/* ============================================================
   trentuna.com — design system
   Bold monochrome cyberbrutalism. oklch, hue-driven, no framework.
   Dark by default, warm editorial light mode via [data-theme="light"].
   ============================================================ */

:root {
  --hue: 210;
  --surface: oklch(15% .025 var(--hue));
  --surface-alt: oklch(18% .025 var(--hue));
  --text: oklch(85% .01 var(--hue));
  --text-secondary: oklch(60% .015 var(--hue));
  --text-dim: oklch(48% .012 var(--hue));
  --border: oklch(28% .02 var(--hue));
  --border-strong: oklch(38% .025 var(--hue));
  --link: oklch(70% .14 calc(var(--hue) + 30));
  --ascii-color: oklch(35% .02 var(--hue));

  --accent-green:  oklch(65% .2  calc(var(--hue) - 60));
  --accent-yellow: oklch(85% .2  calc(var(--hue) - 110));
  --accent-blue:   oklch(65% .2  calc(var(--hue) + 30));
  --accent-red:    oklch(65% .25 calc(var(--hue) + 150));

  --space: 1.25rem;
  --space-sm: 0.6rem;
  --content-max: 1080px;
  --rule: 1px solid var(--border);

  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --font-serif: 'Source Serif 4', Georgia, serif;
}

[data-theme="light"] {
  --surface: oklch(95% .008 55);
  --surface-alt: oklch(91% .01 55);
  --text: oklch(20% .015 var(--hue));
  --text-secondary: oklch(42% .012 var(--hue));
  --text-dim: oklch(55% .01 var(--hue));
  --border: oklch(80% .015 var(--hue));
  --border-strong: oklch(68% .02 var(--hue));
  --link: oklch(48% .16 calc(var(--hue) + 30));
  --ascii-color: oklch(70% .02 var(--hue));
  --accent-green:  oklch(50% .18 calc(var(--hue) - 60));
  --accent-yellow: oklch(60% .15 calc(var(--hue) - 110));
  --accent-blue:   oklch(50% .18 calc(var(--hue) + 30));
  --accent-red:    oklch(50% .22 calc(var(--hue) + 150));
}

/* ── reset ── */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; }
ul, ol { list-style: none; }
button { font: inherit; }

body {
  font-family: var(--font-mono);
  background: var(--surface);
  color: var(--text);
  line-height: 1.6;
  font-size: 0.95rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background .3s, color .3s;
}

/* static scan overlay */
body::before {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none; z-index: 9999;
  background: repeating-linear-gradient(0deg,
    transparent 0px, transparent 2px,
    rgba(0,0,0,0.03) 2px, rgba(0,0,0,0.03) 4px);
}

a { color: var(--link); text-decoration: underline; text-underline-offset: 2px; }
a:hover { color: var(--text); }

/* ── header ── */
.head {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space); flex-wrap: wrap;
  max-width: var(--content-max); width: 100%;
  margin: 0 auto; padding: var(--space);
  border-bottom: var(--rule);
}
.logo {
  display: flex; align-items: center; gap: var(--space-sm);
  text-decoration: none; color: var(--text);
}
.logo-circle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.2rem; height: 2.2rem;
  border: 2px solid var(--text); border-radius: 50%;
  font-family: var(--font-sans); font-weight: 900;
  font-size: 0.85rem; line-height: 1;
}
.logo-word {
  font-family: var(--font-sans); font-weight: 900;
  font-size: 1.1rem; text-transform: uppercase; letter-spacing: -0.02em;
}
.top-nav ul { display: flex; gap: var(--space); flex-wrap: wrap; }
.top-nav a {
  text-decoration: none; color: var(--text-secondary);
  text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.75rem;
}
.top-nav a:hover { color: var(--text); }
.top-nav a.active { color: var(--text); border-bottom: 2px solid var(--text); padding-bottom: 2px; }
/* search input */
.search-input {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.25rem 0.5rem;
  width: 8rem;
  letter-spacing: 0.05em;
  transition: border-color .2s, width .2s;
  outline: none;
}
.search-input:focus {
  border-color: var(--accent-blue);
  width: 12rem;
}
.search-input::placeholder {
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.top-actions { display: flex; align-items: center; gap: var(--space-sm); }
.theme-btn {
  background: none; border: 1px solid var(--border);
  color: var(--text-secondary); font-family: var(--font-mono);
  font-size: 0.7rem; padding: 0.25rem 0.5rem; cursor: pointer;
  letter-spacing: 0.1em; text-transform: uppercase;
  transition: border-color .2s, color .2s;
}
.theme-btn:hover { border-color: var(--text); color: var(--text); }
.auth-link {
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--text-secondary); text-decoration: none;
  border: 1px solid var(--border); padding: 0.25rem 0.5rem;
}
.auth-link:hover { border-color: var(--text); color: var(--text); }
.auth-link.authed { border-color: var(--accent-green); color: var(--accent-green); }

