/* style.css — Chaos Chess dark theme */

:root {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-card: #0f3460;
  --bg-surface: #1a1a3e;
  --text-primary: #e4e4e4;
  --text-secondary: #a0a0b0;
  --accent: #e94560;
  --accent-gold: #daa520;
  --accent-blue: #4488ff;
  --accent-green: #44cc66;
  --white-player: #f0f0f0;
  --black-player: #b0b0b0;
  --border: #2a2a4e;
  --shadow: rgba(0, 0, 0, 0.4);
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
}

/* Screens */
.screen {
  display: none;
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  overflow-y: auto;
}

.screen.active {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* =================== MAIN MENU =================== */
.menu-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100%;
  padding: 2rem;
  gap: 1.5rem;
}

.game-title {
  font-size: 3rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--accent-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-align: center;
  letter-spacing: 2px;
}

.game-subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-top: -0.5rem;
  text-align: center;
}

.menu-options {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: 100%;
  max-width: 320px;
  margin-top: 1rem;
}

.timer-selector {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 100%;
}

.timer-selector label {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.timer-selector select {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 1rem;
  font-size: 1rem;
  cursor: pointer;
  outline: none;
}

.timer-selector select:focus {
  border-color: var(--accent);
}

.btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 0.8rem 2rem;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.2s;
  text-align: center;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--shadow);
}

.btn:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.btn-danger {
  background: #993333;
}

/* =================== GAME SCREEN =================== */
.game-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 800px;
  padding: 0.5rem;
  gap: 0.5rem;
  height: 100%;
  overflow-y: auto;
}

/* Player panel (items, captured, timer) */
.player-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 540px;
  padding: 0.4rem 0.8rem;
  background: var(--bg-secondary);
  border-radius: 8px;
  border: 1px solid var(--border);
  gap: 0.5rem;
  min-height: 50px;
}

.player-panel.black {
  flex-direction: row;
}

.player-panel.white {
  flex-direction: row;
}

.player-label {
  font-weight: 700;
  font-size: 0.85rem;
  min-width: 50px;
}

.player-label.white { color: var(--white-player); }
.player-label.black { color: var(--black-player); }

.player-items {
  display: flex;
  gap: 0.4rem;
  flex-shrink: 0;
}

.item-slot {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.2rem 0.5rem;
  min-width: 60px;
  height: 34px;
  font-size: 0.8rem;
  cursor: default;
  transition: border-color 0.2s, background 0.2s;
}

.item-slot.usable {
  cursor: pointer;
  border-color: var(--accent-blue);
}

.item-slot.usable:hover {
  background: rgba(68, 136, 255, 0.15);
  border-color: var(--accent);
}

.item-emoji {
  font-size: 1.1rem;
}

.item-emoji.empty {
  color: var(--text-secondary);
}

.item-name {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.player-timer {
  font-family: monospace;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-green);
  min-width: 40px;
  text-align: center;
}

.player-timer.low-time {
  color: var(--accent);
  animation: pulse-timer 0.5s ease-in-out infinite;
}

@keyframes pulse-timer {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.captured-pieces {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  font-size: 0.9rem;
  min-height: 1rem;
  flex: 1;
  justify-content: center;
}

.captured-piece {
  opacity: 0.7;
}

/* Board container */
.board-container {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  min-height: 340px;
  max-width: 680px;
  aspect-ratio: 1 / 1;
  margin: 0 auto;
}

#game-canvas {
  cursor: pointer;
  border-radius: 4px;
}

/* Status area */
.status-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  width: 100%;
  max-width: 540px;
}

.turn-indicator {
  font-size: 1rem;
  font-weight: 700;
  padding: 0.3rem 1rem;
  border-radius: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
}

.turn-indicator.white { border-left: 4px solid var(--white-player); }
.turn-indicator.black { border-left: 4px solid var(--black-player); }

.status-text {
  font-size: 0.9rem;
  color: var(--accent-gold);
  min-height: 1.2rem;
}

.status-text.check {
  color: var(--accent);
  font-weight: 700;
  animation: pulse-timer 0.8s ease-in-out infinite;
}

.mimic-info {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Item notification */
.item-notification {
  position: fixed;
  top: 1rem;
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 0.6rem 1.5rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.3s ease;
  z-index: 100;
  pointer-events: none;
}

.item-notification.show {
  transform: translateX(-50%) translateY(0);
}

/* Promotion modal */
.promotion-modal {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 50;
  justify-content: center;
  align-items: center;
}

