/* VINE Research — library.css
   Rides on top of /vine_theme.css (design tokens, vine-nav, vine-footer).
   Only contains layout for the research-specific content:
   landing hero, stats, project grids, JPL table, timeline, entry lists,
   article pages, tag pages. */

:root {
  --lib-step-0: 1rem;
  --lib-step-1: 1.618rem;
  --lib-step-2: 2.618rem;
  --lib-step-3: 4.236rem;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--vine-bg-body);
  color: var(--vine-text-bright);
  font-family: var(--vine-font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* Body links in content areas (not nav/footer) */
.site-main a {
  color: var(--vine-gold);
  text-decoration: none;
  border-bottom: 1px solid var(--vine-border-gold);
  transition: border-color 120ms ease;
}
.site-main a:hover { border-bottom-color: var(--vine-gold); }

h1, h2, h3, h4 {
  font-family: var(--vine-font-heading);
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--vine-text-bright);
  margin: var(--lib-step-1) 0 var(--lib-step-0);
  line-height: 1.25;
}
h1 { font-size: var(--lib-step-2); }
h2 { font-size: var(--lib-step-1); }
h3 { font-size: 1.25rem; }

p, ul, ol, blockquote, pre, table {
  margin: 0 0 var(--lib-step-0);
}

blockquote {
  border-left: 2px solid var(--vine-gold);
  padding: 0.2rem 0 0.2rem 1rem;
  color: var(--vine-text-medium);
  font-style: italic;
}

code, pre {
  font-family: var(--vine-font-mono);
  font-size: 0.9em;
}
pre {
  background: var(--vine-bg-elevated);
  padding: 1rem 1.2rem;
  border-radius: 4px;
  border-left: 2px solid var(--vine-border-gold);
  overflow-x: auto;
}
code {
  background: rgba(255,255,255,0.04);
  padding: 0.1em 0.3em;
  border-radius: 3px;
}
pre code { background: transparent; padding: 0; }

.redacted {
  display: inline-block;
  background: var(--vine-gold);
  color: var(--vine-bg-body);
  padding: 0 0.3em;
  border-radius: 3px;
  letter-spacing: 0.15em;
  font-family: var(--vine-font-mono);
  border-bottom: none !important;
}

hr {
  border: none;
  border-top: 1px solid var(--vine-border-subtle);
  margin: var(--lib-step-1) 0;
}

.site-main {
  max-width: 960px;
  margin: 0 auto;
  padding: var(--lib-step-1) 30px var(--lib-step-3);
}

/* ── Section label ────────────────────────────────────────── */

.section-label {
  font-family: var(--vine-font-heading);
  font-size: 0.95rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--vine-gold);
  margin: var(--lib-step-1) 0 var(--lib-step-0);
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--vine-border-subtle);
}

/* ── Landing hero ─────────────────────────────────────────── */

.landing-hero h1 {
  font-size: var(--lib-step-2);
  margin-top: 0;
  background: var(--vine-gradient-logo);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.landing-hero .lede {
  font-size: 1.15rem;
  color: var(--vine-text-medium);
  max-width: 36rem;
}

/* ── Stats row ────────────────────────────────────────────── */

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
  margin: var(--lib-step-0) 0 var(--lib-step-1);
}
.stat {
  background: var(--vine-bg-card);
  border: 1px solid var(--vine-border);
  border-radius: 6px;
  padding: 0.9rem 0.5rem;
  text-align: center;
}
.stat-number {
  font-family: var(--vine-font-heading);
  font-size: 1.8rem;
  color: var(--vine-gold);
  line-height: 1.1;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--vine-text-dim);
  letter-spacing: 0.08em;
  margin-top: 0.2rem;
}
@media (max-width: 640px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); }
}

/* ── Landing split ────────────────────────────────────────── */

.landing-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: var(--lib-step-1) 0;
}
@media (max-width: 640px) {
  .landing-split { grid-template-columns: 1fr; }
}
.split-card {
  display: block;
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--vine-border);
  border-radius: 6px;
  color: var(--vine-text-bright);
  background: var(--vine-bg-card);
  text-decoration: none;
  border-bottom: 1px solid var(--vine-border);
  transition: border-color 160ms ease, background 160ms ease;
}
.split-card:hover {
  border-color: var(--vine-gold);
  background: var(--vine-bg-card-hover);
}
.split-card h2 {
  margin: 0 0 0.4rem;
  color: var(--vine-gold);
  font-size: 1.3rem;
}
.split-card p { margin: 0 0 0.4rem; color: var(--vine-text-medium); }
.split-aux {
  margin-top: 0.6rem;
  font-size: 0.85rem;
}
.split-aux .rss-link {
  color: var(--vine-gold);
  border-bottom: 1px dotted var(--vine-border-gold);
}

