/* iam.cash - Global CSS */
/* Inter font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* Design tokens */
:root {
  --color-bg: #ffffff;
  --color-surface: #f8fafc;
  --color-surface-2: #f1f5f9;
  --color-border: #e2e8f0;
  --color-primary: #1a2744;
  --color-primary-hover: #243461;
  --color-accent: #f59e0b;
  --color-accent-hover: #d97706;
  --color-success: #10b981;
  --color-danger: #ef4444;
  --color-text: #0f172a;
  --color-text-muted: #475569;
  --color-text-light: #94a3b8;
  --color-lock-blur: rgba(248,250,252,0.85);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --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;

  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 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);

  --max-tool: 720px;
  --max-compare: 1080px;
  --max-home: 1200px;
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.5em;
  line-height: 1.25;
}

h1 { font-size: var(--text-4xl); font-weight: 700; }
h2 { font-size: var(--text-3xl); font-weight: 700; }
h3 { font-size: var(--text-2xl); font-weight: 600; }
h4 { font-size: var(--text-xl); font-weight: 600; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

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

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

ul, ol { margin: 0 0 1em; padding-left: 1.5em; }

/* Layout */
.container {
  max-width: var(--max-home);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container--tool {
  max-width: var(--max-tool);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container--compare {
  max-width: var(--max-compare);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 4rem 0;
}

/* Utility */
.text-muted { color: var(--color-text-muted); }
.text-light { color: var(--color-text-light); }
.text-sm { font-size: var(--text-sm); }
.text-lg { font-size: var(--text-lg); }
.text-center { text-align: center; }
.font-mono { font-family: var(--font-mono); }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

@media (max-width: 640px) {
  h1 { font-size: var(--text-3xl); }
  h2 { font-size: var(--text-2xl); }
  .section { padding: 2.5rem 0; }
}