:root {
  --bg-color: #060811;
  --card-bg: #161b22;
  --card-border: #30363d;
  --accent: #58a6ff;
  --accent2: #a371f7;
  --accent-glow: rgba(88, 166, 255, 0.45);
  --text-main: #e6edf3;
  --text-dim: #8b949e;
}

* {
  box-sizing: border-box;
}

html {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--bg-color);
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  overflow-x: hidden;
  position: relative;
  background:
    radial-gradient(circle 450px at 30% 35%, rgba(88, 166, 255, 0.4) 0%, transparent 100%),
    radial-gradient(circle 450px at 75% 30%, rgba(163, 113, 247, 0.35) 0%, transparent 100%),
    radial-gradient(circle 400px at 50% 100%, rgba(56, 217, 200, 0.22) 0%, transparent 100%),
    radial-gradient(circle 350px at 90% 5%, rgba(88, 166, 255, 0.2) 0%, transparent 100%),
    var(--bg-color);
  background-attachment: fixed;
}

#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.site-header,
.cards,
.site-footer {
  position: relative;
  z-index: 1;
}

.site-header {
  text-align: center;
  padding: 64px 24px 32px;
}

.brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 32px;
  font-weight: 700;
}

.brand-icon {
  color: var(--accent);
}

.brand-name {
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent2) 60%, #38d9c8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.tagline {
  margin-top: 12px;
  color: var(--text-dim);
  font-size: 15px;
}

.cards {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
  padding: 24px;
  max-width: 960px;
  margin: 0 auto;
}

.card {
  position: relative;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.03));
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 16px;
  padding: 36px 32px 32px;
  width: 360px;
  text-align: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(88, 166, 255, 0.5), rgba(163, 113, 247, 0.2), transparent 70%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 0 32px var(--accent-glow), 0 12px 24px rgba(0, 0, 0, 0.35);
}

.card-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  transition: filter 0.25s ease, color 0.25s ease;
}

.card-icon svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
}

.card:hover .card-icon {
  filter: drop-shadow(0 0 10px var(--accent-glow));
}

#card-win .card-icon {
  color: var(--accent2);
}

#card-win.card:hover .card-icon {
  filter: drop-shadow(0 0 10px rgba(163, 113, 247, 0.5));
}

.card-title {
  margin: 0 0 4px;
  font-size: 22px;
  font-weight: 700;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.card-arch {
  margin: 0 0 20px;
  color: var(--text-dim);
  font-size: 13px;
}

.card-body {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.loading-text,
.empty-text {
  color: var(--text-dim);
  font-size: 14px;
}

.download-btn {
  display: block;
  width: 100%;
  padding: 14px 24px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent) 0%, #4c8cf5 100%);
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.3px;
  box-shadow: 0 4px 16px rgba(88, 166, 255, 0.25);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.download-btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.08);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.download-btn:active {
  transform: translateY(0);
}

#card-win .download-btn {
  background: linear-gradient(135deg, var(--accent2) 0%, #8b5cf6 100%);
  box-shadow: 0 4px 16px rgba(163, 113, 247, 0.25);
}

#card-win .download-btn:hover {
  box-shadow: 0 6px 20px rgba(163, 113, 247, 0.45);
}

.tech-details {
  text-align: left;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 12px;
}

.tech-details summary {
  cursor: pointer;
  font-size: 12px;
  color: var(--text-dim);
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  user-select: none;
  transition: color 0.2s ease;
}

.tech-details summary::-webkit-details-marker {
  display: none;
}

.tech-details summary::before {
  content: '▸';
  font-size: 10px;
  transition: transform 0.2s ease;
  display: inline-block;
}

.tech-details[open] summary::before {
  transform: rotate(90deg);
}

.tech-details summary:hover {
  color: var(--accent);
}

.tech-details[open] {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.meta-row {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-dim);
  padding: 0 4px;
}

.sha-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10.5px;
  color: var(--text-dim);
  word-break: break-all;
  text-align: left;
  padding: 0 4px;
}

.sha-value {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-dim);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 11px;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

.site-footer {
  text-align: center;
  padding: 32px;
  color: var(--text-dim);
  font-size: 12px;
}

@media (max-width: 720px) {
  .cards {
    flex-direction: column;
    align-items: center;
    padding: 16px;
  }

  .card {
    width: 100%;
    max-width: 360px;
  }

  .site-header {
    padding: 40px 16px 24px;
  }

  .brand {
    font-size: 26px;
  }
}