/* ============================================================
   LongevityForward.com - Main Stylesheet
   ============================================================ */

/* ---- Custom properties ---- */
:root {
  --color-navy:        #0d1b2a;
  --color-navy-mid:    #1a2e45;
  --color-navy-light:  #243b55;
  --color-teal:        #10b981;
  --color-teal-dark:   #059669;
  --color-sky:         #0ea5e9;
  --color-sky-dark:    #0284c7;
  --color-green:       #22c55e;
  --color-white:       #ffffff;
  --color-off-white:   #f8fafc;
  --color-gray-50:     #f8fafc;
  --color-gray-100:    #f1f5f9;
  --color-gray-200:    #e2e8f0;
  --color-gray-300:    #cbd5e1;
  --color-gray-400:    #94a3b8;
  --color-gray-500:    #64748b;
  --color-gray-600:    #475569;
  --color-gray-700:    #334155;
  --color-text:        #1e293b;
  --color-text-muted:  #64748b;

  --font-sans:    'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:    'SF Mono', 'Fira Code', monospace;

  --header-height:   64px;
  --content-narrow:  720px;
  --content-wide:    1000px;
  --site-width:      1200px;
  --section-pad:     5rem;
  --radius-sm:       6px;
  --radius-md:       10px;
  --radius-lg:       16px;
}

/* ---- Reset / base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-white);
  padding-top: var(--header-height);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--color-sky); text-decoration: none; }
a:hover { color: var(--color-sky-dark); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--color-navy);
}
h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.4rem); }

p { margin-bottom: 1.25rem; }
p:last-child { margin-bottom: 0; }

ul, ol { padding-left: 1.5rem; margin-bottom: 1.25rem; }
li { margin-bottom: 0.4rem; }

/* ---- Containers ---- */
.container {
  width: 100%;
  max-width: var(--site-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
}
.container--narrow { max-width: var(--content-narrow); }
.container--wide   { max-width: var(--content-wide); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  text-decoration: none;
}
.btn--primary {
  background: var(--color-teal);
  color: var(--color-white);
  border-color: var(--color-teal);
}
.btn--primary:hover {
  background: var(--color-teal-dark);
  border-color: var(--color-teal-dark);
  color: var(--color-white);
}
.btn--outline {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-navy);
}
.btn--outline:hover {
  background: var(--color-navy);
  color: var(--color-white);
}
.btn--outline-green {
  background: transparent;
  color: var(--color-teal);
  border-color: var(--color-teal);
}
.btn--outline-green:hover {
  background: rgba(16,185,129,0.12);
  border-color: var(--color-teal);
  color: var(--color-white);
}
.btn--outline-white {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.6);
}
.btn--outline-white:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-white);
  color: var(--color-white);
}
.btn--secondary {
  background: var(--color-sky);
  color: var(--color-white);
  border-color: var(--color-sky);
}
.btn--secondary:hover {
  background: var(--color-sky-dark);
  border-color: var(--color-sky-dark);
  color: var(--color-white);
}

/* ---- Header ---- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  max-width: var(--site-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
  height: 100%;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  flex-shrink: 0;
}
.site-logo__text { display: flex; flex-direction: column; }
.site-logo__name {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-navy);
  line-height: 1.1;
}
.site-logo__tagline {
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gray-400);
  line-height: 1;
}

/* nav */
.site-nav { margin-left: auto; }
.site-nav__list {
  display: flex;
  list-style: none;
  gap: 0;
  padding: 0; margin: 0;
}
.site-nav__item { position: relative; }
.site-nav__link {
  display: block;
  padding: 0 0.9rem;
  height: var(--header-height);
  line-height: var(--header-height);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--color-gray-700);
  text-decoration: none;
  transition: color 0.15s;
  white-space: nowrap;
}
.site-nav__link:hover,
.site-nav__item.is-active .site-nav__link { color: var(--color-navy); }
.site-nav__item.is-active .site-nav__link {
  box-shadow: inset 0 -2px 0 var(--color-teal);
}

