/* Guntings String Guide — core design system */

:root {
  --color-cream: #f6f1e4;
  --color-cream-deep: #efe7d3;
  --color-navy: #16233f;
  --color-navy-soft: #233457;
  --color-burgundy: #7a2338;
  --color-burgundy-soft: #9c3a4e;
  --color-gold: #b8903f;
  --color-gold-soft: #d8b878;
  --color-teal: #2c6e68;
  --color-teal-soft: #e4efed;
  --color-ink: #231d14;
  --color-ink-soft: #4a4336;
  --color-border: #ddd2b8;
  --color-card: #fffdf7;

  --font-display: "Fraunces", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --font-body: "Source Sans 3", "Segoe UI", system-ui, -apple-system, sans-serif;

  --radius-sm: 4px;
  --radius-md: 10px;
  --shadow-card: 0 1px 2px rgba(35, 29, 20, 0.06), 0 6px 16px rgba(35, 29, 20, 0.07);
  --container-width: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--color-cream);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-navy);
  line-height: 1.2;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.4rem, 2.6vw, 1.85rem); margin-top: 2.2em; }
h3 { font-size: 1.2rem; margin-top: 1.4em; }

p { margin: 0 0 1.1em; }
a { color: var(--color-burgundy); text-decoration-color: var(--color-burgundy-soft); }
a:hover { color: var(--color-navy); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--color-teal);
  outline-offset: 2px;
}

img, svg { max-width: 100%; display: block; }
table { border-collapse: collapse; width: 100%; }

.container { max-width: var(--container-width); margin: 0 auto; padding: 0 1.25rem; }

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-navy);
  color: #fff;
  padding: 0.6em 1em;
  z-index: 200;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* Header */
.site-header {
  background: var(--color-navy);
  color: #f3efe2;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 3px solid var(--color-gold);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 68px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  text-decoration: none;
  flex-shrink: 0;
}
.site-logo:hover { color: var(--color-gold-soft); }
.site-logo .mark { color: var(--color-gold); }

.primary-nav { display: none; }
.primary-nav ul { list-style: none; display: flex; gap: 1.4rem; margin: 0; padding: 0; align-items: center; }
.primary-nav a {
  color: #e9e3d2;
  text-decoration: none;
  font-size: 0.97rem;
  padding: 0.4rem 0.1rem;
  border-bottom: 2px solid transparent;
}
.primary-nav a:hover, .primary-nav a:focus-visible { border-bottom-color: var(--color-gold); color: #fff; }

.nav-dropdown { position: relative; }
.nav-dropdown > button {
  background: none; border: none; color: #e9e3d2; font-family: var(--font-body);
  font-size: 0.97rem; display: flex; align-items: center; gap: 0.3rem; cursor: pointer; padding: 0.4rem 0.1rem;
}
.nav-dropdown > button:hover { color: #fff; }
.nav-dropdown .dropdown-panel {
  position: absolute; top: 100%; left: 0; background: var(--color-card); color: var(--color-ink);
  min-width: 240px; border-radius: var(--radius-md); box-shadow: var(--shadow-card);
  padding: 0.5rem; display: none; border: 1px solid var(--color-border);
}
.nav-dropdown[data-open="true"] .dropdown-panel { display: block; }
.dropdown-panel a { display: block; padding: 0.5rem 0.7rem; border-radius: var(--radius-sm); text-decoration: none; color: var(--color-ink); font-size: 0.95rem; }
.dropdown-panel a:hover { background: var(--color-teal-soft); color: var(--color-navy); }

.header-cta {
  display: none;
  background: var(--color-burgundy);
  color: #fff;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  white-space: nowrap;
}
.header-cta:hover { background: var(--color-burgundy-soft); color: #fff; }

.mobile-nav-toggle {
  background: none; border: 1px solid rgba(255,255,255,0.3); color: #fff; border-radius: var(--radius-sm);
  padding: 0.4rem 0.6rem; cursor: pointer; font-size: 0.9rem;
}

.mobile-nav {
  display: none;
  background: var(--color-navy-soft);
  border-top: 1px solid rgba(255,255,255,0.15);
}
.mobile-nav[data-open="true"] { display: block; }
.mobile-nav ul { list-style: none; margin: 0; padding: 0.5rem 1.25rem 1rem; }
.mobile-nav a { display: block; color: #ece6d6; text-decoration: none; padding: 0.55rem 0; border-bottom: 1px solid rgba(255,255,255,0.08); }
.mobile-nav .mobile-cta { color: var(--color-gold-soft); font-weight: 600; }

