:root {
  --color-saffron: #FF9933;
  --color-saffron-light: #FFB366;
  --color-saffron-dark: #CC7A00;
  --color-green: #138808;
  --color-green-light: #1DB810;
  --color-green-dark: #0D6606;
  --color-ashoka: #000080;
  --color-navy: #0A0F2E;
  --color-navy-mid: #141B3C;
  --color-navy-light: #1E2A50;
  --color-white: #FFFFFF;
  --color-off-white: #F8F9FC;
  --color-gray-100: #F1F3F8;
  --color-gray-200: #E2E6EF;
  --color-gray-400: #9AA3B8;
  --color-gray-600: #5C647A;
  --color-gray-800: #2C3148;
  --color-risk-low: #28A745;
  --color-risk-moderate: #FFC107;
  --color-risk-high: #FD7E14;
  --color-risk-very-high: #DC3545;
  --color-node-politician: var(--color-saffron);
  --color-node-company: var(--color-green);
  --color-node-contract: var(--color-ashoka);
  --color-node-audit: #DC3545;
  --color-node-ministry: var(--color-navy);
  --color-node-scheme: #6F42C1;
  --font-sans: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "Courier New", monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  --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;
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px rgba(0,0,0,0.15), 0 10px 10px rgba(0,0,0,0.04);
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-toast: 400;
}

[data-theme="dark"] {
  --bg-primary: var(--color-navy);
  --bg-secondary: var(--color-navy-mid);
  --bg-tertiary: var(--color-navy-light);
  --bg-card: var(--color-navy-mid);
  --bg-input: var(--color-navy-light);
  --text-primary: var(--color-white);
  --text-secondary: var(--color-gray-400);
  --text-muted: var(--color-gray-600);
  --border-color: rgba(255,255,255,0.08);
  --border-color-strong: rgba(255,255,255,0.15);
  --accent-primary: var(--color-saffron);
  --accent-secondary: var(--color-green);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
}

[data-theme="light"] {
  --bg-primary: var(--color-white);
  --bg-secondary: var(--color-off-white);
  --bg-tertiary: var(--color-gray-100);
  --bg-card: var(--color-white);
  --bg-input: var(--color-gray-100);
  --text-primary: var(--color-navy);
  --text-secondary: var(--color-gray-600);
  --text-muted: var(--color-gray-400);
  --border-color: var(--color-gray-200);
  --border-color-strong: var(--color-gray-400);
  --accent-primary: var(--color-green-dark);
  --accent-secondary: var(--color-saffron-dark);
  --shadow-card: var(--shadow-md);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color var(--transition-slow),
              color var(--transition-slow);
}

a { color: var(--accent-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

img, svg { display: block; max-width: 100%; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container--narrow { max-width: 800px; }
.container--wide   { max-width: 1440px; }