* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #1b1f2d 0%, #0b0d14 55%, #050607 100%);
  color: #edf2ff;
}

.platformer-shell {
  width: min(100%, 1200px);
  padding: 24px;
  margin: 0 auto;
  display: grid;
  gap: 24px;
}

.hero-panel {
  padding: 22px 24px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-panel h1 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  margin-bottom: 12px;
}

.hero-panel p {
  max-width: 760px;
  line-height: 1.7;
  color: #cbd5e1;
}

.room-panel {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr 1fr;
}

.room-box {
  padding: 22px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.room-box h2 {
  margin: 0 0 16px;
  font-size: 1.1rem;
}

.room-box input,
.room-box select {
  width: 100%;
  margin-bottom: 12px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  color: #edf2ff;
}

.room-box button {
  width: 100%;
  padding: 14px 16px;
  border: none;
  border-radius: 16px;
  background: linear-gradient(135deg, #5b7bff, #0ea5e9);
  color: #0b1220;
  font-weight: 700;
  cursor: pointer;
}

.room-box .room-list {
  min-height: 210px;
  display: grid;
  gap: 12px;
}

.room-card {
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.room-card .room-title {
  font-weight: 700;
  color: #edf2ff;
}

.room-card .room-meta {
  font-size: 0.94rem;
  color: #cbd5e1;
  margin-top: 6px;
}

.room-card button {
  margin-top: 12px;
  width: 100%;
  padding: 12px 14px;
  border: none;
  border-radius: 14px;
  background: #10b981;
  color: #081c15;
  cursor: pointer;
}

.room-status {
  padding: 18px 20px;
  border-radius: 20px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.18);
  color: #d1fae5;
}

.room-status.hidden {
  display: none;
}

.game-panel {
  display: grid;
  gap: 16px;
}

.game-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 18px 22px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.room-label,
.room-meta {
  color: #e2e8f0;
  margin-bottom: 6px;
}

.toolbar-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.toolbar-actions button {
  padding: 12px 18px;
  border: none;
  border-radius: 16px;
  cursor: pointer;
  font-weight: 700;
}

.toolbar-actions .secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #e2e8f0;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

#startGameBtn {
  background: linear-gradient(135deg, #f97316, #ec4899);
  color: #fff;
}

.status-panel {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.status-text {
  padding: 12px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #cbd5e1;
}

.canvas-wrap {
  border-radius: 28px;
  overflow: hidden;
  background: #05070c;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

canvas {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  background: #08111f;
}

.score-panel {
  padding: 18px 22px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.score-header {
  color: #cbd5e1;
  margin-bottom: 12px;
  font-weight: 700;
}

.scoreboard {
  display: grid;
  gap: 10px;
}

.score-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  color: #e2e8f0;
}

.controls-hint {
  padding: 14px 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #cbd5e1;
}

@media (max-width: 900px) {
  .room-panel {
    grid-template-columns: 1fr;
  }

  .game-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
}