/* ===========================================================
   LanCast · B 站直播风主题
   主色：粉 #FB7299 / 蓝 #00AEEC，浅色卡片 + 细边框 + 8px 圆角
   =========================================================== */
:root{
  color-scheme:light;
  --bg:#f6f7f8;
  --card:#ffffff;
  --line:#e3e5e7;
  --line-strong:#c9ccd0;
  --text:#18191c;
  --muted:#61666d;
  --muted-2:#9499a0;
  --pink:#fb7299;
  --pink-dark:#e35d84;
  --pink-soft:#fff0f4;
  --blue:#00aeec;
  --blue-dark:#00a1d6;
  --blue-soft:#eaf9ff;
  --green:#2fbf71;
  --shadow:0 2px 8px rgba(0,0,0,.05);
  --radius:8px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:64px}
html,body{margin:0}
body{
  background:var(--bg);color:var(--text);min-height:100vh;
  font:14px/1.6 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--blue-dark);text-decoration:none}
a:hover{color:var(--pink)}
img{max-width:100%}
.shell{max-width:1180px;margin:0 auto;padding:0 20px 64px}

/* ---------- 顶部导航 ---------- */
.top{
  position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:26px;
  height:56px;margin-bottom:18px;padding:0 4px;
  background:rgba(255,255,255,.94);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:18px;color:var(--text);flex-shrink:0}
.logo:hover{color:var(--text)}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;
  border-radius:7px;background:linear-gradient(135deg,var(--pink),#ff9db6);
  color:#fff;font-size:13px;font-weight:900;
}
.logo-sub{font-size:12px;font-weight:400;color:var(--muted-2);margin-left:2px}
nav{display:flex;gap:22px;align-items:center;font-size:14px;height:100%}
nav a{
  position:relative;color:var(--muted);height:100%;display:inline-flex;align-items:center;
  font-weight:500;transition:color .15s;
}
nav a:hover{color:var(--pink);text-decoration:none}
nav a.active{color:var(--text);font-weight:600}
nav a.active::after{
  content:"";position:absolute;left:50%;bottom:-1px;transform:translateX(-50%);
  width:22px;height:3px;border-radius:3px 3px 0 0;background:var(--pink);
}
.top-actions{margin-left:auto;display:flex;gap:10px;align-items:center}

/* ---------- 通用按钮 ---------- */
.mobile-only{display:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  border:1px solid var(--line-strong);background:#fff;color:var(--text);
  padding:8px 16px;border-radius:6px;font:inherit;font-weight:500;line-height:1.4;
  cursor:pointer;white-space:nowrap;transition:background .15s,border-color .15s,color .15s;
}
.btn:hover{background:#f4f5f6;border-color:#b6bac0;text-decoration:none;color:var(--text)}
.btn.primary{background:var(--pink);border-color:var(--pink);color:#fff}
.btn.primary:hover{background:#fc8bab;border-color:#fc8bab;color:#fff}
.btn.ghost{background:var(--blue-soft);border-color:#b9ecfb;color:var(--blue-dark)}
.btn.ghost:hover{background:#dff5fe;border-color:#8fe0f8}
.btn.warn{background:#fff;border-color:#ffc2d1;color:var(--pink-dark)}
.btn.warn:hover{background:var(--pink-soft)}
.btn:disabled{opacity:.45;cursor:not-allowed;background:#f4f5f6;border-color:var(--line);color:var(--muted-2)}
.btn.primary:disabled{background:#f7c7d6;border-color:#f7c7d6;color:#fff}
.btn.sm{padding:6px 12px;font-size:13px}
.buttons{display:flex;gap:10px;flex-wrap:wrap;align-items:center}

