/* ==========================================================================
   Article Heaven — main.css
   Design tokens, base, header, navigation, cards, homepage, footer
   ========================================================================== */

:root {
  /* Color tokens */
  --paper: #FAF8F3;
  --card: #FFFFFF;
  --ink: #22262D;
  --ink-soft: #4E5661;
  --ink-faint: #7A828C;
  --primary: #15604F;
  --primary-dark: #0C4237;
  --primary-tint: #E7F0EC;
  --cta: #A8500F;
  --cta-dark: #8A3F09;
  --cta-tint: #FBEFE3;
  --line: #E6E1D5;
  --line-soft: #EFEBE1;
  --ok: #1E6B45;
  --ok-tint: #E9F3EC;
  --warn: #8A5A00;
  --warn-tint: #FBF3DE;
  --bad: #9B2C2C;
  --bad-tint: #F9ECEC;

  /* Type tokens */
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "Segoe UI Mono", Consolas, monospace;

  /* Layout tokens */
  --container: 1240px;
  --article-w: 780px;
  --pad-x: 20px;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 1px 2px rgba(34,38,45,.05), 0 4px 14px rgba(34,38,45,.06);
  --shadow-lift: 0 2px 4px rgba(34,38,45,.06), 0 10px 26px rgba(34,38,45,.10);
}

/* Base ------------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
html, body { overflow-x: hidden; max-width: 100vw; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--primary-dark); }
h1, h2, h3, h4 { font-family: var(--serif); line-height: 1.2; color: var(--ink); margin: 0 0 .5em; font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.9rem, 4.2vw, 2.7rem); }
h2 { font-size: clamp(1.45rem, 3vw, 1.85rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
ul, ol { padding-left: 1.3em; }
button { font: inherit; cursor: pointer; }
:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 3px; }
::selection { background: var(--primary-tint); }

.container { max-width: var(--container); margin: 0 auto; padding-left: var(--pad-x); padding-right: var(--pad-x); }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--primary); color: #fff; padding: 10px 18px; border-radius: 0 0 8px 0;
  text-decoration: none; font-weight: 600;
}
.skip-link:focus { left: 0; color: #fff; }

/* Eyebrow + labels ------------------------------------------------------- */
.eyebrow {
  font-family: var(--sans); font-size: .72rem; font-weight: 700;
  letter-spacing: .14em; text-transform: uppercase; color: var(--primary);
}
.badge {
  display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; padding: 3px 9px; border-radius: 999px;
  background: var(--primary-tint); color: var(--primary-dark);
}
.badge--demo { background: var(--warn-tint); color: var(--warn); }
.badge--update { background: var(--cta-tint); color: var(--cta-dark); }

/* Buttons ---------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: var(--radius); border: 1px solid transparent;
  font-weight: 700; font-size: .95rem; text-decoration: none; line-height: 1.2;
  transition: background .15s ease, transform .15s ease, box-shadow .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn--cta { background: var(--cta); color: #fff; box-shadow: var(--shadow); }
.btn--cta:hover { background: var(--cta-dark); color: #fff; }
.btn--primary { background: var(--primary); color: #fff; }
.btn--primary:hover { background: var(--primary-dark); color: #fff; }
.btn--ghost { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn--ghost:hover { background: var(--primary-tint); }
.btn--sm { padding: 8px 14px; font-size: .85rem; }

/* Header ----------------------------------------------------------------- */
.topstrip { background: var(--primary-dark); color: #E9F3EC; font-size: .8rem; }
.topstrip .container { display: flex; justify-content: space-between; gap: 16px; padding-top: 6px; padding-bottom: 6px; }
.topstrip a { color: #CFE5DA; text-decoration: none; }
.topstrip a:hover { color: #fff; text-decoration: underline; }
.topstrip__note { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.masthead { background: var(--card); border-bottom: 1px solid var(--line); }
.masthead__row { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 16px 0; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand__mark { flex: 0 0 auto; width: 44px; height: 44px; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name { font-family: var(--serif); font-weight: 700; font-size: 1.55rem; letter-spacing: -.02em; }
.brand__name em { font-style: normal; color: var(--primary); }
.brand__tag { font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-faint); margin-top: 3px; }
.masthead__actions { display: flex; align-items: center; gap: 10px; }
.iconbtn {
  display: inline-flex; align-items: center; gap: 8px; background: none;
  border: 1px solid var(--line); border-radius: var(--radius); padding: 9px 13px;
  color: var(--ink); font-weight: 600; font-size: .88rem;
}
.iconbtn:hover { border-color: var(--primary); color: var(--primary); }
.iconbtn svg { width: 17px; height: 17px; }
.nav-toggle { display: none; }

