/* ============================================================
 *  DECK · 终端任务控制台风格导航站
 *  配色 / 字体 / 氛围都在这里;改 CSS 变量即可快速换肤。
 * ============================================================ */

:root {
  /* —— 底色 —— */
  --bg:          #090a0d;
  --bg-soft:     #0c0e13;
  --surface:     #111419;
  --surface-2:   #161a21;

  /* —— 描边 —— */
  --line:        rgba(255, 255, 255, 0.07);
  --line-strong: rgba(255, 255, 255, 0.14);

  /* —— 文字 —— */
  --text:        #e8ebf1;
  --text-dim:    #888f9d;
  --text-faint:  #555c69;

  /* —— 强调色:电光薄荷绿(主) + 珊瑚橙(点缀) —— */
  --accent:      #3df5b4;
  --accent-soft: rgba(61, 245, 180, 0.12);
  --accent-line: rgba(61, 245, 180, 0.30);
  --accent-glow: rgba(61, 245, 180, 0.45);
  --hot:         #ff6b4a;

  /* —— 字体 —— */
  --font-display: "Chakra Petch", "JetBrains Mono", sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, monospace;

  --radius: 10px;
  --maxw: 1180px;

  --bass: 0;  /* 0~1,音乐可视化每帧写入,驱动顶部辉光随低音呼吸 */
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-mono);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: #04130d; }

/* —— 滚动条 —— */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #20242c; border-radius: 6px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: #2c313b; }

/* ============================================================
 *  背景氛围层
 * ============================================================ */

/* 细网格 */
.bg-grid {
  position: fixed; inset: 0; z-index: -3; pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
  opacity: 0.6;
}

/* 顶部光晕 */
.bg-glow {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(700px 360px at 50% -8%, var(--accent-soft), transparent 70%),
    radial-gradient(500px 300px at 100% 0%, rgba(255, 107, 74, 0.06), transparent 70%);
}
/* 播放时:低频(--bass,由 JS 每帧写入)驱动辉光呼吸 */
html.viz-on .bg-glow {
  opacity: calc(0.62 + var(--bass, 0) * 0.4);
  transform: scale(calc(1 + var(--bass, 0) * 0.03));
  transition: opacity 0.12s linear;
  will-change: opacity, transform;
}

/* 频谱画布:垫在内容之下、背景纹理之上;轻微 drop-shadow 给柱子一点辉光,不刺眼 */
.viz {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  filter: drop-shadow(0 0 4px rgba(61, 245, 180, 0.22));
}

/* CRT 扫描线 */
.bg-scan {
  position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: 0.4;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 2px,
    rgba(255, 255, 255, 0.012) 3px,
    transparent 4px
  );
}

/* ============================================================
 *  布局外壳
 * ============================================================ */
.shell {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px 80px;
}

/* ============================================================
 *  顶栏
 * ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 24px;
  flex-wrap: wrap;
  padding: 22px 0 18px;
  margin-bottom: 26px;
  background: linear-gradient(to bottom, var(--bg) 60%, transparent);
  border-bottom: 1px solid var(--line);
}

/* 品牌 */
.brand { display: flex; align-items: center; gap: 6px; }
.brand-bracket {
  font-family: var(--font-display);
  font-size: 26px; font-weight: 600;
  color: var(--accent); opacity: 0.7;
}
.brand-mark {
  font-family: var(--font-display);
  font-size: 26px; font-weight: 700;
  letter-spacing: 3px;
  color: var(--text);
  text-shadow: 0 0 18px rgba(61, 245, 180, 0.25);
}
.brand-meta { display: flex; flex-direction: column; margin-left: 12px; }
.brand-owner { font-size: 12px; font-weight: 700; color: var(--text); letter-spacing: 0.5px; }
.brand-tagline { font-size: 11px; color: var(--text-dim); }

/* 搜索框 */
.search-wrap {
  flex: 1 1 320px;
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s, box-shadow 0.18s, background 0.18s;
}
.search-wrap:focus-within {
  border-color: var(--accent-line);
  box-shadow: 0 0 0 1px var(--accent-line), 0 0 24px -6px var(--accent-glow);
  background: var(--surface-2);
}
.search-prompt {
  color: var(--accent); font-weight: 700; font-size: 15px;
  animation: blink 1.3s steps(2, start) infinite;
}
.search-input {
  flex: 1; border: none; outline: none; background: transparent;
  color: var(--text); font-family: var(--font-mono); font-size: 14px;
}
.search-input::placeholder { color: var(--text-faint); }
.search-key {
  font-family: var(--font-mono); font-size: 11px; color: var(--text-dim);
  background: var(--bg); border: 1px solid var(--line-strong);
  border-radius: 5px; padding: 2px 7px; min-width: 22px; text-align: center;
}