/* Dropdown */
.site-nav__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  list-style: none;
  min-width: 220px;
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity 0.15s, transform 0.15s, visibility 0.15s;
  z-index: 200;
}
.site-nav__item.has-dropdown:hover .site-nav__dropdown,
.site-nav__item.has-dropdown:focus-within .site-nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.site-nav__dropdown-link {
  display: block;
  padding: 0.5rem 1.25rem;
  font-size: 0.82rem;
  color: var(--color-gray-600);
  text-decoration: none;
  transition: background 0.1s, color 0.1s;
}
.site-nav__dropdown-link:hover {
  background: var(--color-gray-50);
  color: var(--color-navy);
}

/* CTA button in header */
.site-header__cta {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 1rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-white);
  background: var(--color-navy);
  border-radius: var(--radius-sm);
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.15s;
  flex-shrink: 0;
}
.site-header__cta:hover {
  background: var(--color-navy-mid);
  color: var(--color-white);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 6px;
  background: none;
  border: none;
  cursor: pointer;
  margin-left: auto;
}
.mobile-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-navy);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}
.mobile-menu-toggle__label {
  display: block;
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-navy);
  margin-top: 3px;
  line-height: 1;
  width: auto;
  height: auto;
  background: none;
  border-radius: 0;
  transition: none;
}
.mobile-menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0; right: 0;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  padding: 1rem 1.5rem 2rem;
  z-index: 99;
  overflow-y: auto;
  max-height: calc(100vh - var(--header-height));
}
.mobile-menu.is-open { display: block; }
.mobile-menu ul { list-style: none; padding: 0; margin: 0; }
.mobile-menu__link {
  display: block;
  padding: 0.65rem 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-navy);
  border-bottom: 1px solid var(--color-gray-100);
  text-decoration: none;
}
.mobile-menu__sub {
  padding: 0.25rem 0 0.5rem 1rem;
}
.mobile-menu__sub a {
  display: block;
  padding: 0.35rem 0;
  font-size: 0.875rem;
  color: var(--color-gray-600);
  text-decoration: none;
}

/* ---- Sections ---- */
.section { padding: var(--section-pad) 0; }
.section--light   { background: var(--color-gray-50); }
.section--white   { background: var(--color-white); }
.section--dark    { background: var(--color-navy-mid); color: var(--color-gray-100); }
.section--navy    { background: var(--color-navy); color: var(--color-gray-100); }

.section__title {
  text-align: center;
  margin-bottom: 1.25rem;
}
.section__title--light { color: var(--color-white); }
.section--dark .section__title { color: var(--color-teal); }
.section__lead {
  text-align: center;
  font-size: 1.15rem;
  color: var(--color-gray-600);
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: 1.5rem;
}
.section__lead--light { color: var(--color-gray-300); }
.section--dark .section__lead { color: rgba(255,255,255,0.9); }
.section__body {
  text-align: center;
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: 2rem;
  color: var(--color-gray-300);
}
.section--dark .section__body { color: rgba(255,255,255,0.72); }
.text-center { text-align: center; }

/* ---- Hero ---- */
.hero {
  background:
    linear-gradient(to right, rgba(13,27,42,0.82) 0%, rgba(13,27,42,0.55) 60%, rgba(13,27,42,0.4) 100%),
    url('/assets/img/hero-bg.jpg') center center / cover no-repeat;
  color: var(--color-white);
  padding: 5rem 0 4rem;
  min-height: 500px;
  display: flex;
  align-items: center;
}
.hero__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  width: 100%;
  max-width: var(--site-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
}
.hero__content { max-width: 620px; }
.hero__title {
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  font-weight: 200;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--color-white);
  margin-bottom: 1.25rem;
}
.hero__sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 2rem;
  line-height: 1.6;
}
.hero__ctas { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero__badge {
  flex-shrink: 0;
  background: rgba(10,20,35,0.52);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(16,185,129,0.3);
  border-radius: 20px;
  padding: 2.2rem 2.8rem;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.08);
}
.hero__badge-inner { display: flex; flex-direction: column; gap: 0.5rem; }
.hero__badge-label {
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-teal);
  font-weight: 600;
}
.hero__badge-value {
  font-size: 2rem;
  font-weight: 200;
  color: var(--color-white);
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.hero__badge-sub {
  font-size: 0.6rem;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* ---- Category cards ---- */
.card-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.card-grid--3 { grid-template-columns: repeat(3, 1fr); }

