@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;600;700;800;900&family=Poppins:wght@400;500;600;700&display=swap');

:root {
  --bg: #050816;
  --card: rgba(14, 21, 48, 0.88);
  --cyan: #00eaff;
  --purple: #8b5cf6;
  --pink: #ff3cac;
  --green: #00f5a0;
  --red: #ff416c;
  --yellow: #ffd166;
  --text: #f4f7ff;
  --muted: #8792b0;
  --border: rgba(255,255,255,.1);
}

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

body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 20% 20%, #101c4a 0%, transparent 35%),
    radial-gradient(circle at 80% 80%, #251045 0%, transparent 35%),
    var(--bg);
  color: var(--text);
  font-family: Poppins, sans-serif;
  overflow-x: hidden;
}

.background {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .18;
}

.orb-1 {
  width: 300px;
  height: 300px;
  background: var(--cyan);
  top: -100px;
  left: -100px;
}

.orb-2 {
  width: 350px;
  height: 350px;
  background: var(--pink);
  right: -120px;
  bottom: -100px;
}

.screen {
  display: none;
  min-height: 100vh;
  width: 100%;
  position: relative;
  z-index: 1;
}

.screen.active {
  display: flex;
}

/* START */

#startScreen {
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 30px 15px;
}

.logo {
  font-family: Orbitron, sans-serif;
  font-size: clamp(2.2rem, 7vw, 4.8rem);
  font-weight: 900;
  letter-spacing: 4px;
  text-shadow: 0 0 25px rgba(0,234,255,.4);
}

.logo span {
  color: var(--cyan);
}

.tagline {
  color: var(--muted);
  letter-spacing: 5px;
  font-size: .75rem;
  margin: 5px 0 25px;
}

.start-card,
.result-card {
  width: min(650px, 94vw);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 35px;
  text-align: center;
  backdrop-filter: blur(20px);
  box-shadow: 0 25px 80px rgba(0,0,0,.4);
}

.brain-icon {
  font-size: 4rem;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  50% { transform: translateY(-10px); }
}

.start-card h1 {
  font-family: Orbitron, sans-serif;
  margin: 10px 0;
}

.start-card p {
  color: var(--muted);
}

#playerName {
  width: 100%;
  margin: 25px 0 18px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255,255,255,.05);
  color: white;
  outline: none;
  text-align: center;
  font-size: 1rem;
}

#playerName:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 20px rgba(0,234,255,.12);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}

.category {
  padding: 12px 6px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--text);
  border-radius: 10px;
  cursor: pointer;
  transition: .25s;
}

.category:hover,
.category.selected {
  border-color: var(--cyan);
  background: rgba(0,234,255,.1);
  transform: translateY(-2px);
}

.primary-btn {
  width: 100%;
  padding: 17px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(90deg, var(--cyan), #4776ff);
  color: #03101b;
  font-family: Orbitron, sans-serif;
  font-weight: 900;
  cursor: pointer;
  font-size: 1rem;
  transition: .25s;
  box-shadow: 0 8px 30px rgba(0,234,255,.18);
}

.primary-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 35px rgba(0,234,255,.3);
}

.best-score {
  margin-top: 20px;
  font-size: .8rem;
}

/* GAME */

#gameScreen {
  flex-direction: column;
}

.game-header {
  width: min(1100px, 94%);
  margin: 25px auto 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mini-logo {
  font-family: Orbitron, sans-serif;
  font-weight: 800;
  color: var(--cyan);
}

.stats {
  display: flex;
  gap: 25px;
}

.stat {
  text-align: center;
}

.stat small {
  display: block;
  color: var(--muted);
  font-size: .55rem;
  letter-spacing: 1px;
}

.stat strong {
  font-family: Orbitron, sans-serif;
  font-size: .95rem;
}

.quiz-container {
  width: min(900px, 94%);
  margin: 40px auto;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-family: Orbitron, sans-serif;
  font-size: .7rem;
}

.progress-bar {
  height: 5px;
  background: rgba(255,255,255,.08);
  border-radius: 20px;
  margin: 10px 0 30px;
  overflow: hidden;
}

#progress {
  width: 5%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  transition: width .4s;
}

.timer-container {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.timer-ring {
  width: 70px;
  height: 70px;
  display: grid;
  place-items: center;
  border: 4px solid var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 25px rgba(0,234,255,.25);
  font-family: Orbitron, sans-serif;
  font-size: 1.3rem;
  transition: .3s;
}

.timer-ring.danger {
  border-color: var(--red);
  color: var(--red);
  animation: pulse .6s infinite;
}

@keyframes pulse {
  50% { transform: scale(1.08); }
}

.question-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 25px;
  padding: 35px;
  position: relative;
}

