/* ————————————————————————————————————————————————————————————
   Alan De Vaney — the audit ledger
   Paper, ink, one verification green. Serif voice, mono evidence.
   ———————————————————————————————————————————————————————————— */

:root {
  --paper: #faf7f0;
  --paper-deep: #f2ede2;
  --ink: #1c1a16;
  --ink-soft: #5c574c;
  --ink-faint: #8a8375;
  --rule: #d9d2c2;
  --verify: #1d6f4c;
  --verify-soft: #e3efe7;
  --refuse: #9a3b2e;
  --refuse-soft: #f4e6e2;
  --serif: 'Fraunces', Georgia, 'Times New Roman', serif;
  --sans: 'IBM Plex Sans', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'Cascadia Mono', monospace;
  --measure: 66ch;
}

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

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

body {
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  /* paper grain */
  background-image:
    radial-gradient(rgba(28, 26, 22, 0.028) 1px, transparent 1px);
  background-size: 3px 3px;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration-color: var(--verify); text-underline-offset: 3px; }
a:hover { color: var(--verify); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--verify);
  outline-offset: 3px;
  border-radius: 1px;
}

.wrap { max-width: 76rem; margin: 0 auto; padding: 0 clamp(1.25rem, 4vw, 3rem); }

/* ——— top rail ——— */
header.site {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 1.5rem 0 1.25rem;
  border-bottom: 1px solid var(--rule);
}
.brand { font-family: var(--serif); font-weight: 700; font-size: 1.15rem; letter-spacing: 0.01em; text-decoration: none; }
nav.site a {
  font-family: var(--mono); font-size: 0.8rem; text-decoration: none;
  color: var(--ink-soft); margin-left: 1.75rem; letter-spacing: 0.04em;
}
nav.site a:hover { color: var(--verify); }

/* ——— ledger folio numbers ——— */
.folio {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.14em;
  color: var(--ink-faint); text-transform: uppercase;
  display: flex; align-items: center; gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.folio::after { content: ''; flex: 1; border-top: 1px solid var(--rule); }

/* ——— hero ——— */
.hero { padding: clamp(3.5rem, 9vh, 7rem) 0 clamp(2.5rem, 6vh, 4.5rem); }
.hero h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(2.1rem, 5.4vw, 4.2rem);
  line-height: 1.12;
  letter-spacing: -0.015em;
  max-width: 21ch;
  text-wrap: balance;
}
.hero h1 em {
  font-style: italic;
  padding-right: 0.08em;
  font-weight: 700;
  color: var(--verify);
}
.hero .sub {
  margin-top: 1.75rem;
  max-width: 52ch;
  font-size: 1.1rem;
  color: var(--ink-soft);
  text-wrap: pretty;
}
.hero .cred {
  margin-top: 2.25rem;
  font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.05em;
  color: var(--ink-soft);
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.6rem;
}
.hero .cred span::before { content: '· '; color: var(--verify); font-weight: 700; }

/* staggered reveal */
.reveal { opacity: 0; transform: translateY(14px); animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) forwards; }
.reveal:nth-child(2) { animation-delay: 0.08s; }
.reveal:nth-child(3) { animation-delay: 0.16s; }
.reveal:nth-child(4) { animation-delay: 0.24s; }
@keyframes rise { to { opacity: 1; transform: none; } }

/* ——— the specimen: two claims, one verified, one refused ——— */
.specimen {
  margin: clamp(2rem, 5vh, 3.5rem) 0 0;
  border: 1px solid var(--rule);
  background: #fffdf8;
  box-shadow: 0 1px 0 var(--rule), 0 14px 40px -28px rgba(28, 26, 22, 0.35);
}
.specimen-head {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-faint);
  padding: 0.7rem 1.25rem; border-bottom: 1px solid var(--rule);
  display: flex; justify-content: space-between;
}
.claim {
  display: grid; grid-template-columns: 1fr auto; gap: 1.25rem; align-items: start;
  padding: 1.2rem 1.25rem;
}
.claim + .claim { border-top: 1px dashed var(--rule); }
.claim p { font-family: var(--serif); font-size: 1.05rem; max-width: 48ch; }
.claim .why {
  font-family: var(--mono); font-size: 0.76rem; color: var(--ink-faint);
  margin-top: 0.45rem; max-width: 52ch;
}
.claim .why a { color: var(--ink-soft); }

