Web3 — NFT Detail (traits · history · buy)

:root {
  --bg: #0a0b0f;
  --surface: #13151c;
  --surface-2: #1b1e27;
  --elevated: #23262f;
  --text: #e9ecf2;
  --muted: #8a90a2;
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.16);
  --accent: #7c5cff;
  --accent-2: #00e0c6;
  --accent-glow: rgba(124, 92, 255, 0.45);
  --pos: #26d07c;
  --neg: #ff4d6d;
  --warn: #ffb347;
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-pill: 999px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(1100px 540px at 85% -10%, rgba(124, 92, 255, 0.14), transparent 60%),
    radial-gradient(900px 480px at -10% 30%, rgba(0, 224, 198, 0.07), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: "Space Grotesk", system-ui, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.mono { font-family: "JetBrains Mono", ui-monospace, monospace; }
.muted { color: var(--muted); }
.small { font-size: 0.8rem; }
.pos { color: var(--pos); }
.neg { color: var(--neg); }
.link { color: var(--accent-2); cursor: pointer; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

a { color: inherit; text-decoration: none; }

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

:is(button, a, input):focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

/* ---------- glass surfaces ---------- */
.glass {
  background: rgba(19, 21, 28, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.glass-strong {
  background: linear-gradient(160deg, rgba(35, 38, 47, 0.85), rgba(19, 21, 28, 0.9));
  border: 1px solid var(--line-2);
  border-radius: var(--r-lg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

/* ---------- topbar ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 14px 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(10, 11, 15, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 40;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}

.brand-dim { color: var(--muted); font-weight: 500; }

.brand-mark {
  width: 22px; height: 22px;
  border-radius: 7px;
  background: conic-gradient(from 210deg, var(--accent), var(--accent-2), var(--accent));
  box-shadow: 0 0 14px var(--accent-glow);
}

.topbar-nav { display: flex; gap: 6px; margin-right: auto; }

.topnav-link {
  padding: 7px 14px;
  border-radius: var(--r-pill);
  color: var(--muted);
  font-weight: 500;
  font-size: 0.92rem;
  transition: color 0.15s, background 0.15s;
}

.topnav-link:hover { color: var(--text); background: rgba(255, 255, 255, 0.05); }
.topnav-link.is-active { color: var(--text); background: rgba(124, 92, 255, 0.16); }

.wallet-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-pill);
  background: var(--surface);
  font-size: 0.82rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.wallet-chip:hover { border-color: var(--accent); box-shadow: 0 0 16px rgba(124, 92, 255, 0.25); }

.wallet-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--pos);
  box-shadow: 0 0 8px rgba(38, 208, 124, 0.8);
}

.wallet-bal {
  color: var(--accent-2);
  border-left: 1px solid var(--line);
  padding-left: 10px;
}

/* ---------- breadcrumbs ---------- */
.crumbs {
  max-width: 1240px;
  margin: 0 auto;
  padding: 18px 28px 0;
  display: flex;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--muted);
}

.crumbs a:hover { color: var(--accent-2); }
.crumbs [aria-current] { color: var(--text); }

/* ---------- layout ---------- */
.layout {
  max-width: 1240px;
  margin: 0 auto;
  padding: 22px 28px 80px;
  display: grid;
  grid-template-columns: minmax(340px, 480px) 1fr;
  gap: 36px;
  align-items: start;
}

/* ---------- artwork ---------- */
.art-frame {
  position: relative;
  margin: 0;
  border-radius: var(--r-lg);
  padding: 1px;
  background: linear-gradient(155deg, rgba(124, 92, 255, 0.7), rgba(255, 255, 255, 0.08) 40%, rgba(0, 224, 198, 0.55));
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55), 0 0 44px rgba(124, 92, 255, 0.16);
}

.art-canvas {
  position: relative;
  aspect-ratio: 1;
  border-radius: calc(var(--r-lg) - 1px);
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 80% 110%, rgba(0, 224, 198, 0.18), transparent 55%),
    radial-gradient(100% 80% at 15% -5%, rgba(124, 92, 255, 0.3), transparent 60%),
    #0c0e16;
}

.art-stars {
  position: absolute; inset: 0;
  background-image:
    radial-gradient(1.5px 1.5px at 12% 22%, rgba(255, 255, 255, 0.9), transparent 60%),
    radial-gradient(1px 1px at 34% 64%, rgba(255, 255, 255, 0.7), transparent 60%),
    radial-gradient(2px 2px at 58% 14%, rgba(255, 255, 255, 0.55), transparent 60%),
    radial-gradient(1px 1px at 73% 42%, rgba(255, 255, 255, 0.8), transparent 60%),
    radial-gradient(1.5px 1.5px at 88% 78%, rgba(255, 255, 255, 0.65), transparent 60%),
    radial-gradient(1px 1px at 22% 86%, rgba(255, 255, 255, 0.7), transparent 60%),
    radial-gradient(1px 1px at 47% 35%, rgba(255, 255, 255, 0.45), transparent 60%);
  animation: twinkle 5s ease-in-out infinite alternate;
}

