/* ---------------------------------------------------------------------
   GALENOS Trends — design tokens
   Palette: warm paper background, ink navy text, teal for "actual" data,
   amber for "predicted" data, brick red reserved for trendiness signals.
   Type: Source Serif 4 (masthead/headings), Inter (UI/body), IBM Plex Mono
   (counts, dates, keyword chips).
--------------------------------------------------------------------- */

:root {
  --paper: #FAF9F4;
  --paper-raised: #FFFFFF;
  --ink: #1B2233;
  --ink-soft: #3D4457;
  --muted: #6B7280;
  --line: #DDD8C9;
  --teal: #2B6E68;
  --teal-soft: #E4EEEC;
  --amber: #D98A3D;
  --trend: #B5423A;
  --trend-soft: #F6E4E1;

  --font-display: "Source Serif 4", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --radius: 3px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
}

a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, select:focus-visible, button:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

/* ---- Masthead ---------------------------------------------------- */

.masthead__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2.25rem 2rem 1.25rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
}

.masthead__text {
  min-width: 0; /* allow the title to wrap/truncate instead of pushing the logo out */
}

.masthead__logo-link {
  flex-shrink: 0;
  line-height: 0;
}

.masthead__logo {
  height: 56px;
  width: auto;
  border-radius: 6px;
  display: block;
}

@media (max-width: 640px) {
  .masthead__logo { height: 40px; }
}

.masthead__brand {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  color: var(--ink);
}
.masthead__brand:hover { text-decoration: none; }

.masthead__mark {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.28em;
  color: var(--trend);
}

.masthead__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  letter-spacing: -0.01em;
}

.masthead__sub {
  margin: 0.6rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.masthead__rule {
  height: 5px;
  background: linear-gradient(to right, var(--ink) 0 40%, var(--trend) 40% 43%, var(--ink) 43% 100%);
  opacity: 0.9;
}

/* ---- Layout -------------------------------------------------------- */

.page {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2rem 2rem 4rem;
}

/* ---- Stats strip ----------------------------------------------------*/

.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 1.75rem;
}

.stat {
  padding: 1.1rem 1.4rem;
  border-left: 1px solid var(--line);
}
.stat:first-child { border-left: none; }

.stat__value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 600;
}

.stat--trendy .stat__value { color: var(--trend); }

.stat__label {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 0.15rem;
}

/* ---- Ticker ---------------------------------------------------------*/

.ticker {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--trend-soft);
  border: 1px solid var(--trend);
  border-radius: var(--radius);
  padding: 0.7rem 1.1rem;
  margin-bottom: 2rem;
  overflow-x: auto;
}

.ticker__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--trend);
  flex-shrink: 0;
}

.ticker__items {
  display: flex;
  gap: 1.6rem;
  flex-wrap: nowrap;
  overflow-x: auto;
}

.ticker__item {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.ticker__item:hover { color: var(--trend); text-decoration: none; }

.ticker__arrow { color: var(--trend); font-size: 0.65rem; }

.ticker__empty { color: var(--muted); font-size: 0.9rem; }

/* ---- Panels ---------------------------------------------------------*/

.panel-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 880px) {
  .panel-grid { grid-template-columns: 1fr; }
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
}

.panel {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem 1.6rem;
}

.panel__head { margin-bottom: 0.9rem; }
.panel__head--row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.panel h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 0.25rem;
}

.panel__hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.chart { width: 100%; }
.chart--tall { min-height: 360px; }

/* ---- Topic explorer ---------------------------------------------------*/

.chart-controls {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-shrink: 0;
  flex-wrap: wrap;
}

.count-select {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.count-select select {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--ink);
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.sort-toggle {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  flex-shrink: 0;
}

.sort-toggle__btn {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--muted);
  background: var(--paper);
  border: none;
  padding: 0.4rem 0.85rem;
  cursor: pointer;
}

.sort-toggle__btn + .sort-toggle__btn {
  border-left: 1px solid var(--line);
}

.sort-toggle__btn:hover {
  color: var(--ink);
}

.sort-toggle__btn.is-active {
  background: var(--teal);
  color: #fff;
}

.topic-select {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.topic-select select {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  min-width: 260px;
}

.keyword-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
}

.chip {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.55rem;
  background: var(--teal-soft);
  color: var(--teal);
  border-radius: var(--radius);
}

/* ---- Topic / month pages ---------------------------------------------*/

.breadcrumb {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.topic-header { margin-bottom: 1.5rem; }

.topic-header h1 {
  font-family: var(--font-display);
  font-size: 2rem;
  margin: 0 0 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.topic-header__meta {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0;
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

.badge--trendy {
  background: var(--trend-soft);
  color: var(--trend);
  border: 1px solid var(--trend);
}

.paper-list {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.paper-card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-left: 3px solid var(--teal);
  border-radius: var(--radius);
  padding: 1.1rem 1.3rem;
}

.paper-card__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0 0 0.3rem;
}

.paper-card__meta {
  font-size: 0.8rem;
  color: var(--muted);
  margin: 0 0 0.6rem;
}

.paper-card__abstract {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0;
}

.empty-state {
  color: var(--muted);
  font-style: italic;
}

/* ---- Footer ------------------------------------------------------------*/

.site-footer {
  border-top: 1px solid var(--line);
}

.site-footer__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 1.5rem 2rem;
  font-size: 0.8rem;
  color: var(--muted);
}