/* ===========================
   3D迷路ゲーム スタイルシート

   Auther : 防人２曹
   Created: 2026/05/05
   Updated: 2026/05/05
   =========================== */

/* Google Fontsは使わず、システムフォントを使用 */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-dark: #0a0a0f;
  --bg-panel: #111118;
  --bg-card: #1a1a26;
  --accent: #00e5ff;
  --accent-glow: rgba(0, 229, 255, 0.35);
  --accent2: #ff6b35;
  --text-primary: #e8eaf6;
  --text-muted: #7986cb;
  --border: rgba(0, 229, 255, 0.2);
  --wall-color: #334;
  --radius: 10px;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow-x: hidden;
}

body {
  background: var(--bg-dark);
  color: var(--text-primary);
  font-family: 'Courier New', Courier, monospace;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(0, 100, 200, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 100%, rgba(80, 0, 200, 0.10) 0%, transparent 60%);
}

/* ─── ヘッダー ─── */
header {
  width: 100%;
  max-width: 860px;
  padding: 18px 20px 10px;
  text-align: center;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.header-center {
  width: 100%;
}

#back-btn {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 8px 14px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  transition: all 0.2s ease;
  white-space: nowrap;
  letter-spacing: 1px;
}

#back-btn:hover {
  background: var(--accent-glow);
  box-shadow: 0 0 15px var(--accent-glow);
}

header h1 {
  font-size: clamp(1.4rem, 4vw, 2rem);
  letter-spacing: 4px;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--accent), #7c4dff, var(--accent));
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 4s linear infinite;
  text-shadow: none;
}

@keyframes shimmer {
  to {
    background-position: 200% center;
  }
}

.subtitle {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 2px;
  margin-top: 4px;
}

/* ─── 操作ヒント ─── */
.hint-bar {
  width: 100%;
  max-width: 860px;
  padding: 8px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  justify-content: center;
}

.hint-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.hint-item kbd {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  font-family: inherit;
  font-size: 0.68rem;
  color: var(--accent);
  box-shadow: 0 0 6px var(--accent-glow);
}

/* ─── メインレイアウト ─── */
main {
  width: 100%;
  max-width: 860px;
  padding: 0 12px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

/* ─── ゲームビュー (Canvas + ミニマップ) ─── */
.game-view {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  max-height: 520px;
  background: #000;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow:
    0 0 30px var(--accent-glow),
    inset 0 0 60px rgba(0, 0, 0, 0.8);
  overflow: hidden;
}

#gameCanvas {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
}

/* ─── ミニマップ ─── */
#minimapCanvas {
  position: absolute;
  bottom: 10px;
  right: 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.6);
  box-shadow: 0 0 10px var(--accent-glow);
  image-rendering: pixelated;
}

/* ─── オーバーレイ (CLEAR / LOADING) ─── */
.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  gap: 20px;
  z-index: 10;
  transition: opacity 0.4s;
}

.overlay.hidden {
  display: none;
}

.overlay-title {
  font-size: clamp(2rem, 8vw, 3.5rem);
  letter-spacing: 8px;
  font-weight: 900;
  background: linear-gradient(90deg, var(--accent), #fff, var(--accent));
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 2s linear infinite;
  text-shadow: none;
}

.overlay-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  letter-spacing: 2px;
}

/* ─── ボタン ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 26px;
  background: transparent;
  border: 1px solid var(--accent);
  border-radius: 6px;
  color: var(--accent);
  font-family: inherit;
  font-size: 0.9rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s, transform 0.1s;
  box-shadow: 0 0 10px var(--accent-glow);
}

.btn:hover {
  background: var(--accent-glow);
  box-shadow: 0 0 20px var(--accent-glow), 0 0 40px var(--accent-glow);
}

.btn:active {
  transform: scale(0.96);
}

.btn-new {
  border-color: var(--accent2);
  color: var(--accent2);
  box-shadow: 0 0 10px rgba(255, 107, 53, 0.35);
}

.btn-new:hover {
  background: rgba(255, 107, 53, 0.15);
  box-shadow: 0 0 20px rgba(255, 107, 53, 0.5);
}

.btn-level {
  border-color: #7c4dff;
  color: #b388ff;
  box-shadow: 0 0 10px rgba(124, 77, 255, 0.35);
}

.btn-level:hover {
  background: rgba(124, 77, 255, 0.15);
  box-shadow: 0 0 20px rgba(124, 77, 255, 0.5);
}

.btn-map {
  border-color: #00e5a0;
  color: #00e5a0;
  box-shadow: 0 0 10px rgba(0, 229, 160, 0.3);
  min-width: 100px;
}

.btn-map:hover {
  background: rgba(0, 229, 160, 0.12);
  box-shadow: 0 0 20px rgba(0, 229, 160, 0.5);
}

/* MAPモード中は濃い色に */
.btn-map.map-active {
  background: rgba(0, 229, 160, 0.2);
  box-shadow: 0 0 20px rgba(0, 229, 160, 0.6), 0 0 40px rgba(0, 229, 160, 0.3);
  color: #fff;
}