.category-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: box-shadow 0.2s, transform 0.2s;
}
.category-card:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}
.category-card__icon {
  width: 40px;
  height: 40px;
  margin-bottom: 1rem;
}
.category-card__icon svg { width: 100%; height: 100%; }
.category-card__title {
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 0.6rem;
}
.category-card__title a {
  color: var(--color-navy);
  text-decoration: none;
}
.category-card__title a:hover { color: var(--color-teal); }
.category-card__desc {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  margin-bottom: 1rem;
  line-height: 1.55;
}
.category-card__explore {
  font-size: 0.825rem;
  font-weight: 500;
  color: var(--color-sky);
  text-decoration: none;
}
.category-card__explore:hover { color: var(--color-sky-dark); }

/* ---- Trust strip ---- */
.trust-strip {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2rem;
}
.trust-strip__item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-gray-300);
}
.trust-strip__icon {
  color: var(--color-teal);
  font-size: 1rem;
}

/* ---- Article grid ---- */
.article-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 2rem;
}
.article-grid--3 { grid-template-columns: repeat(3, 1fr); }
.article-grid--2 { grid-template-columns: repeat(2, 1fr); }

.article-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.2s;
}
.article-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.08); }
.article-card__link {
  display: block;
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
  height: 100%;
}
.article-card__category {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-teal);
  margin-bottom: 0.5rem;
}
.article-card__title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-navy);
  margin-bottom: 0.6rem;
  line-height: 1.35;
}
.article-card__desc {
  font-size: 0.85rem;
  color: var(--color-gray-500);
  line-height: 1.55;
  margin-bottom: 1rem;
}
.article-card__read {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-sky);
}
.article-card__date {
  font-size: 0.75rem;
  color: var(--color-gray-400);
}
.article-card--large .article-card__title { font-size: 1.15rem; }

/* ---- Split section ---- */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.split-section h2 { margin-bottom: 1rem; }
.split-section p { color: var(--color-gray-600); margin-bottom: 1.25rem; }
.feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
}
.feature-list li {
  padding: 0.4rem 0;
  padding-left: 1.25rem;
  position: relative;
  font-size: 0.9rem;
  color: var(--color-gray-600);
}
.feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-teal);
}

/* Metric card */
.metric-card {
  background: var(--color-navy);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 2rem 2.5rem;
  text-align: center;
}
.metric-card__label {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-teal);
  margin-bottom: 0.75rem;
}
.metric-card__value {
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--color-white);
  line-height: 1.3;
  margin-bottom: 1rem;
}
.metric-card__sub {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.5;
}

/* ---- Pill grid ---- */
.pill-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
  justify-content: center;
}
.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1.25rem;
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-navy);
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.pill:hover {
  background: var(--color-teal);
  border-color: var(--color-teal);
  color: var(--color-white);
}
.pill--more {
  background: var(--color-gray-100);
  border-color: var(--color-gray-300);
  color: var(--color-gray-600);
}
.pill--more:hover {
  background: var(--color-sky);
  border-color: var(--color-sky);
  color: var(--color-white);
}

