:root {
  --bg: #0d0f14;
  --bg-elev: #161a22;
  --bg-elev-2: #1e2330;
  --border: #2a3142;
  --text: #e6e9ef;
  --text-dim: #8b93a7;
  --accent: #6366f1;
  --accent-hover: #7c7ff5;
  --danger: #ef4444;
  --success: #22c55e;
  --radius: 10px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

.hidden { display: none !important; }

/* Landing */
.landing { display: flex; align-items: center; justify-content: center; height: 100vh; padding: 1rem; }
.landing-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3rem 2.5rem;
  text-align: center;
  max-width: 420px;
  width: 100%;
  box-shadow: var(--shadow);
}
.landing-card h1 { margin: 0 0 .5rem; font-size: 2.5rem; letter-spacing: -.02em; }
.tagline { color: var(--text-dim); margin: 0 0 2rem; }
.hint { color: var(--text-dim); font-size: .85rem; margin-top: 1rem; }

/* Buttons */
.btn-primary, .btn-ghost {
  font: inherit; cursor: pointer; border-radius: 8px;
  padding: .65rem 1.2rem; border: 1px solid transparent;
  transition: background .15s, border-color .15s, transform .05s;
}
.btn-primary { background: var(--accent); color: white; border-color: var(--accent); font-weight: 600; }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-primary:active { transform: translateY(1px); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: var(--bg-elev-2); }
.btn-ghost.full { width: 100%; margin-top: .5rem; }

/* Modal */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.7); display: flex; align-items: center; justify-content: center; z-index: 100; padding: 1rem; }
.modal-card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem; max-width: 380px; width: 100%; box-shadow: var(--shadow); }
.modal-card h2 { margin: 0 0 1.25rem; font-size: 1.25rem; }
.modal-card input { width: 100%; margin-bottom: 1rem; }
.modal-card button { width: 100%; }

/* Inputs */
input[type="text"], input[type="url"] {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: .65rem .9rem;
  font: inherit;
  outline: none;
  transition: border-color .15s;
}
input[type="text"]:focus, input[type="url"]:focus { border-color: var(--accent); }

/* Room layout */
.room {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  grid-template-rows: auto minmax(0, 1fr);
  grid-template-areas: "top top" "main side";
  height: 100vh;
  gap: 0;
  min-width: 0;
}

.topbar {
  grid-area: top;
  display: flex; align-items: center; justify-content: space-between;
  padding: .65rem 1rem;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  gap: 1rem;
  min-width: 0;
}
.brand-block { display: flex; flex-direction: column; min-width: 0; flex: 1 1 auto; gap: 2px; }
.brand { font-weight: 700; font-size: 1.05rem; line-height: 1; }
.video-title { color: var(--text-dim); font-size: .8rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topbar-controls { display: flex; align-items: center; gap: .5rem; flex-shrink: 0; flex-wrap: wrap; justify-content: flex-end; }
.ping { color: var(--text-dim); font-size: .75rem; font-family: ui-monospace, monospace; padding: 0 .35rem; }
.ping.good { color: var(--success); }
.ping.warn { color: #fbbf24; }
.ping.bad { color: var(--danger); }
.btn-icon {
  background: transparent; color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; cursor: pointer; padding: .35rem .55rem; font-size: 1rem; line-height: 1;
  transition: background .15s, border-color .15s, color .15s;
}
.btn-icon:hover { background: var(--bg-elev-2); border-color: var(--accent); }
.btn-icon.muted { opacity: .4; }
.btn-icon.active { background: var(--accent); border-color: var(--accent); color: white; }
.lock-toggle { display: flex; align-items: center; gap: .4rem; color: var(--text-dim); font-size: .85rem; cursor: pointer; padding: 0 .25rem; }
.lock-toggle input { accent-color: var(--accent); }

/* Player */
.player-wrap { grid-area: main; display: flex; flex-direction: column; min-width: 0; min-height: 0; padding: 1rem; gap: .75rem; overflow: hidden; }
.player-mount {
  position: relative;
  background: black;
  border-radius: var(--radius);
  overflow: hidden;
  flex: 1 1 0;
  min-height: 0;
  min-width: 0;
}
.player-mount.locked-overlay::after {
  content: "🔒 Host has locked controls";
  position: absolute; bottom: .75rem; left: .75rem;
  background: rgba(0,0,0,.65); padding: .3rem .65rem;
  border-radius: 6px; font-size: .8rem; color: var(--text-dim);
  pointer-events: none;
}
.placeholder { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--text-dim); padding: 1rem; text-align: center; }
#html5-video { width: 100%; height: 100%; display: block; object-fit: contain; background: black; }
#yt-mount { width: 100%; height: 100%; }
#yt-mount iframe { width: 100%; height: 100%; border: 0; }

