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

/* --- Core Tokens & CSS Variables --- */
:root {
  --bg-primary: #0a0a14;
  --bg-secondary: #121225;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --bg-glass: rgba(18, 18, 37, 0.75);

  --border-glass: rgba(255, 255, 255, 0.12);
  --border-active: rgba(118, 75, 162, 0.6);

  --text-main: #f0f2fe;
  --text-muted: #8e94b8;
  --text-accent: #ffd700;

  --accent-purple: #764ba2;
  --accent-blue: #667eea;
  --accent-cyan: #00f2fe;
  --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --accent-glow: 0 0 20px rgba(118, 75, 162, 0.4);

  --success-color: #00e676;
  --error-color: #ff5252;

  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;

  --font-family: 'Noto Sans TC', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Global Reset & Base Styling --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(102, 126, 234, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(118, 75, 162, 0.15) 0%, transparent 45%);
  background-attachment: fixed;
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1rem;
}

/* --- Container & Layout --- */
.app-container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* --- Header Section --- */
.app-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.brand-title {
  font-size: 2.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, #ffffff 0%, #a5b4fc 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-subtitle {
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 400;
}

/* --- Player Name Bar --- */
.player-bar {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.player-input-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 1;
  max-width: 500px;
}

.player-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.player-input {
  width: 100%;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 0.75rem 1.25rem;
  color: #ffffff;
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  transition: var(--transition-smooth);
}

.player-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 12px rgba(102, 126, 234, 0.3);
  background: rgba(0, 0, 0, 0.5);
}

.player-status-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- Game Cards Grid --- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  position: relative;
  transition: var(--transition-smooth);
}

@media (max-width: 900px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .cards-grid {
    grid-template-columns: 1fr;
  }

  .player-bar {
    flex-direction: column;
    align-items: stretch;
    padding: 1.25rem;
  }
}

/* --- Game Card Styling --- */
.game-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 240px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
  transition: var(--transition-smooth);
}

.game-card.is-active {
  cursor: pointer;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.06) 0%, rgba(118, 75, 162, 0.1) 100%);
}

.game-card.is-active:hover {
  transform: translateY(-6px);
  border-color: var(--border-active);
  box-shadow: 0 12px 30px rgba(118, 75, 162, 0.25);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.09) 0%, rgba(118, 75, 162, 0.18) 100%);
}

.game-card.is-coming-soon {
  opacity: 0.55;
  cursor: not-allowed;
  filter: grayscale(0.6);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.35rem 0.75rem;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-badge.badge-active {
  background: rgba(0, 230, 118, 0.15);
  color: var(--success-color);
  border: 1px solid rgba(0, 230, 118, 0.3);
}

.card-badge.badge-completed {
  background: rgba(255, 215, 0, 0.15);
  color: var(--text-accent);
  border: 1px solid rgba(255, 215, 0, 0.3);
}

.card-badge.badge-soon {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
}

.card-body {
  margin: 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.card-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-blue);
}

.card-footer .cta-arrow {
  transition: transform 0.2s ease;
}

.game-card.is-active:hover .cta-arrow {
  transform: translateX(4px);
}

/* --- Option C Full-Area Expansion View Container --- */
.full-game-overlay {
  display: none;
  position: relative;
  width: 100%;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
  animation: fadeInExpand 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.full-game-overlay.is-visible {
  display: block;
}

@keyframes fadeInExpand {
  from {
    opacity: 0;
    transform: scale(0.97) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* --- Common Leaderboard Component --- */
.leaderboard-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.leaderboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-glass);
}

.lb-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-accent);
}

.lb-count {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.lb-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  max-height: 400px;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.lb-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  transition: var(--transition-smooth);
}

.lb-row.is-self {
  background: rgba(118, 75, 162, 0.25);
  border-color: rgba(118, 75, 162, 0.5);
  box-shadow: 0 0 15px rgba(118, 75, 162, 0.2);
}

.lb-rank {
  font-weight: 800;
  font-size: 1.1rem;
  width: 2.5rem;
}

.rank-1 { color: #ffd700; font-size: 1.25rem; }
.rank-2 { color: #c0c0c0; font-size: 1.2rem; }
.rank-3 { color: #cd7f32; font-size: 1.15rem; }

.lb-name {
  flex: 1;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.self-tag {
  font-size: 0.75rem;
  color: var(--text-accent);
  font-weight: 700;
}

.lb-time {
  font-family: 'Inter', monospace;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--accent-cyan);
}

.leaderboard-empty {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--text-muted);
}

/* --- Buttons --- */
.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  padding: 0.85rem 1.75rem;
  font-size: 1rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  box-shadow: var(--accent-glow);
  transition: var(--transition-smooth);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(118, 75, 162, 0.5);
}

.btn-icon {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-icon:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.3);
}