/*
  main.css — compossible.asym-intel.info
  Fonts: Boska (Fontshare) + Source Serif 4 (Google Fonts)
  Max width: 1400px throughout — consistent centred layout
*/

/* ── Tokens ─────────────────────────────────────────────────────────────── */
:root {
  --nb-bg: #1a1918; --nb-border: #2d2c2a; --nb-text: #a8a7a4;
  --nb-hover: #e0dfdc; --nb-teal: #4f98a3; --nb-height: 40px;
  --nb-font: 'Satoshi','Inter',sans-serif;

  --color-bg:           #faf9f6;
  --color-surface:      #f4f2ee;
  --color-text:         #1e1c18;
  --color-text-muted:   #7a7874;
  --color-text-faint:   #b8b6b1;
  --color-title:         #1a6b7a;  /* vibrant teal for feed card titles */
  --color-date:          #4a6580;  /* slate blue for dates */
  --color-primary:      #6b4c2a;
  --color-primary-hover:#4e3319;
  --color-border:       rgba(30,28,24,0.10);
  --color-border-strong:rgba(30,28,24,0.20);

  --font-display: 'Boska','Georgia',serif;
  --font-body:    'Source Serif 4','Georgia',serif;

  --space-2:  0.5rem; --space-3:  0.75rem; --space-4:  1rem;
  --space-6:  1.5rem; --space-8:  2rem;    --space-10: 2.5rem;
  --space-12: 3rem;   --space-16: 4rem;

  --radius-sm: 0.25rem; --radius-md: 0.5rem; --radius-lg: 0.75rem;
  --t-fast: 150ms; --ease: cubic-bezier(0.16,1,0.3,1);

  /* Single layout width used everywhere */
  --site-width: 1400px;
  --inner-width: 1200px;  /* for reading content (posts, categories) */
}

/* ── Reset ───────────────────────────────────────────────────────────────── */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
  scroll-padding-top: 56px;
}
body {
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
main { flex: 1; }
img, svg { display: block; max-width: 100%; }
a { color: var(--color-primary); text-underline-offset: 3px; transition: color var(--t-fast); }
a:hover { color: var(--color-primary-hover); }
p { max-width: none; text-wrap: pretty; }
p + p { margin-top: var(--space-4); }
h1, h2, h3, h4 { line-height: 1.2; text-wrap: balance; text-transform: none; }

/* ── Layout — one container to rule them all ─────────────────────────────── */
.container {
  max-width: var(--site-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}
.container--narrow {
  max-width: var(--inner-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

/* ── Network bar ─────────────────────────────────────────────────────────── */
.network-bar {
  position: sticky; top: 0; z-index: 1000;
  height: var(--nb-height);
  background: var(--nb-bg);
  border-bottom: 1px solid var(--nb-border);
  font-family: var(--nb-font);
  font-size: 13px; letter-spacing: 0.02em;
}
.network-bar__inner {
  display: flex; align-items: center; gap: 1.5rem;
  max-width: 1200px; margin: 0 auto; padding: 0 24px; height: 100%;
}
.network-bar__brand {
  display: flex; align-items: center; gap: 0.5rem;
  text-decoration: none; color: var(--nb-hover); font-weight: 500; flex-shrink: 0;
}
.network-bar__svg { color: var(--nb-teal); flex-shrink: 0; }
.network-bar__sep { color: #3d3c3a; }
.network-bar__section { color: #6b6a67; font-size: 0.7rem; }
.network-bar__spacer { flex: 1; }
.network-bar__nav { display: flex; align-items: center; gap: 1.25rem; }
.network-bar__link { color: var(--nb-text); text-decoration: none; transition: color var(--t-fast); }
.network-bar__link:hover, .network-bar__link--active { color: var(--nb-hover); }
@media (max-width: 640px) { .network-bar__nav, .network-bar__name { display: none; } }

