/* ============================================================
 * 火星车教育游戏 · 主样式
 * 设计语言:ORBITAL · Aerospace Mission Console v2
 *
 * 设计取向:
 *   - 暗色基底,火星橙红 + 冰蓝信号色为对比
 *   - 字体三段式:Unbounded(显示/品牌) + Lexend(正文) + JetBrains Mono(数据)
 *   - 多层氛围:noise + vignette + 渐变网格 + 顶部信号条
 *   - 硬朗的航天面板切角,信号灯指示
 *   - 所有交互动画由 GSAP 接管(CSS 只做样式,动画在 main.js 中编排)
 * ========================================================== */

:root {
  /* === 暗色基底(冷蓝-深紫双轴,避免单调) === */
  --void:       #04030c;   /* 真空黑 */
  --space:      #07091a;   /* 深空 */
  --space-2:    #0a0d22;   /* 略亮 */
  --panel:      #0e1129;   /* 面板底 */
  --panel-2:    #141838;   /* 面板层 */
  --elev:       #1c2049;   /* 抬升 */
  --elev-2:     #242a5a;   /* 更高抬升 */
  --hairline:   rgba(155, 178, 255, 0.08);
  --hairline-2: rgba(155, 178, 255, 0.16);

  /* === 火星(Mars)签名色(用于"世界"标识) === */
  --mars-core:  #ff5b3a;    /* 火星橙红 */
  --mars-deep:  #c2331a;
  --mars-glow:  #ff9160;
  --mars-dust:  #b56744;

  /* === 信号色(航天任务控制) === */
  --signal-cyan:    #4ad6ff;   /* 主信号:冰蓝,稍亮避免刺眼 */
  --signal-cyan-d:  #2a8fb5;
  --signal-amber:   #ffc24a;   /* 警告 */
  --signal-amber-d: #b5881a;
  --signal-green:   #2affa8;   /* 能量/生命 */
  --signal-green-d: #1ab37a;
  --signal-red:     #ff4a6a;   /* 故障 */
  --signal-violet:  #b48eff;   /* 紫罗兰,辅助色 */

  /* === 文字层次 === */
  --text-bright: #f3efe1;     /* 暖白 */
  --text:        #d6d3c4;
  --text-dim:    #8b8a9c;
  --text-faint:  #535568;
  --text-mono:   #b8c5d8;

  /* === 终端区 === */
  --term-bg:   #050714;
  --term-bg-2: #0a0e1f;
  --kw:        #ff7a9c;
  --str:       #9ce8b5;
  --num:       #ffc24a;
  --fn:        #4ad6ff;
  --com:       #535568;
  --op:        #ffc24a;

  /* === 阴影 / 辉光 === */
  --glow-cyan:  0 0 16px rgba(74, 214, 255, 0.32), 0 0 40px rgba(74, 214, 255, 0.10);
  --glow-mars:  0 0 16px rgba(255, 91, 58, 0.40), 0 0 36px rgba(255, 91, 58, 0.14);
  --glow-amber: 0 0 14px rgba(255, 194, 74, 0.40);
  --glow-green: 0 0 14px rgba(42, 255, 168, 0.36);
  --glow-red:   0 0 16px rgba(255, 74, 106, 0.40);
  --shadow-deep: 0 18px 60px rgba(0, 0, 0, 0.55), 0 2px 8px rgba(0, 0, 0, 0.35);
  --shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.05), inset 0 -1px 0 rgba(0, 0, 0, 0.4);

  /* === 字体(纯本地系统字体栈,无外部依赖) === */
  --font-display: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;  /* 品牌/标题 */
  --font-tech:    'SF Mono', 'Menlo', 'Consolas', 'Courier New', monospace; /* 技术性极强字 */
  --font-body:    'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --font-mono:    'SF Mono', 'Menlo', 'Consolas', 'Courier New', monospace;
  --font-code:    'SF Mono', 'Menlo', 'Consolas', 'Courier New', monospace;
  --code-size:    16.8px;   /* 14px × 1.2,教室可见性优化 */
  --code-lh:      28.8px;   /* 24px × 1.2,行高同步放大 */
}

/* ==================== 基础 ==================== */
* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--void);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 400;
  height: 100vh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: 0.005em;
}

body {
  background:
    /* 顶部冷蓝漫射 */
    radial-gradient(ellipse 70% 40% at 0% 0%, rgba(74, 214, 255, 0.10) 0%, transparent 60%),
    /* 右下火星漫射 */
    radial-gradient(ellipse 60% 50% at 100% 100%, rgba(255, 91, 58, 0.08) 0%, transparent 60%),
    /* 中央微紫 */
    radial-gradient(ellipse 50% 50% at 50% 50%, rgba(180, 142, 255, 0.04) 0%, transparent 60%),
    var(--void);
  position: relative;
}

/* ==================== 氛围层(noise + vignette + 网格) ==================== */
body::before {
  /* 精细栅格底纹 */
  content: '';
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(74, 214, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 214, 255, 0.022) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: -1px -1px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 95%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 95%);
}

/* noise 颗粒(用 data-uri SVG noise) */
.noise {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 998;
  opacity: 0.04;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.5 0'/></filter><rect width='200' height='200' filter='url(%23n)'/></svg>");
}

/* vignette 边角压暗 */
.vignette {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 999;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(0, 0, 0, 0.55) 100%);
}

/* 扫描线:更细、慢移,作为隐含的屏幕感 */
body::after {
  content: '';
  position: fixed; inset: 0;
  background: repeating-linear-gradient(
    180deg,
    transparent 0px,
    transparent 2px,
    rgba(74, 214, 255, 0.014) 2px,
    rgba(74, 214, 255, 0.014) 3px
  );
  pointer-events: none;
  z-index: 997;
  mix-blend-mode: screen;
  animation: scanDrift 18s linear infinite;
}
@keyframes scanDrift {
  from { background-position: 0 0; }
  to   { background-position: 0 80px; }
}

.app {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* ==================== 顶部导航 ==================== */
.topbar {
  display: flex;
  align-items: stretch;
  height: 76px;
  flex-shrink: 0;
  background: linear-gradient(180deg, rgba(14, 17, 41, 0.95) 0%, rgba(7, 9, 26, 0.85) 100%);
  border-bottom: 1px solid var(--hairline);
  position: relative;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* 顶栏底部信号条(彩色渐变) */
.topbar::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--mars-core) 14%,
    var(--signal-amber) 32%,
    var(--signal-cyan) 52%,
    var(--signal-green) 72%,
    var(--signal-violet) 88%,
    transparent 100%);
  opacity: 0.65;
}

/* ============ 品牌(orbital ring) ============ */
.brand {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 28px 0 24px;
  position: relative;
  min-width: 280px;
  flex-shrink: 0;
}
.brand::after {
  content: '';
  position: absolute;
  right: 0; top: 18px; bottom: 18px;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--hairline-2), transparent);
}
.brand-orbit {
  position: relative;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  flex-shrink: 0;
}
.orbit-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--mars-glow);
  opacity: 0.7;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.orbit-ring-1 {
  width: 40px; height: 40px;
  border-color: rgba(255, 145, 96, 0.55);
  animation: orbit-spin 8s linear infinite;
}
.orbit-ring-2 {
  width: 30px; height: 30px;
  border-color: rgba(74, 214, 255, 0.50);
  border-style: dashed;
  animation: orbit-spin 12s linear infinite reverse;
}
.orbit-core {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff5e0, var(--mars-glow) 60%, var(--mars-core) 100%);
  box-shadow: 0 0 10px var(--mars-glow), 0 0 22px rgba(255, 91, 58, 0.4);
  position: relative;
  z-index: 1;
  animation: orbit-pulse 3s ease-in-out infinite;
}
@keyframes orbit-spin {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}
@keyframes orbit-pulse {
  0%, 100% { box-shadow: 0 0 10px var(--mars-glow), 0 0 22px rgba(255, 91, 58, 0.4); }
  50%      { box-shadow: 0 0 14px var(--mars-glow), 0 0 30px rgba(255, 91, 58, 0.6); }
}

.brand-text { line-height: 1.1; }
.brand-text h1 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  color: var(--text-bright);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand-dot {
  display: inline-block;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--mars-glow);
  box-shadow: 0 0 6px var(--mars-glow);
  vertical-align: middle;
}
.brand-text span {
  display: block;
  margin-top: 5px;
  font-size: 9px;
  color: var(--text-dim);
  letter-spacing: 0.32em;
  font-family: var(--font-tech);
  font-weight: 400;
  text-transform: uppercase;
}