.stamp {
  font-family: var(--mono); font-size: 0.74rem; font-weight: 500;
  letter-spacing: 0.16em; text-transform: uppercase;
  padding: 0.32rem 0.7rem;
  border: 1.5px solid currentColor; border-radius: 2px;
  transform: rotate(-4deg);
  white-space: nowrap;
  align-self: center;
}
.stamp.ok { color: var(--verify); background: var(--verify-soft); }
.stamp.no { color: var(--refuse); background: var(--refuse-soft); }

/* ——— section scaffolding ——— */
section { padding: clamp(3rem, 8vh, 5.5rem) 0 0; }
section:last-of-type { padding-bottom: clamp(3rem, 8vh, 5rem); }
h2 {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
  text-wrap: balance;
}
.lede { color: var(--ink-soft); max-width: var(--measure); margin-bottom: 2.25rem; text-wrap: pretty; }

/* ——— case study entries: ledger rows ——— */
.entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  gap: clamp(1.25rem, 4vw, 3.5rem);
  padding: 2.25rem 0;
  border-top: 1px solid var(--rule);
  text-decoration: none; color: inherit;
}
a.entry:hover h3 { color: var(--verify); }
a.entry:hover .go { transform: translateX(6px); }
.entry:last-of-type { border-bottom: 1px solid var(--rule); }
.entry .no {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.14em;
  color: var(--ink-faint); text-transform: uppercase; margin-bottom: 0.6rem;
}
.entry h3 {
  font-family: var(--serif); font-weight: 600; font-size: 1.45rem;
  line-height: 1.25; max-width: 18ch; text-wrap: balance;
  transition: color 0.18s ease;
}
.entry .role { margin-top: 0.6rem; font-size: 0.92rem; color: var(--ink-soft); max-width: 30ch; }
.entry .body p { max-width: 58ch; color: var(--ink-soft); text-wrap: pretty; }
.entry .figures {
  margin-top: 1.1rem;
  display: flex; flex-wrap: wrap; gap: 0.45rem 1.5rem;
  font-family: var(--mono); font-size: 0.78rem; color: var(--ink);
}
.entry .figures b { color: var(--verify); font-weight: 500; }
.entry .go {
  display: inline-block; margin-top: 1.1rem;
  font-family: var(--mono); font-size: 0.8rem; color: var(--verify);
  transition: transform 0.18s ease;
}

/* ——— principles: the method ——— */
.method { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.method article { background: var(--paper); padding: 1.5rem 1.4rem 1.7rem; }
.method h3 { font-family: var(--serif); font-size: 1.08rem; font-weight: 600; margin-bottom: 0.5rem; }
.method h3::before {
  content: attr(data-n);
  display: block;
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.14em;
  color: var(--verify); margin-bottom: 0.8rem;
}
.method p { font-size: 0.92rem; color: var(--ink-soft); text-wrap: pretty; }

/* ——— writing list ——— */
.writing a {
  display: flex; justify-content: space-between; gap: 2rem; align-items: baseline;
  padding: 1.1rem 0; border-top: 1px solid var(--rule);
  text-decoration: none;
}
.writing a:last-of-type { border-bottom: 1px solid var(--rule); }
.writing .t { font-family: var(--serif); font-size: 1.12rem; font-weight: 600; }
.writing .d { font-family: var(--mono); font-size: 0.75rem; color: var(--ink-faint); white-space: nowrap; }
.writing a:hover .t { color: var(--verify); }
.writing .soon { font-family: var(--mono); font-size: 0.72rem; color: var(--ink-faint); letter-spacing: 0.1em; text-transform: uppercase; }

