:root {
  color-scheme: dark;
  --bg: #0b0f17;
  --bg-elevated: #121826;
  --bg-panel: #171f31;
  --border: rgba(255, 255, 255, 0.08);
  --text: #eef2ff;
  --muted: #94a3b8;
  --accent: #4f8cff;
  --accent-hover: #6ea0ff;
  --danger: #ef4444;
  --danger-hover: #f87171;
  --success: #22c55e;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --radius: 16px;
  --radius-sm: 10px;
  --tile-gap: 10px;
  --topbar-h: 56px;
  --controls-h: 68px;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
}

button, input, select { font: inherit; }

.muted { color: var(--muted); }
.fine-print { font-size: 0.88rem; margin: 0; }

/* ── Landing ── */

.landing-body {
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at top left, rgba(79, 140, 255, 0.18), transparent 30%),
    radial-gradient(circle at bottom right, rgba(34, 197, 94, 0.12), transparent 28%),
    var(--bg);
}

.landing { width: min(1040px, 100%); }

.landing-header {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: 28px;
}

.logo-mark {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(79, 140, 255, 0.25), rgba(34, 197, 94, 0.18));
  border: 1px solid var(--border);
  color: var(--accent);
}

.landing-header h1 { margin: 0 0 4px; font-size: 1.8rem; }

.panels {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 20px;
}

.panel {
  background: rgba(18, 24, 38, 0.88);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}

.panel-wide { grid-column: 1; }

.feature-panel h2 { margin: 0 0 14px; font-size: 1.05rem; }

.feature-list {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 10px;
  color: var(--muted);
  font-size: 0.94rem;
}

.panel-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
}

.tab {
  border: 0;
  background: #1a2338;
  color: var(--muted);
  padding: 10px 16px;
  border-radius: 999px;
  cursor: pointer;
}

.tab.active {
  background: rgba(79, 140, 255, 0.2);
  color: #dbeafe;
}

.stack { display: grid; gap: 14px; }

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

label { display: grid; gap: 6px; font-size: 0.92rem; }

input[type="text"],
input[type="password"],
select {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #0f1524;
  color: var(--text);
}

input:focus, select:focus {
  outline: 2px solid rgba(79, 140, 255, 0.45);
  border-color: rgba(79, 140, 255, 0.45);
}

.advanced-block {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  background: rgba(0, 0, 0, 0.15);
}

.advanced-block summary {
  cursor: pointer;
  font-weight: 600;
  margin-bottom: 10px;
}

.advanced-grid {
  display: grid;
  gap: 12px;
}

.check-row {
  display: flex !important;
  align-items: center;
  gap: 10px;
}

.check-row input { width: auto; }

.btn {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  cursor: pointer;
  background: #243049;
  color: var(--text);
}

.btn:hover { background: #2d3a57; }
.btn.primary { background: linear-gradient(135deg, #4f8cff, #3b71e8); }
.btn.primary:hover { background: linear-gradient(135deg, var(--accent-hover), #4f8cff); }
.btn.tiny { padding: 6px 12px; font-size: 0.82rem; }
.btn.danger {
  background: rgba(239, 68, 68, 0.18);
  border-color: rgba(239, 68, 68, 0.45);
  color: #fecaca;
}
.btn.danger:hover { background: rgba(239, 68, 68, 0.28); }

.banner {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.banner.error {
  background: rgba(239, 68, 68, 0.14);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: #fecaca;
}

.banner.warn {
  background: rgba(245, 158, 11, 0.14);
  border: 1px solid rgba(245, 158, 11, 0.35);
  color: #fde68a;
}

.join-panel { max-width: 520px; }
.join-page .landing-header { margin-bottom: 20px; }

/* ── Lobby ── */

.lobby-body {
  min-height: 100dvh;
  padding: 20px;
  background:
    radial-gradient(circle at top, rgba(79, 140, 255, 0.12), transparent 40%),
    var(--bg);
}

.lobby { width: min(1100px, 100%); margin: 0 auto; }

.lobby-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.eyebrow {
  margin: 0 0 4px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  color: var(--accent);
}

