/* ===== Reuse base variables from main site ===== */
:root {
  --color-bg: #f5f2eb;
  --color-bg-secondary: #eae6db;
  --color-surface: #ffffff;
  --color-text: #3a3a2e;
  --color-text-secondary: #6b6b5a;
  --color-olive: #7a8450;
  --color-olive-light: #a3ad7a;
  --color-olive-dark: #5c6339;
  --color-purple: #9b6bb0;
  --color-purple-light: #c9a5d9;
  --color-purple-bg: #f3ecf7;
  --color-cream: #faf6e9;
  --color-yellow: #f0e5b0;
  --color-yellow-light: #fdf8e0;
  --color-warm: #e8d5b0;
  --color-border: #d9d4c8;
  --color-shadow: rgba(90, 85, 70, 0.08);
  --color-shadow-heavy: rgba(90, 85, 70, 0.15);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --transition: 0.3s ease;
}

[data-theme="dark"] {
  --color-bg: #1a1a1e;
  --color-bg-secondary: #242428;
  --color-surface: #2a2a30;
  --color-text: #e8e6df;
  --color-text-secondary: #a0a097;
  --color-olive: #a3ad7a;
  --color-olive-light: #7a8450;
  --color-olive-dark: #c4ce9e;
  --color-purple: #c9a5d9;
  --color-purple-light: #9b6bb0;
  --color-purple-bg: #2d2535;
  --color-cream: #2a2822;
  --color-yellow: #8a7d4a;
  --color-yellow-light: #33302a;
  --color-warm: #3d3828;
  --color-border: #3d3d42;
  --color-shadow: rgba(0, 0, 0, 0.2);
  --color-shadow-heavy: rgba(0, 0, 0, 0.35);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color var(--transition), color var(--transition);
}

/* Header */
.header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  background: linear-gradient(135deg, #5b8a72 0%, #3d6b5e 50%, #2a5548 100%);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}

.nav-btn-header {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.15);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: all 0.3s ease;
  color: #fff;
}

.nav-btn-header:hover { transform: scale(1.1); background: rgba(255,255,255,0.25); }

.header-text { flex: 1; min-width: 0; }
.header-title { font-size: 1.1rem; font-weight: 800; text-shadow: 0 1px 4px rgba(0,0,0,0.15); }
.header-greeting { font-size: 0.78rem; opacity: 0.9; font-weight: 600; }

.dark-toggle {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.15);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: all var(--transition);
}

.dark-toggle:hover { transform: scale(1.1); background: rgba(255,255,255,0.25); }

/* Container */
.container { max-width: 720px; margin: 0 auto; padding: 24px 16px; }

/* Sections */
.section {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  margin-bottom: 20px;
  box-shadow: 0 2px 16px var(--color-shadow);
  transition: background-color var(--transition);
}

.section-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--color-olive-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}

[data-theme="dark"] .section-title { color: var(--color-olive-light); }
.section-icon { font-size: 1.3rem; }

/* Player Selection */
.player-btns {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.player-btn {
  padding: 12px 24px;
  border-radius: 50px;
  border: 2px solid var(--color-border);
  background: var(--color-bg-secondary);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s ease;
  font-family: inherit;
  color: var(--color-text);
}

.player-btn:hover { border-color: var(--color-purple); transform: scale(1.05); }
.player-btn.active { background: var(--color-purple); color: #fff; border-color: var(--color-purple); }

.attempts-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
  padding: 12px 16px;
  background: var(--color-yellow-light);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.attempts-label { font-size: 0.85rem; color: var(--color-text-secondary); font-weight: 600; }
.attempts-count { font-size: 1.3rem; font-weight: 800; color: var(--color-olive-dark); }
[data-theme="dark"] .attempts-count { color: var(--color-olive); }
.attempts-bonus { font-size: 0.75rem; color: var(--color-text-secondary); }

/* Puzzle Grid */
.puzzle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.puzzle-card {
  padding: 20px 16px;
  border-radius: var(--radius);
  border: 2px solid var(--color-border);
  background: var(--color-cream);
  cursor: pointer;
  transition: all 0.25s ease;
  text-align: center;
  position: relative;
}

.puzzle-card:hover { border-color: var(--color-purple); transform: translateY(-3px); box-shadow: 0 6px 20px var(--color-shadow-heavy); }
.puzzle-card.solved { border-color: #27ae60; background: #d4edda; }
[data-theme="dark"] .puzzle-card.solved { background: #1e3a2a; border-color: #27ae60; }
.puzzle-card.in-progress { border-color: var(--color-olive); }

.puzzle-card-title { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.puzzle-card-difficulty { font-size: 0.8rem; color: var(--color-text-secondary); }
.puzzle-card-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 700;
}

.puzzle-card-badge.solved-badge { background: #27ae60; color: #fff; }
.puzzle-card-badge.progress-badge { background: var(--color-olive); color: #fff; }

/* Game Section */
.back-btn {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: 16px;
  font-family: inherit;
  transition: color var(--transition);
}

.back-btn:hover { color: var(--color-purple); }

.puzzle-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.puzzle-title { font-size: 1.2rem; font-weight: 800; color: var(--color-text); flex: 1; }
.puzzle-difficulty { font-size: 0.85rem; color: var(--color-text-secondary); }

