/* Signalpost — visual system
   Palette:
     --ink:      #1B2430  deep navy-charcoal
     --paper:    #F6F4EF  warm neutral paper
     --paper-2:  #ECE8DF  deeper paper for cards
     --amber:    #7A5210  dark amber (WCAG AA on paper)
     --slate:    #3A4654  secondary text / links
     --line:     #D8D2C4  hairline rule color
   Type:
     Display: 'Space Grotesk' (headlines, eyebrows, nav)
     Body:    'Source Serif 4' (article body)
     Mono:    'IBM Plex Mono' (labels, meta, tabs)
*/

:root {
  --ink: #1B2430;
  --paper: #F6F4EF;
  --paper-2: #ECE8DF;
  --amber: #7A5210;
  --slate: #3A4654;
  --line: #D8D2C4;
  --max: 760px;
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 18px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { color: var(--slate); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--amber); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--amber); outline-offset: 3px;
}

h1, h2, h3, .display {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.mono { font-family: 'IBM Plex Mono', ui-monospace, monospace; letter-spacing: 0.04em; }

.eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}
.eyebrow::before { content: ""; width: 14px; height: 1px; background: var(--amber); flex-shrink: 0; }
h2.eyebrow { font-size: 12.5px; line-height: 1.4; letter-spacing: 0.12em; }

/* ---- Header / nav ---- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(246, 244, 239, 0.92);
  backdrop-filter: saturate(140%) blur(6px);
  position: sticky;
  top: 0;
  z-index: 20;
}
.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 21px;
  color: var(--ink);
  text-decoration: none;
  display: flex;
  align-items: baseline;
  gap: 3px;
  z-index: 25;
}
.brand .dot { color: var(--amber); }

nav.main-nav {
  display: flex;
  gap: 26px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13.5px;
}
nav.main-nav a {
  color: var(--ink);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
nav.main-nav a:hover { color: var(--amber); border-bottom-color: var(--amber); }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 3px;
  cursor: pointer;
  padding: 0;
  align-items: center;
  justify-content: center;
  z-index: 25;
}
.nav-toggle .bars {
  width: 18px;
  height: 12px;
  position: relative;
}
.nav-toggle .bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.2s ease, opacity 0.2s ease, top 0.2s ease;
}
.nav-toggle .bars span:nth-child(1) { top: 0; }
.nav-toggle .bars span:nth-child(2) { top: 5.5px; }
.nav-toggle .bars span:nth-child(3) { top: 11px; }
.nav-open .nav-toggle .bars span:nth-child(1) { top: 5.5px; transform: rotate(45deg); }
.nav-open .nav-toggle .bars span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle .bars span:nth-child(3) { top: 5.5px; transform: rotate(-45deg); }

@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; }
  nav.main-nav {
    position: fixed;
    inset: 0;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 34px;
    background: var(--paper);
    font-size: 20px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.28s ease, opacity 0.22s ease;
  }
  .nav-open nav.main-nav {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
}

/* ---- Hero ---- */
.hero { max-width: 1080px; margin: 0 auto; padding: 64px 24px 48px; border-bottom: 1px solid var(--line); }
.hero h1 { font-size: clamp(30px, 6vw, 54px); max-width: 16ch; margin: 16px 0 18px; }
.hero p.lede { font-family: 'Source Serif 4', serif; font-size: clamp(16px, 2.4vw, 20px); color: var(--slate); max-width: 54ch; margin: 0; }

/* ---- Card catalog grid ---- */
.catalog { max-width: 1080px; margin: 0 auto; padding: 44px 24px 80px; }
.catalog-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 26px; flex-wrap: wrap; gap: 10px; }
.card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (max-width: 680px) { .card-grid { grid-template-columns: 1fr; } }
.card {
  background: var(--paper);
  padding: 28px 26px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 11px;
  transition: background 0.15s ease, transform 0.15s ease;
}
.card:hover { background: var(--paper-2); }
@media (hover: hover) {
  .card:hover { transform: translateY(-1px); }
}
.card .idx { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--slate); }
.card h3 { font-size: 20px; margin: 0; }
.card h3 a { color: var(--ink); text-decoration: none; }
.card h3 a:hover { color: var(--amber); }
.card p { font-size: 15px; color: var(--slate); margin: 0; line-height: 1.55; }
.card .tag { font-family: 'IBM Plex Mono', monospace; font-size: 11.5px; color: var(--amber); text-transform: uppercase; letter-spacing: 0.08em; }