@keyframes twinkle {
  from { opacity: 0.55; }
  to { opacity: 1; }
}

.art-grid {
  position: absolute;
  inset: auto -20% -32% -20%;
  height: 62%;
  background:
    linear-gradient(rgba(0, 224, 198, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 224, 198, 0.22) 1px, transparent 1px);
  background-size: 44px 34px;
  transform: perspective(420px) rotateX(62deg);
  transform-origin: top;
  mask-image: linear-gradient(to bottom, transparent, #000 25%, #000 70%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 25%, #000 70%, transparent);
}

.art-orb {
  position: absolute;
  top: 16%;
  left: 50%;
  width: 46%;
  aspect-ratio: 1;
  transform: translateX(-50%);
  animation: drift 7s ease-in-out infinite alternate;
}

@keyframes drift {
  from { transform: translateX(-54%) translateY(0); }
  to { transform: translateX(-46%) translateY(4%); }
}

.art-orb-core {
  position: absolute; inset: 0;
  border-radius: 50%;
  background:
    radial-gradient(circle at 32% 28%, #c9b8ff, var(--accent) 42%, #2b1e6b 78%, #16113a);
  box-shadow:
    0 0 60px var(--accent-glow),
    0 0 120px rgba(0, 224, 198, 0.18),
    inset -16px -20px 48px rgba(0, 0, 0, 0.55);
}

.art-orb-ring {
  position: absolute;
  left: 50%; top: 50%;
  border: 1.5px solid rgba(0, 224, 198, 0.55);
  border-radius: 50%;
  transform: translate(-50%, -50%) rotateX(72deg);
}

.art-orb-ring.r1 { width: 150%; height: 150%; animation: ringspin 14s linear infinite; }
.art-orb-ring.r2 {
  width: 184%; height: 184%;
  border-color: rgba(124, 92, 255, 0.4);
  border-style: dashed;
  animation: ringspin 22s linear infinite reverse;
}

@keyframes ringspin {
  from { transform: translate(-50%, -50%) rotateX(72deg) rotateZ(0deg); }
  to { transform: translate(-50%, -50%) rotateX(72deg) rotateZ(360deg); }
}

.art-comet {
  position: absolute;
  top: 18%;
  left: -12%;
  width: 90px; height: 2px;
  border-radius: var(--r-pill);
  background: linear-gradient(90deg, transparent, var(--accent-2));
  box-shadow: 0 0 12px rgba(0, 224, 198, 0.8);
  animation: comet 6.5s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  opacity: 0;
}

@keyframes comet {
  0% { transform: translate(0, 0) rotate(14deg); opacity: 0; }
  6% { opacity: 1; }
  26% { transform: translate(360px, 110px) rotate(14deg); opacity: 0; }
  100% { transform: translate(360px, 110px) rotate(14deg); opacity: 0; }
}

.art-sig {
  position: absolute;
  bottom: 14px;
  right: 16px;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: rgba(233, 236, 242, 0.55);
}

.art-zoom {
  position: absolute;
  top: 14px;
  right: 14px;
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  border-radius: var(--r-md);
  background: rgba(10, 11, 15, 0.6);
  border: 1px solid var(--line-2);
  color: var(--text);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}

.art-zoom:hover { border-color: var(--accent); box-shadow: 0 0 14px var(--accent-glow); transform: scale(1.06); }

/* fullscreen mode */
.art-frame.is-fullscreen {
  position: fixed;
  inset: 0;
  z-index: 100;
  border-radius: 0;
  padding: 0;
  background: rgba(8, 9, 12, 0.96);
  display: grid;
  place-items: center;
}

.art-frame.is-fullscreen .art-canvas {
  width: min(92vw, 86vh);
  border-radius: var(--r-lg);
}

.art-frame.is-fullscreen .art-zoom { top: 22px; right: 22px; }

/* ---------- art actions ---------- */
.art-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
  transition: color 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.icon-btn:hover { color: var(--text); border-color: var(--line-2); }

.icon-btn[aria-pressed="true"] {
  color: var(--neg);
  border-color: rgba(255, 77, 109, 0.5);
  box-shadow: 0 0 14px rgba(255, 77, 109, 0.2);
}

