/* ============================================
   SAINT ANALYTICS — Design System v2
   Blue primary · Amber accent · Deep dark
   ============================================ */

:root {
  /* === BACKGROUNDS === */
  --background: #0a1628;
  --background-secondary: #0e1a2e;
  --background-tertiary: #132035;
  --background-card: rgba(255, 255, 255, 0.03);
  --background-elevated: rgba(255, 255, 255, 0.05);
  --bg-primary: #0a1628;
  --bg-secondary: #0e1a2e;
  --bg-tertiary: #132035;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(59, 130, 246, 0.07);
  --bg-section-alt: #0c1426;

  /* === FOREGROUND / TEXT === */
  --foreground: #ffffff;
  --foreground-muted: #f1f5f9;
  --foreground-subtle: #e2e8f0;
  --text-primary: #ffffff;
  --text-secondary: #f1f5f9;
  --text-muted: #e2e8f0;

  /* === PRIMARY (Blue) === */
  --primary: #3b82f6;
  --primary-hover: #60a5fa;
  --primary-dark: #2563eb;
  --primary-muted: rgba(59, 130, 246, 0.12);
  --primary-light: rgba(59, 130, 246, 0.08);
  --primary-glow: rgba(59, 130, 246, 0.2);
  --primary-foreground: #ffffff;

  /* === SECONDARY (Amber accent for energy) === */
  --secondary: #f59e0b;
  --secondary-hover: #fbbf24;
  --secondary-muted: rgba(245, 158, 11, 0.1);
  --secondary-foreground: #030712;

  /* === ACCENT (Emerald — systems healthy) === */
  --accent: #10b981;
  --accent-light: rgba(16, 185, 129, 0.1);

  /* === ERROR === */
  --error: #ef4444;
  --error-light: rgba(239, 68, 68, 0.1);

  /* === BORDERS === */
  --border: rgba(148, 163, 184, 0.08);
  --border-hover: rgba(59, 130, 246, 0.2);
  --border-focus: rgba(59, 130, 246, 0.4);
  --border-glow: rgba(59, 130, 246, 0.15);

  /* === RING (Focus states) === */
  --ring: rgba(59, 130, 246, 0.2);
  --ring-offset: var(--background);

  /* === GRADIENTS === */
  --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #2563eb 50%, #3b82f6 100%);
  --gradient-accent: linear-gradient(135deg, #3b82f6 0%, #10b981 100%);
  --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
  --gradient-hero: radial-gradient(ellipse at top, rgba(59, 130, 246, 0.06) 0%, transparent 50%);
  --gradient-card: linear-gradient(135deg, rgba(59, 130, 246, 0.04) 0%, rgba(16, 185, 129, 0.02) 100%);
  --gradient-glow: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
  --gradient-line: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.25), rgba(59, 130, 246, 0.25), transparent);

  /* === SHADOWS === */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.06);
  --shadow-glow-lg: 0 0 80px rgba(59, 130, 246, 0.1);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.6);

  /* === SPACING (8pt scale) === */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* === TYPOGRAPHY === */
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;

  /* Font sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;

  /* Line heights */
  --leading-none: 1;
  --leading-tight: 1.1;
  --leading-snug: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;

  /* Font weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  /* Letter spacing */
  --tracking-tighter: -0.05em;
  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;

  /* === BORDER RADIUS === */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* === TRANSITIONS === */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Easing */
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

  /* === Z-INDEX === */
  --z-base: 0;
  --z-above: 1;
  --z-dropdown: 10;
  --z-sticky: 50;
  --z-fixed: 100;
  --z-modal-backdrop: 200;
  --z-modal: 300;
  --z-popover: 400;
  --z-tooltip: 500;
  --z-toast: 600;

  /* === GLASSMORPHISM === */
  --glass-bg: rgba(10, 22, 40, 0.85);
  --glass-border: rgba(59, 130, 246, 0.08);
  --glass-blur: 20px;

  /* === GRID === */
  --grid-pattern: linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
                  linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  --grid-size: 60px;

  /* === SECTION SPACING === */
  --section-padding: clamp(4rem, 8vw, 7rem);
  --section-padding-sm: clamp(3rem, 6vw, 5rem);
}