:root,
[data-theme="dark"] {
  /* Color Palette - Dark Mode: Premium Blue & Sky Blue */
  --bg: #070c18;
  --bg-surface: #0e172a;
  --bg-surface-elevated: #15223c;
  --bg-surface-hover: #1e2f52;
  
  --border: #1e2f4d;
  --border-subtle: #142036;
  --border-hover: #2b436e;
  --border-focus: #38bdf8;

  --text: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Accent Roles: Biru Premium & Biru Sky */
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-subtle: rgba(37, 99, 235, 0.15);

  --accent: #38bdf8;
  --accent-hover: #0ea5e9;
  --accent-subtle: rgba(56, 189, 248, 0.15);

  --success: #10b981;
  --success-subtle: rgba(16, 185, 129, 0.12);
  --danger: #f43f5e;
  --danger-subtle: rgba(244, 63, 94, 0.12);
  --warning: #f59e0b;
  --warning-subtle: rgba(245, 158, 11, 0.12);

  --bg-dots: rgba(56, 189, 248, 0.05);
  --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  --letter-bg: rgba(255, 255, 255, 0.06);

  /* Unified Strict Radius System */
  --radius-card: 14px;
  --radius: 8px;
  --radius-sm: 6px;
  --radius-pill: 9999px;

  /* Typography */
  --font-sans: "Plus Jakarta Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

[data-theme="light"] {
  /* Color Palette - Light Mode: Premium Blue & Sky Blue */
  --bg: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-surface-hover: #e2e8f0;
  
  --border: #e2e8f0;
  --border-subtle: #f1f5f9;
  --border-hover: #cbd5e1;
  --border-focus: #0284c7;

  --text: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;

  /* Accent Roles: Biru Premium & Biru Sky */
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-subtle: rgba(37, 99, 235, 0.1);

  --accent: #0284c7;
  --accent-hover: #0369a1;
  --accent-subtle: rgba(2, 132, 199, 0.1);

  --success: #059669;
  --success-subtle: rgba(5, 150, 105, 0.1);
  --danger: #e11d48;
  --danger-subtle: rgba(225, 29, 72, 0.1);
  --warning: #d97706;
  --warning-subtle: rgba(217, 119, 6, 0.1);

  --bg-dots: rgba(2, 132, 199, 0.08);
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --letter-bg: rgba(15, 23, 42, 0.06);
}

[hidden] {
  display: none !important;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  background-color: var(--bg);
  background-image: radial-gradient(circle at 1px 1px, var(--bg-dots) 1px, transparent 0);
  background-size: 24px 24px;
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.2s ease, color 0.2s ease;
}

#app {
  max-width: 920px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

/* ==========================================================================
   Top Navigation & Theme Switcher
   ========================================================================== */

.top-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  margin-bottom: 20px;
}



.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.theme-toggle-btn:hover {
  background: var(--bg-surface-hover);
  color: var(--text);
  border-color: var(--border-hover);
}

.theme-toggle-btn i {
  font-size: 1rem;
  color: var(--accent);
  transition: transform 0.25s ease;
}

.theme-toggle-btn:hover i {
  transform: rotate(18deg) scale(1.1);
}

.screen {
  animation: screen-in 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes screen-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Header & Brand (Single Focal Point, No Competing Elements)
   ========================================================================== */

.home-header {
  text-align: center;
  margin-bottom: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.brand-title {
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--text);
}

.tagline {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.92rem;
}

/* ==========================================================================
   Layout Grid & Cards
   ========================================================================== */

.home-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 768px) {
  .home-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 22px;
  box-shadow: var(--card-shadow);
}

.card-heading {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.side-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ==========================================================================
   Form Controls & Inputs
   ========================================================================== */

.form-group {
  margin-bottom: 14px;
}

.field-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.input {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-surface-elevated);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.18);
}

.input::placeholder {
  color: var(--text-dim);
}

.select-wrapper {
  position: relative;
}

.select-wrapper select.input {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 32px;
  cursor: pointer;
}

