/* Quiz Battle — Figma-quality dark theme */

/* Custom scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #1a1a2e; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #5b5ef4, #ec4899);
  border-radius: 50px;
}
::-webkit-scrollbar-thumb:hover { background: linear-gradient(180deg, #7c3aed, #f72585); }

/* ===== LOBBY ===== */
.qb-lobby {
  padding: 3rem 2rem; text-align: center;
  background: linear-gradient(145deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  min-height: 90vh; color: white;
  position: relative; overflow: hidden;
}
/* Subtle orb backgrounds */
.qb-lobby::before {
  content: ''; position: absolute; top: -120px; left: -80px;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(91,94,244,0.15) 0%, transparent 70%);
  pointer-events: none; animation: orbDrift 12s ease-in-out infinite alternate;
}
.qb-lobby::after {
  content: ''; position: absolute; bottom: -100px; right: -60px;
  width: 350px; height: 350px; border-radius: 50%;
  background: radial-gradient(circle, rgba(236,72,153,0.12) 0%, transparent 70%);
  pointer-events: none; animation: orbDrift 15s ease-in-out infinite alternate-reverse;
}
@keyframes orbDrift {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, -20px) scale(1.15); }
}

.qb-lobby-inner { max-width: 700px; margin: 0 auto; position: relative; z-index: 1; }

.qb-logo {
  font-size: 4rem; margin-bottom: 1rem;
  animation: float 3s ease-in-out infinite;
  filter: drop-shadow(0 4px 20px rgba(91,94,244,0.3));
}
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }

.qb-lobby h1 { font-size: 2.5rem; font-weight: 900; letter-spacing: -0.5px; }
.qb-lobby h1 .highlight {
  background: linear-gradient(135deg, #f72585, #5b5ef4);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.qb-lobby > p { color: #94a3b8; margin-bottom: 2rem; }

/* ===== MODE CARDS ===== */
.qb-modes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 2rem; }

.qb-mode-card {
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border: 2px solid rgba(255,255,255,0.08);
  border-radius: 20px; padding: 1.5rem;
  cursor: pointer; position: relative; overflow: hidden;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
/* Animated neon-glow border */
.qb-mode-card::before {
  content: ''; position: absolute; inset: -2px;
  border-radius: 22px; padding: 2px;
  background: linear-gradient(135deg, #5b5ef4, #7c3aed, #ec4899, #5b5ef4);
  background-size: 300% 300%;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
  animation: borderGlow 4s ease infinite;
}
@keyframes borderGlow {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
/* Top accent bar */
.qb-mode-card::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, #5b5ef4, #ec4899);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.qb-mode-card:hover::before { opacity: 1; }
.qb-mode-card:hover::after { transform: scaleX(1); }
.qb-mode-card:hover {
  border-color: transparent;
  transform: translateY(-5px);
  background: rgba(91,94,244,0.08);
  box-shadow: 0 12px 40px rgba(91,94,244,0.2), 0 0 60px rgba(91,94,244,0.08);
}

.qb-mode-icon {
  font-size: 2.5rem; margin-bottom: 0.5rem;
  filter: drop-shadow(0 2px 8px rgba(91,94,244,0.3));
}
.qb-mode-card h3 { font-weight: 900; font-size: 1.05rem; margin-bottom: 0.3rem; }
.qb-mode-card p { font-size: 0.8rem; color: #94a3b8; }

.qb-coming-soon {
  position: absolute; top: 10px; right: 10px;
  background: linear-gradient(135deg, #f72585, #ec4899);
  color: white; font-size: 0.65rem; font-weight: 800;
  padding: 0.2rem 0.5rem; border-radius: 50px;
  box-shadow: 0 2px 12px rgba(247,37,133,0.4);
  animation: comingSoonPulse 2s ease-in-out infinite;
}
@keyframes comingSoonPulse {
  0%, 100% { box-shadow: 0 2px 12px rgba(247,37,133,0.4); }
  50% { box-shadow: 0 2px 20px rgba(247,37,133,0.6); }
}

