/* Reps system: monochrome base, amber accent, strict grid, fast controlled motion */
:root {
  --bg: #0c0d11;
  --panel: #11141b;
  --panel-alt: #151923;
  --line: #1f232d;
  --muted-line: rgba(255, 255, 255, 0.05);
  --text: #e8eaef;
  --muted: #9aa1ac;
  --accent: #f19a3c;
  --accent-strong: #ffb45c;
  --shadow: 0 18px 36px rgba(0, 0, 0, 0.4);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --font: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --space-1: 0.35rem;
  --space-2: 0.65rem;
  --space-3: 1rem;
  --space-4: 1.25rem;
  --space-5: 1.75rem;
  --space-6: 2.5rem;
  --space-7: 3.25rem;
  --grid: 68px;
  --speed-fast: 120ms;
  --speed-med: 180ms;
}

* { box-sizing: border-box; }

html {
  overflow-y: scroll;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg);
  background-image:
    radial-gradient(120% 80% at 50% 16%, rgba(255, 255, 255, 0.04), transparent 70%);
  background-size: 100% 100%;
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--text); text-decoration: none; transition: color var(--speed-fast) ease; }

a:hover, a:focus-visible { color: var(--accent-strong); }

.container { width: min(1200px, calc(100% - 2rem)); margin: 0 auto; }

.content-container { flex: 1 0 auto; }

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-2);
  font-weight: 650;
  letter-spacing: 0.01em;
}

p { margin: 0 0 var(--space-3); color: var(--muted); }

.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0; }

.frame {
  width: min(1200px, calc(100% - 2rem));
  margin: 0 auto;
  padding-inline: 0;
  position: relative;
}

.grid-rails::before, .grid-rails::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--muted-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--muted-line) 1px, transparent 1px);
  background-size: var(--grid) var(--grid);
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.6), rgba(0,0,0,0.05));
}

main {
  width: min(1080px, 100%);
  margin: 0 auto;
  padding: var(--space-7) 0 var(--space-6);
  position: relative;
  display: grid;
  gap: var(--space-4);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(12, 13, 17, 0.92);
  border-bottom: 1px solid var(--line);
}

.navbar { width: 100%; }

.navbar-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-3) 0;
}

.navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
}

.navbar-brand-logo { width: 44px; height: 44px; border-radius: 10px; box-shadow: 0 0 0 1px var(--line); background: #111; object-fit: contain; }

.brand-mark { font-size: 0.95rem; color: var(--muted); }

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.6rem;
  gap: 0.35rem;
  flex-direction: column;
  transition: border-color var(--speed-fast) ease, transform var(--speed-fast) ease;
}

.nav-toggle-bar { width: 22px; height: 2px; background: currentColor; display: block; }

.navbar-collapse {
  display: grid;
  grid-template-columns: auto auto;
  align-items: center;
  gap: var(--space-3);
  justify-content: end;
}

.nav-links {
  list-style: none;
  display: inline-flex;
  gap: var(--space-3);
  padding: 0;
  margin: 0;
}

.nav-link {
  color: var(--muted);
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.35rem 0.45rem;
  border-radius: var(--radius-sm);
  transition: color var(--speed-fast) ease, background var(--speed-fast) ease;
}

.nav-link:hover, .nav-link:focus-visible { color: var(--text); background: rgba(255, 255, 255, 0.04); }

.nav-link.active { color: var(--accent); }

.nav-search { display: inline-flex; align-items: center; gap: var(--space-2); }

.form-control, .form-select, textarea.form-control {
  width: 100%;
  background: var(--panel-alt);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: border-color var(--speed-fast) ease, box-shadow var(--speed-fast) ease, background var(--speed-fast) ease;
}

.form-control:focus-visible, .form-select:focus-visible, textarea.form-control:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(241, 154, 60, 0.22);
}

.form-label { display: block; margin-bottom: var(--space-1); color: var(--muted); font-size: 0.95rem; }

.form-check { display: flex; align-items: center; gap: 0.5rem; }

.form-check-input { width: 1.05rem; height: 1.05rem; border-radius: var(--radius-sm); border: 1px solid var(--line); background: var(--panel-alt); }

