:root {
  /* Primary - Trusted Indigo */
  --color-primary: oklch(0.45 0.12 255);
  --color-primary-hex: #3B5998;
  --color-primary-hover: oklch(0.40 0.12 255);
  --color-primary-light: oklch(0.92 0.03 255);

  /* Accent - Amber */
  --color-accent: oklch(0.75 0.15 75);
  --color-accent-hex: #D4920A;

  /* Semantic */
  --color-success: #0D9668;
  --color-warning: #D4920A;
  --color-error: #DC2626;
  --color-info: #2B8CA3;

  /* Chart palette */
  --chart-1: #3B5998;
  --chart-2: #0D9668;
  --chart-3: #D4920A;
  --chart-4: #7C4DBA;
  --chart-5: #2B8CA3;

  /* Neutral */
  --color-bg: #F8F9FB;
  --color-bg-card: #FFFFFF;
  --color-bg-sidebar: #1E2433;
  --color-text-primary: #1A1F2E;
  --color-text-secondary: #6B7280;
  --color-text-muted: #9CA3AF;
  --color-border: #E5E7EB;

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-code: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* Border radius */
  --radius-btn: 8px;
  --radius-card: 12px;
  --radius-modal: 16px;
  --radius-pill: 9999px;

  /* Easing */
  --ease-default: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-entrance: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-hover: 200ms;
  --duration-entrance: 600ms;
  --duration-collapse: 300ms;

  /* Z-index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-toast: 9999;

  /* Sidebar */
  --sidebar-width: 240px;
  --sidebar-collapsed-width: 64px;
}

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

html, body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

html {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
}

code, pre {
  font-family: var(--font-code);
}

a {
  color: var(--color-primary-hex);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* Tabular figures for numbers */
.tabular-nums {
  font-variant-numeric: tabular-nums;
}