/* ============================================================
   Root chooser — client-facing landing that presents the three
   design variants. Tokens-only (theme.css). Not part of any
   single design; this page has no switcher bar since it IS the
   chooser.
   ============================================================ */
@import url("./theme.css");

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-300);
}

main {
  min-height: 60vh;
}

.chooser {
  padding-block: var(--space-3xl) var(--space-2xl);
}

.chooser__intro {
  max-width: 62ch;
  margin-bottom: var(--space-2xl);
}

.chooser__eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--jade-400);
  margin-bottom: var(--space-md);
}

.chooser__intro h1 {
  margin-bottom: var(--space-sm);
}

.chooser__intro p {
  color: var(--text-300);
}

.chooser__note {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  padding: var(--space-sm) var(--space-md);
  background: var(--surface-raised);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  font-size: var(--step--1);
  color: var(--text-500);
  max-width: 52ch;
}

.chooser__note svg {
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 0.1em;
  color: var(--jade-400);
}

/* ---------- Cards grid ---------- */
.chooser__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.design-card {
  --design-accent: var(--jade-400);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: var(--space-xl) var(--space-lg) var(--space-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  overflow: hidden;
  transition: border-color var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
}

.design-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--design-accent);
  opacity: 0.7;
  transition: opacity var(--dur-fast) var(--ease-out);
}

.design-card:hover,
.design-card:focus-visible {
  border-color: var(--design-accent);
  background: var(--ink-750);
  box-shadow: var(--shadow-glow);
}

.design-card:hover::before,
.design-card:focus-visible::before {
  opacity: 1;
}

.design-card:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
}

.design-card__letter {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(3.4rem, 3rem + 2vw, 4.6rem);
  line-height: 1;
  color: var(--design-accent);
}

.design-card__name {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-500);
}

.design-card__desc {
  color: var(--text-300);
  font-size: var(--step-0);
  flex: 1;
}

.design-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--step--1);
  color: var(--design-accent);
  margin-top: var(--space-xs);
}

.design-card__cta svg {
  width: 16px;
  height: 16px;
  transition: transform var(--dur-fast) var(--ease-out);
}

.design-card:hover .design-card__cta svg,
.design-card:focus-visible .design-card__cta svg {
  transform: translateX(3px);
}

/* Distinct accent + tone per option, still tokens-only */
.design-card--a { --design-accent: var(--jade-400); }
.design-card--b {
  --design-accent: var(--amber-400);
  background: linear-gradient(180deg, var(--surface) 0%, var(--ink-850) 100%);
}
.design-card--c {
  --design-accent: var(--blue-400);
  border-style: dashed;
}
.design-card--c:hover,
.design-card--c:focus-visible {
  border-style: solid;
}

@media (prefers-reduced-motion: reduce) {
  .design-card,
  .design-card::before,
  .design-card__cta svg {
    transition: none;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .chooser__grid {
    grid-template-columns: 1fr;
  }
}