/* ---- Page header ---- */
.page-header {
  background: var(--color-navy);
  color: var(--color-white);
  padding: 3.5rem 0 3rem;
  margin-bottom: 3rem;
}
.page-header h1 { color: var(--color-white); margin-bottom: 0.75rem; }
.page-header__sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.7);
  max-width: 580px;
  margin: 0;
}
.page-header--library { background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%); }
.page-header--index   { background: linear-gradient(135deg, var(--color-navy-mid) 0%, var(--color-navy) 100%); }

/* ---- Breadcrumb ---- */
.breadcrumb { margin-bottom: 1rem; }
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  padding: 0; margin: 0;
  font-size: 0.78rem;
}
.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: rgba(255,255,255,0.5);
  margin: 0;
}
.breadcrumb li a {
  color: rgba(255,255,255,0.65);
  text-decoration: none;
}
.breadcrumb li a:hover { color: var(--color-white); }
.breadcrumb li + li::before {
  content: '/';
  color: rgba(255,255,255,0.3);
}
.breadcrumb li[aria-current="page"] { color: rgba(255,255,255,0.85); }

/* Article-body breadcrumb (different context) */
.content-article .breadcrumb {
  background: var(--color-gray-50);
  padding: 0.75rem 1.5rem;
  margin-bottom: 0;
  border-bottom: 1px solid var(--color-gray-200);
}
.content-article .breadcrumb ol { gap: 0.5rem; }
.content-article .breadcrumb li { color: var(--color-gray-500); }
.content-article .breadcrumb li a { color: var(--color-gray-500); }
.content-article .breadcrumb li a:hover { color: var(--color-navy); }
.content-article .breadcrumb li + li::before { color: var(--color-gray-300); }
.content-article .breadcrumb li[aria-current="page"] { color: var(--color-gray-700); }

/* ---- Article layout ---- */
.article-header {
  padding: 3.5rem 0 2.5rem;
  border-bottom: 1px solid var(--color-gray-200);
  margin-bottom: 2.5rem;
}
.article-header__category {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-teal);
  margin-bottom: 0.75rem;
  text-decoration: none;
}
.article-header__category:hover { color: var(--color-teal-dark); }
.article-header__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 300;
  margin-bottom: 1rem;
  color: var(--color-navy);
}
.article-header__headline {
  font-size: 1.1rem;
  color: var(--color-gray-600);
  margin-bottom: 1rem;
  line-height: 1.6;
}
.article-header__meta {
  font-size: 0.8rem;
  color: var(--color-gray-400);
}

.article-body {
  margin-bottom: 3rem;
}
.article-body h2 {
  font-size: 1.5rem;
  margin: 2.5rem 0 1rem;
  color: var(--color-navy);
  border-bottom: 2px solid var(--color-gray-100);
  padding-bottom: 0.5rem;
}
.article-body h3 {
  font-size: 1.15rem;
  margin: 2rem 0 0.75rem;
  color: var(--color-navy);
}
.article-body ul, .article-body ol {
  margin-bottom: 1.5rem;
}
.article-body li { margin-bottom: 0.5rem; line-height: 1.65; }
.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin: 1.5rem 0;
}
.article-body th, .article-body td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-gray-200);
}
.article-body th {
  background: var(--color-gray-50);
  font-weight: 600;
  color: var(--color-navy);
}
.table-wrap { overflow-x: auto; }

/* Callout */
.callout {
  background: var(--color-gray-50);
  border-left: 4px solid var(--color-teal);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}
.callout--example { border-color: var(--color-sky); }
.callout-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-teal);
  margin-bottom: 0.5rem;
}
.callout--example .callout-label { color: var(--color-sky); }
.callout p { margin: 0; font-size: 0.9rem; line-height: 1.6; color: var(--color-gray-700); }

/* FAQ in article */
.article-faq {
  background: var(--color-gray-50);
  border-radius: var(--radius-md);
  padding: 2rem;
  margin: 2rem auto 3rem;
}
.article-faq__title {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
}

