/* ============================================================
   THE REDUNDANCY BRIEF
   Master Stylesheet
   REF: style.css.v1
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,600;1,8..60,300;1,8..60,400&family=DM+Mono:wght@300;400&display=swap');

/* ---- RESET & BASE ---- */

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

:root {
  --ink:        #1a1a18;
  --ink-mid:    #3d3d3a;
  --ink-light:  #7a7a74;
  --ink-faint:  #b0b0a8;
  --paper:      #f5f4f0;
  --paper-rule: #d4d3cc;
  --paper-tint: #eeede8;
  --white:      #ffffff;
  --accent:     #1a1a18;

  --col-max:    680px;
  --col-wide:   820px;
  --gutter:     clamp(20px, 5vw, 48px);

  --f-body:     'Source Serif 4', Georgia, 'Times New Roman', serif;
  --f-display:  'Libre Baskerville', Georgia, serif;
  --f-mono:     'DM Mono', 'Courier New', monospace;

  --size-xs:    0.72rem;
  --size-sm:    0.85rem;
  --size-base:  1rem;
  --size-md:    1.1rem;
  --size-lg:    1.35rem;
  --size-xl:    1.75rem;
  --size-2xl:   2.25rem;
  --size-3xl:   3rem;

  --lh-tight:   1.2;
  --lh-normal:  1.55;
  --lh-loose:   1.75;

  --rule:       1px solid var(--paper-rule);
  --rule-heavy: 2px solid var(--ink);
  --rule-mid:   1px solid var(--ink-mid);
}

html {
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: var(--size-base);
  font-weight: 300;
  line-height: var(--lh-loose);
  min-height: 100vh;
}

/* ---- PUBLICATION WRAPPER ---- */

.pub-wrapper {
  max-width: var(--col-wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.pub-column {
  max-width: var(--col-max);
  margin: 0 auto;
}

/* ---- MASTHEAD ---- */

.masthead {
  border-bottom: var(--rule-heavy);
  padding: 28px 0 16px;
}

.masthead-inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.masthead-title {
  font-family: var(--f-display);
  font-size: var(--size-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
}

.masthead-title:hover {
  color: var(--ink-mid);
}

.masthead-meta {
  font-family: var(--f-mono);
  font-size: var(--size-xs);
  color: var(--ink-light);
  letter-spacing: 0.04em;
  text-align: right;
  line-height: 1.4;
}

.masthead-strapline {
  font-family: var(--f-mono);
  font-size: var(--size-xs);
  color: var(--ink-mid);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 10px 0 0;
  border-top: var(--rule);
  margin-top: 14px;
}

/* ---- NAVIGATION ---- */

.pub-nav {
  border-bottom: var(--rule);
  padding: 14px 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  white-space: nowrap;
}

.pub-nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
  align-items: center;
}

.pub-nav a {
  font-family: var(--f-mono);
  font-size: var(--size-xs);
  color: var(--ink-mid);
  text-decoration: none;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.pub-nav a:hover,
.pub-nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.pub-nav a[aria-current="page"] {
  font-weight: 400;
}

/* ---- PAGE HEADER ---- */

.page-header {
  padding: 52px 0 36px;
  border-bottom: var(--rule);
  margin-bottom: 48px;
}

.page-header-kicker {
  font-family: var(--f-mono);
  font-size: var(--size-xs);
  color: var(--ink-light);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.page-header-kicker span {
  display: inline-block;
  padding: 2px 8px;
  border: var(--rule-mid);
  color: var(--ink-mid);
}

h1.page-title {
  font-family: var(--f-display);
  font-size: clamp(var(--size-xl), 4vw, var(--size-3xl));
  font-weight: 700;
  line-height: var(--lh-tight);
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  color: var(--ink);
  max-width: 560px;
}

.page-header-lede {
  font-size: var(--size-md);
  font-weight: 300;
  font-style: italic;
  color: var(--ink-mid);
  max-width: 520px;
  line-height: var(--lh-normal);
  border-left: 3px solid var(--paper-rule);
  padding-left: 16px;
}