@media (min-width: 900px) {
  .primary-nav { display: block; }
  .header-cta { display: inline-block; }
  .mobile-nav-toggle { display: none; }
  .mobile-nav { display: none !important; }
}

/* Footer */
.site-footer { background: var(--color-navy); color: #cfc9b8; margin-top: 4rem; border-top: 3px solid var(--color-gold); }
.footer-grid { display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); padding: 2.75rem 0 1.5rem; }
.footer-grid h2 { color: #f3efe2; font-size: 1rem; font-family: var(--font-body); font-weight: 700; margin-bottom: 0.8rem; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 0.45rem; }
.footer-grid a { color: #cfc9b8; text-decoration: none; font-size: 0.93rem; }
.footer-grid a:hover { color: var(--color-gold-soft); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); padding: 1.1rem 0 1.6rem; font-size: 0.85rem; color: #a9a391; }
.footer-bottom p { margin: 0 0 0.4em; }

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.97rem;
  border: 2px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--color-burgundy); color: #fff; }
.btn-primary:hover { background: var(--color-burgundy-soft); color: #fff; }
.btn-secondary { background: transparent; color: var(--color-navy); border-color: var(--color-navy); }
.btn-secondary:hover { background: var(--color-navy); color: #fff; }
.btn-ghost { background: transparent; color: var(--color-teal); border-color: var(--color-teal); }
.btn-ghost:hover { background: var(--color-teal); color: #fff; }
.btn-sm { padding: 0.4rem 0.9rem; font-size: 0.85rem; }

/* Hero */
.hero { padding: 3.2rem 0 2.6rem; border-bottom: 1px solid var(--color-border); }
.hero .container { display: grid; gap: 2.5rem; grid-template-columns: 1fr; align-items: center; }
@media (min-width: 880px) { .hero .container { grid-template-columns: 1.1fr 0.9fr; } }
.hero-eyebrow { color: var(--color-teal); font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; font-size: 0.82rem; margin-bottom: 0.6rem; }
.hero h1 { margin-bottom: 0.7rem; }
.hero-lede { font-size: 1.1rem; color: var(--color-ink-soft); max-width: 36em; }
.hero-ctas { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-top: 1.4rem; }
.hero-art { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); box-shadow: var(--shadow-card); padding: 1rem; }
.hero-art.has-photo { padding: 0; overflow: hidden; position: relative; }
.hero-art.has-photo img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.hero-art.has-photo .photo-credit { position: absolute; bottom: 0; right: 0; background: rgba(22,35,63,0.72); color: #f3efe2; }

/* Cards */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 1.3rem;
}
.card-grid { display: grid; gap: 1.3rem; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); margin: 1.6rem 0; }
.card h3 { margin-top: 0; font-size: 1.1rem; }
.card .eyebrow { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-teal); font-weight: 700; margin-bottom: 0.4rem; }
.card p { font-size: 0.95rem; color: var(--color-ink-soft); }
.card .card-link { font-weight: 600; font-size: 0.92rem; text-decoration: none; }
.card { transition: transform 0.15s ease, box-shadow 0.15s ease; }
.card:hover { transform: translateY(-3px); box-shadow: 0 4px 10px rgba(35,29,20,0.1), 0 10px 24px rgba(35,29,20,0.1); }
@media (prefers-reduced-motion: reduce) { .card:hover { transform: none; } }
.card.has-photo { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.card.has-photo .card-photo { aspect-ratio: 16 / 10; overflow: hidden; }
.card.has-photo .card-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card.has-photo .card-body { padding: 1.2rem 1.3rem 1.4rem; }
.card.has-photo h3 { margin-top: 0; }

.category-banner { position: relative; border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-card); margin: 1.4rem 0 2rem; aspect-ratio: 21/7; }
.category-banner img { width: 100%; height: 100%; object-fit: cover; }
.category-banner .photo-credit { position: absolute; bottom: 0; right: 0; background: rgba(22,35,63,0.72); color: #f3efe2; }

.about-photo { border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-card); margin: 1.6rem 0; }
.about-photo img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }

.section { padding: 3rem 0; }
.section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 0.4rem; }
.section-intro { color: var(--color-ink-soft); max-width: 48em; }

