/* ============================================================
   base.css — RESET · TYPOGRAPHY · FOCUS · FORM-DEFAULTS
   ============================================================ */

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

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

body {
  font-family: var(--font-body);
  font-weight: var(--weight-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
body.nav-open { overflow: hidden; }

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--color-accent); }

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: var(--weight-display);
  color: var(--color-text);
  line-height: 1.18;
  letter-spacing: var(--letter-spacing-tight);
}
h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); letter-spacing: var(--letter-spacing-display); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); letter-spacing: var(--letter-spacing-display); }
h3 { font-size: clamp(1.2rem, 2vw, 1.4rem); }
h4 { font-size: clamp(1rem, 1.5vw, 1.15rem); }

p { color: var(--color-text-soft); }

ul, ol { list-style: none; }

button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

input, textarea, select {
  font: inherit;
  color: inherit;
  background: var(--color-bg);
}

/* === FOCUS ============================================== */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* === SELECTION ========================================== */
::selection { background: var(--color-accent); color: var(--color-text-invert); }

/* === HR ================================================= */
hr {
  border: 0;
  border-top: var(--line);
  margin: var(--space-4) 0;
}

/* === SKIP-LINK ========================================== */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-2);
  background: var(--color-text);
  color: var(--color-text-invert);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  z-index: 999;
  font-weight: 700;
}
.skip-link:focus { top: var(--space-2); color: var(--color-text-invert); }