.select-chevron {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.create-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 8px;
}

@media (max-width: 520px) {
  .create-options {
    grid-template-columns: 1fr;
  }
}

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-dim);
  margin: 20px 0 14px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.divider::before,
.divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border-subtle);
}

.join-section {
  margin-top: 4px;
}

.join-row {
  display: flex;
  gap: 8px;
}

.join-row .input {
  flex: 1;
}

.join-row .btn {
  margin-top: 0;
  width: auto;
  padding: 0 18px;
}

.code-input {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 3px;
  font-weight: 700;
  text-align: center;
}

/* ==========================================================================
   Button Hierarchy System (Only ONE Prominent Button Per Card/Screen)
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  margin-top: 14px;
  padding: 11px 16px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.12s ease;
  user-select: none;
}

.btn i {
  font-size: 1.1rem;
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* 1. PRIMARY: The Single Focal Action */
.btn-primary {
  background: var(--primary);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.35);
}

.btn-primary:not(:disabled):hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.45);
}

/* 2. SURFACE / SECONDARY: Subtle, steps back to let Primary shine */
.btn-surface {
  background: var(--bg-surface-elevated);
  border-color: var(--border);
  color: var(--text);
}

.btn-surface:not(:disabled):hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-hover);
}

/* 3. GHOST / TERTIARY: Minimalist understated action */
.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--text-muted);
}

.btn-ghost:not(:disabled):hover {
  background: var(--bg-surface-elevated);
  color: var(--text);
}

.btn-icon {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  transition: color 0.15s ease, background-color 0.15s ease;
}

.btn-icon:hover {
  color: var(--text);
  background: var(--bg-surface-hover);
}

.card-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 18px;
}

/* ==========================================================================
   Profile & Leaderboard
   ========================================================================== */

.profile-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.profile-avatar {
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
}

.profile-meta {
  display: flex;
  flex-direction: column;
}

.profile-caption {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  font-weight: 600;
}

.profile-name {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.stat-tile {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.stat-num {
  font-size: 1.2rem;
  font-weight: 800;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.72rem;
  color: var(--text-dim);
  font-weight: 500;
  margin-top: 2px;
}

.leaderboard {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.leaderboard li {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 8px 12px;
  font-size: 0.88rem;
}

.lb-rank {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.78rem;
  min-width: 18px;
  text-align: center;
  color: var(--text-dim);
}

.lb-rank.rank-1 { color: #fbbf24; }
.lb-rank.rank-2 { color: #cbd5e1; }
.lb-rank.rank-3 { color: #d97706; }

.leaderboard .lb-name {
  flex: 1;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.leaderboard .lb-wins {
  color: var(--text-muted);
  font-size: 0.8rem;
  font-family: var(--font-mono);
}

.leaderboard .lb-empty {
  justify-content: center;
  color: var(--text-dim);
  padding: 16px;
}

/* ==========================================================================
   Lobby Screen
   ========================================================================== */

.lobby-card {
  max-width: 480px;
  margin: 4vh auto 0;
  text-align: center;
  padding: 28px 24px;
}

.lobby-caption {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  display: block;
  margin-bottom: 8px;
}

.room-code-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border);
  padding: 8px 18px;
  border-radius: var(--radius);
  margin-bottom: 8px;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.room-code-box:hover {
  border-color: var(--border-hover);
}

.room-code {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 6vw, 2.5rem);
  font-weight: 800;
  letter-spacing: 6px;
  color: var(--accent);
}

.lobby-info {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0 0 20px;
}

.lobby-slots {
  display: grid;
  gap: 10px;
  margin-bottom: 12px;
  width: 100%;
}

.lobby-slots.mode-solo {
  grid-template-columns: 1fr;
  max-width: 280px;
  margin-left: auto;
  margin-right: auto;
}

.lobby-slots.mode-duel,
.versus {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.lobby-slots.mode-trio {
  grid-template-columns: repeat(3, 1fr);
}