/* ============ 模式切换 ============ */
.mode-switch {
  display: flex;
  align-items: center;
  margin: auto 0;
  gap: 0;
  flex-shrink: 0;
  height: 100%;
}
.mode-btn {
  background: transparent;
  border: 0;
  border-left: 1px solid var(--hairline);
  color: var(--text-dim);
  padding: 0 28px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-family: var(--font-tech);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  transition: color 0.3s ease, background 0.3s ease;
  position: relative;
  height: 100%;
  min-height: 40px;
}
.mode-btn:last-child { border-right: 1px solid var(--hairline); }
.mode-btn::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--signal-cyan), transparent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.mode-btn::after {
  /* 角部小光点 */
  content: '';
  position: absolute;
  top: 14px; left: 14px;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--text-faint);
  transition: all 0.3s;
}
.mode-btn:hover { color: var(--text-bright); background: rgba(74, 214, 255, 0.04); }
.mode-btn:hover::after { background: var(--signal-cyan); box-shadow: var(--glow-cyan); }
.mode-btn.active {
  color: var(--text-bright);
  background: linear-gradient(180deg, rgba(74, 214, 255, 0.10) 0%, transparent 100%);
}
.mode-btn.active::after { background: var(--signal-cyan); box-shadow: var(--glow-cyan); }
.mode-btn.active::before { transform: scaleX(1); }
.mode-num {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 14px;
  height: 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 14px;
  font-weight: 700;
  color: var(--mars-glow);
  letter-spacing: 0;
  text-shadow: 0 0 8px rgba(255, 145, 96, 0.3);
  position: relative;
  top: 0;
}
.mode-btn.active .mode-num { color: var(--mars-glow); }
.mode-label { position: relative; top: 0; line-height: 14px; display: flex; align-items: center; height: 14px; }

/* 引导按钮(琥珀色区分) */
.mode-btn-tutorial {
  background: rgba(255, 194, 74, 0.06);
  border-left: 1px solid var(--hairline);
  color: var(--signal-amber);
}
.mode-btn-tutorial .mode-num { color: var(--signal-amber); text-shadow: 0 0 8px rgba(255, 194, 74, 0.5); }
.mode-btn-tutorial:hover { background: rgba(255, 194, 74, 0.14); color: var(--text-bright); }
.mode-btn-tutorial:hover::after { background: var(--signal-amber); }
.mode-btn-tutorial.active {
  color: var(--text-bright);
  background: linear-gradient(180deg, rgba(255, 194, 74, 0.18) 0%, rgba(255, 145, 96, 0.12) 100%);
}
.mode-btn-tutorial.active::after { background: var(--signal-amber); box-shadow: var(--glow-amber); }

/* 重摇按钮:与其他 mode-btn 分开,带紫色边 */
.mode-btn-reroll {
  border-left: 1px solid var(--hairline);
  color: var(--signal-violet);
}
.mode-btn-reroll .mode-num { color: var(--signal-violet); text-shadow: 0 0 8px rgba(180, 142, 255, 0.5); font-size: 12px; }
.mode-btn-reroll:hover { background: rgba(180, 142, 255, 0.08); }
.mode-btn-reroll::after { background: var(--signal-violet); }
.mode-btn-reroll[hidden] { display: none; }
.mode-icon {
  font-size: 14px;
  margin-right: 6px;
  letter-spacing: 0;
  text-shadow: none;
  font-family: var(--font-mono);
}

/* ============ 遥测(telemetry) ============ */
.telemetry {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 28px 0 24px;
  border-left: 1px solid var(--hairline);
  flex-shrink: 1;
  overflow: hidden;
}
.tlm-cell {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 6px 14px;
}
.tlm-k {
  font-size: 8px;
  letter-spacing: 0.32em;
  color: var(--text-faint);
  font-family: var(--font-tech);
  font-weight: 400;
  text-transform: uppercase;
}
.tlm-v {
  font-size: 12px;
  color: var(--text-bright);
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-shadow: 0 0 6px rgba(74, 214, 255, 0.25);
  font-variant-numeric: tabular-nums;
}
.tlm-divider {
  width: 1px; height: 26px;
  background: linear-gradient(180deg, transparent, var(--hairline-2), transparent);
}
.tlm-link { flex-direction: row; align-items: center; gap: 8px; padding: 6px 16px; }
.tlm-link .tlm-k { margin: 0; }
.tlm-link .tlm-v { color: var(--signal-green); text-shadow: var(--glow-green); font-size: 11px; letter-spacing: 0.2em; }
.tlm-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--signal-green);
  box-shadow: 0 0 8px var(--signal-green), 0 0 18px rgba(42, 255, 168, 0.35);
  animation: pulse-soft 1.6s ease-in-out infinite;
}
@keyframes pulse-soft {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.55; transform: scale(0.85); }
}

/* ==================== 主体工作区 ==================== */
.workspace {
  flex: 1;
  display: grid;
  grid-template-columns: 1.42fr 1fr;
  gap: 18px;
  padding: 18px 24px 22px;
  min-height: 0;
}

/* ============ 面板通用 ============ */
.panel {
  background:
    linear-gradient(180deg, rgba(20, 24, 56, 0.55) 0%, rgba(10, 13, 34, 0.55) 100%);
  border: 1px solid var(--hairline-2);
  display: flex;
  flex-direction: column;
  min-height: 0;
  position: relative;
  /* 角部切口(科技面板签名细节) */
  clip-path: polygon(
    0 0, calc(100% - 22px) 0, 100% 22px,
    100% 100%, 22px 100%, 0 calc(100% - 22px)
  );
  box-shadow: var(--shadow-deep);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
/* 角部装饰:L 形 90° 角线 */
.panel::before, .panel::after {
  content: '';
  position: absolute;
  width: 22px; height: 22px;
  z-index: 3;
  pointer-events: none;
}
.panel::before {
  top: 0; right: 0;
  border-top: 1.5px solid var(--mars-glow);
  border-right: 1.5px solid var(--mars-glow);
  box-shadow: -2px -2px 12px rgba(255, 145, 96, 0.4);
}
.panel::after {
  bottom: 0; left: 0;
  border-bottom: 1.5px solid var(--signal-cyan);
  border-left: 1.5px solid var(--signal-cyan);
  box-shadow: 2px 2px 12px rgba(74, 214, 255, 0.4);
}
.panel-code::before { border-color: var(--signal-cyan); box-shadow: -2px -2px 12px rgba(74, 214, 255, 0.4); }
.panel-code::after { border-color: var(--signal-violet); box-shadow: 2px 2px 12px rgba(180, 142, 255, 0.4); }

/* ============ 面板头 ============ */
.panel-header {
  padding: 16px 22px;
  border-bottom: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  gap: 18px;
  background: linear-gradient(180deg, rgba(28, 32, 73, 0.6) 0%, transparent 100%);
  position: relative;
  min-height: 56px;
}
.panel-header::after {
  content: '';
  position: absolute;
  left: 22px; right: 22px; bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg,
    var(--mars-glow) 0%,
    transparent 30%,
    transparent 70%,
    var(--signal-cyan) 100%);
  opacity: 0.5;
}
.panel-header-l {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.panel-tag {
  font-family: var(--font-tech);
  font-size: 9px;
  letter-spacing: 0.32em;
  color: var(--mars-glow);
  border: 1px solid rgba(255, 145, 96, 0.45);
  padding: 4px 9px;
  background: rgba(255, 91, 58, 0.08);
  text-transform: uppercase;
  font-weight: 700;
  position: relative;
  display: inline-flex;
  align-items: center;
}
.panel-tag::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--mars-glow);
  margin-right: 6px;
  box-shadow: 0 0 6px var(--mars-glow);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.35; }
}
.panel-tag-cyan {
  color: var(--signal-cyan);
  border-color: rgba(74, 214, 255, 0.45);
  background: rgba(74, 214, 255, 0.07);
}
.panel-tag-cyan::before { background: var(--signal-cyan); box-shadow: var(--glow-cyan); }

.panel-title {
  margin: 0;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-bright);
  font-family: var(--font-display);
  text-transform: uppercase;
}

/* ============ 状态条(芯片) ============ */
.status-chips {
  margin-left: auto;
  display: flex;
  gap: 8px;
}
.chip {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 6px 14px 7px;
  background: rgba(7, 9, 26, 0.6);
  border: 1px solid var(--hairline-2);
  min-width: 88px;
  position: relative;
  box-shadow: var(--shadow-inset);
}
.chip::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 4px;
  background: var(--text-faint);
}
.chip-label {
  font-size: 8px;
  color: var(--text-faint);
  letter-spacing: 0.28em;
  font-family: var(--font-tech);
  text-transform: uppercase;
  font-weight: 400;
}
.chip-value {
  font-size: 13px;
  color: var(--text-bright);
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-top: 3px;
  font-variant-numeric: tabular-nums;
}
.chip-loop .chip-value { color: var(--signal-cyan); }

/* moves 芯片:常驻显示当前 moves 列表(步数 + 内容预览) */
.chip-moves {
  min-width: 120px;
  max-width: 280px;
  overflow: hidden;
}
.chip-moves .chip-value {
  color: var(--signal-green, #2affa8);
  font-size: 11px;
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 260px;
}
.chip-moves .chip-value.empty {
  color: var(--text-faint);
}
.chip-moves .chip-value::before {
  content: attr(data-count) ' 步 · ';
  color: var(--signal-cyan);
  font-weight: 700;
}

/* ============ 状态条(能量/时间块) ============ */
.status-bar {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 12px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--hairline);
  background: linear-gradient(180deg, rgba(7, 9, 26, 0.4) 0%, transparent 100%);
}
.status-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px 16px 13px;
  background: linear-gradient(180deg, rgba(20, 24, 56, 0.6) 0%, rgba(10, 13, 34, 0.6) 100%);
  border: 1px solid var(--hairline-2);
  position: relative;
  box-shadow: var(--shadow-inset);
}
.status-block::before {
  content: '';
  position: absolute;
  top: 0; bottom: 0; left: 0;
  width: 2px;
}
.status-block.status-energy::before { background: var(--signal-green); box-shadow: 0 0 8px var(--signal-green); }
.status-block.status-time::before   { background: var(--signal-amber); box-shadow: var(--glow-amber); }