.lobby-header h1 { margin: 0 0 6px; }

.lobby-room-meta {
  display: grid;
  gap: 6px;
  justify-items: end;
  text-align: right;
}

.lobby-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 18px;
}

.preview-wrap {
  position: relative;
  aspect-ratio: 16 / 10;
  min-height: 240px;
  border-radius: var(--radius);
  overflow: hidden;
  background: #0f172a;
  border: 1px solid var(--border);
}

.preview-wrap video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview-wrap video.mirrored { transform: scaleX(-1); }

.preview-avatar {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 4rem;
  font-weight: 700;
  background: linear-gradient(145deg, #1e293b, #334155);
  color: #dbeafe;
}

.preview-status {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 12px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.55);
  font-size: 0.85rem;
}

.preview-controls {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.meter-wrap { margin-top: 14px; }
.meter {
  height: 8px;
  border-radius: 999px;
  background: #1e293b;
  overflow: hidden;
}
.meter-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, #22c55e, #4ade80);
  transition: width 0.08s linear;
}

.lobby-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.lobby-settings h2 { margin: 0 0 14px; font-size: 1.05rem; }

/* ── Room shell ── */

.room-body {
  height: 100dvh;
  overflow: hidden;
}

.room-shell {
  display: grid;
  grid-template-rows: auto 1fr auto;
  height: 100%;
}

.room-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  min-height: var(--topbar-h);
  border-bottom: 1px solid var(--border);
  background: rgba(11, 15, 23, 0.92);
  backdrop-filter: blur(10px);
}

.room-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.room-meta strong {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 42vw;
}

.room-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.82rem;
  padding: 4px 10px;
  border-radius: 999px;
  background: #1a2338;
  border: 1px solid var(--border);
  cursor: pointer;
  white-space: nowrap;
}

.room-status {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
}

.pill {
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(79, 140, 255, 0.16);
  color: #bfdbfe;
  font-size: 0.78rem;
  white-space: nowrap;
}

.pill.ok { background: rgba(34, 197, 94, 0.16); color: #bbf7d0; }
.pill.warn { background: rgba(245, 158, 11, 0.16); color: #fde68a; }

.mobile-menu-btn { display: none; }

.room-main {
  display: grid;
  grid-template-columns: 1fr;
  min-height: 0;
  position: relative;
}

.room-main.side-open {
  grid-template-columns: 1fr min(360px, 40vw);
}

/* ── Video grid ── */

.video-stage {
  display: grid;
  gap: var(--tile-gap);
  padding: var(--tile-gap);
  overflow: auto;
  align-content: start;
  min-height: 0;
  height: 100%;
  background:
    radial-gradient(circle at center, rgba(79, 140, 255, 0.06), transparent 55%),
    #0a0e16;
}

.video-stage.layout-1 { grid-template-columns: 1fr; }
.video-stage.layout-2 { grid-template-columns: repeat(2, 1fr); }
.video-stage.layout-3,
.video-stage.layout-4 { grid-template-columns: repeat(2, 1fr); }
.video-stage.layout-5,
.video-stage.layout-6 { grid-template-columns: repeat(3, 1fr); }
.video-stage.layout-7,
.video-stage.layout-8,
.video-stage.layout-9 { grid-template-columns: repeat(3, 1fr); }
.video-stage.layout-10,
.video-stage.layout-11,
.video-stage.layout-12 { grid-template-columns: repeat(3, 1fr); }
.video-stage.layout-13,
.video-stage.layout-14,
.video-stage.layout-15,
.video-stage.layout-16 { grid-template-columns: repeat(4, 1fr); }

.video-stage:not(.speaker-mode) {
  align-content: stretch;
  align-items: stretch;
  grid-auto-flow: dense;
}

.video-stage:not(.speaker-mode) .video-tile {
  aspect-ratio: unset;
  height: 100%;
}