/* Primary nav + mega menu ------------------------------------------------ */
.mainnav { background: var(--card); border-bottom: 1px solid var(--line); position: relative; z-index: 60; }
.mainnav__list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; }
.mainnav__item { position: relative; }
.mainnav__link {
  display: flex; align-items: center; gap: 6px; padding: 13px 15px;
  color: var(--ink); text-decoration: none; font-weight: 600; font-size: .93rem;
  border-bottom: 3px solid transparent;
}
.mainnav__link:hover, .mainnav__item.is-open > .mainnav__link { color: var(--primary); border-bottom-color: var(--primary); }
.mainnav__caret {
  width: 0; height: 0; border-left: 4px solid transparent; border-right: 4px solid transparent;
  border-top: 5px solid currentColor; margin-top: 2px; transition: transform .15s ease;
}
.mainnav__item.is-open .mainnav__caret { transform: rotate(180deg); }
.megamenu {
  position: absolute; left: 0; top: 100%; min-width: 520px;
  background: var(--card); border: 1px solid var(--line); border-top: 3px solid var(--primary);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg); box-shadow: var(--shadow-lift);
  padding: 18px 20px; display: none; z-index: 70;
}
.mainnav__item.is-open .megamenu { display: block; }
.megamenu__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px 26px; list-style: none; margin: 0; padding: 0; }
.megamenu__grid a {
  display: block; padding: 7px 8px; border-radius: 6px; text-decoration: none;
  color: var(--ink); font-size: .9rem;
}
.megamenu__grid a:hover { background: var(--primary-tint); color: var(--primary-dark); }
.megamenu__hub {
  grid-column: 1 / -1; margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--line);
}
.megamenu__hub a { color: var(--primary); font-weight: 700; }

/* Search overlay --------------------------------------------------------- */
.search-overlay {
  position: fixed; inset: 0; background: rgba(20,26,24,.55); z-index: 150;
  display: none; padding: 8vh var(--pad-x) 0;
}
.search-overlay.is-open { display: block; }
.search-panel {
  max-width: 680px; margin: 0 auto; background: var(--card);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lift); padding: 20px;
}
.search-panel__row { display: flex; gap: 10px; }
.search-panel input[type="search"] {
  flex: 1; font: inherit; padding: 12px 14px; border: 2px solid var(--line);
  border-radius: var(--radius); background: var(--paper);
}
.search-panel input[type="search"]:focus { border-color: var(--primary); outline: none; }
.search-results { margin-top: 14px; max-height: 55vh; overflow-y: auto; }
.search-hit { display: flex; gap: 12px; padding: 10px; border-radius: var(--radius); text-decoration: none; color: var(--ink); }
.search-hit:hover { background: var(--primary-tint); }
.search-hit img { width: 52px; height: 52px; object-fit: contain; border: 1px solid var(--line-soft); border-radius: 6px; background: #fff; flex: 0 0 auto; }
.search-hit__title { font-weight: 700; font-size: .95rem; }
.search-hit__meta { font-size: .8rem; color: var(--ink-faint); }
.search-hit mark { background: var(--cta-tint); color: inherit; padding: 0 2px; border-radius: 3px; }
.search-empty { color: var(--ink-soft); font-size: .95rem; padding: 10px; }

