/* Coordinate Plane Geometry Game - Shared styles */
:root {
  --bg: #0f0f14;
  --surface: #1a1a24;
  --border: #2d2d3a;
  --text: #e8e6e3;
  --muted: #8b8b9a;
  --accent: #6c9ef8;
  --accent-dim: #4a7ad4;
  --correct: #4ade80;
  --wrong: #f87171;
  --grid-line: rgba(255,255,255,0.06);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 1.5rem;
}

.lang-switch-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  margin-bottom: 1rem;
}
.lang-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 0.25rem 0.5rem;
  font-size: 0.875rem;
  border-radius: 4px;
  cursor: pointer;
}
.lang-btn:hover, .lang-btn.active {
  color: var(--accent);
  border-color: var(--accent);
}
.lang-sep {
  color: var(--border);
  font-size: 0.875rem;
}

.name-entry {
  text-align: center;
  padding: 3rem 2rem;
  max-width: 360px;
  margin: 0 auto;
}

.name-entry h1 {
  margin: 0 0 0.5rem 0;
  font-size: 1.75rem;
  color: var(--text);
}

.name-entry-prompt {
  color: var(--muted);
  margin: 0 0 1.5rem 0;
  font-size: 1rem;
}

.name-entry-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
}

.name-entry-form input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
}

.name-entry-form input:focus {
  outline: none;
  border-color: var(--accent);
}

.name-entry-form button {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.name-entry-form button:hover {
  background: var(--accent-dim);
}

/* Player page - overhauled game header */
.game-header {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  gap: 0.5rem;
  align-items: start;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.game-title-wrap {
  grid-column: 1 / 2;
  grid-row: 1 / 3;
}

.game-header h1 {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 600;
}

.game-title-wrap .game-subtitle {
  margin: 0.25rem 0 0 0;
  font-size: 0.9rem;
  color: var(--muted);
  font-weight: normal;
}

/* Fix the language switcher positioning in header */
.lang-switch-wrap.header-lang {
  grid-column: 2 / 3;
  grid-row: 1 / 2;
  position: static;
  justify-self: end;
  margin: 0;
}

/* Pro game HUD panel for stats */
.game-stats {
  grid-column: 2 / 3;
  grid-row: 2 / 3;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  background: rgba(13, 17, 26, 0.7);
  border: 1px solid rgba(108, 158, 248, 0.3);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5), inset 0 0 10px rgba(108, 158, 248, 0.1);
  gap: 0.4rem;
}

.score-display {
  font-variant-numeric: tabular-nums;
  color: #4ade80;
  font-weight: 700;
  font-size: 1.05rem;
  text-shadow: 0 0 8px rgba(74, 222, 128, 0.4);
}

.pos-display {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.95rem;
  color: #60a5fa;
  background: rgba(96, 165, 250, 0.15);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-weight: 600;
}

.level-treasures {
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 500;
}

.turn-row {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  flex-wrap: nowrap;
}

.turn-phase-left {
  flex: 0 0 auto;
  min-width: 320px;
}

.turn-phase-right {
  flex: 0 0 320px;
  min-width: 280px;
  padding-left: 1rem;
  border-left: 1px solid var(--border);
}

.turn-phase-right .placeholder-prompt {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

.map-wrap {
  margin-bottom: 0;
  margin-top: 1rem;
}

.map-label {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.prompt-label {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

.rpg-card h2 {
  color: var(--accent);
}

.question-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.question-card h2 {
  margin: 0 0 0.75rem 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.rule-hint {
  font-size: 0.85rem;
  color: var(--accent);
  margin: 0 0 0.5rem 0;
  font-weight: 500;
}

.question-text {
  margin-bottom: 1rem;
  color: var(--muted);
}

.coord-grid {
  width: 420px;
  height: 420px;
  margin: 0 auto 1rem;
  background: #0d111a;
  border: 1px solid rgba(108, 158, 248, 0.4);
  border-radius: 12px;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: 0 0 30px rgba(108, 158, 248, 0.15), inset 0 0 20px rgba(0, 0, 0, 0.8);
}

.coord-grid canvas {
  display: block;
  width: 420px;
  height: 420px;
  border-radius: 10px;
}

