/* ==================================================================== *
 * Coffee Research & Strategy — stylesheet
 *
 * Assembled from:
 *   coffee-report-design-reference.md   (tokens, type roles, tables, metrics, deltas, caveats)
 *   wordmark-design-spec.md             (header/footer wordmark)
 *   site-architecture-and-scaffolding.md §3, §4  (nav links, self-hosted fonts)
 *   tooltip-design-spec.md §6           (gloss-term + crs Tippy theme)
 * ==================================================================== */

/* 1. Fonts — self-hosted (scaffolding §4) */
@font-face {
  font-family: 'Source Serif 4';
  src: url('/assets/fonts/source-serif-4-600.woff2') format('woff2');
  font-weight: 600; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/inter-400.woff2') format('woff2');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/inter-500.woff2') format('woff2');
  font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('/assets/fonts/ibm-plex-mono-400.woff2') format('woff2');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Lexend Exa';
  src: url('/assets/fonts/lexend-exa-700.woff2') format('woff2');
  font-weight: 700; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('/assets/fonts/ibm-plex-sans-400.woff2') format('woff2');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('/assets/fonts/ibm-plex-sans-500.woff2') format('woff2');
  font-weight: 500; font-style: normal; font-display: swap;
}

/* 2. Tokens (design-reference §2, §3) */
:root {
  --navy-ink: #0B1526;
  --navy: #14213D;
  --burgundy: #5C1A2B;
  --gold: #A9812E;
  --paper: #F6F4EE;
  --paper-line: #D8D5C9;
  --ink-gray: #6B6A63;

  --font-serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --font-sans: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --font-wordmark: 'Lexend Exa', var(--font-sans);

  --content-width: 800px;
  --content-pad: 1.5rem;
  --section-gap: 2.75rem;
}

/* 3. Reset / base */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--paper);
  color: var(--navy);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a {
  color: var(--navy);
  text-decoration-color: var(--paper-line);
  text-underline-offset: 0.15em;
}
a:hover { text-decoration-color: var(--navy); }

.wrap {
  width: 100%;
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: var(--content-pad);
}
.site-main {
  flex: 1 0 auto;
  width: 100%;
  padding-block: 3rem;
}

/* 4. Type roles (§3) */
.u-serif { font-family: var(--font-serif); font-weight: 600; }
.u-sans  { font-family: var(--font-sans); }
.u-mono  { font-family: var(--font-mono); }
.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-gray);
}

/* 5. Header band + wordmark (wordmark §3; scaffolding §3) */
.site-header { background-color: var(--navy-ink); width: 100%; }
.site-header__inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1.25rem;
}
.wordmark {
  display: inline-flex;
  flex-direction: column;
  font-family: var(--font-wordmark);
  font-weight: 700;
  text-transform: uppercase;
  text-decoration: none;
  line-height: 1.05;
  letter-spacing: normal;
  color: var(--paper);
}
.wordmark:hover { color: var(--paper); }
.wordmark span { display: block; }
.site-header .wordmark { font-size: 2.225rem; text-align: left; }

/* 6. Nav (scaffolding §3) */
.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
  padding-top: 0.15rem;
}
.site-nav a {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 0.875rem;
  color: var(--paper);
  text-decoration: none;
  white-space: nowrap;
}
.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a[aria-current="page"] { font-weight: 500; color: var(--paper); }

/* 7. Footer (wordmark §4; site-notes contact line) */
.site-footer {
  flex-shrink: 0;
  width: 100%;
  background-color: var(--paper);
  border-top: 0.5px solid var(--paper-line);
  margin-top: 3rem;
}
.site-footer__inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1.5rem;
}
.site-footer__contact {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--ink-gray);
  max-width: 46ch;
}
.site-footer__contact a { color: var(--navy); text-decoration-color: var(--paper-line); }
.site-footer__contact a:hover { text-decoration-color: var(--navy); }
.site-footer .wordmark {
  font-size: 1.375rem;
  color: var(--navy-ink);
  text-align: right;
  flex-shrink: 0;
}
.site-footer .wordmark:hover { color: var(--navy-ink); }

