/* ==========================================================================
   STORY://RADIO · 儿童睡前故事电台
   极客暗黑 / 终端风 / 硬核冷峻技术感
   ========================================================================== */

:root{
  --c-primary:#55c6dd;
  --c-accent:#cd5d47;
  --c-cta:#5ba3ec;
  --c-bg:#0e1415;
  --c-surface:#1a2223;
  --c-text:#eef1f2;
  --c-muted:#98abae;
  --c-line:#303d40;
  --r:4px;
  --mono:'JetBrains Mono','Fira Code',ui-monospace,'SFMono-Regular','Courier New',monospace;
  --sans:system-ui,-apple-system,'PingFang SC','Microsoft YaHei','Segoe UI',sans-serif;
  --pad:clamp(14px,2.4vw,26px);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  min-height:100vh;
  background-color:var(--c-bg);
  background-image:
    linear-gradient(rgba(48,61,64,.18) 1px,transparent 1px),
    linear-gradient(90deg,rgba(48,61,64,.18) 1px,transparent 1px),
    radial-gradient(1100px 520px at 50% -8%,rgba(85,198,221,.07),transparent 62%);
  background-size:34px 34px,34px 34px,auto;
  color:var(--c-text);
  font-family:var(--sans);
  line-height:1.65;
  transition:background-color .4s;
}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
img{max-width:100%;display:block}
::selection{background:var(--c-primary);color:var(--c-bg)}

::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--c-bg)}
::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:var(--r)}
::-webkit-scrollbar-thumb:hover{background:var(--c-primary)}

:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}

.wrap{max-width:1160px;margin:0 auto;padding:0 var(--pad)}

.mono{font-family:var(--mono)}
.muted{color:var(--c-muted)}
.primary{color:var(--c-primary)}
.accent{color:var(--c-accent)}
.cta{color:var(--c-cta)}

/* ---------- 头部 / 导航 ---------- */
.site-head{
  position:sticky;top:0;z-index:30;
  background:rgba(14,20,21,.84);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;padding:14px 0}
.logo{display:inline-flex;align-items:baseline;gap:10px}
.logo-mark{font-family:var(--mono);font-weight:800;color:var(--c-primary);font-size:1.05rem}
.logo-text{font-family:var(--mono);font-weight:800;letter-spacing:.14em;color:var(--c-text);font-size:.98rem}
.logo-sub{font-size:.76rem;color:var(--c-muted);letter-spacing:.04em}

.nav{display:flex;gap:6px;flex-wrap:wrap}
.nav-link{font-family:var(--mono);font-size:.84rem;letter-spacing:.05em;color:var(--c-muted);padding:7px 11px;border:1px solid transparent;border-radius:var(--r);transition:.16s}
.nav-link:hover{color:var(--c-text);border-color:var(--c-line)}
.nav-link.active{color:var(--c-primary);border-color:var(--c-primary)}

/* ---------- 系统状态行 ---------- */
.sysline{border-bottom:1px solid var(--c-line);font-family:var(--mono);font-size:.74rem;letter-spacing:.06em;color:var(--c-muted);padding:7px 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sysline b{color:var(--c-primary);font-weight:700}

/* ---------- Hero ---------- */
.hero{padding:46px 0 24px;border-bottom:1px solid var(--c-line)}
.hero-tag{font-family:var(--mono);color:var(--c-muted);font-size:.8rem;letter-spacing:.1em;margin-bottom:14px}
.hero h1{font-family:var(--mono);font-weight:800;font-size:clamp(1.7rem,5.4vw,3rem);letter-spacing:.05em;line-height:1.15;color:var(--c-text)}
.hero-desc{max-width:640px;color:var(--c-muted);margin-top:14px;font-size:.96rem}
.hero-stats{display:flex;gap:26px;margin-top:22px;font-family:var(--mono);font-size:.8rem;color:var(--c-muted);flex-wrap:wrap}
.hero-stats b{color:var(--c-primary);font-weight:700;margin-left:6px}

