:root {
  --bg-start: #0b132b;
  --bg-end: #1c2541;
  --card: #ffffff;
  --ink: #101828;
  --muted: #5f6c7b;
  --primary: #0ea5e9;
  --secondary: #f97316;
  --ai: #e11d48;
  --human: #059669;
  --error: #b91c1c;
  --radius: 16px;
  --shadow: 0 18px 36px rgba(10, 20, 30, 0.25);
  --space-1: clamp(0.5rem, 1.2vw, 0.75rem);
  --space-2: clamp(0.75rem, 1.8vw, 1rem);
  --space-3: clamp(1rem, 2.6vw, 1.4rem);
  --space-4: clamp(1.25rem, 3.3vw, 1.8rem);
  --text-sm: clamp(0.86rem, 2.4vw, 0.95rem);
  --text-md: clamp(0.95rem, 2.8vw, 1.05rem);
  --text-lg: clamp(1.08rem, 3.8vw, 1.4rem);
  --text-xl: clamp(1.45rem, 5vw, 2.2rem);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 10%, #22d3ee 0%, transparent 28%),
    radial-gradient(circle at 85% 15%, #fb7185 0%, transparent 34%),
    linear-gradient(155deg, var(--bg-start), var(--bg-end));
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

h1,
h2,
h3,
h4 {
  font-family: "Avenir Next", "Trebuchet MS", sans-serif;
}

.screen {
  min-height: 100vh;
  padding: var(--space-3);
  display: grid;
  place-items: center;
}

.card {
  width: 100%;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: var(--space-3);
}

.entry-card {
  max-width: 560px;
}

.center-block {
  text-align: center;
}

.subtitle,
.muted,
small {
  color: var(--muted);
}

.stack {
  display: grid;
  gap: var(--space-1);
  margin: var(--space-2) 0;
}

label {
  font-size: var(--text-sm);
  font-weight: 700;
}

input {
  width: 100%;
  padding: 0.78rem 0.88rem;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  font-size: var(--text-md);
}

.entry-links {
  margin-top: var(--space-1);
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1rem;
}

.link-muted {
  color: #dbeafe;
  text-decoration: none;
  font-size: var(--text-sm);
}

.btn {
  border: 0;
  border-radius: 12px;
  padding: 0.8rem 1rem;
  font-size: var(--text-md);
  font-weight: 800;
  color: #fff;
  cursor: pointer;
}

.btn-primary {
  background: var(--primary);
}

.btn-secondary {
  background: var(--secondary);
}

.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.error {
  color: var(--error);
  min-height: 1.2em;
  margin-top: var(--space-1);
}

.cluster {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.between {
  justify-content: space-between;
}

.gap-sm {
  gap: 0.7rem;
}

.compact {
  padding: 0.85rem 1rem;
}

.lobby-card,
.results-card {
  max-width: 860px;
}

.room-code {
  font-size: clamp(2rem, 10vw, 3.7rem);
  letter-spacing: 0.15em;
  font-weight: 900;
}

.status-pill {
  margin-top: var(--space-1);
  background: #e0f2fe;
  color: #0c4a6e;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  font-size: var(--text-sm);
  font-weight: 800;
}

.lobby-section {
  margin-top: var(--space-2);
}

.players-list {
  list-style: none;
  padding: 0;
  margin: 0.8rem 0 1.1rem;
  display: grid;
  gap: 0.55rem;
}

.player-item {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 0.7rem 0.85rem;
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: var(--text-sm);
}

.player-item.offline {
  opacity: 0.55;
}

.play-layout,
.final-layout {
  width: min(100%, 1120px);
  display: grid;
  gap: var(--space-2);
}

.timer {
  font-size: var(--text-lg);
  font-weight: 900;
  color: #0f766e;
}

.video-card {
  min-height: 260px;
}

.video-container {
  margin-top: var(--space-1);
  width: 100%;
  max-width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 12px;
  background: #0f172a;
}

.video-container iframe,
.video-container video {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.answers-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
}

.btn-answer {
  width: 100%;
  min-height: 92px;
  border: 0;
  border-radius: var(--radius);
  color: #fff;
  font-size: clamp(1.25rem, 6vw, 1.9rem);
  font-weight: 900;
  cursor: pointer;
  transition: transform 0.16s ease, opacity 0.16s ease;
}

.btn-answer:hover {
  transform: translateY(-2px);
}

.btn-answer:disabled {
  opacity: 0.62;
  cursor: not-allowed;
}

.btn-ai {
  background: linear-gradient(135deg, #fb7185, var(--ai));
}

.btn-human {
  background: linear-gradient(135deg, #34d399, var(--human));
}

.highlight {
  margin-top: var(--space-1);
  font-size: var(--text-lg);
  font-weight: 900;
}

.stats-grid {
  margin: var(--space-2) 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
}

.stat-box {
  border-radius: 12px;
  background: #eff6ff;
  padding: 0.8rem;
  display: grid;
  gap: 0.25rem;
}

.stat-box strong {
  font-size: var(--text-lg);
}

.podium {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.7rem;
}

.podium-card {
  border-radius: var(--radius);
  border: 2px solid #e2e8f0;
  background: #fff;
  padding: 0.95rem;
  text-align: center;
  animation: bounce-in 0.65s both;
}

.podium-card.empty {
  min-height: 90px;
  opacity: 0.2;
}

.podium-card.first {
  border-color: #f59e0b;
}

.podium-card.second {
  border-color: #94a3b8;
}

.podium-card.third {
  border-color: #fb7185;
}

.ranking-cards {
  display: grid;
  gap: 0.6rem;
}

.rank-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 0.72rem 0.88rem;
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
}

.rank-left,
.rank-right {
  display: grid;
  gap: 0.15rem;
}

.table-wrap {
  margin-top: 0.65rem;
}

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table {
  min-width: 560px;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  overflow: hidden;
}

.table-row {
  display: grid;
  grid-template-columns: 0.8fr 2fr 1fr 1.1fr;
  gap: 0.5rem;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid #e2e8f0;
  align-items: center;
  font-size: var(--text-sm);
}

.table-head {
  font-weight: 900;
  background: #f1f5f9;
}

.table-row.disconnected {
  opacity: 0.5;
}

.slide-in {
  animation: slide-in 0.5s ease both;
}

@keyframes bounce-in {
  0% {
    transform: translateY(34px) scale(0.72);
    opacity: 0;
  }
  60% {
    transform: translateY(-6px) scale(1.03);
    opacity: 1;
  }
  100% {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

@keyframes slide-in {
  from {
    transform: translateX(-14px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@media (min-width: 768px) {
  .screen {
    padding: var(--space-4);
  }

  .card {
    padding: var(--space-4);
  }

  .status-pill {
    margin-top: 0;
  }

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

  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .podium {
    grid-template-columns: repeat(3, 1fr);
    align-items: end;
  }

  .podium-card.first {
    transform: translateY(-14px);
  }
}

@media (min-width: 1024px) {
  .play-layout,
  .final-layout {
    gap: var(--space-3);
  }

  .video-card {
    min-height: 330px;
  }

  .rank-card {
    padding: 0.9rem 1rem;
  }
}