/* ---- CONTENT AREA ---- */

.content-body {
  padding-bottom: 80px;
}

.content-body > * + * {
  margin-top: 1.6em;
}

/* ---- TYPOGRAPHY ---- */

h2 {
  font-family: var(--f-display);
  font-size: var(--size-lg);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: var(--lh-tight);
  margin-top: 3em;
  margin-bottom: 0.6em;
  padding-top: 1.4em;
  border-top: var(--rule);
  color: var(--ink);
}

h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

h3 {
  font-family: var(--f-display);
  font-size: var(--size-base);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-top: 2em;
  margin-bottom: 0.4em;
  color: var(--ink);
}

p {
  font-weight: 300;
  line-height: var(--lh-loose);
  color: var(--ink);
}

p + p {
  margin-top: 1em;
}

strong {
  font-weight: 600;
  color: var(--ink);
}

em {
  font-style: italic;
}

a {
  color: var(--ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--ink-mid);
}

/* ---- BRIEFING NOTE ELEMENTS ---- */

.briefing-note {
  background: var(--paper-tint);
  border-left: 3px solid var(--ink-mid);
  padding: 20px 24px;
  margin: 2em 0;
}

.briefing-note p {
  margin-top: 0.5em;
}

.briefing-note p:first-child {
  margin-top: 0;
}

.briefing-note .note-label {
  font-family: var(--f-mono);
  font-size: var(--size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mid);
  margin-bottom: 8px;
}

/* ---- SEQUENCE / DAY BLOCK ---- */

.sequence-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 0 24px;
  padding: 28px 0;
  border-bottom: var(--rule);
}

.sequence-item:first-child {
  border-top: var(--rule);
}

.sequence-number {
  font-family: var(--f-mono);
  font-size: var(--size-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-light);
  padding-top: 4px;
  line-height: 1.4;
}

.sequence-number strong {
  display: block;
  font-family: var(--f-display);
  font-size: var(--size-lg);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 4px;
}

.sequence-content h3 {
  margin-top: 0;
  font-size: var(--size-base);
  margin-bottom: 10px;
}

/* ---- REFERENCE TABLE ---- */

.ref-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--size-sm);
  margin: 2em 0;
}

.ref-table th {
  font-family: var(--f-mono);
  font-size: var(--size-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mid);
  text-align: left;
  padding: 10px 12px 10px 0;
  border-bottom: var(--rule-heavy);
  font-weight: 400;
}

.ref-table td {
  padding: 12px 12px 12px 0;
  border-bottom: var(--rule);
  vertical-align: top;
  line-height: var(--lh-normal);
}

.ref-table tr:last-child td {
  border-bottom: none;
}

.ref-table .td-label {
  font-weight: 400;
  width: 40%;
}

.ref-table .td-value {
  font-family: var(--f-mono);
  font-size: var(--size-sm);
  color: var(--ink-mid);
}

/* ---- FIGURE / CALLOUT ---- */

.figure-block {
  border: var(--rule-heavy);
  padding: 28px 28px;
  margin: 2.5em 0;
  text-align: center;
}

.figure-block .figure-label {
  font-family: var(--f-mono);
  font-size: var(--size-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-light);
  margin-bottom: 10px;
}

.figure-block .figure-value {
  font-family: var(--f-display);
  font-size: var(--size-3xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--ink);
}

.figure-block .figure-note {
  font-size: var(--size-sm);
  color: var(--ink-mid);
  margin-top: 8px;
  font-style: italic;
}

/* ---- CHECKLIST ---- */

.checklist {
  list-style: none;
  margin: 1.5em 0;
}

.checklist li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 12px;
  padding: 10px 0;
  border-bottom: var(--rule);
  font-size: var(--size-sm);
  line-height: var(--lh-normal);
  align-items: start;
}

.checklist li::before {
  content: '—';
  font-family: var(--f-mono);
  color: var(--ink-light);
  line-height: var(--lh-normal);
}

/* ---- PRODUCT BLOCK ---- */

.product-block {
  background: var(--ink);
  color: var(--paper);
  padding: 40px 40px;
  margin: 3em 0;
}

.product-block .product-label {
  font-family: var(--f-mono);
  font-size: var(--size-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 14px;
}

.product-block h2 {
  font-family: var(--f-display);
  font-size: var(--size-xl);
  font-weight: 700;
  color: var(--paper);
  border-top: none;
  padding-top: 0;
  margin-top: 0;
  margin-bottom: 12px;
}

