:root {
  --bg: #0f1115;
  --bg-elev: #171a21;
  --bg-elev-2: #1e222b;
  --border: #2a2f3a;
  --text: #e7e9ee;
  --text-dim: #9aa2b1;
  --accent: #4c8dff;
  --accent-soft: rgba(76, 141, 255, 0.16);
  --ok: #3ddc84;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7f9;
    --bg-elev: #ffffff;
    --bg-elev-2: #f0f2f5;
    --border: #e2e5ea;
    --text: #1a1d23;
    --text-dim: #626b7a;
    --accent: #2563eb;
    --accent-soft: rgba(37, 99, 235, 0.12);
    --ok: #16a34a;
    --shadow: 0 6px 24px rgba(15, 23, 42, 0.10);
    color-scheme: light;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.wrap {
  width: min(1200px, 100% - 2rem);
  margin-inline: auto;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 1.5rem 0 1rem;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-title {
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.site-sub {
  margin: 0.25rem 0 1rem;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.search-bar {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 0.85rem;
  width: 18px;
  height: 18px;
  fill: var(--text-dim);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 0.75rem 2.75rem 0.75rem 2.6rem;
  font-size: 1rem;
  color: var(--text);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.search-input::placeholder { color: var(--text-dim); }

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.search-clear {
  position: absolute;
  right: 0.5rem;
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  line-height: 1;
  color: var(--text-dim);
  background: transparent;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}

.search-clear:hover { color: var(--text); background: var(--bg-elev-2); }

.meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.65rem;
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* ---------- Grid ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 1rem;
  padding: 1.5rem 0 3rem;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
  text-align: left;
  color: inherit;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform 0.12s ease, border-color 0.12s ease, box-shadow 0.12s ease;
}

.card:hover,
.card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
  outline: none;
}

.card:active { transform: translateY(0); }

.thumb {
  position: relative;
  aspect-ratio: 4 / 3;
  background:
    linear-gradient(45deg, var(--bg-elev-2) 25%, transparent 25%) 0 0 / 16px 16px,
    linear-gradient(-45deg, var(--bg-elev-2) 25%, transparent 25%) 0 8px / 16px 16px,
    linear-gradient(45deg, transparent 75%, var(--bg-elev-2) 75%) 8px -8px / 16px 16px,
    linear-gradient(-45deg, transparent 75%, var(--bg-elev-2) 75%) -8px 0 / 16px 16px;
  overflow: hidden;
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.card-name {
  padding: 0.6rem 0.7rem;
  font-size: 0.82rem;
  line-height: 1.35;
  word-break: break-all;
  border-top: 1px solid var(--border);
}

.card-name mark {
  padding: 0 1px;
  color: inherit;
  background: var(--accent-soft);
  border-radius: 3px;
}

.copy-badge {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.5rem;
  font-size: 0.72rem;
  color: var(--text);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border: 1px solid var(--border);
  border-radius: 999px;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.12s, transform 0.12s;
  pointer-events: none;
}

.card:hover .copy-badge,
.card:focus-visible .copy-badge {
  opacity: 1;
  transform: translateY(0);
}

.card.copied .copy-badge {
  opacity: 1;
  transform: translateY(0);
  color: var(--ok);
  border-color: var(--ok);
}

/* ---------- States ---------- */

.loading,
.empty {
  padding: 3rem 1rem;
  text-align: center;
  color: var(--text-dim);
}

.empty-title {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  color: var(--text);
}

.empty-hint { margin: 0; font-size: 0.88rem; }

.empty-hint code {
  padding: 0.1rem 0.35rem;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-radius: 5px;
  font-size: 0.85em;
}

/* ---------- Toast ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  z-index: 50;
  max-width: min(560px, calc(100vw - 2rem));
  padding: 0.7rem 1rem;
  color: var(--text);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transform: translate(-50%, 1rem);
  opacity: 0;
  transition: opacity 0.18s, transform 0.18s;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.toast.error { border-color: #e5484d; }

.toast-url {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.78rem;
  color: var(--text-dim);
  word-break: break-all;
}

@media (max-width: 480px) {
  .grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
  .site-title { font-size: 1.25rem; }
}