.status-block-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.status-block-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  font-family: var(--font-tech);
  color: var(--text-dim);
  font-weight: 400;
}
.led {
  width: 7px; height: 7px;
  border-radius: 50%;
  display: inline-block;
  position: relative;
}
.led::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  animation: pulse 1.8s ease-in-out infinite;
}
.led-green { background: var(--signal-green); box-shadow: 0 0 8px var(--signal-green); }
.led-green::after { box-shadow: 0 0 6px var(--signal-green); }
.led-amber { background: var(--signal-amber); box-shadow: var(--glow-amber); }
.led-amber::after { box-shadow: 0 0 6px var(--signal-amber); }
.led-red   { background: var(--signal-red);   box-shadow: var(--glow-red); }
.led-red::after { box-shadow: 0 0 6px var(--signal-red); }

.status-block-value {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 16px;
  color: var(--text-bright);
  letter-spacing: 0.04em;
  text-shadow: 0 0 6px rgba(74, 214, 255, 0.3);
  font-variant-numeric: tabular-nums;
}
.status-block.status-energy .status-block-value { color: var(--signal-green); text-shadow: var(--glow-green); }
.status-block.status-time   .status-block-value { color: var(--signal-amber); text-shadow: 0 0 6px rgba(255, 194, 74, 0.4); }
.status-block.energy-low   .status-block-value { color: var(--signal-red);   text-shadow: var(--glow-red); }
.status-block.energy-warn  .status-block-value { color: var(--signal-amber); }

.energy-bar {
  height: 7px;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid var(--hairline-2);
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.6);
}
.energy-bar::before {
  /* 等距刻度 */
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    90deg,
    transparent 0,
    transparent 9.9%,
    rgba(255, 255, 255, 0.10) 10%,
    transparent 10.1%,
    transparent 10% * 2
  );
  z-index: 2;
  pointer-events: none;
}
.energy-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--signal-green) 0%, #6dffce 100%);
  box-shadow: var(--glow-green);
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1), background 0.3s, box-shadow 0.3s;
  position: relative;
}
.energy-bar-fill::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 50%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.28), transparent);
}
.energy-bar-fill.warn {
  background: linear-gradient(90deg, var(--signal-amber) 0%, #ffe388 100%);
  box-shadow: var(--glow-amber);
}
.energy-bar-fill.low {
  background: linear-gradient(90deg, var(--signal-red) 0%, #ff8aa0 100%);
  box-shadow: var(--glow-red);
  animation: energy-pulse 0.7s ease-in-out infinite;
}
@keyframes energy-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.45; }
}

/* ==================== 路线操作提示(地形模式) ==================== */
.route-hint {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 22px;
  background: linear-gradient(180deg, rgba(7, 9, 26, 0.45) 0%, rgba(20, 24, 56, 0.25) 100%);
  border-bottom: 1px solid var(--hairline);
  font-family: var(--font-tech);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  position: relative;
}
.route-hint[hidden] { display: none; }
.route-hint::after {
  content: '';
  position: absolute;
  left: 22px; right: 22px; bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--signal-green) 30%,
    var(--signal-amber) 60%,
    var(--signal-red) 90%,
    transparent 100%);
  opacity: 0.45;
}
.route-hint-tag {
  font-size: 9px;
  letter-spacing: 0.32em;
  color: var(--mars-glow);
  border: 1px solid rgba(255, 145, 96, 0.45);
  padding: 4px 8px;
  background: rgba(255, 91, 58, 0.08);
  text-transform: uppercase;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}
.route-hint-tag::before {
  content: '';
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--mars-glow);
  margin-right: 6px;
  box-shadow: 0 0 6px var(--mars-glow);
  animation: pulse 2s ease-in-out infinite;
}
.route-hint-text {
  font-size: 11px;
  color: var(--text);
  letter-spacing: 0.04em;
  text-transform: none;
  font-weight: 400;
}
.route-hint-text kbd {
  display: inline-block;
  min-width: 18px;
  padding: 1px 5px;
  margin: 0 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-bright);
  background: linear-gradient(180deg, rgba(28, 32, 73, 0.95) 0%, rgba(14, 17, 41, 0.95) 100%);
  border: 1px solid rgba(74, 214, 255, 0.35);
  border-bottom-width: 2px;
  text-align: center;
  line-height: 1.3;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.4);
}

/* ==================== Canvas 区 ==================== */
.canvas-wrap {
  flex: 1 1 auto;
  display: grid;
  place-items: center;
  position: relative;
  padding: 24px;
  background:
    /* 中心点暗角 */
    radial-gradient(ellipse at center, rgba(74, 214, 255, 0.04) 0%, transparent 60%),
    radial-gradient(ellipse at center, transparent 30%, rgba(0, 0, 0, 0.45) 100%),
    var(--void);
  /* 最小高度/宽度:防止 flex/grid 布局塌陷为 0,导致 3D 画布不可见(Vercel 部署常见) */
  min-height: 320px;
  min-width: 320px;
  overflow: hidden;
}
/* 四角十字准线(精确定位) */
.canvas-wrap::before, .canvas-wrap::after,
.canvas-wrap > .cross-tl, .canvas-wrap > .cross-br {
  content: '';
  position: absolute;
  width: 26px; height: 26px;
  border: 1px solid var(--signal-cyan);
  opacity: 0.45;
  pointer-events: none;
}
.canvas-wrap::before { top: 12px; left: 12px; border-right: 0; border-bottom: 0; }
.canvas-wrap::after  { bottom: 12px; right: 12px; border-left: 0; border-top: 0; }

#game-canvas, #game {
  display: block;
  max-width: 100%;
  max-height: 100%;
  /* 确保画布有最小可视尺寸,防止 flex/grid 布局塌陷导致 3D 不可见 */
  min-width: 200px;
  min-height: 200px;
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: auto;          /* 平滑缩放,SVG 不再被像素化 */
  background: var(--void);
  border: 1px solid var(--hairline-2);
  box-shadow:
    0 0 0 1px rgba(74, 214, 255, 0.05),
    0 24px 70px rgba(0, 0, 0, 0.55),
    inset 0 0 60px rgba(0, 0, 0, 0.4);
  filter: drop-shadow(0 0 24px rgba(255, 91, 58, 0.08));
  cursor: grab;
}
#game-canvas:active, #game:active {
  cursor: grabbing;
}

/* ==================== 3D 地图轴标签(由 Map3D 每帧投影定位) ==================== */
.axis-labels {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  overflow: visible;
}
.axis-label {
  position: absolute;
  top: 0;
  left: 0;
  font-family: var(--font-tech);
  font-size: 10px;
  color: var(--signal-cyan);
  letter-spacing: 0.06em;
  text-shadow: 0 0 6px rgba(0, 0, 0, 0.9), 0 0 12px rgba(0, 200, 220, 0.4);
  white-space: nowrap;
  transform: translate(-50%, -50%);
  will-change: transform, opacity;
  transition: opacity 0.2s ease;
  user-select: none;
}
.axis-label.row { color: var(--accent-orange, #ff5a3a); }
.axis-label.col { color: var(--signal-cyan, #4dd0e1); }

/* ==================== 地图缩放控件 ==================== */
.zoom-controls {
  position: absolute;
  top: 30px;
  right: 30px;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  background: linear-gradient(180deg, rgba(28, 32, 73, 0.85) 0%, rgba(14, 17, 41, 0.85) 100%);
  border: 1px solid rgba(74, 214, 255, 0.35);
  box-shadow: var(--shadow-deep), 0 0 0 1px rgba(74, 214, 255, 0.08);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}
.zoom-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: rgba(7, 9, 26, 0.55);
  border: 1px solid var(--hairline-2);
  color: var(--text);
  cursor: pointer;
  padding: 0;
  font-family: var(--font-mono);
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.15s;
}
.zoom-btn:hover {
  background: rgba(74, 214, 255, 0.18);
  color: var(--text-bright);
  border-color: var(--signal-cyan);
}
.zoom-btn:active {
  transform: scale(0.93);
}
.zoom-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}
.zoom-size {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 600;
  color: var(--text-bright);
  letter-spacing: 0.04em;
  min-width: 44px;
  text-align: center;
  padding: 0 4px;
  text-shadow: 0 0 4px rgba(74, 214, 255, 0.4);
}

/* ==================== 镜头归位按钮(画布左上角) ==================== */
.cam-reset-btn {
  position: absolute;
  top: 30px;
  left: 30px;
  z-index: 5;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 11px 6px 9px;
  background: linear-gradient(180deg, rgba(28, 32, 73, 0.85) 0%, rgba(14, 17, 41, 0.85) 100%);
  border: 1px solid rgba(255, 145, 96, 0.4);
  color: var(--mars-glow);
  font-family: var(--font-tech);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  backdrop-filter: blur(6px);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
  transition: background 0.18s ease, color 0.18s ease, transform 0.15s ease, border-color 0.18s ease;
}
.cam-reset-btn:hover {
  background: linear-gradient(180deg, rgba(60, 32, 18, 0.95) 0%, rgba(40, 22, 12, 0.95) 100%);
  color: #ffd9b0;
  border-color: var(--mars-glow);
}
.cam-reset-btn:active { transform: scale(0.95); }
.cam-reset-btn svg { display: block; opacity: 0.95; }
.cam-reset-label { line-height: 1; padding-top: 1px; }