/* ── main ── */
main {
  flex: 1;
  max-width: var(--content-max); width: 100%;
  margin: 0 auto; padding: calc(var(--space) * 1.6) var(--space);
}
.loading {
  color: var(--text-dim);
  font-style: italic;
  animation: loading-pulse 1.6s ease-in-out infinite;
}
@keyframes loading-pulse {
  0%, 100% { opacity: 0.5; }
  50%      { opacity: 1; }
}

/* ── hero ── */
.hero { margin-bottom: calc(var(--space) * 2); }
.giant-title {
  font-family: var(--font-sans); font-weight: 900;
  font-size: clamp(2.6rem, 9vw, 6.5rem); line-height: 0.92;
  text-transform: uppercase; letter-spacing: -0.03em;
  color: transparent;
  -webkit-text-stroke: 2px var(--border-strong);
}
.giant-title .filled { color: var(--text); -webkit-text-stroke: 0; }
.tagline {
  margin-top: var(--space);
  font-size: 0.8rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--text-secondary);
}
.blink-cursor::after {
  content: '█'; animation: blink 1s step-end infinite;
  margin-left: 0.15em; color: var(--text);
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

.stats-row { display: flex; gap: calc(var(--space) * 2); flex-wrap: wrap; margin: calc(var(--space) * 1.5) 0; }
.stat-block { display: flex; align-items: baseline; gap: var(--space-sm); }
.stat-number {
  font-family: var(--font-sans); font-weight: 900;
  font-size: clamp(2rem, 4vw, 3rem); line-height: 1;
  color: transparent; -webkit-text-stroke: 2px var(--text);
}
.stat-label {
  font-size: 0.7rem; color: var(--text-secondary);
  letter-spacing: 0.15em; text-transform: uppercase;
}

/* ── sections / cards ── */
.section { margin-bottom: calc(var(--space) * 2); }
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: var(--space);
}
.section-label {
  font-family: var(--font-sans); font-weight: 700; font-size: 0.75rem;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-secondary);
}
.section-more { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; }

.card-list { display: flex; flex-direction: column; }
.card-item {
  display: grid; grid-template-columns: 7rem 1fr auto;
  gap: var(--space); align-items: baseline;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none; color: var(--text);
  transition: background .15s, color .15s;
}
.card-item:hover { background: var(--surface-alt); color: var(--text); }
.card-date { font-size: 0.7rem; color: var(--text-dim); letter-spacing: 0.08em; }
.card-main { min-width: 0; }
.card-title { font-family: var(--font-sans); font-weight: 600; font-size: 1rem; }
.card-desc { font-size: 0.8rem; color: var(--text-secondary); line-height: 1.5; margin-top: 2px; }
.card-badge {
  font-size: 0.6rem; border: 1px solid var(--border-strong);
  padding: 1px 6px; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--text-secondary); white-space: nowrap;
}
.card-badges { display: flex; gap: 4px; align-items: center; justify-self: end; }
.badge-release { border-color: var(--accent-green); color: var(--accent-green); }
.badge-prototype { border-color: var(--accent-yellow); color: var(--accent-yellow); }
.badge-essay { border-color: var(--accent-blue); color: var(--accent-blue); }
.badge-post, .badge-note { border-color: var(--accent-red); color: var(--accent-red); }
.badge-study { border-color: var(--accent-blue); color: var(--accent-blue); }
.badge-dormant, .badge-internal, .badge-draft { border-color: var(--text-dim); color: var(--text-dim); }
.badge-review { border-color: var(--accent-yellow); color: var(--accent-yellow); }
.badge-ready { border-color: var(--accent-blue); color: var(--accent-blue); }
.badge-published { border-color: var(--border); color: var(--text-secondary); }
.badge-public { border-color: var(--border); color: var(--text-dim); }
.badge-private { border-color: var(--accent-red); color: var(--accent-red); }

.ascii-rule {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--ascii-color); letter-spacing: 0.3em;
  overflow: hidden; white-space: nowrap; user-select: none;
  margin: var(--space) 0;
}

/* ── activity feed ── */
.activity-item {
  display: grid; grid-template-columns: 8.5rem 1fr; gap: var(--space);
  padding: var(--space-sm) 0; border-bottom: 1px solid var(--border);
}
.activity-when { font-size: 0.7rem; color: var(--text-dim); }
.activity-what .who {
  font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--accent-yellow); margin-right: 0.5em;
}
.activity-what .what-title { font-family: var(--font-sans); font-weight: 600; font-size: 0.9rem; }
.activity-what .what-summary { font-size: 0.78rem; color: var(--text-secondary); margin-top: 2px; }