/* ---- FAQ page ---- */
.faq-list { margin: 2rem 0; }
.faq-item {
  border-bottom: 1px solid var(--color-gray-200);
  padding: 1.5rem 0;
}
.faq-item:first-child { border-top: 1px solid var(--color-gray-200); }
.faq-item__q {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 0.75rem;
  line-height: 1.4;
}
.faq-item__a {
  font-size: 0.9rem;
  color: var(--color-gray-600);
  line-height: 1.7;
}
.faq-list--full .faq-item__q { font-size: 1.05rem; }
.faq-list--full .faq-item__a { font-size: 0.95rem; }

/* ---- Library section ---- */
.library-section { margin-bottom: 4rem; }
.library-section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}
.library-section__header h2 { font-size: 1.35rem; }
.library-section__header h2 a {
  color: var(--color-navy);
  text-decoration: none;
}
.library-section__more {
  font-size: 0.825rem;
  font-weight: 500;
  color: var(--color-sky);
  text-decoration: none;
  white-space: nowrap;
  margin-left: 1rem;
}

/* ---- Directory ---- */
.dir-category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 0;
}
.dir-category-card {
  display: block;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: 2rem;
  text-decoration: none;
  transition: box-shadow 0.2s, transform 0.2s;
}
.dir-category-card:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}
.dir-category-card__title {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--color-navy);
  margin-bottom: 0.6rem;
}
.dir-category-card__desc {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  margin-bottom: 1.25rem;
  line-height: 1.55;
}
.dir-category-card__browse {
  font-size: 0.825rem;
  font-weight: 500;
  color: var(--color-sky);
}

.dir-listing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: 1rem;
}
.dir-listing-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}
.dir-listing-card__title {
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 0.6rem;
}
.dir-listing-card__title a {
  color: var(--color-navy);
  text-decoration: none;
}
.dir-listing-card__title a:hover { color: var(--color-teal); }
.dir-listing-card__desc {
  font-size: 0.855rem;
  color: var(--color-gray-500);
  margin-bottom: 0.75rem;
  line-height: 1.55;
}
.dir-listing-card__tag {
  display: inline-flex;
  padding: 0.2rem 0.65rem;
  background: var(--color-gray-100);
  border-radius: 999px;
  font-size: 0.72rem;
  color: var(--color-gray-600);
  margin-bottom: 1rem;
}
.dir-listing-card__more {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-sky);
  text-decoration: none;
}
.dir-fields-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0 2rem;
  font-size: 0.9rem;
}
.dir-fields-table th, .dir-fields-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-gray-200);
}
.dir-fields-table th {
  width: 180px;
  font-weight: 600;
  color: var(--color-gray-700);
  background: var(--color-gray-50);
}
.dir-listing__back { margin-top: 2rem; }

/* ---- Glossary ---- */
.glossary-alpha-nav {
  background: var(--color-gray-50);
  border-bottom: 1px solid var(--color-gray-200);
  padding: 0.75rem 0;
  margin-bottom: 2.5rem;
}
.glossary-alpha-nav .container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}
.glossary-alpha-nav__letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-gray-600);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}
.glossary-alpha-nav__letter:hover {
  background: var(--color-navy);
  color: var(--color-white);
}
.glossary-letter-section { margin-bottom: 3rem; }
.glossary-letter {
  font-size: 2rem;
  font-weight: 200;
  color: var(--color-teal);
  border-bottom: 2px solid var(--color-gray-100);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
}
.glossary-term-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.glossary-term-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
}
.glossary-term-card__term {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
}
.glossary-term-card__term a {
  color: var(--color-navy);
  text-decoration: none;
}
.glossary-term-card__term a:hover { color: var(--color-teal); }
.glossary-term-card__def {
  font-size: 0.83rem;
  color: var(--color-gray-500);
  line-height: 1.55;
  margin: 0;
}

