:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1e222b;
  --fg: #e6e8ec;
  --muted: #8a93a6;
  --accent: #c5a3ff;
  --border: #272b35;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", "Yu Mincho", serif;
  font-size: 15px;
  line-height: 1.6;
}

header {
  padding: 28px 32px 12px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border);
}
header h1 {
  margin: 0;
  font-size: 28px;
  font-weight: 500;
  letter-spacing: 0.08em;
}
header #subtitle {
  grid-column: 1 / 2;
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
}
.lang-switch {
  grid-column: 2 / 3;
  grid-row: 1 / 3;
  display: flex;
  align-items: center;
  gap: 6px;
}

main {
  padding: 28px 32px 48px;
  max-width: 1400px;
  margin: 0 auto;
}

.controls {
  margin-bottom: 24px;
}

#search-input {
  width: 100%;
  padding: 12px 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--fg);
  font-size: 14px;
  font-family: inherit;
  margin-bottom: 16px;
}
#search-input:focus { outline: none; border-color: var(--accent); }

.category-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
#category-label {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.categories {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.category-btn {
  padding: 6px 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
}
.category-btn:hover {
  color: var(--fg);
  border-color: var(--accent);
}
.category-btn.active {
  background: var(--accent);
  color: #1c1c1c;
  border-color: var(--accent);
  font-weight: 600;
}

label {
  display: inline;
  color: var(--muted);
  font-size: 12px;
}
select {
  padding: 8px 10px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--fg);
  font-size: 13px;
  font-family: inherit;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}

.color-card {
  aspect-ratio: 3 / 4;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 14px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.15s ease;
  font-family: inherit;
  text-align: left;
}
.color-card:hover {
  transform: translateY(-2px);
}

.color-name {
  font-size: 24px;
  font-weight: 500;
  letter-spacing: 0.04em;
}
.color-reading {
  font-size: 12px;
  opacity: 0.8;
  margin-top: 2px;
}
.color-hex {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  margin-top: auto;
  font-weight: 600;
}
.color-note {
  font-size: 10px;
  opacity: 0.7;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 4px;
}

.empty {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--muted);
  padding: 48px 0;
  font-style: italic;
}

footer {
  padding: 28px 32px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
  text-align: center;
  margin-top: 40px;
}