:root {
  --font-family-base: "Plus Jakarta Sans", "Segoe UI", sans-serif;

  --color-bg: #f6f8fc;
  --color-bg-soft: #fbfcff;
  --color-surface: #ffffff;
  --color-surface-alt: #f1f4fa;
  --color-border: #d7dfec;
  --color-text: #1f2a3d;
  --color-text-muted: #6b7280;

  --color-brand: #3c5daa;
  --color-brand-strong: #2f4a88;
  --color-brand-soft: #eaf0fb;
  --color-focus: #5d79bf;

  --color-accent-teal: #808285;
  --color-accent-orange: #ef9a23;
  --color-accent-rose: #969ba4;

  --color-sidebar-text: #e8edf5;
  --color-sidebar-muted: #aab4c3;

  --radius-sm: 0.45rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-7: 2rem;

  --fz-xs: 0.75rem;
  --fz-sm: 0.875rem;
  --fz-md: 1rem;
  --fz-lg: 1.125rem;
  --fz-xl: 1.375rem;

  --shadow-sm: 0 4px 14px rgba(31, 42, 61, 0.1);
  --shadow-md: 0 12px 30px rgba(31, 42, 61, 0.14);

  --sidebar-width: 262px;
  --header-height: 64px;

  --motion-fast: 140ms;
  --motion-base: 170ms;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family: var(--font-family-base);
  color: var(--color-text);
  background:
    radial-gradient(circle at 10% 0%, rgba(60, 93, 170, 0.13), transparent 32%),
    radial-gradient(circle at 100% 100%, rgba(128, 130, 133, 0.1), transparent 30%),
    radial-gradient(circle at 25% 85%, rgba(239, 154, 35, 0.1), transparent 34%),
    var(--color-bg);
  font-size: var(--fz-sm);
}

a {
  color: var(--color-brand);
  text-decoration: none;
  transition: color var(--motion-fast) ease;
}

a:hover {
  color: var(--color-brand-strong);
}

.skip-link {
  position: absolute;
  top: -999px;
  left: var(--space-4);
  z-index: 1055;
  background: #ffffff;
  color: var(--color-text);
  border: 1px solid var(--color-brand);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: var(--space-3);
}

@keyframes ui-fade-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes skeleton-shimmer {
  from {
    background-position: 200% 0;
  }
  to {
    background-position: -200% 0;
  }
}