/* 状态 */
.status { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--text-dim); }
.status-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
.status-label { letter-spacing: 1px; }
.clock { color: var(--text); font-variant-numeric: tabular-nums; letter-spacing: 1px; }

/* ============================================================
 *  分类 + 卡片网格
 * ============================================================ */
.grid { display: flex; flex-direction: column; gap: 36px; }

.cat {
  opacity: 0;
  animation: reveal 0.5s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
  animation-delay: calc(var(--i, 0) * 45ms);
}

.cat-head {
  display: flex; align-items: baseline; gap: 12px;
  margin-bottom: 14px;
}
.cat-index {
  font-family: var(--font-mono); font-size: 12px; font-weight: 700;
  color: var(--accent); opacity: 0.85;
}
.cat-name {
  font-family: var(--font-display); font-size: 16px; font-weight: 600;
  letter-spacing: 1px; color: var(--text); white-space: nowrap;
}
.cat-rule { flex: 1; height: 1px; background: linear-gradient(90deg, var(--line-strong), transparent); }
.cat-count { font-size: 11px; color: var(--text-faint); }

.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(232px, 1fr));
  gap: 12px;
}

/* 卡片 */
.card {
  position: relative;
  display: flex; align-items: center; gap: 13px;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none; color: inherit;
  overflow: hidden;
  transition: transform 0.16s ease, border-color 0.16s, box-shadow 0.16s, background 0.16s;
  opacity: 0;
  animation: reveal 0.45s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
  animation-delay: calc(var(--i, 0) * 28ms);
}
/* 左侧 hover 高亮条 */
.card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px;
  background: var(--accent); transform: scaleY(0); transform-origin: top;
  transition: transform 0.18s ease;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-line);
  background: var(--surface-2);
  box-shadow: 0 10px 30px -14px var(--accent-glow), 0 0 0 1px var(--accent-line);
}
.card:hover::before { transform: scaleY(1); }
.card:focus-visible {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

.card-icon {
  width: 30px; height: 30px; flex-shrink: 0;
  display: grid; place-items: center;
  background: var(--bg); border: 1px solid var(--line);
  border-radius: 7px; overflow: hidden;
}
.card-icon img { width: 18px; height: 18px; display: block; }
.card-icon .fallback {
  font-family: var(--font-display); font-weight: 700; font-size: 14px;
  color: var(--accent);
}

.card-body { min-width: 0; flex: 1; display: flex; flex-direction: column; gap: 2px; }
.card-name {
  font-size: 13.5px; font-weight: 500; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.card-desc {
  font-size: 11px; color: var(--text-dim);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.card-arrow {
  font-size: 13px; color: var(--text-faint); opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.16s, transform 0.16s, color 0.16s;
}
.card:hover .card-arrow { opacity: 1; transform: none; color: var(--accent); }

/* 搜索隐藏 */
.card.is-hidden, .cat.is-hidden { display: none; }

/* ============================================================
 *  搜索无结果
 * ============================================================ */
.empty {
  text-align: center; padding: 70px 20px; color: var(--text-dim);
}
.empty-glyph { font-size: 40px; color: var(--hot); margin-bottom: 14px; }
.empty-text { font-size: 15px; color: var(--text); margin-bottom: 8px; }
.empty-text span { color: var(--accent); }
.empty-hint { font-size: 12px; color: var(--text-faint); }
.empty-hint kbd {
  background: var(--surface); border: 1px solid var(--line-strong);
  border-radius: 5px; padding: 1px 7px; color: var(--text-dim);
}
.empty-hint span { color: var(--accent); }

/* ============================================================
 *  底部
 * ============================================================ */
.site-footer {
  display: flex; align-items: center; gap: 12px;
  margin-top: 48px; padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 12px; color: var(--text-faint);
}
.footer-sep { opacity: 0.5; }
.footer-spacer { flex: 1; }
.site-footer a { color: var(--text-dim); text-decoration: none; transition: color 0.16s; }
.site-footer a:hover { color: var(--hot); }

/* ============================================================
 *  动画
 * ============================================================ */
@keyframes reveal {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: none; }
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.4; transform: scale(0.8); }
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.25; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .cat, .card { opacity: 1; }
}

