/* ==========================================================================
   直播视频系统 · 样式表
   深色直播间风格 / 自适应 PC、平板、手机、小窗口
   ========================================================================== */

:root{
  --bg:#0a0d12;
  --bg-soft:#111722;
  --panel:#141b26;
  --panel-2:#1a2331;
  --line:#232d3d;
  --text:#e9eef6;
  --text-dim:#8b98ab;
  --text-mute:#5f6d80;
  --live:#ff2f52;
  --live-2:#ff6a4d;
  --accent:#3b82f6;
  --ok:#22c55e;
  --warn:#f59e0b;
  --radius:14px;
  --topbar-h:52px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;height:100%}
html{-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:15px;
  line-height:1.5;
  overscroll-behavior:none;
}
h1,h2,h3,p{margin:0}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit}
svg{width:100%;height:100%;fill:currentColor;display:block}
[hidden]{display:none !important}

/* ---------- 框架 ---------- */
#app{display:flex;flex-direction:column;height:100vh;height:100dvh;overflow:hidden}

.topbar{
  height:var(--topbar-h);
  flex:0 0 var(--topbar-h);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 14px;
  background:linear-gradient(180deg,#121a26,#0d131c);
  border-bottom:1px solid var(--line);
  z-index:20;
}
.brand{display:flex;align-items:center;gap:9px;min-width:0}
.logo{
  width:22px;height:22px;border-radius:7px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--live),var(--live-2));
  box-shadow:0 0 14px rgba(255,47,82,.5);
  position:relative;
}
.logo::after{
  content:"";position:absolute;inset:0;margin:auto;width:8px;height:8px;
  background:#fff;border-radius:2px;
  clip-path:polygon(0 0,100% 50%,0 100%);
}
.logo.big{width:46px;height:46px;border-radius:14px}
.logo.big::after{width:16px;height:16px}
.brand h1{
  font-size:16px;font-weight:600;letter-spacing:.2px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.topbar-right{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.me{font-size:12.5px;color:var(--text-dim);max-width:34vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mini-btn{
  font-size:12.5px;color:var(--text-dim);padding:5px 11px;border-radius:8px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);transition:.15s
}
.mini-btn:hover{color:var(--text);background:rgba(255,255,255,.1)}

main{flex:1 1 auto;display:flex;min-height:0;overflow:hidden}

/* ---------- 播放区 ---------- */
.stage{
  position:relative;flex:1 1 auto;min-width:0;min-height:0;
  background:#000;display:flex;align-items:center;justify-content:center;
  overflow:hidden;
}
#video{
  width:100%;height:100%;object-fit:contain;background:#000;
  outline:none;border:0;
  pointer-events:none;         /* 禁止点击画面暂停/全屏 */
  -webkit-user-select:none;user-select:none;
}
#video::-webkit-media-controls,
#video::-webkit-media-controls-enclosure,
#video::-webkit-media-controls-panel,
#video::-webkit-media-controls-play-button,
#video::-webkit-media-controls-timeline,
#video::-webkit-media-controls-current-time-display,
#video::-webkit-media-controls-time-remaining-display,
#video::-webkit-media-controls-seek-back-button,
#video::-webkit-media-controls-seek-forward-button,
#video::-webkit-media-controls-volume-slider,
#video::-webkit-media-controls-mute-button,
#video::-webkit-media-controls-fullscreen-button,
#video::-webkit-media-controls-overlay-play-button{display:none !important;-webkit-appearance:none}

/* 左上角「直播」 */
.badge-live{
  position:absolute;top:12px;left:12px;z-index:6;
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px 5px 9px;border-radius:9px;
  background:linear-gradient(135deg,var(--live),var(--live-2));
  color:#fff;font-size:13px;font-weight:700;letter-spacing:2px;
  box-shadow:0 4px 16px rgba(255,47,82,.45);
  pointer-events:none;
}
.badge-live .dot{
  width:7px;height:7px;border-radius:50%;background:#fff;
  animation:pulse 1.4s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.75)}}
.badge-live.off{background:linear-gradient(135deg,#4b5563,#374151);box-shadow:none}
.badge-live.off .dot{animation:none}