/* クリア画面のボタン並び */
.overlay-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

/* ─── レベル選択 ─── */
.diff-labels {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 4px;
}

.diff-label {
  font-size: 0.65rem;
  letter-spacing: 1.5px;
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid;
}

.diff-label.easy {
  color: #00e5a0;
  border-color: rgba(0, 229, 160, 0.4);
}

.diff-label.medium {
  color: #ffd740;
  border-color: rgba(255, 215, 64, 0.4);
}

.diff-label.hard {
  color: #ff6b35;
  border-color: rgba(255, 107, 53, 0.4);
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(5, 52px);
  gap: 10px;
}

.level-btn {
  width: 52px;
  height: 52px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1.1rem;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s, transform 0.12s, border-color 0.2s, color 0.2s;
}

/* 難易度カラー */
.level-btn.diff-easy {
  border-color: rgba(0, 229, 160, 0.35);
}

.level-btn.diff-medium {
  border-color: rgba(255, 215, 64, 0.35);
}

.level-btn.diff-hard {
  border-color: rgba(255, 107, 53, 0.35);
}

.level-btn.diff-easy:hover,
.level-btn.diff-easy.selected {
  color: #00e5a0;
  border-color: #00e5a0;
  box-shadow: 0 0 14px rgba(0, 229, 160, 0.5);
  transform: scale(1.12);
  background: rgba(0, 229, 160, 0.08);
}

.level-btn.diff-medium:hover,
.level-btn.diff-medium.selected {
  color: #ffd740;
  border-color: #ffd740;
  box-shadow: 0 0 14px rgba(255, 215, 64, 0.5);
  transform: scale(1.12);
  background: rgba(255, 215, 64, 0.08);
}

.level-btn.diff-hard:hover,
.level-btn.diff-hard.selected {
  color: #ff6b35;
  border-color: #ff6b35;
  box-shadow: 0 0 14px rgba(255, 107, 53, 0.5);
  transform: scale(1.12);
  background: rgba(255, 107, 53, 0.08);
}

.level-desc {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  min-height: 1.4em;
  text-align: center;
}

/* ─── コントロールパッド ─── */
.control-pad {
  display: grid;
  grid-template-columns: repeat(3, 56px);
  grid-template-rows: repeat(3, 56px);
  gap: 6px;
}

.ctrl-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--accent);
  font-size: 1.3rem;
  cursor: pointer;
  transition: background 0.15s, box-shadow 0.15s, transform 0.1s;
  box-shadow: 0 0 8px var(--accent-glow);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ctrl-btn:active,
.ctrl-btn.active {
  background: rgba(0, 229, 255, 0.2);
  box-shadow: 0 0 18px var(--accent-glow);
  transform: scale(0.92);
}

/* グリッド配置 */
.ctrl-up {
  grid-column: 2;
  grid-row: 1;
}

.ctrl-left {
  grid-column: 1;
  grid-row: 2;
}

.ctrl-down {
  grid-column: 2;
  grid-row: 2;
}

/* 後退 */
.ctrl-right {
  grid-column: 3;
  grid-row: 2;
}

/* ─── ボトムバー (ミニマップ + コントロール) ─── */
.bottom-bar {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.maze-info {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  line-height: 1.8;
}

.maze-info span {
  color: var(--accent);
  font-weight: bold;
}

/* ─── ボトムバー左カラム ─── */
.bottom-left {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* ─── クレジット表示 ─── */
.credit {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.65rem;
  letter-spacing: 1px;
}

.credit-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: bold;
  letter-spacing: 2px;
  transition: color 0.2s, text-shadow 0.2s;
}

.credit-link:hover {
  color: #fff;
  text-shadow: 0 0 8px var(--accent);
}

.credit-author {
  color: var(--text-muted);
}

/* ─── NEW MAZE ボタンエリア ─── */
.action-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

/* ─── レスポンシブ ─── */
@media (max-width: 600px) {
  header {
    padding: 12px 12px 6px;
  }

  .hint-bar {
    gap: 6px 14px;
    padding: 6px 12px;
  }

  .hint-item {
    font-size: 0.65rem;
  }

  .game-view {
    aspect-ratio: 1 / 1;
    max-height: 360px;
  }

  #minimapCanvas {
    width: 80px !important;
    height: 80px !important;
  }

  .control-pad {
    grid-template-columns: repeat(3, 52px);
    grid-template-rows: repeat(3, 52px);
  }

  .ctrl-btn {
    font-size: 1.1rem;
  }

  .maze-info {
    font-size: 0.68rem;
  }
}

@media (max-width: 400px) {
  .game-view {
    aspect-ratio: 1 / 1;
    max-height: 280px;
  }

  .control-pad {
    grid-template-columns: repeat(3, 44px);
    grid-template-rows: repeat(3, 44px);
  }
}

/* ─── スクロールバー ─── */
::-webkit-scrollbar {
  width: 6px;
}

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

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