/* Classroom Random Arena — Premium Teacher Tool v12 */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;0,9..40,800;1,9..40,500&display=swap');

:root {
  --bg: #f4f6fa;
  --bg-mesh: radial-gradient(ellipse 120% 80% at 50% -20%, rgba(37, 99, 235, 0.07), transparent 55%),
             radial-gradient(ellipse 60% 50% at 100% 50%, rgba(249, 115, 22, 0.04), transparent 50%),
             radial-gradient(ellipse 50% 40% at 0% 80%, rgba(16, 185, 129, 0.04), transparent 45%);
  --surface: #ffffff;
  --surface-elevated: #ffffff;
  --surface-2: #f8fafc;
  --surface-inset: #eef2f7;
  --border: #dbe4ee;
  --border-strong: #c5d3e0;
  --text: #10233c;
  --text-secondary: #334155;
  --muted: #64748b;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-glow: rgba(37, 99, 235, 0.35);
  --primary-soft: #eff6ff;
  --accent: #f97316;
  --accent-dark: #ea580c;
  --accent-glow: rgba(249, 115, 22, 0.4);
  --accent-soft: #fff7ed;
  --success: #10b981;
  --success-soft: #ecfdf5;
  --warning: #f59e0b;
  --warning-soft: #fffbeb;
  --danger: #ef4444;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-xl: 28px;
  --shadow-xs: 0 1px 2px rgba(16, 35, 60, 0.04);
  --shadow-sm: 0 4px 12px rgba(16, 35, 60, 0.06);
  --shadow-md: 0 12px 32px rgba(16, 35, 60, 0.08);
  --shadow-lg: 0 20px 50px rgba(16, 35, 60, 0.1);
  --shadow-arena: 0 24px 60px rgba(16, 35, 60, 0.12), 0 0 0 1px rgba(255, 255, 255, 0.6) inset;
  --shadow-cta: 0 14px 36px rgba(249, 115, 22, 0.35), 0 4px 12px rgba(37, 99, 235, 0.15);
  --font: 'DM Sans', system-ui, -apple-system, sans-serif;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --transition: 0.2s var(--ease-out);
}

body.dark-mode {
  --bg: #0c1017;
  --bg-mesh: radial-gradient(ellipse 100% 60% at 50% -10%, rgba(37, 99, 235, 0.12), transparent 50%),
             radial-gradient(ellipse 50% 40% at 100% 60%, rgba(249, 115, 22, 0.06), transparent 45%);
  --surface: #151b26;
  --surface-elevated: #1a2230;
  --surface-2: #1e2736;
  --surface-inset: #121820;
  --border: #2a3548;
  --border-strong: #3d4d66;
  --text: #f1f5f9;
  --text-secondary: #cbd5e1;
  --muted: #94a3b8;
  --primary-soft: #1e3a5f;
  --accent-soft: #3d2817;
  --success-soft: #064e3b33;
  --warning-soft: #78350f33;
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.5);
  --shadow-arena: 0 24px 60px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
  --shadow-cta: 0 14px 36px rgba(249, 115, 22, 0.25);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  overflow-x: clip;
}

body {
  font-family: var(--font);
  background: var(--bg);
  background-image: var(--bg-mesh);
  background-attachment: fixed;
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-top: 60px;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.rsp-app {
  flex: 1;
  max-width: 1380px;
  margin: 0 auto;
  padding: 16px 20px 28px;
  width: 100%;
  min-width: 0;
  overflow-x: clip;
}

.rsp-sr-only {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0, 0, 0, 0);
}

/* ── Page header ── */
.rsp-page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
  flex-wrap: wrap;
  padding: 18px 22px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(219, 228, 238, 0.9);
  box-shadow: var(--shadow-sm), 0 0 0 1px rgba(255, 255, 255, 0.5) inset;
  position: relative;
  overflow: hidden;
}

body.dark-mode .rsp-page-head {
  background: rgba(21, 27, 38, 0.82);
  border-color: rgba(42, 53, 72, 0.9);
  box-shadow: var(--shadow-sm), 0 0 0 1px rgba(255, 255, 255, 0.03) inset;
}

.rsp-page-head::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--primary) 50%, var(--accent) 100%);
  opacity: 0.9;
}

.rsp-page-head::after {
  content: '';
  position: absolute;
  top: -40%;
  right: -8%;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.rsp-page-head__left {
  flex: 1;
  min-width: 0;
  position: relative;
  z-index: 1;
}

.rsp-page-head__title {
  font-size: clamp(1.35rem, 2.8vw, 1.75rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.15;
  background: linear-gradient(135deg, var(--text) 20%, var(--primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

body.dark-mode .rsp-page-head__title {
  background: linear-gradient(135deg, #f8fafc 10%, #60a5fa 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

.rsp-page-head__sub {
  font-size: 0.84rem;
  color: var(--muted);
  margin-top: 5px;
  font-weight: 500;
  max-width: 36ch;
  line-height: 1.45;
}

.rsp-page-head__badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--primary-dark);
  background: linear-gradient(135deg, var(--primary-soft) 0%, rgba(255, 255, 255, 0.9) 100%);
  border: 1px solid rgba(37, 99, 235, 0.22);
  padding: 8px 14px;
  border-radius: 999px;
  white-space: nowrap;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.08);
}

body.dark-mode .rsp-page-head__badge {
  color: #93c5fd;
  background: linear-gradient(135deg, rgba(30, 58, 95, 0.8) 0%, rgba(26, 34, 48, 0.9) 100%);
  border-color: rgba(59, 130, 246, 0.25);
}

.rsp-page-head__badge svg {
  opacity: 0.9;
  color: var(--primary);
  flex-shrink: 0;
}

/* ── Layout ── */
.random-tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 340px) minmax(0, 1fr) minmax(0, 280px);
  gap: 18px;
  align-items: start;
  width: 100%;
  min-width: 0;
}

.rsp-side--left,
.rsp-side--right {
  min-width: 0;
}

.rsp-side--left { position: sticky; top: 76px; }
.rsp-side--right { display: flex; flex-direction: column; gap: 14px; position: sticky; top: 76px; }

.rsp-arena-col { min-width: 0; }

/* ── Class roster (left rail) ── */
.class-roster {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  max-width: 100%;
}

.class-roster__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px 12px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%);
}

.class-roster__head h2 {
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.class-roster__count {
  font-size: 0.72rem;
  font-weight: 800;
  background: var(--text);
  color: #fff;
  padding: 3px 10px;
  border-radius: 20px;
  min-width: 28px;
  text-align: center;
}

.class-roster__body { padding: 14px 16px 16px; }

.class-roster__textarea {
  width: 100%;
  min-height: 220px;
  font-size: 15px;
  line-height: 1.6;
  padding: 14px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-inset);
  color: var(--text);
  resize: vertical;
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.class-roster__textarea::placeholder { color: var(--muted); opacity: 0.75; }

.class-roster__textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
  background: var(--surface);
}

.class-roster__input.is-collapsed { display: none; }

.class-roster__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.rsp-btn-primary {
  flex: 1;
  min-width: 140px;
  padding: 11px 18px;
  border: none;
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  font-weight: 700;
  font-size: 0.86rem;
  cursor: pointer;
  box-shadow: 0 4px 14px var(--primary-glow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.rsp-btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--primary-glow);
}

.rsp-btn-primary:active { transform: scale(0.98); }

.rsp-btn-ghost {
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.8rem;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}

.rsp-btn-ghost:hover {
  background: var(--surface-2);
  border-color: var(--border-strong);
}

.rsp-btn-ghost--danger { color: var(--danger); }
.rsp-btn-ghost--danger:hover { background: #fef2f2; border-color: #fecaca; }

.rsp-btn-secondary {
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--primary);
  font-weight: 700;
  font-size: 0.84rem;
  cursor: pointer;
  transition: background var(--transition);
}

.rsp-btn-secondary:hover { background: var(--primary-soft); }

.class-roster__reopen {
  width: 100%;
  margin: 0 0 12px;
  padding: 10px 14px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.class-roster__reopen:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-soft);
}

.class-roster__summary {
  font-size: 0.8rem;
  color: var(--success);
  font-weight: 700;
  margin: 0 0 12px;
  padding: 8px 12px;
  background: var(--success-soft);
  border-radius: var(--radius-sm);
}

.class-roster__hint {
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
  padding: 20px 12px;
  line-height: 1.5;
}

.rsp-alert {
  font-size: 0.76rem;
  color: #b45309;
  background: var(--warning-soft);
  border: 1px solid #fde68a;
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin: 0 0 12px;
  line-height: 1.45;
}

.class-roster__search {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin-bottom: 10px;
  background: var(--surface-2);
  transition: border-color var(--transition);
}

.class-roster__search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.class-roster__search svg { color: var(--muted); flex-shrink: 0; }

.class-roster__search input {
  border: none;
  background: none;
  width: 100%;
  font-size: 0.86rem;
  color: var(--text);
  outline: none;
  font-family: inherit;
}

.class-roster__list {
  list-style: none;
  max-height: 360px;
  overflow-y: auto;
  margin: 0 -4px;
  padding: 0 4px;
  scrollbar-width: thin;
}

.class-roster__row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  margin-bottom: 4px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  border: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition);
}

.class-roster__row:hover { background: var(--surface-2); }

.class-roster__row.is-absent { opacity: 0.55; }
.class-roster__row.is-called {
  background: var(--success-soft);
  border-color: rgba(16, 185, 129, 0.2);
}

.class-roster__av {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary) 0%, #3b82f6 100%);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 2px 8px var(--primary-glow);
}

.class-roster__info { flex: 1; min-width: 0; }

.class-roster__name {
  font-weight: 700;
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text);
}

.class-roster__meta {
  font-size: 0.68rem;
  color: var(--muted);
  margin-top: 1px;
}

.class-roster__status {
  font-size: 0.62rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 6px;
  flex-shrink: 0;
}

.class-roster__status--active {
  background: var(--success-soft);
  color: var(--success);
}

.class-roster__status--absent {
  background: var(--warning-soft);
  color: #b45309;
}

.class-roster__status--called {
  background: var(--primary-soft);
  color: var(--primary);
}

.class-roster__toggle-absent {
  width: 30px;
  height: 30px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  font-size: 0.6rem;
  font-weight: 800;
  color: var(--muted);
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--transition);
}

.class-roster__toggle-absent:hover { border-color: var(--warning); color: var(--warning); }

.class-roster__toggle-absent.is-on {
  background: var(--warning-soft);
  border-color: var(--warning);
  color: #b45309;
}

/* ── Arena shell (center hero) ── */
.rsp-arena__shell {
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-arena);
  padding: 20px 22px 22px;
  position: relative;
  overflow: hidden;
  max-width: 100%;
}

.rsp-arena__shell::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--primary), var(--accent));
  opacity: 0.85;
}

.rsp-arena__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  gap: 12px;
}

.rsp-arena__title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.rsp-arena__icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary-soft) 0%, var(--accent-soft) 100%);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

.rsp-arena__title {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.rsp-arena__badge {
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--muted);
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 5px 10px;
  border-radius: 20px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

/* Stats strip */
.rsp-status-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.rsp-stat {
  flex: 1;
  min-width: 72px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1px solid var(--border);
  text-align: center;
  transition: transform var(--transition);
}

.rsp-stat:hover { transform: translateY(-1px); }

.rsp-stat__val {
  display: block;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text);
}

.rsp-stat__lbl {
  display: block;
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-top: 3px;
}

.rsp-stat--active .rsp-stat__val { color: var(--success); }
.rsp-stat--called .rsp-stat__val { color: var(--primary); }
.rsp-stat--left .rsp-stat__val { color: var(--accent); }
.rsp-stat--round .rsp-stat__val { color: var(--text-secondary); }

/* Spotlight stage */
.rsp-arena__spotlight {
  min-height: 260px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background:
    radial-gradient(ellipse 70% 55% at 50% 35%, rgba(37, 99, 235, 0.09), transparent 65%),
    radial-gradient(ellipse 50% 40% at 50% 80%, rgba(249, 115, 22, 0.05), transparent 60%),
    linear-gradient(180deg, var(--surface-2) 0%, var(--surface-inset) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px 20px;
  margin-bottom: 14px;
  position: relative;
  overflow: hidden;
}

.rsp-orbit {
  position: absolute;
  inset: 0;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.rsp-orbit__ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(37, 99, 235, 0.12);
}

.rsp-orbit__ring--1 {
  width: 180px;
  height: 180px;
  animation: orbitPulse 4s ease-in-out infinite;
}