.cursor{display:inline-block;color:var(--c-primary);animation:blink 1.1s steps(1) infinite}
@keyframes blink{0%,49%{opacity:1}50%,100%{opacity:0}}

/* ---------- 工具栏 / 标签 / 搜索 ---------- */
.toolbar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:24px 0 4px}
.tabs{display:flex;gap:8px;flex-wrap:wrap}
.tab{font-family:var(--mono);font-size:.8rem;letter-spacing:.04em;color:var(--c-muted);background:transparent;border:1px solid var(--c-line);padding:8px 13px;border-radius:var(--r);transition:.16s}
.tab:hover{color:var(--c-text);border-color:var(--c-muted)}
.tab.active{background:var(--c-primary);color:var(--c-bg);border-color:var(--c-primary);font-weight:700}

.search{flex:1;min-width:220px;background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-text);font-family:var(--mono);font-size:.86rem;padding:10px 13px;border-radius:var(--r);transition:border-color .16s}
.search::placeholder{color:var(--c-muted)}
.search:focus{border-color:var(--c-primary);outline:none}

/* ---------- 故事卡片 ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(272px,1fr));gap:16px;padding:22px 0 8px}
.card{
  position:relative;display:flex;flex-direction:column;gap:12px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r);
  padding:18px;transition:border-color .18s,transform .18s,box-shadow .18s;
}
.card::before,.card::after{content:"";position:absolute;width:9px;height:9px;border:1px solid var(--c-primary);transition:opacity .2s;opacity:0}
.card::before{top:-1px;left:-1px;border-right:0;border-bottom:0}
.card::after{bottom:-1px;right:-1px;border-left:0;border-top:0}
.card:hover{border-color:var(--c-primary);transform:translateY(-3px);box-shadow:0 14px 32px rgba(0,0,0,.38)}
.card:hover::before,.card:hover::after{opacity:1}

.card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.card-title{flex:1;font-family:var(--mono);font-weight:700;font-size:1.02rem;letter-spacing:.02em;color:var(--c-text);transition:color .16s}
.card-title:hover{color:var(--c-primary)}
.card-desc{color:var(--c-muted);font-size:.86rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.badges{display:flex;flex-wrap:wrap;gap:6px}
.badge{display:inline-block;font-family:var(--mono);font-size:.7rem;letter-spacing:.05em;color:var(--c-muted);border:1px solid var(--c-line);padding:2px 7px;border-radius:var(--r);white-space:nowrap}
.badge--cat{color:var(--c-cta);border-color:rgba(91,163,236,.45)}
.badge--age{color:var(--c-primary);border-color:rgba(85,198,221,.45)}
.badge--mood{color:var(--c-accent);border-color:rgba(205,93,71,.45)}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:12px;border-top:1px dashed var(--c-line)}
.card-play{color:var(--c-primary);font-size:.76rem;letter-spacing:.05em}
.card-id{color:var(--c-muted);font-size:.7rem}

.fav{background:transparent;border:1px solid var(--c-line);color:var(--c-muted);width:34px;height:34px;font-size:1rem;line-height:1;border-radius:var(--r);transition:.16s;flex:none}
.fav:hover{border-color:var(--c-accent);color:var(--c-accent)}
.fav.on{color:var(--c-accent);border-color:var(--c-accent);background:rgba(205,93,71,.1)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;background:transparent;border:1px solid var(--c-line);color:var(--c-muted);font-family:var(--mono);font-size:.78rem;letter-spacing:.06em;padding:9px 14px;border-radius:var(--r);transition:.16s}
.btn:hover{color:var(--c-primary);border-color:var(--c-primary)}
.btn--primary{background:var(--c-primary);border-color:var(--c-primary);color:var(--c-bg);font-weight:700}
.btn--primary:hover{background:var(--c-bg);color:var(--c-primary)}
.btn--block{width:100%}
.big-btn{width:72px;height:72px;display:flex;align-items:center;justify-content:center;background:var(--c-primary);border:none;color:var(--c-bg);border-radius:var(--r);font-size:1.55rem;line-height:1;transition:.16s}
.big-btn:hover{background:var(--c-bg);color:var(--c-primary);box-shadow:inset 0 0 0 2px var(--c-primary)}

