/* ==========================================================================
   PREMIUM CLAYMORPHISM DESIGN SYSTEM - GOOGLE ONE AI PRO 5TB MARATHON
   Ultra-modern, tactile 3D clay with crisp SVG vectors & spring physics
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:ital,wght@0,400;0,500;0,600;0,700;0,800;1,700&display=swap');

:root {
  /* Color Palette - Neo-Pastel Modern */
  --clay-bg: #E8EEF5;
  --clay-card: #F0F4F8;
  --clay-card-hover: #F5F8FC;
  --clay-surface: #E2E8F0;
  --clay-border: rgba(255, 255, 255, 0.85);
  --clay-border-subtle: rgba(255, 255, 255, 0.45);
  
  /* Vibrant Primary Accents */
  --primary: #3B82F6;
  --primary-light: #60A5FA;
  --primary-dark: #2563EB;
  --primary-glow: rgba(59, 130, 246, 0.35);

  --accent-purple: #8B5CF6;
  --accent-purple-light: #A78BFA;
  --accent-purple-glow: rgba(139, 92, 246, 0.35);

  --coral: #FF5A5F;
  --coral-dark: #E0484D;
  --coral-glow: rgba(255, 90, 95, 0.35);

  --success: #10B981;
  --success-dark: #059669;
  --warning: #F59E0B;
  
  /* Text */
  --text-main: #1E293B;
  --text-muted: #64748B;
  --text-light: #94A3B8;

  /* Refined Dual Clay Shadows (Light Source: Top-Left) */
  --shadow-clay: 
    12px 14px 28px #cbd7e6,
    -10px -10px 24px #ffffff,
    inset 2px 2px 4px rgba(255, 255, 255, 0.9),
    inset -2px -2px 4px rgba(0, 0, 0, 0.04);

  --shadow-clay-sm: 
    6px 8px 16px #cbd7e6,
    -6px -6px 16px #ffffff,
    inset 1.5px 1.5px 3px rgba(255, 255, 255, 0.9),
    inset -1.5px -1.5px 3px rgba(0, 0, 0, 0.03);

  --shadow-clay-lg: 
    18px 22px 40px #c2d0e2,
    -16px -16px 36px #ffffff,
    inset 3px 3px 6px rgba(255, 255, 255, 0.95),
    inset -3px -3px 6px rgba(0, 0, 0, 0.05);

  /* Inset Grooves for Inputs & Wells */
  --shadow-inset: 
    inset 3px 3px 7px #cad6e4,
    inset -3px -3px 7px #ffffff;

  --shadow-inset-active: 
    inset 5px 5px 10px #becede,
    inset -5px -5px 10px #ffffff;

  /* Pressed Button Depression */
  --shadow-btn-pressed: 
    inset 3px 3px 7px rgba(0, 0, 0, 0.2),
    inset -3px -3px 7px rgba(255, 255, 255, 0.5);

  /* Radii */
  --radius-xs: 10px;
  --radius-sm: 16px;
  --radius-md: 22px;
  --radius-lg: 30px;
  --radius-pill: 9999px;

  /* Easing curves */
  --spring: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  --smooth: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--clay-bg);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
  position: relative;
  letter-spacing: -0.01em;
}

/* Ambient dynamic background lighting */
body::before, body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
  filter: blur(80px);
  opacity: 0.6;
}

body::before {
  top: -120px;
  left: -80px;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, #93C5FD 0%, rgba(232, 238, 245, 0) 70%);
}

body::after {
  bottom: -150px;
  right: -80px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #DDD6FE 0%, rgba(232, 238, 245, 0) 70%);
}

/* Main Container */
#app {
  width: 100%;
  max-width: 880px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1.25rem;
}

/* Vector Icon Generic Helper */
.ui-icon {
  width: 1.25rem;
  height: 1.25rem;
  display: inline-block;
  vertical-align: middle;
  stroke-width: 2.2;
  stroke: currentColor;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.ui-icon-sm {
  width: 1rem;
  height: 1rem;
}

.ui-icon-lg {
  width: 1.75rem;
  height: 1.75rem;
}

/* Top App Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.5rem;
  margin-bottom: 1.5rem;
  background: var(--clay-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--clay-border);
  box-shadow: var(--shadow-clay);
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-logo-gemini {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 50%, #EC4899 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 4px 6px 14px var(--primary-glow), inset 2px 2px 3px rgba(255, 255, 255, 0.8);
  transition: var(--spring);
}