.video-stage:not(.speaker-mode).layout-1 { grid-template-rows: minmax(0, 1fr); }
.video-stage:not(.speaker-mode).layout-2 { grid-template-rows: minmax(0, 1fr); }
.video-stage:not(.speaker-mode).layout-3,
.video-stage:not(.speaker-mode).layout-4 { grid-template-rows: repeat(2, minmax(0, 1fr)); }
.video-stage:not(.speaker-mode).layout-5,
.video-stage:not(.speaker-mode).layout-6 { grid-template-rows: repeat(2, minmax(0, 1fr)); }
.video-stage:not(.speaker-mode).layout-7,
.video-stage:not(.speaker-mode).layout-8,
.video-stage:not(.speaker-mode).layout-9 { grid-template-rows: repeat(3, minmax(0, 1fr)); }
.video-stage:not(.speaker-mode).layout-10,
.video-stage:not(.speaker-mode).layout-11,
.video-stage:not(.speaker-mode).layout-12 { grid-template-rows: repeat(4, minmax(0, 1fr)); }
.video-stage:not(.speaker-mode).layout-13,
.video-stage:not(.speaker-mode).layout-14,
.video-stage:not(.speaker-mode).layout-15,
.video-stage:not(.speaker-mode).layout-16 { grid-template-rows: repeat(4, minmax(0, 1fr)); }

.video-stage:not(.speaker-mode).grid-overflow.grid-cap-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-template-rows: repeat(2, minmax(0, 1fr)); }
.video-stage:not(.speaker-mode).grid-overflow.grid-cap-6 { grid-template-columns: repeat(3, minmax(0, 1fr)); grid-template-rows: repeat(2, minmax(0, 1fr)); }
.video-stage:not(.speaker-mode).grid-overflow.grid-cap-9 { grid-template-columns: repeat(3, minmax(0, 1fr)); grid-template-rows: repeat(3, minmax(0, 1fr)); }
.video-stage:not(.speaker-mode).grid-overflow.grid-cap-12 { grid-template-columns: repeat(3, minmax(0, 1fr)); grid-template-rows: repeat(4, minmax(0, 1fr)); }
.video-stage:not(.speaker-mode).grid-overflow.grid-cap-16 { grid-template-columns: repeat(4, minmax(0, 1fr)); grid-template-rows: repeat(4, minmax(0, 1fr)); }

.video-tile.focusable {
  cursor: pointer;
}

.video-tile.focusable:hover {
  border-color: rgba(79, 140, 255, 0.45);
}

.video-stage.speaker-mode {
  display: flex;
  flex-direction: column;
  gap: var(--tile-gap);
}

.video-stage.speaker-mode .video-tile.speaker-active {
  flex: 1 1 auto;
  min-height: 320px;
  aspect-ratio: auto;
}

.video-stage.speaker-mode .video-tile:not(.speaker-active) {
  flex: 0 0 auto;
  min-height: 110px;
  max-height: 130px;
  aspect-ratio: 16 / 10;
}

.video-tile {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: #111827;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  min-height: 0;
  min-width: 0;
  aspect-ratio: 16 / 10;
}

.video-tile video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #0f172a;
  display: block;
}

.video-tile video.mirrored { transform: scaleX(-1); }

.video-tile.self-tile { outline: 2px solid rgba(79, 140, 255, 0.45); }

.video-tile.cam-disabled video { opacity: 0 !important; }

.video-tile.hand-raised {
  outline: 2px solid rgba(245, 158, 11, 0.65);
}

.video-tile.is-sharing {
  outline: 2px solid rgba(34, 197, 94, 0.55);
}

.tile-avatar {
  position: absolute;
  inset: 0;
  display: none;
  place-items: center;
  font-size: clamp(2rem, 8vw, 4rem);
  font-weight: 700;
  background: linear-gradient(145deg, #1e293b, #334155);
  color: #dbeafe;
  pointer-events: none;
}

.video-tile.cam-disabled .tile-avatar { display: grid; }

.tile-status { display: none; }

.tile-badges {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: flex-end;
  flex-shrink: 0;
}

.tile-badge {
  font-size: 0.68rem;
  line-height: 1;
  padding: 3px 7px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.88);
  color: #e2e8f0;
  white-space: nowrap;
}

