/* =========================================================================
   CaliCards — "Holographic Collector"
   A dark, obsidian gem-gallery for premium trading cards. Cards are rendered
   as holographic collectible visuals (no photos), with rarity-driven frames,
   foil sheen, gem badges, and a pointer-reactive 3D tilt.
   ========================================================================= */

:root {
  --bg: #0a0b12;
  --bg-2: #0c0e18;
  --surface: #12141f;
  --surface-alt: #191c2b;
  --text: #f2f3f8;
  --muted: #8a8fa6;
  --border: #262a3d;
  --border-soft: #1d2030;
  --accent: #6e7bff;      /* indigo */
  --accent-2: #36e0c9;    /* teal */
  --violet: #c9a6ff;
  --gold: #e8d8a8;
  --gold-deep: #c9a227;

  --radius: 16px;
  --radius-sm: 12px;
  --maxw: 1140px;
  --shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.7);
  --shadow-soft: 0 14px 40px -18px rgba(0, 0, 0, 0.65);

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(1100px 620px at 82% -8%, rgba(110, 123, 255, 0.14), transparent 60%),
    radial-gradient(900px 560px at -8% 12%, rgba(54, 224, 201, 0.10), transparent 58%),
    var(--bg);
  background-attachment: fixed;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
a { color: inherit; text-decoration: none; }
.muted { color: var(--muted); }
h1, h2, h3 { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; }

/* ---------- Demo banner ---------- */
.demo-banner {
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
  padding: 9px 18px;
}
.demo-banner code {
  color: var(--accent-2);
  background: rgba(54, 224, 201, 0.08);
  padding: 1px 6px;
  border-radius: 6px;
  font-size: 0.82em;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px) saturate(140%);
  background: rgba(10, 11, 18, 0.7);
  border-bottom: 1px solid var(--border-soft);
}
.header-inner { display: flex; align-items: center; gap: 22px; height: 68px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  border-radius: 9px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--bg);
  background: linear-gradient(150deg, var(--accent), var(--accent-2));
  box-shadow: 0 6px 18px -6px var(--accent);
}
.brand-name { font-family: var(--font-display); font-size: 1.18rem; letter-spacing: -0.01em; }
.nav { display: none; gap: 26px; margin-left: 10px; color: var(--muted); font-weight: 500; font-size: 0.95rem; }
.nav a { transition: color 0.15s ease; }
.nav a:hover { color: var(--text); }
.cart-toggle { margin-left: auto; display: flex; justify-content: flex-end; min-width: 40px; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: 84px 0 64px; }
.aura { position: absolute; border-radius: 50%; filter: blur(90px); pointer-events: none; }
.aura-1 { width: 520px; height: 520px; background: var(--accent); top: -180px; right: -60px; opacity: 0.20; }
.aura-2 { width: 460px; height: 460px; background: var(--accent-2); bottom: -220px; left: -120px; opacity: 0.14; }
.hero-grid-lines {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background-image: radial-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 30px 30px;
  mask: radial-gradient(120% 80% at 60% 20%, #000 30%, transparent 75%);
  -webkit-mask: radial-gradient(120% 80% at 60% 20%, #000 30%, transparent 75%);
}
.hero-inner { position: relative; display: grid; gap: 44px; align-items: center; }
.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-2);
  margin: 0 0 18px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(54, 224, 201, 0.05);
}
.hero h1 {
  font-size: clamp(2.6rem, 6.4vw, 4.6rem);
  line-height: 1.0;
  margin: 0 0 20px;
}
.hero h1 .ital {
  font-style: italic;
  font-weight: 500;
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub { font-size: clamp(1rem, 1.4vw, 1.18rem); color: var(--muted); margin: 0 0 30px; max-width: 30em; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 30px; }
.hero-trust { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; color: var(--muted); font-size: 0.92rem; }
.hero-trust li { display: flex; align-items: center; gap: 10px; }
.hero-trust .dot { width: 7px; height: 7px; border-radius: 50%; background: linear-gradient(150deg, var(--accent), var(--accent-2)); box-shadow: 0 0 10px var(--accent); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 24px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.96rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.12s ease, box-shadow 0.2s ease, opacity 0.2s ease, background 0.2s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: var(--bg);
  box-shadow: 0 14px 34px -12px var(--accent);
}
.btn-primary:hover { box-shadow: 0 18px 42px -10px var(--accent); transform: translateY(-2px); }
.btn-ghost { border-color: var(--border); color: var(--text); background: rgba(255, 255, 255, 0.02); }
.btn-ghost:hover { border-color: var(--accent); color: #fff; }