.icon-btn[aria-pressed="true"] svg { fill: var(--neg); stroke: var(--neg); }
.icon-btn.fav-pop svg { animation: favpop 0.35s ease; }

@keyframes favpop {
  0% { transform: scale(1); }
  40% { transform: scale(1.45); }
  100% { transform: scale(1); }
}

.views { margin-left: auto; font-size: 0.82rem; }

/* ---------- chain details card ---------- */
.chain-card { margin-top: 18px; padding: 18px 20px; }

.panel-h {
  margin: 0 0 12px;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.kv { margin: 0; display: grid; gap: 9px; }

.kv > div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.88rem;
}

.kv dt { color: var(--muted); }
.kv dd { margin: 0; text-align: right; }
.kv-wide { gap: 12px; }

/* ---------- right column ---------- */
.info-col { min-width: 0; }

.collection-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.collection-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 600;
  color: var(--accent-2);
}

.collection-link:hover { text-decoration: underline; text-underline-offset: 3px; }

.collection-avatar {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: conic-gradient(from 120deg, var(--accent-2), var(--accent), #ff7ad9, var(--accent-2));
  box-shadow: 0 0 10px rgba(0, 224, 198, 0.4);
}

.verified { color: var(--accent-2); flex-shrink: 0; }

.floor-pill {
  font-size: 0.78rem;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  padding: 5px 12px;
  background: var(--surface);
}

.token-title {
  margin: 10px 0 12px;
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.token-id {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
}

.owner-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.owner-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 14px 7px 8px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: var(--surface);
  font-size: 0.85rem;
  color: var(--muted);
}

.owner-chip a { color: var(--accent-2); font-size: 0.82rem; }
.owner-chip a:hover { text-decoration: underline; }

.owner-avatar {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff7ad9, var(--accent));
}

.rank-pill {
  font-size: 0.8rem;
  color: var(--warn);
  border: 1px solid rgba(255, 179, 71, 0.35);
  background: rgba(255, 179, 71, 0.08);
  border-radius: var(--r-pill);
  padding: 6px 13px;
}

/* ---------- price panel ---------- */
.price-panel {
  position: relative;
  padding: 22px 24px;
  overflow: hidden;
}

.price-panel::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(140deg, var(--accent), transparent 35%, transparent 65%, var(--accent-2));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.auction-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--muted);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.live-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--neg);
  box-shadow: 0 0 0 0 rgba(255, 77, 109, 0.6);
  animation: livepulse 1.6s ease-out infinite;
}

@keyframes livepulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 77, 109, 0.55); }
  100% { box-shadow: 0 0 0 9px rgba(255, 77, 109, 0); }
}

.countdown { display: flex; align-items: baseline; gap: 4px; margin-left: auto; }

.cd-cell {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  min-width: 46px;
  padding: 6px 8px 4px;
  border-radius: var(--r-sm);
  background: var(--surface);
  border: 1px solid var(--line);
}

.cd-cell b { font-size: 1.05rem; font-weight: 700; color: var(--text); font-variant-numeric: tabular-nums; }
.cd-cell i { font-style: normal; font-size: 0.6rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.cd-sep { color: var(--muted); font-weight: 700; align-self: center; }

.countdown.is-urgent .cd-cell { border-color: rgba(255, 77, 109, 0.5); }
.countdown.is-urgent .cd-cell b { color: var(--neg); }

.price-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  padding: 18px 0;
  flex-wrap: wrap;
}

.price-main .muted, .price-side .muted { font-size: 0.78rem; letter-spacing: 0.05em; text-transform: uppercase; }

.price-big {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.price-big .ticker {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-2);
  letter-spacing: 0.06em;
}

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

.price-side { text-align: right; }
.offer-top { font-size: 1.1rem; font-weight: 700; color: var(--text); }

.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: var(--r-md);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s, border-color 0.15s;
}

.btn:active { transform: translateY(1px) scale(0.99); }

.btn-primary {
  flex: 1;
  min-width: 200px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #5a3df0);
  box-shadow: 0 8px 26px var(--accent-glow);
}

.btn-primary:hover { box-shadow: 0 10px 34px var(--accent-glow), 0 0 0 1px rgba(255, 255, 255, 0.14) inset; transform: translateY(-1px); }

.btn-primary:disabled { opacity: 0.65; cursor: progress; transform: none; }

.btn-ghost {
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.btn-ghost:hover { border-color: var(--accent-2); color: var(--accent-2); }

.fee-note { margin: 14px 0 0; font-size: 0.78rem; }

/* ---------- traits ---------- */
.traits-section { margin-top: 26px; }

.traits-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}

.trait-card {
  position: relative;
  padding: 12px 14px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--surface);
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
  cursor: default;
}