/* Hero / featured -------------------------------------------------------- */
.home-hero { padding: 34px 0 10px; }
.home-hero__kicker { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin-bottom: 18px; }
.home-hero__kicker p { color: var(--ink-soft); margin: 0; max-width: 62ch; }
.hero-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 22px; align-items: stretch; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow); overflow: hidden; }
.card a.card__link { text-decoration: none; color: inherit; display: block; height: 100%; }
.card:hover { box-shadow: var(--shadow-lift); }
.card__media { background: linear-gradient(160deg, var(--primary-tint), #fff 70%); border-bottom: 1px solid var(--line-soft); }
.card__media img { width: 100%; aspect-ratio: 16 / 10; object-fit: contain; padding: 18px; }
.card__body { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 8px; }
.card__title { font-family: var(--serif); font-weight: 700; font-size: 1.12rem; line-height: 1.3; margin: 0; }
.card--feature .card__title { font-size: clamp(1.35rem, 2.6vw, 1.7rem); }
.card__excerpt { color: var(--ink-soft); font-size: .92rem; margin: 0; }
.card__meta { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: .78rem; color: var(--ink-faint); margin-top: auto; padding-top: 6px; }
.card__meta strong { color: var(--ink-soft); font-weight: 600; }

.stack { display: grid; gap: 16px; }
.card--horizontal a.card__link { display: grid; grid-template-columns: 130px 1fr; }
.card--horizontal .card__media { border-bottom: 0; border-right: 1px solid var(--line-soft); }
.card--horizontal .card__media img { aspect-ratio: 1/1; padding: 12px; }
.card--horizontal .card__body { padding: 12px 14px; }
.card--horizontal .card__title { font-size: 1rem; }

.card--compact a.card__link { display: grid; grid-template-columns: 64px 1fr; gap: 12px; align-items: center; padding: 10px; }
.card--compact .card__media { border: 1px solid var(--line-soft); border-radius: 8px; }
.card--compact .card__media img { aspect-ratio: 1/1; padding: 8px; }
.card--compact .card__title { font-size: .93rem; font-family: var(--sans); font-weight: 700; }

.card--ranked a.card__link { display: grid; grid-template-columns: auto 64px 1fr; gap: 12px; align-items: center; padding: 10px 14px; }
.card--ranked .rank {
  font-family: var(--serif); font-size: 1.5rem; font-weight: 700; color: var(--line);
  -webkit-text-stroke: 1px var(--ink-faint); min-width: 30px; text-align: center;
}

/* Sections --------------------------------------------------------------- */
.section { padding: 34px 0; }
.section--tint { background: #F3F0E8; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section__head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 18px; flex-wrap: wrap; }
.section__head h2 { margin: 0; }
.section__head .more { font-size: .9rem; font-weight: 700; text-decoration: none; white-space: nowrap; }
.section__head .more::after { content: " →"; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }

/* Category chips --------------------------------------------------------- */
.chipwrap { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px; padding: 9px 15px;
  background: var(--card); border: 1px solid var(--line); border-radius: 999px;
  text-decoration: none; color: var(--ink); font-weight: 600; font-size: .88rem;
}
.chip:hover { border-color: var(--primary); color: var(--primary-dark); background: var(--primary-tint); }
.chip small { color: var(--ink-faint); font-weight: 500; }

/* Tabs ------------------------------------------------------------------- */
.tabs { border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--card); overflow: hidden; }
.tabs__list { display: flex; margin: 0; padding: 0; list-style: none; border-bottom: 1px solid var(--line); background: var(--paper); }
.tabs__tab {
  flex: 1; background: none; border: 0; padding: 12px 10px; font-weight: 700; font-size: .9rem;
  color: var(--ink-soft); border-bottom: 3px solid transparent;
}
.tabs__tab[aria-selected="true"] { color: var(--primary-dark); border-bottom-color: var(--primary); background: var(--card); }
.tabs__panel { padding: 14px; }
.tabs__panel[hidden] { display: none; }

/* Editorial band --------------------------------------------------------- */
.method-band { display: grid; grid-template-columns: 1.2fr 1fr; gap: 26px; align-items: center; }
.method-band__list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.method-band__list li { display: grid; grid-template-columns: 26px 1fr; gap: 10px; align-items: start; }
.method-band__list svg { width: 22px; height: 22px; color: var(--primary); margin-top: 2px; }

