }
}
@media (min-width: 1440px) {
  .hero-inner, .section { max-width: 1200px; }
}