.trait-card:hover, .trait-card:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(124, 92, 255, 0.55);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.4), 0 0 16px rgba(124, 92, 255, 0.15);
}

.trait-type {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 3px;
}

.trait-value { display: block; font-weight: 600; font-size: 0.92rem; }

.trait-rarity {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  font-size: 0.72rem;
  color: var(--muted);
}

.trait-bar {
  flex: 1;
  height: 4px;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.07);
  overflow: hidden;
}

.trait-bar i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.trait-card.is-legendary { border-color: rgba(255, 179, 71, 0.45); }
.trait-card.is-legendary .trait-type { color: var(--warn); }

.trait-tooltip {
  position: fixed;
  z-index: 90;
  max-width: 240px;
  padding: 9px 12px;
  border-radius: var(--r-sm);
  background: var(--elevated);
  border: 1px solid var(--line-2);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
  font-size: 0.74rem;
  color: var(--text);
  pointer-events: none;
}

/* ---------- tabs ---------- */
.tabs-section { margin-top: 26px; padding: 8px 20px 20px; }

.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 18px;
  overflow-x: auto;
}

.tab {
  position: relative;
  padding: 13px 16px;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.92rem;
  white-space: nowrap;
  transition: color 0.15s;
}

.tab:hover { color: var(--text); }

.tab.is-active { color: var(--text); }

.tab.is-active::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: -1px;
  height: 2px;
  border-radius: var(--r-pill);
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 10px var(--accent-glow);
}

.tab-badge {
  font-size: 0.7rem;
  padding: 2px 7px;
  border-radius: var(--r-pill);
  background: rgba(124, 92, 255, 0.2);
  color: #b7a6ff;
  margin-left: 4px;
}

.tab-panel { animation: panelin 0.25s ease; }

@keyframes panelin {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- tables ---------- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
}

.data-table th {
  text-align: left;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
}

.data-table td { padding: 11px 10px; border-bottom: 1px solid var(--line); }
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr { transition: background 0.12s; }
.data-table tbody tr:hover { background: rgba(255, 255, 255, 0.025); }

.event-pill {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  font-size: 0.72rem;
  font-weight: 600;
}

.ev-sale { background: rgba(38, 208, 124, 0.14); color: var(--pos); }
.ev-list { background: rgba(124, 92, 255, 0.16); color: #b7a6ff; }
.ev-xfer { background: rgba(255, 255, 255, 0.07); color: var(--muted); }
.ev-mint { background: rgba(0, 224, 198, 0.12); color: var(--accent-2); }

/* ---------- chart ---------- */
.chart-wrap { margin-bottom: 20px; }

.chart-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 8px;
}

#priceChart {
  display: block;
  width: 100%;
  height: 150px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
}

.chart-axis {
  display: flex;
  justify-content: space-between;
  font-size: 0.68rem;
  margin-top: 6px;
  padding: 0 4px;
}

/* ---------- confirm sheet ---------- */
.sheet-backdrop {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(6, 7, 10, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: fadein 0.2s ease;
}

@keyframes fadein { from { opacity: 0; } to { opacity: 1; } }

.sheet {
  position: fixed;
  z-index: 70;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: min(520px, 100%);
  max-height: 92vh;
  overflow-y: auto;
  padding: 14px 26px 26px;
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  border-bottom: none;
  box-shadow: 0 -20px 60px rgba(0, 0, 0, 0.6);
  animation: sheetup 0.3s cubic-bezier(0.2, 0.9, 0.3, 1);
}

@keyframes sheetup {
  from { transform: translate(-50%, 40px); opacity: 0; }
  to { transform: translate(-50%, 0); opacity: 1; }
}

.sheet-grab {
  width: 44px; height: 4px;
  border-radius: var(--r-pill);
  background: var(--line-2);
  margin: 0 auto 16px;
}

.sheet h2 { margin: 0 0 16px; font-size: 1.2rem; }

.sheet-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  border-radius: var(--r-md);
  background: var(--surface);
  border: 1px solid var(--line);
  margin-bottom: 16px;
}

.sheet-item > div { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.sheet-item strong { font-size: 0.95rem; }
.sheet-price { margin-left: auto; font-weight: 700; color: var(--accent-2); white-space: nowrap; }

.sheet-thumb {
  width: 46px; height: 46px;
  flex-shrink: 0;
  border-radius: var(--r-sm);
  background:
    radial-gradient(circle at 35% 30%, #c9b8ff, var(--accent) 50%, #16113a),
    #0c0e16;
  box-shadow: 0 0 14px var(--accent-glow);
}

.offer-field { display: grid; gap: 6px; margin-bottom: 16px; }
.offer-field label { font-size: 0.82rem; color: var(--muted); }