/* Family tiles */
.family-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); margin: 1.6rem 0; }
.family-tile {
  display: block; text-decoration: none; background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 1.1rem; box-shadow: var(--shadow-card);
}
.family-tile h3 { color: var(--color-navy); font-size: 1rem; margin: 0.5rem 0 0.2rem; }
.family-tile p { font-size: 0.85rem; color: var(--color-ink-soft); margin: 0; }
.family-tile .icon { color: var(--color-gold); }

/* How-to steps */
.steps-grid { display: grid; gap: 1.3rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin: 1.6rem 0; }
.step-number { display: inline-flex; align-items: center; justify-content: center; width: 2.1rem; height: 2.1rem; border-radius: 50%; background: var(--color-teal-soft); color: var(--color-teal); font-weight: 700; margin-bottom: 0.6rem; }

/* Breadcrumb */
.breadcrumb { font-size: 0.85rem; color: var(--color-ink-soft); margin: 1.2rem auto 0.4rem; padding: 0 1.25rem; max-width: var(--container-width); }
.breadcrumb a { color: var(--color-ink-soft); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-burgundy); }
.breadcrumb .sep { margin: 0 0.4em; color: var(--color-border); }

/* Article page */
.article-meta { display: flex; gap: 1rem; flex-wrap: wrap; font-size: 0.85rem; color: var(--color-ink-soft); margin: 0.6rem 0 1.6rem; }
.article-meta .badge { background: var(--color-teal-soft); color: var(--color-teal); padding: 0.25rem 0.65rem; border-radius: 999px; font-weight: 600; }
.article-header h1 { margin-bottom: 0.3rem; }
.article-category { color: var(--color-burgundy); font-weight: 700; text-transform: uppercase; font-size: 0.78rem; letter-spacing: 0.05em; }

.key-ideas { background: var(--color-teal-soft); border-left: 4px solid var(--color-teal); border-radius: var(--radius-sm); padding: 1.2rem 1.4rem; margin: 1.6rem 0 2rem; }
.key-ideas h2 { margin-top: 0; font-size: 1.05rem; color: var(--color-navy); }
.key-ideas ul { margin: 0; padding-left: 1.2rem; }
.key-ideas li { margin-bottom: 0.4rem; }

.toc { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 1.1rem 1.4rem; margin: 1.6rem 0 2.2rem; }
.toc h2 { margin-top: 0; font-size: 1rem; }
.toc ol { margin: 0; padding-left: 1.3rem; }
.toc a { text-decoration: none; }

.article-body table { margin: 1.4rem 0; font-size: 0.93rem; }
.article-body caption { text-align: left; font-weight: 700; color: var(--color-navy); margin-bottom: 0.4rem; font-family: var(--font-body); }
.article-body th, .article-body td { border: 1px solid var(--color-border); padding: 0.55rem 0.7rem; text-align: left; }
.article-body th { background: var(--color-cream-deep); }
.article-body dl { margin: 1rem 0; }
.article-body dt { font-weight: 700; color: var(--color-navy); margin-top: 0.7rem; }
.article-body dd { margin: 0.2rem 0 0; color: var(--color-ink-soft); }

.faq { margin: 2rem 0; }
.faq-item { border-top: 1px solid var(--color-border); padding: 1rem 0; }
.faq-item h3 { margin-top: 0; font-size: 1.02rem; }

.sources { font-size: 0.88rem; color: var(--color-ink-soft); padding-left: 1.2rem; }

.related-box { background: var(--color-cream-deep); border-radius: var(--radius-md); padding: 1.3rem 1.5rem; margin: 2.2rem 0; }
.related-box h2 { margin-top: 0; font-size: 1.05rem; }
.related-chip-list { display: flex; flex-wrap: wrap; gap: 0.6rem; list-style: none; padding: 0; margin: 0.6rem 0 0; }
.related-chip-list a { display: inline-block; background: var(--color-card); border: 1px solid var(--color-border); border-radius: 999px; padding: 0.4rem 0.9rem; text-decoration: none; font-size: 0.88rem; }

.byline { font-size: 0.88rem; color: var(--color-ink-soft); margin-top: 1.8rem; border-top: 1px solid var(--color-border); padding-top: 1.1rem; }

