/* Inter — single family sitewide */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");

/* Pico: https://picocss.com — overrides load after pico.min.css */

[data-theme="light"],
:root:not([data-theme="dark"]) {
  --font-body: "Inter", system-ui, sans-serif;
  --pico-font-family: var(--font-body);
  /* Monochrome UI: one accent = ink */
  --pico-color: #111827;
  --pico-muted-color: #5a665f;
  --pico-primary: #111827;
  --pico-primary-background: #111827;
  --pico-primary-border: #111827;
  --pico-primary-underline: rgba(17, 24, 39, 0.35);
  --pico-primary-hover: #000;
  --pico-primary-hover-background: #1e293b;
  --pico-primary-hover-border: #1e293b;
  --pico-primary-hover-underline: #000;
  --pico-primary-focus: rgba(17, 24, 39, 0.25);
  --pico-primary-inverse: #fff;
  --pico-text-selection-color: rgba(17, 24, 39, 0.15);
  --pico-muted-border-color: rgba(82, 96, 88, 0.22);
  --pico-card-background-color: rgba(255, 250, 240, 0.96);
  --pico-card-border-color: rgba(92, 74, 52, 0.14);
  --pico-card-sectioning-background-color: rgba(255, 250, 240, 0.96);
}

/* Warm parchment base + gold / teal wash (type + tags stay modern / Inter) */
body {
  font-family: var(--font-body);
  font-weight: 400;
  position: relative;
  isolation: isolate;
  min-height: 100vh;
  background-color: #efe6d8;
  background-image:
    linear-gradient(180deg, rgba(48, 36, 24, 0.055) 0%, transparent 38%),
    radial-gradient(ellipse 120% 92% at 2% 4%, rgba(118, 148, 138, 0.34) 0%, transparent 56%),
    radial-gradient(ellipse 90% 58% at 50% 34%, rgba(235, 188, 88, 0.5) 0%, transparent 54%),
    radial-gradient(ellipse 102% 88% at 98% 96%, rgba(210, 182, 148, 0.58) 0%, transparent 52%),
    linear-gradient(165deg, rgba(255, 252, 245, 0.35) 0%, transparent 55%);
  background-attachment: fixed;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.26;
  mix-blend-mode: soft-light;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='280' height='280'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  background-size: 220px 220px;
}

header {
  position: relative;
  z-index: 1;
  background: rgba(250, 243, 230, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: var(--pico-border-width) solid rgba(92, 74, 52, 0.12);
}

header nav.container > ul:first-of-type {
  margin-left: 0;
}
header nav.container > ul:first-of-type > li {
  padding-left: 0;
}
header nav.container > ul:first-of-type > li .site-brand a {
  margin-left: 0;
  margin-right: 0;
  padding-left: 0;
  padding-right: 0;
}

main {
  position: relative;
  z-index: 1;
}

.site-brand {
  font-weight: unset;
}
.site-brand a {
  display: flex;
  align-items: center;
  line-height: 0;
}
.site-brand a:focus-visible {
  outline: var(--pico-outline-width) solid var(--pico-primary-focus);
  outline-offset: 0.2rem;
  border-radius: var(--pico-border-radius);
}
.site-logo {
  display: block;
  height: clamp(1.2rem, 4.5vw, 2.1rem);
  width: auto;
  max-width: min(18rem, 88vw);
  aspect-ratio: 1036 / 191;
  object-fit: contain;
}

header nav > ul:last-child a {
  font-size: 0.9375rem;
  font-weight: 500;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--pico-color);
}

main > h1 {
  --pico-font-size: 1.625rem;
  --pico-line-height: 1.25;
  --pico-typography-spacing-top: 1.25rem;
  font-weight: 600;
}

.shelf-hero {
  margin-bottom: calc(var(--pico-block-spacing-vertical) * 1.35);
  max-width: 40rem;
}

.shelf-hero h1 {
  --pico-font-size: 1.625rem;
  --pico-line-height: 1.25;
  --pico-typography-spacing-top: 1rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.shelf-subtitle {
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 0;
  color: var(--pico-muted-color);
  margin: 0;
  max-width: 36rem;
}

.lead {
  font-size: 1.0625rem;
  font-weight: 400;
  color: var(--pico-muted-color);
  max-width: 40rem;
}

.shelf-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Whole card is one link (no nested <a> inside <article>). */
a.shelf-card-hit {
  display: block;
  text-decoration: none;
  color: inherit;
  border-radius: 0.75rem;
}

a.shelf-card-hit:focus-visible {
  outline: 2px solid var(--pico-primary-focus);
  outline-offset: 3px;
}

a.shelf-card-hit:hover article.shelf-item header h2 {
  color: var(--pico-primary-hover);
  text-decoration: underline;
}

/* Flat card: undo Pico’s two-tone <article> header strip */
article.shelf-item {
  margin-bottom: 0;
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--pico-muted-border-color);
  border-radius: 0.75rem;
  background: var(--pico-card-background-color);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

article.shelf-item > header {
  margin: 0;
  margin-bottom: 0.5rem;
  padding: 0;
  border: none;
  background: transparent;
  border-radius: 0;
}

article.shelf-item header h2 {
  --pico-font-size: 1.0625rem;
  --pico-line-height: 1.35;
  --pico-font-weight: 600;
  margin: 0;
  color: var(--pico-color);
}

/* Off-site shelf cards: title shows external hint. */
a.shelf-card-hit--external article.shelf-item--external header h2::after {
  content: " \2197";
  font-size: 0.82em;
  font-weight: 500;
  opacity: 0.45;
  text-decoration: none;
  display: inline-block;
}

article.shelf-item > p.shelf-card-subtitle {
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.45;
  color: var(--pico-muted-color);
  margin: 0 0 0.5rem;
}

.shelf-card-body p {
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.6;
  color: var(--pico-muted-color);
  margin: 0 0 0.85rem;
}

.shelf-card-body p:last-child {
  margin-bottom: 0;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0;
}

.tag {
  font-size: 0.6875rem;
  font-weight: 500;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  border: none;
  color: var(--pico-muted-color);
  background: #e4eae6;
}

/* Chart shell */
.chart-page-lead {
  margin-bottom: 0.75rem;
  color: var(--pico-color);
  font-weight: 500;
}

.chart-page-prose {
  max-width: 40rem;
  margin-bottom: 1rem;
}

.chart-page-prose p {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--pico-muted-color);
  margin: 0 0 0.85rem;
}

.chart-page-prose p:last-child {
  margin-bottom: 0;
}

.chart-embed-wrap {
  margin-top: var(--pico-spacing);
  border: 1px solid var(--pico-muted-border-color);
  border-radius: calc(var(--pico-border-radius) * 2);
  overflow: visible;
  background: #0f1117;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.08);
}

/* Height set by embed postMessage so only the page scrolls vertically */
.chart-iframe {
  display: block;
  width: 100%;
  height: 560px;
  min-height: 280px;
  border: 0;
  vertical-align: top;
  overflow: hidden;
}

.chart-open-full {
  margin-top: var(--pico-spacing);
  font-size: 0.9rem;
  color: var(--pico-muted-color);
}

.breadcrumb {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
  color: var(--pico-muted-color);
}

.breadcrumb a {
  color: var(--pico-muted-color);
}

.breadcrumb a:hover {
  color: var(--pico-color);
}