/* Glossary term page */
.glossary-term__label {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-teal);
  margin-bottom: 0.5rem;
}
.glossary-term__term {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 1rem;
}
.glossary-term__short-def {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.75);
  line-height: 1.6;
}
.glossary-term__body { margin-top: 0; padding: 2.5rem 1.5rem; }
.glossary-term__definition { margin-bottom: 2rem; }
.glossary-term__definition p { font-size: 0.95rem; line-height: 1.75; }
.glossary-term__related { margin: 2rem 0; }
.glossary-term__related h2 { font-size: 1.2rem; margin-bottom: 1rem; }
.glossary-related-list { list-style: none; padding: 0; }
.glossary-related-list li {
  display: flex;
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-gray-100);
  font-size: 0.9rem;
  margin: 0;
}
.glossary-related-list a {
  font-weight: 600;
  color: var(--color-navy);
  text-decoration: none;
  white-space: nowrap;
}
.glossary-related-list a:hover { color: var(--color-teal); }
.glossary-related-list__def { color: var(--color-gray-500); }
.glossary-term__back { margin-top: 2rem; }

/* ---- Related articles ---- */
.article-related { margin-top: 4rem; padding-top: 3rem; border-top: 1px solid var(--color-gray-200); margin-bottom: 4rem; }
.article-related__title { font-size: 1.3rem; margin-bottom: 0; }

/* ---- Error ---- */
.content-error {
  padding: 6rem 0;
  text-align: center;
}
.content-error h1 { margin-bottom: 1rem; }
.content-error p { margin-bottom: 2rem; color: var(--color-gray-500); }
.content-error .btn { margin: 0 0.5rem; }

/* ---- Empty state ---- */
.empty-state {
  text-align: center;
  color: var(--color-gray-400);
  padding: 3rem 0;
  font-size: 0.95rem;
}

/* ---- Footer ---- */
.site-footer {
  background: var(--color-navy);
  color: rgba(255,255,255,0.7);
  padding: 4rem 0 0;
}
.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  max-width: var(--site-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
  padding-bottom: 3rem;
}
.site-footer__logo { text-decoration: none; }
.site-footer__name {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: 0.75rem;
}
.site-footer__tagline {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 1rem;
  line-height: 1.55;
}
.site-footer__disclaimer {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
  line-height: 1.6;
  margin: 0;
}
.site-footer__nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.site-footer__col h4 {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-bottom: 1rem;
}
.site-footer__col ul { list-style: none; padding: 0; margin: 0; }
.site-footer__col li { margin-bottom: 0.5rem; }
.site-footer__col a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  transition: color 0.15s;
}
.site-footer__col a:hover { color: var(--color-white); }
.site-footer__bottom {
  background: rgba(0,0,0,0.2);
  padding: 1rem 1.5rem;
  text-align: center;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.3);
  max-width: 100%;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .card-grid--3      { grid-template-columns: repeat(2, 1fr); }
  .article-grid--3   { grid-template-columns: repeat(2, 1fr); }
  .split-section     { grid-template-columns: 1fr; gap: 2rem; }
  .site-footer__inner { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 768px) {
  :root { --section-pad: 3rem; }

  .site-nav, .site-header__cta { display: none; }
  .mobile-menu-toggle { display: flex; }

  .hero { padding: 3rem 0; min-height: auto; }
  .hero__inner { flex-direction: column; gap: 2rem; }
  .hero__badge { width: 100%; max-width: 260px; }

  .card-grid--3      { grid-template-columns: 1fr; }
  .article-grid--3   { grid-template-columns: 1fr; }
  .article-grid--2   { grid-template-columns: 1fr; }
  .dir-category-grid { grid-template-columns: 1fr; }
  .dir-listing-grid  { grid-template-columns: 1fr; }
  .glossary-term-list { grid-template-columns: 1fr; }
  .site-footer__nav  { grid-template-columns: repeat(2, 1fr); }
  .pill-grid         { gap: 0.5rem; }
  .hero__ctas        { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .site-footer__nav  { grid-template-columns: 1fr; }
}