/* ——— about / colophon ——— */
.about { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: clamp(1.5rem, 5vw, 4rem); }
.about .prose p { max-width: var(--measure); margin-bottom: 1rem; text-wrap: pretty; }
.aside-card {
  border: 1px solid var(--rule); background: #fffdf8; padding: 1.4rem;
  font-size: 0.92rem; color: var(--ink-soft); align-self: start;
}
.aside-card h3 { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 0.7rem; }
.aside-card p { text-wrap: pretty; }

footer.site {
  margin-top: clamp(3rem, 8vh, 5rem);
  border-top: 1px solid var(--rule);
  padding: 1.5rem 0 2.5rem;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
  font-family: var(--mono); font-size: 0.78rem; color: var(--ink-faint);
}
footer.site a { color: var(--ink-soft); text-decoration: none; margin-right: 1.5rem; }
footer.site a:hover { color: var(--verify); }

/* ——— case study article pages ——— */
article.case { padding: clamp(2.5rem, 7vh, 4.5rem) 0; }
article.case > * { max-width: var(--measure); }
article.case h1 {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(1.9rem, 4.2vw, 3rem); line-height: 1.15;
  letter-spacing: -0.01em; margin-bottom: 1rem; text-wrap: balance;
}
article.case .standfirst { font-size: 1.15rem; color: var(--ink-soft); margin-bottom: 2.5rem; text-wrap: pretty; }
article.case h2 { font-size: 1.5rem; margin: 2.75rem 0 0.75rem; }
article.case p { margin-bottom: 1rem; text-wrap: pretty; }
article.case ul { margin: 0 0 1rem 1.2rem; }
article.case li { margin-bottom: 0.4rem; text-wrap: pretty; }
article.case .figures-band {
  max-width: none;
  display: flex; flex-wrap: wrap; gap: 1px; background: var(--rule);
  border: 1px solid var(--rule); margin: 2rem 0;
}
.fig { background: #fffdf8; padding: 1.1rem 1.4rem; flex: 1 1 10rem; }
.fig b { display: block; font-family: var(--mono); font-size: 1.35rem; font-weight: 500; color: var(--verify); }
.fig span { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); }
blockquote.pull {
  border-left: 3px solid var(--verify);
  padding: 0.4rem 0 0.4rem 1.25rem;
  font-family: var(--serif); font-style: italic; font-size: 1.2rem;
  color: var(--ink); margin: 2rem 0;
  text-wrap: pretty;
}
.note {
  font-family: var(--mono); font-size: 0.8rem; color: var(--ink-soft);
  border: 1px dashed var(--rule); background: #fffdf8;
  padding: 0.9rem 1.1rem; margin: 1.5rem 0;
}

/* ——— responsive ——— */
@media (max-width: 46rem) {
  .entry, .about { grid-template-columns: 1fr; }
  .claim { grid-template-columns: 1fr; }
  .stamp { justify-self: start; }
}


/* ————— dark theme: the ledger at night ————— */
:root[data-theme="dark"] {
  --paper: #16140f;
  --paper-deep: #1d1a14;
  --ink: #ece7da;
  --ink-soft: #b3ab99;
  --ink-faint: #7d7666;
  --rule: #353025;
  --verify: #4cc38a;
  --verify-soft: #12291d;
  --refuse: #e07a5f;
  --refuse-soft: #2e1b16;
}
:root[data-theme="dark"] body { background-image: radial-gradient(rgba(236,231,218,0.03) 1px, transparent 1px); }
:root[data-theme="dark"] .specimen,
:root[data-theme="dark"] .aside-card,
:root[data-theme="dark"] .fig,
:root[data-theme="dark"] .note { background: #1d1a14; }
:root[data-theme="dark"] .specimen { box-shadow: 0 1px 0 var(--rule), 0 14px 40px -28px rgba(0,0,0,0.8); }
:root[data-theme="dark"] .method article { background: var(--paper); }
:root[data-theme="dark"] ::selection { background: var(--verify); color: #16140f; }

.theme-toggle {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-soft);
  background: none; border: 1px solid var(--rule); border-radius: 2px;
  padding: 0.3rem 0.65rem; cursor: pointer; margin-left: 1.75rem;
}
.theme-toggle:hover { color: var(--verify); border-color: var(--verify); }

