/* ════════════════════════════════════════════
   稳住 WENZHU — spherical gallery promo site
   deep-navy immersive dark · glass · coral accent
   ════════════════════════════════════════════ */

:root {
  --bg: #06080d;
  --bg-2: #0a0e16;
  --ink: #e9edf4;
  --ink-dim: #8b94a3;
  --ink-faint: #565f6e;
  --coral: #ff8a7a;
  --coral-deep: #d95d59;
  --amber: #f0b85a;
  --blue: #8fb6e8;
  --teal: #6dd0c8;
  --glass: rgba(16, 21, 32, 0.55);
  --glass-edge: rgba(233, 237, 244, 0.08);
  --cursor-ring: rgba(233, 237, 244, 0.4);
  --mono: "Fragment Mono", "PingFang SC", monospace;
  --sans: "Schibsted Grotesk", "PingFang SC", "Noto Sans SC", sans-serif;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ── light theme: warm paper, soft layers, coral accent ── */
:root[data-theme="light"] {
  --bg: #f1ece4;          /* warm paper, never pure white */
  --bg-2: #e8e1d4;        /* recessed / detail backdrop */
  --ink: #221f1a;         /* warm near-black */
  --ink-dim: #6f665a;     /* warm grey */
  --ink-faint: #a99f8e;
  --coral: #d2554f;       /* deeper coral reads on cream */
  --coral-deep: #b8463f;
  --glass: rgba(251, 247, 240, 0.68);
  --glass-edge: rgba(34, 31, 26, 0.10);
  --cursor-ring: rgba(34, 31, 26, 0.34);
}

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

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

.mono { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; }

button { background: none; border: none; color: inherit; font: inherit; cursor: pointer; }

::selection { background: var(--coral-deep); color: #fff; }

/* ── 3D stage ─────────────────────────────── */
#stage {
  position: fixed; inset: 0; width: 100%; height: 100%;
  display: block; touch-action: none; cursor: grab;
}
#stage.dragging { cursor: grabbing; }

#vignette {
  position: fixed; inset: 0; pointer-events: none; z-index: 2;
  background:
    radial-gradient(120% 90% at 50% 50%, transparent 55%, rgba(3, 5, 9, 0.55) 86%, rgba(2, 3, 6, 0.9) 100%),
    linear-gradient(180deg, rgba(4, 6, 10, 0.55) 0%, transparent 18%, transparent 82%, rgba(4, 6, 10, 0.6) 100%);
}

#grain { position: fixed; inset: -100px; pointer-events: none; z-index: 3; opacity: 0.05; }
#grain::before {
  content: ""; position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain-shift 0.9s steps(2) infinite;
}
@keyframes grain-shift { 50% { transform: translate(18px, -26px); } }

/* ── loader ───────────────────────────────── */
#loader {
  position: fixed; inset: 0; z-index: 60;
  background: radial-gradient(90% 90% at 50% 42%, #0b1120 0%, #06080d 70%);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 22px;
}
.loader-orb {
  width: 88px; height: 88px; border-radius: 50%;
  background: radial-gradient(circle at 38% 32%, rgba(255, 200, 186, 0.95), rgba(255, 138, 122, 0.55) 38%, rgba(217, 93, 89, 0.12) 68%, transparent 75%);
  filter: blur(1px);
  animation: breathe 3.2s ease-in-out infinite;
}
@keyframes breathe {
  0%, 100% { transform: scale(0.82); opacity: 0.75; }
  50% { transform: scale(1.08); opacity: 1; }
}
.loader-num { font-size: 13px; color: var(--ink); }
.loader-label { color: var(--ink-faint); }

/* ── top chrome ───────────────────────────── */
#chrome-top {
  position: fixed; top: 0; left: 0; right: 0; z-index: 10;
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: clamp(16px, 2.4vw, 30px) clamp(16px, 2.6vw, 34px);
  pointer-events: none;
}
#chrome-top > * { pointer-events: auto; }

.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand-orb {
  width: 26px; height: 26px; border-radius: 50%;
  background: radial-gradient(circle at 36% 30%, #ffd2c6, var(--coral) 45%, rgba(217, 93, 89, 0.25) 80%, transparent);
  box-shadow: 0 0 22px rgba(255, 138, 122, 0.45);
  animation: breathe 4s ease-in-out infinite;
}
.brand-name { font-size: 21px; font-weight: 700; letter-spacing: 0.06em; }
.brand-sub { color: var(--ink-faint); margin-top: 5px; }

.blurb {
  color: var(--ink-dim); text-align: left; line-height: 1.8;
  max-width: 330px; margin-top: 4px;
}
.blurb em, .modal-title em, .modal-text em {
  color: var(--coral); font-style: normal;
}