/* ── Project grid ─────────────────────────────────────────── */

.project-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
  margin-bottom: var(--lib-step-0);
}
@media (max-width: 640px) {
  .project-grid { grid-template-columns: 1fr; }
}
.project-card {
  background: var(--vine-bg-card);
  border: 1px solid var(--vine-border);
  border-radius: 6px;
  padding: 1rem 1.1rem;
}
.project-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  color: var(--vine-gold);
  letter-spacing: 0.04em;
}
.project-card p {
  margin: 0 0 0.6rem;
  font-size: 0.95rem;
  color: var(--vine-text-medium);
  line-height: 1.55;
}
.card-link {
  display: block;
  color: inherit;
  border-bottom: none !important;
  text-decoration: none;
}
.card-link:hover .project-card {
  border-color: var(--vine-gold);
  background: var(--vine-bg-card-hover);
}
.proj-tag {
  display: inline-block;
  font-family: var(--vine-font-heading);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
}
.proj-tag.live {
  background: rgba(125, 175, 140, 0.2);
  color: var(--vine-green);
  border: 1px solid var(--vine-green-muted);
}
.proj-tag.tested {
  background: rgba(125, 175, 140, 0.15);
  color: var(--vine-green-bright);
}
.proj-tag.working {
  background: var(--vine-gold-glow);
  color: var(--vine-gold);
}
.proj-tag.research {
  background: rgba(168, 184, 184, 0.12);
  color: var(--vine-text-secondary);
}
.proj-tag.soon {
  background: var(--vine-gold-glow);
  color: var(--vine-gold);
  border: 1px dashed var(--vine-border-gold);
}

.inline-path {
  font-family: var(--vine-font-mono);
  font-size: 0.88em;
  color: var(--vine-gold);
  background: var(--vine-gold-glow);
  padding: 0 0.25em;
  border-radius: 3px;
}

/* ── JPL table ────────────────────────────────────────────── */

.jpl-intro, .jpl-note {
  color: var(--vine-text-medium);
  font-size: 0.98rem;
  line-height: 1.6;
}
.jpl-table-wrap { overflow-x: auto; margin: var(--lib-step-0) 0; }
.jpl-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.jpl-table th {
  text-align: left;
  padding: 0.5rem 0.8rem;
  color: var(--vine-gold);
  font-family: var(--vine-font-heading);
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--vine-border);
  font-weight: 400;
}
.jpl-table td {
  padding: 0.5rem 0.8rem;
  border-bottom: 1px solid var(--vine-border-subtle);
  color: var(--vine-text-secondary);
}
.jpl-table td.ok { color: var(--vine-green-bright); }
.jpl-table td.arch { color: var(--vine-gold); }

/* ── Timeline ─────────────────────────────────────────────── */

.timeline { margin: var(--lib-step-0) 0 var(--lib-step-1); }
.timeline-item {
  display: flex;
  gap: 1rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--vine-border-subtle);
}
.timeline-date {
  font-family: var(--vine-font-heading);
  font-size: 0.9rem;
  color: var(--vine-gold);
  min-width: 6rem;
  letter-spacing: 0.05em;
}
.timeline-text {
  flex: 1;
  color: var(--vine-text-medium);
  font-size: 0.98rem;
}

/* ── Entry lists ──────────────────────────────────────────── */

.entry-list ul { list-style: none; padding: 0; }

.entry-item {
  padding: var(--lib-step-0) 0;
  border-bottom: 1px solid var(--vine-border-subtle);
}
.entry-item h3 { margin: 0.2rem 0 0.3rem; }
.entry-item h3 a {
  color: var(--vine-text-bright);
  border-bottom: none;
}
.entry-item h3 a:hover { color: var(--vine-gold); }
.entry-flavour {
  font-family: var(--vine-font-heading);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--vine-gold);
  text-transform: uppercase;
  margin: 0;
}
.entry-item p { margin: 0.2rem 0; color: var(--vine-text-medium); }

.tag-row { margin-top: 0.4rem; }
.tag {
  display: inline-block;
  font-family: var(--vine-font-mono);
  font-size: 0.75rem;
  padding: 0.1rem 0.5rem;
  margin: 0.15rem 0.2rem 0.15rem 0;
  border: 1px solid var(--vine-border-gold);
  border-radius: 999px;
  color: var(--vine-gold);
  text-decoration: none;
}
.tag:hover {
  background: var(--vine-gold-glow);
  border-color: var(--vine-gold);
}

.tag-cloud { margin-top: var(--lib-step-1); }

/* ── Note / CTA box ───────────────────────────────────────── */

.note-box {
  margin-top: var(--lib-step-1);
  padding: 1.3rem 1.4rem;
  background: var(--vine-teal-subtle);
  border: 1px solid var(--vine-border-gold);
  border-radius: 6px;
}
.note-box h2 {
  margin: 0 0 0.5rem;
  color: var(--vine-gold);
  font-size: 1.25rem;
}
.note-box p {
  margin: 0 0 0.6rem;
  color: var(--vine-text-bright);
}
.note-box p:last-child { margin-bottom: 0; }