/* ---------- Section heads ---------- */
.shop, .about, .faq { padding: 72px 0; }
.section-head { margin-bottom: 36px; }
.kicker {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-2);
  margin: 0 0 10px;
}
.section-head h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); margin: 0 0 6px; }

/* ---------- Product grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 26px;
}
.loading { color: var(--muted); grid-column: 1 / -1; }
.loading code { color: var(--accent-2); }

/* =========================================================================
   The collectible card
   ========================================================================= */
.card {
  --r1: var(--accent);
  --r2: var(--accent-2);
  --mx: 0.5; --my: 0.5; --rx: 0deg; --ry: 0deg;
  display: flex;
  flex-direction: column;
  gap: 14px;
  height: 100%;
  perspective: 1000px;
  transition: transform 0.3s ease;
}
.card:hover { transform: translateY(-8px); }

/* rarity palettes */
.card[data-rarity="graded"], .card[data-rarity="psa-10"] { --r1: var(--gold); --r2: var(--gold-deep); }
.card[data-rarity="rare"]   { --r1: #93a0ff; --r2: var(--accent); }
.card[data-rarity="sealed"] { --r1: #6bead8; --r2: var(--accent-2); }
.card[data-rarity="promo"]  { --r1: #d8bbff; --r2: #9a6bff; }
.card[data-rarity="common"] { --r1: #9aa0b8; --r2: #5a607c; }

.card-frame {
  position: relative;
  aspect-ratio: 5 / 7;
  border-radius: var(--radius);
  padding: 11px;
  border: 1.5px solid transparent;
  background:
    linear-gradient(180deg, #14172260, #0d0f18d0) padding-box,
    linear-gradient(155deg, var(--r1), var(--r2)) border-box;
  transform: rotateX(var(--rx)) rotateY(var(--ry));
  transform-style: preserve-3d;
  transition: transform 0.35s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.3s ease;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.card.is-tilting .card-frame { transition: box-shadow 0.3s ease; }
.card:hover .card-frame {
  box-shadow: 0 30px 70px -22px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.04),
    0 18px 50px -26px var(--r2);
}

/* art window */
.card-art {
  position: relative;
  width: 100%; height: 100%;
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(120% 70% at 50% 0%, rgba(110, 123, 255, 0.16), transparent 60%),
    linear-gradient(180deg, #171a28, #0d0f18);
  z-index: 1;
}
.card-guilloche {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    repeating-radial-gradient(circle at 50% 44%, transparent 0 11px, rgba(255, 255, 255, 0.05) 11px 12px),
    repeating-conic-gradient(from 0deg at 50% 44%, rgba(255, 255, 255, 0.035) 0 1.5deg, transparent 1.5deg 6deg);
  mask: radial-gradient(125% 95% at 50% 42%, #000 52%, transparent 100%);
  -webkit-mask: radial-gradient(125% 95% at 50% 42%, #000 52%, transparent 100%);
}
.card-set {
  position: relative; z-index: 2;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.6rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 4px;
}
.card-sigil {
  position: relative; z-index: 2;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.8rem, 7vw, 3.6rem);
  line-height: 1;
  letter-spacing: -0.04em;
  background: linear-gradient(160deg, var(--r1), var(--r2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 4px 18px rgba(0, 0, 0, 0.4));
}
.card-wordmark {
  position: absolute; bottom: 12px; left: 0; right: 0;
  z-index: 2;
  text-align: center;
  font-family: var(--font-display);
  font-size: 0.56rem;
  letter-spacing: 0.32em;
  color: rgba(255, 255, 255, 0.22);
}