.rsp-orbit__ring--2 {
  width: 260px;
  height: 260px;
  border-color: rgba(249, 115, 22, 0.08);
  animation: orbitPulse 4s ease-in-out infinite 0.5s;
}

@keyframes orbitPulse {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.03); }
}

.rsp-arena__stage {
  width: 100%;
  text-align: center;
  position: relative;
  z-index: 1;
}

.rsp-confetti-host {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 2;
}

/* Stage states */
.rsp-stage-empty {
  max-width: 340px;
  margin: 0 auto;
}

.rsp-stage-empty__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 14px;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  box-shadow: var(--shadow-sm);
}

.rsp-stage-empty p,
.rsp-stage-ready p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.55;
  font-weight: 500;
}

.rsp-stage-ready h3 {
  font-size: clamp(1.2rem, 3vw, 1.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 6px;
  color: var(--text);
}

.rsp-stage-ready__pulse {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  margin-right: 6px;
  animation: readyPulse 1.5s ease-in-out infinite;
  vertical-align: middle;
}

@keyframes readyPulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
}

.rsp-stage-error p {
  color: var(--danger);
  font-weight: 600;
  margin-bottom: 12px;
}

/* Shuffle reel */
.rsp-shuffle {
  padding: 10px 0;
}

.rsp-shuffle__reel {
  display: inline-block;
  padding: 16px 32px;
  background: var(--surface);
  border: 2px solid var(--primary);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px var(--primary-glow);
  margin-bottom: 12px;
  min-width: 200px;
}

.rsp-shuffle__name {
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--primary);
  display: block;
  animation: shuffleGlow 0.3s ease-in-out infinite alternate;
}

@keyframes shuffleGlow {
  from { opacity: 0.85; }
  to { opacity: 1; }
}

.rsp-shuffle__label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Winner reveal */
.rsp-winner {
  animation: winnerReveal 0.5s var(--ease-out) both;
}

@keyframes winnerReveal {
  from { opacity: 0; transform: scale(0.92) translateY(12px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.rsp-winner__badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 800;
  padding: 5px 14px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--accent-soft), var(--primary-soft));
  color: var(--accent-dark);
  border: 1px solid rgba(249, 115, 22, 0.25);
  margin-bottom: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.rsp-winner__tag {
  font-size: 0.95rem;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.rsp-winner-spotlight {
  position: relative;
  display: inline-block;
}

.rsp-winner-spotlight::before {
  content: '';
  position: absolute;
  inset: -30px -40px;
  background: radial-gradient(ellipse at center, rgba(249, 115, 22, 0.15), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.rsp-winner-card {
  position: relative;
  z-index: 1;
  display: inline-block;
  padding: 24px 36px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.rsp-winner-card--hero {
  padding: 28px 44px 32px;
  border: 2px solid transparent;
  background:
    linear-gradient(var(--surface), var(--surface)) padding-box,
    linear-gradient(135deg, var(--accent), var(--primary)) border-box;
}

.rsp-winner-card__av {
  width: 72px;
  height: 72px;
  margin: 0 auto 14px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
  color: #fff;
  font-size: 1.1rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px var(--accent-glow);
  position: relative;
}

.rsp-winner-card__av--lg {
  width: 88px;
  height: 88px;
  font-size: 1.35rem;
  border-radius: 22px;
}

.rsp-winner-card__av::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: inherit;
  border: 2px solid rgba(255, 255, 255, 0.35);
  pointer-events: none;
}

.rsp-winner-card__name {
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
  line-height: 1.1;
}

.rsp-winner__sub {
  font-size: 0.74rem;
  color: var(--muted);
  margin-top: 14px;
  font-weight: 500;
}

.rsp-winner--group .rsp-winner__group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin: 12px 0;
}

.rsp-winner--group .rsp-winner-card {
  padding: 14px 20px;
}

.rsp-winner--group .rsp-winner-card__av {
  width: 48px;
  height: 48px;
  font-size: 0.85rem;
  margin-bottom: 8px;
}

.rsp-arena__meta {
  text-align: center;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

/* ── CTA ── */
.call-button {
  width: 100%;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border: none;
  border-radius: var(--radius);
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #fb923c 0%, #f97316 35%, #2563eb 100%);
  box-shadow: var(--shadow-cta);
  transition: transform 0.15s var(--ease-out), box-shadow 0.15s var(--ease-out);
  font-family: inherit;
}

.call-button::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.2) 0%, transparent 50%);
  pointer-events: none;
}

.call-button svg { position: relative; z-index: 1; }

.call-button span { position: relative; z-index: 1; }

.call-button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 18px 44px rgba(249, 115, 22, 0.4), 0 6px 16px rgba(37, 99, 235, 0.2);
}

.call-button:active:not(:disabled) {
  transform: translateY(0) scale(0.98);
}

.call-button.is-loading {
  pointer-events: none;
  opacity: 0.85;
}

.call-button:disabled {
  background: linear-gradient(180deg, #e8edf3 0%, #dce3ec 100%);
  color: #8b99a8;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6), 0 2px 6px rgba(16, 35, 60, 0.04);
  cursor: not-allowed;
  border: 1px solid var(--border);
}

.call-button:disabled::before { display: none; }

.call-button-hint {
  text-align: center;
  font-size: 0.74rem;
  color: var(--muted);
  font-weight: 500;
  min-height: 1.3em;
  margin-top: 8px;
}

/* ── Mode selector ── */
.mode-toolbar { margin-bottom: 6px; }

.mode-segment {
  display: flex;
  flex-wrap: wrap;
  padding: 4px;
  background: var(--surface-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  gap: 3px;
  margin-bottom: 12px;
  max-width: 100%;
}

.mode-pill {
  flex: 1 1 auto;
  min-width: 0;
  padding: 8px 14px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  white-space: nowrap;
}

.mode-pill:hover:not(.is-active) {
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.5);
}

.mode-pill.is-active {
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

body.dark-mode .mode-pill.is-active {
  background: var(--surface-elevated);
}

.options-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  align-items: center;
  padding: 10px 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.74rem;
  max-width: 100%;
}

.opt-stepper {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--text-secondary);
}

.opt-stepper button {
  width: 28px;
  height: 28px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  color: var(--text);
  transition: background var(--transition);
}

.opt-stepper button:hover { background: var(--primary-soft); color: var(--primary); }

.opt-stepper em {
  font-style: normal;
  font-weight: 800;
  color: var(--text);
  min-width: 20px;
  text-align: center;
  font-size: 0.9rem;
}

.opt-toggle-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-left: auto;
}

.opt-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition), transform 0.12s var(--ease-out);
  font-family: inherit;
  white-space: nowrap;
}

.opt-toggle:hover:not(.is-on) {
  border-color: var(--border-strong);
  color: var(--text-secondary);
  background: var(--surface-2);
}

.opt-toggle:active {
  transform: scale(0.97);
}

.opt-toggle__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border-strong);
  flex-shrink: 0;
  transition: background var(--transition), box-shadow var(--transition);
}

.opt-toggle.is-on {
  background: linear-gradient(135deg, var(--primary-soft) 0%, rgba(255, 255, 255, 0.9) 100%);
  border-color: rgba(37, 99, 235, 0.35);
  color: var(--primary-dark);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.12);
}

.opt-toggle.is-on .opt-toggle__dot {
  background: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
}

body.dark-mode .opt-toggle.is-on {
  background: linear-gradient(135deg, rgba(30, 58, 95, 0.85) 0%, rgba(26, 34, 48, 0.95) 100%);
  color: #93c5fd;
  border-color: rgba(59, 130, 246, 0.35);
}

body.dark-mode .opt-toggle.is-on .opt-toggle__dot {
  background: #60a5fa;
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
}

.opt-toggle--sound {
  gap: 5px;
}

.opt-toggle--sound .opt-toggle__icon {
  display: inline-flex;
  width: 16px;
  height: 16px;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.opt-toggle--sound .opt-toggle__icon svg {
  width: 15px;
  height: 15px;
}

.opt-toggle--sound.is-muted {
  color: var(--muted);
}

/* ── History rail ── */
.rsp-history-rail {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.rsp-history-rail__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%);
}

.rsp-history-rail__head > span {
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.rsp-history-rail__tools { display: flex; gap: 4px; }

.rsp-tool-btn {
  width: 30px;
  height: 30px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  transition: all var(--transition);
}

.rsp-tool-btn:hover:not(:disabled) {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-soft);
}

.rsp-tool-btn:disabled { opacity: 0.35; cursor: not-allowed; }

.rsp-history-rail__body { padding: 12px 16px 16px; }

.rsp-history-empty {
  text-align: center;
  padding: 28px 16px;
}

.rsp-history-empty__icon {
  width: 44px;
  height: 44px;
  margin: 0 auto 10px;
  border-radius: 12px;
  background: var(--surface-2);
  border: 1px dashed var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 1.1rem;
}

.rsp-history-empty p {
  font-size: 0.78rem;
  color: var(--muted);
  font-weight: 500;
}

.rsp-history-list {
  list-style: none;
  max-height: 320px;
  overflow-y: auto;
  position: relative;
  padding-left: 8px;
}

.rsp-history-list::before {
  content: '';
  position: absolute;
  left: 18px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--border));
  border-radius: 1px;
  opacity: 0.4;
}

.rsp-history-item {
  display: flex;
  gap: 12px;
  padding: 8px 0 8px 4px;
  position: relative;
  animation: historySlide 0.35s var(--ease-out) both;
}

@keyframes historySlide {
  from { opacity: 0; transform: translateX(-8px); }
  to { opacity: 1; transform: translateX(0); }
}

.rsp-history-item__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid var(--surface);
  box-shadow: 0 0 0 2px var(--primary-soft);
  flex-shrink: 0;
  margin-top: 6px;
  margin-left: 6px;
  z-index: 1;
}

.rsp-history-item__num {
  font-size: 0.62rem;
  font-weight: 800;
  color: var(--muted);
  min-width: 18px;
  margin-top: 4px;
}

.rsp-history-item__body { flex: 1; min-width: 0; }

.rsp-history-item__names {
  font-weight: 700;
  font-size: 0.82rem;
  display: block;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rsp-history-item__meta {
  font-size: 0.68rem;
  color: var(--muted);
  margin-top: 2px;
  font-weight: 500;
}

/* ── Sponsor ── */
.rsp-sponsor-rail {
  padding: 16px 18px;
  text-align: center;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.6) 0%, rgba(248, 250, 252, 0.9) 100%);
  backdrop-filter: blur(8px);
}

body.dark-mode .rsp-sponsor-rail {
  background: linear-gradient(135deg, rgba(26, 34, 48, 0.8) 0%, rgba(21, 27, 38, 0.9) 100%);
}

.rsp-sponsor-rail__tag {
  display: inline-block;
  font-size: 0.58rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 6px;
}

.rsp-sponsor-rail p {
  font-size: 0.72rem;
  color: var(--muted);
  line-height: 1.45;
  font-weight: 500;
}

/* ── Footer & toast ── */
.rsp-footer {
  padding: 14px;
  text-align: center;
  font-size: 0.7rem;
  color: var(--muted);
}

.rsp-footer a { color: var(--muted); text-decoration: none; }
.rsp-footer a:hover { color: var(--primary); }

.rsp-toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: var(--text);
  color: #fff;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s var(--ease-out);
  z-index: 9999;
  box-shadow: var(--shadow-lg);
}

.rsp-toast.is-show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.rsp-confetti {
  position: absolute;
  top: -6px;
  border-radius: 2px;
  animation: confettiFall 2.5s ease-in forwards;
}

@keyframes confettiFall {
  to { transform: translateY(240px) rotate(480deg); opacity: 0; }
}

/* ── Participants panel (arena v2) ── */
.class-roster--arena .class-roster__head {
  gap: 10px;
}

.class-roster__round {
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 10px;
  border-radius: 20px;
}

.participants-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding: 12px 16px 0;
}

.participants-summary__item {
  text-align: center;
  padding: 10px 8px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1px solid var(--border);
}

.participants-summary__val {
  display: block;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.participants-summary__lbl {
  display: block;
  font-size: 0.58rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-top: 2px;
}

.participants-summary__item--ready .participants-summary__val { color: var(--success); }
.participants-summary__item--called .participants-summary__val { color: var(--primary); }

.participants-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  padding: 10px 16px 0;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--muted);
}

.participants-legend .dot { font-style: normal; margin-right: 4px; }

.participants-row__dot {
  width: 18px;
  text-align: center;
  flex-shrink: 0;
  font-size: 0.75rem;
}

