/* =========================================================================
   Winfield Chronicles — an Odisena imprint
   Art direction: literary archival futurism.
   Warm paper/ink neutrals · deep midnight/navy · one burnished-gold accent.
   Typography: native OS font stacks only — no runtime web-font requests.
   Editorial serif (system serif: New York / Iowan / Palatino / Georgia),
   precise sans (system-ui: San Francisco / Segoe UI), mono (SF Mono / Menlo).
   No fonts.googleapis.com / fonts.gstatic.com dependency.
   ========================================================================= */

/* ------------------------------ Tokens ---------------------------------- */
:root {
  /* Type scale (fluid) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8125rem);
  --text-sm: clamp(0.8125rem, 0.78rem + 0.25vw, 0.9375rem);
  --text-base: clamp(1rem, 0.96rem + 0.28vw, 1.125rem);
  --text-lg: clamp(1.15rem, 1rem + 0.6vw, 1.4rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.4vw, 2.25rem);
  --text-2xl: clamp(2.1rem, 1.4rem + 3vw, 3.6rem);
  --text-3xl: clamp(2.6rem, 1.2rem + 5.2vw, 5.25rem);

  /* Spacing (4px base) */
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem;
  --space-32: 8rem;

  /* Fonts — native OS stacks only (no external web fonts).
     Serif favors Apple's New York and high-quality book serifs; graceful
     Georgia/Times fallback everywhere else. Sans uses the OS UI face.
     Mono uses the OS code face. */
  --font-serif: ui-serif, 'New York', 'Iowan Old Style', 'Palatino Linotype',
                Palatino, 'Book Antiqua', Georgia, 'Times New Roman', serif;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI',
               Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, 'SF Mono', SFMono-Regular, Menlo, Consolas,
               'Liberation Mono', 'Courier New', monospace;

  /* Measure */
  --measure: 68ch;
  --maxw: 1200px;

  --radius: 3px;
  --border: 1px solid var(--rule);

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* Light — warm archival paper */
:root, [data-theme="light"] {
  --paper:      #f4efe6;   /* warm paper */
  --paper-2:    #ece5d7;   /* deeper paper panel */
  --card:       #faf6ee;
  --ink:        #1c2230;   /* near-navy ink */
  --ink-soft:   #40464f;
  --ink-mute:   #6d6a61;   /* warm grey */
  --rule:       #d8cfbd;   /* hairline on paper */
  --rule-strong:#c3b79c;
  --navy:       #10192e;   /* deep midnight */
  --navy-ink:   #e9e2d2;   /* text on navy */
  --gold:       #8a6820;   /* burnished gold — darkened to clear WCAG AA for eyebrow/label text on paper */
  --gold-soft:  #b8924a;
  --gold-tint:  rgba(169,130,47,0.10);
  --shadow:     0 1px 2px rgba(28,34,48,0.05), 0 12px 34px -18px rgba(28,34,48,0.22);
}

/* Dark — deep midnight archive */
[data-theme="dark"] {
  --paper:      #10141f;
  --paper-2:    #141a28;
  --card:       #161d2c;
  --ink:        #ece5d5;
  --ink-soft:   #c3bdae;
  --ink-mute:   #8b8577;
  --rule:       #29303f;
  --rule-strong:#3a4353;
  --navy:       #0b101c;
  --navy-ink:   #e9e2d2;
  --gold:       #cfa24c;
  --gold-soft:  #ddb469;
  --gold-tint:  rgba(207,162,76,0.12);
  --shadow:     0 1px 2px rgba(0,0,0,0.4), 0 18px 44px -22px rgba(0,0,0,0.7);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:#10141f; --paper-2:#141a28; --card:#161d2c;
    --ink:#ece5d5; --ink-soft:#c3bdae; --ink-mute:#8b8577;
    --rule:#29303f; --rule-strong:#3a4353;
    --navy:#0b101c; --navy-ink:#e9e2d2;
    --gold:#cfa24c; --gold-soft:#ddb469; --gold-tint:rgba(207,162,76,0.12);
    --shadow:0 1px 2px rgba(0,0,0,0.4), 0 18px 44px -22px rgba(0,0,0,0.7);
  }
}

/* ------------------------------ Reset ----------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .4s var(--ease), color .4s var(--ease);
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--gold-tint); color: var(--ink); }

/* Subtle paper grain */
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  opacity: .5; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
}
[data-theme="dark"] body::before { mix-blend-mode: screen; opacity: .4; }

/* --------------------------- Typography --------------------------------- */
h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 500; line-height: 1.08;
  letter-spacing: -0.015em; color: var(--ink); }
h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }
p { max-width: var(--measure); }

.serif { font-family: var(--font-serif); }
.mono  { font-family: var(--font-mono); }
.italic { font-style: italic; }

