:root {
  color-scheme: dark;
  --bg: #14161a;
  --panel: #1e2228;
  --panel2: #262b33;
  --line: #2c313a;
  --accent: #4c8bf5;
  --good: #3ba55d;
  --danger: #ed4245;
  --text: #e7e9ee;
  --muted: rgba(231, 233, 238, 0.6);
}
* { box-sizing: border-box; }
/* Author display rules (.modal{display:flex}, #app{display:flex}, …) would
   otherwise beat the UA [hidden] rule and leave overlays rendered. Make the
   hidden attribute authoritative everywhere. */
[hidden] { display: none !important; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}
button {
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 6px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 14px;
}
button:hover { filter: brightness(1.08); }
button.danger { background: var(--danger); }
input[type="text"], input:not([type]), #roomInput, #nameInput, #chatInput, #jbAddUrl {
  background: var(--bg);
  border: 1px solid #333a45;
  color: var(--text);
  padding: 9px;
  border-radius: 6px;
  font-size: 15px;
}

/* ---------- Join screen ---------- */
#joinScreen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
#joinForm {
  width: min(360px, 90vw);
  background: var(--panel);
  padding: 24px;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
#joinForm h1 { margin: 0 0 4px; font-size: 22px; }
label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; }
.join-error { color: var(--danger); margin: 0; font-size: 13px; min-height: 0; }
.join-error:empty { display: none; }
.version { font-size: 12px; opacity: 0.45; }

/* ---------- Topbar ---------- */
#app { display: flex; flex-direction: column; height: 100vh; }
#topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  flex: none;
}
.brand { font-weight: 700; }
.room-label { font-weight: 400; opacity: 0.6; margin-left: 8px; font-size: 14px; }
.menu { position: relative; }
#menuBtn { background: var(--panel2); font-size: 18px; line-height: 1; padding: 6px 12px; }
.dropdown {
  position: absolute;
  right: 0;
  top: 110%;
  background: var(--panel2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 160px;
  z-index: 30;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}
.dropdown button { background: transparent; text-align: left; padding: 9px 10px; }
.dropdown button:hover { background: rgba(255, 255, 255, 0.06); }
.dropdown button.danger { color: var(--danger); }
.dropdown button.danger:hover { background: rgba(237, 66, 69, 0.15); }

/* ---------- Workspace + focusable panels ---------- */
#workspace {
  flex: 1;
  min-height: 0;
  display: grid;
  gap: 10px;
  padding: 10px;
  grid-template-columns: 2.5fr 1fr;
  grid-template-rows: 1fr 1fr;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  overflow: hidden;
}
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  flex: none;
}
.panel-title { font-weight: 600; font-size: 14px; }
.focus-btn { background: transparent; opacity: 0.55; padding: 2px 8px; font-size: 15px; }
.focus-btn:hover { opacity: 1; }
.panel.focused .focus-btn { color: var(--accent); opacity: 1; }
.panel-body { flex: 1; min-height: 0; overflow: auto; padding: 10px; }
.panel-foot { flex: none; border-top: 1px solid var(--line); padding: 8px 12px; }

/* Focus layout: the focused panel fills the big area; the others stack at right. */
#workspace[data-focus="video"] #panel-video,
#workspace[data-focus="chat"] #panel-chat,
#workspace[data-focus="music"] #panel-music { grid-area: 1 / 1 / 3 / 2; }

#workspace[data-focus="video"] #panel-chat,
#workspace[data-focus="chat"] #panel-video,
#workspace[data-focus="music"] #panel-video { grid-area: 1 / 2 / 2 / 3; }

#workspace[data-focus="video"] #panel-music,
#workspace[data-focus="chat"] #panel-music,
#workspace[data-focus="music"] #panel-chat { grid-area: 2 / 2 / 3 / 3; }

/* ---------- Video grid + tiles ---------- */
#grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}
.panel.focused #grid { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.tile {
  position: relative;
  background: #000;
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border: 2px solid transparent;
  transition: border-color 0.12s ease, box-shadow 0.12s ease;
}
.tile.speaking {
  border-color: var(--good);
  box-shadow: 0 0 0 2px rgba(59, 165, 93, 0.45), 0 0 16px rgba(59, 165, 93, 0.4);
}
.tile video { width: 100%; height: 100%; object-fit: cover; }
.tile-overlay {
  position: absolute;
  left: 8px;
  bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 0, 0, 0.55);
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 13px;
  max-width: calc(100% - 16px);
}
.tile-name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tile-mic { font-size: 13px; }
.tile-mic.muted { color: var(--danger); }
.tile-vol {
  position: absolute;
  top: 8px;
  right: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.tile-vol-btn {
  background: rgba(0, 0, 0, 0.55);
  padding: 3px 7px;
  font-size: 13px;
  border-radius: 6px;
}
.tile-vol-slider {
  width: 80px;
  display: none;
  accent-color: var(--accent);
}
.tile-vol.open .tile-vol-slider { display: inline-block; }
.tile-vol.deafened .tile-vol-btn { color: var(--danger); }

