/*
 * obsidian-brain · feature grid (landing page only)
 *
 * Consumes tokens from theme.css. Styles only elements under .ob-features.
 * Dog-ear hover detail on cards — distinctive, not cliche.
 */

.ob-features {
  max-width: 72rem;
  margin: 0 auto;
  padding: 5rem 1.5rem 6rem;
}

@media (max-width: 720px) {
  .ob-features { padding: 3.25rem 1.25rem 4rem; }
}

.ob-features__header {
  margin-bottom: 3rem;
  max-width: 44rem;
}

.ob-features__eyebrow {
  font-family: var(--ob-font-mono);
  font-size: var(--ob-text-2xs);
  letter-spacing: var(--ob-tracking-eyebrow);
  text-transform: uppercase;
  color: var(--ob-berry);
  margin: 0 0 0.75rem;
}

.ob-features__title {
  font-family: var(--ob-font-display);
  font-weight: 500;
  font-size: var(--ob-display-sm);
  line-height: 1.08;
  color: var(--ob-ink);
  margin: 0;
  letter-spacing: -0.015em;
  font-variation-settings: "opsz" 120, "SOFT" 80;
}

.ob-features__title em {
  font-style: italic;
  color: var(--ob-violet);
}

/* ── Grid + card ─────────────────────────────────────────────────────── */
.ob-features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--ob-rule);
  border-left: 1px solid var(--ob-rule);
}

@media (max-width: 960px) {
  .ob-features__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .ob-features__grid { grid-template-columns: 1fr; }
}

.ob-feature {
  position: relative;
  padding: 2rem 1.75rem 2.25rem;
  border-right: 1px solid var(--ob-rule);
  border-bottom: 1px solid var(--ob-rule);
  transition: background 220ms ease;
  overflow: hidden;
}

.ob-feature:hover {
  background: var(--ob-vellum-deep);
}

/* Dog-ear corner fold on hover — pulls the berry accent through */
.ob-feature::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 0 0 0;
  border-color: transparent var(--ob-berry) transparent transparent;
  transition: border-width 260ms cubic-bezier(0.25, 0.75, 0.35, 1);
}

.ob-feature:hover::before {
  border-width: 14px 14px 0 0;
}

.ob-feature__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  margin-bottom: 1.25rem;
  color: var(--ob-violet);
}

.ob-feature__icon svg {
  width: 100%;
  height: 100%;
  stroke-width: 1.35;
}

.ob-feature__eyebrow {
  font-family: var(--ob-font-mono);
  font-size: var(--ob-text-2xs);
  letter-spacing: var(--ob-tracking-eyebrow);
  text-transform: uppercase;
  color: var(--ob-ink-soft);
  margin: 0 0 0.4rem;
}

.ob-feature__title {
  font-family: var(--ob-font-display);
  font-weight: 600;
  font-size: var(--ob-text-xl);
  color: var(--ob-ink);
  margin: 0 0 0.6rem;
  letter-spacing: -0.01em;
  font-variation-settings: "opsz" 72;
  transition: color 150ms ease;
}

.ob-feature:hover .ob-feature__title {
  color: var(--ob-berry);
}

.ob-feature__body {
  font-family: var(--ob-font-body);
  font-size: var(--ob-text-sm);
  line-height: 1.55;
  color: var(--ob-ink-soft);
  margin: 0 0 1.25rem;
}

.ob-feature__body code {
  font-family: var(--ob-font-mono);
  font-size: 0.88em;
  background: var(--md-code-bg-color);
  padding: 0.05em 0.35em;
  color: var(--ob-ink);
}

.ob-feature__link {
  font-family: var(--ob-font-mono);
  font-size: var(--ob-text-xs);
  color: var(--ob-berry);
  text-decoration: none;
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.ob-feature__link::after {
  content: "→";
  transition: transform 180ms ease;
}

.ob-feature__link:hover::after {
  transform: translateX(4px);
}

.ob-feature__link:hover {
  color: var(--ob-berry-deep);
}

[data-md-color-scheme="slate"] .ob-feature__link:hover {
  color: #F291A8;
}