.eyebrow {
  font-family: var(--font-mono); font-size: var(--text-xs);
  text-transform: uppercase; letter-spacing: 0.28em; color: var(--gold);
  font-weight: 500;
}
.lede { font-size: var(--text-lg); color: var(--ink-soft); line-height: 1.55; max-width: 56ch; }
.muted { color: var(--ink-mute); }
.small { font-size: var(--text-sm); }

/* --------------------------- Layout ------------------------------------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-16)); position: relative; z-index: 1; }
.section { padding-block: clamp(var(--space-16), 9vw, var(--space-32)); }
.section--tight { padding-block: clamp(var(--space-12), 6vw, var(--space-20)); }
.rule-top { border-top: var(--border); }
.grid { display: grid; gap: var(--space-8); }
.stack > * + * { margin-top: var(--space-4); }
.flow > * + * { margin-top: var(--space-6); }
.center { text-align: center; }
.hairline { height: 1px; background: var(--rule); border: 0; }

/* ---------------------------- Header ------------------------------------ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-6); padding-block: var(--space-4); }
.brand { display: flex; align-items: center; gap: var(--space-3); }
.brand svg { width: 30px; height: 30px; color: var(--gold); flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-name { display: block; font-family: var(--font-serif); font-size: 1.02rem; font-weight: 600;
  letter-spacing: -0.01em; white-space: nowrap; }
.brand-sub { display: block; font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--ink-mute); margin-top: 3px; white-space: nowrap; }
.nav-links { display: flex; align-items: center; gap: var(--space-6); }
.nav-links a { font-size: var(--text-sm); color: var(--ink-soft); position: relative;
  padding-block: 2px; transition: color .2s var(--ease); }
.nav-links a::after { content: ""; position: absolute; left: 0; bottom: -2px; width: 0; height: 1px;
  background: var(--gold); transition: width .25s var(--ease); }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); }
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after { width: 100%; }
.nav-tools { display: flex; align-items: center; gap: var(--space-3); }
.icon-btn { background: transparent; border: var(--border); border-radius: var(--radius);
  color: var(--ink-soft); width: 38px; height: 38px; display: grid; place-items: center;
  cursor: pointer; transition: all .2s var(--ease); }
.icon-btn:hover { color: var(--ink); border-color: var(--rule-strong); }
.icon-btn svg { width: 17px; height: 17px; }
.nav-toggle { display: none; }

@media (max-width: 820px) {
  .nav { gap: 0; }
  .nav-tools { gap: 7px; }
  .nav-links { position: fixed; top: 0; right: 0; bottom: 0; height: 100vh; height: 100dvh;
    width: min(80vw, 320px); z-index: 60;
    flex-direction: column; align-items: flex-start; justify-content: center;
    gap: var(--space-6); background: var(--paper-2); border-left: var(--border);
    padding: var(--space-16) var(--space-8); transform: translateX(0);
    opacity: 0; visibility: hidden; pointer-events: none;
    transition: opacity .25s var(--ease), visibility .25s var(--ease);
    box-shadow: var(--shadow); overflow-y: auto; }
  .nav-links.open { opacity: 1; visibility: visible; pointer-events: auto; }
  .nav-links a { font-size: var(--text-lg); font-family: var(--font-serif); }
  .nav-toggle { display: grid; position: relative; z-index: 70; }
}

@media (max-width: 420px) {
  .site-header .wrap { padding-inline: 12px; }
  .brand { gap: 8px; }
  .brand svg { width: 28px; height: 28px; }
  .brand-name { font-size: .94rem; }
  .brand-sub { font-size: .52rem; letter-spacing: .14em; }
  .icon-btn { width: 36px; height: 36px; }
}

@media (max-width: 340px) {
  .site-header .wrap { padding-inline: 8px; }
  .nav-tools { gap: 4px; }
  .icon-btn { width: 34px; height: 34px; }
  .brand-name { font-size: .89rem; }
  .brand-sub { display: none; }
}

/* ----------------------------- Buttons ---------------------------------- */
.btn { display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-sans); font-size: var(--text-sm); font-weight: 500;
  padding: var(--space-3) var(--space-5); border-radius: var(--radius);
  border: 1px solid var(--ink); background: var(--ink); color: var(--paper);
  cursor: pointer; transition: all .22s var(--ease); }
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--rule-strong); }
.btn--ghost:hover { border-color: var(--ink); }
.btn--gold { background: var(--gold); border-color: var(--gold); color: #17130a; }
.btn svg { width: 15px; height: 15px; }

/* ------------------------------ Badges ---------------------------------- */
.badge { display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 500;
  letter-spacing: 0.06em; padding: 3px 9px; border-radius: 100px;
  border: 1px solid var(--rule-strong); color: var(--ink-soft); white-space: nowrap; }
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge--published { color: #2f6b4f; border-color: color-mix(in srgb,#2f6b4f 45%,transparent); }
[data-theme="dark"] .badge--published { color: #6cc79a; }
.badge--dev { color: var(--gold); border-color: color-mix(in srgb,var(--gold) 50%,transparent); }
.badge--pending { color: var(--ink-mute); border-style: dashed; }
.badge--excluded { color: #9a5a3c; border-color: color-mix(in srgb,#9a5a3c 45%,transparent); }
[data-theme="dark"] .badge--excluded { color: #d08a63; }