/* 镜头操作提示(画布左下角小字) */
.cam-hint {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--text-faint);
  letter-spacing: 0.06em;
  pointer-events: none;
  opacity: 0.55;
  white-space: nowrap;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
}

/* ==================== 地图图例(默认隐藏,通过左下角 toggle 按钮展开) ==================== */
.legend-toggle {
  position: absolute;
  bottom: 12px;
  left: 12px;
  z-index: 5;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 9px 5px 7px;
  background: linear-gradient(180deg, rgba(7, 9, 26, 0.92) 0%, rgba(14, 17, 41, 0.92) 100%);
  border: 1px solid var(--hairline-2);
  color: var(--signal-cyan);
  font-family: var(--font-tech);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  backdrop-filter: blur(6px);
  clip-path: polygon(0 0, calc(100% - 5px) 0, 100% 5px, 100% 100%, 5px 100%, 0 calc(100% - 5px));
  transition: background 0.16s ease, color 0.16s ease, transform 0.16s ease;
}
.legend-toggle:hover {
  background: linear-gradient(180deg, rgba(20, 26, 60, 0.95) 0%, rgba(32, 40, 80, 0.95) 100%);
  color: #fff;
}
.legend-toggle:active { transform: scale(0.96); }
.legend-toggle[aria-expanded="true"] {
  color: #fff;
  background: linear-gradient(180deg, rgba(0, 200, 220, 0.35) 0%, rgba(0, 140, 180, 0.45) 100%);
}
.legend-toggle svg { display: block; opacity: 0.9; }
.legend-toggle-label { line-height: 1; padding-top: 1px; }

.legend {
  position: absolute;
  bottom: 44px;
  left: 12px;
  z-index: 4;
  background: linear-gradient(180deg, rgba(7, 9, 26, 0.92) 0%, rgba(14, 17, 41, 0.92) 100%);
  border: 1px solid var(--hairline-2);
  padding: 10px 12px 9px;
  font-family: var(--font-tech);
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  backdrop-filter: blur(6px);
  clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 6px 100%, 0 calc(100% - 6px));
  box-shadow: var(--shadow-deep);
  max-width: 240px;
  animation: legend-pop 0.18s ease-out;
}
.legend[hidden] { display: none; }

/* ==================== 路线罗盘(替代方向键弹窗) ==================== */
.route-pad {
  position: absolute;
  bottom: 44px;
  left: 12px;
  z-index: 5;
  display: grid;
  grid-template-columns: repeat(3, 34px);
  grid-template-rows: repeat(3, 34px) 26px;
  gap: 3px;
  padding: 8px;
  background: linear-gradient(180deg, rgba(7, 9, 26, 0.92) 0%, rgba(14, 17, 41, 0.92) 100%);
  border: 1px solid var(--hairline-2);
  box-shadow: var(--shadow-deep);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
  backdrop-filter: blur(6px);
  animation: route-pad-enter 0.25s ease-out;
}
body.mode-demo .route-pad { display: none; }
.route-pad[hidden] { display: none; }
@keyframes route-pad-enter {
  from { opacity: 0; transform: translateY(6px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.route-pad-btn {
  background: linear-gradient(180deg, rgba(36, 42, 90, 0.75) 0%, rgba(14, 17, 41, 0.75) 100%);
  border: 1px solid var(--hairline-2);
  color: var(--text-bright);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.15s cubic-bezier(0.2, 0.8, 0.2, 1);
  box-shadow: var(--shadow-inset);
  user-select: none;
}
.route-pad-btn:hover:not(:disabled) {
  background: linear-gradient(180deg, rgba(54, 62, 120, 0.9) 0%, rgba(24, 28, 66, 0.9) 100%);
  color: var(--signal-cyan);
  border-color: var(--signal-cyan);
  box-shadow: var(--glow-cyan);
}
.route-pad-btn:active:not(:disabled) { transform: scale(0.92); background: rgba(74, 214, 255, 0.18); }
.route-pad-btn:disabled { opacity: 0.35; cursor: default; }
.route-pad-up    { grid-column: 2; grid-row: 1; }
.route-pad-left  { grid-column: 1; grid-row: 2; }
.route-pad-center {
  grid-column: 2; grid-row: 2;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, rgba(10, 13, 34, 0.9) 0%, rgba(4, 3, 12, 0.9) 100%);
  color: var(--signal-amber);
  font-family: var(--font-tech);
  font-size: 14px;
  font-weight: 700;
  text-shadow: 0 0 10px rgba(255, 194, 74, 0.5);
  border: 1px solid rgba(255, 194, 74, 0.25);
  user-select: none;
}
.route-pad-right { grid-column: 3; grid-row: 2; }
.route-pad-down  { grid-column: 2; grid-row: 3; }
.route-pad-undo,
.route-pad-clear {
  grid-row: 4;
  background: transparent;
  border: 1px solid var(--hairline-2);
  color: var(--text-dim);
  font-family: var(--font-tech);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.2s;
}
.route-pad-undo  { grid-column: 1; }
.route-pad-clear { grid-column: 3; }
.route-pad-undo:hover,
.route-pad-clear:hover {
  color: var(--signal-amber);
  border-color: var(--signal-amber);
  box-shadow: var(--glow-amber);
}

@keyframes legend-pop {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.legend-title {
  font-size: 8.5px;
  color: var(--signal-cyan);
  text-transform: uppercase;
  letter-spacing: 0.32em;
  font-weight: 700;
  margin-bottom: 7px;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--hairline-2);
}
.legend-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 5px 8px;
  margin-bottom: 8px;
}
.legend-cell {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 10px;
  color: var(--text);
  letter-spacing: 0.02em;
  text-transform: none;
  font-family: var(--font-body);
}
.lg-chip {
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 700;
  line-height: 1;
  border: 1px solid rgba(255, 255, 255, 0.15);
  flex-shrink: 0;
}
.legend-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding-top: 6px;
  border-top: 1px solid var(--hairline-2);
  font-size: 10px;
  color: var(--text-dim);
  font-family: var(--font-body);
  letter-spacing: 0.02em;
  text-transform: none;
}
.legend-row > span:not(.lg-icon) { margin-right: 4px; }
.lg-icon {
  width: 12px;
  height: 12px;
  display: inline-block;
  flex-shrink: 0;
  position: relative;
}
.lg-icon-start {
  border: 1.5px solid var(--signal-cyan);
  border-radius: 50%;
  box-shadow: 0 0 4px rgba(74, 214, 255, 0.4);
}
.lg-icon-end {
  border: 1.5px solid var(--signal-green);
  border-radius: 1.5px;
  box-shadow: 0 0 4px rgba(42, 255, 168, 0.4);
}
.lg-icon-door {
  background: linear-gradient(180deg, #2a3050 0%, #15192c 100%);
  border: 1px solid #ffd46f;
}
.lg-icon-door::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 4px; height: 4px;
  margin: -2px 0 0 -2px;
  background: #ffd46f;
  border-radius: 50%;
}
.lg-icon-button {
  background: radial-gradient(circle, #b4ff8c 30%, #2affa8 60%, transparent 100%);
  border: 1px solid #2affa8;
  border-radius: 50%;
}

/* ==================== 提示气泡 ==================== */
.bubble {
  position: absolute;
  bottom: 42px;
  left: 50%;
  transform: translateX(-50%);
  max-width: 320px;
  background: linear-gradient(180deg, rgba(28, 32, 73, 0.95) 0%, rgba(14, 17, 41, 0.95) 100%);
  border: 1px solid var(--signal-cyan);
  color: var(--text-bright);
  padding: 13px 18px;
  font-size: 12.5px;
  font-family: var(--font-body);
  line-height: 1.55;
  box-shadow: var(--shadow-deep), var(--glow-cyan);
  opacity: 1;
  transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
  pointer-events: none;
  z-index: 6;
  clip-path: polygon(14px 0, 100% 0, 100% 100%, 0 100%, 0 14px);
  font-weight: 500;
  letter-spacing: 0.02em;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  white-space: nowrap;
}
.bubble::before {
  content: '';
  position: absolute;
  top: -1px; right: -1px;
  width: 6px; height: 6px;
  background: var(--signal-cyan);
  box-shadow: var(--glow-cyan);
}
.bubble.hidden { opacity: 0; transform: translateX(-50%) translateY(12px); pointer-events: none; }
.bubble.bubble-warn  { border-color: var(--signal-amber); box-shadow: var(--shadow-deep), var(--glow-amber); }
.bubble.bubble-warn::before { background: var(--signal-amber); box-shadow: var(--glow-amber); }
.bubble.bubble-error { border-color: var(--signal-red);   box-shadow: var(--shadow-deep), var(--glow-red); }
.bubble.bubble-error::before { background: var(--signal-red); box-shadow: var(--glow-red); }
.bubble.bubble-success { border-color: var(--signal-green); box-shadow: var(--shadow-deep), var(--glow-green); }
.bubble.bubble-success::before { background: var(--signal-green); box-shadow: var(--glow-green); }
.bubble.bubble-ok    { border-color: var(--signal-cyan); }