.brand-logo-gemini:hover {
  transform: rotate(10deg) scale(1.05);
}

.brand-meta h1 {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-pill);
  background: #EFF6FF;
  color: #1D4ED8;
  border: 1px solid #BFDBFE;
  letter-spacing: 0.02em;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Toggle Pill */
.clay-toggle {
  display: inline-flex;
  align-items: center;
  background: #dbe4ef;
  border-radius: var(--radius-pill);
  padding: 4px;
  box-shadow: var(--shadow-inset);
}

.clay-toggle-btn {
  border: none;
  background: transparent;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--spring);
}

.clay-toggle-btn.active {
  background: var(--clay-card);
  color: var(--primary-dark);
  box-shadow: 2px 2px 6px #c5d0de, -2px -2px 6px #ffffff, inset 1px 1px 2px rgba(255, 255, 255, 0.9);
}

/* Icon Buttons */
.clay-icon-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--clay-border);
  background: var(--clay-card);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-clay-sm);
  color: var(--text-main);
  transition: var(--spring);
}

.clay-icon-btn:hover {
  transform: translateY(-2px);
  color: var(--primary);
}

.clay-icon-btn:active {
  transform: translateY(1px);
  box-shadow: var(--shadow-btn-pressed);
}

/* Clay Cards */
.clay-card {
  background: var(--clay-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--clay-border);
  box-shadow: var(--shadow-clay);
  padding: 2.25rem;
  position: relative;
  transition: var(--smooth);
}

.clay-card-sm {
  background: var(--clay-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--clay-border);
  box-shadow: var(--shadow-clay-sm);
  padding: 1.25rem;
}

/* Typography */
.title-xl {
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: -0.035em;
  color: var(--text-main);
  margin-bottom: 0.5rem;
  line-height: 1.25;
}

.subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.55;
  font-weight: 500;
}

/* Modern Prize Hero Showcase */
.prize-banner {
  background: linear-gradient(135deg, #1E1B4B 0%, #312E81 50%, #4338CA 100%);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  color: #ffffff;
  position: relative;
  overflow: hidden;
  box-shadow: 10px 14px 30px rgba(49, 46, 129, 0.35), inset 2px 2px 4px rgba(255, 255, 255, 0.3);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.prize-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 140%;
  height: 200%;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.25) 0%, transparent 60%);
  pointer-events: none;
}

.prize-content {
  z-index: 1;
}

.prize-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(12px);
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.65rem;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #E0E7FF;
}

.prize-title {
  font-size: 1.55rem;
  font-weight: 800;
  margin-bottom: 0.35rem;
  letter-spacing: -0.03em;
  background: linear-gradient(90deg, #FFFFFF, #E0E7FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.prize-desc {
  font-size: 0.88rem;
  color: #C7D2FE;
  line-height: 1.45;
}

.prize-emblem {
  position: relative;
  width: 90px;
  height: 90px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.prize-ring-glow {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  background: linear-gradient(135deg, #F59E0B, #EF4444);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 25px rgba(245, 158, 11, 0.5), inset 2px 2px 4px rgba(255, 255, 255, 0.7);
  animation: pulse-ring 3s infinite ease-in-out;
}

@keyframes pulse-ring {
  0%, 100% { transform: scale(1) rotate(0deg); }
  50% { transform: scale(1.06) rotate(6deg); }
}

/* Inputs & Form Groups */
.clay-input-group {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.clay-label {
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.clay-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.clay-input-icon {
  position: absolute;
  left: 16px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  transition: var(--smooth);
}

.clay-input {
  width: 100%;
  padding: 1rem 1.25rem 1rem 3.1rem;
  background: #E8EEF5;
  border-radius: var(--radius-md);
  border: 1.5px solid transparent;
  box-shadow: var(--shadow-inset);
  font-size: 0.98rem;
  font-family: inherit;
  font-weight: 600;
  color: var(--text-main);
  outline: none;
  transition: var(--smooth);
}

.clay-input:focus {
  border-color: var(--primary);
  background: #EEF4FA;
  box-shadow: var(--shadow-inset-active), 0 0 0 4px var(--primary-glow);
}

.clay-input:focus + .clay-input-icon {
  color: var(--primary);
}

.clay-input.error {
  border-color: var(--coral);
  box-shadow: var(--shadow-inset), 0 0 0 4px var(--coral-glow);
}

.input-error-msg {
  font-size: 0.78rem;
  color: var(--coral-dark);
  font-weight: 700;
  display: none;
  align-items: center;
  gap: 0.3rem;
}

.input-error-msg.visible {
  display: flex;
}

/* Clay Buttons */
.clay-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 1rem 1.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.7);
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--spring);
  text-decoration: none;
  user-select: none;
}