.promotion-modal.active {
  display: flex;
}

.promotion-content {
  background: var(--bg-secondary);
  border: 2px solid var(--accent);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
}

.promotion-content h3 {
  margin-bottom: 1rem;
  color: var(--accent-gold);
}

.promotion-options {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
}

.promotion-btn {
  background: var(--bg-surface);
  border: 2px solid var(--border);
  border-radius: 10px;
  width: 60px;
  height: 60px;
  font-size: 2rem;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.1s;
}

.promotion-btn:hover {
  border-color: var(--accent);
  transform: scale(1.1);
}

/* Move history */
.move-history {
  width: 100%;
  max-width: 540px;
  max-height: 120px;
  overflow-y: auto;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem;
  font-family: monospace;
  font-size: 0.8rem;
}

.move-history.collapsed {
  max-height: 30px;
  overflow: hidden;
}

.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.25rem;
}

.history-header span {
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.history-toggle {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.8rem;
}

.move-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.move-row {
  display: flex;
  gap: 0.5rem;
}

.move-number {
  color: var(--text-secondary);
  min-width: 25px;
}

.move-notation {
  min-width: 60px;
}

.move-notation.white { color: var(--white-player); }
.move-notation.black { color: var(--black-player); }

/* Game action buttons */
.game-actions {
  display: flex;
  gap: 0.5rem;
}

.btn-sound {
  background: var(--bg-card);
  border: 1px solid var(--border);
  font-size: 1.1rem;
  line-height: 1;
  padding: 0.4rem 0.6rem;
}

.btn-sound:hover {
  border-color: var(--accent-blue);
}

/* =================== HOW TO PLAY =================== */
.how-to-play-container {
  max-width: 640px;
  padding: 2rem;
  width: 100%;
}

.how-to-play-container h2 {
  color: var(--accent);
  margin-bottom: 1rem;
}

.how-to-play-container h3 {
  color: var(--accent-gold);
  margin: 1.5rem 0 0.5rem;
}

.how-to-play-container p, .how-to-play-container li {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 0.5rem;
}

.how-to-play-container ul {
  padding-left: 1.5rem;
}

.items-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

.items-table th, .items-table td {
  padding: 0.5rem;
  border: 1px solid var(--border);
  text-align: left;
}

.items-table th {
  background: var(--bg-card);
  color: var(--accent-gold);
}

.items-table td {
  color: var(--text-secondary);
}

.items-table td:first-child {
  font-size: 1.2rem;
  text-align: center;
  width: 40px;
}

/* =================== GAME OVER =================== */
.game-over-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100%;
  padding: 2rem;
  gap: 1.5rem;
}

.game-over-title {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--accent-gold);
  text-align: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  width: 100%;
  max-width: 400px;
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  text-align: center;
}

.stat-card.full-width {
  grid-column: 1 / -1;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.8rem;
  margin-bottom: 0.3rem;
}

.stat-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}

.game-over-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

/* =================== RESPONSIVE =================== */
@media (max-width: 480px) {
  .game-title {
    font-size: 2rem;
  }

  .player-panel {
    padding: 0.3rem 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
  }

  .item-slot {
    min-width: 50px;
    padding: 0.15rem 0.35rem;
  }

  .player-timer {
    font-size: 1rem;
  }

  .game-layout {
    padding: 0.25rem;
    gap: 0.3rem;
  }

  .move-history {
    max-height: 80px;
  }

  .promotion-btn {
    width: 50px;
    height: 50px;
    font-size: 1.6rem;
  }

  .game-over-title {
    font-size: 1.8rem;
  }
}

@media (min-width: 768px) {
  .game-layout {
    padding: 1rem;
    gap: 0.75rem;
  }
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* =================== MATCH MODE - MENU TOGGLE =================== */
.match-mode-toggle {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 0.6rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.match-mode-toggle label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.match-mode-toggle input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
}

.match-mode-hint {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* =================== CHAOS FEATURE TOGGLES =================== */
.chaos-toggles {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0.6rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 100%;
}

.chaos-toggles-header {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 1px;
  text-align: center;
}

.chaos-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.15rem 0;
}

.chaos-toggle-label {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 42px;
  height: 22px;
  flex-shrink: 0;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--border);
  border-radius: 22px;
  transition: background 0.2s;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  left: 3px;
  bottom: 3px;
  background: var(--text-secondary);
  border-radius: 50%;
  transition: transform 0.2s, background 0.2s;
}

