:root {
  --bg: #14151a;
  --panel: #1e2028;
  --line: #2e313c;
  --text: #e8e9ee;
  --muted: #9396a3;
  --accent: #ff7a59;
  --ok: #4cc38a;
  --warn: #f5b942;
  --bad: #ef5f5f;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
}

button, input, select {
  font: inherit;
  color: inherit;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 7px 14px;
}
button { cursor: pointer; }
button:hover { border-color: var(--muted); }
button.primary { background: var(--accent); border-color: var(--accent); color: #1a1208; font-weight: 600; padding: 12px 36px; font-size: 17px; }
input:focus, select:focus, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.spacer { flex: 1; }
.hint { color: var(--muted); font-size: 13px; }
.error { color: var(--bad); font-size: 13px; min-height: 1.5em; margin: 6px 0 0; }

/* 首页 */
.lobby { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; padding: 24px; text-align: center; }
.lobby h1 { margin: 0; font-size: 40px; letter-spacing: 4px; }
.lobby .sub { margin: 0 0 18px; color: var(--muted); }
.lobby .hint { max-width: 340px; margin: 0; }
.join { display: flex; gap: 8px; margin-top: 10px; }
.join input { width: 170px; text-transform: uppercase; letter-spacing: 2px; text-align: center; }

/* 房间 */
.room { max-width: 1100px; margin: 0 auto; padding: 12px 16px 32px; }
.bar { display: flex; align-items: center; gap: 14px; padding: 6px 0 12px; flex-wrap: wrap; }
.brand { font-weight: 700; font-size: 18px; letter-spacing: 2px; }
.roominfo { color: var(--muted); }
.roominfo b { color: var(--text); letter-spacing: 2px; font-family: Consolas, monospace; }
.bar-hint { margin: -4px 0 10px; }
.conn { display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: 13px; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); display: inline-block; flex: none; }
.dot.ok { background: var(--ok); }
.dot.warn { background: var(--warn); }
.dot.bad { background: var(--bad); }

.player { position: relative; background: #000; border-radius: 10px; overflow: hidden; }
.player video { display: block; width: 100%; aspect-ratio: 16 / 9; background: #000; cursor: pointer; }
.player:fullscreen { border-radius: 0; display: flex; flex-direction: column; }
.player:fullscreen video { flex: 1; min-height: 0; aspect-ratio: auto; }
.player:fullscreen .controls { position: absolute; left: 0; right: 0; bottom: 0; background: linear-gradient(transparent, rgba(0, 0, 0, .85)); transition: opacity .25s; }
.player:fullscreen.idle .controls { opacity: 0; }
.player:fullscreen.idle { cursor: none; }

.overlay { position: absolute; left: 50%; top: 42%; transform: translate(-50%, -50%); background: rgba(0, 0, 0, .7); padding: 10px 20px; border-radius: 22px; pointer-events: none; white-space: nowrap; }
.unblock { position: absolute; left: 50%; top: 42%; transform: translate(-50%, -50%); background: var(--accent); border-color: var(--accent); color: #1a1208; font-weight: 600; padding: 12px 26px; }
.toast { position: absolute; left: 16px; top: 14px; background: rgba(0, 0, 0, .7); padding: 6px 14px; border-radius: 16px; font-size: 13px; pointer-events: none; }

.controls { background: var(--panel); padding: 6px 12px 8px; }
.controls .row { display: flex; align-items: center; gap: 10px; }
.controls button, .controls select { padding: 4px 10px; background: transparent; }
.controls .icon { border-color: transparent; font-size: 17px; min-width: 38px; }
.controls .icon:hover { border-color: var(--line); }
.seek { width: 100%; padding: 0; margin: 2px 0 6px; accent-color: var(--accent); border: 0; background: transparent; cursor: pointer; }
.volume { width: 80px; padding: 0; accent-color: var(--accent); border: 0; background: transparent; }
.time { font-family: Consolas, monospace; font-size: 13px; color: var(--muted); }
.ctl { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 6px; }

.panels { display: grid; grid-template-columns: 1fr 1.4fr; gap: 14px; margin-top: 14px; }
@media (max-width: 760px) {
  .panels { grid-template-columns: 1fr; }
  .volume, .ctl-label { display: none; }
  .room { padding: 8px max(10px, env(safe-area-inset-right)) calc(24px + env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-left)); }
  .bar { gap: 10px; }
  .brand { display: none; }
  .controls .row { gap: 6px; }
  .urlform { flex-wrap: wrap; }
}
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; min-width: 0; }
.panel h2 { margin: 0 0 8px; font-size: 14px; color: var(--muted); font-weight: 500; }
.src-title { color: var(--text); margin-left: 6px; }

.members { list-style: none; margin: 0; padding: 0; }
.members li { display: flex; align-items: center; gap: 9px; padding: 5px 0; }
.members .who { width: 3.5em; }
.members .what { color: var(--muted); font-size: 13px; }
.gap { margin: 8px 0 0; font-size: 13px; color: var(--muted); min-height: 1.5em; }
.gap b { color: var(--text); font-family: Consolas, monospace; }

.files { max-height: 220px; overflow-y: auto; margin-bottom: 10px; }
.files button { display: flex; justify-content: space-between; gap: 12px; width: 100%; text-align: left; background: transparent; border-color: transparent; padding: 6px 8px; }
.files button:hover { background: var(--bg); }
.files button.current { color: var(--accent); }
.files .size { color: var(--muted); font-size: 12px; flex: none; }
.files .empty { color: var(--muted); font-size: 13px; padding: 4px 0; }
.urlform { display: flex; gap: 8px; }
.urlform input { flex: 1; min-width: 0; }