/* ============================================================
 *  背景音乐播放器(紧凑悬浮 · 可拖动)
 * ============================================================ */
.player {
  position: fixed; right: 20px; bottom: 20px; z-index: 40;
  display: flex; align-items: center;
  padding: 8px 14px;
  background: var(--surface);
  background: color-mix(in srgb, var(--surface) 84%, transparent);
  border: 1px solid var(--line);
  border-radius: 999px;
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  box-shadow: 0 10px 30px -18px #000;
  cursor: grab; user-select: none; -webkit-user-select: none; touch-action: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.player:hover { border-color: var(--accent-line); }
.player.dragging { cursor: grabbing; }

/* 暂停时轻微呼吸光,提示「点我可播放」(拖动中不闪)*/
.player[data-state="paused"]:not(.dragging) { animation: playerHint 2.6s ease-in-out infinite; }
@keyframes playerHint {
  0%, 100% { box-shadow: 0 10px 30px -18px #000, 0 0 0 0 rgba(61, 245, 180, 0); }
  50%      { box-shadow: 0 10px 30px -18px #000, 0 0 0 4px rgba(61, 245, 180, 0.10); }
}

/* 唱片机:替代均衡器 —— 旋转唱片 = 播放指示,唱臂悬停抬起 */
.turntable { position: relative; width: 32px; height: 32px; margin-right: 11px; flex-shrink: 0; }

/* 唱片:中心标签 + 同心纹路;播放时旋转,暂停时定格 */
.disc {
  position: absolute; inset: 0; border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, #06140e 0 2px, transparent 2.4px),                                  /* 主轴孔 */
    radial-gradient(circle at 50% 50%, var(--accent) 2.4px 33%, transparent 33.5%),                         /* 标签 */
    repeating-radial-gradient(circle at 50% 50%, rgba(255,255,255,0.05) 0 1px, rgba(0,0,0,0.55) 1px 2.4px), /* 纹路 */
    #0b0d11;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.06), 0 1px 5px rgba(0,0,0,0.5);
  animation: spin 3.2s linear infinite;
  animation-play-state: paused;        /* 默认停;播放时转 */
}
/* 旋转高光:对称的唱片需要一道扫光,转起来才看得出来 */
.disc::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  background: conic-gradient(from 0deg, rgba(255,255,255,0.18), transparent 30%, transparent 70%, rgba(255,255,255,0.12));
  mix-blend-mode: screen;
}
.player[data-state="playing"] .disc { animation-play-state: running; }
@keyframes spin { to { transform: rotate(360deg); } }

/* 唱臂:右上角支点的「钝角 L」—— 主臂(.tonearm)从支点斜伸向盘面,
   末端折段(.tonearm-head)以约 28° 钝角弯向盘心(开口朝唱片),折段末端是唱头。
   主臂半径随角度呈 U 形:角度太大反而摆回中心标签,故用较小角度把唱头落到右下外环中段。
   落针(--arm-down)= 唱头压在外环黑胶中段(避开中心标签);
   抬起(--arm-up) = 主臂摆向右侧、唱头甩出盘缘(离盘归位)。 */
.tonearm {
  --arm-down: 1deg;
  --arm-up: -16deg;
  position: absolute; top: -3px; right: 0px;
  width: 3px; height: 21px; border-radius: 3px;        /* 主臂 L1≈19(支点在 2px 处)*/
  background: linear-gradient(180deg, var(--text-dim), var(--text));
  transform-origin: 50% 2px;           /* 支点在顶端转轴处 */
  transition: transform 0.5s cubic-bezier(0.34, 1.4, 0.5, 1);
  z-index: 2;
}
.tonearm::before {  /* 转轴 */
  content: ""; position: absolute; top: -3px; left: 50%; transform: translateX(-50%);
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--surface-2); box-shadow: inset 0 0 0 1.5px var(--text-dim);
}
/* headshell:主臂末端的钝角折段,固定弯向盘心(开口朝唱片);末端 ::after 是唱头 */
.tonearm-head {
  position: absolute; top: 100%; left: 50%; margin-left: -1.5px;
  width: 3px; height: 9px; border-radius: 3px;         /* 折段 L2 */
  background: linear-gradient(180deg, var(--text), var(--text-dim));
  transform-origin: 50% 0;             /* 绕肘部(主臂末端)旋转 */
  transform: rotate(28deg);            /* 钝角:内角≈152°,开口朝唱片 */
}
.tonearm-head::after {   /* 唱头 */
  content: ""; position: absolute; top: 100%; left: 50%; transform: translate(-50%, -3px);
  width: 6px; height: 5px; border-radius: 1px; background: var(--accent);
}

