/* Modern Railway Industrial Theme - Light Edition */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@500;700;800&display=swap');

:root {
  --primary-navy: #0f172a;
  --secondary-navy: #1e293b;
  --accent-rail: #d97706;
  --accent-rail-hover: #b45309;
}

html {
  scroll-behavior: smooth;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: #ffffff;
  color: #0f172a;
}

/* Custom Clean Light Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #f59e0b;
}

/* Custom subtle rail grid background for light mode */
.bg-grid-pattern {
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, rgba(15, 23, 42, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
}

.bg-dot-pattern {
  background-image: radial-gradient(rgba(15, 23, 42, 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* Number display */
.font-display {
  font-family: 'Space Grotesk', sans-serif;
}

/* Range input styling */
input[type="range"] {
  accent-color: #d97706;
}

/* Card hover transitions */
.hover-lift {
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.08);
}