.clay-btn:hover:not(:disabled) {
  transform: translateY(-2.5px);
}

.clay-btn:active:not(:disabled) {
  transform: translateY(2px) scale(0.985);
}

.clay-btn-primary {
  background: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
  color: #ffffff;
  box-shadow: 
    6px 8px 20px var(--primary-glow),
    -6px -6px 20px #ffffff,
    inset 2px 2px 4px rgba(255, 255, 255, 0.7),
    inset -2px -2px 4px rgba(0, 0, 0, 0.15);
}

.clay-btn-primary:active:not(:disabled) {
  box-shadow: var(--shadow-btn-pressed);
}

.clay-btn-coral {
  background: linear-gradient(135deg, #FF5A5F 0%, #E0484D 100%);
  color: #ffffff;
  box-shadow: 
    6px 8px 20px var(--coral-glow),
    -6px -6px 20px #ffffff,
    inset 2px 2px 4px rgba(255, 255, 255, 0.7),
    inset -2px -2px 4px rgba(0, 0, 0, 0.15);
}

.clay-btn-neutral {
  background: var(--clay-card);
  color: var(--text-main);
  box-shadow: var(--shadow-clay-sm);
}

.clay-btn-neutral:hover:not(:disabled) {
  background: var(--clay-card-hover);
  color: var(--primary);
}

.clay-btn-block {
  width: 100%;
}

.clay-btn:disabled, .clay-btn.disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: var(--shadow-clay-sm);
}

/* User Identity Bar in Lobby */
.user-profile-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 1.5rem;
  background: var(--clay-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--clay-border);
  box-shadow: var(--shadow-clay-sm);
  margin-bottom: 1.75rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.user-identity {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.user-avatar {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, #3B82F6, #10B981);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 3px 4px 10px rgba(59, 130, 246, 0.35), inset 2px 2px 3px rgba(255, 255, 255, 0.8);
}

.user-text-name {
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.user-text-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
}

.user-aggregate-score {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: #E8EEF5;
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-inset);
}

.score-badge-val {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary-dark);
}

/* Marathon Session Cards Grid */
.sessions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.35rem;
  margin-bottom: 2rem;
}

.session-clay-card {
  background: var(--clay-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--clay-border);
  box-shadow: var(--shadow-clay);
  padding: 1.65rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: var(--spring);
  overflow: hidden;
}

.session-clay-card:hover {
  transform: translateY(-5px);
  background: var(--clay-card-hover);
}

.session-badge-status {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.status-completed {
  background: #DEF7EC;
  color: #03543F;
  border: 1px solid #BCF0DA;
}

.status-ready {
  background: #EBF5FF;
  color: #1E40AF;
  border: 1px solid #BFDBFE;
  animation: pulse-ready 2s infinite;
}

@keyframes pulse-ready {
  0%, 100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4); }
  50% { box-shadow: 0 0 0 6px rgba(59, 130, 246, 0); }
}

.status-locked {
  background: #F1F5F9;
  color: #64748B;
  border: 1px solid #E2E8F0;
}

.session-number-pill {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.15rem;
  margin-bottom: 0.85rem;
  background: #E8EEF5;
  box-shadow: 3px 3px 8px #cbd7e6, -3px -3px 8px #ffffff, var(--shadow-inset);
  color: var(--primary);
}

.session-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.35rem;
  letter-spacing: -0.02em;
}

.session-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.45;
}

.session-metrics {
  background: #E8EEF5;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-inset);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  margin-bottom: 1rem;
}

.session-metrics-lbl {
  color: var(--text-muted);
  font-weight: 600;
}

.session-metrics-val {
  font-weight: 800;
  color: var(--text-main);
}

.session-timer-box {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  background: #E2E8F0;
  box-shadow: var(--shadow-inset);
  margin-bottom: 0.85rem;
}

/* ==========================================================================
   GAME HUD & LOOP VIEW
   ========================================================================== */

.game-hud {
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
  margin-bottom: 1.5rem;
}

.game-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

.hud-pill {
  background: var(--clay-card);
  border-radius: var(--radius-pill);
  padding: 0.45rem 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.84rem;
  font-weight: 700;
  box-shadow: var(--shadow-clay-sm);
  border: 1px solid var(--clay-border);
}

.hud-pill-highlight {
  color: var(--primary-dark);
  background: #EFF6FF;
  border-color: #BFDBFE;
}

/* Dynamic Timer Progress Bar */
.timer-container {
  width: 100%;
  height: 20px;
  background: #d8e2ee;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-inset);
  padding: 3px;
  position: relative;
  overflow: hidden;
}

