/* FlowGuide — Base CSS */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --fg-primary: #2563eb;
  --fg-primary-dark: #1d4ed8;
  --fg-text: #0f172a;
  --fg-text-muted: #64748b;
  --fg-bg: #ffffff;
  --fg-bg-subtle: #f8fafc;
  --fg-border: #e2e8f0;
  --fg-radius: 8px;
  --fg-font: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --fg-max-w: 1200px;
}

body {
  font-family: var(--fg-font);
  color: var(--fg-text);
  background: var(--fg-bg);
  line-height: 1.6;
}

/* Nav */
.fg-header { border-bottom: 1px solid var(--fg-border); padding: 0 1.5rem; }
.fg-nav { max-width: var(--fg-max-w); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 60px; }
.fg-logo { font-weight: 700; font-size: 1.2rem; color: var(--fg-primary); text-decoration: none; }
.fg-nav__links { list-style: none; display: flex; gap: 1.5rem; }
.fg-nav__links a { text-decoration: none; color: var(--fg-text); font-size: 0.95rem; }
.fg-nav__links a:hover { color: var(--fg-primary); }
.fg-nav__lang { font-weight: 600; }

/* Hero */
.fg-home { max-width: var(--fg-max-w); margin: 0 auto; padding: 3rem 1.5rem; }
.fg-hero { text-align: center; padding: 4rem 0 3rem; }
.fg-hero h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; line-height: 1.2; margin-bottom: 1rem; }
.fg-hero p { font-size: 1.15rem; color: var(--fg-text-muted); max-width: 600px; margin: 0 auto; }

/* Categories */
.fg-categories { padding: 2rem 0; }
.fg-categories h2 { font-size: 1.5rem; margin-bottom: 1.5rem; }
.fg-categories__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 1rem; }
.fg-card { display: block; padding: 1rem 1.25rem; background: var(--fg-bg-subtle); border: 1px solid var(--fg-border); border-radius: var(--fg-radius); text-decoration: none; color: var(--fg-text); font-weight: 500; transition: border-color 0.15s, box-shadow 0.15s; }
.fg-card:hover { border-color: var(--fg-primary); box-shadow: 0 2px 8px rgba(37,99,235,0.1); }

/* Footer */
.fg-footer { border-top: 1px solid var(--fg-border); padding: 2rem 1.5rem; text-align: center; color: var(--fg-text-muted); font-size: 0.9rem; }
.fg-footer p + p { margin-top: 0.5rem; }
.fg-footer a { color: var(--fg-text-muted); }

/* Page layout */
.fg-page { max-width: 860px; margin: 0 auto; padding: 2.5rem 1.5rem; }
.fg-page h1 { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 800; margin-bottom: 1rem; }
.fg-page h2 { font-size: 1.4rem; font-weight: 700; margin: 2.5rem 0 1rem; }
.fg-page p { margin-bottom: 1rem; color: var(--fg-text); }
.fg-page table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: 0.95rem; }
.fg-page th { background: var(--fg-bg-subtle); text-align: left; padding: 0.75rem 1rem; border-bottom: 2px solid var(--fg-border); }
.fg-page td { padding: 0.75rem 1rem; border-bottom: 1px solid var(--fg-border); }

@media (max-width: 640px) {
  .fg-nav__links { gap: 1rem; font-size: 0.85rem; }
  .fg-categories__grid { grid-template-columns: 1fr 1fr; }
}