.home-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-accent) 50%, var(--bg-deep) 100%);
  padding: 20px;
  overflow: hidden;
}

.home-stars-decoration {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background:
    radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1px 1px at 30% 60%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1.5px 1.5px at 50% 15%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 70% 40%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1.5px 1.5px at 85% 70%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 20% 80%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 60% 85%, rgba(255,255,255,0.3), transparent),
    radial-gradient(2px 2px at 45% 45%, rgba(255,215,100,0.4), transparent),
    radial-gradient(1.5px 1.5px at 90% 15%, rgba(150,200,255,0.5), transparent);
}

.home-title {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  animation: title-appear 1s ease-out;
}

.home-title h1 {
  font-size: 48px;
  font-weight: 300;
  letter-spacing: 12px;
  background: linear-gradient(135deg, var(--gold-light), var(--gold), var(--gold-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  filter: drop-shadow(0 0 20px rgba(255, 215, 100, 0.3));
}

.home-title .subtitle {
  font-size: 14px;
  letter-spacing: 6px;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.title-star {
  font-size: 20px;
  color: var(--gold);
  animation: star-twinkle 2s ease-in-out infinite;
  text-shadow: 0 0 10px rgba(255, 215, 100, 0.5);
}

.title-star:last-child {
  animation-delay: 1s;
}

.home-desc {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  letter-spacing: 2px;
  animation: desc-appear 1s ease-out 0.3s both;
}

.home-buttons {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
  animation: buttons-appear 0.8s ease-out 0.5s both;
}

.btn-primary,
.btn-immersive {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 14px 36px;
}

.mode-emoji {
  font-size: 22px;
}

.mode-sub {
  font-size: 11px;
  opacity: 0.6;
}

.btn-immersive {
  background: linear-gradient(135deg, rgba(150, 200, 255, 0.15), rgba(100, 150, 255, 0.1));
  border-color: rgba(150, 200, 255, 0.3);
  color: var(--blue-light);
}

.btn-immersive:hover {
  background: linear-gradient(135deg, rgba(150, 200, 255, 0.25), rgba(100, 150, 255, 0.2));
  border-color: rgba(150, 200, 255, 0.5);
  box-shadow: 0 6px 25px rgba(100, 150, 255, 0.15);
}

.home-footer {
  position: absolute;
  bottom: 30px;
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 1px;
  animation: footer-appear 1s ease-out 1s both;
}

.level-select-page {
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-accent) 50%, var(--bg-deep) 100%);
  padding: 20px;
  overflow-y: auto;
}

.level-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-shrink: 0;
}

.level-title {
  font-size: 22px;
  font-weight: 300;
  letter-spacing: 4px;
  color: var(--gold-light);
}

.mode-toggle {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.mode-tab {
  padding: 6px 16px;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: var(--font-main);
}

.mode-tab.active {
  background: rgba(255, 215, 100, 0.1);
  border-color: rgba(255, 215, 100, 0.3);
  color: var(--gold-light);
}

.mode-tab:hover:not(.active) {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
}

.season-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-bottom: 20px;
}

.season-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.season-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.season-icon {
  font-size: 24px;
}

.season-name {
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 3px;
  color: var(--text-primary);
}

.constellation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
}

.constellation-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 16px 10px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all 0.3s ease;
  cursor: default;
}

.constellation-card.unlocked {
  cursor: pointer;
  border-color: rgba(255, 255, 255, 0.1);
}

.constellation-card.unlocked:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 215, 100, 0.3);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.constellation-card.completed {
  border-color: rgba(255, 215, 100, 0.2);
  background: rgba(255, 215, 100, 0.05);
}

.constellation-card.locked {
  opacity: 0.4;
}

.card-icon {
  font-size: 28px;
  line-height: 1;
}

.card-name {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: 1px;
}

.card-difficulty {
  font-size: 11px;
  color: var(--text-muted);
}

.card-stars {
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 2px;
}

.gameplay-page {
  position: relative;
  background: var(--bg-dark);
}

.canvas-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.game-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.game-ui-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 16px;
}