.btn {
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: 0.55rem 1.2rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform var(--speed-fast) ease, background var(--speed-fast) ease, color var(--speed-fast) ease, border-color var(--speed-fast) ease, box-shadow var(--speed-fast) ease;
}

.btn:focus-visible { outline: 2px solid rgba(241, 154, 60, 0.28); outline-offset: 2px; }

.btn-primary { background: var(--accent); color: #1b0e01; box-shadow: 0 10px 30px rgba(241, 154, 60, 0.25); }
.btn-primary:hover { background: var(--accent-strong); transform: translateY(-1px); }

.btn-secondary { background: var(--panel-alt); border-color: var(--line); color: var(--text); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

.btn-outline-light { background: transparent; border-color: var(--line); color: var(--text); }
.btn-outline-light:hover { border-color: var(--accent); color: var(--accent-strong); }

.btn-danger { background: #c23b3b; border-color: #c23b3b; color: #fff; }
.btn-danger:hover { background: #d54a4a; }

.btn-link { background: none; border: none; color: var(--accent); padding: 0; }
.btn-sm { padding: 0.35rem 0.8rem; font-size: 0.9rem; }
.btn-pill { border-radius: 999px; }

.tag-filter { margin: var(--space-5) 0; padding: var(--space-4) 0; display: grid; gap: var(--space-3); }
.tag-filter__label { text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.78rem; color: var(--muted); }
.tag-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag-pill { display: inline-flex; align-items: center; border: 1px solid var(--line); color: var(--text); padding: 0.25rem 0.9rem; border-radius: 999px; font-size: 0.92rem; background: var(--panel-alt); transition: border-color var(--speed-fast) ease, color var(--speed-fast) ease, background var(--speed-fast) ease; }
.tag-pill:hover { border-color: var(--accent); color: var(--accent); }
.tag-pill.is-active { background: var(--accent); border-color: var(--accent); color: #1b0e01; box-shadow: 0 8px 18px rgba(241, 154, 60, 0.3); }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}

.card::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  border: 1px solid rgba(255, 255, 255, 0.02);
  border-radius: inherit;
}

.card.card-interactive { transition: transform var(--speed-fast) ease, border-color var(--speed-fast) ease, box-shadow var(--speed-fast) ease; }
.card.card-interactive:hover { transform: translateY(-3px); border-color: rgba(241, 154, 60, 0.4); box-shadow: 0 24px 44px rgba(0, 0, 0, 0.5); }

.card.card-linkable { position: relative; cursor: pointer; }
.card.card-linkable:focus-visible { outline: 2px solid rgba(241, 154, 60, 0.5); outline-offset: 2px; }

.card-body { padding: var(--space-5); }
.card-header { padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--line); color: var(--muted); font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; font-size: 0.85rem; }
.card-title { margin-bottom: var(--space-1); font-size: 1.35rem; }
.card-subtitle { color: var(--muted); font-size: 0.95rem; }
.card-text { color: var(--muted); }

.badge { display: inline-flex; align-items: center; border-radius: 999px; padding: 0.1rem 0.65rem; font-size: 0.8rem; font-weight: 650; border: 1px solid var(--line); }
.bg-secondary { background: var(--panel-alt); color: var(--text); }
.bg-info { background: rgba(241, 154, 60, 0.12); color: var(--accent); border-color: rgba(241, 154, 60, 0.3); }

.post-single__header { margin-bottom: var(--space-4); }
.post-meta { color: var(--muted); font-size: 0.94rem; display: flex; gap: var(--space-2); align-items: center; flex-wrap: wrap; }
.post-content { color: var(--text); font-size: 1.08rem; line-height: 1.8; }
.post-content img, .card-text img, #previewContent img { border-radius: var(--radius-md); margin: var(--space-3) 0; box-shadow: 0 12px 26px rgba(0, 0, 0, 0.38); width: 100%; height: auto; }
.post-tags { margin-top: var(--space-4); }
.post-actions { margin-top: var(--space-3); display: flex; gap: var(--space-2); }

.footer { border-top: 1px solid var(--line); padding: var(--space-4) 0; color: var(--muted); text-align: center; font-size: 0.95rem; }