/* Confidence dots (from source vocabulary) */
.conf { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: .05em;
  display: inline-flex; align-items: center; gap: 6px; color: var(--ink-mute); }
.conf::before { content:""; width:7px; height:7px; border-radius:2px; background: var(--ink-mute); }
.conf--confirmed::before { background:#2f6b4f; } .conf--confirmed { color:#2f6b4f; }
[data-theme="dark"] .conf--confirmed { color:#6cc79a; } [data-theme="dark"] .conf--confirmed::before { background:#6cc79a; }
.conf--recorded::before  { background: var(--ink-soft); } .conf--recorded { color: var(--ink-soft); }
.conf--proposed::before  { background: var(--gold); } .conf--proposed { color: var(--gold); }
.conf--speculative::before { background: transparent; border:1px solid var(--gold); } .conf--speculative { color: var(--gold); }

/* ------------------------------ Cards ----------------------------------- */
.card { background: var(--card); border: var(--border); border-radius: var(--radius);
  padding: var(--space-8); transition: border-color .25s var(--ease), transform .25s var(--ease); }
.card:hover { border-color: var(--rule-strong); }
.card--link:hover { transform: translateY(-3px); box-shadow: var(--shadow); }

/* ------------------------------ Panels ---------------------------------- */
.panel-navy { background: var(--navy); color: var(--navy-ink); border-radius: var(--radius); }
.panel-navy h1,.panel-navy h2,.panel-navy h3 { color: var(--navy-ink); }
.panel-navy .muted { color: color-mix(in srgb, var(--navy-ink) 62%, transparent); }

.note {
  border-left: 2px solid var(--gold); background: var(--gold-tint);
  padding: var(--space-5) var(--space-6); border-radius: 0 var(--radius) var(--radius) 0;
}
.note .eyebrow { margin-bottom: var(--space-2); }

/* ------------------------------ Footer ---------------------------------- */
.site-footer { background: var(--navy); color: var(--navy-ink); margin-top: var(--space-24); }
.site-footer a { color: color-mix(in srgb,var(--navy-ink) 78%, transparent); transition: color .2s; }
.site-footer a:hover { color: var(--gold-soft); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: var(--space-10);
  padding-block: var(--space-20) var(--space-12); }
.footer-col h5 { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase;
  letter-spacing: .2em; color: var(--gold-soft); margin-bottom: var(--space-4); }
.footer-col ul { list-style: none; padding: 0; display: flex; flex-direction: column; gap: var(--space-2); }
.footer-col li { font-size: var(--text-sm); }
.footer-bottom { border-top: 1px solid color-mix(in srgb,var(--navy-ink) 18%, transparent);
  padding-block: var(--space-6) var(--space-8); display: flex; justify-content: space-between;
  flex-wrap: wrap; gap: var(--space-4); font-size: var(--text-xs); font-family: var(--font-mono);
  color: color-mix(in srgb,var(--navy-ink) 58%, transparent); }
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; gap: var(--space-8); } }

/* --------------------------- Reveal anim -------------------------------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ------------------------ Utility grids --------------------------------- */
.cols-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: var(--space-8); }
.cols-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--space-6); }
@media (max-width: 860px) { .cols-2, .cols-3 { grid-template-columns: 1fr; } }

.stat { display: flex; flex-direction: column; gap: var(--space-1); }
.stat b { font-family: var(--font-serif); font-size: var(--text-2xl); font-weight: 500; line-height: 1; }
.stat span { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase;
  letter-spacing: .16em; color: var(--ink-mute); }

/* Definition rows */
.deflist { display: grid; grid-template-columns: max-content 1fr; gap: var(--space-3) var(--space-8); }
.deflist dt { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase;
  letter-spacing: .12em; color: var(--ink-mute); padding-top: 3px; }
.deflist dd { font-size: var(--text-sm); }
@media (max-width: 620px){ .deflist { grid-template-columns: 1fr; gap: var(--space-1) 0; }
  .deflist dd { margin-bottom: var(--space-3); } }

.skip-link { position: absolute; left: -999px; top: 0; background: var(--ink); color: var(--paper);
  padding: var(--space-2) var(--space-4); z-index: 100; border-radius: var(--radius); }
.skip-link:focus { left: var(--space-4); top: var(--space-4); }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 2px; }
/* Programmatic focus target for the skip link should not paint a visible ring. */
#main:focus { outline: none; }
#main:focus:not(:focus-visible) { outline: none; }