/* ── Site header ─────────────────────────────────────────────────────────── */
.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--space-6);
}
.site-header__inner {
  max-width: var(--site-width);
  margin: 0 auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  display: flex; align-items: center; justify-content: space-between;
}
.site-header__wordmark {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 1.1rem + 0.5vw, 1.6rem);
  font-weight: 700; color: var(--color-text); text-decoration: none;
}
.site-header__strapline {
  font-size: 0.7rem; color: var(--color-text-muted);
  letter-spacing: 0.04em; text-transform: uppercase;
  display: block; margin-top: 2px;
}
.site-header__nav { display: flex; gap: var(--space-6); }
.site-header__nav-link {
  font-size: 0.875rem; font-weight: 500;
  color: var(--color-text-muted); text-decoration: none;
  transition: color var(--t-fast);
}
.site-header__nav-link:hover { color: var(--color-text); }

/* ── Typography ──────────────────────────────────────────────────────────── */
h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 1.2rem + 2.5vw, 3.25rem);
  font-weight: 400;
}
h2 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 1.1rem + 1vw, 2rem);
  font-weight: 400;
}
h3 {
  font-family: var(--font-body);
  font-size: clamp(1.1rem, 1rem + 0.4vw, 1.3rem);
  font-weight: 600;
}

/* ── Homepage ────────────────────────────────────────────────────────────── */
.home__hero {
  padding-block: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}
.home__subtitle {
  font-size: clamp(1rem, 0.9rem + 0.4vw, 1.15rem);
  color: var(--color-text-muted);
  max-width: 60ch;
}
.home__feed { padding-block: var(--space-10); }
.home__feed-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: var(--space-8);
}

/* ── View toggle ─────────────────────────────────────────────────────────── */
.view-toggle { display: flex; gap: 0.25rem; }
.view-toggle__btn {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.04em;
  padding: 0.35rem 0.7rem; border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: transparent; color: var(--color-text-faint);
  cursor: pointer; transition: all var(--t-fast);
}
.view-toggle__btn:hover { color: var(--color-text-muted); border-color: var(--color-border-strong); }
.view-toggle__btn[aria-pressed="true"] {
  background: var(--color-surface); color: var(--color-text);
  border-color: var(--color-border-strong);
}

/* ── Tile view ───────────────────────────────────────────────────────────── */
.feed-tiles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}
.tile-card {
  display: flex; flex-direction: column;
  text-decoration: none; color: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--t-fast), border-color var(--t-fast);
}
.tile-card:hover { border-color: var(--color-border-strong); box-shadow: 0 4px 16px rgba(30,28,24,0.08); }
.tile-card__image-wrap { aspect-ratio: 16/9; overflow: hidden; background: var(--color-surface); }
.tile-card__image-wrap--placeholder { aspect-ratio: 16/9; background: var(--color-surface); }
.tile-card__image { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.3s var(--ease); }
.tile-card:hover .tile-card__image { transform: scale(1.03); }
.tile-card__body { padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-2); flex: 1; }
.tile-card__meta { display: flex; align-items: center; gap: 0.4rem; flex-wrap: wrap; }
.tile-card__date { font-size: 0.72rem; color: var(--color-date); font-weight: 500; }
.tile-card__cat {
  font-size: 0.6rem; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--color-primary);
}
.tile-card__title {
  font-family: var(--font-display);
  font-size: clamp(0.9rem, 0.85rem + 0.3vw, 1.1rem);
  font-weight: 400; line-height: 1.25; color: var(--color-title);
}
@media (max-width: 900px) { .feed-tiles { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 500px)  { .feed-tiles { grid-template-columns: 1fr; } }

/* ── Category grid ───────────────────────────────────────────────────────── */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  padding-top: var(--space-8);
}
.cat-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex; flex-direction: column;
}
.cat-card__image-wrap { aspect-ratio: 16/9; overflow: hidden; background: var(--color-surface); }
.cat-card__image { width: 100%; height: 100%; object-fit: cover; display: block; }
.cat-card__body { padding: var(--space-6); display: flex; flex-direction: column; gap: var(--space-3); flex: 1; }
.cat-card__title {
  font-family: var(--font-display);
  font-size: clamp(1rem, 0.9rem + 0.4vw, 1.25rem);
  font-weight: 400; color: var(--color-title);
}
.cat-card__desc { font-size: 0.875rem; color: var(--color-text-muted); line-height: 1.55; }
.cat-card__tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: auto; padding-top: var(--space-3); }
.cat-card__tag {
  font-size: 0.75rem; font-weight: 500; color: var(--color-primary);
  text-decoration: none; border: 1px solid var(--color-border);
  border-radius: 2rem; padding: 3px 10px;
  display: inline-flex; align-items: center; gap: 5px;
  transition: all var(--t-fast);
}
.cat-card__tag:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.cat-card__count { font-size: 0.65rem; opacity: 0.65; }
@media (max-width: 900px) { .cat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px)  { .cat-grid { grid-template-columns: 1fr; } }

