/* ── DESIGN SYSTEM VARIABLES ── */
:root {
  --color-navy: #0D1B4B;
  --color-blue: #1A56FF;
  --color-gold: #F0A500;
  --color-bg: #F2F4F8;
  --color-white: #FFFFFF;
  --color-text: #111827;
  --color-muted: #6B7280;
  --color-border: #E5E7EB;
  --color-green: #059669;
  --color-red: #DC2626;

  --radius-card: 8px;
  --radius-btn: 6px;
  --radius-input: 4px;
  
  --shadow-card: 0 1px 3px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-hover: 0 4px 16px rgba(0,0,0,0.12);

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  --max-width: 1280px;
}

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

html {
  font-family: 'DM Sans', sans-serif;
  color: var(--color-text);
  background-color: var(--color-white);
  scroll-behavior: smooth;
}

body {
  font-size: 16px;
  line-height: 1.6;
  font-weight: 300;
}

/* ── TYPOGRAPHY ── */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Inter', sans-serif;
  color: var(--color-navy);
  line-height: 1.2;
}

h1 { font-size: clamp(1.8rem, 8vw, 4rem); font-weight: 800; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 5vw, 2.5rem); font-weight: 700; }
h3 { font-size: clamp(1.2rem, 3vw, 1.625rem); font-weight: 600; }
h4 { font-size: clamp(1.1rem, 2vw, 1.25rem); font-weight: 600; }

a {
  color: var(--color-blue);
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover, a:focus {
  color: var(--color-navy);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ── LAYOUT UTILITIES ── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

@media (min-width: 768px) {
  .container {
    padding: 0 32px;
  }
}

.section {
  padding: 48px 0;
}
@media (min-width: 768px) {
  .section {
    padding: 80px 0;
  }
}
@media (min-width: 1200px) {
  .section {
    padding: 120px 0;
  }
}

.section--bg-grey {
  background-color: var(--color-bg);
}
.section--bg-navy {
  background-color: var(--color-navy);
  color: var(--color-white);
}
.section--bg-navy h1, .section--bg-navy h2, .section--bg-navy h3, .section--bg-navy h4 {
  color: var(--color-white);
}
.section--bg-blue {
  background-color: var(--color-blue);
  color: var(--color-white);
}
.section--bg-blue h1, .section--bg-blue h2, .section--bg-blue h3, .section--bg-blue h4 {
  color: var(--color-white);
}

.text-center { text-align: center; }
.text-muted { color: var(--color-muted); }
.text-white-muted { color: rgba(255, 255, 255, 0.7); }