/* ---------------------------------------
  SPACING / RADIUS / SHADOW / Z-INDEX
---------------------------------------- */

:root {
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  --radius-sm: 0.25rem;
  --radius-base: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  --shadow-small: 0 1px 3px var(--shadow-light);
  --shadow-md: 0 4px 6px var(--shadow-medium);
  --shadow-lg: 0 10px 15px var(--shadow-medium);

  --transition-fast: all 0.15s ease;
  --transition-base: all 0.3s ease;
  --transition-slow: all 0.5s ease;
  --transition-smooth: all 0.3s ease;

  --z-sticky: 1020;

  --header-height: 80px;
  --header-height-mobile: 70px;

  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1400px;
}

/* ---------------------------------------
  BASE RESET
---------------------------------------- */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}

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

/* ---------------------------------------
  ACCESSIBILITY
---------------------------------------- */

.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;
}

:focus {
  outline: 2px solid var(--accent-2);
  outline-offset: 2px;
}

::selection {
  background-color: var(--accent-1);
  color: var(--text-on-dark);
}

/* ---------------------------------------
  REDUCED MOTION
---------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------------------------------------
  PRINT
---------------------------------------- */

@media print {
  * {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  a, a:visited {
    text-decoration: underline;
  }
}