.timer-bar {
  height: 100%;
  width: 100%;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, #10B981, #059669);
  transition: width 0.1s linear, background 0.3s ease;
  box-shadow: 2px 2px 5px rgba(16, 185, 129, 0.4), inset 1px 1px 2px rgba(255, 255, 255, 0.7);
}

.timer-bar.warning {
  background: linear-gradient(90deg, #F59E0B, #D97706);
  box-shadow: 2px 2px 5px rgba(245, 158, 11, 0.4);
}

.timer-bar.critical {
  background: linear-gradient(90deg, #EF4444, #DC2626);
  box-shadow: 2px 2px 5px rgba(239, 68, 68, 0.4);
  animation: pulse-danger 0.5s infinite alternate;
}

@keyframes pulse-danger {
  0% { opacity: 0.85; }
  100% { opacity: 1; transform: scaleY(1.05); }
}

.timer-counter-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 0.74rem;
  font-weight: 800;
  color: #1E293B;
  letter-spacing: 0.05em;
  pointer-events: none;
}

/* Question Area */
.question-clay-box {
  background: var(--clay-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--clay-border);
  box-shadow: var(--shadow-clay);
  padding: 2rem;
  margin-bottom: 1.5rem;
  min-height: 150px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.difficulty-tag {
  align-self: flex-start;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.difficulty-tag.easy {
  background: #DEF7EC;
  color: #03543F;
  border: 1px solid #BCF0DA;
}

.difficulty-tag.medium {
  background: #FEF08A;
  color: #713F12;
  border: 1px solid #FDE047;
}

.difficulty-tag.hard {
  background: #FEE2E2;
  color: #991B1B;
  border: 1px solid #FECACA;
}

.question-text {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.45;
  letter-spacing: -0.02em;
}

/* Options Grid */
.options-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .options-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.option-clay-btn {
  background: var(--clay-card);
  border: 1.5px solid var(--clay-border);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.35rem;
  box-shadow: var(--shadow-clay-sm);
  display: flex;
  align-items: center;
  gap: 0.95rem;
  cursor: pointer;
  transition: var(--spring);
  text-align: left;
  user-select: none;
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-main);
  outline: none;
}

.option-clay-btn:hover:not(:disabled) {
  transform: translateY(-3px);
  border-color: var(--primary-light);
  background: var(--clay-card-hover);
  box-shadow: 8px 12px 22px #cbd7e6, -6px -6px 18px #ffffff;
}

.option-clay-btn:active:not(:disabled) {
  transform: translateY(2px) scale(0.98);
  box-shadow: var(--shadow-inset-active);
}

.option-letter-badge {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: #E8EEF5;
  box-shadow: var(--shadow-inset);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: var(--smooth);
}

/* Answer Selected States */
.option-clay-btn.correct {
  background: linear-gradient(135deg, #10B981, #059669) !important;
  color: #ffffff !important;
  border-color: #059669 !important;
  box-shadow: 6px 8px 20px rgba(16, 185, 129, 0.4), inset 2px 2px 4px rgba(255, 255, 255, 0.6) !important;
  transform: scale(1.02);
}

.option-clay-btn.correct .option-letter-badge {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
  box-shadow: none;
}

.option-clay-btn.wrong {
  background: linear-gradient(135deg, #EF4444, #DC2626) !important;
  color: #ffffff !important;
  border-color: #DC2626 !important;
  box-shadow: 6px 8px 20px rgba(239, 68, 68, 0.4), inset 2px 2px 4px rgba(255, 255, 255, 0.6) !important;
  animation: shake 0.4s ease-in-out;
}

.option-clay-btn.wrong .option-letter-badge {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
  box-shadow: none;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

/* ==========================================================================
   RESULTS VIEW & CELEBRATION
   ========================================================================== */

.result-card {
  text-align: center;
  padding: 2.75rem 2rem;
}

.trophy-clay-icon {
  width: 88px;
  height: 88px;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  background: linear-gradient(135deg, #FBBF24, #F59E0B);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 8px 12px 24px rgba(245, 158, 11, 0.4), -8px -8px 20px #ffffff, inset 2px 2px 4px rgba(255, 255, 255, 0.8);
  animation: bounce-in 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes bounce-in {
  0% { transform: scale(0.3); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.score-display-huge {
  font-size: 3.4rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--primary-dark);
  line-height: 1;
  margin: 0.5rem 0 0.25rem;
}

.score-label-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 2rem;
}

.stats-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-item {
  background: #E8EEF5;
  border-radius: var(--radius-md);
  padding: 1.15rem 0.75rem;
  box-shadow: var(--shadow-inset);
}