.participants-row--current {
  background: linear-gradient(90deg, rgba(249, 115, 22, 0.12), transparent);
  border-color: rgba(249, 115, 22, 0.25);
}

.participants-row--called { opacity: 0.72; }

.participants-row__label {
  font-size: 0.58rem;
  font-weight: 700;
  color: var(--muted);
  flex-shrink: 0;
}

.class-roster__parse-hint {
  margin-top: 8px;
  font-size: 0.76rem;
  font-weight: 600;
}

.parse-hint__ok { color: var(--success); }
.parse-hint__idle { color: var(--muted); }

.rsp-btn-start {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.rsp-btn-start:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none !important;
}

.rsp-btn-accent {
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-dark) 100%) !important;
  box-shadow: 0 4px 14px var(--accent-glow) !important;
}

/* ── Arena glass & space prompt ── */
.rsp-arena__shell--glass {
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.82);
}

body.dark-mode .rsp-arena__shell--glass {
  background: rgba(21, 27, 38, 0.88);
}

.rsp-arena__spotlight.is-paused {
  filter: grayscale(0.3) brightness(0.92);
}

.rsp-space-prompt {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  animation: spacePulse 2s ease-in-out infinite;
}

.rsp-space-prompt__key {
  font-size: clamp(2rem, 6vw, 3.2rem);
  font-weight: 900;
  letter-spacing: 0.08em;
  padding: 12px 28px;
  border-radius: var(--radius);
  border: 2px solid var(--border-strong);
  background: var(--surface);
  box-shadow: var(--shadow-md);
  color: var(--text);
}

.rsp-space-prompt__text {
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

@keyframes spacePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}

.rsp-stage-ready__sub {
  margin-top: 14px;
  font-size: 0.82rem;
  color: var(--muted);
}

.rsp-stage-paused__icon {
  font-size: 2.5rem;
  margin-bottom: 8px;
}

.rsp-stage-paused h3 {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.rsp-stage-paused kbd {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  font-size: 0.78rem;
}

.rsp-kbd-hints {
  margin-top: 12px;
  text-align: center;
  font-size: 0.65rem;
  color: var(--muted);
  font-weight: 600;
  flex-wrap: wrap;
  line-height: 1.6;
}

.rsp-kbd-hints kbd {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  font-size: 0.62rem;
  margin: 0 1px;
}

/* ── Winner hero card ── */
.rsp-winner-card--glow {
  animation: winnerGlow 1.2s ease-out;
  border: 2px solid transparent;
  background:
    linear-gradient(var(--surface), var(--surface)) padding-box,
    linear-gradient(135deg, var(--accent), var(--primary), var(--accent)) border-box;
  box-shadow: 0 0 40px var(--accent-glow), var(--shadow-lg);
  padding: 28px 32px;
  border-radius: var(--radius-lg);
}

@keyframes winnerGlow {
  0% { transform: scale(0.85); opacity: 0; }
  60% { transform: scale(1.03); }
  100% { transform: scale(1); opacity: 1; }
}

.rsp-winner-card__code {
  font-size: 1.1rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 8px;
}

.rsp-winner-card__code--lg {
  font-size: clamp(1.5rem, 4vw, 2rem);
}

.rsp-winner-card__name--lg {
  font-size: clamp(1.4rem, 4vw, 2.2rem) !important;
  font-weight: 800 !important;
  letter-spacing: -0.02em;
}

.rsp-winner-card__sub {
  margin-top: 8px;
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 600;
}

.rsp-winner--hero .rsp-winner__badge {
  margin-top: 14px;
}

/* ── Modals ── */
.rsp-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(16, 35, 60, 0.45);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  padding: 20px;
  animation: modalFade 0.25s var(--ease-out);
}

@keyframes modalFade {
  from { opacity: 0; }
  to { opacity: 1; }
}

.rsp-modal {
  width: min(420px, 100%);
  padding: 28px 26px;
  border-radius: var(--radius-xl);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  text-align: center;
  animation: modalSlide 0.3s var(--ease-out);
}

.rsp-modal--glass {
  backdrop-filter: blur(16px);
  background: rgba(255, 255, 255, 0.92);
}

body.dark-mode .rsp-modal--glass {
  background: rgba(26, 34, 48, 0.95);
}

.rsp-modal--celebrate {
  border-top: 3px solid var(--accent);
}

@keyframes modalSlide {
  from { opacity: 0; transform: translateY(16px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.rsp-modal__emoji {
  font-size: 2.5rem;
  margin-bottom: 8px;
}

.rsp-modal__title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.rsp-modal__body {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.5;
  margin-bottom: 20px;
}

.rsp-modal__stat {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

.rsp-modal__actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rsp-modal__actions .rsp-btn-primary,
.rsp-modal__actions .rsp-btn-ghost {
  width: 100%;
}

/* ── Responsive ── */
@media (max-width: 1200px) {
  .random-tool-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
    gap: 16px;
  }

  .rsp-side--right {
    grid-column: 1 / -1;
  }
}

@media (max-width: 1100px) {
  .random-tool-layout { grid-template-columns: 1fr; }
  .rsp-side--left,
  .rsp-side--right { position: static; }
  .rsp-arena__spotlight { min-height: 220px; }
}

@media (max-width: 640px) {
  .rsp-app { padding: 10px 14px 20px; }
  .rsp-page-head {
    padding: 14px 16px;
    flex-direction: column;
    align-items: flex-start;
  }
  .rsp-page-head__badge { align-self: flex-start; }
  .class-roster__textarea { min-height: 180px; }
  .rsp-stat { min-width: 0; flex: 1 1 45%; padding: 8px 8px; }
  .rsp-stat__val { font-size: 1.15rem; }
  .call-button { min-height: 60px; font-size: 1.05rem; }
  .rsp-mascot-grid { gap: 8px 6px; }
  .rsp-mascot-slot__name { font-size: 0.7rem; }
}

/* ═══════════════════════════════════════════
   Seasonal mascot arena (quiz-aligned) v17
   ═══════════════════════════════════════════ */

body.rsp-theme-dark {
  --bg: var(--qm-background, #0b1f17);
  --surface: color-mix(in srgb, var(--qm-card, #143028) 92%, #000);
  --surface-elevated: var(--qm-card, #143028);
  --text: var(--qm-text, #f1f8e9);
  --text-secondary: color-mix(in srgb, var(--qm-text, #f1f8e9) 78%, transparent);
  --muted: color-mix(in srgb, var(--qm-text, #f1f8e9) 55%, transparent);
  --primary: var(--qm-cta, #e53935);
  --accent: var(--qm-secondary, #ff5252);
  --border: color-mix(in srgb, var(--qm-text, #fff) 14%, transparent);
  --bg-mesh: var(--qz-stage-mesh, none);
}

body.rsp-theme-light {
  --bg: var(--qm-background, #f8fafc);
  --surface: var(--qm-card, #fff);
  --text: var(--qm-text, #0f172a);
  --primary: var(--qm-cta, #2563eb);
  --accent: var(--qm-secondary, #f59e0b);
  --bg-mesh: var(--qz-stage-mesh, none);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.rsp-arena__shell--seasonal {
  position: relative;
  overflow: hidden;
  background:
    var(--qz-stage-mesh, none),
    linear-gradient(165deg, color-mix(in srgb, var(--qm-card, #143028) 88%, #000) 0%, var(--qm-background, #0b1f17) 100%);
  color: var(--qm-text, var(--text));
  border: 1px solid color-mix(in srgb, var(--qm-primary, #fff) 18%, transparent);
}

.rsp-arena-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.9;
}

.qz-arena-bg__fx {
  position: absolute;
  inset: 0;
  background: var(--qz-stage-mesh);
  opacity: 0.85;
}

html[data-qz-ambient="snow"] .qz-arena-bg__fx::after,
body[data-qz-backdrop="christmas"] .qz-arena-bg__fx::after,
body[data-qz-backdrop="snow-village"] .qz-arena-bg__fx::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(2px 2px at 10% 20%, #fff 50%, transparent 51%),
    radial-gradient(2px 2px at 30% 60%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 70% 30%, #fff 50%, transparent 51%),
    radial-gradient(2px 2px at 85% 75%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 50% 45%, #fff 50%, transparent 51%);
  opacity: 0.45;
  animation: rsp-snow-drift 12s linear infinite;
}

@keyframes rsp-snow-drift {
  from { transform: translateY(0); }
  to { transform: translateY(24px); }
}

.rsp-arena__shell--seasonal > *:not(.rsp-arena-bg) {
  position: relative;
  z-index: 1;
}

.rsp-arena__header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.rsp-theme-select select {
  appearance: none;
  border: 1px solid color-mix(in srgb, var(--qm-text, #fff) 22%, transparent);
  background: color-mix(in srgb, var(--qm-card, #143028) 70%, transparent);
  color: var(--qm-text, var(--text));
  border-radius: 999px;
  padding: 6px 28px 6px 12px;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%99a' stroke-width='2.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}

.rsp-arena__spotlight {
  position: relative;
  isolation: isolate;
  min-height: 280px;
  background: color-mix(in srgb, #000 28%, transparent);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.rsp-spotlight-beam {
  --spot-x: 50%;
  --spot-y: 30%;
  --spot-w: 120px;
  position: absolute;
  inset: 0;
  left: 0;
  top: 0;
  width: auto;
  height: auto;
  transform: none;
  opacity: 0;
  pointer-events: none;
  z-index: 2;
  background: none;
  filter: none;
  clip-path: none;
  transition: opacity 220ms ease;
}

.rsp-spotlight-beam.is-on {
  opacity: 0.92;
}

.rsp-spotlight-beam.is-winner-beam {
  opacity: 1;
  filter: blur(8px) saturate(1.2);
  box-shadow: 0 0 40px color-mix(in srgb, var(--qm-cta, #ff8a1f) 45%, transparent);
}

.rsp-mascot-cast {
  position: relative;
  z-index: 3;
  padding: 16px 12px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  min-height: 240px;
}

.rsp-mascot-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-end;
  gap: 14px 12px;
  width: 100%;
  max-width: 720px;
}

.rsp-mascot-slot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  width: calc(var(--mascot-size, 84px) + 12px);
  transition: filter 220ms ease, opacity 220ms ease, transform 320ms cubic-bezier(0.2, 0.9, 0.2, 1);
  animation: rsp-slot-enter 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
  animation-delay: calc(var(--slot-i, 0) * 40ms);
}

@keyframes rsp-slot-enter {
  from { opacity: 0; transform: translateY(16px) scale(0.86); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.rsp-mascot-slot__figure {
  display: grid;
  place-items: center;
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.35));
}

.rsp-mascot-slot__name {
  font-family: Fredoka, 'DM Sans', sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  text-align: center;
  line-height: 1.2;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: color-mix(in srgb, var(--qm-text, #fff) 88%, transparent);
}

.rsp-mascot-slot.is-dimmed {
  opacity: 0.28;
  filter: brightness(0.55) saturate(0.7);
  transform: scale(0.92);
}

.rsp-mascot-slot.is-spotlight {
  opacity: 1;
  filter: brightness(1.12) saturate(1.15);
  transform: scale(1.08) translateY(-6px);
  z-index: 4;
}

.rsp-mascot-slot.is-winner {
  opacity: 1;
  filter: brightness(1.15) saturate(1.2);
  transform: scale(1.12) translateY(-10px);
  z-index: 5;
}

.rsp-mascot-slot.is-winner .rsp-mascot-slot__name {
  color: var(--qm-cta, #ffd54f);
  font-weight: 700;
  text-shadow: 0 0 18px color-mix(in srgb, var(--qm-cta, #ffd54f) 50%, transparent);
}

.rsp-mascot-slot.is-called:not(.is-winner):not(.is-spotlight) {
  opacity: 0.45;
}

.rsp-mascot-cast.is-ready .rsp-space-prompt--overlay {
  position: absolute;
  top: 10px;
  z-index: 5;
  pointer-events: none;
  opacity: 0.85;
}

.rsp-mascot-cast.is-scanning .rsp-shuffle__label {
  margin: 0;
  font-family: Fredoka, sans-serif;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--qm-text, #fff) 75%, transparent);
}

.rsp-empty-mascots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 12px;
}

.rsp-empty-mascot {
  animation: rsp-slot-enter 0.55s cubic-bezier(0.34, 1.56, 0.64, 1) both;
  animation-delay: var(--enter-delay, 0ms);
}

.rsp-winner--mascots {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 20px 12px;
}