/* ————— project cards grid ————— */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr)); gap: 1.25rem; }
.card {
  border: 1px solid var(--rule); background: var(--paper-deep);
  padding: 1.4rem 1.4rem 1.5rem; text-decoration: none; color: inherit;
  display: flex; flex-direction: column; gap: 0.7rem;
  transition: border-color 0.18s ease, transform 0.18s ease;
}
.card:hover { border-color: var(--verify); transform: translateY(-2px); }
.card .no { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-faint); }
.card h3 { font-family: var(--serif); font-size: 1.25rem; font-weight: 600; line-height: 1.25; text-wrap: balance; }
.card p { font-size: 0.92rem; color: var(--ink-soft); flex: 1; text-wrap: pretty; }
.card .figures { display: flex; flex-wrap: wrap; gap: 0.35rem 1.1rem; font-family: var(--mono); font-size: 0.74rem; }
.card .figures b { color: var(--verify); font-weight: 500; }

/* ————— timeline ————— */
.timeline { border-left: 2px solid var(--rule); margin-left: 0.4rem; padding-left: 1.75rem; }
.tl {
  position: relative; padding: 0 0 1.9rem;
}
.tl::before {
  content: ''; position: absolute; left: calc(-1.75rem - 6px); top: 0.5rem;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--verify); border: 2px solid var(--paper);
}
.tl.faint::before { background: var(--rule); }
.tl .when { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faint); }
.tl h3 { font-family: var(--serif); font-size: 1.15rem; font-weight: 600; margin: 0.25rem 0 0.3rem; }
.tl p { font-size: 0.94rem; color: var(--ink-soft); max-width: 58ch; text-wrap: pretty; }

/* ————— the interrogation (chatbot) ————— */
.interrogate {
  border: 1px solid var(--rule); background: var(--paper-deep);
  box-shadow: 0 1px 0 var(--rule), 0 14px 40px -28px rgba(28,26,22,0.35);
}
.interrogate-head {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-faint);
  padding: 0.7rem 1.25rem; border-bottom: 1px solid var(--rule);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem;
}
.chat-log { max-height: 26rem; overflow-y: auto; padding: 1.1rem 1.25rem; display: flex; flex-direction: column; gap: 1rem; }
.msg { max-width: 56ch; }
.msg.q { align-self: flex-end; text-align: right; }
.msg.q p { display: inline-block; text-align: left; font-size: 0.95rem; background: var(--paper); border: 1px solid var(--rule); padding: 0.55rem 0.85rem; }
.msg.a { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 1rem; align-items: start; }
.msg.a .stamp { transform: rotate(3deg); font-size: 0.66rem; }
.msg.a p { font-family: var(--serif); font-size: 1rem; }
.msg.a .cite { font-family: var(--mono); font-size: 0.72rem; color: var(--ink-faint); margin-top: 0.4rem; }
.msg.a.refused p { color: var(--ink-soft); }
.chat-form { display: flex; gap: 0; border-top: 1px solid var(--rule); }
.chat-form input {
  flex: 1; font-family: var(--sans); font-size: 0.95rem; color: var(--ink);
  background: none; border: none; padding: 0.9rem 1.25rem; outline: none;
}
.chat-form input::placeholder { color: var(--ink-faint); }
.chat-form button {
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--verify); background: none; border: none; border-left: 1px solid var(--rule);
  padding: 0 1.4rem; cursor: pointer;
}
.chat-form button:hover { background: var(--verify-soft); }
.chat-form button:disabled { color: var(--ink-faint); cursor: wait; }
.chat-hints { padding: 0.6rem 1.25rem 0.9rem; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chat-hints button {
  font-family: var(--mono); font-size: 0.72rem; color: var(--ink-soft);
  background: none; border: 1px solid var(--rule); border-radius: 999px;
  padding: 0.25rem 0.7rem; cursor: pointer;
}
.chat-hints button:hover { color: var(--verify); border-color: var(--verify); }