.locked .player-mount video::-webkit-media-controls { display: none !important; }
.locked .player-mount #yt-mount { pointer-events: none; }
.locked .player-mount video { pointer-events: none; }

.url-form { display: flex; gap: .5rem; }
.url-form input { flex: 1; min-width: 0; }
.status-line { color: var(--text-dim); font-size: .85rem; min-height: 1.2em; }
.status-line.warn { color: #fbbf24; }
.media-warning {
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.5);
  color: #fbbf24;
  padding: .55rem .75rem;
  border-radius: 8px;
  font-size: .85rem;
  line-height: 1.4;
}
.media-warning code { background: rgba(0,0,0,0.35); padding: 1px 5px; border-radius: 4px; font-size: .8rem; color: var(--text); }

/* Sidebar */
.sidebar {
  grid-area: side;
  background: var(--bg-elev);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.tabs { display: flex; border-bottom: 1px solid var(--border); }
.tab {
  flex: 1; background: transparent; border: none; color: var(--text-dim);
  padding: .85rem .5rem; cursor: pointer; font: inherit;
  border-bottom: 2px solid transparent;
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
}
.tab.active { color: var(--text); border-bottom-color: var(--accent); }
.tab:hover { color: var(--text); }
.badge { background: var(--bg-elev-2); color: var(--text-dim); padding: 1px 7px; border-radius: 999px; font-size: .75rem; }
.tab.active .badge { background: var(--accent); color: white; }
.badge.unread { background: var(--danger); color: white; }

.tab-panel { display: none; flex: 1; flex-direction: column; min-height: 0; padding: .75rem; }
.tab-panel.active { display: flex; }

/* Chat */
.chat-log { flex: 1; overflow-y: auto; padding-right: .25rem; display: flex; flex-direction: column; gap: .5rem; scrollbar-width: thin; }
.chat-msg { background: var(--bg-elev-2); padding: .45rem .65rem; border-radius: 8px; word-wrap: break-word; line-height: 1.35; position: relative; }
.chat-msg .meta { display: flex; align-items: baseline; gap: .35rem; margin-bottom: 2px; }
.chat-msg .nick { color: var(--accent); font-weight: 600; font-size: .85rem; }
.chat-msg .time { color: var(--text-dim); font-size: .7rem; font-family: ui-monospace, monospace; }
.chat-msg.self .nick { color: var(--success); }
.chat-msg.system { background: transparent; color: var(--text-dim); font-style: italic; font-size: .85rem; padding: .15rem .25rem; }
.chat-msg a { color: var(--accent-hover); }
.reactions { display: flex; gap: .25rem; padding: .25rem 0; flex-wrap: wrap; }
.react-btn {
  background: var(--bg-elev-2); border: 1px solid transparent; border-radius: 6px;
  padding: .25rem .5rem; cursor: pointer; font-size: 1.1rem; line-height: 1;
  transition: transform .1s, border-color .15s;
}
.react-btn:hover { border-color: var(--accent); transform: translateY(-1px); }
.react-btn:active { transform: translateY(0); }
.chat-form { display: flex; gap: .5rem; margin-top: .25rem; }
.chat-form input { flex: 1; min-width: 0; }

/* Queue / users */
.queue-list, .user-list { list-style: none; padding: 0; margin: 0; flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: .4rem; }
.queue-item, .user-item { background: var(--bg-elev-2); border-radius: 8px; padding: .55rem .75rem; display: flex; align-items: center; justify-content: space-between; gap: .5rem; }
.queue-item .title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; font-size: .9rem; }
.queue-item button { background: transparent; border: none; color: var(--text-dim); cursor: pointer; font-size: 1.1rem; padding: 0 .2rem; }
.queue-item button:hover { color: var(--danger); }
.user-item .host-pill { background: var(--accent); color: white; padding: 1px 7px; border-radius: 999px; font-size: .7rem; font-weight: 600; }
.user-item .buffer-pill { background: #f59e0b; color: black; padding: 1px 7px; border-radius: 999px; font-size: .7rem; }

/* Toast */
.toast {
  position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%);
  background: var(--bg-elev-2); border: 1px solid var(--border);
  padding: .65rem 1rem; border-radius: 8px; box-shadow: var(--shadow);
  z-index: 200; font-size: .9rem;
}

/* Mobile */
@media (max-width: 900px) {
  .room {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 1fr;
    grid-template-areas: "top" "main" "side";
    overflow-y: auto;
  }
  .sidebar { border-left: none; border-top: 1px solid var(--border); height: 50vh; }
  .player-wrap { padding: .5rem; }
  body { overflow: auto; }
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--bg-elev-2); }