/* HanGuldle Learn Pages — Common Styles (v2) */

/* === Color Variables === */
:root {
  --bg: #ffffff;
  --text: #1f2937;
  --muted: #4b5563;
  --border: #e2e8f0;
  --correct: #16a34a;
  --present: #ca8a04;
  --absent: #6b7280;
  --card-bg: #f8fafc;
}
.dark {
  --bg: #0f172a;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --border: #334155;
  --correct: #22c55e;
  --present: #eab308;
  --absent: #64748b;
  --card-bg: #1e293b;
}

/* === Reset === */
* { margin: 0; padding: 0; box-sizing: border-box; }

/* === Body === */
body {
  font-family: 'Inter', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px 48px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  transition: background 0.2s, color 0.2s;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
/* Wide container for table-heavy pages (DB, vocabulary) */
body.wide { max-width: 960px; }

/* === Mobile Responsive === */
@media (max-width: 640px) {
  body { padding: 0 12px 40px; }
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.15rem; padding-left: 12px; }
  h3 { font-size: 1rem; }
  p, ul, ol, li { font-size: 0.9rem; }
  .subtitle { font-size: 0.9rem; }
  .learn-nav { gap: 5px; padding: 10px 0; margin-bottom: 24px; }
  .learn-nav a { padding: 5px 10px; font-size: 0.75rem; }
  .breakdown { gap: 8px; }
  .breakdown-item { padding: 12px 8px; min-width: 60px; }
  .breakdown-char { font-size: 1.6rem; }
  .card { padding: 16px; }
  .cta-card { padding: 20px; }
  .meta-tags { gap: 5px; }
  .meta-tag { font-size: 0.72rem; padding: 3px 8px; }
  thead th { padding: 8px 10px; font-size: 0.75rem; }
  tbody td { padding: 8px 10px; font-size: 0.82rem; }
  .cast-grid, .related-grid { grid-template-columns: 1fr; gap: 8px; }
  footer { font-size: 0.75rem; margin-top: 40px; }
  footer a { margin: 0 4px; }
}

/* === Header === */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}
.logo {
  font-family: 'Outfit', sans-serif;
  font-weight: 900;
  font-size: 1.4rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}
.logo-h {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px; height: 30px;
  border-radius: 6px;
  color: #fff;
  font-size: 1.7rem;
  font-weight: 900;
  margin-right: 3px;
  background: var(--correct);
  text-shadow: -1px -1px 0 #000, 1px -1px 0 #000, -1px 1px 0 #000, 1px 1px 0 #000;
}
.logo-text { position: relative; top: 2px; }
.c-correct { color: var(--correct); }
.c-present { color: var(--present); }
.c-fade { color: var(--muted); }
.styled-name { font-family: 'Outfit', sans-serif; font-weight: 700; }
.toggle-btn {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 5px 12px;
  font-size: 0.85rem;
  cursor: pointer;
  color: var(--text);
  font-weight: 600;
  transition: all 0.2s;
}
.toggle-btn:hover { border-color: var(--correct); background: var(--bg); }

/* === Learn Navigation === */
.learn-nav {
  display: flex;
  gap: 6px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 36px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.learn-nav a {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border);
  white-space: nowrap;
  transition: all 0.2s;
}
.learn-nav a:hover {
  border-color: var(--correct);
  color: var(--correct);
  background: rgba(22, 163, 74, 0.05);
}
.learn-nav a.active {
  background: var(--correct);
  color: #fff;
  border-color: var(--correct);
}

/* === Typography === */
h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
  line-height: 1.3;
}
h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 40px 0 16px;
  padding: 0 0 0 14px;
  border-left: 4px solid var(--correct);
  border-bottom: none;
  display: block;
  line-height: 1.4;
}
h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 28px 0 10px;
  color: var(--text);
}
p {
  margin-bottom: 16px;
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.75;
}
ul, ol {
  margin: 0 0 16px 24px;
  font-size: 0.95rem;
  color: var(--text);
}
li { margin-bottom: 8px; line-height: 1.7; }
.subtitle {
  font-size: 1rem;
  color: var(--muted);
  margin-bottom: 28px;
  line-height: 1.6;
}
a { color: var(--correct); }

/* === Meta Tags === */
.meta-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.meta-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--muted);
}

/* === Cards === */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  margin-bottom: 16px;
  transition: box-shadow 0.2s;
}
.card:hover { box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.dark .card:hover { box-shadow: 0 2px 12px rgba(0,0,0,0.3); }
.card h3 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }

