/* ── STUDIO MOON — BASE STYLES ── */

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: var(--weight-light);
  line-height: var(--leading-relaxed);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Grid background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px),
    linear-gradient(var(--color-grid-accent) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid-accent) 1px, transparent 1px);
  background-size: 20px 20px, 20px 20px, 100px 100px, 100px 100px;
  z-index: 0;
  pointer-events: none;
}

/* Scanline overlay */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
  z-index: var(--z-overlay);
  pointer-events: none;
}

/* Typography — Headings */
h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: var(--weight-regular);
}

h1 {
  font-size: var(--text-hero);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

h2 {
  font-size: var(--text-3xl);
  line-height: var(--leading-snug);
}

h3 {
  font-size: var(--text-2xl);
  line-height: var(--leading-normal);
}

/* Links */
a {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity var(--duration-fast);
}

a:hover {
  opacity: 0.7;
}

/* Images */
img {
  display: block;
  max-width: 100%;
}

/* Accessibility — skip to content */
.skip-link {
  position: fixed;
  top: var(--space-3);
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg);
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  z-index: calc(var(--z-header) + 1);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform var(--duration-fast);
}

.skip-link:focus {
  transform: translateY(0);
  opacity: 1;
}

/* Accessibility — focus styles */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

a:focus-visible {
  opacity: 1;
}

/* Accessibility — screen reader only */
.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;
}