.tile-badge.badge-mute { color: #fecaca; }
.tile-badge.badge-cam { color: #fecaca; }
.tile-badge.badge-share { color: #bbf7d0; }
.tile-badge.badge-hand { color: #fde68a; }

.tile-label {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.62);
  backdrop-filter: blur(6px);
  font-size: 0.88rem;
  z-index: 2;
}

.tile-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Side panel ── */

.side-panel {
  display: grid;
  grid-template-rows: auto 1fr;
  border-left: 1px solid var(--border);
  background: var(--bg-elevated);
  min-width: 0;
  min-height: 0;
}

.side-panel[hidden] { display: none !important; }

.side-tabs {
  display: flex;
  gap: 6px;
  padding: 10px;
  border-bottom: 1px solid var(--border);
}

.side-tab {
  flex: 1;
  border: 0;
  background: #1a2338;
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.85rem;
}

.side-tab.active {
  background: rgba(79, 140, 255, 0.2);
  color: #dbeafe;
}

.side-content {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 0;
}

.side-content[hidden] { display: none !important; }

.side-content[data-side-panel="people"] { grid-template-rows: auto 1fr; }
.side-content[data-side-panel="settings"] { grid-template-rows: auto 1fr; display: block; overflow: auto; }

.side-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}

.side-head h2 { margin: 0; font-size: 1rem; }

.icon-btn {
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 999px;
  background: #243049;
  color: var(--text);
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
}

.people-list {
  list-style: none;
  margin: 0;
  padding: 10px;
  overflow: auto;
  display: grid;
  gap: 8px;
}

.person-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  background: #141c2d;
  border: 1px solid var(--border);
}

.person-row.self { border-color: rgba(79, 140, 255, 0.35); }

.person-row strong { display: block; font-size: 0.92rem; }
.person-row .muted { font-size: 0.78rem; }

.person-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
}

.settings-stack { padding: 14px; }

.invite-card {
  display: grid;
  gap: 10px;
  justify-items: center;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.18);
  text-align: center;
}

.invite-card-title {
  font-size: 0.92rem;
  font-weight: 600;
}

.invite-qr-wrap {
  padding: 10px;
  border-radius: 12px;
  background: #fff;
  line-height: 0;
}

.invite-qr-wrap img,
.invite-qr-wrap canvas {
  display: block;
  width: 156px;
  height: 156px;
}

.invite-code {
  margin: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 1rem;
  letter-spacing: 0.06em;
  color: #dbeafe;
}

.invite-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.chat-messages {
  overflow: auto;
  padding: 14px;
  display: grid;
  gap: 10px;
  align-content: start;
  min-height: 0;
}

.chat-msg { font-size: 0.92rem; line-height: 1.45; }
.chat-msg strong { color: #bfdbfe; }

.chat-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--border);
}

/* ── Controls ── */

.controls-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 10px calc(8px + env(safe-area-inset-bottom));
  min-height: var(--controls-h);
  border-top: 1px solid var(--border);
  background: rgba(11, 15, 23, 0.96);
  position: relative;
  z-index: 12;
  overflow: visible;
}

.control-btn-group {
  display: inline-flex;
  align-items: stretch;
  max-width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #141c2d;
  overflow: visible;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.control-btn-group > .control-btn,
.control-btn-group > .reaction-menu-wrap > .control-btn {
  min-width: 46px;
  display: grid;
  gap: 2px;
  justify-items: center;
  padding: 6px 8px;
  border: 0;
  border-radius: 0;
  border-right: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  touch-action: manipulation;
}

.control-btn-group > .control-btn:first-child,
.control-btn-group > .reaction-menu-wrap:first-child > .control-btn {
  border-top-left-radius: 11px;
  border-bottom-left-radius: 11px;
}

.control-btn-group > .control-btn:last-child,
.control-btn-group > .reaction-menu-wrap:last-child > .control-btn {
  border-right: 0;
  border-top-right-radius: 11px;
  border-bottom-right-radius: 11px;
}