.top-right { display: flex; align-items: flex-start; gap: 22px; }
.clocks { display: flex; flex-direction: column; gap: 5px; color: var(--ink-dim); text-align: right; margin-top: 4px; }
.clock-row { display: inline-flex; align-items: center; gap: 7px; justify-content: flex-end; }
.clock-row.dim { color: var(--ink-faint); }
.clocks .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 8px var(--coral); display: inline-block; }

.cta-pill {
  background: var(--ink); color: var(--bg);
  font-weight: 700; font-size: 14px; letter-spacing: 0.02em;
  padding: 13px 24px; border-radius: 999px;
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out), background 0.35s;
}
.cta-pill:hover { transform: scale(1.05); box-shadow: 0 6px 30px rgba(255, 138, 122, 0.4); }
.cta-pill.big { padding: 16px 32px; font-size: 15px; }
.cta-pill.appstore { display: inline-flex; align-items: baseline; gap: 10px; }
.cta-pill .soon { font-size: 10px; color: var(--coral-deep); }

/* ── bottom chrome ────────────────────────── */
#chrome-bottom {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 10;
  display: flex; align-items: flex-end; justify-content: space-between;
  padding: clamp(14px, 2.2vw, 26px) clamp(16px, 2.6vw, 34px);
  pointer-events: none;
}
#chrome-bottom > * { pointer-events: auto; }

.sound { color: var(--ink-dim); display: inline-flex; align-items: center; gap: 9px; padding: 8px 0; transition: color 0.3s; }
.sound:hover { color: var(--ink); }
.sound-bars { display: inline-flex; align-items: flex-end; gap: 2px; height: 11px; }
.sound-bars i { width: 2px; height: 4px; background: currentColor; transition: height 0.3s; }
.sound.on .sound-bars i { animation: bar-bounce 0.9s ease-in-out infinite alternate; }
.sound.on .sound-bars i:nth-child(2) { animation-delay: 0.15s; }
.sound.on .sound-bars i:nth-child(3) { animation-delay: 0.3s; }
@keyframes bar-bounce { from { height: 3px; } to { height: 11px; } }

.pill-nav {
  display: flex; gap: 4px; padding: 5px;
  background: var(--glass); border: 1px solid var(--glass-edge); border-radius: 999px;
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
}
.pill-item {
  padding: 11px 22px; border-radius: 999px; font-size: 14px; font-weight: 600;
  color: var(--ink-dim); transition: color 0.3s, background 0.3s;
  white-space: nowrap;
}
.pill-item:hover { color: var(--ink); }
.pill-item.active { background: var(--ink); color: var(--bg); }

.bottom-right { display: flex; align-items: center; gap: 10px; }

.lang-pill {
  padding: 12px 18px; border-radius: 999px;
  background: var(--glass); border: 1px solid var(--glass-edge);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  color: var(--ink-faint); display: inline-flex; gap: 7px; font-size: 12px;
  transition: border-color 0.3s;
}
.lang-pill:hover { border-color: var(--ink-faint); }
.lang-pill .on { color: var(--ink); }
.lang-divider { opacity: 0.4; }

/* theme toggle (sun / moon) */
.theme-btn {
  position: relative; width: 42px; height: 42px; border-radius: 999px;
  background: var(--glass); border: 1px solid var(--glass-edge);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  color: var(--ink-dim);
  display: inline-flex; align-items: center; justify-content: center;
  transition: border-color 0.3s, color 0.3s, transform 0.3s var(--ease-out);
}
.theme-btn:hover { color: var(--ink); border-color: var(--ink-faint); transform: scale(1.06); }
.theme-ico {
  position: absolute; display: inline-flex; align-items: center; justify-content: center;
  transition: opacity 0.35s, transform 0.5s var(--ease-out);
}
.theme-moon { opacity: 1; transform: rotate(0deg); }
.theme-sun { opacity: 0; transform: rotate(-90deg) scale(0.6); }
.theme-btn.is-light .theme-moon { opacity: 0; transform: rotate(90deg) scale(0.6); }
.theme-btn.is-light .theme-sun { opacity: 1; transform: rotate(0deg) scale(1); }

/* ── drag hint ────────────────────────────── */
#drag-hint {
  position: fixed; left: 50%; bottom: 96px; transform: translateX(-50%);
  z-index: 9; color: var(--ink-dim); display: flex; align-items: center; gap: 10px;
  pointer-events: none; opacity: 0;
}
#drag-hint .hint-icon { letter-spacing: 0; animation: hint-slide 2.4s ease-in-out infinite; display: inline-block; }
@keyframes hint-slide { 0%, 100% { transform: translateX(-7px); } 50% { transform: translateX(7px); } }