/* ==================== 提示栏 ==================== */
.hint-bar {
  padding: 10px 22px;
  background: rgba(7, 9, 26, 0.6);
  border-top: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
}
.hint-prefix {
  font-family: var(--font-tech);
  font-size: 9px;
  letter-spacing: 0.32em;
  color: var(--mars-glow);
  border: 1px solid rgba(255, 145, 96, 0.45);
  padding: 4px 8px;
  background: rgba(255, 91, 58, 0.08);
  text-transform: uppercase;
  font-weight: 700;
}
.hint-text { color: var(--text-dim); font-family: var(--font-body); letter-spacing: 0.02em; }

/* ==================== 代码区 ==================== */
.code-frame {
  flex: 1;
  position: relative;
  display: flex;
  background: var(--term-bg);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  overflow: hidden;
  min-height: 0;
  background-image:
    linear-gradient(180deg, rgba(74, 214, 255, 0.02) 0%, transparent 2px, transparent 100%);
  background-size: 100% var(--code-lh);
}

.code-gutter {
  flex-shrink: 0;
  width: 60px;
  background: var(--term-bg-2);
  color: var(--text-faint);
  font-family: var(--font-code);
  font-size: var(--code-size);
  font-weight: 500;
  line-height: var(--code-lh);
  padding: 14px 8px 14px 0;
  text-align: right;
  user-select: none;
  border-right: 1px solid var(--hairline);
  overflow: hidden;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}
.code-gutter .ln {
  padding-right: 14px;
  height: var(--code-lh);
  position: relative;
  color: var(--text-faint);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  transition: color 0.25s ease, background 0.25s ease;
}
.code-gutter .ln.active {
  color: var(--signal-cyan);
  background: linear-gradient(90deg, rgba(74, 214, 255, 0.18) 0%, rgba(74, 214, 255, 0.04) 100%);
  font-weight: 700;
  text-shadow: 0 0 8px rgba(74, 214, 255, 0.55);
}
.code-gutter .ln.active::before {
  content: '▶';
  position: absolute;
  left: 4px;
  color: var(--signal-cyan);
  text-shadow: 0 0 8px var(--signal-cyan), 0 0 16px rgba(74, 214, 255, 0.6);
  font-size: 10px;
  animation: ln-marker-pulse 0.9s ease-in-out infinite;
}
@keyframes ln-marker-pulse {
  0%, 100% { opacity: 1; transform: translateX(0); }
  50%      { opacity: 0.45; transform: translateX(2px); }
}

#editor-textarea {
  position: absolute;
  top: 0; left: 60px; right: 0; bottom: 0;
  margin: 0;
  padding: 14px 18px;
  font-family: var(--font-code);
  font-size: var(--code-size);
  font-weight: 700;
  line-height: var(--code-lh);
  white-space: pre;
  overflow: auto;
  border: 0;
  background: transparent;
  color: var(--text-mono);
  tab-size: 4;
  -moz-tab-size: 4;
  letter-spacing: 0.01em;
  box-sizing: border-box;
  /* 禁用 ligatures 与 stylistic sets,避免 <>/ 等字符被字体特性替换 */
  font-feature-settings: normal;
  outline: none;
  caret-color: var(--signal-cyan);
}
#editor-textarea:focus {
  box-shadow: inset 0 0 0 1px rgba(74, 214, 255, 0.25);
}
#editor-textarea::selection {
  background: rgba(74, 214, 255, 0.3);
  color: var(--text-mono);
}
/* contenteditable 内部每行容器 */
#editor-textarea .code-line {
  display: block;
  min-height: var(--code-lh);
  padding: 0 6px;
  margin: 0 -6px;
  border-left: 3px solid transparent;
  transition: background 0.2s ease, border-color 0.2s ease;
}
/* 当前执行行:左侧粗条 + 背景高亮(左右比对更清晰) */
#editor-textarea .code-line.line-active {
  background: linear-gradient(90deg,
    rgba(74, 214, 255, 0.22) 0%,
    rgba(74, 214, 255, 0.08) 60%,
    rgba(74, 214, 255, 0.02) 100%);
  border-left-color: var(--signal-cyan);
  box-shadow: inset 0 0 18px rgba(74, 214, 255, 0.10);
}
/* 已成功执行的行:轻微绿色提示 */
#editor-textarea .code-line.line-success {
  background: rgba(80, 220, 120, 0.06);
  border-left-color: rgba(80, 220, 120, 0.35);
}
/* 出错行:红色提示 */
#editor-textarea .code-line.line-error {
  background: rgba(255, 80, 80, 0.12);
  border-left-color: var(--signal-red);
}

/* 语法高亮配色(配合 Fira Code 500/600,色相+字重双重区分) */
.tok-kw  { color: var(--kw); font-weight: 700; }
.tok-str { color: var(--str); font-weight: 500; }
.tok-num { color: var(--num); font-weight: 600; }
.tok-fn  { color: var(--fn); font-weight: 600; text-shadow: 0 0 6px rgba(74, 214, 255, 0.45); }
.tok-com { color: var(--com); font-style: italic; font-weight: 400; }
.tok-op  { color: var(--op); font-weight: 600; }
.tok-pun { color: var(--text-dim); font-weight: 500; }

/* ==================== 控制台输出 ==================== */
.code-foot {
  background: linear-gradient(180deg, var(--term-bg-2) 0%, var(--term-bg) 100%);
  padding: 12px 20px;
  border-bottom: 1px solid var(--hairline);
  min-height: 92px;
  max-height: 180px;
  overflow: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  position: relative;
}
.code-foot::before {
  content: 'console · stdout';
  position: absolute;
  top: 4px; right: 12px;
  font-size: 8px;
  letter-spacing: 0.3em;
  color: var(--text-faint);
  font-family: var(--font-tech);
  text-transform: uppercase;
}
.console-host {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--text-mono);
  font-family: var(--font-mono);
  font-size: 14.4px;   /* 12px × 1.2 */
  font-weight: 600;
}
.console-line {
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.55;
  padding: 1px 0;
  letter-spacing: 0.01em;
  font-size: 12px;
  opacity: 0;
  transform: translateX(-4px);
  animation: console-in 0.3s ease forwards;
}
@keyframes console-in {
  to { opacity: 1; transform: translateX(0); }
}
.console-line::before {
  content: '›';
  color: var(--signal-cyan);
  font-weight: 700;
  margin-right: 8px;
  text-shadow: 0 0 6px var(--signal-cyan);
}
.console-out  { color: var(--text-bright); }
.console-err  { color: var(--signal-red); }
.console-warn { color: var(--signal-amber); }
.console-ok   { color: var(--signal-green); }

/* ==================== 代码标签(右上 tabs 风格) ==================== */
.code-tabs {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0;
}
.code-tab {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  padding: 4px 12px;
  border: 1px solid var(--hairline-2);
  background: rgba(7, 9, 26, 0.5);
}
.code-tab.active {
  color: var(--signal-cyan);
  background: rgba(74, 214, 255, 0.08);
  border-color: rgba(74, 214, 255, 0.4);
  text-shadow: 0 0 6px rgba(74, 214, 255, 0.3);
}

/* ==================== 控件区 ==================== */
.controls {
  padding: 12px 22px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: linear-gradient(180deg, rgba(7, 9, 26, 0.4) 0%, var(--void) 100%);
  border-top: 1px solid var(--hairline);
}
/* 单行容器:水平 flex,允许 wrap(更窄屏下不会横向溢出) */
.controls-row {
  display: flex;
  align-items: stretch;
  gap: 10px;
  flex-wrap: wrap;
  min-width: 0;
}
/* 第一行:执行链路(主操作) */
.controls-row-exec {
  /* 让主操作按钮等分,撑满整行(等宽) */
  /* 留 10px gap,5 个按钮 → 每个 (100% - 40px) / 5 */
  flex-wrap: nowrap;
}
/* 第二行:辅助控制(从操作) */
.controls-row-util {
  /* 重置 / 方向键 在左,速度滑块在右 */
}
.controls-row-util .speed-ctl {
  margin-left: auto;
}
.ctl {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(180deg, rgba(28, 32, 73, 0.7) 0%, rgba(14, 17, 41, 0.7) 100%);
  border: 1px solid var(--hairline-2);
  color: var(--text);
  padding: 9px 16px;
  font-family: var(--font-tech);
  font-size: 10.5px;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
  position: relative;
  box-shadow: var(--shadow-inset);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
  /* 行内项不伸缩,固定由内容决定 */
  flex: 0 0 auto;
  min-width: 0;
  white-space: nowrap;
}
.controls-row-exec > .ctl {
  /* 第一行主操作:四等分宽度,撑满整行 */
  flex: 1 1 0;
  min-width: 70px;
}
.ctl::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 6px; height: 6px;
  background: var(--signal-cyan);
  opacity: 0.6;
}
.ctl::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 8px; height: 8px;
  background: linear-gradient(225deg, var(--space-2) 50%, transparent 50%);
  z-index: 1;
}
.ctl:hover {
  background: linear-gradient(180deg, rgba(36, 42, 90, 0.9) 0%, rgba(20, 24, 56, 0.9) 100%);
  border-color: rgba(74, 214, 255, 0.5);
  color: var(--signal-cyan);
  transform: translateY(-1px);
  box-shadow: var(--shadow-inset), 0 6px 18px rgba(74, 214, 255, 0.18);
}
.ctl:hover::before { opacity: 1; box-shadow: var(--glow-cyan); }
.ctl:active { transform: translateY(0); }
.ctl:disabled { opacity: 0.32; cursor: not-allowed; transform: none; }
.ctl svg { width: 13px; height: 13px; flex-shrink: 0; }