.rsp-winner__cast {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
}

.rsp-winner-card--mascot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 8px;
  background: transparent;
  border: none;
  box-shadow: none;
  animation: rsp-slot-enter 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.rsp-winner-card--mascot .rsp-winner-card__name {
  font-family: 'Baloo 2', Fredoka, sans-serif;
  font-size: clamp(1.1rem, 3vw, 1.45rem);
  font-weight: 800;
  text-align: center;
  color: var(--qm-text, #fff);
  text-shadow: 0 0 20px color-mix(in srgb, var(--qm-cta, #ff8a1f) 40%, transparent);
}

.rsp-arena__shell--seasonal .call-button {
  background: linear-gradient(135deg, var(--qm-cta, #e53935), color-mix(in srgb, var(--qm-cta, #e53935) 70%, #000));
  box-shadow: 0 14px 36px color-mix(in srgb, var(--qm-cta, #e53935) 40%, transparent);
}

.rsp-arena__shell--seasonal .call-button:disabled {
  opacity: 0.45;
  filter: grayscale(0.3);
}

.rsp-arena__shell--seasonal .rsp-arena__title {
  font-family: 'Baloo 2', Fredoka, sans-serif;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ═══════════════════════════════════════════
   Spotlight Room / Track — immersive v19
   Mascots stay dark; light does the selecting
   ═══════════════════════════════════════════ */

.rsp-app {
  max-width: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - 60px);
}

.rsp-immersive {
  flex: 1;
  display: flex;
  min-height: 0;
  position: relative;
}

.rsp-arena-col--full {
  flex: 1;
  min-width: 0;
  width: 100%;
}

.rsp-room {
  --room-bg: #06080f;
  position: relative;
  display: grid;
  grid-template-rows: auto minmax(280px, 1fr) auto;
  min-height: calc(100vh - 72px);
  background: var(--room-bg);
  color: #f8fafc;
  overflow: hidden;
  border-radius: 0;
  border: none;
}

.rsp-room__sky {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, color-mix(in srgb, var(--qm-cta, #f59e0b) 18%, transparent), transparent 55%),
    linear-gradient(180deg, #0c1220 0%, #06080f 42%, #04060c 100%);
}

.rsp-room__mesh {
  position: absolute;
  inset: 0;
  background: var(--qz-stage-mesh, none);
  opacity: 0.35;
}

.rsp-room__ceiling {
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 18px;
  background: linear-gradient(180deg, rgba(255,255,255,0.08), transparent);
  border-radius: 0 0 40% 40%;
}

.rsp-room__bar,
.rsp-room__stage-wrap,
.rsp-room__dock {
  position: relative;
  z-index: 2;
}

.rsp-room__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 18px;
  background: linear-gradient(180deg, rgba(0,0,0,0.45), transparent);
}

.rsp-room__brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.rsp-room__brand strong {
  font-family: 'Baloo 2', Fredoka, sans-serif;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.rsp-room__brand span {
  font-size: 0.78rem;
  color: rgba(248,250,252,0.65);
}

.rsp-room__bar-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.rsp-room__chip {
  border: 1px solid color-mix(in srgb, var(--qm-cta, #f59e0b) 55%, transparent);
  background: color-mix(in srgb, var(--qm-cta, #f59e0b) 28%, rgba(0,0,0,0.35));
  color: #fff;
  border-radius: 999px;
  padding: 8px 16px;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}

.rsp-spotlight-beam__cone {
  opacity: 0.95;
  filter: blur(5px);
  background: linear-gradient(
    180deg,
    rgba(255, 255, 245, 0.9) 0%,
    rgba(255, 230, 140, 0.45) 32%,
    rgba(255, 200, 80, 0.12) 62%,
    transparent 100%
  );
}

.rsp-room .rsp-mascot-slot:not(.is-lit):not(.is-winner):not(.is-spotlight) {
  filter: brightness(0.35) contrast(1.08) saturate(0.45);
}


.rsp-room__chip:hover {
  background: rgba(255,255,255,0.16);
}

.rsp-room__stage-wrap {
  position: relative;
  margin: 0 12px;
  border-radius: 20px;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(ellipse 70% 40% at 50% 100%, rgba(255,255,255,0.06), transparent 60%),
    linear-gradient(180deg, rgba(8,12,22,0.2), rgba(0,0,0,0.55));
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.06);
  min-height: 320px;
}

.rsp-room__haze {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(ellipse at 50% 30%, rgba(255,255,255,0.04), transparent 50%);
  mix-blend-mode: soft-light;
}

.rsp-room .rsp-arena__stage {
  position: relative;
  z-index: 3;
  min-height: 300px;
  height: 100%;
  display: grid;
  place-items: end center;
  padding: 24px 16px 28px;
  background: transparent !important;
}

/* Spotlight = the star of the show */
.rsp-room .rsp-spotlight-beam {
  --spot-x: 50%;
  --spot-y: 28%;
  --spot-w: 140px;
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
  opacity: 0;
  transition: opacity 280ms ease;
}

.rsp-room .rsp-spotlight-beam.is-on {
  opacity: 1;
}

.rsp-spotlight-beam__cone {
  position: absolute;
  left: var(--spot-x);
  top: -6%;
  width: var(--spot-w);
  height: 78%;
  transform: translateX(-50%);
  background: linear-gradient(
    180deg,
    rgba(255, 252, 235, 0.75) 0%,
    color-mix(in srgb, var(--qm-cta, #fbbf24) 35%, transparent) 38%,
    transparent 100%
  );
  clip-path: polygon(38% 0, 62% 0, 100% 100%, 0 100%);
  filter: blur(8px);
  transition: left 110ms linear, width 160ms ease;
}

.rsp-spotlight-beam__pool {
  position: absolute;
  left: var(--spot-x);
  top: var(--spot-y);
  width: calc(var(--spot-w) * 1.15);
  height: calc(var(--spot-w) * 1.35);
  transform: translate(-50%, -10%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,250,230,0.55) 0%, rgba(255,220,120,0.18) 42%, transparent 70%);
  filter: blur(6px);
  transition: left 110ms linear, top 110ms linear, width 160ms ease;
  box-shadow: 0 0 60px 10px color-mix(in srgb, var(--qm-cta, #fbbf24) 30%, transparent);
}

.rsp-spotlight-beam.is-winner-beam .rsp-spotlight-beam__cone {
  filter: blur(6px) saturate(1.2);
  opacity: 1;
}

.rsp-spotlight-beam.is-winner-beam .rsp-spotlight-beam__pool {
  background: radial-gradient(circle, rgba(255,255,255,0.7) 0%, color-mix(in srgb, var(--qm-cta, #fbbf24) 40%, transparent) 45%, transparent 72%);
}

/* Race track / stage floor */
.rsp-track {
  position: relative;
  width: 100%;
  max-width: 920px;
  margin: 0 auto;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  gap: 0;
}

.rsp-track__floor {
  position: absolute;
  left: 4%;
  right: 4%;
  bottom: 8%;
  height: 42%;
  border-radius: 50% / 28%;
  background:
    radial-gradient(ellipse at 50% 30%, rgba(255,255,255,0.07), transparent 55%),
    linear-gradient(180deg, #1a2233 0%, #0d121c 100%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.08),
    0 20px 40px rgba(0,0,0,0.5);
  transform: perspective(500px) rotateX(52deg);
  transform-origin: center bottom;
  z-index: 0;
}

.rsp-track__lane {
  position: absolute;
  inset: 18% 8% 22%;
  border: 2px dashed rgba(255,255,255,0.14);
  border-radius: 50% / 40%;
}

.rsp-track__marks {
  position: absolute;
  inset: 30% 12% 28%;
  background: repeating-linear-gradient(
    90deg,
    transparent 0 28px,
    rgba(255,255,255,0.08) 28px 30px
  );
  border-radius: 40%;
  opacity: 0.5;
}

.rsp-track__cast {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: flex-end;
  gap: clamp(6px, 1.8vw, 18px);
  width: 100%;
  padding: 0 8px 4px;
  overflow-x: auto;
}

/* Silhouettes until lit by spotlight */
.rsp-room .rsp-mascot-slot {
  position: relative;
  width: calc(var(--mascot-size, 80px) + 8px);
  opacity: 1;
  filter: brightness(0.18) saturate(0.35);
  transform: scale(0.92) translateY(4px);
  transition:
    filter 160ms ease,
    transform 220ms cubic-bezier(0.2, 0.9, 0.2, 1),
    opacity 160ms ease;
}

.rsp-room .rsp-mascot-slot__name {
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 180ms ease, transform 180ms ease, color 180ms ease;
  color: #fff;
  text-shadow: 0 2px 10px rgba(0,0,0,0.8);
  font-size: 0.72rem;
}

.rsp-room .rsp-mascot-slot__pad {
  width: 70%;
  height: 8px;
  margin-top: -4px;
  border-radius: 50%;
  background: rgba(0,0,0,0.45);
  filter: blur(2px);
}

.rsp-room .rsp-mascot-slot.is-lit,
.rsp-room .rsp-mascot-slot.is-spotlight {
  filter: brightness(1.12) saturate(1.15) drop-shadow(0 0 18px rgba(255,230,150,0.45));
  transform: scale(1.12) translateY(-10px);
  z-index: 5;
}

.rsp-room .rsp-mascot-slot.is-lit .rsp-mascot-slot__name,
.rsp-room .rsp-mascot-slot.is-spotlight .rsp-mascot-slot__name,
.rsp-room .rsp-mascot-slot.is-winner .rsp-mascot-slot__name {
  opacity: 1;
  transform: translateY(0);
}

.rsp-room .rsp-mascot-slot.is-winner {
  filter: brightness(1.2) saturate(1.25) drop-shadow(0 0 28px color-mix(in srgb, var(--qm-cta, #fbbf24) 55%, transparent));
  transform: scale(1.18) translateY(-14px);
  z-index: 6;
}

.rsp-room .rsp-mascot-slot.is-called:not(.is-winner):not(.is-lit) {
  filter: brightness(0.1) saturate(0.2);
  opacity: 0.55;
}

.rsp-track__callout {
  position: relative;
  z-index: 4;
  margin-top: 10px;
  text-align: center;
  animation: rsp-slot-enter 0.45s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.rsp-track__callout-label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--qm-cta, #fbbf24) 80%, #fff);
  font-weight: 700;
}

.rsp-track__callout-name {
  display: block;
  font-family: 'Baloo 2', Fredoka, sans-serif;
  font-size: clamp(1.35rem, 4vw, 2rem);
  font-weight: 800;
  color: #fff;
  text-shadow: 0 0 24px color-mix(in srgb, var(--qm-cta, #fbbf24) 50%, transparent);
}

.rsp-room-empty {
  display: grid;
  place-items: center;
  gap: 16px;
  min-height: 260px;
  width: 100%;
  color: rgba(255,255,255,0.7);
  text-align: center;
  padding: 24px;
}

.rsp-room-empty__hint {
  max-width: 320px;
  font-size: 0.95rem;
  line-height: 1.45;
}

.rsp-track--demo {
  width: min(520px, 90%);
  min-height: 120px;
  opacity: 0.55;
}

.rsp-room__dock {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px 14px;
  padding: 12px 16px 18px;
  background: linear-gradient(0deg, rgba(0,0,0,0.72), rgba(0,0,0,0.28));
}

.rsp-room-stats {
  display: flex;
  gap: 14px;
  font-size: 0.8rem;
  color: rgba(248,250,252,0.7);
}

.rsp-room-stats b {
  color: #fff;
  font-weight: 700;
}

.rsp-room .mode-toolbar--dock {
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0;
  gap: 8px;
}

.rsp-room .mode-pill {
  min-width: 36px;
  padding: 6px 10px;
  font-size: 0.75rem;
}

.rsp-room .call-button {
  min-width: min(280px, 70vw);
  min-height: 52px;
  margin: 0;
  background: linear-gradient(135deg, var(--qm-cta, #f59e0b), color-mix(in srgb, var(--qm-cta, #f59e0b) 65%, #7c2d12));
  box-shadow: 0 12px 28px color-mix(in srgb, var(--qm-cta, #f59e0b) 40%, transparent);
}

.rsp-room .call-button-hint {
  width: 100%;
  text-align: center;
  margin: 0;
  color: rgba(255,255,255,0.5);
  font-size: 0.75rem;
}

.rsp-room .rsp-space-prompt--overlay {
  top: 12px;
  opacity: 0.55;
}

/* Roster drawer */
.rsp-roster-host {
  position: fixed;
  inset: 0;
  z-index: 40;
  pointer-events: none;
}