.control-btn-group > .reaction-menu-wrap {
  display: flex;
}

.control-btn {
  min-width: 46px;
  display: grid;
  gap: 2px;
  justify-items: center;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #141c2d;
  color: var(--text);
  cursor: pointer;
  touch-action: manipulation;
}

.control-btn-group > .control-btn:hover,
.control-btn-group > .reaction-menu-wrap > .control-btn:hover,
.control-btn:hover { background: rgba(255, 255, 255, 0.06); }

.control-btn.off,
.control-btn[aria-pressed="true"] {
  background: rgba(239, 68, 68, 0.18);
  color: #fecaca;
}

.control-btn-group > .control-btn.off,
.control-btn-group > .control-btn[aria-pressed="true"] {
  background: rgba(239, 68, 68, 0.18);
  color: #fecaca;
}

.control-btn.active {
  background: rgba(245, 158, 11, 0.18);
  color: #fde68a;
}

.control-btn-group > .control-btn.active {
  background: rgba(245, 158, 11, 0.18);
  color: #fde68a;
}

.control-btn.panel-open,
.icon-btn.panel-open {
  background: rgba(79, 140, 255, 0.18);
  color: #dbeafe;
}

.control-btn-group > .control-btn.panel-open {
  background: rgba(79, 140, 255, 0.18);
  color: #dbeafe;
}

.room-status .icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.room-status .icon-btn .control-icon {
  width: 18px;
  height: 18px;
}

.control-btn.danger {
  background: rgba(239, 68, 68, 0.82);
  border-color: rgba(239, 68, 68, 0.45);
}
.control-btn.danger:hover { background: var(--danger-hover); }

.control-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
}

.control-label { font-size: 0.62rem; color: var(--muted); line-height: 1.1; }

.reaction-menu-wrap { position: relative; z-index: 25; }

.reaction-menu {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  padding: 8px;
  border-radius: 999px;
  background: #111827;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  z-index: 40;
  white-space: nowrap;
}

.reaction-menu[hidden] { display: none !important; }

.react-btn {
  border: 0;
  background: transparent;
  font-size: 1.25rem;
  cursor: pointer;
  padding: 4px;
}

.reaction-layer {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 30;
  overflow: hidden;
}

.float-reaction {
  position: absolute;
  bottom: calc(var(--controls-h) + 20px);
  font-size: 2rem;
  animation: floatUp 2.4s ease-out forwards;
}

@keyframes floatUp {
  0% { opacity: 0; transform: translateY(20px) scale(0.8); }
  15% { opacity: 1; transform: translateY(0) scale(1); }
  100% { opacity: 0; transform: translateY(-120px) scale(1.1); }
}

.toast-stack {
  position: fixed;
  top: calc(var(--topbar-h) + 10px);
  left: 50%;
  transform: translateX(-50%);
  z-index: 40;
  display: grid;
  gap: 8px;
  width: min(420px, calc(100vw - 24px));
}

.toast {
  padding: 10px 14px;
  border-radius: 12px;
  background: rgba(17, 24, 39, 0.94);
  border: 1px solid var(--border);
  opacity: 0;
  transform: translateY(-8px);
  transition: 0.25s ease;
  text-align: center;
  font-size: 0.9rem;
}

.toast.show { opacity: 1; transform: translateY(0); }

/* ── Mobile ── */

@media (max-width: 900px) {
  .panels { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .lobby-grid { grid-template-columns: 1fr; }
  .lobby-header { flex-direction: column; }
  .lobby-room-meta { justify-items: start; text-align: left; }
}

@media (max-width: 820px) {
  .room-main.side-open { grid-template-columns: 1fr; }

  .side-panel {
    position: absolute;
    inset: 0;
    z-index: 15;
    border-left: 0;
  }

  .mobile-menu-btn { display: inline-flex; }

  #peer-count { display: none; }

  .room-meta strong { max-width: 34vw; font-size: 0.92rem; }

  .controls-bar {
    gap: 6px;
    padding-inline: 6px;
  }

  .control-btn-group > .control-btn,
  .control-btn-group > .reaction-menu-wrap > .control-btn,
  .control-btn {
    min-width: 42px;
    padding: 6px 6px;
  }