.game-ui-overlay > * {
  pointer-events: auto;
}

.game-top-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  flex-shrink: 0;
}

.game-constellation-info {
  flex: 1;
  display: flex;
  align-items: baseline;
  gap: 6px;
  overflow: hidden;
}

.name-cn {
  font-size: 18px;
  font-weight: 400;
  color: var(--gold-light);
  letter-spacing: 2px;
  white-space: nowrap;
}

.name-en {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 1px;
  white-space: nowrap;
}

.name-sep {
  color: var(--text-muted);
  font-size: 12px;
}

.name-desc {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.game-timer {
  font-size: 16px;
  color: var(--blue-light);
  font-variant-numeric: tabular-nums;
  letter-spacing: 1px;
}

.game-bottom-bar {
  display: flex;
  justify-content: center;
  gap: 12px;
  padding: 8px 0;
}

.hint-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 12px 24px;
  background: rgba(150, 220, 255, 0.15);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(150, 220, 255, 0.3);
  border-radius: var(--radius-md);
  color: var(--blue-light);
  font-size: 15px;
  letter-spacing: 1px;
  pointer-events: none;
  z-index: 10;
}

.error-toast {
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 10px 20px;
  background: rgba(255, 80, 80, 0.15);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 80, 80, 0.3);
  border-radius: var(--radius-md);
  color: #ff8080;
  font-size: 14px;
  pointer-events: none;
  z-index: 10;
}

.result-page {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-accent) 50%, var(--bg-deep) 100%);
  padding: 20px;
  overflow-y: auto;
}

.result-card {
  max-width: 420px;
  width: 100%;
  padding: 32px 28px;
  text-align: center;
  animation: result-appear 0.6s ease-out;
}

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

.result-constellation-name {
  font-size: 28px;
  font-weight: 300;
  color: var(--gold-light);
  letter-spacing: 4px;
  margin-bottom: 4px;
}

.result-constellation-en {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 2px;
}

.result-stars {
  font-size: 36px;
  margin-bottom: 20px;
  letter-spacing: 8px;
}

.result-star {
  display: inline-block;
  color: var(--text-muted);
  animation: star-pop 0.4s ease-out both;
}

.result-star.filled {
  color: var(--gold);
  text-shadow: 0 0 15px rgba(255, 215, 100, 0.5);
}

.result-score {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 10px;
  margin-bottom: 20px;
}

.score-label {
  font-size: 14px;
  color: var(--text-secondary);
}

.score-value {
  font-size: 32px;
  font-weight: 300;
  color: var(--gold-light);
  letter-spacing: 2px;
}

.result-stats {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 20px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stat-icon {
  font-size: 18px;
}

.stat-label {
  font-size: 11px;
  color: var(--text-muted);
}

.stat-value {
  font-size: 14px;
  color: var(--text-primary);
}

.result-story {
  padding: 16px;
  margin-bottom: 20px;
  text-align: left;
}

.result-story h3 {
  font-size: 14px;
  font-weight: 400;
  color: var(--gold-light);
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.result-story p {
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.result-achievements {
  margin-bottom: 20px;
  padding: 12px;
  background: rgba(255, 215, 100, 0.05);
  border: 1px solid rgba(255, 215, 100, 0.15);
  border-radius: var(--radius-md);
}

.result-achievements h3 {
  font-size: 14px;
  color: var(--gold);
  margin-bottom: 10px;
}

.achievement-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  font-size: 13px;
}

.ach-icon {
  font-size: 18px;
}

.ach-name {
  color: var(--gold-light);
  font-weight: 500;
}

.ach-desc {
  color: var(--text-secondary);
  font-size: 12px;
}

.result-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

@media (max-width: 480px) {
  .home-title h1 {
    font-size: 32px;
    letter-spacing: 8px;
  }

  .constellation-grid {
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 8px;
  }