.offer-field input {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-2);
  background: var(--surface);
  color: var(--text);
  font-size: 1rem;
}

.offer-field input:focus-visible { outline: 2px solid var(--accent); outline-offset: 0; border-color: var(--accent); }

.sheet-kv {
  padding: 14px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--line);
  margin-bottom: 16px;
}

.kv-total { padding-top: 9px; border-top: 1px solid var(--line); font-weight: 700; }
.kv-total dd { color: var(--accent-2); }

.risk-note {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 12px 14px;
  border-radius: var(--r-md);
  background: rgba(255, 179, 71, 0.08);
  border: 1px solid rgba(255, 179, 71, 0.32);
  color: var(--warn);
  font-size: 0.8rem;
  line-height: 1.45;
  margin-bottom: 18px;
}

.risk-note svg { flex-shrink: 0; margin-top: 2px; }

.sheet-actions { display: flex; gap: 12px; }
.sheet-actions .btn-ghost { flex: 1; }
.sheet-actions .btn-primary { flex: 2; min-width: 0; }

.btn-spinner {
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- toasts ---------- */
.toast-stack {
  position: fixed;
  bottom: 22px;
  right: 22px;
  z-index: 110;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: var(--r-md);
  background: var(--elevated);
  border: 1px solid var(--line-2);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.5);
  font-size: 0.88rem;
  animation: toastin 0.3s cubic-bezier(0.2, 0.9, 0.3, 1);
}

.toast.is-success { border-color: rgba(38, 208, 124, 0.45); }
.toast.is-success::before { content: "✓"; color: var(--pos); font-weight: 700; }
.toast.is-leaving { opacity: 0; transform: translateY(8px); transition: opacity 0.3s, transform 0.3s; }

@keyframes toastin {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* number flash on price update */
.flash-pos { animation: flashpos 0.8s ease; }
@keyframes flashpos {
  0% { color: var(--pos); text-shadow: 0 0 14px rgba(38, 208, 124, 0.6); }
  100% { color: inherit; text-shadow: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .layout { grid-template-columns: 1fr; gap: 26px; }
  .art-col { max-width: 560px; }
  .topbar-nav { display: none; }
}

@media (max-width: 520px) {
  .topbar { padding: 12px 16px; gap: 12px; }
  .wallet-bal { display: none; }
  .crumbs, .layout { padding-left: 16px; padding-right: 16px; }
  .layout { padding-top: 16px; }
  .token-title { font-size: 1.55rem; }
  .price-panel { padding: 18px 16px; }
  .auction-row { font-size: 0.78rem; }
  .countdown { margin-left: 0; width: 100%; justify-content: flex-start; }
  .cd-cell { min-width: 40px; }
  .price-side { text-align: left; }
  .cta-row { flex-direction: column; }
  .btn-primary { min-width: 0; }
  .traits-grid { grid-template-columns: repeat(2, 1fr); }
  .tabs-section { padding: 4px 12px 14px; }
  .data-table { font-size: 0.78rem; }
  .data-table th, .data-table td { padding: 8px 6px; }
  .sheet { padding: 12px 18px 20px; }
  .views { display: none; }
  .toast-stack { left: 16px; right: 16px; }
  .toast { justify-content: center; }
}

/* Web3 — NFT Detail (traits · history · buy)
   UI-only simulation. No wallet, RPC, or on-chain calls — all data is mocked. */
(() => {
  "use strict";

  const $ = (sel, root = document) => root.querySelector(sel);

  const NOVA_USD = 179.0; // mock spot price for fiat estimates
  const BUY_PRICE = 8.45;
  const MARKET_FEE = 0.025;
  const ROYALTY = 0.05;
  const GAS = 0.0021;

  /* ---------------------------------- toast ---------------------------------- */
  const toastStack = $("#toastStack");

  function toast(msg, type = "default") {
    const el = document.createElement("div");
    el.className = "toast" + (type === "success" ? " is-success" : "");
    el.textContent = msg;
    toastStack.appendChild(el);
    setTimeout(() => {
      el.classList.add("is-leaving");
      setTimeout(() => el.remove(), 320);
    }, 3200);
  }

