/*
 * Layout and components for lofi-engineering.dev.
 * Uses only tokens from /theme/tokens.css — no raw colors or sizes here.
 */

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--duration-base) var(--ease-soft), color var(--duration-base) var(--ease-soft);
}

/* Paper grain */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ---------- Page ---------- */

.page {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: var(--space-6) var(--page-gutter) var(--space-7);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  justify-content: flex-end;
}

.main {
  flex: 1;
  display: grid;
  gap: var(--space-7);
  align-content: center;
  padding: var(--space-7) 0;
}

@media (min-width: 52rem) {
  .main {
    grid-template-columns: 1fr 1.1fr;
    gap: var(--space-8);
    align-items: center;
  }
}

/* ---------- Intro ---------- */

.wordmark {
  margin: 0 0 var(--space-5);
  font-family: var(--font-wordmark);
  font-size: var(--text-hero);
  font-weight: var(--weight-wordmark);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-wordmark);
  /* Browsers drop ligatures (e.g. the joined "fi") when letter-spacing isn't 0; keep them. */
  font-feature-settings: "liga" 1;
}

.wordmark .dot { color: var(--color-accent); }

/* Optical nudge: tuck "ering" closer to "engine". */
.wordmark-ering { margin-left: -0.13em; }

.tagline {
  margin: 0;
  max-width: 28rem;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
}

/* ---------- Product lists ---------- */

.section + .section { margin-top: var(--space-6); }

.section-label {
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-regular);
  letter-spacing: 0.08em;
  text-transform: lowercase;
  color: var(--color-text-faint);
}

.products {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.card {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2) var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-rest);
  text-decoration: none;
  color: inherit;
  transition:
    transform var(--duration-base) var(--ease-soft),
    box-shadow var(--duration-base) var(--ease-soft),
    background-color var(--duration-base) var(--ease-soft);
}

a.card:hover {
  background: var(--color-surface-hover);
  box-shadow: var(--shadow-lift);
  transform: translateY(var(--lift-distance));
}

a.card:active {
  box-shadow: var(--shadow-press);
  transform: translateY(0);
  transition-duration: var(--duration-fast);
}

.card--upcoming {
  background: transparent;
  border-style: dashed;
  box-shadow: none;
}

.card-body { min-width: 0; }

.card-name {
  margin: 0;
  text-transform: uppercase;
  font-size: var(--text-lg);
  font-weight: var(--weight-medium);
}

.card--upcoming .card-name { font-family: var(--font-mono); font-size: var(--text-base); }

.card-line {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.card-arrow {
  color: var(--color-text-faint);
  transition: transform var(--duration-base) var(--ease-soft), color var(--duration-base) var(--ease-soft);
}

a.card:hover .card-arrow { color: var(--color-accent); transform: translate(2px, -2px); }

.card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* ---------- Status tags ---------- */

.status {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  white-space: nowrap;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
}

.status--live     { background: var(--status-live-bg);     color: var(--status-live-fg); }
.status--alpha    { background: var(--status-alpha-bg);    color: var(--status-alpha-fg); }
.status--upcoming { background: var(--status-upcoming-bg); color: var(--status-upcoming-fg); }

/* ---------- Theme toggle ---------- */

.theme-toggle {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-text-muted);
  box-shadow: var(--shadow-rest);
  cursor: pointer;
  transition: box-shadow var(--duration-base) var(--ease-soft), transform var(--duration-fast) var(--ease-soft);
}

.theme-toggle:hover  { box-shadow: var(--shadow-lift); color: var(--color-text); }
.theme-toggle:active { box-shadow: var(--shadow-press); transform: scale(0.96); }

.theme-toggle svg { width: 1.1rem; height: 1.1rem; display: none; }
:root:not([data-theme-mode]) .icon-system,
[data-theme-mode="system"] .icon-system,
[data-theme-mode="light"]  .icon-light,
[data-theme-mode="dark"]   .icon-dark { display: block; }

/* ---------- Footer ---------- */

.footer {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
}