/* ---------- 首页 Banner ---------- */
.hero{
  position:relative;overflow:hidden;border-radius:12px;padding:44px 40px 38px;
  background:
    radial-gradient(820px 320px at 88% -30%,rgba(0,174,236,.18),transparent 70%),
    radial-gradient(760px 340px at 4% 120%,rgba(251,114,153,.22),transparent 72%),
    #fff;
  border:1px solid var(--line);margin-bottom:22px;
}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.12em;font-weight:600;color:var(--pink-dark);text-transform:uppercase}
h1{font-size:34px;line-height:1.28;margin:12px 0 14px;letter-spacing:-.01em;font-weight:700}
h2{font-size:18px;margin:0 0 14px;font-weight:600;display:flex;align-items:center;gap:8px}
h3{font-size:15px;margin:0 0 6px;font-weight:600}
p{line-height:1.75;color:var(--muted);margin:0 0 8px}
.sub{max-width:720px;font-size:15px;margin-bottom:26px}
.hero .buttons{margin-top:4px}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow);
}
.card + .card{margin-top:16px}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}
.card-head h2{margin:0}
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}
.tile{padding:20px}
.tile-icon{
  width:36px;height:36px;display:grid;place-items:center;border-radius:8px;
  background:var(--pink-soft);color:var(--pink);font-size:18px;margin-bottom:12px;
}
.tile:nth-child(2) .tile-icon{background:var(--blue-soft);color:var(--blue-dark)}
.tile:nth-child(3) .tile-icon{background:#f3f0ff;color:#7d6ad6}
.tile p{margin:0;font-size:13px}

/* ---------- 布局 ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:16px;align-items:start}
.stack{display:grid;gap:16px;min-width:0}
.side{display:grid;gap:16px;align-content:start}
.room-meta b{color:var(--text);font-variant-numeric:tabular-nums}

/* ---------- 播放器 ---------- */
.video-panel{
  position:relative;aspect-ratio:16/9;background:#0b0b0c;border-radius:8px;overflow:hidden;
  border:1px solid #1e1e20;
}
.stage-video{display:block;width:100%;height:100%;object-fit:contain;background:#0b0b0c}
.empty-state{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:8px;color:#8b8f96;pointer-events:none;text-align:center;padding:24px;
}
.empty-state strong{font-size:16px;color:#e6e8ea;font-weight:600}
.empty-state span{font-size:13px}
.empty-state .symbol{font-size:38px;opacity:.65;color:var(--pink)}
.hidden{display:none!important}

.tag{
  display:inline-flex;align-items:center;gap:5px;padding:3px 9px;font-size:12px;
  border-radius:4px;background:#f1f2f3;color:var(--muted);border:1px solid var(--line);
  white-space:nowrap;
}
.tag.live{background:var(--pink-soft);color:var(--pink-dark);border-color:#ffd0dc}
.tag.live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--pink);animation:pulse 1.4s infinite}
@keyframes pulse{50%{opacity:.35}}

.statusbar{display:flex;gap:14px;flex-wrap:wrap;margin-top:10px;align-items:center;color:var(--muted-2);font-size:12px}
.controls{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px;align-items:center}
.controls .btn{font-size:13px;padding:7px 12px}
.controls label{margin:0;display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted)}

/* ---------- 表单 ---------- */
label{display:block;font-size:13px;font-weight:500;color:var(--muted);margin:14px 0 6px}
input,select{
  width:100%;padding:9px 11px;font:inherit;color:var(--text);
  background:#fff;border:1px solid var(--line-strong);border-radius:6px;outline:none;
  transition:border-color .15s,box-shadow .15s;
}
input:focus,select:focus{border-color:var(--pink);box-shadow:0 0 0 3px rgba(251,114,153,.14)}
input::placeholder{color:#b0b4bb}
input[readonly]{background:#f6f7f8;color:var(--muted)}
.field-row{display:flex;gap:8px}
.field-row input{flex:1;min-width:0}
.help{font-size:12px;color:var(--muted-2);margin:6px 0 0;line-height:1.65}

/* ---------- 提示条 ---------- */
.notice{
  margin-top:12px;padding:10px 12px;border-radius:6px;font-size:13px;line-height:1.65;
  background:#f6f7f8;border:1px solid var(--line);color:var(--muted);overflow-wrap:anywhere;
}
.notice.good{background:#f1fbf6;border-color:#c8ecd9;color:#1f8a55}
.notice.error{background:#fff3f5;border-color:#ffcdd8;color:#d24b6c}

/* ---------- 数据展示 ---------- */
.monitor{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.monitor>div{background:#f6f7f8;border-radius:6px;padding:12px}
.monitor small{color:var(--muted-2);font-size:12px}
.monitor b{display:block;margin-top:4px;font-size:22px;font-weight:700;font-variant-numeric:tabular-nums}
.step{display:flex;gap:10px;margin-top:12px;align-items:flex-start}
.step-num{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;
  background:var(--pink-soft);color:var(--pink-dark);font-size:12px;font-weight:700;
}
.step p{margin:0;font-size:13px;color:var(--muted)}
code{background:#f1f2f3;border-radius:4px;padding:1px 5px;font-size:12px;color:#d24b6c;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.foot{margin-top:36px;padding-top:18px;border-top:1px solid var(--line);font-size:12px;color:var(--muted-2);line-height:1.8}
.tip{color:var(--muted-2);font-size:12px}

