/* ==========================================================================
   Luchian Software Consulting
   Editorial / trade-publication aesthetic
   Type: Fraunces (display, variable opsz+SOFT) · Newsreader (body) · JetBrains Mono (eyebrow)
   ========================================================================== */

:root {
  --font-display: 'Fraunces', 'Hoefler Text', Georgia, serif;
  --font-body: 'Newsreader', 'Iowan Old Style', Georgia, serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --paper: #f1ece1;
  --paper-deep: #e8e1d2;
  --ink: #1a1410;
  --ink-muted: #5e554a;
  --rule: rgba(26, 20, 16, 0.18);
  --rule-strong: rgba(26, 20, 16, 0.85);
  --accent: #7a1f1f;
  --accent-hover: #5a1414;

  --step--1: clamp(0.83rem, 0.81rem + 0.10vw, 0.89rem);
  --step-0:  clamp(1.05rem, 1.00rem + 0.25vw, 1.20rem);
  --step-1:  clamp(1.25rem, 1.16rem + 0.45vw, 1.50rem);
  --step-2:  clamp(1.50rem, 1.34rem + 0.78vw, 1.95rem);
  --step-3:  clamp(1.78rem, 1.51rem + 1.34vw, 2.55rem);
  --step-4:  clamp(2.11rem, 1.66rem + 2.25vw, 3.40rem);
  --step-5:  clamp(2.50rem, 1.74rem + 3.78vw, 4.55rem);
  --step-6:  clamp(2.95rem, 1.69rem + 6.30vw, 6.10rem);

  --space-2xs: 0.5rem;
  --space-xs:  0.75rem;
  --space-s:   1rem;
  --space-m:   1.75rem;
  --space-l:   2.75rem;
  --space-xl:  4.5rem;
  --space-2xl: 7rem;

  --measure: 50rem;
  --rail: 11rem;
  --rail-gap: clamp(1.75rem, 3vw, 3rem);
  --gutter: clamp(1.25rem, 4vw, 3rem);
}

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

html {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  font-optical-sizing: auto;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  font-size: var(--step-0);
  line-height: 1.65;
  font-variation-settings: "opsz" 18;
  /* paper grain */
  background-image:
    radial-gradient(circle at 1px 1px, rgba(26, 20, 16, 0.035) 1px, transparent 0);
  background-size: 4px 4px;
}

::selection { background: var(--accent); color: var(--paper); }

a { color: inherit; text-decoration: none; }

/* ==========================================================================
   Layout shell
   ========================================================================== */

.page {
  max-width: 76rem;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ==========================================================================
   Masthead
   ========================================================================== */

.masthead {
  padding: var(--space-l) 0 var(--space-xl);
  border-bottom: 1px solid var(--rule-strong);
}

.masthead__topbar {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-m);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-muted);
  padding-bottom: var(--space-m);
  border-bottom: 1px solid var(--rule);
  margin-bottom: var(--space-xl);
}

.masthead__nav {
  display: flex;
  gap: clamp(0.75rem, 2vw, 1.75rem);
  flex-wrap: wrap;
}

.masthead__nav a {
  color: var(--ink);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.masthead__nav a[aria-current="page"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.masthead__nav a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.masthead__title {
  font-family: var(--font-display);
  font-size: var(--step-6);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: -0.025em;
  margin: 0;
  font-variation-settings: "opsz" 144, "SOFT" 30, "wght" 420;
  text-wrap: balance;
}

.masthead__subtitle {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: var(--step-2);
  line-height: 1.3;
  color: var(--ink-muted);
  margin: var(--space-s) 0 var(--space-l);
  max-width: 32ch;
  font-variation-settings: "opsz" 72, "SOFT" 60;
  text-wrap: balance;
}

.masthead__meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-m);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-muted);
}

.masthead__meta strong {
  color: var(--ink);
  font-weight: 500;
}

/* ==========================================================================
   Article
   ========================================================================== */

main { padding: var(--space-2xl) 0; }

.article {
  max-width: var(--measure);
  margin: 0;
}

.lede {
  font-family: var(--font-display);
  font-weight: 350;
  font-size: var(--step-3);
  line-height: 1.25;
  letter-spacing: -0.012em;
  margin: 0 0 var(--space-2xl);
  font-variation-settings: "opsz" 96, "SOFT" 40;
  text-wrap: pretty;
}

.lede::first-letter {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 5.2em;
  float: left;
  line-height: 0.82;
  margin: 0.06em 0.08em -0.06em -0.04em;
  color: var(--accent);
  font-variation-settings: "opsz" 144, "SOFT" 50, "wght" 600;
}

/* ==========================================================================
   Sections
   ========================================================================== */

.section + .section { margin-top: var(--space-xl); }

.section-marker {
  display: flex;
  align-items: baseline;
  gap: var(--space-s);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-muted);
  margin-bottom: var(--space-m);
}

.section-marker__num {
  color: var(--accent);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.section-marker::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--rule);
  margin-left: var(--space-2xs);
}

.section h2 {
  font-family: var(--font-display);
  font-size: var(--step-4);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.018em;
  margin: 0 0 var(--space-m);
  font-variation-settings: "opsz" 144, "SOFT" 25, "wght" 440;
  text-wrap: balance;
}

.section p { margin: 0 0 var(--space-s); }

/* ==========================================================================
   Editorial list (numbered, hairline-separated)
   ========================================================================== */