/* ---- Article page ---- */
.article-wrap { max-width: var(--max); margin: 0 auto; padding: 48px 20px 80px; }
.article-meta { display: flex; gap: 12px; align-items: center; font-family: 'IBM Plex Mono', monospace; font-size: 12.5px; color: var(--slate); margin-bottom: 14px; flex-wrap: wrap; }
.article-meta time { color: var(--slate); }
.article-byline { font-family: 'IBM Plex Mono', monospace; font-size: 12.5px; color: var(--slate); margin: 0 0 18px; }
.article-byline a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--line); }
.article-byline a:hover { color: var(--amber); border-bottom-color: var(--amber); }
.article-wrap h1 { font-size: clamp(27px, 6vw, 42px); margin: 0 0 20px; }
.article-wrap .lede { font-size: clamp(17px, 2.4vw, 20px); color: var(--slate); margin-bottom: 32px; padding-bottom: 32px; border-bottom: 1px solid var(--line); }
.author-box {
  margin-top: 40px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  background: var(--paper-2);
}
.author-box h2 { font-size: 15px; margin: 0 0 8px; font-family: 'IBM Plex Mono', monospace; text-transform: uppercase; letter-spacing: 0.06em; font-weight: 500; color: var(--slate); }
.author-box p { margin: 0; font-size: 15.5px; color: var(--ink); line-height: 1.55; }
.author-box a { color: var(--ink); }
.field-note {
  margin: 28px 0;
  padding: 16px 18px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: transparent;
}
.field-note .label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber);
  display: block;
  margin-bottom: 8px;
}
.field-note p { margin: 0; font-size: 15.5px; color: var(--ink); }

/* ---- Distinct article formats ---- */
.day-block {
  margin: 22px 0;
  padding: 18px 18px 8px;
  border: 1px solid var(--line);
  background: #fff;
}
.day-block h3 {
  margin: 0 0 10px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--amber);
  font-weight: 500;
}
.template-sheet {
  margin: 28px 0;
  padding: 22px 20px;
  background: var(--paper-2);
  border: 1px dashed var(--slate);
}
.template-sheet h3 { margin-top: 0; }
.template-sheet pre,
.template-sheet .sheet-lines {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13.5px;
  line-height: 1.7;
  white-space: pre-wrap;
  margin: 0;
  color: var(--ink);
}
.case-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin: 0 0 28px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12.5px;
}
.case-meta div span {
  display: block;
  color: var(--slate);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
  font-size: 11px;
}
.worksheet-row {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 8px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.worksheet-row.head {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--slate);
}
@media (max-width: 640px) {
  .worksheet-row { grid-template-columns: 1fr; }
}
.form-success {
  margin: 22px 0 0;
  padding: 16px 18px;
  border-left: 3px solid var(--amber);
  background: var(--paper-2);
}
.form-success p { margin: 0; }
.article-body .scenario {
  margin: 24px 0;
  padding: 18px 18px 6px;
  background: var(--paper-2);
  border: 1px solid var(--line);
}
.article-body .scenario h3 { margin-top: 0; }
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 22px;
  font-size: 15.5px;
}
.article-body th, .article-body td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
.article-body th {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--paper-2);
  font-weight: 500;
}
.article-body h2 { font-size: clamp(21px, 3.6vw, 25px); margin: 40px 0 14px; }
.article-body h3 { font-size: 18px; margin: 28px 0 10px; font-family: 'IBM Plex Mono', monospace; text-transform: uppercase; letter-spacing: 0.04em; font-weight: 500; color: var(--slate); }
.article-body p { margin: 0 0 18px; font-size: clamp(16px, 2.1vw, 18px); }
.article-body ul, .article-body ol { margin: 0 0 20px; padding-left: 22px; }
.article-body li { margin-bottom: 8px; }
.pull { border-left: 3px solid var(--amber); padding: 4px 0 4px 18px; margin: 30px 0; font-size: clamp(17px, 2.6vw, 20px); color: var(--ink); font-style: italic; }
.article-footer { margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-family: 'IBM Plex Mono', monospace; font-size: 12.5px; }
.article-footer a { color: var(--ink); max-width: 46%; }
@media (max-width: 480px) { .article-footer a { max-width: 100%; } }

