/* タワーディフェンス - 統合UIスタイル */

:root {
  --bg-dark: #1a1209;
  --panel-bg: rgba(30, 20, 10, 0.9);
  --gold-color: #ffd700;
  --text-color: #f5deb3;
  --border-color: #8b4513;
  --btn-bg: rgba(60, 40, 20, 0.9);
  --btn-hover: rgba(80, 55, 30, 0.95);
  --btn-selected: rgba(40, 80, 120, 0.9);
}

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

body {
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #1a1a2e 0%, #0d0d1a 100%);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

/* ゲームラッパー - 全体を囲む */
#game-wrapper {
  position: relative;
  width: 900px;
  height: 650px;
  border: 4px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.8);
  overflow: hidden;
}

/* キャンバス */
#game-canvas {
  display: block;
  background-color: var(--bg-dark);
}

/* UIオーバーレイ */
#ui-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* ステータスバー（上部） */
#status-bar {
  position: absolute;
  top: 10px;
  left: 10px;
  right: 160px;
  display: flex;
  justify-content: space-between;
  padding: 10px 20px;
  background: var(--panel-bg);
  border: 2px solid var(--border-color);
  border-radius: 6px;
  pointer-events: auto;
}

#status-bar > div {
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--text-color);
  text-shadow: 1px 1px 2px #000;
}

#gold { color: var(--gold-color); }
#lives { color: #e74c3c; }
#wave { color: #3498db; }

/* 右側パネル */
#right-panel {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 140px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: auto;
}

.panel-section {
  background: var(--panel-bg);
  border: 2px solid var(--border-color);
  border-radius: 6px;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.section-title {
  text-align: center;
  font-size: 0.9rem;
  font-weight: bold;
  color: var(--gold-color);
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border-color);
}

/* タワーボタン */
.tower-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  background: var(--btn-bg);
  border: 2px solid var(--border-color);
  border-radius: 4px;
  color: var(--text-color);
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}

.tower-btn:hover:not(:disabled) {
  background: var(--btn-hover);
  border-color: var(--gold-color);
}

.tower-btn.selected {
  background: var(--btn-selected);
  border-color: #3498db;
  box-shadow: 0 0 8px rgba(52, 152, 219, 0.5);
}

.tower-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-icon {
  font-size: 1.4rem;
}

.btn-text {
  font-size: 0.8rem;
  text-align: left;
  line-height: 1.2;
}

.btn-text small {
  color: var(--gold-color);
}

/* タワー情報 */
#tower-info {
  font-size: 0.75rem;
  color: var(--text-color);
  white-space: pre-line;
  min-height: 50px;
}

/* アップグレードボタン */
#upgrade-btn {
  padding: 8px;
  background: linear-gradient(180deg, #3a5a3a, #2a4a2a);
  border: 2px solid #4a6a4a;
  border-radius: 4px;
  color: var(--text-color);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.85rem;
  transition: all 0.15s;
}

#upgrade-btn:hover:not(:disabled) {
  background: linear-gradient(180deg, #4a6a4a, #3a5a3a);
  border-color: #5a8a5a;
}

#upgrade-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Wave開始ボタン */
#start-wave-btn {
  padding: 12px;
  background: linear-gradient(180deg, #ffd700, #b8860b);
  border: 2px solid #8b6914;
  border-radius: 6px;
  color: #1a0a00;
  font-family: inherit;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.15s;
  box-shadow: 0 3px 0 #705010;
}

#start-wave-btn:hover:not(:disabled) {
  background: linear-gradient(180deg, #ffe44d, #ffd700);
  transform: translateY(-1px);
  box-shadow: 0 4px 0 #705010;
}

#start-wave-btn:active:not(:disabled) {
  transform: translateY(1px);
  box-shadow: 0 1px 0 #705010;
}

#start-wave-btn:disabled {
  background: linear-gradient(180deg, #666, #444);
  border-color: #333;
  color: #888;
  cursor: not-allowed;
  box-shadow: 0 3px 0 #222;
}

/* メッセージ表示 */
#message {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  padding: 15px 30px;
  background: rgba(0, 0, 0, 0.85);
  border: 3px solid var(--gold-color);
  border-radius: 8px;
  color: var(--gold-color);
  font-size: 1.5rem;
  font-weight: bold;
  text-align: center;
  pointer-events: auto;
  display: none;
}

#message:not(:empty) {
  display: block;
}