/* ── custom cursor ────────────────────────── */
#cursor { position: fixed; left: 0; top: 0; z-index: 80; pointer-events: none; opacity: 0; }
.cursor-dot {
  position: absolute; width: 6px; height: 6px; border-radius: 50%;
  background: var(--ink); transform: translate(-50%, -50%);
}
.cursor-ring {
  position: absolute; width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--cursor-ring); transform: translate(-50%, -50%) scale(0.55);
  transition: transform 0.3s var(--ease-out), border-color 0.3s, background 0.3s;
}
.cursor-label {
  position: absolute; transform: translate(-50%, -50%); color: #0a0d13;
  font-weight: 700; opacity: 0; transition: opacity 0.25s; font-size: 10px;
}
#cursor.hover .cursor-ring {
  transform: translate(-50%, -50%) scale(1.9);
  background: rgba(255, 138, 122, 0.92); border-color: transparent;
}
#cursor.hover .cursor-dot { opacity: 0; }
#cursor.hover .cursor-label { opacity: 1; transition-delay: 0.1s; }
#cursor.down .cursor-ring { transform: translate(-50%, -50%) scale(0.8); }
@media (hover: none) { #cursor { display: none; } }
@media (hover: hover) { #stage, .pill-item, .cta-pill, button { cursor: none; } }

/* ── detail view ──────────────────────────── */
#detail {
  position: fixed; inset: 0; z-index: 40;
  visibility: hidden; pointer-events: none;
}
#detail.open { visibility: visible; pointer-events: auto; }
.detail-bg { position: absolute; inset: 0; background: var(--bg-2); opacity: 0; }
.detail-glow {
  position: absolute; inset: -20%; opacity: 0; pointer-events: none;
  background: radial-gradient(50% 42% at 50% 12%, var(--glow, rgba(255, 138, 122, 0.16)), transparent 70%);
}
.detail-top {
  position: absolute; top: 0; left: 0; right: 0; z-index: 4;
  display: flex; justify-content: space-between; align-items: center;
  padding: clamp(16px, 2.4vw, 30px) clamp(16px, 2.6vw, 34px);
}
.back { color: var(--ink-dim); padding: 10px 0; transition: color 0.3s; font-size: 12px; }
.back:hover { color: var(--ink); }
.detail-index { color: var(--ink-faint); }

.detail-scroll {
  position: absolute; inset: 0; overflow-y: auto; overscroll-behavior: contain;
  padding: clamp(72px, 9vh, 110px) clamp(20px, 5vw, 72px) 60px;
  display: flex; flex-direction: column; align-items: center;
}
.detail-hero {
  width: min(860px, 100%); height: min(58vh, 620px);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; opacity: 0;
}
.detail-hero img {
  max-width: 100%; max-height: 100%; display: block;
  filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.55));
}

.detail-body { width: min(860px, 100%); padding-top: 38px; }
.detail-meta {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  color: var(--ink-dim); margin-bottom: 22px;
}
.detail-chips { display: inline-flex; gap: 8px; }
.detail-chips span {
  border: 1px solid var(--glass-edge); border-radius: 7px; padding: 5px 10px;
  background: rgba(233, 237, 244, 0.04);
}
.detail-year { margin-left: auto; color: var(--ink-faint); }
.detail-title {
  font-size: clamp(38px, 7vw, 76px); font-weight: 800; letter-spacing: -0.01em;
  line-height: 1.06; margin-bottom: 14px;
}
.detail-sub { color: var(--accent, var(--coral)); margin-bottom: 30px; font-size: 12px; }
.detail-desc {
  font-size: clamp(17px, 2vw, 21px); line-height: 1.85; color: var(--ink-dim);
  max-width: 640px; margin-bottom: 44px;
}
.detail-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; padding-bottom: 40px; }
.ghost-pill {
  padding: 15px 28px; border-radius: 999px; border: 1px solid var(--glass-edge);
  color: var(--ink-dim); transition: color 0.3s, border-color 0.3s;
}
.ghost-pill:hover { color: var(--ink); border-color: rgba(233, 237, 244, 0.3); }

/* body of detail animates in */
.detail-body > * { opacity: 0; transform: translateY(26px); }

/* ── flip clone ───────────────────────────── */
#flip-clone {
  position: fixed; z-index: 45;
  visibility: hidden; will-change: transform;
  background: transparent; pointer-events: none;
}
#flip-clone img {
  width: 100%; height: 100%; object-fit: contain; display: block;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.5));
}

