:root {
  --bg: #101012;
  --card-bg: #1b1b1f;
  --accent: #ff3b3b;
  --text: #f5f5f5;
  --text-dim: #a3a3a8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  padding: 2rem 1.5rem 1rem;
  text-align: center;
}

header h1 {
  margin: 0;
  font-weight: 900;
  letter-spacing: 0.02em;
}

#search {
  width: 100%;
  max-width: 480px;
  display: block;
  margin: 1.5rem auto;
  padding: 0.9rem 1.1rem;
  font-size: 1rem;
  border-radius: 999px;
  border: 1px solid #333;
  background: var(--card-bg);
  color: var(--text);
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
}

#results {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.word-card {
  display: block;
  background: var(--card-bg);
  border-radius: 12px;
  padding: 1.25rem;
  text-decoration: none;
  color: var(--text);
  border: 1px solid #2a2a2e;
  transition: border-color 0.15s ease;
}

.word-card:hover {
  border-color: var(--accent);
}

.word-card .card-word {
  font-weight: 900;
  font-size: 1.15rem;
  letter-spacing: 0.03em;
}

.word-card .card-meta {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin: 0.35rem 0;
}

.word-card .card-def {
  font-size: 0.9rem;
  color: var(--text-dim);
}

/* Word detail page: 5-layer hierarchy */
.word-detail {
  max-width: 640px;
  margin: 2rem auto;
  background: var(--card-bg);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid #2a2a2e;
}

.layer-word {
  padding: 2rem 1.5rem 0.25rem;
  text-align: center;
  font-weight: 900;
  font-size: 2.25rem;
  letter-spacing: 0.03em;
}

.layer-metadata {
  text-align: center;
  color: var(--text-dim);
  font-style: italic;
  padding-bottom: 1.25rem;
}

.layer-standard-def {
  padding: 0 1.75rem 1.25rem;
  line-height: 1.5;
}

.layer-image {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: #26262b;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: 0.85rem;
  text-align: center;
  padding: 1rem;
}

.layer-raw-def {
  padding: 1.5rem 1.75rem 2rem;
  font-weight: 700;
  border-top: 3px solid var(--accent);
  line-height: 1.5;
}

.back-link {
  display: inline-block;
  margin: 1.5rem;
  color: var(--text-dim);
  text-decoration: none;
}

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

.state-message {
  text-align: center;
  color: var(--text-dim);
  padding: 3rem 1rem;
}