/* ══════════════════════════════════════════════════
   Card-grid — shared by /blog (list) & /vibe-coding
   ══════════════════════════════════════════════════ */

/* ── Page background ── */
body:has(.grid-page) {
  background: var(--purple-gradient);
  font-family: var(--font-display);
  color: var(--user-color);
}
.dark-theme:has(.grid-page),
.dark-theme body:has(.grid-page) {
  background: var(--bg-dark-gradient);
}

/* ── Container ── */
.grid-page {
  position: relative;
  z-index: 2;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 clamp(var(--space-4), 5vw, 3rem) clamp(var(--space-4), 5vw, 3rem);
}

/* ── Hero / header ── */
.grid-page-header {
  max-width: 720px;
  margin: 0 auto var(--space-6);
  text-align: center;
}
.grid-page-header .subtitle { margin-inline: auto; }
.grid-page-header .eyebrow {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-mint);
  opacity: 0.9;
}
.grid-page-header h1 {
  margin: 0 0 var(--space-3);
  font-size: clamp(var(--text-2xl), 5vw, var(--text-3xl));
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  background: linear-gradient(110deg, var(--color-white) 0%, var(--accent-mint) 60%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
  position: relative;
}
.grid-page-header h1::after {
  content: "";
  display: block;
  margin-top: var(--space-2);
  height: 2px;
  width: 100%;
  background: linear-gradient(90deg, var(--accent-mint), var(--accent-pink));
  border-radius: var(--radius-pill);
}
.grid-page-header p {
  margin: 0 auto;
  font-size: var(--text-md);
  line-height: 1.55;
  color: rgba(var(--white-rgb), 0.78);
  max-width: var(--content-measure);
}

/* ── Grid ── */
.card-grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  margin: 0 auto;
}

/* ── Card (glass base) ── */
.card {
  display: flex;
  flex-direction: column;
  position: relative;
  background: var(--glass-tint);
  border: 1px solid var(--glass-stroke);
  border-radius: var(--glass-radius);
  overflow: hidden;
  box-shadow: var(--glass-shadow);
  isolation: isolate;
  transition: transform var(--dur-med) var(--ease-out),
              box-shadow var(--dur-med) var(--ease-out),
              background var(--dur-med) var(--ease-out),
              border-color var(--dur-med) var(--ease-out);
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background:
    linear-gradient(180deg, rgba(var(--white-rgb), 0.22) 0%, rgba(var(--white-rgb), 0) 35%),
    radial-gradient(120% 70% at 50% -10%, rgba(var(--white-rgb), 0.35), transparent 60%);
  mix-blend-mode: screen;
  opacity: 0.7;
  z-index: 0;
  transition: opacity var(--dur-med) var(--ease-out);
}
.card > * { position: relative; z-index: 1; }
.card:hover {
  transform: translateY(-4px);
  background: var(--glass-tint-strong);
  border-color: var(--accent-border-hover);
  box-shadow: var(--glass-shadow-hover);
}
.card:hover::before { opacity: 1; }

/* Featured card — first item spans full width */
.card.featured { grid-column: 1 / -1; }

/* ── Card number badge ── */
.card-number {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.7;
}

/* ── Card footer ── */
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}
.card-footer-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-mint);
  opacity: 0.85;
}
a.card-footer-label {
  text-decoration: none;
  transition: opacity var(--dur-fast) var(--ease-out);
}
a.card-footer-label:hover {
  opacity: 1;
  text-decoration: underline;
}
.card-footer-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: rgba(var(--white-rgb), 0.08);
  font-size: 1rem;
  color: var(--accent-mint);
  opacity: 0.7;
  text-decoration: none;
  transition: transform var(--dur-med) var(--ease-spring),
              opacity var(--dur-med) var(--ease-out),
              background var(--dur-med) var(--ease-out);
}
.card:hover .card-footer-arrow {
  transform: translateX(3px);
  opacity: 1;
  background: rgba(var(--white-rgb), 0.14);
}

/* ── Responsive ── */
@media (max-width: 640px) {
  .card.featured { grid-column: auto; }
}