/* ============================================================
   FIXED LAYER — typography, layout, shape language, components.
   Reused as-is across every era; only theme-*.css tokens change.
   ============================================================ */

* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: "Karla", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
}
h1,
h2,
h3,
.display {
  font-family: "Italiana", Georgia, serif;
  font-weight: 400;
}
a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover {
  color: var(--color-primary-light);
}
img {
  max-width: 100%;
}

.eyebrow {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.card {
  border: 1px solid rgba(var(--color-text-rgb), 0.14);
  border-radius: 12px;
  background: rgba(var(--color-card-bg-rgb), 0.86);
  padding: 18px;
}
.badge {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
}
@keyframes ticker-scroll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

/* page shell */
.page-shell {
  width: 100%;
  position: relative;
  background: var(--color-bg);
  overflow: hidden;
}
.page-content {
  position: relative;
  z-index: 1;
}
.wrap {
  padding-left: 44px;
  padding-right: 44px;
}
@media (max-width: 720px) {
  .wrap {
    padding-left: 20px;
    padding-right: 20px;
  }
}

/* section heading + sparkle underline (reused: homepage cases, field kit,
   era-page section headers, resources groups, etc.) */
.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 6px;
}
.section-head h2 {
  font-size: 24px;
  margin: 0 0 6px;
}
.section-head .section-sub {
  font-size: 12.5px;
  color: rgba(var(--color-text-rgb), 0.6);
  margin-top: 6px;
}
.sparkle-rule {
  display: block;
}

/* era chip rail — reused on homepage + every era page for cross-era nav */
.era-rail {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
.era-chip {
  padding: 6px 11px;
  border-radius: 6px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.02em;
  display: inline-block;
}
.era-chip.is-current {
  padding: 7px 12px;
  box-shadow: 0 0 0 2px rgba(var(--color-primary-rgb), 0.25);
}
.dashed-rule {
  height: 2px;
  background-image: repeating-linear-gradient(
    to right,
    rgba(var(--color-text-rgb), 0.28) 0,
    rgba(var(--color-text-rgb), 0.28) 6px,
    transparent 6px,
    transparent 13px
  );
  margin: 18px 0 22px;
}

/* nav */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 44px;
  border-bottom: 1px solid rgba(var(--color-text-rgb), 0.12);
  flex-wrap: wrap;
  gap: 12px;
}
.site-nav .brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.site-nav .links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 12px;
  font-weight: 600;
  flex-wrap: wrap;
}
.site-nav .links a {
  color: var(--color-text);
}
.site-nav .links a.is-active {
  color: var(--color-primary);
}
.btn-primary {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-bg);
  font-weight: 700;
  font-size: 12.5px;
  padding: 10px 20px;
  border-radius: 6px;
}
.btn-outline {
  display: inline-block;
  border: 1px solid rgba(var(--color-text-rgb), 0.35);
  color: var(--color-text);
  font-weight: 700;
  font-size: 12.5px;
  padding: 12px 24px;
  border-radius: 6px;
}

/* footer + ticker */
.social-ticker {
  height: 38px;
  background: #0f0b08;
  overflow: hidden;
  display: flex;
  align-items: center;
  border-top: 1px solid rgba(var(--color-text-rgb), 0.1);
}
.social-ticker .track {
  display: flex;
  align-items: center;
  white-space: nowrap;
  animation: ticker-scroll 26s linear infinite;
}
.social-ticker .group {
  display: flex;
  align-items: center;
  gap: 28px;
  padding-right: 28px;
  color: var(--color-text);
  font-size: 11.5px;
  letter-spacing: 0.04em;
}
.site-footer {
  position: relative;
  padding: 24px 44px;
  background: #0f0b08;
  border-top: 1px solid rgba(var(--color-text-rgb), 0.08);
  overflow: hidden;
}
.site-footer .row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  position: relative;
  z-index: 1;
}
.site-footer .brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.site-footer .links {
  display: flex;
  gap: 18px;
  font-size: 11.5px;
  font-weight: 600;
  flex-wrap: wrap;
}
.site-footer .links a {
  color: var(--color-secondary);
}

/* page banner (era pages, resources, masters letter, spotify archive) */
.page-banner {
  position: relative;
  padding: 48px 44px 32px;
  overflow: hidden;
}
.page-banner .eyebrow {
  color: var(--color-secondary);
}
.page-banner h1 {
  font-size: 38px;
  line-height: 1.1;
  margin: 10px 0 12px;
}
.page-banner p {
  color: rgba(var(--color-text-rgb), 0.75);
  font-size: 14.5px;
  line-height: 1.6;
  max-width: 640px;
  margin: 0;
}

