/* ============================================================
   ADG Vantage — Base
   Resets, typography defaults, base elements.
   ============================================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  /* Scale the rem base ~6% so body copy reads larger without rewriting every token. */
  font-size: 106.25%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}

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

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

ul, ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ─── Typography ───────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--color-text-strong);
  font-weight: 600;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

h1 { font-size: clamp(2rem, 4.5vw, 3.5rem); font-weight: 700; }
h2 { font-size: clamp(1.625rem, 3vw, 2.5rem); font-weight: 600; }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); text-transform: uppercase; letter-spacing: var(--tracking-wide); }

p {
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
}

p + p { margin-top: var(--space-4); }

strong, b { font-weight: 700; color: var(--color-text-strong); }

a {
  color: var(--color-brand);
  transition: color var(--duration-fast) var(--ease-out);
}
a:hover { color: var(--color-brand-hover); }

/* ─── Focus visibility (accessibility floor) ──────────────── */
:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
  border-radius: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

/* ─── Selection ────────────────────────────────────────────── */
::selection {
  background: var(--color-brand-soft);
  color: var(--color-brand-strong);
}

/* ─── Skip link ────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--color-brand);
  color: var(--color-text-inverse);
  padding: var(--space-3) var(--space-4);
  z-index: var(--z-modal);
  font-weight: 600;
  border-radius: 0 0 var(--radius-md) 0;
}
.skip-link:focus {
  top: 0;
}