/* =========================================================
   affordableshipping.com — Design System
   Concept: "The Manifest" — a postal ledger / rate-stamp
   aesthetic. Ink navy + ledger paper + brass rate-stamp gold,
   with a stamp-red used only for savings/alerts.
   ========================================================= */

:root {
  --ink: #12213e;
  --ink-soft: #2c3a5c;
  --paper: #f5f7f5;
  --paper-dim: #eceee9;
  --panel: #ffffff;
  --brass: #a9834d;
  --brass-dark: #7c5f37;
  --stamp: #b23a32;
  --line: #d8dcd6;
  --line-strong: #b7bcb4;
  --text: #1a2436;
  --text-soft: #4c5567;
  --radius: 3px;

  --font-display: "Oswald", "Arial Narrow", sans-serif;
  --font-body: "Source Serif 4", Georgia, serif;
  --font-mono: "JetBrains Mono", "Courier New", monospace;
}

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

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

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

a { color: var(--ink); text-decoration-color: var(--brass); text-underline-offset: 3px; }
a:hover { color: var(--brass-dark); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--ink);
  line-height: 1.15;
  font-weight: 600;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2rem, 4vw, 3.1rem); letter-spacing: 0.01em; }
h2 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); }
h3 { font-size: 1.2rem; }

p { margin: 0 0 1.1em; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 2px;
}

/* ---------- Ruler-tick divider (signature motif) ---------- */
.ruler {
  height: 14px;
  background-image: repeating-linear-gradient(
    to right,
    var(--line-strong) 0,
    var(--line-strong) 1px,
    transparent 1px,
    transparent 12px
  ),
  repeating-linear-gradient(
    to right,
    var(--ink) 0,
    var(--ink) 1px,
    transparent 1px,
    transparent 60px
  );
  background-size: 100% 8px, 100% 14px;
  background-position: bottom, bottom;
  background-repeat: repeat-x;
  border-bottom: 1px solid var(--line-strong);
  margin: 0;
}

.ruler-wide { height: 20px; }

/* ---------- Header ---------- */
.site-header {
  background: var(--ink);
  color: var(--paper);
  border-bottom: 4px solid var(--brass);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--paper);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  white-space: nowrap;
}
.brand:hover { color: var(--paper); }

.brand-mark {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.main-nav { display: flex; gap: 22px; flex-wrap: wrap; }
.main-nav a {
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-decoration: none;
  opacity: 0.85;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}
.main-nav a:hover { opacity: 1; border-bottom-color: var(--brass); }

.nav-search {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--paper);
  opacity: 0.85;
  text-decoration: none;
  border: 1px solid rgba(245,247,245,0.35);
  padding: 6px 10px;
  border-radius: var(--radius);
}
.nav-search:hover { opacity: 1; border-color: var(--brass); color: var(--paper); }

/* ---------- Breadcrumbs ---------- */
.breadcrumbs {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-soft);
  padding: 14px 0;
}
.breadcrumbs a { color: var(--text-soft); text-decoration: none; }
.breadcrumbs a:hover { color: var(--brass-dark); }
.breadcrumbs span[aria-hidden] { margin: 0 6px; opacity: 0.5; }

/* ---------- Hero (rate-stamp label) ---------- */
.hero {
  background: var(--ink);
  color: var(--paper);
  padding: 64px 0 56px;
  position: relative;
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 14px;
  display: block;
}

.hero h1 { color: var(--paper); margin-bottom: 18px; }

.hero p.lede {
  font-size: 1.15rem;
  color: #cfd6e6;
  max-width: 46ch;
  margin-bottom: 26px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Postal rate-stamp graphic */
.rate-stamp {
  width: 260px;
  height: 260px;
  margin: 0 auto;
  position: relative;
}
.rate-stamp svg { width: 100%; height: 100%; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 12px 22px;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1px solid transparent;
}
.btn-primary { background: var(--brass); color: var(--ink); font-weight: 700; }
.btn-primary:hover { background: #bd9863; color: var(--ink); }
.btn-ghost { border-color: rgba(245,247,245,0.4); color: var(--paper); }
.btn-ghost:hover { border-color: var(--brass); color: var(--paper); }
.btn-outline { border-color: var(--ink); color: var(--ink); }
.btn-outline:hover { background: var(--ink); color: var(--paper); }

/* ---------- Sections ---------- */
.section { padding: 56px 0; }
.section-tight { padding: 36px 0; }
.section-alt { background: var(--paper-dim); }

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.section-head .kicker {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--brass-dark);
}

.section-head a.see-all {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ---------- Card grid ---------- */
.grid {
  display: grid;
  gap: 22px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--ink);
  border-radius: var(--radius);
  padding: 24px;
}
.card h3 { margin-bottom: 10px; }
.card p { color: var(--text-soft); font-size: 0.95rem; margin-bottom: 14px; }
.card .tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brass-dark);
  display: block;
  margin-bottom: 8px;
}
.card a.card-link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.hub-card { border-top-color: var(--brass); }

/* ---------- Article layout ---------- */
.article-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-soft);
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.sourcing-note {
  font-size: 0.82rem;
  color: var(--text-soft);
  margin: -18px 0 26px;
}
.sourcing-note a {
  color: var(--text-soft);
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
}
.sourcing-note a:hover {
  color: var(--brass-dark);
  text-decoration-color: var(--brass);
}

.quick-answer {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 4px solid var(--brass);
  padding: 22px 26px;
  border-radius: var(--radius);
  margin-bottom: 32px;
}
.quick-answer .tag { color: var(--brass-dark); }

