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

/* ─── TOKENS ───────────────────────────────────────────────── */
:root {
  --bg:       #FAF8F4;
  --surface:  #F0EDE5;
  --border:   #E8E4DB;
  --gold:     #D4A845;
  --gold-t:   #8B7535;
  --heading:  #1A1A1A;
  --body:     #555555;
  --muted:    #999999;

  --font-title: 'Space Grotesk', Inter, sans-serif;
  --font-body:  'Inter', system-ui, sans-serif;
  --font-mono:  'JetBrains Mono', Consolas, monospace;

  --nav-h:  60px;
  --max-w:  960px;
  --gap:    clamp(1.25rem, 4vw, 2.5rem);
}

/* ─── DARK MODE TOKENS ─────────────────────────────────────── */
[data-theme="dark"] {
  --bg:      #111110;
  --surface: #1C1B18;
  --border:  #2C2A26;
  --gold:    #D4A845;
  --gold-t:  #C9A040;
  --heading: #F0EDE5;
  --body:    #9A9590;
  --muted:   #585450;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

/* ─── CONTAINER ────────────────────────────────────────────── */
.container {
  width: min(var(--max-w), 100% - 2 * var(--gap));
  margin-inline: auto;
}

/* ─── NAV ──────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  height: var(--nav-h);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: min(var(--max-w), 100% - 2 * var(--gap));
  margin-inline: auto;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: .6rem;
}

.nav__wordmark {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--gold-t);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: .25rem;
}

.nav__theme {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  display: flex;
  align-items: center;
  padding: .5rem;
  transition: color .2s;
}
.nav__theme:hover { color: var(--heading); }

/* Show moon in light mode, sun in dark mode */
.icon-sun  { display: none; }
.icon-moon { display: block; }
[data-theme="dark"] .icon-sun  { display: block; }
[data-theme="dark"] .icon-moon { display: none; }

.nav__x {
  color: var(--muted);
  display: flex;
  align-items: center;
  padding: .5rem;
  transition: color .2s;
}
.nav__x:hover { color: var(--heading); }

/* ─── HEADER ───────────────────────────────────────────────── */
.header {
  padding-block: clamp(3rem, 7vw, 5.5rem);
  border-bottom: 1px solid var(--border);
}

.header__label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gold-t);
  margin-bottom: 1.25rem;
}

.header__title {
  font-family: var(--font-title);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 600;
  color: var(--heading);
  line-height: 1.1;
  margin-bottom: 1.25rem;
  letter-spacing: -.02em;
}

.header__sub {
  font-size: clamp(.95rem, 2vw, 1.05rem);
  color: var(--muted);
  max-width: 560px;
  line-height: 1.7;
}

/* ─── FILTER ───────────────────────────────────────────────── */
.filter {
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: var(--nav-h);
  background: var(--bg);
  z-index: 90;
}

.filter__tabs {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
}

.filter__tab {
  font-family: var(--font-body);
  font-size: .8rem;
  font-weight: 500;
  color: var(--muted);
  background: none;
  border: 1px solid var(--border);
  padding: .35rem .9rem;
  cursor: pointer;
  transition: color .2s, border-color .2s, background .2s;
  white-space: nowrap;
}

.filter__tab:hover {
  color: var(--heading);
  border-color: var(--gold);
}

.filter__tab.active {
  color: var(--gold-t);
  border-color: var(--gold);
  background: var(--surface);
}

/* ─── ARCHIVE GRID ─────────────────────────────────────────── */
.archive {
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

.archive__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.archive__empty {
  font-size: .95rem;
  color: var(--muted);
  padding-block: 3rem;
  font-family: var(--font-mono);
}

/* ─── ARTICLE CARD ─────────────────────────────────────────── */
.article-card {
  background: var(--bg);
  transition: background .2s;
}

.article-card:hover { background: var(--surface); }

.article-card__link {
  display: block;
  padding: 2rem 1.75rem;
  height: 100%;
}

.article-card__meta {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: 1rem;
}

.zone-tag {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--gold-t);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: .2rem .55rem;
}

.article-card__date {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--muted);
}

.article-card__title {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--heading);
  line-height: 1.3;
  margin-bottom: .75rem;
  letter-spacing: -.01em;
}

.article-card__excerpt {
  font-size: .9rem;
  color: var(--body);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.article-card__read {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--gold-t);
  letter-spacing: .05em;
}

/* ─── ARTICLE CARD HIDDEN ──────────────────────────────────── */
.article-card[hidden] { display: none; }

