/* ============================================================
   PTE Trainer — Main Page Styles
   ============================================================ */

/* Hero */
.hero {
  text-align: center;
  padding: var(--space-2xl) 0;
  margin-bottom: var(--space-xl);
}

.hero-inner {
  max-width: 700px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: var(--accent-soft);
  color: var(--accent);
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  border: 1px solid rgba(99, 102, 241, .15);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 800;
  margin: 0 0 var(--space-md);
  letter-spacing: -.04em;
  background: linear-gradient(135deg, var(--accent) 0%, #ec4899 50%, #f59e0b 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
}

.hero p {
  color: var(--text-muted);
  margin: 0 auto var(--space-xl);
  max-width: 500px;
  font-size: 1.1rem;
  line-height: 1.6;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.hero-stat {
  text-align: center;
  min-width: 80px;
}

.hero-stat-value {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.hero-stat-label {
  font-size: .75rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
  font-weight: 500;
}

/* Category Section */
.category-section {
  margin-bottom: var(--space-2xl);
}

.category-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  padding: 0 var(--space-sm);
}

.category-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  flex-shrink: 0;
}

.category-icon.speaking { background: linear-gradient(135deg, #6366f1, #8b5cf6); }
.category-icon.writing { background: linear-gradient(135deg, #10b981, #34d399); }
.category-icon.reading { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
.category-icon.listening { background: linear-gradient(135deg, #ef4444, #f87171); }
.category-icon.extra { background: linear-gradient(135deg, #6366f1, #ec4899); }

.category-header h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: -.02em;
}

.category-header p {
  color: var(--text-muted);
  font-size: .9rem;
  margin: 0;
}

.category-header .badge {
  margin-left: auto;
}

/* Question Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
}

.question-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  position: relative;
  overflow: hidden;
}

.question-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent-gradient);
  opacity: 0;
  transform: scaleX(0);
  transition: all var(--transition-normal);
  transform-origin: left;
}

.question-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}

.question-card:hover::before {
  opacity: 1;
  transform: scaleX(1);
}

.question-card .card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: var(--space-xs);
  transition: all var(--transition-slow);
}

.question-card:hover .card-icon {
  transform: scale(1.1) rotate(-5deg);
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 8px 24px rgba(99, 102, 241, .3);
}

.question-card h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -.01em;
}

.question-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: .875rem;
  line-height: 1.5;
  flex: 1;
}

.question-card .card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--border);
  font-size: .75rem;
  color: var(--text-muted);
}

/* Card count + weight */
.card-count {
  font-size: .8rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-top: var(--space-xs);
}

.card-weight {
  display: inline-block;
  font-size: .7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: var(--accent-soft);
  color: var(--accent);
  margin-top: var(--space-xs);
  align-self: flex-start;
  letter-spacing: .01em;
}

.card-weight.high { background: rgba(239, 68, 68, .12); color: #ef4444; }
.card-weight.med { background: rgba(245, 158, 11, .12); color: #f59e0b; }
.card-weight.low { background: rgba(107, 114, 128, .12); color: #6b7280; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: var(--space-2xl);
  padding: var(--space-xl) var(--space-lg);
  background: var(--bg-subtle);
}

.footer-inner {
  max-width: 980px;
  margin: 0 auto;
  text-align: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: var(--space-sm);
}

.site-footer p {
  color: var(--text-muted);
  font-size: .875rem;
  margin: 0 0 var(--space-md);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: .875rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 640px) {
  .hero { padding: var(--space-xl) 0; }
  .hero h1 { font-size: 2rem; }
  .hero-stats { gap: var(--space-lg); }
  .hero-stat-value { font-size: 1.6rem; }
  .category-header { flex-wrap: wrap; }
  .category-header .badge { margin-left: 0; }
  .card-grid { grid-template-columns: 1fr; }
}