.key-takeaways {
  background: var(--ink);
  color: var(--paper);
  padding: 26px 28px;
  border-radius: var(--radius);
  margin-bottom: 32px;
}
.key-takeaways h2 { color: var(--paper); font-size: 1.05rem; margin-bottom: 14px; }
.key-takeaways ul { margin: 0; padding-left: 20px; }
.key-takeaways li { margin-bottom: 8px; color: #dfe4ee; }

.toc {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 36px;
  background: var(--paper-dim);
}
.toc .tag { color: var(--brass-dark); }
.toc ol { margin: 10px 0 0; padding-left: 20px; font-family: var(--font-mono); font-size: 0.88rem; }
.toc li { margin-bottom: 6px; }

.article-body h2 {
  margin-top: 2.2em;
  padding-top: 0.6em;
  border-top: 1px solid var(--line);
}
.article-body h3 { margin-top: 1.6em; }
.article-body ul, .article-body ol { padding-left: 22px; margin-bottom: 1.2em; }
.article-body li { margin-bottom: 6px; }

.callout-mistake {
  background: #fbeceb;
  border-left: 4px solid var(--stamp);
  padding: 16px 20px;
  border-radius: var(--radius);
  margin: 20px 0;
  font-size: 0.95rem;
}
.callout-mistake strong { color: var(--stamp); }

.callout-update {
  background: var(--panel);
  border-left: 4px solid var(--brass);
  padding: 16px 20px;
  border-radius: var(--radius);
  margin: 20px 0;
  font-size: 0.95rem;
}
.callout-update strong { color: var(--brass-dark); }

/* Data table */
table.rate-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  margin: 24px 0;
}
table.rate-table th, table.rate-table td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
}
table.rate-table th {
  background: var(--ink);
  color: var(--paper);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.74rem;
}
table.rate-table tr:nth-child(even) td { background: var(--paper-dim); }

/* ---------- FAQ ---------- */
.faq-item {
  border-bottom: 1px solid var(--line);
  padding: 20px 0;
}
.faq-item h3 { margin-bottom: 8px; font-size: 1.05rem; }
.faq-item p { color: var(--text-soft); margin-bottom: 6px; }

/* ---------- Glossary ---------- */
.glossary-entry {
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
}
.glossary-entry dt {
  font-family: var(--font-display);
  text-transform: uppercase;
  color: var(--ink);
  font-size: 1.05rem;
  margin-bottom: 6px;
}
.glossary-entry dd { margin: 0; color: var(--text-soft); }
.glossary-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 30px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.glossary-jump a {
  border: 1px solid var(--line);
  padding: 4px 10px;
  border-radius: var(--radius);
  text-decoration: none;
}

/* ---------- Calculator tool ---------- */
.calc-wrap {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.calc-inputs, .calc-results { padding: 32px; }
.calc-inputs { border-right: 1px solid var(--line); }
.calc-results { background: var(--ink); color: var(--paper); }

.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  color: var(--text-soft);
}
.field-row { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.field input, .field select {
  width: 100%;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--text);
}
.field input:focus, .field select:focus { border-color: var(--brass); }

#calc-run {
  width: 100%;
  background: var(--ink);
  color: var(--paper);
  border: none;
  padding: 13px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.85rem;
  border-radius: var(--radius);
  cursor: pointer;
  margin-top: 8px;
}
#calc-run:hover { background: var(--brass-dark); }

.result-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid rgba(245,247,245,0.15);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}
.result-row .val { color: var(--brass); font-weight: 700; }
.result-headline {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: #cfd6e6;
  margin-bottom: 4px;
}
.result-big { font-family: var(--font-mono); font-size: 2.1rem; color: var(--brass); margin-bottom: 20px; }
.calc-note { font-size: 0.78rem; color: #a9b2c6; margin-top: 18px; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: #b7c0d6;
  padding: 48px 0 28px;
  margin-top: 64px;
  border-top: 4px solid var(--brass);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 34px;
}
.footer-grid h4 {
  color: var(--paper);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 9px; }
.footer-grid a {
  color: #b7c0d6;
  text-decoration: none;
  font-size: 0.88rem;
}
.footer-grid a:hover { color: var(--brass); }
.footer-bottom {
  border-top: 1px solid rgba(245,247,245,0.12);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: #8b93a8;
}
.footer-bottom a { color: #8b93a8; }

/* ---------- Figures / Diagrams ---------- */
figure.diagram {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px 20px;
  margin: 32px 0;
}
figure.diagram.on-dark {
  background: var(--ink);
  border-color: var(--ink);
}
figure.diagram svg { width: 100%; height: auto; display: block; }
figure.diagram figcaption {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-soft);
  text-align: center;
  margin-top: 14px;
  letter-spacing: 0.02em;
}
figure.diagram.on-dark figcaption { color: #a9b2c6; }

/* ---------- Utility ---------- */
.mt-0 { margin-top: 0; }
.text-soft { color: var(--text-soft); }
.center { text-align: center; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero .container { grid-template-columns: 1fr; }
  .rate-stamp { width: 180px; height: 180px; }
  .grid-3, .grid-5 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .calc-grid { grid-template-columns: 1fr; }
  .calc-inputs { border-right: none; border-bottom: 1px solid var(--line); }
  .main-nav { display: none; }
}
@media (max-width: 560px) {
  .grid-3, .grid-5, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}