.home__feed-heading {
  font-family: var(--font-body); font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-text-faint);
}

/* ── Feed cards ──────────────────────────────────────────────────────────── */
.feed-card {
  padding-block: var(--space-8);
  border-bottom: 1px solid var(--color-border);
  display: flex; flex-direction: column; gap: var(--space-2);
}
.feed-card:first-of-type { border-top: 1px solid var(--color-border); }

.feed-card--rich {
  flex-direction: column;
  gap: 0;
  align-items: stretch;
}
.feed-card__header { margin-bottom: var(--space-8); }
.feed-card__image-link { display: block; margin-bottom: var(--space-4); }
.feed-card__image {
  width: 100%;
  height: clamp(220px, 35vw, 480px);
  object-fit: cover; border-radius: var(--radius-md);
  display: block;
}
.feed-card__body { display: flex; flex-direction: column; gap: var(--space-2); }
.feed-card__meta { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.feed-card__date { font-size: 0.8rem; color: var(--color-date); font-weight: 500; }
.feed-card__cat {
  font-size: 0.65rem; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--color-primary); text-decoration: none;
  transition: color var(--t-fast);
}
.feed-card__cat:hover { color: var(--color-text); }
.feed-card__title {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 1rem + 0.5vw, 1.45rem);
  font-weight: 400; line-height: 1.25;
}
.feed-card__title a { color: var(--color-title); text-decoration: none; transition: color var(--t-fast); }
.feed-card__title a:hover { color: var(--color-primary); }
.feed-card__summary { color: var(--color-text-muted); font-size: 0.9rem; line-height: 1.55; }
.feed-card__read-more {
  font-size: 0.85rem; font-weight: 600; color: var(--color-primary);
  text-decoration: none; align-self: flex-start; transition: color var(--t-fast);
}
.feed-card__read-more:hover { color: var(--color-primary-hover); }
@media (max-width: 600px) {
  .feed-card__image { height: 200px; }
}

/* ── Single post ─────────────────────────────────────────────────────────── */
.single { padding-block: var(--space-12); }
.post {
  max-width: var(--inner-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}
.post__header {
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}
.post__meta { display: flex; align-items: center; gap: var(--space-4); flex-wrap: wrap; margin-bottom: var(--space-4); }
.post__date { font-size: 0.8rem; color: var(--color-text-faint); }
.post__categories { font-size: 0.75rem; color: var(--color-text-muted); }
.post__title { font-family: var(--font-display); margin-bottom: var(--space-4); }
.post__summary { font-style: italic; color: var(--color-text-muted); font-size: 1.05rem; }
.post__body { line-height: 1.8; }
.post__body h1, .post__body h2, .post__body h3,
.post__body h4 { text-transform: none !important; }
.post__body h2 { margin-top: var(--space-10); margin-bottom: var(--space-4); }
.post__body h3 { margin-top: var(--space-8); margin-bottom: var(--space-2); }
.post__body p { margin-bottom: var(--space-4); }
.post__body ul, .post__body ol { padding-left: var(--space-6); margin-bottom: var(--space-4); }
.post__body li { margin-bottom: var(--space-2); }
.post__body img { width: 100%; height: auto; border-radius: var(--radius-md); margin-block: var(--space-6); }
.post__body blockquote {
  border-left: 3px solid var(--color-border-strong);
  padding-left: var(--space-6); margin-block: var(--space-6);
  color: var(--color-text-muted); font-style: italic;
}
.post__footer { margin-top: var(--space-12); padding-top: var(--space-6); border-top: 1px solid var(--color-border); }
.post__back { font-size: 0.9rem; color: var(--color-text-muted); text-decoration: none; }
.post__back:hover { color: var(--color-primary); }
.post__tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: var(--space-4); }
.post__tag {
  font-size: 0.72rem; color: var(--color-text-muted); text-decoration: none;
  border: 1px solid var(--color-border); border-radius: 2rem; padding: 2px 8px;
  transition: all var(--t-fast);
}
.post__tag:hover { color: var(--color-primary); border-color: var(--color-primary); }

