:root {
  --color-bg: #0f1419;
  --color-surface: #1a222d;
  --color-surface-elevated: #232d3b;
  --color-border: #2e3a4c;
  --color-text: #e8eef5;
  --color-text-muted: #9aa8b9;
  --color-accent: #5b9fd4;
  --color-accent-hover: #7ab3e0;
  --color-danger: #f07178;
  --color-danger-bg: rgba(240, 113, 120, 0.12);
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, Cantarell,
    "Noto Sans", sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --shadow-soft: 0 8px 24px rgba(0, 0, 0, 0.35);
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-8: 3rem;
  --max-content: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  background: radial-gradient(
      ellipse 120% 80% at 50% -20%,
      #1c2a3d 0%,
      var(--color-bg) 55%
    )
    fixed;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  position: fixed;
  left: var(--space-4);
  top: var(--space-4);
  z-index: 100;
  width: auto;
  height: auto;
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent);
  color: #0f1419;
  border-radius: var(--radius-sm);
  font-weight: 600;
}