/* Newsletter placeholder ------------------------------------------------- */
.newsletter { background: var(--primary-dark); color: #E9F3EC; border-radius: var(--radius-lg); padding: 26px; }
.newsletter h2, .newsletter h3 { color: #fff; }
.newsletter form { display: flex; gap: 10px; flex-wrap: wrap; }
.newsletter input[type="email"] { flex: 1 1 240px; padding: 12px 14px; border-radius: var(--radius); border: 0; font: inherit; }
.newsletter small { color: #BCD6CB; display: block; margin-top: 10px; }

/* Footer ----------------------------------------------------------------- */
.footer { background: #14211D; color: #C6D3CC; margin-top: 40px; font-size: .9rem; }
.footer a { color: #DCE8E1; text-decoration: none; }
.footer a:hover { color: #fff; text-decoration: underline; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 28px; padding: 40px 0 26px; }
.footer h2 { color: #fff; font-size: .82rem; font-family: var(--sans); letter-spacing: .12em; text-transform: uppercase; margin-bottom: 12px; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.footer__brandname { font-family: var(--serif); font-size: 1.3rem; color: #fff; font-weight: 700; }
.footer__legal { border-top: 1px solid rgba(255,255,255,.12); padding: 18px 0 26px; font-size: .8rem; color: #93A69D; }
.footer__legal p { margin: 0 0 8px; }

/* Breadcrumbs ------------------------------------------------------------ */
.crumbs { font-size: .82rem; color: var(--ink-faint); margin: 18px 0 6px; }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 4px; margin: 0; padding: 0; }
.crumbs li + li::before { content: "›"; margin: 0 6px; color: var(--line); }
.crumbs a { color: var(--ink-soft); text-decoration: none; }
.crumbs a:hover { color: var(--primary); text-decoration: underline; }

/* Pagination ------------------------------------------------------------- */
.pagination { display: flex; justify-content: center; gap: 8px; margin: 30px 0 8px; flex-wrap: wrap; }
.pagination a, .pagination span {
  min-width: 40px; padding: 8px 12px; text-align: center; border-radius: var(--radius);
  border: 1px solid var(--line); background: var(--card); text-decoration: none; color: var(--ink); font-weight: 600;
}
.pagination .is-current { background: var(--primary); border-color: var(--primary); color: #fff; }
.pagination a:hover { border-color: var(--primary); color: var(--primary-dark); }

/* Layout with sidebar ---------------------------------------------------- */
.layout { display: grid; grid-template-columns: 2fr 1fr; gap: 34px; align-items: start; padding-bottom: 30px; }
.sidebar { display: grid; gap: 20px; }
.widget { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 18px; }
.widget h2 { font-size: 1rem; font-family: var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 12px; }
.widget ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.widget--note { background: var(--warn-tint); border-color: #EAD9AE; font-size: .85rem; color: #5C4A15; }
.widget--note h2 { color: var(--warn); }
.widget form.sidesearch { display: flex; gap: 8px; }
.widget form.sidesearch input { flex: 1; padding: 9px 11px; border: 1px solid var(--line); border-radius: var(--radius); font: inherit; background: var(--paper); }

/* Notices ---------------------------------------------------------------- */
.notice { border-radius: var(--radius); padding: 13px 16px; font-size: .9rem; margin: 0 0 1.1em; border: 1px solid; }
.notice--disclosure { background: var(--cta-tint); border-color: #EBD3B7; color: #6B4213; }
.notice--medical { background: var(--primary-tint); border-color: #CBDFD6; color: var(--primary-dark); }
.notice--demo { background: var(--warn-tint); border-color: #EAD9AE; color: #5C4A15; }
.notice--unverified { background: #F4F3EF; border-color: var(--line); color: var(--ink-soft); font-style: italic; }

/* 404 -------------------------------------------------------------------- */
.errpage { text-align: center; padding: 60px 0 30px; }
.errpage .bignum { font-family: var(--serif); font-size: clamp(4rem, 12vw, 7rem); color: var(--primary-tint); -webkit-text-stroke: 2px var(--primary); line-height: 1; }

/* Utility ---------------------------------------------------------------- */
.muted { color: var(--ink-soft); }
.small { font-size: .85rem; }
.center { text-align: center; }
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}