.rsp-drawer {
  position: absolute;
  top: 0;
  right: 0;
  width: min(360px, 92vw);
  height: 100%;
  background: #111827;
  color: #f1f5f9;
  box-shadow: -16px 0 40px rgba(0,0,0,0.45);
  transform: translateX(105%);
  transition: transform 280ms cubic-bezier(0.22, 1, 0.36, 1);
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  border-left: 1px solid rgba(255,255,255,0.08);
}

body.rsp-roster-open .rsp-drawer {
  transform: translateX(0);
}

.rsp-drawer__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.45);
  pointer-events: auto;
}

body.rsp-roster-open .rsp-drawer__backdrop {
  display: block;
}

.rsp-drawer__head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.rsp-drawer__head h2 {
  font-size: 1rem;
  margin: 0;
  flex: 1;
}

.rsp-drawer__count {
  font-size: 0.75rem;
  color: #94a3b8;
}

.rsp-drawer__close {
  border: 0;
  background: transparent;
  color: #cbd5e1;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  padding: 4px 8px;
}

.rsp-drawer__body {
  flex: 1;
  overflow: auto;
  padding: 14px 16px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rsp-drawer .class-roster__textarea {
  min-height: 140px;
  background: #0b1220;
  color: #e2e8f0;
  border-color: #334155;
}

.rsp-drawer .participants-list__item {
  background: #1e293b;
  border-color: #334155;
  color: #e2e8f0;
}

.rsp-footer {
  display: none;
}

.rsp-page-head {
  display: none !important;
}

@media (max-width: 720px) {
  .rsp-room {
    grid-template-rows: auto minmax(240px, 1fr) auto;
  }
  .rsp-room__dock {
    flex-direction: column;
  }
  .rsp-track__cast {
    gap: 4px;
  }
}

/* Track rails + stronger floor */
.rsp-track__rails {
  position: absolute;
  inset: 12% 4% 16%;
  border: 3px solid rgba(255,255,255,0.12);
  border-radius: 50% / 36%;
  box-shadow: inset 0 0 20px rgba(0,0,0,0.35);
}

.rsp-track__floor {
  height: 48%;
  bottom: 4%;
  background:
    radial-gradient(ellipse at 50% 20%, rgba(255,220,140,0.1), transparent 50%),
    repeating-linear-gradient(90deg, #141b28 0 18px, #101722 18px 36px),
    linear-gradient(180deg, #222b3d 0%, #0c1018 100%);
}

.rsp-track__lane {
  border-color: rgba(255, 200, 80, 0.28);
  border-style: solid;
  border-width: 2px;
}

.rsp-track.is-preview .rsp-mascot-slot {
  filter: brightness(0.28) saturate(0.5);
}

.rsp-track__preview-hint {
  position: absolute;
  top: 12px;
  z-index: 3;
  margin: 0;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  text-align: center;
}

/* Always show Danh sách chip */
.rsp-room__bar-right .rsp-room__chip {
  background: color-mix(in srgb, var(--qm-cta, #f59e0b) 25%, rgba(255,255,255,0.1));
  border-color: color-mix(in srgb, var(--qm-cta, #f59e0b) 50%, transparent);
}

/* Silhouettes must be readable in the dark room */
.rsp-room .rsp-mascot-slot {
  filter: brightness(0.42) contrast(1.05) saturate(0.55);
  opacity: 0.85;
}

.rsp-room .rsp-mascot-slot__name {
  opacity: 0.35;
  color: rgba(255,255,255,0.7);
}

.rsp-room .rsp-space-prompt--overlay {
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 14px;
  font-size: 0.7rem;
  background: rgba(0,0,0,0.35);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 999px;
  color: rgba(255,255,255,0.8);
  box-shadow: none;
  z-index: 6;
}

.rsp-room .rsp-space-prompt__key {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  background: transparent;
  color: inherit;
  box-shadow: none;
  padding: 0;
}

.rsp-track__cast {
  min-height: 140px;
  padding-bottom: 18px;
}

.rsp-track__floor {
  z-index: 0;
  opacity: 0.95;
}

/* ═══════════════════════════════════════════
   v24 — All mascots on track + beam shines ON them
   ═══════════════════════════════════════════ */

.rsp-room__stage-wrap {
  min-height: min(58vh, 480px);
}

.rsp-track {
  min-height: min(52vh, 420px);
  justify-content: flex-end;
  padding-bottom: 8px;
}

.rsp-track__scene {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.rsp-track__wall {
  position: absolute;
  inset: 0 0 38% 0;
  background:
    linear-gradient(180deg, rgba(0,0,0,0.15), transparent 40%),
    radial-gradient(ellipse 90% 60% at 50% 100%, rgba(255,255,255,0.04), transparent 60%);
}

.rsp-track__floor {
  position: absolute !important;
  left: 2% !important;
  right: 2% !important;
  bottom: 2% !important;
  height: 46% !important;
  border-radius: 50% / 32% !important;
  transform: perspective(640px) rotateX(58deg) !important;
  transform-origin: center bottom !important;
  background:
    radial-gradient(ellipse at 50% 35%, rgba(255,220,120,0.12), transparent 55%),
    repeating-linear-gradient(90deg, #1a2334 0 22px, #121925 22px 44px) !important;
  box-shadow:
    inset 0 2px 0 rgba(255,255,255,0.1),
    0 24px 48px rgba(0,0,0,0.55) !important;
  opacity: 1 !important;
  z-index: 0;
}

.rsp-track__oval {
  position: absolute;
  inset: 10% 6% 14%;
  border: 3px solid rgba(255, 210, 100, 0.35);
  border-radius: 50% / 42%;
  box-shadow: inset 0 0 24px rgba(0,0,0,0.35);
}

.rsp-track__lane {
  position: absolute !important;
  inset: 22% 12% 26% !important;
  border: 2px dashed rgba(255,255,255,0.22) !important;
  border-radius: 50% / 40% !important;
}

.rsp-track__marks {
  position: absolute !important;
  inset: 34% 16% 34% !important;
  background: repeating-linear-gradient(
    90deg,
    transparent 0 20px,
    rgba(255,255,255,0.14) 20px 22px
  ) !important;
  border-radius: 40%;
  opacity: 0.7;
}

/* Cast sits ON the track */
.rsp-track__cast {
  position: relative !important;
  z-index: 5 !important;
  display: flex !important;
  flex-wrap: nowrap !important;
  justify-content: center !important;
  align-items: flex-end !important;
  gap: clamp(10px, 2.2vw, 28px) !important;
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 12px 28px !important;
  min-height: 160px;
}

/* All mascots visible on the track */
.rsp-room .rsp-mascot-slot {
  position: relative;
  width: calc(var(--mascot-size, 88px) + 10px) !important;
  filter: brightness(0.72) saturate(0.85) !important;
  opacity: 1 !important;
  transform: translateY(0) scale(1) !important;
  transition:
    filter 140ms ease,
    transform 200ms cubic-bezier(0.2, 0.9, 0.2, 1),
    opacity 140ms ease !important;
}

.rsp-room .rsp-mascot-slot__name {
  opacity: 0.55 !important;
  color: rgba(255,255,255,0.85) !important;
  font-size: 0.78rem !important;
  font-weight: 600;
  text-shadow: 0 2px 8px rgba(0,0,0,0.8);
}

.rsp-room .rsp-mascot-slot__pad {
  width: 78%;
  height: 10px;
  margin-top: -2px;
  border-radius: 50%;
  background: rgba(0,0,0,0.5);
  box-shadow: 0 0 12px rgba(255,220,120,0.08);
}

.rsp-room .rsp-mascot-slot.is-dimmed {
  filter: brightness(0.38) saturate(0.5) !important;
  opacity: 0.7 !important;
  transform: scale(0.94) translateY(4px) !important;
}

/* Lit by spotlight beam */
.rsp-room .rsp-mascot-slot.is-lit,
.rsp-room .rsp-mascot-slot.is-spotlight {
  filter: brightness(1.2) saturate(1.2) drop-shadow(0 0 22px rgba(255,230,140,0.65)) !important;
  opacity: 1 !important;
  transform: scale(1.14) translateY(-14px) !important;
  z-index: 8;
}

.rsp-room .rsp-mascot-slot.is-lit .rsp-mascot-slot__name,
.rsp-room .rsp-mascot-slot.is-spotlight .rsp-mascot-slot__name,
.rsp-room .rsp-mascot-slot.is-winner .rsp-mascot-slot__name {
  opacity: 1 !important;
  color: #ffe08a !important;
  transform: none !important;
}

.rsp-room .rsp-mascot-slot.is-winner {
  filter: brightness(1.28) saturate(1.25) drop-shadow(0 0 32px rgba(255,200,80,0.75)) !important;
  transform: scale(1.2) translateY(-18px) !important;
  z-index: 9;
}

.rsp-room .rsp-mascot-slot.is-lit .rsp-mascot-slot__pad,
.rsp-room .rsp-mascot-slot.is-winner .rsp-mascot-slot__pad {
  background: rgba(255, 220, 120, 0.35);
  box-shadow: 0 0 20px rgba(255,210,100,0.45);
}

/* Dramatic spotlight beam from ceiling onto mascot */
.rsp-room .rsp-spotlight-beam {
  --spot-x: 50%;
  --spot-y: 40%;
  --spot-w: 160px;
  --spot-h: 320px;
  z-index: 6 !important;
}

.rsp-room .rsp-spotlight-beam.is-on {
  opacity: 1 !important;
}

.rsp-room .rsp-spotlight-beam__cone {
  position: absolute;
  left: var(--spot-x);
  top: -4%;
  width: var(--spot-w);
  height: var(--spot-h);
  transform: translateX(-50%);
  background: linear-gradient(
    180deg,
    rgba(255, 255, 250, 0.95) 0%,
    rgba(255, 236, 170, 0.55) 28%,
    rgba(255, 200, 80, 0.22) 58%,
    transparent 100%
  ) !important;
  clip-path: polygon(42% 0, 58% 0, 100% 100%, 0 100%) !important;
  filter: blur(4px) !important;
  mix-blend-mode: screen;
  transition: left 90ms linear, width 140ms ease, height 140ms ease !important;
  opacity: 1 !important;
}

.rsp-room .rsp-spotlight-beam__pool {
  position: absolute;
  left: var(--spot-x);
  top: var(--spot-y);
  width: calc(var(--spot-w) * 1.05);
  height: calc(var(--spot-w) * 1.15);
  transform: translate(-50%, -20%);
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(255,255,255,0.75) 0%,
    rgba(255,230,140,0.4) 35%,
    rgba(255,180,60,0.12) 60%,
    transparent 75%
  ) !important;
  filter: blur(3px) !important;
  box-shadow:
    0 0 40px 8px rgba(255, 210, 100, 0.45),
    0 0 80px 20px rgba(255, 180, 60, 0.2) !important;
  transition: left 90ms linear, top 90ms linear, width 140ms ease !important;
  mix-blend-mode: screen;
}

.rsp-room .rsp-spotlight-beam.is-winner-beam .rsp-spotlight-beam__cone {
  filter: blur(3px) saturate(1.25) !important;
}

.rsp-room.is-scanning .rsp-track__floor,
.rsp-track.is-scanning .rsp-track__floor {
  box-shadow:
    inset 0 2px 0 rgba(255,255,255,0.1),
    0 24px 48px rgba(0,0,0,0.55),
    0 0 60px rgba(255,200,80,0.08) !important;
}

.rsp-track__callout {
  z-index: 7;
  margin-top: 4px;
  margin-bottom: 4px;
}

.rsp-track__preview-hint {
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: max-content;
  max-width: 90%;
}

/* ═══════════════════════════════════════════
   v26 — Kill legacy beam-on-container styles
   ═══════════════════════════════════════════ */
.rsp-room .rsp-spotlight-beam {
  inset: 0 !important;
  left: auto !important;
  top: auto !important;
  width: auto !important;
  height: auto !important;
  transform: none !important;
  background: none !important;
  clip-path: none !important;
  filter: none !important;
  box-shadow: none !important;
  opacity: 0;
  pointer-events: none;
  z-index: 6 !important;
}

.rsp-room .rsp-spotlight-beam.is-on {
  opacity: 1 !important;
}

/* Cone from ceiling → mascot */
.rsp-room .rsp-spotlight-beam__cone {
  top: -8% !important;
  height: min(var(--spot-h, 340px), 78%) !important;
  filter: blur(3px) !important;
  mix-blend-mode: screen;
}

