@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600&family=JetBrains+Mono:wght@400;600&family=Playfair+Display:ital,wght@1,700;1,800&display=swap');

:root {
  /* Colors */
  --color-primary: #1B3A6B;
  --color-primary-light: #2952A3;
  --color-accent: #4A9EFF;
  --color-accent-glow: rgba(74, 158, 255, 0.15);
  --color-dark: #0A0F1E;
  --color-dark-surface: #0F1629;
  --color-dark-border: rgba(74, 158, 255, 0.12);
  --color-white: #FFFFFF;
  --color-off-white: #F8F9FC;
  --color-text: #1A1A2E;
  --color-text-muted: #6B7280;
  --color-text-light: rgba(255,255,255,0.75);
  --color-success: #10B981;
  --color-success-bg: rgba(16, 185, 129, 0.1);
  --color-accent-hover: #62acff;
  --color-error: #EF4444;
  --color-purple: #a78bfa;

  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-serif: 'Playfair Display', serif;

  /* Spacing scale */
  --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;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 48px rgba(0,0,0,0.12);
  --shadow-accent: 0 0 40px rgba(74,158,255,0.2);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 780px;
  --nav-height: 72px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input, textarea, select { font: inherit; }

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.container--narrow {
  max-width: var(--container-narrow);
}

/* Section spacing */
.section { padding: var(--space-24) 0; }
.section--lg { padding: var(--space-32) 0; }
.section--dark {
  background: var(--color-dark);
  color: var(--color-white);
}
.section--tinted { background: var(--color-off-white); }

/* Typography scale */
.h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.h2 {
  font-family: var(--font-display);
  font-size: clamp(1.625rem, 3vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.015em;
}
.h3 {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2vw, 1.625rem);
  font-weight: 700;
  line-height: 1.3;
}
.h4 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.4;
}
.body-lg { font-size: 1.125rem; line-height: 1.7; }
.body-sm { font-size: 0.875rem; line-height: 1.6; }
.label {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.stat {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 600;
  color: var(--color-accent);
  line-height: 1;
}

/* Italic serif accent for headings */
.display-italic {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 700;
}

/* Utility classes */
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-muted); }
.text-light { color: var(--color-text-light); }
.text-success { color: var(--color-success); }
.text-center { text-align: center; }
.text-white { color: var(--color-white); }

.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-8); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-8); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }

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

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: var(--space-16) 0; }
  .section--lg { padding: var(--space-20) 0; }
}