  .constellation-card {
    padding: 12px 8px;
  }

  .card-icon {
    font-size: 22px;
  }

  .card-name {
    font-size: 12px;
  }

  .result-card {
    padding: 24px 20px;
  }

  .result-constellation-name {
    font-size: 22px;
  }

  .result-stars {
    font-size: 28px;
  }

  .game-bottom-bar {
    gap: 8px;
  }

  .btn-action {
    padding: 8px 12px;
  }
}

.immersive-page {
  position: relative;
  background: #0a0a2e;
}

.immersive-canvas-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.immersive-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.immersive-ui-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 16px;
}

.immersive-ui-overlay > * {
  pointer-events: auto;
}

.immersive-hint-panel {
  position: absolute;
  top: 70px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  max-width: 80%;
  pointer-events: none;
  transition: all 0.3s ease;
}

.immersive-hint-panel.hint-flash {
  border-color: rgba(150, 220, 255, 0.4);
  box-shadow: 0 0 20px rgba(150, 220, 255, 0.15);
}

.hint-icon {
  font-size: 18px;
  flex-shrink: 0;
}

.hint-text-immersive {
  font-size: 13px;
  color: var(--blue-light);
  letter-spacing: 0.5px;
  line-height: 1.5;
}

.immersive-error {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 30px;
  text-align: center;
}

.immersive-error h3 {
  color: var(--text-primary);
  margin-bottom: 10px;
}

.immersive-error p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.compass-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 300px;
  height: 300px;
  pointer-events: none;
}

.compass-n,
.compass-e,
.compass-s,
.compass-w {
  position: absolute;
  font-size: 14px;
  color: rgba(150, 200, 255, 0.5);
  letter-spacing: 2px;
  transition: all 0.3s ease;
  text-shadow: 0 0 10px rgba(150, 200, 255, 0.3);
}

.compass-n {
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
}

.compass-s {
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
}

.compass-e {
  right: -10px;
  top: 50%;
  transform: translateY(-50%);
}

.compass-w {
  left: -10px;
  top: 50%;
  transform: translateY(-50%);
}

.compass-active {
  color: rgba(150, 200, 255, 0.9);
  text-shadow: 0 0 15px rgba(150, 200, 255, 0.6);
}

.proximity-indicator {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  display: none;
}

.proximity-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60%;
  height: 60%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(150, 220, 255, 0.1), transparent 70%);
  transition: all 0.5s ease;
}

.star-card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(5, 5, 30, 0.5);
  z-index: 100;
  pointer-events: none;
}

.star-card {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 24px;
  padding: 28px 32px;
  max-width: 520px;
  border-radius: 16px;
  background: rgba(10, 10, 50, 0.85);
  border: 1px solid rgba(255, 215, 100, 0.3);
  box-shadow: 0 0 40px rgba(255, 215, 100, 0.15), 0 0 80px rgba(100, 150, 255, 0.1);
}

.star-card-constellation {
  flex-shrink: 0;
}

.star-card-canvas {
  border-radius: 12px;
  border: 1px solid rgba(255, 215, 100, 0.2);
  box-shadow: 0 0 20px rgba(255, 215, 100, 0.1);
}

.star-card-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.star-card-name {
  font-size: 24px;
  font-weight: 700;
  color: #ffd764;
  margin: 0;
  text-shadow: 0 0 10px rgba(255, 215, 100, 0.4);
}

.star-card-name-en {
  font-size: 14px;
  color: rgba(200, 220, 255, 0.6);
  margin: 0;
  font-style: italic;
}

.star-card-season {
  font-size: 13px;
  color: rgba(150, 200, 255, 0.7);
  margin: 0;
  padding: 4px 10px;
  background: rgba(100, 150, 255, 0.1);
  border-radius: 8px;
  display: inline-block;
  width: fit-content;
}

.star-card-story {
  font-size: 13px;
  color: rgba(200, 220, 255, 0.8);
  margin: 0;
  line-height: 1.6;
  max-height: 120px;
  overflow-y: auto;
}

@media (max-width: 600px) {
  .star-card {
    flex-direction: column;
    padding: 20px;
    max-width: 300px;
    gap: 16px;
  }

  .star-card-canvas {
    width: 180px;
    height: 180px;
  }

  .star-card-name {
    font-size: 20px;
  }
}