.rsp-room .rsp-spotlight-beam__pool {
  mix-blend-mode: screen;
}

/* ═══════════════════════════════════════════
   v28 — Brighter quiz RGB + usable light roster
   Quiz answer palette: red / blue / green
   ═══════════════════════════════════════════ */

.rsp-room {
  --quiz-red: #e21b3c;
  --quiz-blue: #1368ce;
  --quiz-green: #26890c;
  --quiz-yellow: #d89e00;
  --room-bg: #0f2744;
  color: #f8fafc;
}

.rsp-room__sky {
  background:
    radial-gradient(ellipse 70% 45% at 12% 8%, rgba(226, 27, 60, 0.28), transparent 55%),
    radial-gradient(ellipse 65% 42% at 88% 10%, rgba(19, 104, 206, 0.32), transparent 55%),
    radial-gradient(ellipse 80% 50% at 50% 100%, rgba(38, 137, 12, 0.22), transparent 55%),
    linear-gradient(165deg, #1a3a66 0%, #143256 40%, #0f2744 100%) !important;
  opacity: 1;
}

.rsp-room__mesh {
  opacity: 0.55 !important;
}

.rsp-room__ceiling {
  background: linear-gradient(180deg, rgba(255,255,255,0.16), transparent) !important;
}

.rsp-room__bar {
  background: linear-gradient(180deg, rgba(8, 30, 60, 0.55), transparent) !important;
}

.rsp-room__brand strong {
  color: #fff;
  text-shadow: 0 1px 0 rgba(0,0,0,0.25);
}

.rsp-room__brand span {
  color: rgba(255,255,255,0.82) !important;
}

.rsp-room__chip {
  border: 1px solid rgba(19, 104, 206, 0.55) !important;
  background: rgba(19, 104, 206, 0.35) !important;
  color: #fff !important;
}

.rsp-room__dock {
  background: linear-gradient(0deg, rgba(10, 35, 70, 0.88), rgba(10, 35, 70, 0.35)) !important;
}

.rsp-room .call-button {
  background: linear-gradient(135deg, var(--quiz-blue), color-mix(in srgb, var(--quiz-blue) 55%, var(--quiz-green))) !important;
  box-shadow: 0 12px 28px rgba(19, 104, 206, 0.4) !important;
}

.rsp-room .call-button:hover:not(:disabled) {
  filter: brightness(1.06);
}

.rsp-room-stats b { color: #fff; }
.rsp-room-stats { color: rgba(255,255,255,0.85) !important; }

/* Track brighter + quiz lane colors */
.rsp-room .rsp-track__floor {
  background:
    radial-gradient(ellipse at 50% 35%, rgba(255,220,120,0.18), transparent 55%),
    repeating-linear-gradient(90deg, #1e4a7a 0 22px, #163a62 22px 44px) !important;
  box-shadow:
    inset 0 2px 0 rgba(255,255,255,0.18),
    0 20px 40px rgba(0,0,0,0.35) !important;
  opacity: 1 !important;
}

.rsp-room .rsp-track__oval {
  border-color: rgba(216, 158, 0, 0.55) !important;
}

.rsp-room .rsp-track__lane {
  border-color: rgba(255,255,255,0.35) !important;
}

.rsp-room .rsp-mascot-slot {
  filter: brightness(1.1) saturate(1.4) contrast(1.08) !important;
  opacity: 1 !important;
}

.rsp-room .rsp-mascot-slot.is-dimmed {
  filter: brightness(0.58) saturate(0.9) contrast(0.95) !important;
  opacity: 0.8 !important;
}

.rsp-room .rsp-mascot-slot.is-lit,
.rsp-room .rsp-mascot-slot.is-spotlight,
.rsp-room .rsp-mascot-slot.is-winner {
  filter: brightness(1.25) saturate(1.45) contrast(1.1)
    drop-shadow(0 0 20px rgba(255,230,140,0.75)) !important;
}

.rsp-room .rsp-mascot-slot__name {
  opacity: 1 !important;
  color: #fff !important;
}

.rsp-room-empty__hint,
.rsp-track__preview-hint {
  color: rgba(255,255,255,0.9) !important;
  text-shadow: 0 1px 8px rgba(0,0,0,0.45);
}

/* Mode dock: quiz RGB accents */
.rsp-room .mode-pill.is-active,
.rsp-room .mode-toolbar [aria-selected="true"] {
  background: var(--quiz-blue) !important;
  color: #fff !important;
  border-color: transparent !important;
}

.rsp-room .rsp-track__callout-label {
  color: var(--quiz-yellow) !important;
}

/* ── Roster: light, aligned under header, typeable ── */
.rsp-roster-host {
  position: fixed !important;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 80 !important;
  pointer-events: none;
}

.rsp-drawer__backdrop {
  position: absolute !important;
  inset: 0 !important;
  z-index: 1 !important;
  background: rgba(15, 39, 68, 0.35) !important;
  pointer-events: none !important;
  display: none;
  border: 0;
}

body.rsp-roster-open .rsp-drawer__backdrop {
  display: block !important;
  pointer-events: auto !important;
}

.rsp-drawer {
  position: absolute !important;
  top: max(72px, var(--qm-header-offset, 72px)) !important;
  right: 12px !important;
  bottom: 12px !important;
  left: auto !important;
  width: min(380px, calc(100vw - 24px)) !important;
  height: auto !important;
  max-height: calc(100vh - max(72px, var(--qm-header-offset, 72px)) - 24px) !important;
  z-index: 2 !important;
  transform: translateX(calc(100% + 24px)) !important;
  background: #ffffff !important;
  color: #0f172a !important;
  border: 1px solid #dbe3f0 !important;
  border-radius: 16px !important;
  box-shadow: 0 18px 48px rgba(15, 39, 68, 0.28) !important;
  pointer-events: auto !important;
  overflow: hidden;
}

body.rsp-roster-open .rsp-drawer {
  transform: translateX(0) !important;
}

.rsp-drawer__head {
  background: linear-gradient(135deg, rgba(19,104,206,0.1), rgba(38,137,12,0.08), rgba(226,27,60,0.08)) !important;
  border-bottom: 1px solid #e2e8f0 !important;
  padding: 14px 16px !important;
}

.rsp-drawer__head h2 {
  color: #0f172a !important;
  font-weight: 800 !important;
}

.rsp-drawer__count {
  color: #475569 !important;
  background: #f1f5f9;
  border-radius: 999px;
  padding: 2px 10px;
}

.rsp-drawer__close {
  color: #64748b !important;
  border-radius: 8px;
}

.rsp-drawer__close:hover {
  background: #f1f5f9;
  color: #0f172a !important;
}

.rsp-drawer__body {
  background: #fff !important;
  padding: 14px 16px 20px !important;
}

.rsp-drawer__label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  color: #334155;
  margin-bottom: 6px;
}

.rsp-drawer .class-roster__textarea {
  min-height: 160px !important;
  background: #f8fafc !important;
  color: #0f172a !important;
  border: 1.5px solid #cbd5e1 !important;
  border-radius: 12px !important;
  caret-color: var(--quiz-blue);
  pointer-events: auto !important;
  position: relative;
  z-index: 3;
}

.rsp-drawer .class-roster__textarea:focus {
  outline: none !important;
  border-color: var(--quiz-blue) !important;
  box-shadow: 0 0 0 4px rgba(19, 104, 206, 0.18) !important;
  background: #fff !important;
}

.rsp-drawer .class-roster__textarea::placeholder {
  color: #94a3b8 !important;
}

.rsp-drawer .parse-hint__ok { color: var(--quiz-green) !important; font-weight: 700; }
.rsp-drawer .parse-hint__idle { color: #64748b !important; }

.rsp-drawer .rsp-btn-primary,
.rsp-drawer .rsp-btn-start {
  background: linear-gradient(135deg, var(--quiz-blue), color-mix(in srgb, var(--quiz-blue) 60%, var(--quiz-green))) !important;
  color: #fff !important;
  border: none !important;
  border-radius: 10px !important;
  font-weight: 700 !important;
}

.rsp-drawer .rsp-btn-ghost {
  background: #f1f5f9 !important;
  color: #0f172a !important;
  border: 1px solid #e2e8f0 !important;
  border-radius: 10px !important;
}

.rsp-drawer .participants-list__item,
.rsp-drawer .class-roster__list .participants-list__item {
  background: #f8fafc !important;
  border: 1px solid #e2e8f0 !important;
  color: #0f172a !important;
  border-radius: 10px !important;
}

.rsp-drawer .participants-list__avatar {
  background: color-mix(in srgb, var(--quiz-blue) 18%, #fff) !important;
  color: var(--quiz-blue) !important;
  font-weight: 800;
}

.rsp-drawer .participants-list__item.is-called {
  border-left: 3px solid var(--quiz-green) !important;
}

.rsp-drawer .participants-list__item.is-current {
  border-color: var(--quiz-red) !important;
  box-shadow: 0 0 0 2px rgba(226, 27, 60, 0.15);
}

.rsp-drawer .participants-list__absent {
  background: #fff !important;
  border: 1px solid #e2e8f0 !important;
  color: #64748b !important;
}

@media (max-width: 640px) {
  .rsp-drawer {
    right: 8px !important;
    left: 8px !important;
    width: auto !important;
    top: max(64px, var(--qm-header-offset, 64px)) !important;
  }
}

/* ═══════════════════════════════════════════
   v29b — Brighter quiz lobby blue + dock align
   ═══════════════════════════════════════════ */

.rsp-room {
  --room-bg: #1a4f9c !important;
}

.rsp-room__sky {
  background:
    radial-gradient(ellipse 80% 55% at 8% 0%, rgba(226, 27, 60, 0.45), transparent 50%),
    radial-gradient(ellipse 70% 50% at 92% 5%, rgba(19, 104, 206, 0.15), transparent 48%),
    radial-gradient(ellipse 90% 55% at 50% 110%, rgba(38, 137, 12, 0.35), transparent 52%),
    linear-gradient(160deg, #2b6fd4 0%, #1f5bb8 38%, #184a9a 100%) !important;
}

.rsp-room__mesh { opacity: 0.4 !important; }

.rsp-room__bar {
  background: linear-gradient(180deg, rgba(0,40,100,0.25), transparent) !important;
}

.rsp-room__dock {
  background: linear-gradient(0deg, rgba(8, 40, 100, 0.55), rgba(8, 40, 100, 0.12)) !important;
  gap: 12px !important;
  padding: 14px 16px 20px !important;
}

.rsp-room .rsp-track__floor {
  background:
    radial-gradient(ellipse at 50% 30%, rgba(255,255,255,0.2), transparent 55%),
    repeating-linear-gradient(90deg, #2a6fd0 0 24px, #1f5bb8 24px 48px) !important;
}

.rsp-room-empty__hint,
.rsp-track__preview-hint {
  background: rgba(255,255,255,0.14);
  backdrop-filter: blur(6px);
  border-radius: 999px;
  padding: 8px 16px;
  border: 1px solid rgba(255,255,255,0.22);
}

/* Dock cluster — one centered composition */
.rsp-room__dock {
  display: grid !important;
  grid-template-columns: 1fr;
  justify-items: center;
  align-content: center;
}

.rsp-room__dock .rsp-room__stats,
.rsp-room__dock #modeSelector,
.rsp-room__dock .call-button,
.rsp-room__dock .call-button-hint {
  justify-self: center;
}

.rsp-room__dock #modeSelector {
  display: block !important;
  width: min(520px, 94vw) !important;
}

.rsp-room .mode-toolbar--dock {
  display: flex !important;
  flex-direction: column !important;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: stretch;
  gap: 8px;
  width: 100% !important;
  background: rgba(255,255,255,0.96) !important;
  border-radius: 16px !important;
  padding: 10px 12px !important;
  box-shadow: 0 8px 24px rgba(0,40,100,0.18) !important;
}

.rsp-room .mode-toolbar--dock .mode-segment {
  display: flex !important;
  width: 100%;
  margin: 0 !important;
  gap: 4px;
  padding: 4px;
  background: #eef2f7;
  border: 1px solid #dbe3f0;
  border-radius: 12px;
}

.rsp-room .mode-toolbar--dock .mode-pill {
  flex: 1 1 0;
  min-width: 0;
  padding: 8px 6px;
  font-size: 0.78rem;
  font-weight: 800;
}

.rsp-room .mode-toolbar--dock .options-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin: 0;
}

.rsp-room .call-button {
  width: min(420px, 88vw) !important;
  background: #1368ce !important;
  background-image: none !important;
}

/* Quiz RGB accent strip under bar */
.rsp-room__bar::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, #e21b3c 0%, #1368ce 50%, #26890c 100%);
  opacity: 0.85;
}