  /* ---------------------------------- traits ---------------------------------- */
  const TRAITS = [
    { type: "Background", value: "Deep Void", rarity: 11.2, floor: "6.2 NOVA", count: 995 },
    { type: "Core", value: "Violet Nebula", rarity: 6.4, floor: "7.1 NOVA", count: 569 },
    { type: "Ring System", value: "Twin Halo", rarity: 3.1, floor: "9.8 NOVA", count: 276 },
    { type: "Comet Trail", value: "Teal Streak", rarity: 4.8, floor: "8.4 NOVA", count: 427 },
    { type: "Star Field", value: "Dense Cluster", rarity: 9.7, floor: "6.6 NOVA", count: 862 },
    { type: "Horizon Grid", value: "Cyan Mesh", rarity: 7.5, floor: "6.9 NOVA", count: 667 },
    { type: "Aura", value: "Genesis Glow", rarity: 0.9, floor: "21.0 NOVA", count: 80, legendary: true },
  ];

  const traitsGrid = $("#traitsGrid");
  const tooltip = $("#traitTooltip");

  TRAITS.forEach((t) => {
    const li = document.createElement("li");
    const btn = document.createElement("button");
    btn.type = "button";
    btn.className = "trait-card" + (t.legendary ? " is-legendary" : "");
    btn.setAttribute(
      "aria-label",
      `${t.type}: ${t.value}, ${t.rarity}% of tokens have this trait. Trait floor ${t.floor}.`
    );
    btn.innerHTML = `
      <span class="trait-type">${t.type}</span>
      <span class="trait-value">${t.value}</span>
      <span class="trait-rarity">
        <span class="trait-bar"><i style="width:${Math.max(t.rarity * 4, 4)}%"></i></span>
        <span class="mono">${t.rarity}%</span>
      </span>`;
    btn.dataset.tip = `${t.count} of 8,888 (${t.rarity}%) · floor ${t.floor}`;
    li.appendChild(btn);
    traitsGrid.appendChild(li);
  });

  function showTooltip(target, x, y) {
    tooltip.textContent = target.dataset.tip;
    tooltip.hidden = false;
    const pad = 14;
    const rect = tooltip.getBoundingClientRect();
    let left = x + pad;
    let top = y + pad;
    if (left + rect.width > window.innerWidth - 8) left = x - rect.width - pad;
    if (top + rect.height > window.innerHeight - 8) top = y - rect.height - pad;
    tooltip.style.left = `${Math.max(8, left)}px`;
    tooltip.style.top = `${Math.max(8, top)}px`;
  }

  traitsGrid.addEventListener("mousemove", (e) => {
    const card = e.target.closest(".trait-card");
    if (card) showTooltip(card, e.clientX, e.clientY);
    else tooltip.hidden = true;
  });
  traitsGrid.addEventListener("mouseleave", () => (tooltip.hidden = true));
  traitsGrid.addEventListener("focusin", (e) => {
    const card = e.target.closest(".trait-card");
    if (!card) return;
    const r = card.getBoundingClientRect();
    showTooltip(card, r.left + r.width / 2, r.bottom);
  });
  traitsGrid.addEventListener("focusout", () => (tooltip.hidden = true));

  /* ---------------------------------- countdown ---------------------------------- */
  const cdH = $("#cdH");
  const cdM = $("#cdM");
  const cdS = $("#cdS");
  const countdown = $("#countdown");
  let remaining = 2 * 3600 + 14 * 60 + 9; // 02:14:09

  const pad2 = (n) => String(n).padStart(2, "0");

  function tick() {
    remaining -= 1;
    if (remaining <= 0) {
      // anti-snipe style extension keeps the demo alive
      remaining = 10 * 60;
      toast("Auction extended by 10 minutes (anti-snipe)");
    }
    cdH.textContent = pad2(Math.floor(remaining / 3600));
    cdM.textContent = pad2(Math.floor((remaining % 3600) / 60));
    cdS.textContent = pad2(remaining % 60);
    countdown.classList.toggle("is-urgent", remaining < 15 * 60);
  }
  tick();
  setInterval(tick, 1000);

  /* ---------------------------------- tabs ---------------------------------- */
  const tabs = Array.from(document.querySelectorAll('[role="tab"]'));

  function selectTab(tab) {
    tabs.forEach((t) => {
      const active = t === tab;
      t.classList.toggle("is-active", active);
      t.setAttribute("aria-selected", String(active));
      t.tabIndex = active ? 0 : -1;
      document.getElementById(t.getAttribute("aria-controls")).hidden = !active;
    });
  }

  tabs.forEach((tab, i) => {
    tab.addEventListener("click", () => selectTab(tab));
    tab.addEventListener("keydown", (e) => {
      let next = null;
      if (e.key === "ArrowRight") next = tabs[(i + 1) % tabs.length];
      if (e.key === "ArrowLeft") next = tabs[(i - 1 + tabs.length) % tabs.length];
      if (e.key === "Home") next = tabs[0];
      if (e.key === "End") next = tabs[tabs.length - 1];
      if (next) {
        e.preventDefault();
        selectTab(next);
        next.focus();
      }
    });
  });