/* ===== LEADERBOARD ===== */
.qb-leaderboard {
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border-radius: 20px; padding: 1.5rem;
  border: 2px solid rgba(255,255,255,0.08);
  text-align: left;
  position: relative; overflow: hidden;
}
.qb-leaderboard::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, #5b5ef4, #7c3aed, #ec4899);
}
.qb-leaderboard h3 {
  font-weight: 900; font-size: 1.1rem; margin-bottom: 1rem; text-align: center;
  background: linear-gradient(135deg, #5b5ef4, #7c3aed, #ec4899);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.qb-lb-list { display: flex; flex-direction: column; gap: 0.5rem; }

.qb-lb-item {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.6rem 0.8rem; border-radius: 12px;
  background: rgba(255,255,255,0.03);
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.qb-lb-item:hover {
  background: rgba(255,255,255,0.06);
  transform: translateX(4px);
}
.qb-lb-item.you {
  background: rgba(91,94,244,0.15);
  border: 1.5px solid rgba(91,94,244,0.3);
  box-shadow: 0 4px 20px rgba(91,94,244,0.1);
}

.qb-lb-rank {
  width: 28px; height: 28px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 0.82rem;
  background: rgba(255,255,255,0.08);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.qb-lb-item:hover .qb-lb-rank { transform: scale(1.15); }

.qb-lb-rank.gold {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  color: #1a1a2e;
  box-shadow: 0 2px 12px rgba(251,191,36,0.4);
}
.qb-lb-rank.silver {
  background: linear-gradient(135deg, #cbd5e1, #94a3b8);
  color: #1a1a2e;
  box-shadow: 0 2px 12px rgba(148,163,184,0.3);
}
.qb-lb-rank.bronze {
  background: linear-gradient(135deg, #cd7f32, #b8690e);
  color: white;
  box-shadow: 0 2px 12px rgba(205,127,50,0.3);
}

.qb-lb-name { flex: 1; font-weight: 700; font-size: 0.9rem; }
.qb-lb-score {
  font-weight: 900; font-size: 0.9rem;
  background: linear-gradient(135deg, #5b5ef4, #ec4899);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

/* ===== BATTLE SCREEN ===== */
.qb-battle { max-width: 600px; margin: 0 auto; padding: 2rem; }
.qb-battle-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 2rem; }

.qb-player { flex: 1; text-align: center; }
.qb-avatar {
  font-size: 3rem; margin-bottom: 0.3rem;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.2));
}
.qb-pname { font-weight: 800; font-size: 0.9rem; }
.qb-pscore {
  font-weight: 900; font-size: 2rem;
  background: linear-gradient(135deg, #5b5ef4, #ec4899);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

/* Pulsing VS indicator */
.qb-vs { text-align: center; min-width: 80px; position: relative; }
.qb-round { font-weight: 800; font-size: 0.8rem; color: #64748b; margin-bottom: 0.3rem; }

.qb-battle-timer {
  width: 60px; height: 60px; border-radius: 50%;
  background: linear-gradient(135deg, #5b5ef4, #7209b7);
  color: white; font-weight: 900; font-size: 1.5rem;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto; position: relative;
  box-shadow: 0 0 20px rgba(91,94,244,0.4), 0 0 40px rgba(91,94,244,0.1);
  animation: timerGlow 2s ease-in-out infinite;
}
@keyframes timerGlow {
  0%, 100% { box-shadow: 0 0 20px rgba(91,94,244,0.4), 0 0 40px rgba(91,94,244,0.1); }
  50% { box-shadow: 0 0 30px rgba(91,94,244,0.6), 0 0 60px rgba(91,94,244,0.15); }
}
.qb-battle-timer::before {
  content: ''; position: absolute; inset: -4px;
  border-radius: 50%;
  background: linear-gradient(135deg, #5b5ef4, #7c3aed, #ec4899);
  z-index: -1; opacity: 0.5;
  animation: timerRingSpin 3s linear infinite;
}
@keyframes timerRingSpin {
  to { transform: rotate(360deg); }
}
.qb-battle-timer.low {
  background: linear-gradient(135deg, #f97316, #dc2626);
  animation: timerPulse 0.5s infinite;
  box-shadow: 0 0 20px rgba(220,38,38,0.5), 0 0 40px rgba(220,38,38,0.15);
}
.qb-battle-timer.low::before {
  background: linear-gradient(135deg, #f97316, #dc2626, #f97316);
}
@keyframes timerPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}