.lobby-slots.mode-squad {
  grid-template-columns: repeat(2, 1fr);
}

@media (max-width: 520px) {
  .lobby-slots.mode-trio,
  .lobby-slots.mode-squad {
    grid-template-columns: 1fr;
  }
}

.player-slot {
  flex: 1;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 10px;
  min-height: 76px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.player-slot.empty {
  border-style: dashed;
  border-color: var(--border-subtle);
  background: rgba(255, 255, 255, 0.01);
}

.player-slot.filled {
  border-color: var(--border-hover);
}

.p-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0 4px;
  margin-bottom: 2px;
}

.slot-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-subtle);
  padding: 1px 6px;
  border-radius: var(--radius-pill);
}

.player-slot .p-name-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.player-slot .p-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.p-dot.on { background: var(--success); }
.p-dot.off { background: var(--danger); }

.player-slot .p-name {
  font-weight: 600;
  font-size: 0.92rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.player-slot .p-tag {
  font-size: 0.72rem;
  color: var(--text-dim);
}

.player-slot .p-tag.host {
  color: #fbbf24;
}

.slot-empty {
  color: var(--text-dim);
  font-size: 0.82rem;
}

.vs-divider {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--text-dim);
  padding: 0 4px;
}

/* ==========================================================================
   Game Screen
   ========================================================================== */

.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 8px;
}

.round-indicator {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
}

.round-indicator .boss-tag {
  color: var(--danger);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.scoreline {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.score-chip {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px 10px;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.score-chip.me {
  border-color: var(--accent);
  background: var(--accent-subtle);
}

.score-chip .sc-name {
  font-weight: 600;
}

.score-chip .score-val {
  font-family: var(--font-mono);
  font-weight: 800;
  color: var(--accent);
}

.score-chip .done-flag {
  color: var(--success);
  display: inline-flex;
}

.timer-section {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.timer-display {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-muted);
  min-width: 58px;
}

.timer-num {
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.timer-unit {
  font-size: 0.72rem;
  color: var(--text-dim);
}

.timer-display.low {
  color: var(--danger);
}

.timer-display.low .timer-num {
  color: var(--danger);
}

.timer-track {
  flex: 1;
  height: 6px;
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-pill);
  overflow: hidden;
}

.timer-progress {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: var(--radius-pill);
  transition: width 0.12s linear;
}

.timer-progress.low {
  background: var(--danger);
}

.question-card {
  position: relative;
}

.question-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 28px;
  margin-bottom: 8px;
}

.reveal-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.reveal-header-bar .reveal-heading {
  margin-bottom: 0;
}

.btn-report-q {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-left: auto;
  padding: 4px 10px;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-dim);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.btn-report-q:hover:not(:disabled) {
  color: var(--warning);
  border-color: var(--warning);
  background: var(--warning-subtle);
}

.btn-report-q.reported,
.btn-report-q:disabled {
  color: var(--warning);
  border-color: rgba(245, 158, 11, 0.4);
  background: var(--warning-subtle);
  cursor: default;
  opacity: 0.9;
}

.boss-banner {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--danger);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0;
}

.question-text {
  font-size: clamp(1.2rem, 3.2vw, 1.5rem);
  font-weight: 700;
  line-height: 1.45;
  margin: 0 0 20px;
  color: var(--text);
}

.answer-number {
  display: flex;
  align-items: center;
  gap: 8px;
}

.answer-number .input {
  font-size: 1.1rem;
  font-family: var(--font-mono);
}

.answer-number .btn {
  margin-top: 0;
  width: auto;
  padding: 10px 20px;
  white-space: nowrap;
}

.unit-suffix {
  color: var(--text-muted);
  font-weight: 600;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

@media (max-width: 520px) {
  .options-grid {
    grid-template-columns: 1fr;
  }
}

.option-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-surface-elevated);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: all 0.12s ease;
}