/* foil + glare overlays */
.card-foil {
  position: absolute; inset: 0; z-index: 3; pointer-events: none;
  border-radius: var(--radius);
  background: conic-gradient(from 200deg at 50% 50%, var(--accent), var(--accent-2), var(--violet), #ff8fd0, var(--accent));
  background-size: 200% 200%;
  background-position: calc(var(--mx) * 100%) calc(var(--my) * 100%);
  mix-blend-mode: screen;
  opacity: 0.10;
  transition: opacity 0.3s ease;
}
.card:hover .card-foil { opacity: 0.26; }
.card.is-tilting .card-foil { opacity: 0.32; }
.card[data-rarity="psa-10"] .card-foil,
.card[data-rarity="graded"] .card-foil {
  opacity: 0.16;
  animation: foilDrift 6.5s ease-in-out infinite;
}
.card[data-rarity="psa-10"]:hover .card-foil,
.card[data-rarity="graded"]:hover .card-foil { animation: none; }
@keyframes foilDrift {
  0%, 100% { background-position: 8% 50%; }
  50% { background-position: 92% 50%; }
}
.card-glare {
  position: absolute; inset: 0; z-index: 4; pointer-events: none;
  border-radius: var(--radius);
  background: radial-gradient(420px circle at calc(var(--mx) * 100%) calc(var(--my) * 100%),
    rgba(255, 255, 255, 0.4), rgba(255, 255, 255, 0) 42%);
  mix-blend-mode: screen;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.card:hover .card-glare { opacity: 0.55; }

/* gem rarity badge */
.card-gem {
  position: absolute; top: 14px; right: 14px; z-index: 5;
  font-family: var(--font-display);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--bg);
  padding: 5px 10px;
  border-radius: 7px;
  background: linear-gradient(150deg, var(--r1), var(--r2));
  box-shadow: 0 6px 18px -6px var(--r2), inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

/* museum-label info strip */
.card-info { display: flex; flex: 1; flex-direction: column; gap: 5px; padding: 0 2px; }
.card-title { font-size: 0.98rem; font-weight: 600; line-height: 1.25; letter-spacing: -0.01em; min-height: 2.5em; }
.card-stat { font-size: 0.8rem; color: var(--muted); margin: 0; }
.card-foot { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 8px; }
.card-price { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; color: var(--text); }
.btn-buy {
  padding: 8px 16px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.82rem;
  cursor: pointer;
  color: var(--bg);
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  border: none;
  transition: transform 0.12s ease, box-shadow 0.2s ease;
}
.btn-buy:hover { box-shadow: 0 10px 24px -8px var(--accent); transform: translateY(-1px); }
.btn-buy.is-demo { background: var(--surface-alt); color: var(--accent-2); box-shadow: none; }

/* ---------- Hero showcase card ---------- */
.hero-showcase { display: none; justify-content: center; }
.card.showcase {
  width: min(300px, 80%);
  animation: floaty 7s ease-in-out infinite;
}
.card.showcase .card-frame {
  transform: rotateX(6deg) rotateY(-14deg);
  box-shadow: 0 50px 90px -30px rgba(0, 0, 0, 0.85), 0 0 60px -20px var(--accent);
}
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

/* ---------- About ---------- */
.about-grid { display: grid; gap: 32px; }
.about-lede { font-size: 1.15rem; color: var(--text); max-width: 34em; margin: 0; }
.feature-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.feature-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 16px;
  row-gap: 3px;
  padding: 20px 22px;
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.feature-list li:hover { border-color: var(--border); transform: translateY(-3px); }
.feature-ic {
  grid-row: 1 / 3;
  display: grid; place-items: center;
  width: 44px; height: 44px;
  border-radius: 11px;
  font-size: 1.1rem;
  color: var(--accent-2);
  background: rgba(54, 224, 201, 0.08);
  border: 1px solid var(--border);
}
.feature-list strong { font-family: var(--font-display); font-weight: 600; font-size: 1rem; align-self: end; }
.feature-list span:last-child { color: var(--muted); font-size: 0.9rem; }

/* ---------- FAQ ---------- */
.faq-list { display: grid; gap: 12px; max-width: 760px; }
.faq details {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 18px 22px;
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  transition: border-color 0.2s ease;
}
.faq details[open] { border-color: var(--border); }
.faq summary {
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.02rem;
  list-style: none;
  display: flex; justify-content: space-between; align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent-2); font-size: 1.4rem; font-weight: 400; transition: transform 0.2s ease; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { color: var(--muted); margin: 12px 0 0; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border-soft); padding: 36px 0; margin-top: 24px; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; align-items: center; }
.footer-inner .brand-name { font-size: 1rem; }

/* ---------- Responsive ---------- */
@media (min-width: 720px) {
  .nav { display: flex; }
  .about-grid { grid-template-columns: 1fr 1.1fr; align-items: start; gap: 44px; }
}
@media (min-width: 900px) {
  .hero-inner { grid-template-columns: 1.15fr 0.85fr; }
  .hero-showcase { display: flex; }
}

@media (prefers-reduced-motion: reduce) {
  .card.showcase, .card[data-rarity] .card-foil { animation: none !important; }
  * { scroll-behavior: auto; }
}