.options-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem 0;
}

.move-options-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.options-list li {
  margin-bottom: 0.5rem;
}

.option-btn {
  display: block;
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.option-btn:hover:not(:disabled) {
  border-color: var(--accent);
  background: rgba(108, 158, 248, 0.08);
}

.option-btn:disabled {
  cursor: default;
  opacity: 0.8;
}

.option-btn.correct {
  border-color: var(--correct);
  background: rgba(74, 222, 128, 0.12);
}

.option-btn.wrong {
  border-color: var(--wrong);
  background: rgba(248, 113, 113, 0.12);
}

.input-answer {
  width: 100%;
  max-width: 200px;
  padding: 0.75rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 1rem;
}

.input-answer:focus {
  outline: none;
  border-color: var(--accent);
}

.input-answer.correct { border-color: var(--correct); }
.input-answer.wrong { border-color: var(--wrong); }

.submit-btn {
  padding: 0.6rem 1.2rem;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}


.submit-btn:hover:not(:disabled) {
  background: var(--accent-dim);
}

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.feedback {
  margin-top: 0.75rem;
  font-size: 0.95rem;
}

.feedback.correct { color: var(--correct); }
.feedback.wrong { color: var(--wrong); }

/* End screen */
.end-screen {
  text-align: center;
  padding: 2rem 0;
}

.end-screen h2 {
  margin-bottom: 0.5rem;
}

.end-screen .final-score {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.name-input-form {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.name-input-form input {
  padding: 0.6rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-size: 1rem;
  min-width: 160px;
}

.name-input-form button {
  padding: 0.6rem 1.2rem;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
}

.name-input-form button:hover {
  background: var(--accent-dim);
}

/* Rank page */
.rank-header {
  text-align: center;
  margin-bottom: 2rem;
}

.rank-header h1 {
  margin: 0 0 0.5rem 0;
  font-size: 1.5rem;
}

.rank-header p {
  margin: 0;
  color: var(--muted);
}

.rank-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.rank-table th,
.rank-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.rank-table th {
  background: var(--bg);
  font-weight: 600;
  color: var(--muted);
  font-size: 0.85rem;
}

.rank-table tr:last-child td {
  border-bottom: none;
}

.rank-table tr:hover td {
  background: rgba(255,255,255,0.02);
}

.rank-table .rank-num {
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  width: 3rem;
}

.rank-table .score-cell {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--accent);
}

.rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.9rem;
  height: 1.9rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  color: #0b1120;
  box-shadow: 0 0 0 1px rgba(15,23,42,0.6), 0 8px 16px rgba(0,0,0,0.45);
}

.rank-first {
  background: radial-gradient(circle at 30% 0%, #fef9c3 0%, #eab308 40%, #92400e 100%);
}

.rank-second {
  background: radial-gradient(circle at 30% 0%, #e5e7eb 0%, #9ca3af 45%, #4b5563 100%);
}

.rank-third {
  background: radial-gradient(circle at 30% 0%, #fed7aa 0%, #f97316 45%, #7c2d12 100%);
}

.empty-rank {
  text-align: center;
  padding: 3rem;
  color: var(--muted);
}

.rank-error-hint {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.875rem;
  opacity: 0.9;
}

.danger-btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: #b91c1c;
  color: #fef2f2;
  border: none;
  border-radius: 999px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease, box-shadow 0.1s ease;
}

.danger-btn:hover {
  background: #dc2626;
  box-shadow: 0 0 0 1px rgba(248, 113, 113, 0.4);
}

.danger-btn:active {
  transform: translateY(1px);
  box-shadow: none;
}

.nav-links {
  margin-top: 1.5rem;
  text-align: center;
}

.nav-links a {
  margin: 0 0.5rem;
}

@keyframes option-penalty-shake {
  0% { transform: translateX(0); }
  20% { transform: translateX(-4px); }
  40% { transform: translateX(4px); }
  60% { transform: translateX(-3px); }
  80% { transform: translateX(3px); }
  100% { transform: translateX(0); }
}

.option-btn-penalty {
  animation: option-penalty-shake 0.6s ease;
  box-shadow: 0 0 0 1px rgba(248, 113, 113, 0.6);
}