/* share */
.copy-link-btn {
  background: none; border: 1px solid var(--border);
  color: var(--text-dim); cursor: pointer; font-size: 0.7rem;
  font-family: var(--font-mono); text-transform: uppercase;
  letter-spacing: 0.1em; padding: 0 0.4rem;
  border-radius: 2px; transition: color .2s, border-color .2s;
}
.copy-link-btn:hover { color: var(--text); border-color: var(--text); }
.copy-link-btn { position: relative; overflow: visible; }
.copy-link-btn.copied { color: var(--accent-green); border-color: var(--accent-green); }
.copy-link-btn.copied::after {
  content: 'Copied!';
  position: absolute; bottom: 100%; left: 50%;
  transform: translateX(-50%);
  background: var(--accent-green); color: #000;
  font-size: 0.6rem; font-family: var(--font-mono);
  text-transform: uppercase; letter-spacing: 0.1em;
  padding: 2px 6px; border-radius: 3px;
  white-space: nowrap; pointer-events: none;
  opacity: 0;
  animation: copy-toast 2s ease forwards;
}
@keyframes copy-toast {
  0%   { opacity: 0; transform: translateX(-50%) translateY(4px); }
  15%  { opacity: 1; transform: translateX(-50%) translateY(0); }
  75%  { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(-4px); }
}
/* ── article / prose ── */
.article-head { margin-bottom: calc(var(--space) * 1.5); }
.breadcrumb { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: var(--space); }
.article-title {
  font-family: var(--font-sans); font-weight: 900;
  font-size: clamp(1.6rem, 4vw, 2.6rem); line-height: 1.1;
  text-transform: uppercase; letter-spacing: -0.02em;
}
.article-meta {
  margin-top: var(--space-sm);
  font-size: 0.7rem; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 0.1em;
  display: flex; gap: var(--space); flex-wrap: wrap;
}
.article-desc { margin-top: var(--space-sm); color: var(--text-secondary); font-style: italic; max-width: 60ch; }

.prose { max-width: 68ch; font-size: 0.95rem; line-height: 1.75; }

/* long-form (essays, studies) reads in serif — notes stay monospace */
.prose.serif {
  font-family: var(--font-serif);
  font-size: 1.12rem;
  line-height: 1.8;
}
.prose.serif p { margin: 0.9em 0; }
.prose.serif em { font-style: italic; }
.prose h1, .prose h2, .prose h3, .prose h4 {
  font-family: var(--font-sans); line-height: 1.3;
  margin: 1.6em 0 0.5em;
}
.prose h1 { font-size: 1.6rem; font-weight: 900; }
.prose h2 { font-size: 1.25rem; font-weight: 700; border-bottom: 1px solid var(--border); padding-bottom: 0.3em; }
.prose h3 { font-size: 1.05rem; font-weight: 700; }
.prose p { margin: 0.8em 0; }
.prose ul, .prose ol { list-style: revert; padding-left: 1.5em; margin: 0.6em 0; }
.prose li { margin-bottom: 0.25em; }
.prose code {
  font-family: var(--font-mono); font-size: 0.85em;
  padding: 0.1em 0.35em; background: var(--surface-alt); border-radius: 3px;
}
.prose pre {
  background: var(--surface-alt); border: var(--rule);
  padding: var(--space-sm); overflow-x: auto;
  font-size: 0.8rem; line-height: 1.5; margin: 1em 0;
}
.prose pre code { background: none; padding: 0; }
.prose blockquote {
  border-left: 3px solid var(--accent-blue);
  padding: 0.25em 1em; margin: 1em 0;
  color: var(--text-secondary); font-style: italic;
}
.prose table { width: 100%; border-collapse: collapse; font-size: 0.82rem; margin: 1em 0; }
.prose th, .prose td { padding: 0.4em 0.6em; border: var(--rule); text-align: left; }
.prose th { background: var(--surface-alt); }
.prose hr { border: none; border-top: var(--rule); margin: 1.5em 0; }
.prose img { border: var(--rule); }

/* ── tags ── */
.tag-row {
  display: flex; flex-wrap: wrap; gap: var(--space-sm);
  margin-top: var(--space);
}
.tag-link {
  font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--text-dim); text-decoration: none;
  border: 1px solid var(--border); padding: 0.15rem 0.5rem;
  transition: color .15s, border-color .15s;
}
.tag-link:hover { color: var(--text); border-color: var(--border-strong); }
.tag-link::before { content: '#'; opacity: 0.5; }
.tag-index { display: flex; flex-wrap: wrap; gap: var(--space-sm); margin-top: var(--space); }
.tag-index .tag-link { font-size: 0.75rem; padding: 0.3rem 0.7rem; }
.tag-count { opacity: 0.5; margin-left: 0.3em; }
.project-link {
  font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--accent-yellow); text-decoration: none;
  border: 1px solid var(--accent-yellow); padding: 0.15rem 0.5rem;
}