/* 左下角 在线人数 */
.badge-online{
  position:absolute;left:12px;bottom:12px;z-index:6;
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;border-radius:9px;
  background:rgba(10,14,20,.62);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.1);
  font-size:12.5px;color:#dfe7f2;pointer-events:none;
  white-space:nowrap;
}
.badge-online svg{width:14px;height:14px;color:#6fb2ff;flex:0 0 auto}
.badge-online b{color:#fff;font-weight:700;font-variant-numeric:tabular-nums}

/* 右上角工具 */
.badge-tools{position:absolute;top:10px;right:12px;z-index:6;display:flex;gap:7px}
.ico-btn{
  width:34px;height:34px;padding:8px;border-radius:9px;
  background:rgba(10,14,20,.55);border:1px solid rgba(255,255,255,.1);
  color:#dfe7f2;transition:.15s;
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.ico-btn:hover{background:rgba(30,40,55,.8)}
.ico-btn.muted{color:var(--live)}

/* 状态遮罩 */
.veil{
  position:absolute;inset:0;z-index:8;
  display:flex;align-items:center;justify-content:center;
  background:radial-gradient(120% 90% at 50% 40%,rgba(18,26,38,.86),rgba(6,9,13,.96));
  backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px);
  text-align:center;padding:20px;
}
.veil[hidden]{display:none}
.veil-box{max-width:440px;width:100%}
.veil-title{font-size:19px;font-weight:700;margin-bottom:8px}
.veil-desc{color:var(--text-dim);font-size:13.5px;line-height:1.7}
.veil-big{
  font-size:clamp(28px,7vw,46px);font-weight:800;letter-spacing:1px;
  font-variant-numeric:tabular-nums;margin:6px 0 10px;
  background:linear-gradient(135deg,#fff,#8fbcff);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.veil-cd{display:flex;gap:10px;justify-content:center;margin:14px 0 6px}
.veil-cd div{
  min-width:66px;padding:9px 6px;border-radius:12px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.09);
}
.veil-cd b{display:block;font-size:24px;font-weight:800;font-variant-numeric:tabular-nums}
.veil-cd span{font-size:11px;color:var(--text-mute)}
.enter-btn{
  margin-top:20px;display:inline-flex;align-items:center;gap:9px;
  padding:13px 30px;border-radius:32px;font-size:16px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--live),var(--live-2));
  box-shadow:0 8px 26px rgba(255,47,82,.42);
  transition:transform .15s,box-shadow .15s;
}
.enter-btn:hover{transform:translateY(-1px);box-shadow:0 12px 32px rgba(255,47,82,.55)}
.enter-btn:active{transform:scale(.97)}
.enter-btn.ghost{
  background:rgba(255,255,255,.08);box-shadow:none;border:1px solid var(--line);
  color:var(--text);font-weight:600;padding:10px 22px;font-size:14px;
}

/* 缓冲 */
.buffering{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  z-index:7;display:none;align-items:center;gap:9px;
  padding:9px 16px;border-radius:24px;font-size:13px;color:#dbe4f0;
  background:rgba(10,14,20,.72);border:1px solid rgba(255,255,255,.1);
  backdrop-filter:blur(8px);
}
.buffering.show{display:flex}
.spinner{
  width:14px;height:14px;border-radius:50%;
  border:2px solid rgba(255,255,255,.22);border-top-color:#fff;
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* 公告 */
.notice{
  position:absolute;top:12px;left:50%;transform:translateX(-50%);
  z-index:6;max-width:min(560px,72%);
  padding:7px 15px;border-radius:9px;font-size:12.5px;color:#ffe6b0;
  background:rgba(120,80,0,.45);border:1px solid rgba(245,158,11,.35);
  backdrop-filter:blur(8px);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}