/* === Tables === */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 16px 0 24px;
  border-radius: 10px;
  border: 1px solid var(--border);
}
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
thead th {
  background: var(--correct);
  color: #fff;
  padding: 11px 14px;
  text-align: left;
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
tbody td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:nth-child(even) { background: var(--card-bg); }
.kor { font-size: 1.1em; font-weight: 700; }

/* === Title Breakdown === */
.breakdown { display: flex; flex-wrap: wrap; gap: 12px; margin: 16px 0 24px; }
.breakdown-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  text-align: center;
  min-width: 80px;
  flex: 1;
  transition: box-shadow 0.2s;
}
.breakdown-item:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.breakdown-char { font-size: 2.2rem; font-weight: 900; line-height: 1.2; }
.breakdown-rom { font-size: 0.8rem; color: var(--muted); margin-top: 4px; }
.breakdown-mean { font-size: 0.85rem; font-weight: 600; margin-top: 6px; color: var(--correct); }

/* === Embeds === */
.spotify-embed, .youtube-embed { margin: 24px 0; border-radius: 12px; overflow: hidden; }

/* === Cast Grid === */
.cast-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 16px 0; }
.cast-card {
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  transition: box-shadow 0.2s;
}
.cast-card:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.cast-card .name-kr { font-weight: 700; font-size: 1rem; }
.cast-card .name-en { font-size: 0.8rem; color: var(--muted); margin-top: 2px; }

/* === Related Grid === */
.related-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 16px 0; }
.related-card {
  display: block;
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.related-card:hover { border-color: var(--correct); box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.related-card .title { font-weight: 700; font-size: 0.95rem; color: var(--text); }
.related-card .info, .related-card .artist { font-size: 0.8rem; color: var(--muted); margin-top: 2px; }

/* === CTA Card === */
.cta-card {
  background: var(--card-bg);
  border: 2px solid var(--correct);
  border-radius: 12px;
  padding: 28px;
  margin: 20px 0;
  text-align: center;
}
.cta-card h3 { margin-top: 0; color: var(--correct); }
.cta-btn {
  display: inline-block;
  padding: 12px 28px;
  background: var(--correct);
  color: #fff;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  transition: opacity 0.2s, transform 0.1s;
}
.cta-btn:hover { opacity: 0.9; transform: translateY(-1px); }

/* === Back Link === */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--correct);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  margin-top: 36px;
}
.back-link:hover { text-decoration: underline; }

/* === Footer === */
footer {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.82rem;
  color: var(--muted);
}
footer a { color: var(--muted); text-decoration: none; margin: 0 8px; transition: color 0.2s; }
footer a:hover { color: var(--correct); }
footer p { font-size: 0.82rem; margin-top: 8px; }

/* === DB / Vocabulary page extras === */
.search-box {
  width: 100%;
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text);
  background: var(--bg);
  margin-bottom: 16px;
  transition: border-color 0.2s;
}
.search-box:focus { outline: none; border-color: var(--correct); }
.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  align-items: center;
}
.filter-bar label { font-size: 0.85rem; font-weight: 600; color: var(--muted); }
.filter-bar select {
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
  font-family: inherit;
  color: var(--text);
  background: var(--bg);
  cursor: pointer;
}
.filter-bar select:focus { outline: none; border-color: var(--correct); }
.stats {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.stat {
  flex: 1;
  min-width: 80px;
  text-align: center;
  padding: 12px;
  border-radius: 10px;
  background: var(--card-bg);
  border: 1px solid var(--border);
}
.stat-num { font-size: 1.5rem; font-weight: 800; color: var(--correct); }
.stat-label { font-size: 0.75rem; color: var(--muted); margin-top: 2px; }
.section-sub { font-size: 0.9rem; color: var(--muted); margin-bottom: 8px; }
.cat-header td {
  background: var(--card-bg);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--correct);
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
}
.vocab-cell { font-size: 0.8rem; color: var(--muted); line-height: 1.5; max-width: 260px; }
.genre-stats { font-size: 0.85rem; color: var(--muted); margin-bottom: 16px; }
.kr { font-weight: 700; }

@media (max-width: 640px) {
  .stats { gap: 6px; }
  .stat { padding: 8px 6px; min-width: 60px; }
  .stat-num { font-size: 1.2rem; }
  .stat-label { font-size: 0.68rem; }
  .filter-bar { gap: 6px; }
  .filter-bar select { font-size: 0.8rem; padding: 5px 8px; }
  .vocab-cell { max-width: 160px; font-size: 0.72rem; }
}