/* ═══════════════════════════════════════════
   v31 — Cone spotlight + vivid mascots + solid CTAs
   ═══════════════════════════════════════════ */

/* Pyramid/cone beam: narrow tip at ceiling → wide base on mascot */
.rsp-room .rsp-spotlight-beam {
  --spot-x: 50%;
  --spot-y: 42%;
  --spot-w: 170px;
  --spot-h: 380px;
}

.rsp-room .rsp-spotlight-beam__cone {
  position: absolute !important;
  left: var(--spot-x) !important;
  top: -2% !important;
  width: var(--spot-w) !important;
  height: var(--spot-h) !important;
  transform: translateX(-50%) !important;
  /* True pyramid: tiny tip → wide base */
  clip-path: polygon(46% 0%, 54% 0%, 100% 100%, 0% 100%) !important;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.95) 0%,
    rgba(255, 244, 180, 0.72) 18%,
    rgba(255, 220, 100, 0.38) 48%,
    rgba(255, 200, 60, 0.14) 72%,
    transparent 100%
  ) !important;
  filter: blur(1.5px) !important;
  mix-blend-mode: screen;
  opacity: 0.92 !important;
  pointer-events: none !important;
  /* Soft edge via mask instead of heavy blur */
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 70%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 0%, #000 70%, transparent 100%);
}

/* Ceiling lamp tip */
.rsp-room .rsp-spotlight-beam.is-on::before {
  content: '';
  position: absolute;
  left: var(--spot-x);
  top: -6px;
  width: 18px;
  height: 18px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, #fff 0%, rgba(255,236,150,0.9) 40%, transparent 70%);
  box-shadow: 0 0 24px 8px rgba(255, 230, 140, 0.65);
  z-index: 1;
  pointer-events: none;
}

.rsp-room .rsp-spotlight-beam__pool {
  left: var(--spot-x) !important;
  top: var(--spot-y) !important;
  width: calc(var(--spot-w) * 1.15) !important;
  height: calc(var(--spot-w) * 0.55) !important;
  transform: translate(-50%, 10%) !important;
  border-radius: 50% !important;
  background: radial-gradient(
    ellipse,
    rgba(255,255,255,0.7) 0%,
    rgba(255,230,140,0.35) 40%,
    transparent 72%
  ) !important;
  filter: blur(2px) !important;
  box-shadow: 0 0 36px 6px rgba(255, 210, 100, 0.35) !important;
}

/* Vivid mascots on stage */
.rsp-room .rsp-mascot-slot,
.rsp-room .rsp-track.is-preview .rsp-mascot-slot,
.rsp-room .rsp-track.is-ready .rsp-mascot-slot {
  filter: brightness(1.08) saturate(1.35) contrast(1.06) !important;
  opacity: 1 !important;
}

.rsp-room .rsp-mascot-slot .qz-mascot,
.rsp-room .rsp-mascot-slot__figure {
  filter: none !important;
  opacity: 1 !important;
}

.rsp-room .rsp-mascot-slot.is-dimmed {
  filter: brightness(0.62) saturate(0.85) contrast(0.95) !important;
  opacity: 0.82 !important;
}

.rsp-room .rsp-mascot-slot.is-lit,
.rsp-room .rsp-mascot-slot.is-spotlight,
.rsp-room .rsp-mascot-slot.is-winner {
  filter: brightness(1.22) saturate(1.4) contrast(1.08)
    drop-shadow(0 0 18px rgba(255, 230, 140, 0.7)) !important;
  opacity: 1 !important;
}

.rsp-room .rsp-mascot-slot__name {
  opacity: 1 !important;
  color: #fff !important;
  font-weight: 700 !important;
  text-shadow: 0 2px 10px rgba(0,0,0,0.65) !important;
}

/* Solid quiz-blue CTAs — no skewed multi-hue gradients */
.rsp-room .call-button,
.rsp-room__dock .call-button {
  background: #1368ce !important;
  background-image: none !important;
  box-shadow: 0 10px 28px rgba(19, 104, 206, 0.4) !important;
  color: #fff !important;
}

.rsp-room .call-button::before {
  background: linear-gradient(180deg, rgba(255,255,255,0.18), transparent 55%) !important;
}

.rsp-room .call-button:hover:not(:disabled) {
  background: #0f5bb5 !important;
  filter: none !important;
}

.rsp-drawer .rsp-btn-primary,
.rsp-drawer .rsp-btn-start,
.rsp-drawer .rsp-btn-primary.rsp-btn-start {
  background: #1368ce !important;
  background-image: none !important;
  color: #fff !important;
  box-shadow: 0 6px 16px rgba(19, 104, 206, 0.28) !important;
}

.rsp-drawer .rsp-btn-primary:hover:not(:disabled),
.rsp-drawer .rsp-btn-start:hover:not(:disabled) {
  background: #0f5bb5 !important;
}

.rsp-drawer .rsp-btn-primary:disabled,
.rsp-drawer .rsp-btn-start:disabled {
  background: #94a3b8 !important;
  color: #fff !important;
  opacity: 0.7 !important;
  box-shadow: none !important;
}

/* Modal primary same solid blue */
.rsp-modal__actions .rsp-btn-primary {
  background: #1368ce !important;
  background-image: none !important;
  color: #fff !important;
  box-shadow: 0 6px 16px rgba(19, 104, 206, 0.28) !important;
}

.rsp-modal__actions .rsp-btn-primary:hover {
  background: #0f5bb5 !important;
}

/* Keep beam under modals */
.rsp-modal-overlay {
  z-index: 100 !important;
}

.rsp-room .rsp-spotlight-beam {
  z-index: 5 !important;
}

/* ═══════════════════════════════════════════
   v32 — Hard cone + tip lamp + solid blue CTA
   ═══════════════════════════════════════════ */

.rsp-room .rsp-spotlight-beam.is-on {
  opacity: 1 !important;
}

.rsp-room .rsp-spotlight-beam__tip {
  position: absolute;
  left: var(--spot-x, 50%);
  top: 0;
  width: 14px;
  height: 14px;
  transform: translate(-50%, -30%);
  border-radius: 50%;
  background: #fff;
  box-shadow:
    0 0 12px 4px rgba(255, 250, 200, 0.95),
    0 0 28px 10px rgba(255, 220, 100, 0.55);
  opacity: 0;
  pointer-events: none;
  z-index: 2;
}

.rsp-room .rsp-spotlight-beam.is-on .rsp-spotlight-beam__tip {
  opacity: 1;
}

.rsp-room .rsp-spotlight-beam__cone {
  /* Sharp pyramid from ceiling lamp down onto mascot */
  clip-path: polygon(48.5% 0%, 51.5% 0%, 100% 100%, 0% 100%) !important;
  filter: blur(0.8px) !important;
  -webkit-mask-image: none !important;
  mask-image: none !important;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 1) 0%,
    rgba(255, 248, 200, 0.75) 12%,
    rgba(255, 220, 110, 0.4) 45%,
    rgba(255, 200, 70, 0.16) 75%,
    transparent 100%
  ) !important;
  top: 0 !important;
  mix-blend-mode: screen;
}

/* Kill ::before tip duplicate if present */
.rsp-room .rsp-spotlight-beam.is-on::before {
  display: none !important;
}

body .rsp-room .call-button,
body .rsp-room__dock .call-button,
body #pickBtn.call-button {
  background-color: #1368ce !important;
  background-image: none !important;
  background: #1368ce !important;
}

body .rsp-drawer #startSessionBtn,
body .rsp-drawer .rsp-btn-start,
body .rsp-drawer .rsp-btn-primary {
  background-color: #1368ce !important;
  background-image: none !important;
  background: #1368ce !important;
  color: #fff !important;
}

body .rsp-modal__actions .rsp-btn-primary {
  background: #1368ce !important;
  background-image: none !important;
}

/* ═══════════════════════════════════════════
   v34 — Obvious pyramid cone from ceiling
   ═══════════════════════════════════════════ */

.rsp-room .rsp-spotlight-beam.is-on {
  opacity: 1 !important;
}

.rsp-room .rsp-spotlight-beam__tip {
  left: var(--spot-x, 50%) !important;
  top: 4px !important;
  width: 16px !important;
  height: 16px !important;
  opacity: 0;
  z-index: 3;
}

.rsp-room .rsp-spotlight-beam.is-on .rsp-spotlight-beam__tip {
  opacity: 1 !important;
}

.rsp-room .rsp-spotlight-beam__cone {
  left: var(--spot-x, 50%) !important;
  top: 10px !important;
  width: var(--spot-w, 180px) !important;
  height: var(--spot-h, 360px) !important;
  transform: translateX(-50%) !important;
  /* Clear pyramid: narrow tip → wide floor */
  clip-path: polygon(44% 0%, 56% 0%, 100% 100%, 0% 100%) !important;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.98) 0%,
    rgba(255, 245, 190, 0.7) 20%,
    rgba(255, 215, 90, 0.32) 55%,
    rgba(255, 200, 60, 0.1) 82%,
    transparent 100%
  ) !important;
  filter: none !important;
  mix-blend-mode: plus-lighter;
  opacity: 0.95 !important;
  box-shadow: none !important;
}

/* Soft side edges of the cone */
.rsp-room .rsp-spotlight-beam.is-on .rsp-spotlight-beam__cone::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255,255,255,0.15) 45%,
    rgba(255,255,255,0.15) 55%,
    transparent 100%
  );
  pointer-events: none;
}

.rsp-room .rsp-spotlight-beam__pool {
  left: var(--spot-x, 50%) !important;
  top: var(--spot-y, 50%) !important;
  width: calc(var(--spot-w, 180px) * 1.2) !important;
  height: calc(var(--spot-w, 180px) * 0.48) !important;
  transform: translate(-50%, 0) !important;
  mix-blend-mode: plus-lighter;
}

/* Even richer mascots */
body .rsp-room .rsp-mascot-slot {
  filter: brightness(1.14) saturate(1.5) contrast(1.1) !important;
}

body .rsp-room .rsp-mascot-slot.is-dimmed {
  filter: brightness(0.55) saturate(0.95) !important;
}

body .rsp-room .rsp-mascot-slot.is-lit,
body .rsp-room .rsp-mascot-slot.is-winner {
  filter: brightness(1.28) saturate(1.55) contrast(1.12)
    drop-shadow(0 0 16px rgba(255, 230, 140, 0.8)) !important;
}

/* CTA solid quiz blue — final */
body #pickBtn,
body .rsp-room .call-button {
  background: #1368ce !important;
  background-image: none !important;
}

body #startSessionBtn {
  background: #1368ce !important;
  background-image: none !important;
  color: #fff !important;
}

/* ═══════════════════════════════════════════
   v35 — Fix double-offset beam; true ceiling cone
   ═══════════════════════════════════════════ */