  /* ---------------------------------- price chart ---------------------------------- */
  const SALES = [3.2, 3.6, 3.4, 4.25, 4.9, 5.4, 5.1, 6.1, 6.8, 7.4, 8.45];

  function renderChart() {
    const svg = $("#priceChart");
    const W = 560;
    const H = 160;
    const padX = 14;
    const padY = 18;
    const min = Math.min(...SALES);
    const max = Math.max(...SALES);
    const x = (i) => padX + (i / (SALES.length - 1)) * (W - padX * 2);
    const y = (v) => H - padY - ((v - min) / (max - min)) * (H - padY * 2);
    const pts = SALES.map((v, i) => `${x(i).toFixed(1)},${y(v).toFixed(1)}`);

    const ns = "http://www.w3.org/2000/svg";
    const defs = document.createElementNS(ns, "defs");
    defs.innerHTML = `
      <linearGradient id="lineGrad" x1="0" y1="0" x2="1" y2="0">
        <stop offset="0" stop-color="#7c5cff"/><stop offset="1" stop-color="#00e0c6"/>
      </linearGradient>
      <linearGradient id="fillGrad" x1="0" y1="0" x2="0" y2="1">
        <stop offset="0" stop-color="rgba(124,92,255,0.30)"/>
        <stop offset="1" stop-color="rgba(124,92,255,0)"/>
      </linearGradient>`;
    svg.appendChild(defs);

    const area = document.createElementNS(ns, "path");
    area.setAttribute(
      "d",
      `M${pts[0]} L${pts.slice(1).join(" L")} L${x(SALES.length - 1)},${H} L${x(0)},${H} Z`
    );
    area.setAttribute("fill", "url(#fillGrad)");
    svg.appendChild(area);

    const line = document.createElementNS(ns, "path");
    line.setAttribute("d", `M${pts[0]} L${pts.slice(1).join(" L")}`);
    line.setAttribute("fill", "none");
    line.setAttribute("stroke", "url(#lineGrad)");
    line.setAttribute("stroke-width", "2.5");
    line.setAttribute("stroke-linecap", "round");
    line.setAttribute("stroke-linejoin", "round");
    svg.appendChild(line);

    const dot = document.createElementNS(ns, "circle");
    dot.setAttribute("cx", x(SALES.length - 1));
    dot.setAttribute("cy", y(SALES[SALES.length - 1]));
    dot.setAttribute("r", "4");
    dot.setAttribute("fill", "#0a0b0f");
    dot.setAttribute("stroke", "#00e0c6");
    dot.setAttribute("stroke-width", "2");
    svg.appendChild(dot);

    // draw-in animation
    const len = line.getTotalLength();
    line.style.strokeDasharray = len;
    line.style.strokeDashoffset = len;
    line.getBoundingClientRect(); // force layout
    line.style.transition = "stroke-dashoffset 1.1s ease";
    line.style.strokeDashoffset = "0";
  }
  renderChart();

  /* ---------------------------------- favorites ---------------------------------- */
  const favBtn = $("#favBtn");
  const favCount = $("#favCount");
  let favs = 312;
  let faved = false;

  favBtn.addEventListener("click", () => {
    faved = !faved;
    favs += faved ? 1 : -1;
    favCount.textContent = favs.toLocaleString("en-US");
    favBtn.setAttribute("aria-pressed", String(faved));
    favBtn.setAttribute("aria-label", faved ? "Remove from favorites" : "Add to favorites");
    favBtn.classList.remove("fav-pop");
    void favBtn.offsetWidth; // restart animation
    favBtn.classList.add("fav-pop");
    if (faved) toast("Added to your favorites", "success");
  });

  /* ---------------------------------- share / refresh ---------------------------------- */
  $("#shareBtn").addEventListener("click", async () => {
    const url = "https://lumen.market/nebula-drifters/2481";
    try {
      await navigator.clipboard.writeText(url);
      toast("Link copied to clipboard", "success");
    } catch {
      toast(`Share link: ${url}`);
    }
  });

  $("#refreshBtn").addEventListener("click", () => {
    toast("Metadata refresh queued — already frozen on-chain");
  });

  $("#walletChip").addEventListener("click", () => {
    toast("Wallet 0x7a3f…c41d connected · 14.82 NOVA (simulated)");
  });