.toggle-switch input:checked + .toggle-slider {
  background: var(--accent);
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(20px);
  background: #fff;
}

.chaos-toggles-hint {
  font-size: 0.7rem;
  color: var(--text-secondary);
  text-align: center;
  font-style: italic;
}

/* =================== MATCH SCORE DOTS IN PLAYER PANELS =================== */
.match-score-dots {
  display: flex;
  gap: 3px;
  align-items: center;
  flex-shrink: 0;
}

.panel-score-dot {
  font-size: 0.7rem;
  line-height: 1;
}

.panel-score-dot.filled {
  color: var(--accent-gold);
}

.panel-score-dot.empty {
  color: var(--text-secondary);
  opacity: 0.4;
}

/* =================== OVERLAY SCREENS (ROUND COMPLETE / MATCH VICTORY) =================== */
.overlay-screen {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  z-index: 200;
  justify-content: center;
  align-items: center;
  cursor: default;
}

.overlay-screen.active {
  display: flex;
}

.overlay-screen .btn {
  position: relative;
  z-index: 10;
  cursor: pointer;
}

/* =================== ROUND COMPLETE =================== */
.round-complete-container {
  background: var(--bg-secondary);
  border: 2px solid var(--accent-gold);
  border-radius: 16px;
  padding: 2rem 2.5rem;
  text-align: center;
  max-width: 400px;
  width: 90%;
  animation: overlaySlideIn 0.3s ease-out;
}

@keyframes overlaySlideIn {
  from { transform: translateY(-30px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.round-complete-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-gold);
  margin-bottom: 0.5rem;
}

.round-result-text {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* Match scoreboard in round-complete overlay */
.match-scoreboard {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.match-scoreboard-side {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.scoreboard-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.white-side .scoreboard-label { color: var(--white-player); }
.black-side .scoreboard-label { color: var(--black-player); }

.scoreboard-dots {
  display: flex;
  gap: 6px;
}

.score-dot {
  font-size: 1.2rem;
  line-height: 1;
}

.score-dot.filled {
  color: var(--accent-gold);
}

.score-dot.empty {
  color: var(--text-secondary);
  opacity: 0.3;
}

.match-scoreboard-vs {
  font-size: 2rem;
  font-weight: 900;
  color: var(--text-primary);
}

/* =================== MATCH VICTORY =================== */
.match-victory-container {
  background: var(--bg-secondary);
  border: 3px solid var(--accent);
  border-radius: 20px;
  padding: 2.5rem 3rem;
  text-align: center;
  max-width: 450px;
  width: 90%;
  animation: matchVictoryIn 0.5s ease-out;
  z-index: 1;
  position: relative;
}

@keyframes matchVictoryIn {
  0% { transform: scale(0.7); opacity: 0; }
  60% { transform: scale(1.05); }
  100% { transform: scale(1); opacity: 1; }
}

.match-victory-title {
  font-size: 2rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--accent-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
  animation: victoryPulse 1.5s ease-in-out infinite;
}

@keyframes victoryPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}

.match-victory-score {
  font-size: 3rem;
  font-weight: 900;
  color: var(--accent-gold);
  margin-bottom: 1.5rem;
}

.round-results-summary {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}

.round-summary-row {
  display: flex;
  justify-content: space-between;
  padding: 0.4rem 1rem;
  background: var(--bg-surface);
  border-radius: 6px;
  font-size: 0.85rem;
}

.round-num {
  color: var(--text-secondary);
  font-weight: 600;
}

.round-res {
  color: var(--text-primary);
  font-weight: 600;
}

.match-victory-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

/* Confetti */
.match-confetti {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.confetti-piece {
  position: absolute;
  top: -10px;
  width: 8px;
  height: 12px;
  border-radius: 2px;
  opacity: 0.9;
  animation: confettiFall linear forwards;
}

@keyframes confettiFall {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(100vh) rotate(720deg);
    opacity: 0;
  }
}

/* =================== MATCH RESPONSIVE =================== */
@media (max-width: 480px) {
  .round-complete-container {
    padding: 1.5rem;
  }

  .match-victory-container {
    padding: 1.5rem 1.5rem;
  }

  .match-victory-title {
    font-size: 1.5rem;
  }

  .match-victory-score {
    font-size: 2.2rem;
  }

  .match-scoreboard-vs {
    font-size: 1.5rem;
  }
}