/* ── Article ──────────────────────────────────────────────── */

.entry-head {
  border-bottom: 1px solid var(--vine-border-subtle);
  padding-bottom: var(--lib-step-0);
  margin-bottom: var(--lib-step-1);
}
.entry-head h1 {
  margin: 0.4rem 0 0.6rem;
  background: var(--vine-gradient-logo);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.entry-meta {
  font-size: 0.9rem;
  color: var(--vine-text-dim);
  margin: 0 0 0.4rem;
}
.entry-summary {
  font-style: italic;
  color: var(--vine-text-medium);
  margin: 0;
}

.entry-body h2 { margin-top: var(--lib-step-1); }
.entry-body h3 { margin-top: var(--lib-step-0); }

.breadcrumb {
  font-size: 0.88rem;
  color: var(--vine-text-dim);
  margin-bottom: var(--lib-step-0);
  letter-spacing: 0.02em;
}
.breadcrumb a {
  color: var(--vine-text-secondary);
  border-bottom: 1px dotted var(--vine-border-subtle);
}
.breadcrumb a:hover {
  color: var(--vine-gold);
  border-bottom-color: var(--vine-gold-soft, var(--vine-border-gold));
}
.tag-name { color: var(--vine-gold); }

/* ── Portfolio landing: preamble + bucket grid ────────────────────── */

.portfolio-preamble {
  margin-bottom: var(--lib-step-1);
}
.portfolio-preamble h1 {
  margin: 0.3rem 0 0.6rem;
}
.portfolio-preamble .preamble-lede {
  color: var(--vine-text-medium);
  font-size: 1.02rem;
  max-width: 44rem;
  line-height: 1.65;
}

.bucket-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: var(--lib-step-0) 0 var(--lib-step-1);
}
@media (max-width: 720px) {
  .bucket-grid { grid-template-columns: 1fr; }
}

.bucket-card {
  display: block;
  padding: 1.1rem 1.3rem 1.2rem;
  background: var(--vine-bg-card);
  border: 1px solid var(--vine-border);
  border-radius: 6px;
  color: var(--vine-text-bright);
  text-decoration: none !important;
  border-bottom: 1px solid var(--vine-border) !important;
  transition: border-color 160ms ease, background 160ms ease;
}
.bucket-card:hover {
  border-color: var(--vine-gold);
  background: var(--vine-bg-card-hover);
}

.bucket-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
}
.bucket-head h2 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--vine-gold);
  letter-spacing: 0.04em;
}
.bucket-count {
  font-family: var(--vine-font-mono);
  font-size: 0.78rem;
  color: var(--vine-text-dim);
  white-space: nowrap;
  letter-spacing: 0.04em;
}

.bucket-intro {
  font-size: 0.95rem;
  color: var(--vine-text-medium);
  line-height: 1.55;
  margin: 0 0 0.7rem;
}

.bucket-peek {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--vine-border-subtle);
  padding-top: 0.55rem;
}
.bucket-peek li {
  font-size: 0.85rem;
  color: var(--vine-text-secondary);
  padding: 0.14rem 0;
  line-height: 1.4;
}
.bucket-peek li.peek-more {
  color: var(--vine-text-dim);
  font-style: italic;
}

/* ── Section sub-index page ───────────────────────────────────────── */

.section-head {
  margin: var(--lib-step-0) 0 0.6rem;
}
.section-head h1 {
  margin: 0 0 0.3rem;
}
.section-meta {
  font-family: var(--vine-font-heading);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--vine-gold);
  margin: 0 0 var(--lib-step-0);
}

.section-intro {
  max-width: 44rem;
  margin-bottom: var(--lib-step-1);
  padding: 0.9rem 1.1rem;
  background: var(--vine-teal-subtle);
  border-left: 3px solid var(--vine-border-gold);
  border-radius: 3px;
}
.section-intro p {
  color: var(--vine-text-bright);
  font-size: 0.98rem;
  line-height: 1.65;
  margin: 0 0 0.7rem;
}
.section-intro p:last-child { margin-bottom: 0; }

.section-entries ol {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: ordered-entry;
}
.section-entries ol.ordered-list .entry-item {
  counter-increment: ordered-entry;
}

/* ── Article: series prev/next nav ────────────────────────────────── */

.series-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: var(--lib-step-1);
  padding-top: var(--lib-step-0);
  border-top: 1px solid var(--vine-border-subtle);
}
@media (max-width: 560px) {
  .series-nav { grid-template-columns: 1fr; }
}
.series-nav a {
  display: block;
  padding: 0.8rem 1rem;
  background: var(--vine-bg-card);
  border: 1px solid var(--vine-border);
  border-radius: 4px;
  color: var(--vine-text-bright);
  text-decoration: none !important;
  border-bottom: 1px solid var(--vine-border) !important;
  transition: border-color 160ms ease;
}
.series-nav a:hover { border-color: var(--vine-gold); }
.series-next { text-align: right; }
.series-nav-label {
  display: block;
  font-family: var(--vine-font-heading);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--vine-gold);
  margin-bottom: 0.2rem;
}
.series-nav-title {
  display: block;
  font-size: 0.95rem;
  color: var(--vine-text-medium);
  line-height: 1.45;
}