:root {
  --bg-color: #05070a;
  --surface-bg: rgba(23, 28, 36, 0.7);
  --surface-border: rgba(255, 255, 255, 0.1);
  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-color: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.2);
  --success-color: #10b981;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --glass-bg: rgba(15, 23, 42, 0.8);
  --glass-border: rgba(255, 255, 255, 0.08);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-family);
  background: radial-gradient(circle at 50% 0%, #1e293b 0%, #05070a 100%);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  padding-bottom: 80px;
  overflow-x: hidden;
}

header {
  padding: 60px 20px;
  text-align: center;
  position: relative;
}

header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 150px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
}

h1 {
  font-weight: 800;
  font-size: clamp(2.5rem, 8vw, 4rem);
  letter-spacing: -0.05em;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #fff 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 30px var(--accent-glow));
}

.subtitle {
  color: var(--text-secondary);
  font-size: clamp(1rem, 3vw, 1.25rem);
  font-weight: 400;
  max-width: 600px;
  margin: 0 auto;
}

main {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 20px;
}

.controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 50px;
  gap: 20px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 30px;
  border-radius: 24px;
  border: 1px solid var(--glass-border);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

@media (min-width: 768px) {
  .controls {
    flex-direction: row;
    justify-content: center;
    padding: 24px 40px;
  }
}

.controls label {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

select {
  appearance: none;
  background-color: #1e293b;
  border: 1px solid var(--glass-border);
  color: #f8fafc;
  padding: 12px 48px 12px 20px;
  font-size: 1rem;
  font-weight: 500;
  font-family: var(--font-family);
  border-radius: 12px;
  outline: none;
  cursor: pointer;
  transition: var(--transition);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  min-width: 240px;
  width: 100%;
}

/* Explicitly set option backgrounds to black/dark for all browsers */
select option {
  background-color: #0f172a; 
  color: #f8fafc;
  padding: 10px;
}

@media (min-width: 768px) {
  select {
    width: auto;
  }
}

select:hover:not(:disabled) {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: var(--accent-color);
  box-shadow: 0 0 20px var(--accent-glow);
}

select:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

select:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Comparison Container */
.comparison-wrapper {
  overflow-x: auto;
  margin-bottom: 2rem;
  border-radius: 24px;
  border: 1px solid var(--glass-border);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  background: var(--glass-bg);
  scrollbar-width: thin;
  scrollbar-color: var(--accent-color) transparent;
}

/* Custom Scrollbar for Webkit */
.comparison-wrapper::-webkit-scrollbar {
  height: 8px;
}
.comparison-wrapper::-webkit-scrollbar-track {
  background: transparent;
}
.comparison-wrapper::-webkit-scrollbar-thumb {
  background: var(--surface-border);
  border-radius: 10px;
}
.comparison-wrapper::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

.compare-grid {
  display: flex;
  flex-direction: column;
  min-width: 800px; /* Ensures grid doesn't collapse too much */
}

@media (max-width: 768px) {
  .compare-grid {
    min-width: 600px;
  }
}

.grid-row {
  display: flex;
  border-bottom: 1px solid var(--glass-border);
  transition: background-color 0.2s ease;
}

.grid-row:hover:not(.header-row) {
  background-color: rgba(255, 255, 255, 0.02);
}

.grid-row:last-child {
  border-bottom: none;
}

.grid-row.header-row {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.grid-cell {
  flex: 1;
  padding: 16px 24px;
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.grid-cell:last-child {
  border-right: none;
}

.grid-cell.label-cell {
  flex: 0 0 200px;
  font-weight: 600;
  color: var(--text-secondary);
  background-color: rgba(0, 0, 0, 0.2);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.selector-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.selector-label {
  font-size: 0.65rem;
  color: var(--accent-color);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
}

/* Club Visuals */
.club-preview {
  text-align: center;
  padding: 10px 0;
}

.club-preview.empty-state {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.875rem;
}

.club-name-display {
  font-size: 1.125rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}

.value-cell {
  font-size: 1rem;
  font-weight: 500;
  color: #cbd5e1;
  text-align: center;
}

.value-cell.empty-state {
  color: var(--text-muted);
  opacity: 0.4;
}

/* Specific styling for brand in preview */
.club-brand-display {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 2px;
}

/* Club action links (Official Site / Shop Used) */
.club-links {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-top: 10px;
    flex-wrap: wrap;
}

.club-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 12px;
    border-radius: 8px;
    font-size: 0.7rem;
    font-weight: 600;
    text-decoration: none;
    letter-spacing: 0.03em;
    transition: var(--transition);
    border: 1px solid transparent;
}

.club-link--oem {
    color: var(--accent-color);
    background: rgba(56, 189, 248, 0.08);
    border-color: rgba(56, 189, 248, 0.2);
}

.club-link--oem:hover {
    background: rgba(56, 189, 248, 0.18);
    border-color: var(--accent-color);
    box-shadow: 0 0 12px var(--accent-glow);
}

.club-link--used {
    color: var(--success-color);
    background: rgba(16, 185, 129, 0.08);
    border-color: rgba(16, 185, 129, 0.2);
}

.club-link--used:hover {
    background: rgba(16, 185, 129, 0.18);
    border-color: var(--success-color);
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.25);
}

.club-link svg {
    flex-shrink: 0;
}

/* Animations */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeInUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Mobile Friendly Table info */
.mobile-info {
    display: none;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: -30px;
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    .mobile-info {
        display: block;
    }
}