/* 基础样式 */
:root {
  --ocean-blue: #3b82f6;
  --sand-gold: #f59e0b;
  --ocean-light: #e0f2fe;
  --island-green: #10b981;
  --bridge-brown: #8b5cf6;
  --text-dark: #1f2937;
  --text-light: #6b7280;
  --bg-white: #ffffff;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

  /* 玩家颜色 */
  --player-1: #ef4444;
  --player-2: #3b82f6;
  --player-3: #10b981;
  --player-4: #f59e0b;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  background: linear-gradient(135deg, var(--ocean-light) 0%, #bfdbfe 100%);
  min-height: 100vh;
  color: var(--text-dark);
}

/* 屏幕切换 */
.screen {
  display: none;
  min-height: 100vh;
  padding: 20px;
}

.screen.active {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* 设置页面 */
.setup-container {
  background: var(--bg-white);
  border-radius: 20px;
  padding: 40px;
  box-shadow: var(--shadow-lg);
  max-width: 500px;
  width: 100%;
  text-align: center;
}

.game-title {
  font-size: 2.5rem;
  color: var(--ocean-blue);
  margin-bottom: 10px;
}

.game-subtitle {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 30px;
}

.setup-section {
  margin-bottom: 30px;
}

.setup-section h2 {
  font-size: 1.2rem;
  margin-bottom: 15px;
  color: var(--text-dark);
}

.player-selector {
  display: flex;
  gap: 15px;
  justify-content: center;
}

.player-btn {
  padding: 15px 30px;
  font-size: 1.1rem;
  border: 2px solid var(--ocean-blue);
  background: var(--bg-white);
  color: var(--ocean-blue);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.player-btn:hover {
  background: var(--ocean-blue);
  color: var(--bg-white);
}

.player-btn.selected {
  background: var(--ocean-blue);
  color: var(--bg-white);
}

.game-rules-preview {
  background: var(--ocean-light);
  padding: 20px;
  border-radius: 10px;
  text-align: left;
}

.game-rules-preview ul {
  list-style: none;
  padding-left: 0;
}

.game-rules-preview li {
  padding: 8px 0;
  padding-left: 25px;
  position: relative;
}

.game-rules-preview li::before {
  content: "📋";
  position: absolute;
  left: 0;
}

.start-btn {
  width: 100%;
  padding: 15px;
  font-size: 1.2rem;
  background: var(--ocean-blue);
  color: var(--bg-white);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.start-btn:hover:not(:disabled) {
  background: #2563eb;
  transform: translateY(-2px);
}

.start-btn:disabled {
  background: var(--text-light);
  cursor: not-allowed;
}

/* 选择阶段页面 */
#selection-screen {
  flex-direction: column;
  padding: 10px;
}

#selection-screen .game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-white);
  padding: 15px 25px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  margin-bottom: 15px;
  width: 100%;
  max-width: 1400px;
}

#selection-screen .game-info {
  display: flex;
  gap: 30px;
  align-items: center;
}

/* 阶段标签样式 */
.phase-tag {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--sand-gold);
  color: var(--bg-white);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.phase-tag.phase-playing {
  background: var(--island-green);
}

#selecting-player-name {
  padding: 5px 15px;
  border-radius: 20px;
  color: var(--bg-white);
  font-weight: 600;
}

#selection-progress {
  font-weight: 600;
  color: var(--ocean-blue);
}

#selection-board {
  display: grid;
  gap: 2px;
  background: #bfdbfe;
  padding: 10px;
  border-radius: 10px;
}

#selection-board .cell.island {
  cursor: pointer;
  transition: all 0.2s ease;
}

#selection-board .cell.island:hover:not(.selected-island) {
  transform: scale(1.1);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}

#selection-board .cell.island.selected-island {
  border: 3px solid var(--bg-white);
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.2);
}

.player-islands-list {
  max-height: 200px;
  overflow-y: auto;
}

.player-island-item {
  background: var(--ocean-light);
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 8px;
}

.selection-status {
  background: var(--ocean-light);
  padding: 12px;
  border-radius: 8px;
}

#selection-round {
  font-weight: 600;
  color: var(--ocean-blue);
  margin-bottom: 5px;
}

#selection-order {
  font-size: 0.9rem;
  color: var(--text-light);
}

#start-island-section {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border-radius: 10px;
  padding: 15px;
  border: 2px solid var(--sand-gold);
}

#start-island-section h3 {
  color: var(--sand-gold);
  border-bottom-color: var(--sand-gold);
}

/* 游戏页面 */
#game-screen {
  flex-direction: column;
  padding: 10px;
}

.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-white);
  padding: 15px 25px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  margin-bottom: 15px;
  width: 100%;
  max-width: 1400px;
}

.game-info {
  display: flex;
  gap: 30px;
  align-items: center;
}

.current-player {
  font-size: 1.1rem;
  font-weight: 600;
}

#player-name {
  padding: 5px 15px;
  border-radius: 20px;
  color: var(--bg-white);
}

.turn-info {
  color: var(--text-light);
}

.action-btn {
  padding: 10px 25px;
  background: var(--island-green);
  color: var(--bg-white);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.action-btn:hover {
  background: #059669;
}

.game-main {
  display: flex;
  gap: 20px;
  width: 100%;
  max-width: 1400px;
  flex: 1;
}

.board-container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--bg-white);
  border-radius: 15px;
  padding: 20px;
  box-shadow: var(--shadow);
  max-width: 100%;
  overflow: auto;
}

.board {
  display: grid;
  gap: 2px;
  background: #bfdbfe;
  padding: 10px;
  border-radius: 10px;
}