/* ── List pages (tag/category archives) ─────────────────────────────────── */
.list { padding-block: var(--space-12); }
.list__header {
  max-width: var(--inner-width); margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  margin-bottom: var(--space-8); padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}
.list__posts {
  max-width: var(--inner-width); margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}
.list__description { margin-top: var(--space-4); color: var(--color-text-muted); }

/* ── Reading guide (categories page) ────────────────────────────────────── */
.categories-page { padding-block: var(--space-12); }
.categories-page .inner {
  max-width: var(--inner-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}
.categories-page .list__header {
  max-width: none; margin-inline: 0; padding-inline: 0;
}
.reading-group {
  padding-block: var(--space-10);
  border-bottom: 1px solid var(--color-border);
}
.reading-group:first-of-type { border-top: 1px solid var(--color-border); }
.reading-group__title {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 1rem + 0.5vw, 1.5rem);
  font-weight: 400; margin-bottom: var(--space-3);
}
.reading-group__desc {
  color: var(--color-text-muted); font-size: 0.95rem;
  max-width: 60ch; margin-bottom: var(--space-6);
}
.reading-group__cats { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.reading-group__cat {
  font-size: 0.875rem; font-weight: 500; color: var(--color-primary);
  text-decoration: none; border: 1px solid var(--color-border);
  border-radius: 2rem; padding: 5px 14px;
  display: inline-flex; align-items: center; gap: 6px;
  transition: all var(--t-fast);
}
.reading-group__cat:hover {
  background: var(--color-primary); color: #fff; border-color: var(--color-primary);
}
.reading-group__count { font-size: 0.7rem; font-weight: 400; opacity: 0.65; }

/* ── Tag cloud ───────────────────────────────────────────────────────────── */
.tag-cloud-section {
  padding-block: var(--space-10);
  border-top: 1px solid var(--color-border);
}
.tag-cloud__heading {
  font-family: var(--font-body); font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-text-faint); margin-bottom: var(--space-6);
}
.tag-cloud { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: baseline; }
.tag-cloud__tag {
  text-decoration: none; color: var(--color-text-muted);
  font-family: var(--font-body); letter-spacing: 0.01em;
  border: 1px solid var(--color-border); border-radius: 2rem;
  padding: 3px 10px; transition: all var(--t-fast);
  display: inline-flex; align-items: center; gap: 5px;
}
.tag-cloud__tag:hover {
  color: var(--color-primary); border-color: var(--color-primary);
  background: rgba(107,76,42,0.05);
}
.tag-cloud__tag--sm { font-size: 0.75rem; }
.tag-cloud__tag--md { font-size: 0.875rem; }
.tag-cloud__tag--lg { font-size: 1rem; font-weight: 600; color: var(--color-text); }
.tag-cloud__count { font-size: 0.65rem; color: var(--color-text-faint); font-weight: 400; }

/* ── About page ──────────────────────────────────────────────────────────── */
.about-page { padding-block: var(--space-12); }
.about-page .inner {
  max-width: var(--inner-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

/* ── Site footer ─────────────────────────────────────────────────────────── */
.site-footer {
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem; color: var(--color-text-muted);
}
.site-footer__inner {
  max-width: var(--site-width); margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  display: flex; flex-wrap: wrap; align-items: center;
  justify-content: space-between; gap: var(--space-4);
}
.site-footer__nav { display: flex; flex-wrap: wrap; gap: var(--space-4); }
.site-footer__nav a, .site-footer__copy a {
  color: var(--color-text-muted); text-decoration: none; transition: color var(--t-fast);
}
.site-footer__nav a:hover, .site-footer__copy a:hover { color: var(--color-primary); }

/* ── Reduced motion ──────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}