/* ── project sub-nav pill bar ── */
.pill-bar {
  display: flex; gap: 0; flex-wrap: wrap;
  margin: var(--space-sm) 0 var(--space) 0;
  border-bottom: var(--rule);
}
.pill-link {
  font-family: var(--font-mono);
  text-decoration: none; color: var(--text-secondary);
  text-transform: uppercase; letter-spacing: 0.12em;
  font-size: 0.75rem; padding: 0.4rem 1rem 0.4rem 0;
  transition: color .15s;
}
.pill-link:hover { color: var(--text); }
.pill-link.active {
  color: var(--text);
  border-bottom: 2px solid var(--text);
  margin-bottom: -1px;  /* sit on the pill-bar border */
  padding-bottom: calc(0.4rem - 2px);
}
.filter-bar { margin-bottom: var(--space); }
.filter-pill { display: inline-flex; align-items: baseline; gap: 0.35rem; }
.filter-count {
  font-size: 0.65rem;
  color: var(--text-secondary);
  opacity: 0.6;
}

/* ── login form ── */
.login-form { max-width: 26rem; display: flex; flex-direction: column; gap: var(--space-sm); }
.login-form input {
  font-family: var(--font-mono); font-size: 0.9rem;
  background: var(--surface-alt); color: var(--text);
  border: var(--rule); padding: 0.6rem;
}
.login-form input:focus { outline: 2px solid var(--accent-blue); }
.login-form button {
  background: var(--text); color: var(--surface);
  border: none; padding: 0.6rem; cursor: pointer;
  font-family: var(--font-sans); font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em;
}
.login-note { font-size: 0.75rem; color: var(--text-dim); }
.login-error { color: var(--accent-red); font-size: 0.8rem; }

/* ── footer ── */
.footer {
  max-width: var(--content-max); width: 100%;
  margin: 0 auto; padding: var(--space);
  font-size: 0.75rem; color: var(--text-dim);
}
.footer-row {
  display: flex; align-items: flex-end; justify-content: space-between; gap: calc(var(--space) * 1.5);
  padding: var(--space-sm) 0;
}
.footer-badge { flex-shrink: 0; text-decoration: none; display: block; }
.footer-badge .human-advisory { transition: transform .2s; }
.footer-badge:hover .human-advisory { transform: rotate(0deg) scale(1.04); }
.footer-text { min-width: 0; }
.imprint strong { font-family: var(--font-sans); text-transform: uppercase; }
.imprint-links { margin-top: var(--space-sm); }

@media (max-width: 720px) {
  .footer-row { flex-direction: column; align-items: flex-start; gap: var(--space); }
}

/* ── error/empty states ── */
.error-box {
  border: 1px solid var(--accent-red); padding: var(--space);
  color: var(--accent-red); font-size: 0.85rem;
}
.empty { color: var(--text-dim); font-style: italic; }

/* ── responsive ── */
@media (max-width: 720px) {
  .head { flex-direction: column; align-items: flex-start; }
  .search-input { width: 100%; }
  .search-input:focus { width: 100%; }
  .card-item { grid-template-columns: 1fr; gap: 4px; }
  .card-badge { justify-self: start; }
  .activity-item { grid-template-columns: 1fr; gap: 4px; }
}

/* ── scroll-to-top ── */
.scroll-top {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border-strong);
  border-radius: 0;
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  transform: translateY(0.75rem);
  transition: opacity 0.2s ease, transform 0.2s ease, border-color 0.15s, color 0.15s;
  pointer-events: none;
  z-index: 100;
}
.scroll-top.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.scroll-top:hover {
  border-color: var(--link);
  color: var(--link);
}
.scroll-top:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}

/* ── print ── */
@media print {
  /* hide chrome */
  .head, .footer, .ascii-rule,
  .top-actions, .theme-btn, .auth-link,
  body::before { display: none !important; }

  /* reset to black-on-white serif */
  *, *::before, *::after { background: transparent !important; color: #000 !important; }
  body {
    font-family: Georgia, 'Times New Roman', Times, serif !important;
    font-size: 11pt; line-height: 1.7;
  }
  a { text-decoration: underline; }
  .prose { max-width: none; }
  .prose.serif { font-family: Georgia, 'Times New Roman', Times, serif !important; }
  .prose pre, .prose code { font-family: 'Courier New', Courier, monospace !important; }

  /* show link URLs (skip nav/logo/UI links) */
  .prose a[href]::after { content: " (" attr(href) ")"; font-size: 0.75em; opacity: 0.7; }
  .prose a[href^="#"]::after { content: none; }

  /* avoid orphans/widows */
  p, li, blockquote { orphans: 3; widows: 3; }
  h1, h2, h3 { page-break-after: avoid; }
}