/* ---------- 面板 ---------- */
.panel{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r);padding:20px}
.panel h2{font-family:var(--mono);font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;color:var(--c-muted);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.panel h2::before{content:"#";color:var(--c-primary)}

/* ---------- 播放页 ---------- */
.crumb{margin:20px 0 0;font-size:.8rem;display:flex;gap:8px;align-items:center}
.crumb a:hover{color:var(--c-primary)}
.player{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:22px;align-items:start;padding:22px 0 8px}

.np-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px}
.wave{display:flex;align-items:flex-end;gap:3px;height:26px}
.wave span{width:4px;height:6px;background:var(--c-primary);border-radius:2px;animation:wave 1.1s ease-in-out infinite}
.wave span:nth-child(2){animation-delay:.12s}
.wave span:nth-child(3){animation-delay:.26s}
.wave span:nth-child(4){animation-delay:.4s}
.wave span:nth-child(5){animation-delay:.18s}
.wave.paused span{animation-play-state:paused;height:6px}
@keyframes wave{0%,100%{height:6px}50%{height:22px}}

.np-title{font-family:var(--mono);font-weight:800;font-size:clamp(1.4rem,3.4vw,2rem);letter-spacing:.04em;line-height:1.2}
.np-badges{margin:12px 0 14px;gap:6px}
.np-desc{color:var(--c-muted);font-size:.92rem;max-width:640px}

.prog{position:relative;height:26px;cursor:pointer;user-select:none;margin-top:6px}
.prog-track{position:absolute;left:0;right:0;bottom:9px;height:4px;background:var(--c-line);border-radius:var(--r);transition:height .15s}
.prog-fill{position:absolute;left:0;bottom:9px;height:4px;width:0;background:var(--c-primary);border-radius:var(--r);transition:height .15s}
.prog-thumb{position:absolute;bottom:5px;left:0;width:14px;height:14px;background:var(--c-bg);border:2px solid var(--c-primary);border-radius:2px;transform:translateX(-50%)}
.prog:hover .prog-track{height:7px}
.prog:hover .prog-fill{height:7px}
.prog-time{display:flex;justify-content:space-between;font-size:.78rem;color:var(--c-muted);margin-top:2px}

.transport{display:flex;align-items:center;justify-content:center;gap:16px;margin:16px 0 20px;flex-wrap:wrap}

.mixers{display:grid;grid-template-columns:1fr 1fr;gap:16px;border-top:1px dashed var(--c-line);padding-top:16px}
.mixer{display:flex;align-items:center;gap:12px;min-width:0}
.mixer-label{flex:none;width:56px;color:var(--c-muted);font-size:.7rem;letter-spacing:.08em}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:4px;background:var(--c-line);border-radius:var(--r);accent-color:var(--c-primary)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;background:var(--c-bg);border:2px solid var(--c-primary);border-radius:2px;cursor:pointer}
input[type=range]::-moz-range-thumb{width:12px;height:12px;background:var(--c-bg);border:2px solid var(--c-primary);border-radius:2px;cursor:pointer}

/* 定时关闭 */
.timer-opts{display:flex;gap:8px;flex-wrap:wrap}
.timer-opt{font-family:var(--mono);font-size:.82rem;letter-spacing:.04em;color:var(--c-muted);background:transparent;border:1px solid var(--c-line);padding:8px 12px;border-radius:var(--r);transition:.16s;min-width:52px}
.timer-opt:hover{color:var(--c-text);border-color:var(--c-muted)}
.timer-opt.active{background:var(--c-accent);border-color:var(--c-accent);color:var(--c-bg);font-weight:700}
.timer-readout{display:flex;align-items:baseline;gap:12px;margin:16px 0 4px}
.timer-count{font-family:var(--mono);font-size:1.9rem;font-weight:700;color:var(--c-accent)}
.timer-label{font-size:.72rem;letter-spacing:.08em}
.hint{font-size:.76rem;color:var(--c-muted);margin-top:8px}