.ctl-primary {
  background: linear-gradient(180deg, var(--mars-core) 0%, var(--mars-deep) 100%);
  color: #fff;
  border-color: var(--mars-glow);
  box-shadow: var(--shadow-inset), var(--glow-mars);
}
.ctl-primary::before { background: var(--mars-glow); opacity: 1; }
.ctl-primary:hover {
  background: linear-gradient(180deg, var(--mars-glow) 0%, var(--mars-core) 100%);
  color: #fff;
  border-color: var(--mars-glow);
  box-shadow: var(--shadow-inset), 0 8px 24px rgba(255, 91, 58, 0.4);
  text-shadow: 0 0 6px rgba(255, 255, 255, 0.5);
}

/* 运行按钮状态:运行中(暂停态)/ 已暂停(继续态) */
#run-btn.running {
  background: linear-gradient(180deg, #ffb347 0%, #ff8c1a 100%);
  border-color: #ffd700;
  box-shadow: var(--shadow-inset), 0 0 16px rgba(255, 179, 71, 0.6);
  animation: runBtnPulse 1.4s ease-in-out infinite;
}
#run-btn.paused {
  background: linear-gradient(180deg, #4dd0e1 0%, #00838f 100%);
  border-color: #4dd0e1;
  box-shadow: var(--shadow-inset), 0 0 16px rgba(77, 208, 225, 0.6);
}
@keyframes runBtnPulse {
  0%, 100% { box-shadow: var(--shadow-inset), 0 0 12px rgba(255, 179, 71, 0.5); }
  50% { box-shadow: var(--shadow-inset), 0 0 22px rgba(255, 179, 71, 0.85); }
}

.speed-ctl {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 7px 16px;
  border: 1px solid var(--hairline-2);
  background: rgba(7, 9, 26, 0.55);
  box-shadow: var(--shadow-inset);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}
.speed-label {
  font-size: 9px;
  color: var(--text-faint);
  letter-spacing: 0.32em;
  font-family: var(--font-tech);
  text-transform: uppercase;
  font-weight: 400;
}
.speed-value {
  font-size: 12px;
  color: var(--signal-amber);
  font-family: var(--font-mono);
  font-weight: 600;
  min-width: 40px;
  text-align: right;
  text-shadow: 0 0 6px var(--signal-amber);
}
input[type=range] {
  -webkit-appearance: none;
  appearance: none;
  width: 110px;
  height: 3px;
  background: linear-gradient(90deg, var(--hairline-2) 0%, var(--hairline) 100%);
  outline: none;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  background: var(--signal-cyan);
  cursor: pointer;
  border: 2px solid var(--void);
  box-shadow: var(--glow-cyan);
  border-radius: 0;
  transform: rotate(45deg);
}
input[type=range]::-moz-range-thumb {
  width: 14px; height: 14px;
  background: var(--signal-cyan);
  cursor: pointer;
  border: 2px solid var(--void);
  border-radius: 0;
}

/* ==================== 模态框 ==================== */
.modal, .end-modal {
  position: fixed; inset: 0;
  background: rgba(4, 3, 12, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  display: grid;
  place-items: center;
  z-index: 100;
}
.end-modal.hidden { display: none; }
.modal[hidden] { display: none; }
.modal-card, .end-card {
  background: linear-gradient(180deg, rgba(36, 42, 90, 0.95) 0%, rgba(14, 17, 41, 0.95) 100%);
  border: 1px solid var(--hairline-2);
  padding: 38px 56px 32px;
  min-width: 440px;
  text-align: center;
  position: relative;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
  box-shadow: var(--shadow-deep), 0 0 80px rgba(74, 214, 255, 0.12);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.modal-card::before, .end-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--mars-core) 18%, var(--signal-amber) 50%, var(--signal-cyan) 82%, transparent);
}
.modal-card::after, .end-card::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 24px; height: 24px;
  border-top: 1.5px solid var(--mars-glow);
  border-right: 1.5px solid var(--mars-glow);
  box-shadow: -2px -2px 12px rgba(255, 145, 96, 0.4);
}
.end-eyebrow {
  font-family: var(--font-tech);
  font-size: 10px;
  letter-spacing: 0.5em;
  color: var(--signal-cyan);
  margin-bottom: 12px;
  text-transform: uppercase;
  text-shadow: 0 0 8px rgba(74, 214, 255, 0.3);
}
.modal-icon {
  font-size: 48px;
  margin-bottom: 12px;
  line-height: 1;
  filter: drop-shadow(0 0 12px var(--signal-cyan));
}
.modal-card h3, .end-card h3 {
  margin: 0 0 8px;
  font-size: 28px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-bright);
  font-family: var(--font-display);
  font-weight: 500;
}
.end-title.end-win  { color: var(--signal-green); text-shadow: var(--glow-green); }
.end-title.end-fail { color: var(--signal-red);   text-shadow: var(--glow-red); }
.modal-card p, .end-card p {
  margin: 0 0 16px;
  color: var(--text-dim);
  font-size: 13px;
  letter-spacing: 0.04em;
  font-family: var(--font-body);
}
.modal-stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin: 22px 0 28px;
  font-family: var(--font-mono);
}
.modal-stat { text-align: center; }
.modal-stat-value {
  font-size: 28px;
  color: var(--signal-cyan);
  font-weight: 700;
  text-shadow: 0 0 8px rgba(74, 214, 255, 0.4);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}
.modal-stat-label {
  font-size: 9px;
  color: var(--text-faint);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  font-weight: 600;
  margin-top: 6px;
  font-family: var(--font-tech);
}
.modal-actions, .end-actions { display: flex; gap: 12px; justify-content: center; }

/* ==================== Toast(右下角克制通知) ==================== */
#toast-host {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}
.toast {
  min-width: 240px;
  max-width: 340px;
  background: linear-gradient(180deg, rgba(36, 42, 90, 0.96) 0%, rgba(14, 17, 41, 0.96) 100%);
  border: 1px solid rgba(74, 214, 255, 0.55);
  padding: 12px 18px 13px;
  box-shadow:
    var(--shadow-deep),
    0 0 30px rgba(74, 214, 255, 0.30),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  position: relative;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  font-family: var(--font-body);
  letter-spacing: 0.02em;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.toast::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: var(--signal-cyan);
  box-shadow: 0 0 10px var(--signal-cyan);
}
.toast-title {
  font-family: var(--font-tech);
  font-size: 11px;
  letter-spacing: 0.36em;
  color: var(--signal-cyan);
  font-weight: 700;
  text-shadow: 0 0 8px rgba(74, 214, 255, 0.45);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.toast-body {
  font-size: 12.5px;
  color: var(--text-bright);
  font-weight: 500;
  line-height: 1.5;
}
.toast-success {
  border-color: rgba(42, 255, 168, 0.6);
  box-shadow:
    var(--shadow-deep),
    0 0 30px rgba(42, 255, 168, 0.32),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.toast-success::before { background: var(--signal-green); box-shadow: 0 0 10px var(--signal-green); }
.toast-success .toast-title { color: var(--signal-green); text-shadow: var(--glow-green); }
.toast-error {
  border-color: rgba(255, 74, 106, 0.6);
  box-shadow:
    var(--shadow-deep),
    0 0 30px rgba(255, 74, 106, 0.32),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.toast-error::before { background: var(--signal-red); box-shadow: 0 0 10px var(--signal-red); }
.toast-error .toast-title { color: var(--signal-red); text-shadow: var(--glow-red); }

/* ==================== 响应式 ==================== */
@media (max-width: 1280px) {
  .workspace { grid-template-columns: 1.25fr 1fr; }
  .brand { min-width: 280px; padding: 0 22px 0 20px; }
  .mode-btn { padding: 0 22px; }
  .telemetry { padding: 0 22px 0 18px; }
}
@media (max-width: 1080px) {
  .topbar { flex-wrap: wrap; height: auto; }
  .telemetry { display: none; }
  .mode-switch { margin: 0; }
}
@media (max-width: 960px) {
  html, body { overflow: auto; }
  .workspace {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr;
  }
  .topbar { height: auto; flex-direction: column; }
  .brand { padding: 12px 20px; }
  .mode-switch { margin: 0 20px 12px; flex-wrap: wrap; }
  .route-hint { flex-direction: column; align-items: flex-start; gap: 8px; padding: 12px 18px; }
  .route-hint-text { font-size: 10.5px;
  }
}

/* ============================================================
 * UI 美化增强 v2 — Mission Console Polish
 * ========================================================== */

