:root {
  --bg: #16181d; --panel: #20232b; --panel2: #2a2e38;
  --text: #e6e8ec; --muted: #9aa0ac; --accent: #4f8cff; --danger: #ff5a5a;
  --speak: #43d17a; --line: #333846;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg); color: var(--text);
  font: 15px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.hidden { display: none !important; }
.screen { min-height: 100%; }
button { cursor: pointer; font: inherit; }
input, select { font: inherit; }

/* вход */
#join-screen { display: flex; align-items: center; justify-content: center; padding: 24px 16px; }
.join-card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 28px; width: 100%; max-width: 360px; }
.join-card h1 { font-size: 20px; margin: 0 0 20px; }
.join-card label { display: block; margin-bottom: 14px; color: var(--muted); font-size: 13px; }
.join-card input { display: block; width: 100%; margin-top: 6px; padding: 11px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel2); color: var(--text); }
#join-btn { width: 100%; padding: 12px; border: 0; border-radius: 10px; background: var(--accent); color: #fff; font-weight: 600; margin-top: 6px; }
.error { color: var(--danger); font-size: 13px; min-height: 18px; margin: 10px 0 0; }

/* комната */
.topbar { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: var(--bg); }
.room-label { font-weight: 600; color: var(--muted); }
.room-label::before { content: "# "; color: var(--accent); }
.topbar-actions { display: flex; gap: 8px; }
.icon-btn { position: relative; width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel); color: var(--text); font-size: 17px; display: inline-flex; align-items: center; justify-content: center; }
.icon-btn.active { border-color: var(--accent); background: rgba(79,140,255,.15); }
.icon-btn.off { color: var(--danger); }
.icon-btn.speaking { box-shadow: 0 0 0 2px var(--speak); }
.icon-btn.danger { color: var(--danger); }
.badge { position: absolute; top: -6px; right: -6px; background: var(--danger); color: #fff; border-radius: 10px; font-size: 11px; padding: 1px 5px; }

.room-main { padding: 16px; max-width: 720px; margin: 0 auto; }
.peers { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.peer { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; }
.peer-head { display: flex; align-items: center; gap: 10px; }
.peer-name { flex: 1; font-weight: 600; }
.dot { width: 12px; height: 12px; border-radius: 50%; background: #555b68; flex: none; transition: background .1s, box-shadow .1s; }
.dot.speaking { background: var(--speak); box-shadow: 0 0 8px var(--speak); }
.mute-btn { width: 34px; height: 34px; border-radius: 8px; border: 1px solid var(--line); background: var(--panel2); color: var(--text); }
.mute-btn.active { color: var(--danger); border-color: var(--danger); }
.peer-vol { display: flex; align-items: center; gap: 12px; margin-top: 10px; }
.vol { flex: 1; accent-color: var(--accent); }
.vol-label { width: 52px; text-align: right; color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }

/* панели (настройки/чат) */
.panel { position: fixed; top: 0; right: 0; bottom: 0; width: 100%; max-width: 360px; background: var(--panel); border-left: 1px solid var(--line); padding: 18px; overflow-y: auto; z-index: 10; }
.panel h2 { margin: 0 0 16px; font-size: 17px; }
.panel h3 { margin: 20px 0 8px; font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.panel label { display: block; margin-bottom: 12px; color: var(--muted); font-size: 13px; }
.panel select, .panel input[type=range] { display: block; width: 100%; margin-top: 6px; }
.panel select { padding: 10px; border-radius: 9px; border: 1px solid var(--line); background: var(--panel2); color: var(--text); }
.panel .check { display: flex; align-items: center; gap: 8px; color: var(--text); }
.panel .check input { width: auto; margin: 0; }
.hint { display: block; color: var(--muted); font-size: 12px; margin-top: 4px; }
.panel button { width: 100%; padding: 11px; border: 0; border-radius: 10px; background: var(--accent); color: #fff; font-weight: 600; margin-top: 12px; }
.panel button.secondary { background: var(--panel2); color: var(--text); border: 1px solid var(--line); }

/* чат */
.chat-log { display: flex; flex-direction: column; gap: 10px; height: calc(100% - 160px); overflow-y: auto; padding-right: 4px; }
.msg { background: var(--panel2); border-radius: 10px; padding: 8px 10px; max-width: 90%; align-self: flex-start; }
.msg.mine { align-self: flex-end; background: rgba(79,140,255,.18); }
.msg-who { font-size: 12px; color: var(--muted); margin-bottom: 2px; }
.msg-text { white-space: pre-wrap; word-break: break-word; }
.msg-img { max-width: 220px; border-radius: 8px; margin-top: 4px; display: block; }
.msg-file { color: var(--accent); text-decoration: none; }
.chat-form { display: flex; gap: 6px; margin-top: 12px; align-items: center; }
.chat-form input[type=text] { flex: 1; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel2); color: var(--text); }
.upload-status { color: var(--muted); font-size: 12px; margin-top: 6px; }

.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--panel2); color: var(--text); border: 1px solid var(--line); border-radius: 10px; padding: 10px 16px; z-index: 50; box-shadow: 0 6px 24px rgba(0,0,0,.4); }

@media (max-width: 480px) {
  .room-main { padding: 12px; }
  .panel { max-width: 100%; }
}