  .control-label { font-size: 0.58rem; }

  /* Mobile grid: fit all tiles on screen without overlap */
  .video-stage:not(.speaker-mode) {
    overflow: hidden;
    gap: 6px;
    padding: 6px;
    align-content: stretch;
    align-items: stretch;
    grid-auto-flow: dense;
  }

  .video-stage:not(.speaker-mode) .video-tile {
    min-height: 0;
    max-height: 100%;
    height: 100%;
    width: 100%;
    aspect-ratio: unset;
  }

  .video-stage.layout-1:not(.speaker-mode) {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr);
  }

  .video-stage.layout-2:not(.speaker-mode) {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: minmax(0, 1fr);
  }

  .video-stage.layout-3:not(.speaker-mode),
  .video-stage.layout-4:not(.speaker-mode) {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: repeat(2, minmax(0, 1fr));
  }

  .video-stage.layout-5:not(.speaker-mode),
  .video-stage.layout-6:not(.speaker-mode) {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: repeat(3, minmax(0, 1fr));
  }

  .video-stage.layout-7:not(.speaker-mode),
  .video-stage.layout-8:not(.speaker-mode),
  .video-stage.layout-9:not(.speaker-mode) {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-rows: repeat(3, minmax(0, 1fr));
  }

  .video-stage.layout-10:not(.speaker-mode),
  .video-stage.layout-11:not(.speaker-mode),
  .video-stage.layout-12:not(.speaker-mode) {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-rows: repeat(4, minmax(0, 1fr));
  }

  .video-stage.layout-13:not(.speaker-mode),
  .video-stage.layout-14:not(.speaker-mode),
  .video-stage.layout-15:not(.speaker-mode),
  .video-stage.layout-16:not(.speaker-mode) {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    grid-template-rows: repeat(4, minmax(0, 1fr));
  }

  .video-stage:not(.speaker-mode).grid-overflow.grid-cap-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-template-rows: repeat(2, minmax(0, 1fr)); }
  .video-stage:not(.speaker-mode).grid-overflow.grid-cap-6 { grid-template-columns: repeat(3, minmax(0, 1fr)); grid-template-rows: repeat(2, minmax(0, 1fr)); }
  .video-stage:not(.speaker-mode).grid-overflow.grid-cap-9 { grid-template-columns: repeat(3, minmax(0, 1fr)); grid-template-rows: repeat(3, minmax(0, 1fr)); }
  .video-stage:not(.speaker-mode).grid-overflow.grid-cap-12 { grid-template-columns: repeat(3, minmax(0, 1fr)); grid-template-rows: repeat(4, minmax(0, 1fr)); }
  .video-stage:not(.speaker-mode).grid-overflow.grid-cap-16 { grid-template-columns: repeat(4, minmax(0, 1fr)); grid-template-rows: repeat(4, minmax(0, 1fr)); }

  .video-stage.speaker-mode {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    gap: 6px;
    padding: 6px;
  }

  .video-stage.speaker-mode .video-tile {
    min-height: 0;
    aspect-ratio: unset;
    width: 100%;
  }

  .video-stage.speaker-mode .video-tile.speaker-active {
    flex: 1 1 auto;
    min-height: 0;
    max-height: none;
  }

  .video-stage.speaker-mode .video-tile:not(.speaker-active) {
    flex: 0 0 clamp(64px, 14vh, 88px);
    min-height: 0;
    max-height: clamp(64px, 14vh, 88px);
  }

  .tile-label {
    font-size: 0.72rem;
    padding: 4px 8px;
    left: 6px;
    right: 6px;
    bottom: 6px;
    border-radius: 8px;
  }

  .tile-avatar {
    font-size: clamp(1.25rem, 5vw, 2rem);
  }
}

@media (max-width: 420px) {
  .control-label { display: none; }
  .control-btn-group > .control-btn,
  .control-btn-group > .reaction-menu-wrap > .control-btn,
  .control-btn { min-width: 40px; padding: 7px 6px; }
  .room-code { display: none; }
}