/* ---------- 房间信息 / 主播条 ---------- */
.room-bar{display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.room-bar h2{font-size:17px;margin:0}
.room-meta{color:var(--muted-2);font-size:12px;display:flex;gap:10px;flex-wrap:wrap}
.divider{height:1px;background:var(--line);margin:14px 0}

/* ---------- 移动端 ---------- */
@media(max-width:980px){
  .layout{grid-template-columns:minmax(0,1fr)}
  .side{position:static}
  .tiles{grid-template-columns:1fr}
}
@media(max-width:720px){
  .mobile-only{display:inline-flex}
  .shell{padding:0 12px 42px}
  .top{gap:10px;height:50px}
  .logo{font-size:16px}
  .logo-sub{display:none}
  #headerBadge{display:none}
  nav{gap:12px;font-size:13px}
  .top-actions{gap:6px}
  .top-actions .btn{padding:6px 10px;font-size:13px}
  .hero{padding:26px 18px 24px;border-radius:10px}
  h1{font-size:24px}
  h2{font-size:16px}
  .card{padding:14px}
  .sub{font-size:14px}
  /* 视频在手机上通栏沉浸 */
  .video-panel{border-radius:6px;margin-left:-14px;margin-right:-14px;width:calc(100% + 28px);border-radius:0}
  .empty-state strong{font-size:14px}
  .empty-state span{font-size:12px}
  .controls .btn{flex:1 1 auto}
  .monitor b{font-size:18px}
  input,select{font-size:16px} /* 防止 iOS 聚焦时页面放大 */
}
@media(max-width:420px){
  nav{gap:9px;font-size:12px}
  .top-actions .btn{padding:5px 8px;font-size:12px}
}

/* ---------- 账号 / 登录 ---------- */
.auth-wrap{display:flex;justify-content:center;padding:26px 0 0}
.auth-card{width:100%;max-width:420px;padding:26px 24px}
.auth-title{font-size:20px;margin:0 0 6px}
.auth-lead{margin:0 0 18px}
.auth-tabs{display:flex;gap:4px;background:#f1f2f3;border-radius:8px;padding:4px;margin-bottom:18px}
.auth-tab{
  flex:1;border:0;background:transparent;border-radius:6px;padding:8px 0;cursor:pointer;
  font:inherit;font-size:13px;color:var(--muted);transition:background .15s,color .15s;
}
.auth-tab:hover{color:var(--text)}
.auth-tab.active{background:#fff;color:var(--text);font-weight:600;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.auth-form{display:grid;gap:6px}
.auth-form label{margin-top:6px}
.auth-form .btn.block{width:100%;justify-content:center;margin-top:16px;padding:10px 0}
.auth-form .notice{margin-top:10px}
.auth-foot{margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}
.account-row{display:flex;align-items:center;justify-content:space-between;gap:10px;background:#f6f7f8;border-radius:6px;padding:10px 12px;margin-bottom:14px}
.account-row small{display:block;color:var(--muted-2);font-size:12px}
.account-row b{font-size:14px}
.room-list{display:grid;gap:8px}
.room-item{
  display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;
  background:#fff;border:1px solid var(--line);border-radius:6px;padding:9px 12px;
  cursor:pointer;font:inherit;text-align:left;transition:border-color .15s,background .15s;
}
.room-item:hover{border-color:var(--pink);background:var(--pink-soft)}
.room-item-name{font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.room-item-meta{font-size:12px;color:var(--muted-2);flex-shrink:0}
.live-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.live-card{display:block;background:#fff;border:1px solid var(--line);border-radius:8px;padding:14px;color:var(--text)}
.live-card:hover{border-color:var(--pink);color:var(--text)}
.live-card h3{margin:0 0 4px;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.live-card p{margin:0;font-size:12px;color:var(--muted-2)}
@media(max-width:420px){
  .auth-card{padding:20px 16px}
  .auth-form .btn.block{padding:11px 0}
}