.cell {
  width: 40px;
  height: 40px;
  background: var(--ocean-light);
  border-radius: 4px;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.cell:hover {
  background: #93c5fd;
}

.cell.island {
  background: var(--island-green);
  border-radius: 50%;
}

.cell.island::after {
  content: attr(data-id);
  color: var(--bg-white);
  font-weight: bold;
  font-size: 0.9rem;
}

/* 玩家岛屿样式 */
.cell.player-1-island {
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.5);
}
.cell.player-2-island {
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.5);
}
.cell.player-3-island {
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.5);
}
.cell.player-4-island {
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.5);
}

/* 起始岛屿样式 - 金色星标 */
.cell.start-island {
  position: relative;
}

.cell.start-island::before {
  content: "★";
  position: absolute;
  top: -8px;
  right: -8px;
  width: 20px;
  height: 20px;
  background: var(--sand-gold);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 0.75rem;
  color: var(--bg-white);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  z-index: 5;
}

/* 已联通岛屿样式 - 对勾标记 */
.cell.connected-island {
  position: relative;
}

.cell.connected-island::after {
  content: "✓";
  position: absolute;
  bottom: -5px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 16px;
  background: var(--ocean-blue);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 0.7rem;
  color: var(--bg-white);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  z-index: 5;
}

.cell.bridge {
  background: var(--bridge-brown);
}

.cell.valid-move {
  background: rgba(59, 130, 246, 0.5);
  animation: pulse 1.5s infinite;
}

.cell.valid-build {
  background: rgba(139, 92, 246, 0.5);
  animation: pulse 1.5s infinite;
}

.cell.selected {
  box-shadow: 0 0 0 3px var(--sand-gold);
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

/* 工人样式 */
.worker {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  position: absolute;
  border: 2px solid var(--bg-white);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  z-index: 10;
  transition: all 0.3s ease;
}

.worker.player-1 {
  background: var(--player-1);
}
.worker.player-2 {
  background: var(--player-2);
}
.worker.player-3 {
  background: var(--player-3);
}
.worker.player-4 {
  background: var(--player-4);
}

.worker::after {
  content: attr(data-id);
  color: var(--bg-white);
  font-size: 0.7rem;
  font-weight: bold;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.worker.selected {
  transform: scale(1.2);
  box-shadow: 0 0 0 4px var(--sand-gold);
}

/* 侧边面板 */
.side-panel {
  width: 280px;
  background: var(--bg-white);
  border-radius: 15px;
  padding: 20px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.panel-section h3 {
  font-size: 1rem;
  margin-bottom: 12px;
  color: var(--text-dark);
  border-bottom: 2px solid var(--ocean-light);
  padding-bottom: 8px;
}

.action-hint {
  background: var(--ocean-light);
  padding: 12px;
  border-radius: 8px;
  font-size: 0.95rem;
  color: var(--text-dark);
}

.worker-status {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.worker-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px;
  background: var(--ocean-light);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.worker-item:hover:not(.acted) {
  background: #bfdbfe;
  transform: translateX(4px);
}

.worker-item.selected {
  background: var(--sand-gold);
  box-shadow: 0 0 0 2px var(--sand-gold);
}

.worker-item.acted {
  opacity: 0.5;
  cursor: not-allowed;
}

.worker-action {
  font-size: 0.85rem;
  color: var(--text-light);
}

.worker-item.acted .worker-action {
  color: var(--island-green);
}

.target-islands {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.island-tag {
  padding: 6px 12px;
  background: var(--island-green);
  color: var(--bg-white);
  border-radius: 15px;
  font-size: 0.85rem;
  display: inline-block;
  margin-bottom: 8px;
  margin-right: 8px;
}

.island-tag.connected {
  background: var(--ocean-blue);
}

.island-tag.start {
  background: var(--sand-gold);
  font-weight: bold;
}

.action-tips {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tip-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
}

.tip-color {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  border: 2px solid transparent;
}

.tip-color.move-tip {
  background: rgba(59, 130, 246, 0.5);
  border-color: #3b82f6;
}

.tip-color.build-tip {
  background: rgba(139, 92, 246, 0.5);
  border-color: #8b5cf6;
}

/* 结束页面 */
.end-container {
  background: var(--bg-white);
  border-radius: 20px;
  padding: 50px;
  box-shadow: var(--shadow-lg);
  text-align: center;
  max-width: 500px;
  width: 100%;
}

.end-title {
  font-size: 2.5rem;
  color: var(--island-green);
  margin-bottom: 30px;
}

.winner-info {
  margin-bottom: 40px;
}

.winner-text {
  font-size: 1.5rem;
  margin-bottom: 15px;
}

#winner-name {
  font-weight: bold;
  color: var(--ocean-blue);
}

.winner-stats {
  color: var(--text-light);
  font-size: 1.1rem;
}

.end-actions {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .game-main {
    flex-direction: column;
  }

  .side-panel {
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .panel-section {
    flex: 1;
    min-width: 200px;
  }
}

@media (max-width: 768px) {
  .board-container {
    padding: 10px;
  }

  .cell {
    width: 22px;
    height: 22px;
  }

  .worker {
    width: 14px;
    height: 14px;
    border-width: 1px;
  }

  .worker::after {
    font-size: 0.5rem;
  }

  .cell.island::after {
    font-size: 0.65rem;
  }

  .game-header {
    flex-direction: column;
    gap: 10px;
    padding: 10px 15px;
  }

  .game-info {
    flex-direction: column;
    gap: 5px;
    text-align: center;
  }

  .side-panel {
    padding: 15px;
  }

  .panel-section h3 {
    font-size: 0.9rem;
  }
}