/* timeline (era pages) */
.timeline {
  position: relative;
  padding-left: 26px;
  border-left: 2px dashed rgba(var(--color-text-rgb), 0.22);
}
.timeline-item {
  position: relative;
  padding-bottom: 26px;
}
.timeline-item:last-child {
  padding-bottom: 0;
}
.timeline-dot {
  position: absolute;
  left: -33px;
  top: 3px;
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-bg);
}
.timeline-item.is-placeholder .timeline-dot {
  background: transparent;
  border: 2px dashed rgba(var(--color-text-rgb), 0.4);
}
.timeline-item .date {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 3px;
}
.timeline-item.is-placeholder .date {
  color: rgba(var(--color-text-rgb), 0.4);
}
.timeline-item .event {
  font-size: 14px;
  margin-bottom: 3px;
}
.timeline-item .theory {
  font-size: 12px;
  color: var(--color-secondary);
  line-height: 1.5;
}
.timeline-legend {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 11px;
  color: rgba(var(--color-text-rgb), 0.6);
  margin-bottom: 20px;
}
.timeline-legend .swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  margin-right: 5px;
  vertical-align: -1px;
}

/* pending/tag chip — egg-tracking + archive "source: pending" use */
.tag-pending {
  display: inline-block;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 99px;
  border: 1px dashed rgba(var(--color-text-rgb), 0.35);
  color: rgba(var(--color-text-rgb), 0.5);
}

/* sourced/confirmed tag — vetted-reference milestones (era timelines) */
.tag-source {
  display: inline-block;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 2px 8px;
  border-radius: 99px;
  background: rgba(var(--color-secondary-rgb, 143, 217, 196), 0.14);
  color: var(--color-secondary);
}

/* days-since / days-between calculator (era pages) */
.days-tool {
  margin-top: 22px;
  padding: 16px 18px;
  border-radius: 10px;
  border: 1px solid rgba(var(--color-text-rgb), 0.14);
  background: rgba(var(--color-card-bg-rgb), 0.6);
}
.days-tool-row {
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.days-tool-pickers b {
  color: var(--color-primary);
}
.days-select {
  font-size: 12px;
  padding: 5px 8px;
  border-radius: 6px;
  border: 1px solid rgba(var(--color-text-rgb), 0.25);
  background: var(--color-bg);
  color: var(--color-text);
  max-width: 220px;
}

/* archive grids (promo materials + writings, era pages) */
.archive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}
.archive-tile {
  border: 1px solid rgba(var(--color-text-rgb), 0.14);
  border-radius: 10px;
  background: rgba(var(--color-card-bg-rgb), 0.7);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 92px;
}
.archive-tile .label {
  font-size: 12px;
  font-weight: 700;
}
.archive-tile .meta {
  font-size: 10.5px;
  color: rgba(var(--color-text-rgb), 0.55);
}
.writings-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.writings-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid rgba(var(--color-text-rgb), 0.14);
  border-radius: 10px;
  background: rgba(var(--color-card-bg-rgb), 0.6);
}
.writings-item .label {
  font-size: 13px;
  font-weight: 600;
}
.writings-item .kind {
  font-size: 10.5px;
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* resources page — link groups */
.resource-group {
  margin-bottom: 34px;
}
.resource-group h2 {
  font-size: 18px;
  margin: 0 0 4px;
}
.resource-group .group-note {
  font-size: 12px;
  color: rgba(var(--color-text-rgb), 0.55);
  margin-bottom: 14px;
}
.resource-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.resource-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 16px;
  border: 1px solid rgba(var(--color-text-rgb), 0.14);
  border-radius: 10px;
  background: rgba(var(--color-card-bg-rgb), 0.6);
  flex-wrap: wrap;
}
.resource-row .name {
  font-size: 13.5px;
  font-weight: 700;
}
.resource-row .desc {
  font-size: 11.5px;
  color: rgba(var(--color-text-rgb), 0.55);
  flex-basis: 100%;
}
.resource-row .go {
  font-size: 12px;
  font-weight: 700;
  flex: none;
}
.resource-row.is-placeholder {
  border-style: dashed;
}
.resource-row.is-placeholder .name {
  color: rgba(var(--color-text-rgb), 0.5);
}

/* masters letter page */
.letter-card {
  max-width: 680px;
  margin-bottom: 32px;
}
.letter-card .letter-meta {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 14px;
}
.letter-card .letter-year {
  font-family: "Italiana", Georgia, serif;
  font-size: 20px;
}
.letter-card blockquote {
  margin: 0;
  padding-left: 18px;
  border-left: 2px solid var(--color-primary);
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(var(--color-text-rgb), 0.85);
  white-space: pre-line;
}
.letter-card .letter-source {
  margin-top: 12px;
  font-size: 11px;
  color: rgba(var(--color-text-rgb), 0.5);
}

/* spotify & shorts archive grid */
.tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 14px;
}
.tile-grid .card {
  aspect-ratio: 9 / 14;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background: linear-gradient(
    160deg,
    rgba(var(--color-card-bg-rgb), 0.95),
    rgba(var(--color-primary-rgb), 0.12)
  );
}
.tile-grid .tile-kind {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-secondary);
  margin-bottom: 4px;
}