/* Glass question area */
.qb-question-area {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border-radius: 24px; padding: 2rem;
  box-shadow: 0 8px 32px rgba(91,94,244,0.08);
  border: 2px solid rgba(91,94,244,0.1);
  margin-bottom: 1rem; position: relative; overflow: hidden;
}
.qb-question-area::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, #5b5ef4, #7c3aed, #ec4899);
}

.qb-q-text {
  font-weight: 800; font-size: 1.1rem; line-height: 1.7;
  text-align: center; margin-bottom: 1.5rem;
}

.qb-options { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }

.qb-opt {
  padding: 1rem; border: 2px solid #e8eaff; border-radius: 14px;
  font-weight: 700; font-size: 0.95rem; cursor: pointer;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  text-align: center; background: white; position: relative; overflow: hidden;
}
.qb-opt::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, #5b5ef4, #ec4899);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.qb-opt:hover {
  border-color: #5b5ef4; background: #f0f2ff;
  transform: scale(1.03) translateY(-2px);
  box-shadow: 0 8px 24px rgba(91,94,244,0.12);
}
.qb-opt:hover::after { transform: scaleX(1); }
.qb-opt.selected { border-color: #5b5ef4; background: #eef0ff; }
.qb-opt.correct {
  border-color: #22c55e; background: #f0fdf4;
  box-shadow: 0 4px 20px rgba(34,197,94,0.15);
}
.qb-opt.wrong {
  border-color: #dc2626; background: #fef2f2;
  box-shadow: 0 4px 20px rgba(220,38,38,0.1);
  animation: wrongShake 0.4s ease;
}
@keyframes wrongShake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

.qb-feedback {
  text-align: center; padding: 1rem; border-radius: 16px;
  font-weight: 800; font-size: 1rem;
  animation: popIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes popIn {
  0% { opacity: 0; transform: scale(0.8) translateY(10px); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}
.qb-feedback.correct {
  background: #f0fdf4; color: #16a34a;
  border: 2px solid #86efac;
  box-shadow: 0 4px 20px rgba(34,197,94,0.1);
}
.qb-feedback.wrong {
  background: #fef2f2; color: #dc2626;
  border: 2px solid #fecaca;
  box-shadow: 0 4px 20px rgba(220,38,38,0.08);
}

/* ===== RESULTS ===== */
.qb-results { padding: 2rem; text-align: center; }
.qb-results-inner {
  max-width: 500px; margin: 0 auto;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border-radius: 24px; padding: 2rem;
  box-shadow: 0 12px 40px rgba(91,94,244,0.12);
  border: 2px solid rgba(91,94,244,0.08);
  position: relative; overflow: hidden;
  animation: resultSlideUp 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.qb-results-inner::before {
  content: ''; position: absolute; inset: -2px;
  border-radius: 26px; padding: 2px;
  background: linear-gradient(135deg, #5b5ef4, #7c3aed, #ec4899, #5b5ef4);
  background-size: 300% 300%;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: borderGlow 4s ease infinite;
}
@keyframes resultSlideUp {
  0% { opacity: 0; transform: translateY(30px) scale(0.95); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .qb-modes { grid-template-columns: 1fr; }
  .qb-options { grid-template-columns: 1fr; }
  .qb-battle-header { gap: 0.5rem; }
  .qb-avatar { font-size: 2rem; }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}