/* =========================================================
   Pixel Runner - 样式表
   像素风 / 卡通明亮配色
   ========================================================= */

:root {
  --color-sky: #87ceeb;
  --color-grass: #7ec850;
  --color-ground: #8b5a2b;
  --color-dark: #2d3436;
  --color-primary: #ff6b6b;
  --color-primary-dark: #ee5253;
  --color-secondary: #54a0ff;
  --color-secondary-dark: #2e86de;
  --color-accent: #ffd93d;
  --color-success: #00b894;
  --color-danger: #d63031;
  --color-panel-bg: rgba(45, 52, 54, 0.92);
  --color-panel-border: #ffd93d;
  --color-text: #ffffff;
  --color-text-muted: #b2bec3;
  --font-pixel: 'Press Start 2P', 'Courier New', monospace;
  --font-cn: 'ZCOOL KuaiLe', 'Microsoft YaHei', sans-serif;
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #1a1a2e;
  font-family: var(--font-cn);
  color: var(--color-text);
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- 游戏容器 ---------- */
#game-container {
  position: relative;
  width: 100%;
  height: 100%;
  max-width: 1200px;
  max-height: 675px;
  aspect-ratio: 16 / 9;
  background: var(--color-sky);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  border-radius: 4px;
}

#game-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
  touch-action: none;
}

/* ---------- HUD ---------- */
#hud {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 16px 24px;
  z-index: 10;
  pointer-events: none;
}

.hud-left {
  display: flex;
  gap: 24px;
}

.hud-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--color-panel-bg);
  padding: 8px 16px;
  border-radius: 6px;
  border: 2px solid var(--color-panel-border);
}

.hud-label {
  font-size: 11px;
  font-family: var(--font-pixel);
  color: var(--color-accent);
  letter-spacing: 1px;
}

.hud-value {
  font-size: 20px;
  font-family: var(--font-pixel);
  color: var(--color-text);
  font-weight: bold;
}

.hud-right {
  display: flex;
  align-items: center;
}

.hp-bar-wrap {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--color-panel-bg);
  padding: 10px 16px;
  border-radius: 6px;
  border: 2px solid var(--color-panel-border);
}

.hp-label {
  font-size: 11px;
  font-family: var(--font-pixel);
  color: var(--color-accent);
  letter-spacing: 1px;
}

.hp-bar {
  width: 180px;
  height: 16px;
  background: rgba(0, 0, 0, 0.5);
  border-radius: 2px;
  overflow: hidden;
  border: 2px solid #fff;
  position: relative;
}

.hp-fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #00b894, #55efc4);
  transition: width 0.3s ease, background 0.3s ease;
}

.hp-fill.medium {
  background: linear-gradient(90deg, #fdcb6e, #ffeaa7);
}

.hp-fill.low {
  background: linear-gradient(90deg, #d63031, #ff7675);
}

/* ---------- 操作提示 ---------- */
#controls-hint {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 10;
  pointer-events: none;
  background: var(--color-panel-bg);
  padding: 8px 16px;
  border-radius: 6px;
  border: 2px solid var(--color-panel-border);
  font-family: var(--font-pixel);
  font-size: 10px;
}

#controls-hint .key {
  background: var(--color-accent);
  color: var(--color-dark);
  padding: 4px 8px;
  border-radius: 4px;
  font-weight: bold;
}

#controls-hint .desc {
  color: var(--color-text);
  margin-right: 12px;
}

#controls-hint .desc:last-child {
  margin-right: 0;
}

/* ---------- 覆盖层 ---------- */
.overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(26, 26, 46, 0.75);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 100;
}

.overlay-card {
  background: var(--color-panel-bg);
  border: 4px solid var(--color-panel-border);
  border-radius: 12px;
  padding: 40px 48px;
  text-align: center;
  max-width: 480px;
  width: 90%;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.game-title {
  font-family: var(--font-pixel);
  font-size: 32px;
  color: var(--color-accent);
  margin-bottom: 8px;
  text-shadow: 4px 4px 0 var(--color-primary-dark);
  letter-spacing: 2px;
}

.game-subtitle {
  font-family: var(--font-pixel);
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  letter-spacing: 3px;
}

.gameover-title {
  font-family: var(--font-pixel);
  font-size: 28px;
  color: var(--color-primary);
  margin-bottom: 24px;
  text-shadow: 3px 3px 0 rgba(0, 0, 0, 0.5);
}

.panel-title {
  font-family: var(--font-pixel);
  font-size: 18px;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.panel-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: block;
  width: 100%;
  padding: 14px 24px;
  margin-top: 12px;
  font-family: var(--font-cn);
  font-size: 18px;
  font-weight: bold;
  border: 3px solid;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
  text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.2);
}