.stat-item-val {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.stat-item-lbl {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.sync-status-box {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.55rem 1.35rem;
  border-radius: var(--radius-pill);
  margin-bottom: 1.75rem;
}

.sync-pending {
  background: #FEF3C7;
  color: #92400E;
  border: 1px solid #FDE68A;
}

.sync-success {
  background: #D1FAE5;
  color: #065F46;
  border: 1px solid #A7F3D0;
}

.sync-error {
  background: #FEE2E2;
  color: #991B1B;
  border: 1px solid #FECACA;
}

/* ==========================================================================
   ANTI-CHEAT MODAL
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(30, 41, 59, 0.55);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1.25rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.clay-modal {
  background: var(--clay-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--clay-border);
  box-shadow: var(--shadow-clay-lg);
  padding: 2.25rem 2rem;
  max-width: 440px;
  width: 100%;
  text-align: center;
  transform: scale(0.9);
  transition: var(--spring);
}

.modal-backdrop.active .clay-modal {
  transform: scale(1);
}

.modal-icon-badge {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, #EF4444, #DC2626);
  margin: 0 auto 1.35rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 6px 8px 20px rgba(239, 68, 68, 0.4), inset 2px 2px 4px rgba(255, 255, 255, 0.6);
}

/* Live Status Dot Indicator */
.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10B981;
  display: inline-block;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: live-pulse 1.8s infinite;
}

@keyframes live-pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Flame animation for streak */
.ui-icon-flame {
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

#hud-streak-pill.on-fire .ui-icon-flame {
  animation: flame-burn 0.8s infinite alternate ease-in-out;
}

@keyframes flame-burn {
  0% { transform: scale(1) rotate(-3deg); filter: drop-shadow(0 0 3px rgba(245, 158, 11, 0.4)); }
  100% { transform: scale(1.18) rotate(4deg); filter: drop-shadow(0 0 8px rgba(245, 158, 11, 0.8)); }
}

/* Result Trophy SVG Emblem */
.result-trophy-emblem {
  width: 88px;
  height: 88px;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  background: linear-gradient(135deg, #FBBF24, #F59E0B);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 8px 12px 24px rgba(245, 158, 11, 0.4), -8px -8px 20px #ffffff, inset 2px 2px 4px rgba(255, 255, 255, 0.8);
  animation: bounce-in 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Admin Brand & Auth styling */
.brand-logo-admin {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, #EF4444 0%, #8B5CF6 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 4px 6px 14px rgba(239, 68, 68, 0.35), inset 2px 2px 3px rgba(255, 255, 255, 0.8);
  transition: var(--spring);
}

.brand-logo-admin:hover {
  transform: rotate(-8deg) scale(1.05);
}

.auth-icon-circle {
  width: 72px;
  height: 72px;
  margin: 0 auto 1.25rem;
  border-radius: 50%;
  background: #E8EEF5;
  box-shadow: var(--shadow-clay-sm), var(--shadow-inset);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

/* Rank Badges - Modern Metallic Elegance */
.rank-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  padding: 0 6px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 800;
  background: #DCE5EE;
  color: var(--text-muted);
  box-shadow: inset 1px 1px 2px rgba(255, 255, 255, 0.9), inset -1px -1px 2px rgba(0, 0, 0, 0.05);
}

.rank-1 {
  background: linear-gradient(135deg, #FBBF24 0%, #D97706 100%);
  color: #ffffff !important;
  box-shadow: 0 4px 10px rgba(217, 119, 6, 0.4), inset 1.5px 1.5px 2px rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.rank-2 {
  background: linear-gradient(135deg, #94A3B8 0%, #64748B 100%);
  color: #ffffff !important;
  box-shadow: 0 4px 10px rgba(100, 116, 139, 0.35), inset 1.5px 1.5px 2px rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.rank-3 {
  background: linear-gradient(135deg, #F97316 0%, #C2410C 100%);
  color: #ffffff !important;
  box-shadow: 0 4px 10px rgba(194, 65, 12, 0.35), inset 1.5px 1.5px 2px rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.35);
}

/* Responsive Rules */
@media (max-width: 640px) {
  #app {
    padding: 1rem 0.85rem;
  }
  
  .clay-card {
    padding: 1.5rem;
  }

  .title-xl {
    font-size: 1.5rem;
  }

  .prize-banner {
    flex-direction: column;
    text-align: center;
    padding: 1.5rem;
  }

  .stats-summary-grid {
    grid-template-columns: 1fr;
  }
}