/* ============================================================
   Product updates — Release Notes + Roadmap pages.
   Builds on tokens.css + components.css + marketing.css.
   ============================================================ */

/* ── Nav dropdown (Resources) ───────────────────────── */
.nav-dd { position: relative; }
.nav-dd-trigger {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 8px 14px;
  border: 0; background: transparent; cursor: pointer;
  border-radius: var(--radius-md);
  font-family: var(--font-body); font-size: var(--fs-body-sm); font-weight: 500;
  color: var(--color-text-body);
  transition: color var(--motion-fast), background var(--motion-fast);
}
.nav-dd-trigger svg { transition: transform var(--motion-base); }
.nav-dd:hover .nav-dd-trigger,
.nav-dd:focus-within .nav-dd-trigger {
  color: var(--color-text-heading);
  background: var(--color-surface-raised);
}
.nav-dd:hover .nav-dd-trigger svg,
.nav-dd:focus-within .nav-dd-trigger svg { transform: rotate(180deg); }
.nav-dd-trigger.is-current { color: var(--color-text-heading); font-weight: 600; }

.nav-dd-menu {
  position: absolute; top: calc(100% + 8px); inset-inline-start: 0;
  min-width: 260px;
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--space-3);
  opacity: 0; visibility: hidden; transform: translateY(-4px);
  transition: opacity var(--motion-base) var(--ease-out), transform var(--motion-base) var(--ease-out), visibility var(--motion-base);
  z-index: var(--z-dropdown);
}
.nav-dd:hover .nav-dd-menu,
.nav-dd:focus-within .nav-dd-menu {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.nav-dd-label {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-text-muted);
  padding: var(--space-1) var(--space-3) var(--space-2);
  margin: 0;
}
.nav-dd-menu .nav-dd-items { display: flex; flex-direction: column; gap: 2px; }
.nav-dd-item {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background var(--motion-fast);
}
.nav-dd-item:hover { background: var(--color-surface-raised); text-decoration: none; }
.nav-dd-item-icon {
  width: 32px; height: 32px; flex-shrink: 0;
  border-radius: var(--radius-md);
  background: var(--color-primary-subtle); color: var(--color-primary);
  display: inline-flex; align-items: center; justify-content: center;
}
.nav-dd-item-text { display: flex; flex-direction: column; gap: 1px; }
.nav-dd-item-title { font-size: var(--fs-body-sm); font-weight: 500; color: var(--color-text-heading); }
.nav-dd-item.is-current .nav-dd-item-title { color: var(--color-primary); }
.nav-dd-item-desc { font-size: var(--fs-caption); color: var(--color-text-muted); }

/* ── Updates hero ───────────────────────────────────── */
.updates-hero {
  padding: var(--space-16) 0 var(--space-12);
  border-bottom: 1px solid var(--color-border-subtle);
}
.updates-hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: var(--space-12);
  align-items: end;
}
@media (max-width: 880px) { .updates-hero-grid { grid-template-columns: 1fr; gap: var(--space-6); } }
.updates-hero h1 {
  font-family: var(--font-sans); font-size: 52px; line-height: 1.04; font-weight: 600;
  letter-spacing: -0.03em; color: var(--color-text-heading);
  margin: var(--space-3) 0 var(--space-3);
}
@media (max-width: 640px) { .updates-hero h1 { font-size: 38px; } }
.updates-hero-sub {
  font-size: var(--fs-body-lg); line-height: 1.6; color: var(--color-text-body);
  margin: 0; max-width: 480px;
}

/* Subscribe box */
.subscribe {
  background: var(--color-surface-page);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
}
.subscribe h3 {
  font-family: var(--font-sans); font-size: 15px; font-weight: 600;
  color: var(--color-text-heading); margin: 0 0 var(--space-1);
  display: flex; align-items: center; gap: var(--space-2);
}
.subscribe h3 svg { color: var(--color-primary); }
.subscribe p { font-size: var(--fs-body-sm); color: var(--color-text-muted); margin: 0 0 var(--space-3); }
.subscribe-form { display: flex; gap: var(--space-2); }
.subscribe-form .input { flex: 1; min-width: 0; }
@media (max-width: 420px) { .subscribe-form { flex-direction: column; } }
.subscribe-done {
  display: flex; align-items: center; gap: var(--space-2);
  font-size: var(--fs-body-sm); font-weight: 500; color: var(--color-success-text);
  background: var(--color-success-surface);
  border-radius: var(--radius-md);
  padding: 10px var(--space-3);
}

/* ── Filter chips ───────────────────────────────────── */
.filter-row {
  display: flex; align-items: center; gap: var(--space-2);
  flex-wrap: wrap;
  padding: var(--space-6) 0 0;
}
.filter-label {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-text-muted); margin-inline-end: var(--space-1);
}
.filter-chip {
  border: 1px solid var(--color-border);
  background: var(--color-surface-card);
  color: var(--color-text-body);
  font-family: var(--font-body); font-size: var(--fs-body-sm); font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--motion-fast);
}
.filter-chip:hover { border-color: var(--color-border-strong); color: var(--color-text-heading); }
.filter-chip.is-active {
  background: var(--color-text-heading);
  border-color: var(--color-text-heading);
  color: var(--color-text-inverse);
}