.btn:first-child {
  margin-top: 0;
}

.btn:active {
  transform: translateY(2px);
}

.btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary-dark);
  color: white;
  box-shadow: 0 4px 0 var(--color-primary-dark);
}

.btn-primary:hover {
  background: #ff7b7b;
}

.btn-primary:active {
  box-shadow: 0 2px 0 var(--color-primary-dark);
}

.btn-secondary {
  background: var(--color-secondary);
  border-color: var(--color-secondary-dark);
  color: white;
  box-shadow: 0 4px 0 var(--color-secondary-dark);
}

.btn-secondary:hover {
  background: #6ab0ff;
}

.btn-secondary:active {
  box-shadow: 0 2px 0 var(--color-secondary-dark);
}

/* ---------- 开始界面统计 ---------- */
.start-stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 28px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: rgba(0, 0, 0, 0.3);
  padding: 12px 24px;
  border-radius: 8px;
  border: 2px solid var(--color-text-muted);
}

.stat-label {
  font-family: var(--font-pixel);
  font-size: 10px;
  color: var(--color-text-muted);
  letter-spacing: 1px;
}

.stat-value {
  font-family: var(--font-pixel);
  font-size: 22px;
  color: var(--color-accent);
}

/* ---------- 结束界面结果 ---------- */
.result-stats {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(0, 0, 0, 0.3);
  padding: 12px 20px;
  border-radius: 6px;
  border: 2px solid var(--color-text-muted);
}

.result-label {
  font-family: var(--font-pixel);
  font-size: 11px;
  color: var(--color-text-muted);
  letter-spacing: 1px;
}

.result-value {
  font-family: var(--font-pixel);
  font-size: 18px;
  color: var(--color-accent);
}

/* ---------- 提示文字 ---------- */
.hint-text {
  margin-top: 24px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.8;
}

.key-mini {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-dark);
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--font-pixel);
  font-size: 10px;
  margin: 0 4px;
}

.pause-hint {
  color: var(--color-text-muted);
  margin-bottom: 24px;
  font-size: 14px;
}

/* ---------- 设置面板 ---------- */
.settings-card {
  max-width: 520px;
  padding: 28px 32px;
}

.settings-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
  max-height: 320px;
  overflow-y: auto;
  padding-right: 4px;
}

.settings-form::-webkit-scrollbar {
  width: 6px;
}

.settings-form::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 3px;
}

.settings-form::-webkit-scrollbar-thumb {
  background: var(--color-accent);
  border-radius: 3px;
}

.form-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.form-row label {
  flex-shrink: 0;
  width: 80px;
  font-family: var(--font-pixel);
  font-size: 10px;
  color: var(--color-accent);
}

.form-row input {
  flex: 1;
  padding: 8px 12px;
  border: 2px solid var(--color-text-muted);
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.3);
  color: var(--color-text);
  font-family: var(--font-cn);
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s;
}

.form-row input:focus {
  border-color: var(--color-accent);
}

.form-row input::placeholder {
  color: var(--color-text-muted);
  font-size: 12px;
}

.settings-actions {
  display: flex;
  gap: 12px;
}

.settings-actions .btn {
  flex: 1;
  margin-top: 0;
}

/* ---------- 工具类 ---------- */
.hidden {
  display: none !important;
}

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
  .overlay-card {
    padding: 28px 24px;
  }

  .game-title {
    font-size: 22px;
  }

  .game-subtitle {
    font-size: 10px;
    margin-bottom: 20px;
  }

  .gameover-title {
    font-size: 20px;
  }

  .hud-left {
    gap: 10px;
  }

  .hud-item {
    padding: 6px 10px;
  }

  .hud-label {
    font-size: 9px;
  }

  .hud-value {
    font-size: 14px;
  }

  .hp-bar {
    width: 120px;
    height: 12px;
  }

  #hud {
    padding: 10px 12px;
  }

  #controls-hint {
    font-size: 9px;
    padding: 6px 12px;
  }

  .stat-value {
    font-size: 16px;
  }

  .result-value {
    font-size: 14px;
  }

  .btn {
    padding: 12px 20px;
    font-size: 16px;
  }

  .settings-card {
    padding: 20px;
  }

  .form-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .form-row label {
    width: auto;
  }

  .form-row input {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .hp-bar-wrap {
    padding: 6px 10px;
  }

  .hp-label {
    font-size: 9px;
  }

  .hp-bar {
    width: 90px;
  }

  .hud-value {
    font-size: 12px;
  }
}