/* Instrument profile page */
.profile-grid { display: grid; gap: 2rem; grid-template-columns: 1fr; margin: 1.6rem 0 2.4rem; }
@media (min-width: 880px) { .profile-grid { grid-template-columns: 1.1fr 1fr; } }
.profile-art { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 1rem; box-shadow: var(--shadow-card); }
.profile-art.has-photo { padding: 0; overflow: hidden; }
.profile-art.has-photo img { aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--radius-md); }
.photo-credit { font-size: 0.75rem; color: var(--color-ink-soft); padding: 0.5rem 0.9rem; background: var(--color-cream-deep); }
.photo-credit a { color: inherit; }
.spec-table { width: 100%; font-size: 0.93rem; }
.spec-table th { text-align: left; color: var(--color-navy); padding: 0.5rem 0.8rem 0.5rem 0; white-space: nowrap; vertical-align: top; }
.spec-table td { padding: 0.5rem 0; color: var(--color-ink-soft); }
.spec-table tr { border-bottom: 1px solid var(--color-border); }

.tag-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0.8rem 0; }
.tag { background: var(--color-teal-soft); color: var(--color-teal); font-size: 0.78rem; font-weight: 700; padding: 0.3rem 0.7rem; border-radius: 999px; }
.tag.alt { background: var(--color-cream-deep); color: var(--color-burgundy); }

.verified-note { font-size: 0.82rem; color: var(--color-ink-soft); background: var(--color-cream-deep); border-radius: var(--radius-sm); padding: 0.6rem 0.9rem; margin-top: 1rem; }

/* Filters / forms */
.filter-panel { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 1.2rem; margin: 1.5rem 0; }
.filter-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.filter-grid label { display: block; font-size: 0.82rem; font-weight: 700; color: var(--color-navy); margin-bottom: 0.3rem; }
.filter-grid select, .filter-grid input[type="search"] {
  width: 100%; padding: 0.5rem 0.6rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  font-family: var(--font-body); font-size: 0.93rem; background: #fff; color: var(--color-ink);
}
.filter-actions { display: flex; gap: 0.7rem; margin-top: 1rem; flex-wrap: wrap; align-items: center; }
.result-count { font-size: 0.88rem; color: var(--color-ink-soft); margin: 0.6rem 0; }
.empty-state { text-align: center; padding: 2.5rem 1rem; color: var(--color-ink-soft); }

/* Comparator */
.comparator-picker { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin: 1.5rem 0; }
.picker-slot { background: var(--color-card); border: 2px dashed var(--color-border); border-radius: var(--radius-md); padding: 1rem; min-height: 90px; }
.picker-slot.filled { border-style: solid; }
.picker-slot .slot-title { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-teal); font-weight: 700; }
.picker-slot select { width: 100%; margin-top: 0.5rem; padding: 0.45rem; border-radius: var(--radius-sm); border: 1px solid var(--color-border); font-family: var(--font-body); }
.picker-slot .slot-actions { margin-top: 0.6rem; display: flex; gap: 0.5rem; }

.compare-table-wrap { overflow-x: auto; margin: 1.6rem 0; }
#compare-table { min-width: 640px; font-size: 0.92rem; }
#compare-table th, #compare-table td { border: 1px solid var(--color-border); padding: 0.6rem 0.8rem; text-align: left; vertical-align: top; }
#compare-table thead th { background: var(--color-navy); color: #fff; position: sticky; top: 0; }
#compare-table tbody th { background: var(--color-cream-deep); white-space: nowrap; }
#compare-table tr.diff-row td, #compare-table tr.diff-row th:not(:first-child) { background: #fdf3e5; }
#compare-table tr.same-row.hide-same { display: none; }

.compare-toolbar { display: flex; gap: 0.6rem; flex-wrap: wrap; margin: 1rem 0; align-items: center; }
.compare-toolbar label { font-size: 0.85rem; display: inline-flex; align-items: center; gap: 0.4rem; }

.compare-summary { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 1.3rem 1.5rem; margin: 2rem 0; }
.compare-summary h2 { margin-top: 0; font-size: 1.1rem; }
.compare-summary h3 { font-size: 1rem; }

[aria-live] { }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }

@media print {
  .site-header, .site-footer, .mobile-nav, .filter-panel, .hero-ctas, .comparator-picker, .compare-toolbar { display: none !important; }
  body { background: #fff; color: #000; font-size: 12pt; }
  a { color: #000; text-decoration: underline; }
}