/* media controls */
.media-controls { display: flex; gap: 8px; }
.ctl { background: var(--panel2); }
.ctl.off { background: var(--danger); }

/* ---------- Chat ---------- */
.chat-body { display: flex; flex-direction: column; padding: 0; }
.chat-log { flex: 1; min-height: 0; overflow-y: auto; padding: 10px; display: flex; flex-direction: column; gap: 8px; }
.chat-msg { font-size: 14px; line-height: 1.35; }
.chat-msg .who { font-weight: 600; margin-right: 6px; }
.chat-msg .ts { font-size: 11px; opacity: 0.4; margin-left: 6px; }
.chat-msg .body { opacity: 0.92; word-break: break-word; }
.chat-msg.system { font-style: italic; opacity: 0.55; font-size: 13px; }
.chat-mine .who { color: var(--accent); }
.chat-form { display: flex; gap: 8px; padding: 10px; border-top: 1px solid var(--line); }
.chat-form input { flex: 1; }

/* ---------- Music ---------- */
.music-body { display: flex; flex-direction: column; gap: 10px; }
.jb-now { display: flex; align-items: center; gap: 12px; }
.jb-cover { width: 48px; height: 48px; border-radius: 6px; object-fit: cover; background: #000; flex: none; }
#jbTitle { font-weight: 600; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.jb-sub { font-size: 12px; opacity: 0.65; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.jb-controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.jb-controls button { background: var(--panel2); padding: 6px 10px; font-size: 15px; line-height: 1; }
#jbPlay { background: var(--accent); min-width: 42px; }
.jb-time { font-size: 12px; opacity: 0.7; font-variant-numeric: tabular-nums; min-width: 34px; }
#jbSeek { flex: 1; min-width: 100px; accent-color: var(--accent); }
.jb-vol { display: flex; align-items: center; gap: 6px; font-size: 13px; }
.jb-vol input { width: 80px; accent-color: var(--accent); }
.jb-add { display: flex; gap: 8px; }
.jb-add input { flex: 1; }
.jb-error { color: #ff8a8a; font-size: 13px; }
.jb-error:empty { display: none; }
.jb-queue { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.jb-item { display: flex; align-items: center; gap: 8px; border-radius: 6px; }
.jb-item.current { background: rgba(76, 139, 245, 0.15); }
.jb-item-play { flex: 1; text-align: left; background: transparent; display: flex; flex-direction: column; gap: 2px; padding: 6px 8px; }
.jb-item-title { font-size: 14px; }
.jb-item-sub { font-size: 11px; opacity: 0.6; }
.jb-item-rm { background: transparent; opacity: 0.5; padding: 6px 8px; }
.jb-item-rm:hover { opacity: 1; }
.jb-clear { background: #44323a; align-self: flex-start; }
#jbGesture { background: var(--accent); align-self: flex-start; }
#jbAudio, #jbQueuePanel, #jbQueueToggle { display: none; }

/* ---------- Settings modal ---------- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 16px;
}
.modal-card {
  width: min(560px, 96vw);
  max-height: 90vh;
  overflow: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: var(--panel);
}
.modal-head h2 { margin: 0; font-size: 18px; }
.modal-close { background: transparent; font-size: 16px; opacity: 0.7; }
.modal-close:hover { opacity: 1; }
.modal-body { padding: 16px 20px 24px; }
.modal-body h3 { margin: 0 0 8px; font-size: 14px; opacity: 0.8; }
.modal-body hr { border: 0; border-top: 1px solid var(--line); margin: 14px 0; }
.modal-body .row { display: flex; align-items: center; gap: 10px; padding: 7px 0; font-size: 14px; }
.modal-body .row span { display: flex; flex-direction: column; gap: 2px; }
.modal-body small { opacity: 0.6; font-size: 11px; }
.modal-body input[type="range"] { flex: 1; margin-left: auto; max-width: 160px; accent-color: var(--accent); }
.modal-body output { opacity: 0.7; font-size: 12px; font-weight: 600; }

/* ---------- Responsive: stack panels on narrow screens ---------- */
@media (max-width: 760px) {
  #workspace { grid-template-columns: 1fr; grid-template-rows: 1.4fr 1fr 1fr; }
  #workspace[data-focus] .panel { grid-area: auto !important; }
  #workspace[data-focus="video"] #panel-video,
  #workspace[data-focus="chat"] #panel-chat,
  #workspace[data-focus="music"] #panel-music { grid-row: span 1; order: -1; }
}