/* Container = full stage only. NEVER use --spot-x on the container. */
body .rsp-room .rsp-spotlight-beam {
  position: absolute !important;
  inset: 0 !important;
  left: 0 !important;
  right: 0 !important;
  top: 0 !important;
  bottom: 0 !important;
  width: auto !important;
  height: auto !important;
  transform: none !important;
  background: none !important;
  clip-path: none !important;
  filter: none !important;
  box-shadow: none !important;
  opacity: 0;
  pointer-events: none !important;
  z-index: 7 !important;
  overflow: visible !important;
}

body .rsp-room .rsp-spotlight-beam.is-on,
body .rsp-room .rsp-spotlight-beam.is-winner-beam {
  opacity: 1 !important;
}

body .rsp-room .rsp-spotlight-beam__tip {
  position: absolute !important;
  left: var(--beam-x, var(--spot-x, 50%)) !important;
  top: 6px !important;
  width: 18px !important;
  height: 18px !important;
  transform: translateX(-50%) !important;
  border-radius: 50% !important;
  background: #fff !important;
  box-shadow: 0 0 16px 6px rgba(255, 240, 160, 0.9) !important;
  opacity: 0;
  z-index: 3 !important;
}

body .rsp-room .rsp-spotlight-beam.is-on .rsp-spotlight-beam__tip {
  opacity: 1 !important;
}

body .rsp-room .rsp-spotlight-beam__cone {
  position: absolute !important;
  left: var(--beam-x, var(--spot-x, 50%)) !important;
  top: 12px !important;
  width: var(--beam-w, var(--spot-w, 200px)) !important;
  height: var(--beam-h, var(--spot-h, 360px)) !important;
  transform: translateX(-50%) !important;
  /* Pyramid chóp: đỉnh hẹp → đáy rộng */
  clip-path: polygon(43% 0%, 57% 0%, 100% 100%, 0% 100%) !important;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.98) 0%,
    rgba(255, 245, 190, 0.75) 18%,
    rgba(255, 215, 90, 0.38) 50%,
    rgba(255, 200, 60, 0.12) 78%,
    transparent 100%
  ) !important;
  filter: none !important;
  mix-blend-mode: plus-lighter !important;
  opacity: 1 !important;
  pointer-events: none !important;
  z-index: 2 !important;
}

body .rsp-room .rsp-spotlight-beam__pool {
  position: absolute !important;
  left: var(--beam-x, var(--spot-x, 50%)) !important;
  top: var(--beam-y, var(--spot-y, 50%)) !important;
  width: calc(var(--beam-w, var(--spot-w, 200px)) * 1.15) !important;
  height: calc(var(--beam-w, var(--spot-w, 200px)) * 0.45) !important;
  transform: translate(-50%, 0) !important;
  border-radius: 50% !important;
  background: radial-gradient(ellipse, rgba(255,255,255,0.7), rgba(255,220,120,0.3) 45%, transparent 72%) !important;
  filter: blur(2px) !important;
  mix-blend-mode: plus-lighter !important;
  z-index: 1 !important;
}

body .rsp-room .rsp-mascot-slot {
  filter: brightness(1.16) saturate(1.55) contrast(1.12) !important;
}

body .rsp-room .rsp-mascot-slot.is-dimmed {
  filter: brightness(0.5) saturate(0.9) !important;
}

body #pickBtn,
body .rsp-room .call-button,
body #startSessionBtn,
body .rsp-drawer .rsp-btn-start {
  background: #1368ce !important;
  background-image: none !important;
  color: #fff !important;
}

/* ═══════════════════════════════════════════
   v36 — Compact track names (no white text dump)
   ═══════════════════════════════════════════ */
body .rsp-room .rsp-mascot-slot {
  max-width: calc(var(--mascot-size, 72px) + 12px) !important;
  overflow: visible !important;
}

body .rsp-room .rsp-mascot-slot__name {
  display: block !important;
  max-width: 100% !important;
  width: 100% !important;
  margin: 4px auto 0 !important;
  padding: 0 2px !important;
  font-size: 0.68rem !important;
  font-weight: 600 !important;
  line-height: 1.15 !important;
  color: rgba(255, 255, 255, 0.88) !important;
  text-align: center !important;
  white-space: nowrap !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.55) !important;
  transform: none !important;
  position: static !important;
  letter-spacing: 0 !important;
}

body .rsp-room .rsp-mascot-slot.is-dimmed .rsp-mascot-slot__name {
  opacity: 0.55 !important;
  color: rgba(255, 255, 255, 0.65) !important;
}

body .rsp-room .rsp-mascot-slot.is-lit .rsp-mascot-slot__name,
body .rsp-room .rsp-mascot-slot.is-winner .rsp-mascot-slot__name {
  opacity: 1 !important;
  color: #ffe08a !important;
  font-weight: 700 !important;
}

/* Callout: only winner, not a dump of the roster */
body .rsp-room .rsp-track__callout-name {
  max-width: min(520px, 90vw);
  margin: 0 auto;
  font-size: clamp(1.1rem, 3vw, 1.65rem) !important;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

body .rsp-room .rsp-track__cast {
  flex-wrap: nowrap !important;
  overflow-x: auto;
  overflow-y: hidden;
  max-width: 100%;
  scrollbar-width: thin;
}

/* ═══════════════════════════════════════════
   v40 — 2/3 room + 1/3 control rail, contrast, history
   ═══════════════════════════════════════════ */

.rsp-immersive {
  display: grid !important;
  grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr) !important;
  gap: 0 !important;
  min-height: calc(100vh - 60px);
  align-items: stretch;
}

.rsp-arena-col--room {
  min-width: 0;
  min-height: 0;
}

.rsp-room {
  min-height: 100% !important;
  height: 100%;
  grid-template-rows: auto minmax(0, 1fr) auto !important;
}

.rsp-room__dock--minimal {
  display: none !important;
}

.rsp-control-rail {
  position: relative;
  z-index: 5;
  background: #f8fafc;
  color: #0f172a;
  border-left: 1px solid #dbe3f0;
  min-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.rsp-control-rail__inner {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px 14px 18px;
  height: 100%;
  min-height: 0;
  overflow: auto;
  --text: #0f172a;
  --text-secondary: #334155;
  --muted: #64748b;
  --surface: #ffffff;
  --surface-2: #f1f5f9;
  --surface-inset: #eef2f7;
  --border: #dbe3f0;
  --border-strong: #cbd5e1;
}

.rsp-control-rail__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.rsp-control-rail__head strong {
  font-size: 0.95rem;
  font-weight: 800;
  color: #0f172a;
}

.rsp-control-rail__sub {
  font-size: 0.72rem;
  color: #64748b;
  font-weight: 600;
}

.rsp-control-rail .rsp-room-stats {
  color: #475569 !important;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 8px 12px;
  width: 100%;
  justify-content: space-between;
}

.rsp-control-rail .rsp-room-stats b {
  color: #0f172a !important;
}

.rsp-control-rail .mode-toolbar,
.rsp-control-rail .mode-toolbar--dock {
  background: #fff !important;
  border: 1px solid #e2e8f0 !important;
  border-radius: 14px !important;
  padding: 10px !important;
  box-shadow: none !important;
  width: 100% !important;
}

.rsp-control-rail .mode-segment {
  background: #eef2f7 !important;
  border: 1px solid #dbe3f0 !important;
}

.rsp-control-rail .mode-pill {
  color: #334155 !important;
  background: transparent !important;
}

.rsp-control-rail .mode-pill.is-active,
.rsp-control-rail .mode-toolbar [aria-selected="true"] {
  background: #1368ce !important;
  color: #fff !important;
}

.rsp-control-rail .options-bar {
  background: #f8fafc !important;
  border-color: #e2e8f0 !important;
}

.rsp-control-rail .opt-stepper {
  color: #0f172a !important;
}

.rsp-control-rail .opt-stepper em {
  color: #0f172a !important;
  font-weight: 800;
  min-width: 1.4em;
  text-align: center;
}

.rsp-control-rail .opt-stepper button {
  background: #fff !important;
  color: #0f172a !important;
  border: 1px solid #cbd5e1 !important;
  font-weight: 800;
}

.rsp-control-rail .opt-stepper button:hover {
  background: #eff6ff !important;
  color: #1368ce !important;
  border-color: #93c5fd !important;
}

.rsp-control-rail .opt-toggle {
  color: #334155 !important;
  background: #fff !important;
  border: 1px solid #e2e8f0 !important;
}

.rsp-control-rail .opt-toggle.is-on {
  color: #1d4ed8 !important;
  border-color: rgba(37, 99, 235, 0.35) !important;
  background: #eff6ff !important;
}

.rsp-control-rail .opt-toggle--sound.is-muted {
  color: #64748b !important;
}

.rsp-control-rail .call-button {
  width: 100% !important;
  min-width: 0 !important;
  min-height: 52px !important;
  margin: 0 !important;
  background: #1368ce !important;
  color: #fff !important;
  border-radius: 14px !important;
}

.rsp-control-rail .call-button:disabled {
  background: #94a3b8 !important;
  color: #fff !important;
  opacity: 0.75;
}

.rsp-control-rail .call-button-hint {
  color: #64748b !important;
  text-align: left;
  margin: 0;
  font-size: 0.75rem;
}

.rsp-control-rail__history {
  flex: 1;
  min-height: 160px;
  display: flex;
  flex-direction: column;
}

.rsp-control-rail .rsp-history-rail {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: none;
}

.rsp-control-rail .rsp-history-rail__head {
  background: #f8fafc;
  border-bottom: 1px solid #e2e8f0;
  color: #0f172a;
  font-weight: 800;
  font-size: 0.82rem;
  padding: 10px 12px;
}

.rsp-control-rail .rsp-history-rail__body {
  flex: 1;
  overflow: auto;
  padding: 10px 12px 14px;
  background: #fff;
}

.rsp-control-rail .rsp-history-item__names {
  color: #0f172a !important;
  font-weight: 700;
  white-space: normal !important;
  word-break: break-word;
}

.rsp-control-rail .rsp-history-item__meta,
.rsp-control-rail .rsp-history-item__num,
.rsp-control-rail .rsp-history-empty,
.rsp-control-rail .rsp-history-empty p {
  color: #64748b !important;
}

.rsp-control-rail .rsp-tool-btn {
  background: #fff !important;
  color: #334155 !important;
  border: 1px solid #e2e8f0 !important;
}

.rsp-control-rail .rsp-tool-btn:hover:not(:disabled) {
  color: #1368ce !important;
  border-color: #93c5fd !important;
}

.rsp-control-rail .rsp-tool-btn:disabled {
  opacity: 0.4;
}

@media (max-width: 960px) {
  .rsp-immersive {
    grid-template-columns: 1fr !important;
    grid-template-rows: minmax(42vh, 2fr) minmax(280px, 1fr) !important;
  }

  .rsp-control-rail {
    border-left: none;
    border-top: 1px solid #dbe3f0;
    max-height: 48vh;
  }

  .rsp-room {
    min-height: 42vh !important;
  }
}

/* v40b — never show legacy in-room dock controls */
.rsp-room__dock:not(.rsp-room__dock--minimal) {
  display: none !important;
}
.rsp-room #modeSelector,
.rsp-room #pickBtn,
.rsp-room .call-button,
.rsp-room .rsp-room__stats {
  display: none !important;
}

/* Force readable stepper/toggles even if still under .rsp-room */
.rsp-control-rail .opt-stepper button,
.rsp-control-rail .opt-stepper em,
body .rsp-control-rail .opt-stepper button,
body .rsp-control-rail .opt-stepper em {
  color: #0f172a !important;
  -webkit-text-fill-color: #0f172a !important;
}

/* v40c — room without bottom dock */
.rsp-room {
  grid-template-rows: auto minmax(0, 1fr) !important;
}
.rsp-modal__actions .rsp-btn-ghost {
  background: #f1f5f9 !important;
  color: #0f172a !important;
  border: 1px solid #e2e8f0 !important;
}
.rsp-modal__actions .rsp-btn-ghost:hover {
  background: #e2e8f0 !important;
  color: #0f172a !important;
}

/* ═══════════════════════════════════════════
   v41 — Modal contrast: never inherit stage light text
   ═══════════════════════════════════════════ */

.rsp-modal-overlay .rsp-modal,
body .rsp-modal-overlay .rsp-modal,
body .rsp-modal {
  --text: #0f172a !important;
  --text-secondary: #334155 !important;
  --muted: #64748b !important;
  --qm-text: #0f172a !important;
  background: #ffffff !important;
  color: #0f172a !important;
  -webkit-text-fill-color: #0f172a;
}

.rsp-modal__title,
body .rsp-modal__title {
  color: #0f172a !important;
  -webkit-text-fill-color: #0f172a !important;
}

.rsp-modal__body,
.rsp-modal__stat,
body .rsp-modal__body,
body .rsp-modal__stat {
  color: #334155 !important;
  -webkit-text-fill-color: #334155 !important;
}

.rsp-modal__stat {
  color: #0f172a !important;
  -webkit-text-fill-color: #0f172a !important;
}

body .rsp-modal__actions .rsp-btn-primary,
body .rsp-modal__actions .rsp-btn-primary.rsp-btn-accent {
  background: #1368ce !important;
  background-image: none !important;
  color: #fff !important;
  -webkit-text-fill-color: #fff !important;
  border: none !important;
}

body .rsp-modal__actions .rsp-btn-ghost {
  background: #f1f5f9 !important;
  color: #0f172a !important;
  -webkit-text-fill-color: #0f172a !important;
  border: 1px solid #e2e8f0 !important;
}

body .rsp-modal__actions .rsp-btn-ghost:hover {
  background: #e2e8f0 !important;
  color: #0f172a !important;
}

/* Round history marker + modal note */
.rsp-history-item--marker {
  list-style: none;
  display: flex;
  justify-content: center;
  padding: 8px 0 4px;
  animation: none;
}
.rsp-history-item--marker .rsp-history-item__marker {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #64748b !important;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: 999px;
  padding: 4px 12px;
}
.rsp-modal__note {
  font-size: 0.8rem !important;
  color: #64748b !important;
  margin-top: -8px !important;
  margin-bottom: 16px !important;
  font-weight: 500 !important;
}