.list {
  list-style: none;
  padding: 0;
  margin: var(--space-m) 0 0;
  border-top: 1px solid var(--rule);
  counter-reset: list-counter;
}

.list > li {
  display: grid;
  grid-template-columns: 2.75rem 1fr;
  gap: var(--space-s);
  align-items: baseline;
  padding: var(--space-m) 0;
  border-bottom: 1px solid var(--rule);
  font-size: var(--step-1);
  line-height: 1.45;
  font-weight: 400;
}

.list > li::before {
  counter-increment: list-counter;
  content: counter(list-counter, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.08em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  padding-top: 0.35em;
}

.list a {
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.list a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ==========================================================================
   Call to action
   ========================================================================== */

.cta {
  margin-top: var(--space-2xl);
  padding-top: var(--space-l);
  border-top: 2px solid var(--rule-strong);
}

.cta p {
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 350;
  font-style: italic;
  line-height: 1.3;
  margin: 0;
  font-variation-settings: "opsz" 96, "SOFT" 60;
  text-wrap: balance;
}

.cta a {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
  font-style: italic;
  white-space: nowrap;
  transition: background 0.18s ease, color 0.18s ease;
}

.cta a:hover {
  background: var(--accent);
  color: var(--paper);
}

/* ==========================================================================
   Detail blocks (used on the audit page for nested topic groups)
   ========================================================================== */

.detail + .detail { margin-top: var(--space-l); }

.detail__heading {
  display: flex;
  align-items: baseline;
  gap: var(--space-s);
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 450;
  line-height: 1.2;
  margin: 0 0 var(--space-s);
  padding-top: var(--space-m);
  border-top: 1px solid var(--rule);
  font-variation-settings: "opsz" 96, "SOFT" 25, "wght" 470;
  text-wrap: balance;
}

.detail__num {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  flex: none;
}

.detail__list {
  list-style: none;
  margin: 0 0 var(--space-s);
  padding: 0;
  color: var(--ink-muted);
}

.detail__list li {
  padding: 0.4em 0 0.4em 1.4rem;
  position: relative;
  line-height: 1.55;
}

.detail__list li::before {
  content: '\2014';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ==========================================================================
   Contact-page email block
   ========================================================================== */

.correspondence {
  margin: var(--space-xl) 0;
  padding: var(--space-l) 0;
  border-top: 1px solid var(--rule-strong);
  border-bottom: 1px solid var(--rule-strong);
}

.correspondence__label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-muted);
  margin-bottom: var(--space-s);
}

.correspondence__email {
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.012em;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 4px;
  font-variation-settings: "opsz" 144, "SOFT" 30;
  word-break: break-word;
  display: inline-block;
  transition: background 0.18s ease, color 0.18s ease;
}

.correspondence__email:hover {
  background: var(--accent);
  color: var(--paper);
}

/* ==========================================================================
   Footer / colophon
   ========================================================================== */

.colophon {
  border-top: 1px solid var(--rule-strong);
  padding: var(--space-l) 0 var(--space-xl);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-m);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-muted);
}

.colophon a {
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.colophon a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ==========================================================================
   Desktop: marginalia grid
   Section markers move to a left rail; body content fills a wide right column.
   The empty desktop space becomes intentional whitespace anchored to the right.
   ========================================================================== */

@media (min-width: 900px) {
  .article {
    display: grid;
    grid-template-columns: var(--rail) minmax(0, var(--measure));
    column-gap: var(--rail-gap);
    row-gap: var(--space-l);
    max-width: calc(var(--rail) + var(--rail-gap) + var(--measure));
    align-items: start;
  }

  .article > .lede,
  .article > .cta {
    grid-column: 2;
  }

  /* Sections become transparent containers so their children participate
     directly in the article's grid (marker → col 1, content → col 2). */
  .section { display: contents; }

  .section + .section { margin-top: 0; }

  .section-marker {
    grid-column: 1;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
    margin: 0;
    padding-top: 0.55rem;
  }

  .section-marker::after { display: none; }

  .section h2,
  .section .list,
  .section > p {
    grid-column: 2;
    margin-top: 0;
  }

  /* Add breathing room between sections without compounding inside one section */
  .section + .section .section-marker { margin-top: var(--space-l); }
  .section + .section h2 { margin-top: var(--space-l); }
}

@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(10px);
    animation: reveal 0.9s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
  }
  .reveal-1 { animation-delay: 0.05s; }
  .reveal-2 { animation-delay: 0.18s; }
  .reveal-3 { animation-delay: 0.30s; }
  .reveal-4 { animation-delay: 0.45s; }
  .reveal-5 { animation-delay: 0.60s; }
}

@keyframes reveal {
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 720px) {
  .masthead { padding-top: var(--space-m); padding-bottom: var(--space-l); }
  .masthead__topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xs);
    margin-bottom: var(--space-l);
  }
  .masthead__meta { flex-direction: column; align-items: flex-start; gap: 0.35rem; }
  .lede::first-letter { font-size: 4.2em; }
  main { padding: var(--space-xl) 0; }
  .list > li { grid-template-columns: 2.25rem 1fr; }
}

@media (max-width: 420px) {
  .masthead__title { line-height: 0.95; }
  .lede { font-size: var(--step-2); }
  .section h2 { font-size: var(--step-3); }
  .cta p { font-size: var(--step-2); }
  .correspondence__email { font-size: var(--step-2); }
}