/* ── Changelog timeline ─────────────────────────────── */
.changelog { padding: var(--space-10) 0 var(--space-4); }
.rn-entry {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-10);
  position: relative;
  padding-bottom: var(--space-12);
}
/* Vertical rail */
.rn-entry::before {
  content: "";
  position: absolute;
  inset-inline-start: 224px; top: 6px; bottom: 0;
  width: 1px;
  background: var(--color-border);
}
.rn-entry:last-child::before { bottom: var(--space-6); }
/* Dot on the rail */
.rn-entry::after {
  content: "";
  position: absolute;
  inset-inline-start: 224px; top: 8px;
  width: 11px; height: 11px;
  transform: translateX(-5px);
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-subtle);
}
.rn-meta { text-align: end; padding-inline-end: var(--space-10); }
.rn-version {
  display: inline-block;
  font-family: var(--font-mono); font-size: 13px; font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-subtle);
  padding: 4px 10px;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
}
.rn-date {
  font-family: var(--font-mono); font-size: 12px;
  color: var(--color-text-muted);
  display: block;
}
.rn-body { min-width: 0; padding-inline-start: var(--space-4); }
.rn-title {
  font-family: var(--font-sans); font-size: 26px; line-height: 1.2; font-weight: 600;
  letter-spacing: -0.02em; color: var(--color-text-heading);
  margin: 0 0 var(--space-2);
}
.rn-intro { font-size: var(--fs-body); line-height: 1.6; color: var(--color-text-body); margin: 0 0 var(--space-5); max-width: 620px; }

.rn-group { margin-bottom: var(--space-5); }
.rn-group:last-child { margin-bottom: 0; }
.rn-group-tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-3);
}
.rn-group[data-cat="features"]     .rn-group-tag { background: var(--color-primary-subtle);  color: var(--color-primary-hover); }
.rn-group[data-cat="improvements"] .rn-group-tag { background: var(--color-info-surface);    color: var(--color-info-text); }
.rn-group[data-cat="fixes"]        .rn-group-tag { background: var(--color-success-surface); color: var(--color-success-text); }
.rn-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--space-2); max-width: 620px; }
.rn-list li {
  display: flex; gap: var(--space-3); align-items: flex-start;
  font-size: var(--fs-body); line-height: 1.55; color: var(--color-text-body);
}
.rn-list li::before {
  content: "";
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--color-border-strong);
  flex-shrink: 0;
  margin-top: 9px;
}
.rn-list b { color: var(--color-text-heading); font-weight: 600; }

/* Filtered-out states */
.rn-group.is-hidden, .rn-entry.is-hidden { display: none; }

@media (max-width: 760px) {
  .rn-entry { grid-template-columns: 1fr; gap: var(--space-3); padding-inline-start: var(--space-6); }
  .rn-entry::before { inset-inline-start: 5px; top: 4px; }
  .rn-entry::after { inset-inline-start: 5px; top: 6px; transform: translateX(-5px); }
  .rn-meta { text-align: start; padding-inline-end: 0; display: flex; align-items: center; gap: var(--space-3); }
  .rn-version { margin-bottom: 0; }
  .rn-body { padding-inline-start: 0; }
}

/* ── Roadmap ────────────────────────────────────────── */
.roadmap-section { padding: var(--space-10) 0; }
.roadmap-section + .roadmap-section { border-top: 1px solid var(--color-border-subtle); }
.roadmap-section-head {
  display: flex; align-items: center; gap: var(--space-3);
  margin-bottom: var(--space-2);
}
.roadmap-status-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.roadmap-section-head h2 {
  font-family: var(--font-sans); font-size: 24px; font-weight: 600;
  letter-spacing: -0.015em; color: var(--color-text-heading); margin: 0;
}
.roadmap-count {
  font-family: var(--font-mono); font-size: 12px; color: var(--color-text-muted);
  background: var(--color-surface-raised);
  padding: 2px 8px; border-radius: var(--radius-full);
}
.roadmap-section-sub { font-size: var(--fs-body-sm); color: var(--color-text-muted); margin: 0 0 var(--space-6); }

.roadmap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
@media (max-width: 960px) { .roadmap-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .roadmap-grid { grid-template-columns: 1fr; } }

.roadmap-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  display: flex; flex-direction: column; gap: var(--space-2);
  transition: border-color var(--motion-base), box-shadow var(--motion-base), transform var(--motion-base);
}
a.roadmap-card { text-decoration: none; }
a.roadmap-card:hover { border-color: var(--color-border-strong); box-shadow: var(--shadow-md); transform: translateY(-2px); text-decoration: none; }
.roadmap-card-top { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); }
.roadmap-card-cat {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-text-muted);
}
.roadmap-card h3 {
  font-family: var(--font-sans); font-size: 17px; font-weight: 600;
  letter-spacing: -0.01em; color: var(--color-text-heading); margin: 0;
}
.roadmap-card p { font-size: var(--fs-body-sm); line-height: 1.55; color: var(--color-text-body); margin: 0; }
.roadmap-card-ship {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono); font-size: 11px; color: var(--color-primary);
  margin-top: var(--space-1);
}

/* Status colours */
.is-inprogress .roadmap-status-dot { background: var(--color-info-text); }
.is-planned    .roadmap-status-dot { background: var(--color-warning-text); }
.is-shipped    .roadmap-status-dot { background: var(--color-success-text); }

/* Suggest banner */
.suggest-banner {
  background: var(--color-surface-page);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
}
.suggest-banner h3 {
  font-family: var(--font-sans); font-size: 20px; font-weight: 600;
  letter-spacing: -0.015em; color: var(--color-text-heading); margin: 0 0 var(--space-1);
}
.suggest-banner p { font-size: var(--fs-body-sm); color: var(--color-text-muted); margin: 0 0 var(--space-4); }