.question-number {
  color: var(--cyan);
  font-family: Orbitron, sans-serif;
  font-weight: 800;
  margin-bottom: 12px;
}

.question-card h2 {
  font-size: clamp(1.15rem, 3vw, 1.7rem);
  line-height: 1.5;
  margin-bottom: 25px;
}

.answers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 13px;
}

.answer {
  padding: 17px;
  border: 1px solid var(--border);
  border-radius: 13px;
  background: rgba(255,255,255,.035);
  color: white;
  text-align: left;
  cursor: pointer;
  transition: .2s;
  font-size: .95rem;
}

.answer:hover:not(:disabled) {
  border-color: var(--cyan);
  background: rgba(0,234,255,.08);
  transform: translateY(-2px);
}

.answer.correct {
  background: rgba(0,245,160,.16);
  border-color: var(--green);
}

.answer.wrong {
  background: rgba(255,65,108,.16);
  border-color: var(--red);
}

.answer.removed {
  opacity: .18;
  pointer-events: none;
}

.answer:disabled {
  cursor: default;
}

.lifelines {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.power-btn {
  flex: 1;
  padding: 12px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: white;
  border-radius: 10px;
  cursor: pointer;
}

.power-btn:hover:not(:disabled) {
  border-color: var(--purple);
  background: rgba(139,92,246,.1);
}

.power-btn small {
  display: block;
  color: var(--muted);
  margin-top: 3px;
}

.power-btn:disabled {
  opacity: .3;
  cursor: not-allowed;
}

/* BOSS */

#bossScreen {
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 25px;
}

.boss-warning {
  color: var(--red);
  font-family: Orbitron, sans-serif;
  letter-spacing: 3px;
  animation: pulse .8s infinite;
}

.boss-icon {
  font-size: 5rem;
  margin: 15px;
}

#bossScreen h1 {
  font-family: Orbitron, sans-serif;
  color: #ff4b6e;
}

.boss-card {
  width: min(750px, 94vw);
  margin-top: 25px;
  padding: 30px;
  border: 1px solid rgba(255,65,108,.35);
  background: rgba(40,8,25,.8);
  border-radius: 25px;
  box-shadow: 0 0 50px rgba(255,65,108,.12);
}

#bossTimer {
  font-family: Orbitron, sans-serif;
  color: var(--red);
  font-size: 2rem;
  margin-bottom: 15px;
}

/* RESULTS */

#resultScreen {
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.result-emoji {
  font-size: 5rem;
}

.result-label {
  color: var(--cyan);
  letter-spacing: 3px;
  font-family: Orbitron, sans-serif;
  font-size: .7rem;
}

.result-card h1 {
  font-family: Orbitron, sans-serif;
  margin: 8px 0 20px;
}

.final-score {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 20px;
}

.final-score small {
  display: block;
  color: var(--muted);
}

.final-score strong {
  display: block;
  color: var(--cyan);
  font-family: Orbitron, sans-serif;
  font-size: 3rem;
  margin-top: 5px;
}

.result-stats {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 10px;
  margin: 20px 0;
}

.result-stats div {
  background: rgba(255,255,255,.04);
  padding: 15px;
  border-radius: 12px;
}

.result-stats span,
.result-stats small,
.result-stats strong {
  display: block;
}

.result-stats small {
  color: var(--muted);
  font-size: .7rem;
}

.result-stats strong {
  font-family: Orbitron, sans-serif;
}

.result-message {
  margin-bottom: 20px;
}

.secondary-btn {
  width: 100%;
  padding: 14px;
  margin-top: 10px;
  background: transparent;
  border: 1px solid var(--border);
  color: white;
  border-radius: 12px;
  cursor: pointer;
}

.secondary-btn:hover {
  border-color: var(--cyan);
}

/* TOAST */

.toast {
  position: fixed;
  left: 50%;
  bottom: 30px;
  transform: translate(-50%, 100px);
  background: #151d3d;
  border: 1px solid var(--cyan);
  padding: 13px 22px;
  border-radius: 30px;
  z-index: 20;
  opacity: 0;
  transition: .3s;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* MOBILE */

@media (max-width: 650px) {
  .start-card,
  .result-card,
  .question-card {
    padding: 23px;
  }

  .category-grid {
    grid-template-columns: 1fr 1fr;
  }

  .answers {
    grid-template-columns: 1fr;
  }

  .lifelines {
    flex-direction: column;
  }

  .game-header {
    align-items: flex-start;
  }

  .stats {
    gap: 10px;
  }

  .mini-logo {
    font-size: .7rem;
  }

  .stat strong {
    font-size: .7rem;
  }

  .result-stats {
    gap: 5px;
  }
}