/* ---- Simple page (about / contact / legal) ---- */
.page-wrap { max-width: var(--max); margin: 0 auto; padding: 56px 20px 80px; }
.page-wrap h1 { font-size: clamp(27px, 6vw, 42px); margin: 14px 0 26px; }
.page-wrap h2 { font-size: 21px; margin: 32px 0 12px; }
.page-wrap p, .page-wrap li { margin: 0 0 16px; font-size: clamp(16px, 2.1vw, 18px); }
.page-wrap ul { padding-left: 22px; }

.contact-form { display: flex; flex-direction: column; gap: 16px; max-width: 480px; margin-top: 26px; }
.contact-form label { font-family: 'IBM Plex Mono', monospace; font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--slate); }
.contact-form input, .contact-form textarea {
  font-family: 'Source Serif 4', serif;
  font-size: 16px;
  padding: 12px 12px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 3px;
  width: 100%;
}
.contact-form button {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--ink);
  color: var(--paper);
  border: none;
  padding: 14px 20px;
  cursor: pointer;
  width: fit-content;
  min-height: 44px;
  transition: background 0.15s ease;
}
.contact-form button:hover { background: var(--amber); color: #fff; }
.contact-form button:focus-visible { color: #fff; }

/* ---- Footer ---- */
.site-footer { border-top: 1px solid var(--line); padding: 36px 24px; }
.footer-inner { max-width: 1080px; margin: 0 auto; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; font-family: 'IBM Plex Mono', monospace; font-size: 12.5px; color: var(--slate); }
.footer-inner a { color: var(--slate); }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; }

/* Touch targets */
@media (max-width: 720px) {
  nav.main-nav a { padding: 10px 0; }
}

/* ---- Homepage editorial block ---- */
.home-editorial {
  max-width: 1080px;
  margin: 0 auto;
  padding: 8px 20px 56px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 36px;
  border-bottom: 1px solid var(--line);
}
.home-editorial h2 {
  font-size: clamp(22px, 3.2vw, 28px);
  margin: 10px 0 16px;
}
.home-editorial p {
  margin: 0 0 14px;
  color: var(--ink);
  font-size: clamp(16px, 2vw, 17.5px);
}
.home-editorial .aside-card {
  background: var(--paper-2);
  border: 1px solid var(--line);
  padding: 22px 20px;
  align-self: start;
}
.home-editorial .aside-card h3 {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
  color: var(--amber);
  margin: 0 0 12px;
}
.home-editorial .aside-card ul {
  margin: 0;
  padding-left: 18px;
}
.home-editorial .aside-card li {
  margin-bottom: 10px;
  font-size: 15.5px;
  color: var(--ink);
}
@media (max-width: 800px) {
  .home-editorial { grid-template-columns: 1fr; padding-bottom: 40px; }
}

/* ---- Cookie consent ---- */
.cookie-consent {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 1000;
  max-width: 640px;
  margin: 0 auto;
  background: var(--ink);
  color: var(--paper);
  padding: 18px 18px 16px;
  border: 1px solid #2c3644;
  box-shadow: 0 12px 40px rgba(27, 36, 48, 0.28);
}
.cookie-consent p {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.5;
  font-family: 'Source Serif 4', Georgia, serif;
}
.cookie-consent a {
  color: #f0d9a8;
}
.cookie-consent a:hover { color: #fff; }
.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.cookie-actions button {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  min-height: 40px;
  padding: 10px 14px;
  cursor: pointer;
  border: 1px solid transparent;
}
.cookie-actions .cookie-accept {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}
.cookie-actions .cookie-reject {
  background: transparent;
  color: var(--paper);
  border-color: #6a7584;
}
.cookie-actions .cookie-accept:hover { background: #fff; }
.cookie-actions .cookie-reject:hover { border-color: var(--paper); }

.page-wrap code { font-family: 'IBM Plex Mono', monospace; font-size: 0.88em; background: var(--paper-2); padding: 1px 5px; border: 1px solid var(--line); }

.author-hero {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  margin: 8px 0 32px;
}
.author-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--paper-2);
  flex-shrink: 0;
}
.author-hero h1 { margin: 0 0 10px; }