.product-block p {
  color: var(--ink-faint);
  font-size: var(--size-sm);
  line-height: var(--lh-normal);
}

.product-block .product-price {
  font-family: var(--f-display);
  font-size: var(--size-2xl);
  font-weight: 700;
  color: var(--paper);
  margin: 20px 0 4px;
  letter-spacing: -0.02em;
}

.product-block .product-price-note {
  font-family: var(--f-mono);
  font-size: var(--size-xs);
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  margin-bottom: 28px;
}

.btn-primary {
  display: inline-block;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-mono);
  font-size: var(--size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 14px 28px;
  transition: background 0.15s, color 0.15s;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--paper-tint);
  color: var(--ink);
}

.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--ink);
  font-family: var(--f-mono);
  font-size: var(--size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 12px 24px;
  border: var(--rule-mid);
  transition: background 0.15s, border-color 0.15s;
}

.btn-outline:hover {
  background: var(--paper-tint);
  border-color: var(--ink);
}

/* ---- NAV GRID (homepage) ---- */

.issue-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1px;
  background: var(--paper-rule);
  border: var(--rule);
  margin: 2.5em 0;
}

.issue-card {
  background: var(--paper);
  padding: 24px 24px 28px;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: background 0.12s;
}

.issue-card:hover {
  background: var(--paper-tint);
  color: inherit;
}

.issue-card-ref {
  font-family: var(--f-mono);
  font-size: var(--size-xs);
  color: var(--ink-light);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.issue-card h3 {
  font-family: var(--f-display);
  font-size: var(--size-base);
  font-weight: 700;
  line-height: var(--lh-tight);
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.issue-card p {
  font-size: var(--size-sm);
  color: var(--ink-mid);
  line-height: var(--lh-normal);
  margin: 0;
}

/* ---- FOOTER ---- */

.pub-footer {
  border-top: var(--rule-heavy);
  padding: 28px 0 40px;
  margin-top: 80px;
}

.pub-footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-pub-name {
  font-family: var(--f-display);
  font-size: var(--size-base);
  font-weight: 700;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.footer-small {
  font-family: var(--f-mono);
  font-size: var(--size-xs);
  color: var(--ink-light);
  letter-spacing: 0.04em;
  line-height: 1.6;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: right;
}

.footer-nav a {
  font-family: var(--f-mono);
  font-size: var(--size-xs);
  color: var(--ink-light);
  text-decoration: none;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 0.12s;
}

.footer-nav a:hover {
  color: var(--ink);
}

/* ---- DISCLAIMER ---- */

.disclaimer {
  font-family: var(--f-mono);
  font-size: var(--size-xs);
  color: var(--ink-light);
  letter-spacing: 0.02em;
  line-height: 1.6;
  padding: 20px 0;
  border-top: var(--rule);
  margin-top: 28px;
}

/* ---- UTILITIES ---- */

.mono {
  font-family: var(--f-mono);
}

.text-light {
  color: var(--ink-light);
}

.text-mid {
  color: var(--ink-mid);
}

.rule-above {
  border-top: var(--rule);
  padding-top: 1.5em;
  margin-top: 2em;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ---- RESPONSIVE ---- */

@media (max-width: 600px) {
  :root {
    --gutter: 18px;
  }

  html {
    font-size: 16px;
  }

  .masthead-inner {
    flex-direction: column;
    gap: 4px;
  }

  .masthead-meta {
    text-align: left;
  }

  .pub-nav ul {
    gap: 18px;
  }

  .sequence-item {
    grid-template-columns: 48px 1fr;
    gap: 0 16px;
  }

  .product-block {
    padding: 28px 20px;
  }

  .figure-block {
    padding: 20px;
  }

  .pub-footer-inner {
    flex-direction: column;
  }

  .footer-nav {
    text-align: left;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 12px;
  }

  h1.page-title {
    letter-spacing: -0.02em;
  }

  .issue-grid {
    grid-template-columns: 1fr;
  }
}

@media print {
  body {
    background: white;
    font-size: 11pt;
  }

  .pub-nav,
  .pub-footer,
  .btn-primary,
  .btn-outline {
    display: none;
  }

  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: var(--ink-light);
  }
}