/* ---------- 评论区 ---------- */
.chat{
  flex:0 0 340px;width:340px;min-width:280px;
  display:flex;flex-direction:column;min-height:0;
  background:var(--panel);border-left:1px solid var(--line);
}
.chat-head{
  flex:0 0 auto;height:44px;display:flex;align-items:center;justify-content:space-between;
  padding:0 14px;border-bottom:1px solid var(--line);
  font-size:13.5px;font-weight:600;color:#cbd5e3;
}
.chat-count{
  font-size:11.5px;font-weight:600;color:var(--text-dim);
  background:rgba(255,255,255,.06);padding:2px 8px;border-radius:20px;
}
.chat-list{
  flex:1 1 auto;min-height:0;overflow-y:auto;overscroll-behavior:contain;
  padding:10px 12px;display:flex;flex-direction:column;gap:9px;
  scrollbar-width:thin;scrollbar-color:#2b3647 transparent;
}
.chat-list::-webkit-scrollbar{width:6px}
.chat-list::-webkit-scrollbar-thumb{background:#2b3647;border-radius:3px}
.chat-empty{color:var(--text-mute);font-size:12.5px;text-align:center;padding:26px 0}

.msg{display:flex;gap:8px;align-items:flex-start;animation:fadeIn .22s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.msg .av{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,#3b82f6,#8b5cf6);
  user-select:none;
}
.msg .body{min-width:0;flex:1 1 auto}
.msg .meta{display:flex;align-items:baseline;gap:7px;margin-bottom:2px}
.msg .nick{font-size:12.5px;font-weight:600;color:#9dc0f0;max-width:52%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.msg .time{font-size:11px;color:var(--text-mute);font-variant-numeric:tabular-nums}
.msg .text{
  font-size:13.5px;line-height:1.55;color:#e2e8f2;
  word-break:break-word;white-space:pre-wrap;
}
.msg.mine .nick{color:#ffd48a}
.msg.sys .text{color:var(--text-dim);font-size:12.5px;font-style:italic}

.chat-form{
  flex:0 0 auto;display:flex;gap:8px;padding:10px 12px 12px;
  border-top:1px solid var(--line);background:var(--panel-2);
  padding-bottom:calc(12px + env(safe-area-inset-bottom,0px));
}
.chat-form input{
  flex:1 1 auto;min-width:0;height:40px;padding:0 13px;border-radius:10px;
  background:var(--bg-soft);border:1px solid var(--line);color:var(--text);
  font-size:14px;outline:none;transition:.15s;
}
.chat-form input::placeholder{color:var(--text-mute)}
.chat-form input:focus{border-color:#3b6fd4;background:#0f1620}
.chat-form button{
  flex:0 0 auto;height:40px;padding:0 18px;border-radius:10px;
  background:linear-gradient(135deg,#2f6fe4,#4d8dff);color:#fff;
  font-size:14px;font-weight:600;transition:.15s;
}
.chat-form button:hover{filter:brightness(1.1)}
.chat-form button:disabled{opacity:.5;cursor:not-allowed;filter:none}

/* ---------- 弹窗 ---------- */
.modal{
  position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;
  padding:20px;background:rgba(5,8,12,.82);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.modal[hidden]{display:none}
.modal-card{
  width:100%;max-width:400px;padding:30px 26px 22px;border-radius:20px;
  background:linear-gradient(180deg,#182130,#111823);
  border:1px solid var(--line);box-shadow:var(--shadow);
  text-align:center;animation:popIn .25s cubic-bezier(.2,.9,.3,1.2);
}
@keyframes popIn{from{opacity:0;transform:scale(.94) translateY(12px)}to{opacity:1;transform:none}}
.modal-logo{display:flex;justify-content:center;margin-bottom:14px}
.modal-card h2{font-size:19px;font-weight:700;margin-bottom:6px}
.modal-sub{font-size:13px;color:var(--text-dim);margin-bottom:22px}
.field{display:block;text-align:left;margin-bottom:14px}
.field span{display:block;font-size:12.5px;color:var(--text-dim);margin-bottom:6px}
.field input{
  width:100%;height:44px;padding:0 14px;border-radius:11px;
  background:var(--bg-soft);border:1px solid var(--line);color:var(--text);
  font-size:15px;outline:none;transition:.15s;
}
.field input::placeholder{color:var(--text-mute);font-size:13.5px}
.field input:focus{border-color:#3b6fd4;background:#0f1620;box-shadow:0 0 0 3px rgba(59,130,246,.15)}
.auth-err{min-height:18px;font-size:12.5px;color:#ff6b81;text-align:left;margin-bottom:10px}
.btn-primary{
  width:100%;height:46px;border-radius:11px;font-size:15.5px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--live),var(--live-2));
  box-shadow:0 6px 20px rgba(255,47,82,.36);transition:.15s;
}
.btn-primary:hover{filter:brightness(1.08)}
.btn-primary:active{transform:scale(.985)}
.btn-primary:disabled{opacity:.6;cursor:not-allowed}
.modal-foot{margin-top:16px;font-size:11.5px;color:var(--text-mute)}