/* ── modals ───────────────────────────────── */
.modal {
  position: fixed; inset: 0; z-index: 50; display: flex; align-items: center; justify-content: center;
  padding: 20px; visibility: hidden; pointer-events: none;
  background: rgba(4, 6, 10, 0.55); opacity: 0;
  transition: opacity 0.45s var(--ease-out), visibility 0.45s;
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.modal.open { visibility: visible; pointer-events: auto; opacity: 1; }
.modal-card {
  position: relative; width: min(560px, 94vw); border-radius: 28px;
  background: linear-gradient(160deg, rgba(22, 28, 42, 0.92), rgba(10, 14, 22, 0.94));
  border: 1px solid var(--glass-edge);
  padding: clamp(30px, 5vw, 52px);
  box-shadow: 0 40px 120px rgba(0, 0, 0, 0.6);
  transform: translateY(30px) scale(0.97);
  transition: transform 0.5s var(--ease-out);
}
.modal.open .modal-card { transform: none; }
.modal-close {
  position: absolute; top: 20px; right: 22px; color: var(--ink-faint);
  font-size: 14px; padding: 8px; transition: color 0.3s;
}
.modal-close:hover { color: var(--ink); }
.modal-kicker { color: var(--coral); margin-bottom: 18px; }
.modal-title { font-size: clamp(24px, 4vw, 33px); font-weight: 800; line-height: 1.3; margin-bottom: 18px; }
.modal-text { color: var(--ink-dim); line-height: 1.9; font-size: 15.5px; margin-bottom: 28px; }
.steps { display: flex; gap: 10px; margin-bottom: 30px; flex-wrap: wrap; }
.step {
  flex: 1; min-width: 130px; border: 1px solid var(--glass-edge); border-radius: 16px;
  padding: 16px 18px; display: flex; flex-direction: column; gap: 10px;
  font-weight: 600; font-size: 14.5px; background: rgba(233, 237, 244, 0.03);
}
.step-num { color: var(--coral); }
.modal-foot { color: var(--ink-faint); line-height: 1.9; }
.dl-row { margin-bottom: 26px; }

/* ── responsive ───────────────────────────── */
@media (max-width: 900px) { .blurb { display: none; } }
@media (max-width: 640px) {
  .clocks { display: none; }
  .brand-sub { display: none; }
  .brand-name { font-size: 18px; }
  .cta-pill { padding: 11px 18px; font-size: 13px; }
  .pill-item { padding: 10px 14px; font-size: 13px; }
  .lang-pill { padding: 10px 12px; }
  .theme-btn { width: 38px; height: 38px; }
  .bottom-right { gap: 8px; }
  .sound { font-size: 0; gap: 0; }
  .sound .sound-bars { height: 14px; }
  .sound .sound-bars i { width: 3px; }
  #chrome-bottom { gap: 8px; }
  #drag-hint { bottom: 84px; width: max-content; }
  .detail-actions { padding-bottom: 80px; }
}

/* ════════════ light-theme atmosphere overrides ════════════ */
:root[data-theme="light"] #vignette {
  background:
    radial-gradient(125% 95% at 50% 50%, transparent 58%, rgba(150, 120, 88, 0.10) 88%, rgba(120, 92, 64, 0.18) 100%),
    linear-gradient(180deg, rgba(120, 92, 64, 0.06) 0%, transparent 16%, transparent 84%, rgba(120, 92, 64, 0.07) 100%);
}
:root[data-theme="light"] #grain { opacity: 0.03; }
:root[data-theme="light"] #loader {
  background: radial-gradient(90% 90% at 50% 42%, #fbf7f0 0%, #ece4d7 72%);
}
:root[data-theme="light"] .pill-nav { box-shadow: 0 10px 40px rgba(80, 60, 40, 0.14); }
:root[data-theme="light"] .modal { background: rgba(60, 48, 34, 0.34); }
:root[data-theme="light"] .modal-card {
  background: linear-gradient(160deg, rgba(255, 253, 249, 0.97), rgba(244, 238, 228, 0.98));
  box-shadow: 0 40px 120px rgba(80, 60, 40, 0.20);
}
:root[data-theme="light"] .step { background: rgba(34, 31, 26, 0.035); }
:root[data-theme="light"] .detail-chips span { background: rgba(34, 31, 26, 0.04); }
:root[data-theme="light"] .detail-hero img { filter: drop-shadow(0 30px 60px rgba(80, 60, 40, 0.28)); }
:root[data-theme="light"] #flip-clone img { filter: drop-shadow(0 20px 40px rgba(80, 60, 40, 0.26)); }
:root[data-theme="light"] ::selection { background: var(--coral-deep); color: #fff; }