.option-btn:hover:not(:disabled) {
  border-color: var(--border-hover);
  background: var(--bg-surface-hover);
}

.option-btn.selected {
  border-color: var(--accent);
  background: var(--accent-subtle);
  color: var(--text);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.25);
}

.option-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: var(--radius-sm);
  background: var(--letter-bg);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  flex-shrink: 0;
}

.option-btn.selected .option-letter {
  background: var(--accent);
  color: #ffffff;
}

.option-text {
  flex: 1;
}

.game-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 18px;
  min-height: 24px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
}

.attempts-box {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
}

.attempts-dots {
  display: inline-flex;
  gap: 4px;
}

.att-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border-hover);
}

.att-dot.active {
  background: var(--accent);
}

.feedback-box {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
}

.feedback-box.ok { color: var(--success); }
.feedback-box.no { color: var(--danger); }

.shake {
  animation: shake-card 0.3s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

@keyframes shake-card {
  10%, 90% { transform: translate3d(-1px, 0, 0); }
  20%, 80% { transform: translate3d(2px, 0, 0); }
  30%, 50%, 70% { transform: translate3d(-3px, 0, 0); }
  40%, 60% { transform: translate3d(3px, 0, 0); }
}

/* ==========================================================================
   Reveal Panel
   ========================================================================== */

.reveal-card {
  margin-top: 16px;
}

.reveal-heading {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 10px;
}

.reveal-results {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

.reveal-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 8px 12px;
  font-size: 0.88rem;
}

.reveal-row .rr-name {
  font-weight: 600;
}

.reveal-row .rr-detail {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-left: auto;
  margin-right: 12px;
}

.text-success { color: var(--success); }
.text-danger { color: var(--danger); }

.reveal-row .rr-points {
  font-family: var(--font-mono);
  font-weight: 800;
}

.reveal-row .rr-points.ok { color: var(--success); }
.reveal-row .rr-points.no { color: var(--danger); }

.reveal-solution {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 12px;
}

.reveal-correct-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
  font-size: 0.88rem;
}

.reveal-correct-label {
  color: var(--text-muted);
  font-weight: 600;
}

.reveal-correct-val {
  font-family: var(--font-mono);
  font-weight: 800;
  color: var(--accent);
}

.reveal-explanation {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.45;
}

/* ==========================================================================
   Result Screen
   ========================================================================== */

.result-card {
  max-width: 480px;
  margin: 4vh auto 0;
  text-align: center;
  padding: 28px 24px;
}

.result-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border);
  color: var(--text);
}

.result-card.win .result-icon-box {
  color: #fbbf24;
  background: var(--warning-subtle);
}

.result-card.lose .result-icon-box {
  color: var(--danger);
  background: var(--danger-subtle);
}

.result-title {
  font-size: 1.6rem;
  font-weight: 800;
  margin: 0 0 2px;
}

.result-subtitle {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin: 0 0 20px;
}

.result-section {
  margin-bottom: 16px;
  text-align: left;
}

.result-section-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin: 0 0 8px;
}

.result-scores {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.result-score-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 0.95rem;
}

.result-score-row.winner {
  border-color: var(--accent);
  background: var(--accent-subtle);
}

.rs-left {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.rs-rank {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  min-width: 20px;
  text-align: center;
  color: var(--text-dim);
}

.result-score-row.winner .rs-rank {
  color: #fbbf24;
}

.rs-name {
  font-weight: 600;
}

.result-score-row .rs-val {
  font-family: var(--font-mono);
  font-weight: 800;
  color: var(--accent);
}

.result-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.result-stats > div {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.waiting-host {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 8px 0 0;
}

/* ==========================================================================
   Toast Notification
   ========================================================================== */

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-hover);
  color: var(--text);
  padding: 8px 16px;
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  z-index: 999;
  max-width: 90vw;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 500;
}

.toast i {
  color: var(--accent);
}

.ti-spin {
  animation: icon-spin 1.2s infinite linear;
}

@keyframes icon-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}