/* 8. Report body components (source of truth; markup in step 3) */
.report-title {
  font-family: var(--font-serif); font-weight: 600;
  font-size: 1.75rem; line-height: 1.2;
  color: var(--navy-ink); margin: 0 0 0.5rem;
}
.report-summary {
  font-family: var(--font-serif); font-weight: 600;
  font-size: 1.125rem; line-height: 1.35;
  color: var(--navy); margin: 0 0 2rem;
}
.section-header {
  font-family: var(--font-serif); font-weight: 600;
  font-size: 1.125rem; color: var(--navy-ink); margin: 0 0 0.75rem;
}
.section-header__num {
  font-family: var(--font-sans); font-weight: 500;
  font-size: 0.6875rem; color: var(--ink-gray);
  margin-right: 0.5rem; letter-spacing: 0.04em;
}
.report-section + .report-section {
  margin-top: var(--section-gap);
  padding-top: var(--section-gap);
  border-top: 0.5px solid var(--paper-line);
}
.metric {
  background-color: #FFFFFF;
  border-left: 3px solid var(--navy);
  padding: 0.65rem 1rem;
  margin: 0.75rem 0;
}
.metric--gold { border-left-color: var(--gold); }
.metric--burgundy { border-left-color: var(--burgundy); }
.metric--navy { border-left-color: var(--navy); }
.metric-label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.6875rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--ink-gray); margin-bottom: 0.2rem;
}
.metric-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem; line-height: 1.1;
  color: var(--navy-ink);
}
.metric-unit { font-size: 0.8125rem; color: var(--ink-gray); }
.delta-up   { font-family: var(--font-mono); color: var(--gold); white-space: nowrap; }
.delta-down { font-family: var(--font-mono); color: var(--burgundy); white-space: nowrap; }
.report-body table { width: 100%; border-collapse: collapse; margin: 1rem 0; }
.report-body thead th {
  font-family: var(--font-sans);
  font-size: 0.6875rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--ink-gray); text-align: left;
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--navy-ink);
}
.report-body tbody td {
  font-family: var(--font-mono);
  font-size: 0.8125rem; color: var(--navy);
  padding: 0.4rem 0.6rem;
  border-bottom: 0.5px solid var(--paper-line);
}
.report-body tbody tr:last-child td { border-bottom: none; }
.report-body th.num, .report-body td.num { text-align: right; }
.report-body td.label { font-family: var(--font-sans); text-align: left; }
.report-body caption, .table-source {
  font-family: var(--font-sans);
  font-size: 0.6875rem; color: var(--ink-gray);
  text-align: left; margin-top: 0.35rem;
}
.caveat {
  border-left: 2px solid var(--ink-gray);
  background: transparent;
  padding: 0.25rem 0 0.25rem 0.9rem;
  margin: 1rem 0;
  font-family: var(--font-sans);
  font-size: 0.875rem; color: var(--ink-gray); font-weight: 400;
}
.hairline {
  border: none;
  border-top: 0.5px solid var(--paper-line);
  margin: var(--section-gap) 0;
}

/* 9. Glossary term + Tippy theme (tooltip §6) */
.gloss-term { border-bottom: 1px dotted var(--ink-gray); cursor: help; }
.gloss-term:hover, .gloss-term:focus { border-bottom-color: var(--navy); outline: none; }
.tippy-box[data-theme~='crs'] {
  background-color: #FFFFFF;
  border: 1px solid var(--paper-line);
  border-radius: 2px;
  box-shadow: none;
  color: var(--navy);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  line-height: 1.5;
  padding: 10px 12px;
  max-width: 280px;
}
.tippy-box[data-theme~='crs'] .gloss-eyebrow {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.6875rem; font-weight: 500;
  letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--ink-gray); margin-bottom: 4px;
}
.tippy-box[data-theme~='crs'] .gloss-body {
  display: block; font-family: var(--font-sans); color: var(--navy);
}
.tippy-box[data-theme~='crs'] .tippy-arrow { display: none; }

/* 10. CSV download link (timeline §3) */
.csv-download {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--navy-ink);
  text-decoration: none;
  border-bottom: 1px solid var(--paper-line);
  padding-bottom: 1px;
  margin-top: 1rem;
}
.csv-download:hover { border-bottom-color: var(--navy-ink); }

/* 11. Responsive */
@media (max-width: 600px) {
  .site-header__inner { flex-direction: column; gap: 0.9rem; }
  .site-nav { padding-top: 0; }
  .site-footer__inner { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .site-footer .wordmark { text-align: left; align-self: flex-start; }
  .report-title { font-size: 1.5rem; }
}

/* 12. Accessibility floor */
:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}