/* ═══════════════════════════════════════════════════════
   ЗнайВсё — Design System (inspired by fixer.crossgroup.su)
   ═══════════════════════════════════════════════════════ */

:root {
  --ink: #0E0E0E;
  --surface: #141414;
  --line: #1E1E1E;
  --accent: #C8A951;
  --paper: #F0EDE6;
  --mute: #7A7672;
  --radius: 10px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  background: var(--ink);
  color: var(--paper);
  font-family: 'Inter', sans-serif;
  font-feature-settings: 'ss01', 'cv11';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Loader ─────────────────────────────────────────── */
.loader {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 60vh;
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

/* ── Layout ─────────────────────────────────────────── */
#app {
  max-width: 1320px;
  margin: 0 auto;
  padding: 3rem 2rem 6rem;
}

/* ── Ticker (бегущая строка) ────────────────────────── */
.ticker {
  overflow: hidden;
  white-space: nowrap;
  padding: 1rem 0 2rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--line);
}

.ticker-track {
  display: inline-block;
  animation: ticker-scroll 40s linear infinite;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--mute);
  letter-spacing: 0.5em;
  text-transform: uppercase;
}

.ticker-track span {
  margin: 0 2rem;
  color: var(--accent);
}

@keyframes ticker-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ── Site Header ────────────────────────────────────── */
.site-header {
  text-align: center;
  margin-bottom: 4rem;
}

.site-header h1 {
  font-family: 'Playfair Display', serif;
  font-size: 3.5rem;
  font-weight: 600;
  color: var(--paper);
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
  line-height: 1.15;
}

.site-header .kicker {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: 0.35em;
  text-transform: uppercase;
}

.site-header .section-marker {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  color: var(--mute);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

/* ── Topic Grid ─────────────────────────────────────── */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.topic-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.25s, transform 0.2s;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  min-height: 220px;
  padding: 0;
}

.topic-card .card-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: var(--radius);
}

.topic-card .card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(14,14,14,0.3) 0%, rgba(14,14,14,0.85) 70%, rgba(14,14,14,0.95) 100%);
  border-radius: var(--radius);
}

.topic-card .card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
  position: relative;
  z-index: 2;
  justify-content: flex-end;
}

.topic-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}

.topic-card:hover {
  border-color: var(--accent);
  background: #181818;
  transform: translateY(-2px);
}

.topic-card:hover::before {
  transform: scaleX(1);
}

.topic-card .icon {
  font-size: 2rem;
  line-height: 1;
}

.topic-card .name {
  font-family: 'Playfair Display', serif;
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--paper);
  line-height: 1.25;
}

.topic-card .desc {
  font-size: 0.88rem;
  color: var(--mute);
  line-height: 1.55;
  flex: 1;
}

.topic-card .count {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* ── Topic Page ─────────────────────────────────────── */
.topic-header {
  margin-bottom: 3rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--mute);
  text-decoration: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
  cursor: pointer;
  transition: color 0.2s;
}

.back-link:hover { color: var(--accent); }

.topic-title {
  font-family: 'Playfair Display', serif;
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--paper);
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

.topic-desc {
  color: var(--mute);
  font-size: 1rem;
  max-width: 560px;
  line-height: 1.6;
}

/* ── Article List ───────────────────────────────────── */
.article-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.article-item {
  background: var(--surface);
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  transition: background 0.2s;
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.article-item:hover {
  background: #181818;
}

.article-item .num {
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent);
  font-size: 0.78rem;
  min-width: 2rem;
  opacity: 0.7;
}

.article-item .title {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--paper);
  flex: 1;
  line-height: 1.4;
}

.article-item .time {
  font-family: 'JetBrains Mono', monospace;
  color: var(--mute);
  font-size: 0.72rem;
  white-space: nowrap;
  letter-spacing: 0.05em;
}

/* ── Article Hero Image ──────────────────────────────── */
.article-hero {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 2rem;
  border: 1px solid var(--line);
}

/* ── Article Page ───────────────────────────────────── */
.article-container {
  max-width: 700px;
  margin: 0 auto;
}

.article-container h1 {
  font-family: 'Playfair Display', serif;
  font-size: 2.4rem;
  font-weight: 600;
  color: var(--paper);
  margin-bottom: 1rem;
  line-height: 1.25;
  letter-spacing: 0.02em;
}

.article-container h2 {
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--paper);
  margin: 2.5rem 0 0.75rem;
  line-height: 1.3;
}

.article-container h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--paper);
  margin: 1.75rem 0 0.5rem;
}

.article-container p {
  margin-bottom: 1.15rem;
  line-height: 1.75;
  color: #d8d4ce;
  font-size: 1.02rem;
}

.article-container strong {
  color: var(--paper);
  font-weight: 600;
}

.article-container em {
  color: var(--mute);
  font-style: italic;
}

.article-container ul, .article-container ol {
  margin: 0.75rem 0 1.25rem 1.5rem;
}

.article-container li {
  margin-bottom: 0.45rem;
  line-height: 1.65;
  color: #d8d4ce;
}

.article-container blockquote {
  border-left: 2px solid var(--accent);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  background: var(--surface);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--mute);
  font-style: italic;
  font-size: 0.98rem;
}

.article-container code {
  background: #1a1a1a;
  color: var(--accent);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88em;
}

.article-container pre {
  background: #111;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  line-height: 1.55;
}

.article-container pre code {
  background: none;
  padding: 0;
  color: #c0beb8;
  font-size: 0.85rem;
}

.article-container hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 2.5rem 0;
}

.article-container a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.article-container a:hover {
  border-bottom-color: var(--accent);
}

/* ── Error ──────────────────────────────────────────── */
.error-page {
  text-align: center;
  padding: 6rem 2rem;
}

.error-page h2 {
  font-family: 'Playfair Display', serif;
  font-size: 1.75rem;
  color: var(--paper);
  margin-bottom: 0.75rem;
}

.error-page p {
  color: var(--mute);
  margin-bottom: 2.5rem;
  font-size: 0.95rem;
}

/* ── Footer ─────────────────────────────────────────── */
.site-footer {
  text-align: center;
  padding: 3rem 0 0;
  margin-top: 4rem;
  border-top: 1px solid var(--line);
}

.site-footer .ticker-bottom {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--mute);
  letter-spacing: 0.4em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.site-footer .ticker-bottom span {
  color: var(--accent);
}

.site-footer .copyright {
  font-size: 0.75rem;
  color: var(--mute);
  letter-spacing: 0.05em;
}

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 768px) {
  #app { padding: 1.5rem 1rem 3rem; }
  .site-header h1 { font-size: 2.2rem; }
  .topic-grid { grid-template-columns: 1fr; }
  .article-container h1 { font-size: 1.7rem; }
  .article-container h2 { font-size: 1.2rem; }
  .topic-title { font-size: 1.8rem; }
  .article-item { padding: 1rem 1.25rem; }
}