/* 相关列表 */
.related{display:flex;flex-direction:column;gap:8px}
.related-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid var(--c-line);border-radius:var(--r);background:var(--c-surface);cursor:pointer;transition:.16s;width:100%;text-align:left}
.related-item:hover{border-color:var(--c-primary)}
.related-item.on{border-color:var(--c-primary);background:rgba(85,198,221,.07)}
.ri-num{font-family:var(--mono);color:var(--c-muted);font-size:.74rem}
.ri-title{font-family:var(--mono);font-size:.86rem;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ri-dur{margin-left:auto;color:var(--c-muted);font-family:var(--mono);font-size:.72rem;flex:none}

/* 空状态 */
.empty{text-align:center;padding:64px 20px;border:1px dashed var(--c-line);border-radius:var(--r);color:var(--c-muted);font-family:var(--mono);margin:22px 0}
.empty p+p{margin-top:10px}

/* 夜间休眠浮层 / 提示 */
.sleep-notice{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);z-index:60;display:flex;align-items:center;gap:16px;background:var(--c-surface);border:1px solid var(--c-primary);border-radius:var(--r);padding:14px 18px;box-shadow:0 16px 44px rgba(0,0,0,.55);max-width:calc(100vw - 32px)}
.sn-icon{color:var(--c-primary);font-size:1.3rem;flex:none}
.sleep-notice p{font-size:.84rem}

.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(18px);opacity:0;transition:.28s;z-index:70;background:var(--c-surface);border:1px solid var(--c-primary);color:var(--c-text);font-family:var(--mono);font-size:.8rem;padding:10px 16px;border-radius:var(--r);pointer-events:none;white-space:nowrap;max-width:calc(100vw - 32px);overflow:hidden;text-overflow:ellipsis}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* 夜间模式：整体压暗 + 暖色微光 */
body.night{background-color:#0a0f10}
body.night::after{content:"";position:fixed;inset:0;z-index:40;pointer-events:none;background:radial-gradient(120% 100% at 50% 8%,rgba(10,14,14,.06),rgba(4,7,8,.82) 92%);mix-blend-mode:multiply}
body.night .site-head{background:rgba(8,12,13,.92)}
body.night .card:hover{box-shadow:none}

/* 页脚 */
.site-foot{margin-top:70px;border-top:1px solid var(--c-line);padding:24px 0 36px;font-family:var(--mono);font-size:.74rem;color:var(--c-muted);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* ---------- 响应式 ---------- */
@media (max-width:900px){
  .player{grid-template-columns:1fr}
}
@media (max-width:640px){
  .head-inner{justify-content:center}
  .transport{gap:12px}
  .big-btn{width:60px;height:60px}
  .hero{padding:32px 0 20px}
  .hero-stats{gap:14px}
  .mixers{grid-template-columns:1fr}
  .site-foot{flex-direction:column}
}

/* ---------- 补充：夜间开关 / 播放脉冲 / 调光浮层 / 交互细节 ---------- */
.nav-link.night-btn{min-width:38px;text-align:center;padding:7px 10px}
.nav-link.night-btn.on{color:var(--c-accent);border-color:var(--c-accent);background:rgba(205,93,71,.08)}
.card{cursor:pointer}
.card .fav{cursor:pointer}
.card:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.veil{position:fixed;inset:0;z-index:45;pointer-events:none;background:#030506;opacity:0;transition:opacity .35s}
.player .side h2 + h2{margin-top:24px}
.big-btn.playing{animation:pulse 2.2s ease-out infinite}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(85,198,221,.45)}
  70%{box-shadow:0 0 0 14px rgba(85,198,221,0)}
  100%{box-shadow:0 0 0 0 rgba(85,198,221,0)}
}
@media (max-width:640px){
  .nav-link.night-btn{min-width:34px}
  .card-title{font-size:.96rem}
}

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