.list-group { list-style: none; margin: 0; padding: 0; }
.list-group-item { border-top: 1px solid var(--line); padding: var(--space-3) var(--space-5); display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); color: var(--text); background: var(--panel); }
.list-group-flush .list-group-item:first-child { border-top: none; }
.list-group-item a { color: inherit; }

.row { display: flex; flex-wrap: wrap; margin: -0.75rem; }
.row > [class^="col-"] { padding: 0.75rem; flex: 1 1 100%; }
.row.g-4 { margin: -1rem; }
.row.g-4 > [class^="col-"] { padding: 1rem; }
.col-md-3, .col-md-9 { flex: 1 1 100%; }

.nav { display: flex; gap: var(--space-2); padding: 0; margin: 0; list-style: none; }
.nav-tabs, .nav-pills { border-bottom: 1px solid var(--line); }
.nav-tabs .nav-link, .nav-pills .nav-link { border: none; background: transparent; color: var(--muted); padding: 0.35rem 1rem; border-radius: var(--radius-sm); transition: color var(--speed-fast) ease, background var(--speed-fast) ease; }
.nav-tabs .nav-link.active, .nav-pills .nav-link.active { color: var(--text); background: var(--panel-alt); }

.tab-content { position: relative; }
.tab-pane { display: none; opacity: 1; }
.tab-pane.fade { transition: opacity var(--speed-med) ease; }
.tab-pane.fade:not(.show) { opacity: 0; }
.tab-pane.active { display: block; opacity: 1; }

.accordion { border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.accordion-item + .accordion-item { border-top: 1px solid var(--line); }
.accordion-button { width: 100%; text-align: left; background: var(--panel); border: none; color: var(--text); padding: var(--space-3) var(--space-4); font-size: 1rem; font-weight: 650; display: flex; justify-content: space-between; align-items: center; transition: background var(--speed-fast) ease; }
.accordion-button::after { content: '+'; font-weight: 700; }
.accordion-button[aria-expanded="true"]::after { content: '-'; }
.accordion-button:hover { background: var(--panel-alt); }
.accordion-collapse { border-top: 1px solid var(--line); }
.accordion-collapse:not(.show) { display: none; }
.accordion-body { padding: var(--space-4); }

.d-flex { display: flex; }
.d-none { display: none !important; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }
.ms-2 { margin-left: var(--space-2); }
.ms-3 { margin-left: var(--space-3); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.p-0 { padding: 0 !important; }
.flex-grow-1 { flex: 1; }

.list-group-item form { margin: 0; }
.accordion-button.collapsed { background: var(--panel); }
.nav-tabs .nav-link:focus-visible, .nav-pills .nav-link:focus-visible, .accordion-button:focus-visible, .nav-toggle:focus-visible { outline: 2px solid rgba(241, 154, 60, 0.24); outline-offset: 2px; }

.article-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: var(--space-4); }

.meta-label { text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.78rem; color: var(--muted); }

motion-lift, .motion-lift { transition: transform var(--speed-fast) ease, border-color var(--speed-fast) ease, box-shadow var(--speed-fast) ease; }
.motion-lift:hover { transform: translateY(-2px); }

@media (max-width: 960px) {
  .navbar-inner { grid-template-columns: 1fr auto; }
  .navbar-collapse { grid-template-columns: 1fr; justify-items: start; max-height: 0; overflow: hidden; transition: max-height var(--speed-med) ease; width: 100%; }
  .navbar-collapse[data-open="true"] { max-height: 480px; margin-top: var(--space-2); }
  .nav-links { flex-direction: column; width: 100%; }
  .nav-search { width: 100%; }
  .nav-toggle { display: inline-flex; justify-self: end; }
  main { padding: var(--space-6) 0; }
}

@media (min-width: 768px) {
  .col-md-3 { flex: 0 0 25%; max-width: 25%; }
  .col-md-9 { flex: 0 0 75%; max-width: 75%; }
  .flex-md-column { flex-direction: column; }
}

@media (max-width: 600px) {
  body { background-size: var(--grid) var(--grid), var(--grid) var(--grid), 90% 50%, 60% 40%; }
  .frame { width: calc(100% - 1.5rem); }
}

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