/* === 自定义滚动条(代码编辑器 + 终端) === */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track {
  background: rgba(7, 9, 26, 0.6);
  border-left: 1px solid var(--hairline);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(74, 214, 255, 0.25) 0%, rgba(74, 214, 255, 0.12) 100%);
  border-radius: 0;
}
::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, rgba(74, 214, 255, 0.45) 0%, rgba(74, 214, 255, 0.25) 100%);
}
::-webkit-scrollbar-corner { background: transparent; }

/* === 面板内发光(增强深度感) === */
.panel {
  box-shadow:
    var(--shadow-deep),
    inset 0 1px 0 rgba(255, 255, 255, 0.03),
    inset 0 0 40px rgba(74, 214, 255, 0.015);
}

/* === 3D 画布增强边框(动态微光) === */
#game-canvas, #game {
  border: 1px solid rgba(74, 214, 255, 0.25);
  box-shadow:
    0 0 0 1px rgba(74, 214, 255, 0.06),
    0 0 30px rgba(74, 214, 255, 0.08),
    0 24px 70px rgba(0, 0, 0, 0.55),
    inset 0 0 60px rgba(0, 0, 0, 0.4);
  animation: canvas-breathe 6s ease-in-out infinite;
}
@keyframes canvas-breathe {
  0%, 100% {
    box-shadow:
      0 0 0 1px rgba(74, 214, 255, 0.06),
      0 0 30px rgba(74, 214, 255, 0.08),
      0 24px 70px rgba(0, 0, 0, 0.55),
      inset 0 0 60px rgba(0, 0, 0, 0.4);
  }
  50% {
    box-shadow:
      0 0 0 1px rgba(74, 214, 255, 0.10),
      0 0 40px rgba(74, 214, 255, 0.14),
      0 24px 70px rgba(0, 0, 0, 0.55),
      inset 0 0 60px rgba(0, 0, 0, 0.4);
  }
}

/* === 按钮增强(更精致的交互反馈) === */
.ctl {
  transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.3s ease;
}
.ctl:hover {
  box-shadow:
    var(--shadow-inset),
    0 6px 18px rgba(74, 214, 255, 0.18),
    inset 0 0 12px rgba(74, 214, 255, 0.06);
}
.ctl-primary {
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
}
.ctl-primary:hover {
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.6);
  box-shadow:
    var(--shadow-inset),
    0 8px 24px rgba(255, 91, 58, 0.4),
    0 0 20px rgba(255, 145, 96, 0.2),
    inset 0 0 12px rgba(255, 255, 255, 0.08);
}

/* === 状态芯片增强(更清晰的视觉层次) === */
.chip {
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.chip:hover {
  border-color: rgba(74, 214, 255, 0.3);
  box-shadow: var(--shadow-inset), 0 0 12px rgba(74, 214, 255, 0.08);
}

/* === 能量条增强(流动光泽) === */
.energy-bar {
  position: relative;
}
.energy-bar > .energy-fill {
  position: relative;
  overflow: hidden;
}
.energy-bar > .energy-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.25) 50%,
    transparent 100%);
  animation: energy-shine 2.5s ease-in-out infinite;
}
@keyframes energy-shine {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* === 终端输出增强 === */
.terminal-output {
  font-variant-ligatures: contextual;
}
.terminal-output .log-line {
  padding: 2px 0;
  border-bottom: 1px solid rgba(155, 178, 255, 0.03);
  transition: background 0.15s ease;
}
.terminal-output .log-line:hover {
  background: rgba(74, 214, 255, 0.03);
}

/* === 面板入场动画 === */
.panel {
  animation: panel-enter 0.5s cubic-bezier(0.2, 0.8, 0.2, 1) backwards;
}
.panel-map { animation-delay: 0.05s; }
.panel-code { animation-delay: 0.12s; }
@keyframes panel-enter {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* === 顶栏入场动画 === */
.topbar {
  animation: topbar-enter 0.4s cubic-bezier(0.2, 0.8, 0.2, 1) backwards;
}
@keyframes topbar-enter {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* === 镜头归位按钮增强 === */
.cam-reset-btn {
  transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.cam-reset-btn:hover {
  box-shadow: 0 0 16px rgba(255, 145, 96, 0.3);
}

/* === 缩放控件增强 === */
.zoom-controls {
  transition: box-shadow 0.3s ease;
}
.zoom-controls:hover {
  box-shadow: var(--shadow-deep), 0 0 0 1px rgba(74, 214, 255, 0.15), 0 0 16px rgba(74, 214, 255, 0.08);
}
.zoom-btn {
  transition: all 0.15s ease;
}
.zoom-btn:hover {
  color: var(--signal-cyan);
  text-shadow: var(--glow-cyan);
}

/* === 轴标签增强(更清晰) === */
.axis-label {
  font-weight: 600;
  text-shadow:
    0 0 4px rgba(0, 0, 0, 0.95),
    0 0 8px rgba(0, 0, 0, 0.8),
    0 0 12px rgba(0, 200, 220, 0.3);
}

/* === 模式按钮增强 === */
.mode-btn {
  transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.mode-btn:hover {
  background: rgba(74, 214, 255, 0.06);
}
.mode-btn.active {
  background: rgba(74, 214, 255, 0.04);
}

/* === 图例面板增强 === */
.legend-panel {
  animation: legend-enter 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}
@keyframes legend-enter {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* === 选中文本增强 === */
::selection {
  background: rgba(74, 214, 255, 0.25);
  color: var(--text-bright);
  text-shadow: 0 0 4px rgba(74, 214, 255, 0.4);
}

/* === 焦点可见性(无障碍) === */
.ctl:focus-visible,
.mode-btn:focus-visible,
.zoom-btn:focus-visible,
.cam-reset-btn:focus-visible,
.legend-toggle:focus-visible,
.dpad-btn:focus-visible,
.dpad-action:focus-visible,
.dpad-close:focus-visible {
  outline: 1px solid var(--signal-cyan);
  outline-offset: 2px;
}

/* ============================================================
 * 方向键输入悬浮面板(D-Pad Overlay)
 * ========================================================== */
.dpad-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 3, 12, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: grid;
  place-items: center;
  z-index: 90;
  animation: dpad-fade-in 0.2s ease;
}
.dpad-overlay.hidden { display: none; }
@keyframes dpad-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.dpad-panel {
  background: linear-gradient(180deg, rgba(28, 32, 73, 0.96) 0%, rgba(10, 13, 34, 0.96) 100%);
  border: 1px solid var(--hairline-2);
  padding: 24px 32px 22px;
  min-width: 300px;
  position: relative;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
  box-shadow: var(--shadow-deep), 0 0 60px rgba(74, 214, 255, 0.10);
}
.dpad-panel::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--signal-cyan) 30%, var(--signal-violet) 70%, transparent);
}

.dpad-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}
.dpad-title {
  font-family: var(--font-tech);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--signal-cyan);
  text-shadow: 0 0 8px rgba(74, 214, 255, 0.4);
}
.dpad-close {
  background: transparent;
  border: 1px solid var(--hairline-2);
  color: var(--text-dim);
  width: 26px; height: 26px;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.2s;
}
.dpad-close:hover {
  color: var(--signal-red);
  border-color: var(--signal-red);
  box-shadow: var(--glow-red);
}

.dpad-hint {
  font-size: 11px;
  color: var(--text-dim);
  margin-bottom: 18px;
  text-align: center;
  letter-spacing: 0.04em;
}

/* 十字方向键布局:3×3 grid,中心为步数显示 */
.dpad-cross {
  display: grid;
  grid-template-columns: repeat(3, 64px);
  grid-template-rows: repeat(3, 64px);
  gap: 6px;
  justify-content: center;
  margin: 0 auto 16px;
}
.dpad-btn {
  background: linear-gradient(180deg, rgba(36, 42, 90, 0.8) 0%, rgba(14, 17, 41, 0.8) 100%);
  border: 1px solid var(--hairline-2);
  color: var(--text-bright);
  font-size: 24px;
  font-weight: 600;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.15s cubic-bezier(0.2, 0.8, 0.2, 1);
  position: relative;
  box-shadow: var(--shadow-inset);
  user-select: none;
}
.dpad-btn:hover:not(:disabled) {
  background: linear-gradient(180deg, rgba(54, 62, 120, 0.9) 0%, rgba(24, 28, 66, 0.9) 100%);
  color: var(--signal-cyan);
  border-color: var(--signal-cyan);
  box-shadow: var(--glow-cyan);
}
.dpad-btn:active:not(:disabled) {
  transform: scale(0.92);
  background: rgba(74, 214, 255, 0.18);
}
.dpad-btn:disabled {
  cursor: default;
}

/* 十字位置 */
.dpad-up    { grid-column: 2; grid-row: 1; }
.dpad-left  { grid-column: 1; grid-row: 2; }
.dpad-center{ grid-column: 2; grid-row: 2; }
.dpad-right { grid-column: 3; grid-row: 2; }
.dpad-down  { grid-column: 2; grid-row: 3; }

