:root {
  --primary-rgb: 59, 130, 246;
  --accent-purple-rgb: 139, 92, 246;
  --accent-blue-rgb: 59, 130, 246;
  --accent-cyan-rgb: 6, 182, 212;
  
  --surface-base: #f1f5f9;
  --surface: #ffffff;
  --surface-muted: #f8fafc;
  --surface-overlay: rgba(255, 255, 255, 0.75);
  --text-main: #0f172a;
  --text-muted: #475569;
  --border-soft: #e2e8f0;
  --border-strong: rgba(148, 163, 184, 0.5);
  
  --shadow-premium: 0 10px 40px -10px rgba(0, 0, 0, 0.1);
  --shadow-premium-lg: 0 20px 60px -12px rgba(0, 0, 0, 0.15);
  
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2.5rem;
  
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
}

.dark {
  --surface-base: #06080d;
  --surface: #0f121a;
  --surface-muted: #141a26;
  --surface-overlay: rgba(15, 18, 26, 0.7);
  --text-main: #f9fafb;
  --text-muted: #9ca3af;
  --border-soft: rgba(255, 255, 255, 0.05);
  --border-strong: rgba(255, 255, 255, 0.1);
  --shadow-premium: 0 10px 40px -10px rgba(0, 0, 0, 0.4);
  --shadow-premium-lg: 0 20px 60px -12px rgba(0, 0, 0, 0.5);
}

/* Glassmorphism Utilities */
.glass-panel {
  background: var(--surface-overlay);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border: 1px solid var(--border-soft);
}

.glass-card {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.dark .glass-card {
  background: rgba(15, 18, 26, 0.4);
}

html, body {
  max-width: 100%;
  overflow-x: hidden;
}

body {
  background: var(--surface-base);
  color: var(--text-main);
}

.page-shell {
  width: 100%;
  max-width: 80rem;
  margin-inline: auto;
  padding-inline: 1rem;
}

@media (min-width: 640px) {
  .page-shell {
    padding-inline: 1.5rem;
  }
}

.surface-card {
  background: var(--surface);
  color: var(--text-main);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-xl);
}

.btn-primary, .btn-secondary, .btn-danger {
  min-height: 2.75rem;
  min-width: 2.75rem;
  border-radius: var(--radius-lg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: transform var(--duration-fast) var(--ease-spring), background var(--duration-fast) var(--ease-smooth), box-shadow var(--duration-fast) var(--ease-smooth);
}

.btn-primary:active, .btn-secondary:active, .btn-danger:active {
  transform: scale(0.96);
}

.btn-primary:hover, .btn-secondary:hover, .btn-danger:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.btn-danger:focus-visible,
.input-standard:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 2px solid rgba(var(--primary-rgb), 0.65);
  outline-offset: 2px;
}

.input-standard {
  width: 100%;
  min-height: 2.75rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  background: var(--surface-muted);
  color: var(--text-main);
  padding-inline: 1rem;
  padding-block: 0.625rem;
}

.input-standard::placeholder {
  color: var(--text-muted);
}

.responsive-table {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.responsive-table table {
  min-width: 42rem;
}

.mobile-stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 1024px) {
  .mobile-stack.lg-2 {
    grid-template-columns: 2fr 1fr;
  }
}

/* Shared component safety layer for dark mode consistency */
.card-premium {
  background: var(--surface);
  color: var(--text-main);
  border: 1px solid var(--border-soft);
}

.badge-premium {
  background: #f3f4f6;
  color: #374151;
  border: 1px solid #e5e7eb;
}

.dark .badge-premium {
  background: #1f2937;
  color: #d1d5db;
  border-color: #374151;
}

.btn-secondary {
  background: #f3f4f6;
  color: #111827;
  border: 1px solid #e5e7eb;
}

.btn-secondary:hover {
  background: #e5e7eb;
}

.dark .btn-secondary {
  background: #1f2937;
  color: #f3f4f6;
  border-color: #374151;
}

.dark .btn-secondary:hover {
  background: #374151;
}
/* Roadmap Components */
.roadmap-line {
  background: linear-gradient(to bottom, 
    transparent,
    rgba(var(--primary-rgb), 0.2) 10%,
    rgba(var(--primary-rgb), 0.5) 50%,
    rgba(var(--primary-rgb), 0.2) 90%,
    transparent
  );
  box-shadow: 0 0 20px rgba(var(--primary-rgb), 0.1);
}

.roadmap-dot {
  background: var(--surface);
  border: 4px solid rgba(var(--primary-rgb), 0.3);
  box-shadow: 0 0 15px rgba(var(--primary-rgb), 0.4);
}

.dark .roadmap-dot {
  background: #06080d;
  border-color: rgba(var(--primary-rgb), 0.5);
  box-shadow: 0 0 20px rgba(var(--primary-rgb), 0.6);
}

.roadmap-card-glass {
  background: var(--surface-overlay);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-premium);
  transition: all 0.4s var(--ease-smooth);
}

.roadmap-card-glass:hover {
  border-color: rgba(var(--primary-rgb), 0.3);
  box-shadow: 0 20px 40px -20px rgba(var(--primary-rgb), 0.25);
  transform: translateY(-4px);
}