/* ─── FOOTER ───────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding-block: 1.75rem;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__brand {
  font-family: var(--font-title);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--gold-t);
}

.footer__copy {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--muted);
}

/* ══════════════════════════════════════════════════════════════
   ARTICLE READING VIEW
   ══════════════════════════════════════════════════════════════ */

.article-nav {
  position: sticky;
  top: 0;
  height: var(--nav-h);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.article-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: min(var(--max-w), 100% - 2 * var(--gap));
  margin-inline: auto;
}

.article-nav__back {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: .4rem;
  transition: color .2s;
}
.article-nav__back:hover { color: var(--heading); }

.article-nav__brand {
  font-family: var(--font-title);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--gold-t);
}

/* Article header */
.article-header {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  border-bottom: 1px solid var(--border);
}

.article-header__zone {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gold-t);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.article-header__zone::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 1.5px;
  background: var(--gold);
}

.article-header__title {
  font-family: var(--font-title);
  font-size: clamp(1.75rem, 4.5vw, 2.75rem);
  font-weight: 600;
  color: var(--heading);
  line-height: 1.15;
  margin-bottom: 1.5rem;
  letter-spacing: -.02em;
  max-width: 720px;
}

.article-header__meta {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--muted);
}

/* Article body */
.article-body {
  padding-block: clamp(2.5rem, 5vw, 4rem);
  max-width: 680px;
}

.article-body .lead {
  font-size: 1.1rem;
  color: var(--body);
  line-height: 1.75;
  border-left: 2px solid var(--gold);
  padding-left: 1.25rem;
  margin-bottom: 2.5rem;
}

.article-body p {
  font-size: 1rem;
  color: var(--body);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.article-body h2 {
  font-family: var(--font-title);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--heading);
  margin-block: 2.5rem 1rem;
  letter-spacing: -.01em;
}

.article-body .callout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--gold);
  padding: 1.25rem 1.5rem;
  margin-block: 2rem;
  font-size: .95rem;
  color: var(--body);
  line-height: 1.7;
}

.callout__label {
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gold-t);
  margin-bottom: .6rem;
  display: block;
}

.article-body .pull-quote {
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--heading);
  text-align: center;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding-block: 1.75rem;
  margin-block: 2.5rem;
  line-height: 1.5;
  letter-spacing: -.01em;
}

/* ─── ARTICLE SUBHEAD ──────────────────────────────────────── */
.article-header__sub {
  font-family: var(--font-title);
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--muted);
  line-height: 1.5;
  margin-top: .75rem;
  max-width: 600px;
}

/* ─── TAGS ─────────────────────────────────────────────────── */
.tags {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  margin-block: 2rem;
}

.tag {
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--gold-t);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: .25rem .65rem;
}

/* ─── OPEN QUESTIONS ───────────────────────────────────────── */
.open-questions {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--gold);
  padding: 1.5rem 1.75rem;
  margin-block: 2rem;
}

.oq-title {
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gold-t);
  margin-bottom: 1rem;
  display: block;
}

.open-questions ul {
  list-style: none;
  padding: 0;
}

.open-questions li {
  font-size: .9rem;
  color: var(--body);
  padding: .4rem 0 .4rem 1.25rem;
  position: relative;
  line-height: 1.6;
}

.open-questions li::before {
  content: '?';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-weight: 700;
  font-family: var(--font-title);
}

/* ─── SOURCES ──────────────────────────────────────────────── */
.sources {
  margin-block: 2rem 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.sources-title {
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gold-t);
  margin-bottom: 1.25rem;
  display: block;
}

.source-item {
  margin-bottom: 1rem;
  padding-left: 1rem;
  border-left: 2px solid var(--border);
}

.source-claim {
  font-size: .85rem;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: .2rem;
}

.source-ref {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--muted);
}

.source-ref a {
  color: var(--gold-t);
  text-decoration: none;
}

.source-ref a:hover {
  text-decoration: underline;
}

/* ─── MOBILE ───────────────────────────────────────────────── */
@media (max-width: 560px) {
  .archive__grid {
    grid-template-columns: 1fr;
  }

  .filter__tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 2px;
    gap: .4rem;
  }

  .filter__tabs::-webkit-scrollbar { display: none; }

  .filter__tab {
    font-size: .75rem;
    padding: .3rem .7rem;
    flex-shrink: 0;
  }

  .header__sub { max-width: 100%; }
}