/* 中心步数显示 */
.dpad-center {
  background: linear-gradient(180deg, rgba(10, 13, 34, 0.9) 0%, rgba(4, 3, 12, 0.9) 100%);
  color: var(--signal-amber);
  font-family: var(--font-tech);
  font-size: 22px;
  font-weight: 700;
  text-shadow: 0 0 10px rgba(255, 194, 74, 0.5);
  border-color: rgba(255, 194, 74, 0.25);
}

/* 撤销 / 清空 */
.dpad-actions {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 12px;
}
.dpad-action {
  background: transparent;
  border: 1px solid var(--hairline-2);
  color: var(--text-dim);
  padding: 7px 16px;
  font-family: var(--font-tech);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
}
.dpad-action:hover {
  color: var(--signal-amber);
  border-color: var(--signal-amber);
  box-shadow: var(--glow-amber);
}

/* moves 预览 */
.dpad-preview {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--signal-green);
  background: rgba(5, 7, 20, 0.6);
  border: 1px solid var(--hairline);
  padding: 8px 12px;
  text-align: center;
  word-break: break-all;
  max-height: 60px;
  overflow-y: auto;
  letter-spacing: 0.02em;
}
.dpad-preview:empty::before {
  content: 'moves = []';
  color: var(--text-faint);
}

/* demo 模式下隐藏方向键触发按钮(只实操用) */
body.mode-demo #dpad-toggle { display: none; }

/* dpad-toggle 上的步数徽章(常驻显示当前 moves 数量) */
.dpad-badge {
  position: absolute;
  top: -6px;
  right: -6px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 9px;
  background: var(--mars-glow, #ff5b3a);
  color: #fff;
  font: 600 11px/18px 'JetBrains Mono', monospace;
  text-align: center;
  box-shadow: 0 0 8px var(--mars-glow, rgba(255,91,58,0.6));
  pointer-events: none;
  transition: transform 0.2s ease;
}
.dpad-badge.empty { background: rgba(255,255,255,0.12); box-shadow: none; color: rgba(255,255,255,0.4); }
.dpad-badge.hidden { display: none; }
#dpad-toggle { position: relative; }
.dpad-badge:not(.hidden):not(.empty) { animation: badgePulse 2s ease-in-out infinite; }
@keyframes badgePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.12); }
}

/* ============================================================
 * 新手引导(Tutorial)
 * - .tut-overlay:全屏遮罩(欢迎 / 完成步)
 * - .tut-spotlight:box-shadow 挖洞高亮目标元素
 * - .tut-bubble:智能定位引导气泡
 * ========================================================== */
.tut-overlay {
  position: fixed;
  inset: 0;
  z-index: 10002;
  background: rgba(4, 3, 12, 0.82);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: tut-fade 0.25s ease;
}
.tut-overlay.hidden { display: none; }
@keyframes tut-fade { from { opacity: 0; } to { opacity: 1; } }

.tut-card {
  width: min(460px, 92vw);
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--hairline-2);
  border-radius: 14px;
  padding: 30px 30px 22px;
  position: relative;
  box-shadow: var(--shadow-deep), 0 0 48px rgba(74, 214, 255, 0.10);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}
.tut-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--signal-cyan) 30%, var(--mars-glow) 70%, transparent);
}
.tut-card-eyebrow {
  font-family: var(--font-tech);
  font-size: 10px;
  letter-spacing: 0.36em;
  color: var(--signal-cyan);
  margin-bottom: 12px;
  text-transform: uppercase;
  text-shadow: 0 0 8px rgba(74, 214, 255, 0.3);
}
.tut-card-title {
  margin: 0 0 14px;
  font-size: 22px;
  color: var(--text-bright);
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: 0.04em;
}
.tut-card-body {
  margin: 0 0 24px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text);
  letter-spacing: 0.02em;
}
.tut-card-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

/* 挖洞高亮:超大扩散阴影遮住其余区域,目标处透出 */
.tut-spotlight {
  position: fixed;
  z-index: 10001;
  border-radius: 8px;
  box-shadow: 0 0 0 9999px rgba(4, 3, 12, 0.78);
  pointer-events: none;
  transition: left 0.25s ease, top 0.25s ease, width 0.25s ease, height 0.25s ease;
}
.tut-spotlight.hidden { display: none; }
.tut-spotlight::after {
  content: '';
  position: absolute;
  inset: -3px;
  border: 2px solid var(--signal-cyan);
  border-radius: 10px;
  pointer-events: none;
  animation: tut-pulse 1.4s ease-in-out infinite;
}
@keyframes tut-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(74, 214, 255, 0.55); opacity: 1; }
  50%      { box-shadow: 0 0 0 8px rgba(74, 214, 255, 0);   opacity: 0.65; }
}

/* 引导气泡 */
.tut-bubble {
  position: fixed;
  z-index: 10003;
  width: 320px;
  max-width: 92vw;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--signal-cyan);
  border-radius: 12px;
  padding: 16px 18px 14px;
  box-shadow: var(--shadow-deep), 0 0 24px rgba(74, 214, 255, 0.18);
  color: var(--text);
}
.tut-bubble.hidden { display: none; }
.tut-bubble-close {
  position: absolute;
  top: 8px;
  right: 10px;
  width: 22px;
  height: 22px;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  padding: 0;
}
.tut-bubble-close:hover { color: var(--text-bright); }
.tut-bubble-eyebrow {
  font-family: var(--font-tech);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--signal-cyan);
  margin-bottom: 6px;
  text-transform: uppercase;
}
.tut-bubble-title {
  font-size: 15px;
  color: var(--text-bright);
  margin-bottom: 8px;
  font-weight: 600;
  letter-spacing: 0.03em;
}
.tut-bubble-body {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--text);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}
.tut-bubble-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  align-items: center;
}

/* 引导按钮 */
.tut-btn {
  font-family: var(--font-body);
  font-size: 13px;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s;
  letter-spacing: 0.02em;
}
.tut-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.tut-btn-sm { padding: 6px 12px; font-size: 12px; }
.tut-btn-primary {
  background: var(--signal-cyan);
  color: var(--void);
  border-color: var(--signal-cyan);
  font-weight: 600;
}
.tut-btn-primary:not(:disabled):hover { background: var(--signal-cyan-d); }
.tut-btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--hairline-2);
}
.tut-btn-ghost:hover { border-color: var(--signal-cyan); color: var(--signal-cyan); }
.tut-btn-skip {
  background: transparent;
  color: var(--text-dim);
  border-color: transparent;
  margin-left: auto;
}
.tut-btn-skip:hover { color: var(--text); }

/* 顶栏「引导」按钮(琥珀色区分) */
.mode-btn-tutorial {
  border-color: rgba(255, 194, 74, 0.3);
  color: var(--signal-amber);
}
.mode-btn-tutorial:hover {
  border-color: var(--signal-amber);
  color: var(--signal-amber);
  background: rgba(255, 194, 74, 0.06);
}
.mode-btn-tutorial .mode-icon {
  font-size: 14px;
  font-weight: 700;
}

/* 无障碍:引导按钮焦点可见 */
.tut-btn:focus-visible,
.mode-btn-tutorial:focus-visible {
  outline: 1px solid var(--signal-cyan);
  outline-offset: 2px;
}

/* ============================================================
 * 代码行执行反馈 — line badge + 行级状态
 * 设计目标:让 print 输出与代码行号一一对应,并把每条语句的
 *          执行结果(success / error)直接绘在代码行上。
 * ========================================================== */

/* 控制台输出前缀行号徽章 */
.console-line .line-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 700;
  color: var(--signal-cyan);
  background: rgba(74, 214, 255, 0.10);
  border: 1px solid rgba(74, 214, 255, 0.32);
  padding: 1px 5px 0;
  margin-right: 8px;
  letter-spacing: 0.06em;
  border-radius: 2px;
  text-shadow: 0 0 4px rgba(74, 214, 255, 0.4);
  vertical-align: 1px;
  pointer-events: none;
  min-width: 26px;
  text-align: center;
}
.console-line.console-err .line-badge {
  color: var(--signal-red);
  background: rgba(255, 74, 106, 0.10);
  border-color: rgba(255, 74, 106, 0.40);
  text-shadow: 0 0 4px rgba(255, 74, 106, 0.5);
}
.console-line.console-warn .line-badge {
  color: var(--signal-amber);
  background: rgba(255, 194, 74, 0.10);
  border-color: rgba(255, 194, 74, 0.40);
  text-shadow: 0 0 4px rgba(255, 194, 74, 0.5);
}

/* 行号栏状态同步(行号右侧小 ✓/✕) */
.code-gutter .ln.ln-success {
  color: var(--signal-green);
  text-shadow: 0 0 6px rgba(42, 255, 168, 0.5);
}
.code-gutter .ln.ln-success::after {
  content: ' ✓';
  color: var(--signal-green);
  font-size: 9px;
  margin-left: 1px;
}
.code-gutter .ln.ln-error {
  color: var(--signal-red);
  text-shadow: 0 0 6px rgba(255, 74, 106, 0.5);
}
.code-gutter .ln.ln-error::after {
  content: ' ✕';
  color: var(--signal-red);
  font-size: 9px;
  margin-left: 1px;
}

/* 降低动效偏好:关闭脉冲 */
@media (prefers-reduced-motion: reduce) {
  .tut-spotlight::after { animation: none; }
  .tut-overlay { animation: none; }
}