  /* ---------------------------------- fullscreen artwork ---------------------------------- */
  const artFrame = $("#artFrame");
  const zoomBtn = $("#zoomBtn");

  function setFullscreen(on) {
    artFrame.classList.toggle("is-fullscreen", on);
    zoomBtn.setAttribute("aria-label", on ? "Exit fullscreen view" : "Toggle fullscreen view");
    document.body.style.overflow = on ? "hidden" : "";
  }

  zoomBtn.addEventListener("click", () => setFullscreen(!artFrame.classList.contains("is-fullscreen")));
  artFrame.addEventListener("click", (e) => {
    if (artFrame.classList.contains("is-fullscreen") && e.target === artFrame) setFullscreen(false);
  });

  /* ---------------------------------- confirm sheet (buy / offer) ---------------------------------- */
  const backdrop = $("#sheetBackdrop");
  const sheet = $("#confirmSheet");
  const sheetTitle = $("#sheetTitle");
  const sheetPrice = $("#sheetPrice");
  const offerField = $("#offerField");
  const offerInput = $("#offerInput");
  const rowItem = $("#rowItem");
  const rowFee = $("#rowFee");
  const rowRoyalty = $("#rowRoyalty");
  const rowTotal = $("#rowTotal");
  const cancelBtn = $("#sheetCancel");
  const confirmBtn = $("#sheetConfirm");
  const confirmLabel = confirmBtn.querySelector(".btn-label");
  const spinner = confirmBtn.querySelector(".btn-spinner");

  let mode = "buy"; // "buy" | "offer"
  let lastFocus = null;
  let signing = false;

  const fmt = (n) => `${n.toFixed(4)} NOVA`;

  function updateBreakdown() {
    const base = mode === "buy" ? BUY_PRICE : Math.max(parseFloat(offerInput.value) || 0, 0);
    const fee = base * MARKET_FEE;
    const royalty = base * ROYALTY;
    rowItem.textContent = fmt(base);
    rowFee.textContent = fmt(fee);
    rowRoyalty.textContent = fmt(royalty);
    rowTotal.textContent = fmt(base + fee + royalty + GAS);
    sheetPrice.textContent = `${base.toFixed(2)} NOVA`;
  }

  function openSheet(which) {
    mode = which;
    lastFocus = document.activeElement;
    sheetTitle.textContent = mode === "buy" ? "Confirm purchase" : "Make an offer";
    confirmLabel.textContent = mode === "buy" ? "Approve in wallet" : "Sign offer";
    offerField.hidden = mode === "buy";
    updateBreakdown();
    backdrop.hidden = false;
    sheet.hidden = false;
    (mode === "offer" ? offerInput : confirmBtn).focus();
  }

  function closeSheet() {
    if (signing) return;
    backdrop.hidden = true;
    sheet.hidden = true;
    if (lastFocus) lastFocus.focus();
  }

  $("#buyBtn").addEventListener("click", () => openSheet("buy"));
  $("#offerBtn").addEventListener("click", () => openSheet("offer"));
  cancelBtn.addEventListener("click", closeSheet);
  backdrop.addEventListener("click", closeSheet);
  offerInput.addEventListener("input", updateBreakdown);

  document.addEventListener("keydown", (e) => {
    if (e.key !== "Escape") return;
    if (!sheet.hidden) closeSheet();
    else if (artFrame.classList.contains("is-fullscreen")) setFullscreen(false);
  });

  // rudimentary focus trap inside the sheet
  sheet.addEventListener("keydown", (e) => {
    if (e.key !== "Tab") return;
    const focusables = sheet.querySelectorAll("button, input");
    const first = focusables[0];
    const last = focusables[focusables.length - 1];
    if (e.shiftKey && document.activeElement === first) {
      e.preventDefault();
      last.focus();
    } else if (!e.shiftKey && document.activeElement === last) {
      e.preventDefault();
      first.focus();
    }
  });

  confirmBtn.addEventListener("click", () => {
    if (signing) return;
    if (mode === "offer") {
      const v = parseFloat(offerInput.value);
      if (!v || v <= 0) {
        toast("Enter an offer above 0 NOVA");
        offerInput.focus();
        return;
      }
    }
    signing = true;
    confirmBtn.disabled = true;
    cancelBtn.disabled = true;
    confirmLabel.textContent = mode === "buy" ? "Awaiting signature…" : "Signing offer…";
    spinner.hidden = false;

    // simulated wallet signature + confirmation
    setTimeout(() => {
      signing = false;
      confirmBtn.disabled = false;
      cancelBtn.disabled = false;
      spinner.hidden = true;
      confirmLabel.textContent = mode === "buy" ? "Approve in wallet" : "Sign offer";
      closeSheet();
      if (mode === "buy") {
        toast("Purchase confirmed · tx 0x8c2f…a90e (simulated)", "success");
      } else {
        toast(`Offer of ${parseFloat(offerInput.value).toFixed(2)} NOVA signed (simulated)`, "success");
      }
    }, 1800);
  });
})();