/* 唱臂位置由「播放状态」驱动(手机无悬停也能凭它看出播放 / 暂停):
   播放 → 落针在外环    暂停 → 抬起归位 */
.player[data-state="playing"] .tonearm { transform: rotate(var(--arm-down)); }
.player[data-state="paused"]  .tonearm { transform: rotate(var(--arm-up)); }

/* 悬停反转 = 预览「点一下会发生的相反动作」。仅在真有指针悬停的设备(桌面鼠标)生效,
   触摸屏不启用,避免「黏滞 hover」把唱臂卡在反转态。 */
@media (hover: hover) {
  .player[data-state="playing"]:hover .tonearm { transform: rotate(var(--arm-up)); }   /* 播放中悬停 → 抬起(预览暂停)*/
  .player[data-state="paused"]:hover  .tonearm { transform: rotate(var(--arm-down)); } /* 暂停中悬停 → 落针(预览播放)*/
}

/* 歌名跑马灯:定宽窗口 + 两端淡出 + 无缝循环 */
.player-marquee {
  width: 132px; flex-shrink: 0; overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 14%, #000 86%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 14%, #000 86%, transparent);
}
.marquee-track {
  display: inline-flex; white-space: nowrap; will-change: transform;
  animation: marquee 13s linear infinite; /* 想反向(从右往左)加一行 animation-direction: reverse */
}
.marquee-item {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.4px;
  color: var(--text-dim); padding-right: 34px;
}
.player[data-state="playing"] .marquee-item { color: var(--accent); }
@keyframes marquee { from { transform: translateX(-50%); } to { transform: translateX(0); } }

/* 音量条:默认收起,悬停 >1s 或滚轮时平滑展开 */
.player-vol {
  -webkit-appearance: none; appearance: none;
  width: 0; margin-left: 0; opacity: 0; pointer-events: none;
  height: 3px; border-radius: 3px; background: var(--line-strong); cursor: pointer;
  transition: width 0.34s cubic-bezier(0.2, 0.7, 0.2, 1),
              margin-left 0.34s cubic-bezier(0.2, 0.7, 0.2, 1),
              opacity 0.24s ease;
}
.player.vol-open .player-vol { width: 70px; margin-left: 11px; opacity: 1; pointer-events: auto; }
.player-vol::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--accent); border: none; box-shadow: 0 0 8px var(--accent-glow);
}
.player-vol::-moz-range-thumb {
  width: 11px; height: 11px; border: none; border-radius: 50%; background: var(--accent);
}

/* 样式切换器:嵌在播放器左侧,与音量条同样的展开规则(.vol-open 时一起滑出)*/
.viz-switch {
  display: flex; align-items: center; gap: 2px;
  width: 0; margin-right: 0; opacity: 0; overflow: hidden; pointer-events: none;
  transition: width 0.34s cubic-bezier(0.2, 0.7, 0.2, 1),
              margin-right 0.34s cubic-bezier(0.2, 0.7, 0.2, 1),
              opacity 0.24s ease;
}
.player.vol-open .viz-switch { width: 96px; margin-right: 5px; opacity: 1; pointer-events: auto; }
.viz-btn {
  flex: 0 0 auto;
  display: grid; place-items: center; width: 22px; height: 22px; padding: 0;
  border: none; border-radius: 50%; background: transparent;
  color: var(--text-dim); cursor: pointer;
  transition: color 0.16s, background 0.16s, box-shadow 0.16s;
}
.viz-btn svg { width: 14px; height: 14px; display: block; }
.viz-btn:hover { color: var(--text); background: rgba(255, 255, 255, 0.06); }
.viz-btn.active {
  color: var(--accent); background: var(--accent-soft);
  box-shadow: inset 0 0 0 1px var(--accent-line);
}
.viz-btn:focus-visible { outline: none; box-shadow: 0 0 0 2px var(--accent-glow); }

/* ============================================================
 *  响应式
 * ============================================================ */
@media (max-width: 720px) {
  .shell { padding: 0 18px 60px; }
  .site-header { gap: 14px; padding: 16px 0 14px; }
  .brand-meta { display: none; }
  .search-wrap { order: 3; flex-basis: 100%; }
  .status { order: 2; margin-left: auto; }
  .cat-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
  .player { right: 14px; bottom: 14px; padding: 7px 12px; }
  .player-marquee { width: 108px; }
  .player.vol-open .player-vol { width: 54px; }
  .player.vol-open .viz-switch { width: 88px; }
  .viz-btn { width: 20px; height: 20px; }
  .viz-btn svg { width: 13px; height: 13px; }
}