/* ============================================================
   base.css — element-level defaults & global behaviors
   ============================================================ */

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
  color-scheme: light dark;
}

body {
  font-family: var(--font-mono);
  font-size: var(--fs-base);
  line-height: var(--lh-body);
  background: var(--bg);
  color: var(--ink);
  transition: background var(--t-med) var(--ease), color var(--t-med) var(--ease);
  /* visible grid texture for that brutalist feel */
  background-image:
    linear-gradient(to right,  rgba(17,17,17,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(17,17,17,0.04) 1px, transparent 1px);
  background-size: 32px 32px;
}

/* When the dark theme paints in, swap the grid color so the lines
   stay visible against the dark background. */
.theme-dark body,
:root:not(.theme-light) body {
  background-image:
    linear-gradient(to right,  rgba(244,241,234,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(244,241,234,0.05) 1px, transparent 1px);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: var(--lh-tight);
  letter-spacing: -0.01em;
}

h1 { font-size: var(--fs-xxl); }
h2 { font-size: var(--fs-xl);  }
h3 { font-size: var(--fs-lg);  }

p { line-height: var(--lh-body); }

a {
  color: inherit;
  text-decoration-line: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  text-decoration-color: var(--accent);
  transition: color var(--t-fast) var(--ease),
              text-decoration-color var(--t-fast) var(--ease);
}

a:hover,
a:focus-visible {
  color: var(--accent);
  text-decoration-color: var(--ink);
}

/* Universal focus ring — never invisible, always brutalist. */
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

/* Skip link, hidden until focused. */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 1000;
  background: var(--ink);
  color: var(--bg);
  padding: 0.75rem 1rem;
  border: var(--border);
  font-weight: 700;
  text-decoration: none;
}
.skip-link:focus { top: 1rem; }

/* The toggle inputs are visually hidden but stay accessible
   to label clicks. Because they live just inside <body>, their
   :checked state can drive any descendant via the ~ combinator. */
.state-input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  border: 0;
  white-space: nowrap;
}

/* ---------- Reusable section label ---------- */
.section-label {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: var(--space-2) var(--space-4);
  margin-bottom: var(--space-6);
  background: var(--ink);
  color: var(--bg);
  border: var(--border);
  box-shadow: var(--shadow-hard-sm);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: var(--space-3) var(--space-5);
  border: var(--border-thick);
  background: var(--bg);
  color: var(--ink);
  text-decoration: none;
  box-shadow: var(--shadow-hard);
  transition: transform var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease),
              background var(--t-fast) var(--ease);
  cursor: pointer;
}

.btn:hover,
.btn:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--accent);
  text-decoration: none;
}

.btn:active {
  transform: translate(2px, 2px);
  box-shadow: 0 0 0 var(--ink);
}

.btn--primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn--ghost {
  background: transparent;
}

/* ---------- Status dot ---------- */
.dot {
  display: inline-block;
  width: 0.7em; height: 0.7em;
  margin-right: 0.4em;
  background: var(--ink);
  vertical-align: 0.05em;
}
.dot--live {
  background: var(--accent);
  animation: pulse 1.6s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1);   opacity: 1;   }
  50%      { transform: scale(1.4); opacity: 0.6; }
}