/* toast */
.toast{
  position:fixed;left:50%;bottom:12%;transform:translateX(-50%);
  z-index:200;padding:10px 20px;border-radius:11px;font-size:13.5px;
  background:rgba(20,28,40,.95);border:1px solid var(--line);color:var(--text);
  box-shadow:var(--shadow);animation:toastIn .2s ease;max-width:80vw;text-align:center;
}
@keyframes toastIn{from{opacity:0;transform:translate(-50%,10px)}to{opacity:1;transform:translate(-50%,0)}}

.demo-tag{
  position:fixed;left:50%;bottom:8px;transform:translateX(-50%);
  z-index:150;font-size:11px;color:#ffd48a;background:rgba(120,80,0,.6);
  padding:3px 12px;border-radius:20px;border:1px solid rgba(245,158,11,.3);
}

/* ==========================================================================
   响应式：平板 / 手机 / 小窗口
   ========================================================================== */

/* 中等屏幕：评论栏变窄 */
@media (max-width:1100px){
  .chat{flex-basis:300px;width:300px;min-width:260px}
}

/* 窄屏（手机竖屏 / 小窗口）：上下布局 */
@media (max-width:860px){
  main{flex-direction:column}
  .stage{
    flex:0 0 auto;width:100%;
    aspect-ratio:16/9;
  }
  @supports not (aspect-ratio:16/9){
    .stage{height:56.25vw}
  }
  .chat{
    flex:1 1 auto;width:auto;min-width:0;
    border-left:0;border-top:1px solid var(--line);
  }
  .badge-live{top:8px;left:8px;padding:4px 9px 4px 7px;font-size:12px}
  .badge-online{left:8px;bottom:8px;font-size:11.5px;padding:4px 9px}
  .badge-tools{top:7px;right:8px}
  .ico-btn{width:30px;height:30px;padding:7px}
  /* 公告放顶部中间，避开左上角「直播」和右上角工具按钮 */
  .notice{
    top:8px;bottom:auto;left:50%;transform:translateX(-50%);
    max-width:54%;font-size:11px;padding:4px 10px;
  }
}

/* 超窄屏 */
@media (max-width:420px){
  html{font-size:14.5px}
  :root{--topbar-h:48px}
  .brand h1{font-size:14.5px}
  .me{display:none}
  .chat-list{padding:9px 10px;gap:8px}
  .msg .text{font-size:13.5px}
  .badge-online span{font-size:11px}
}

/* 矮窗口（横屏手机 / 小窗口）：压缩顶栏 */
@media (max-height:480px){
  :root{--topbar-h:42px}
  .brand h1{font-size:14px}
  .mini-btn{padding:4px 9px;font-size:12px}
}

/* 横屏手机：左右布局更合适 */
@media (max-width:900px) and (orientation:landscape) and (max-height:520px){
  main{flex-direction:row}
  .stage{aspect-ratio:auto;height:100%;flex:1 1 auto}
  .chat{flex:0 0 240px;width:240px;border-left:1px solid var(--line);border-top:0}
  .chat-head,.chat-form{height:auto;padding:6px 10px}
  .chat-form{flex-wrap:nowrap}
  .veil-cd div{min-width:52px;padding:6px 4px}
  .veil-cd b{font-size:18px}
}

/* 触摸设备去掉 hover 效果残留 */
@media (hover:none){
  .enter-btn:hover{transform:none}
  .chat-form button:hover{filter:none}
}

/* 大屏超宽：限制视频区最大宽度，避免过度拉伸 */
@media (min-width:1500px){
  .chat{flex-basis:380px;width:380px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}