.puzzle-question {
  padding: 20px;
  background: linear-gradient(135deg, var(--color-yellow-light), var(--color-cream));
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 20px;
  font-weight: 500;
}

/* Game Status */
.game-status {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}

.status-item {
  flex: 1;
  text-align: center;
  padding: 12px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.status-label { display: block; font-size: 0.75rem; color: var(--color-text-secondary); font-weight: 600; }
.status-value { display: block; font-size: 1.4rem; font-weight: 800; color: var(--color-olive-dark); margin-top: 4px; }
[data-theme="dark"] .status-value { color: var(--color-olive); }

/* History */
.history-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
  max-height: 400px;
  overflow-y: auto;
}

.history-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  animation: fadeUp 0.3s ease;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.history-signal { font-size: 1.5rem; flex-shrink: 0; }
.history-content { flex: 1; min-width: 0; }
.history-type { font-size: 0.7rem; color: var(--color-text-secondary); font-weight: 600; text-transform: uppercase; display: flex; align-items: center; gap: 6px; }
.history-player { font-size: 0.75rem; font-weight: 700; color: var(--color-purple); text-transform: none; }
.history-text { font-size: 0.9rem; color: var(--color-text); margin-top: 2px; word-break: break-word; }

.history-item.guess-correct {
  background: #d4edda;
  border-color: #27ae60;
}

[data-theme="dark"] .history-item.guess-correct {
  background: #1e3a2a;
  border-color: #27ae60;
}

.history-item.guess-wrong {
  background: #f8d7da;
  border-color: #e74c3c;
}

[data-theme="dark"] .history-item.guess-wrong {
  background: #3a1e1e;
  border-color: #e74c3c;
}

/* Input */
.input-area { margin-bottom: 20px; }

.input-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 10px;
}

.input-tab {
  flex: 1;
  padding: 10px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  background: var(--color-bg-secondary);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  color: var(--color-text-secondary);
  transition: all var(--transition);
}

.input-tab.active {
  background: var(--color-surface);
  border-bottom-color: var(--color-surface);
  color: var(--color-purple);
  border-color: var(--color-purple);
  border-bottom-color: var(--color-surface);
}

.input-row {
  display: flex;
  gap: 8px;
}

.input-text {
  flex: 1;
  padding: 12px 16px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  background: var(--color-bg-secondary);
  color: var(--color-text);
  font-family: inherit;
  transition: border-color var(--transition);
}

.input-text:focus { outline: none; border-color: var(--color-purple); }

.input-submit {
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-purple), #5b8a72);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: all var(--transition);
  white-space: nowrap;
}

.input-submit:hover { transform: scale(1.05); }
.input-submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.input-hint {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin-top: 8px;
  text-align: center;
}

/* Solved */
.solved-area {
  text-align: center;
  padding: 24px;
  background: linear-gradient(135deg, #d4edda, #c3e6cb);
  border-radius: var(--radius);
  border: 2px solid #27ae60;
  animation: fadeUp 0.5s ease;
}

[data-theme="dark"] .solved-area {
  background: linear-gradient(135deg, #1e3a2a, #2a4a3a);
}

.solved-badge {
  font-size: 1.5rem;
  font-weight: 800;
  color: #155724;
  margin-bottom: 12px;
}

[data-theme="dark"] .solved-badge { color: #6ddb8e; }

.solved-answer {
  font-size: 0.95rem;
  color: #155724;
  line-height: 1.7;
  text-align: left;
  padding: 16px;
  background: rgba(255,255,255,0.5);
  border-radius: var(--radius-sm);
}

[data-theme="dark"] .solved-answer { color: #b8e8c8; background: rgba(0,0,0,0.2); }

/* Rules */
.rules-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rules-list li {
  font-size: 0.9rem;
  line-height: 1.5;
  padding: 8px 12px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-sm);
}

.rules-list a {
  color: var(--color-purple);
  text-decoration: underline;
}

/* Footer */
.footer {
  text-align: center;
  padding: 24px 16px;
  color: var(--color-text-secondary);
  font-size: 0.8rem;
}

.paw-divider { font-size: 1.2rem; margin-bottom: 8px; letter-spacing: 8px; }

/* Loading spinner */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-purple);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.weekly-hint {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  text-align: center;
  margin: -12px 0 16px;
}

/* Mobile */
@media (max-width: 480px) {
  .puzzle-grid { grid-template-columns: 1fr; }
  .section { padding: 20px 16px; }
  .puzzle-question { font-size: 0.95rem; padding: 16px; }
}

/* Solvers Leaderboard */
.solver-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--color-card-bg, #f8f7f4);
  margin-bottom: 6px;
  font-size: 1rem;
  color: var(--color-text, #2d2d2d);
}
.solver-medal { font-size: 1.3rem; }
.solver-name { font-weight: 600; flex: 1; color: var(--color-text, #2d2d2d); }
.solver-count { color: var(--color-text-secondary, #888); font-size: 0.85rem; }
.solver-detail-title { font-weight: 700; margin: 14px 0 6px; font-size: 0.9rem; color: var(--color-text, #2d2d2d); }
.solver-detail { font-size: 0.82rem; color: var(--color-text-secondary, #aaa); padding: 4px 0; border-bottom: 1px solid var(--color-border, #eee); }