/* Синапс — локальный дайджест новостей об ИИ.
   Тёмная «лабораторная» тема: глубокий сине-графитовый фон, фиолетовый
   акцент, моноширинные метки данных. Без внешних зависимостей: системные
   шрифты, иллюстрации-заглушки — локальный SVG (data URI). Префикс sn-. */

/* ===== Токены ===== */
:root {
  --sn-bg:       #0f1218;
  --sn-paper:    #171c26;
  --sn-ink:      #e9eef7;
  --sn-text:     #c6cdd9;
  --sn-muted:    #8b94a3;
  --sn-muted-2:  #6e7787;
  --sn-line:     #262d3a;
  --sn-line-2:   #333c4d;
  --sn-accent:   #7c6cff;
  --sn-accent-2: #38d4c0;
  --sn-dark:     #0a0d12;
  --sn-accent-hover: #6a59f2;
  --sn-radius:    12px;
  --sn-radius-sm: 8px;
  --sn-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --sn-mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}

/* ===== База ===== */
*,
*::before,
*::after { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--sn-bg);
  color: var(--sn-text);
  font-family: var(--sn-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4, h5, h6, p { margin: 0; }
::selection { background: rgba(124, 108, 255, .35); }

.sn-wrap { width: min(1180px, 100% - 2.5rem); margin-inline: auto; }
.sn-vh {
  position: absolute !important;
  width: 1px; height: 1px; margin: -1px; padding: 0; border: 0;
  clip: rect(0 0 0 0); overflow: hidden; white-space: nowrap;
}
.sn-skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--sn-accent); color: #fff; padding: .6rem 1rem;
  border-radius: 0 0 10px 0; text-decoration: none; font-weight: 600;
}
.sn-skip:focus { left: 0; }
:focus-visible { outline: 2px solid var(--sn-accent-2); outline-offset: 2px; border-radius: 4px; }

/* ===== Шапка ===== */
.sn-topbar {
  position: sticky; top: 0; z-index: 20;
  background: rgba(15, 18, 24, .88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--sn-line);
}
.sn-topbar-in {
  display: flex; align-items: center; gap: 1.2rem;
  min-height: 64px; padding: .5rem 0; flex-wrap: wrap;
}
.sn-brand { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; }
.sn-mark { display: inline-grid; place-items: center; flex: none; }
.sn-mark-sm { transform: scale(.8); }
.sn-brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.sn-brand-name {
  font-size: 1.28rem; font-weight: 800; letter-spacing: -.01em; color: var(--sn-ink);
}
.sn-brand-tag {
  font-family: var(--sn-mono); font-size: .6rem; letter-spacing: .18em;
  text-transform: uppercase; color: var(--sn-accent-2);
}
.sn-nav { display: flex; align-items: center; gap: .95rem; flex-wrap: wrap; margin-left: auto; }
.sn-nav a {
  color: var(--sn-muted); text-decoration: none; font-size: .93rem; font-weight: 500;
  padding: .25rem 0; border-bottom: 2px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}
.sn-nav a:hover { color: var(--sn-ink); }
.sn-nav a[aria-current="page"] {
  color: var(--sn-ink); border-bottom-color: var(--sn-accent);
}

/* ===== Поиск ===== */
.sn-search { display: flex; gap: .45rem; }
.sn-search input {
  width: min(170px, 40vw);
  background: var(--sn-paper); color: var(--sn-ink);
  border: 1px solid var(--sn-line-2); border-radius: var(--sn-radius-sm);
  padding: .45rem .7rem; font: inherit; font-size: .9rem;
}
.sn-search input::placeholder { color: var(--sn-muted-2); }
.sn-search button {
  background: var(--sn-paper); color: var(--sn-text);
  border: 1px solid var(--sn-line-2); border-radius: var(--sn-radius-sm);
  padding: .45rem .8rem; font: inherit; font-size: .88rem; font-weight: 600;
  cursor: pointer; transition: border-color .15s ease, color .15s ease;
}
.sn-search button:hover { border-color: var(--sn-accent); color: var(--sn-ink); }

/* ===== Hero ===== */
.sn-hero {
  background:
    radial-gradient(60% 120% at 80% 0%, rgba(124, 108, 255, .16), transparent 60%),
    linear-gradient(160deg, #1a2030 0%, #10141c 100%);
  border-bottom: 1px solid var(--sn-line);
  padding: 3rem 0 3.2rem;
}
.sn-hero-inner { max-width: 820px; }
.sn-hero-badge {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--sn-mono); font-size: .72rem; letter-spacing: .06em;
  color: #cdd8ff;
  background: rgba(255, 255, 255, .05);
  border: 1px solid var(--sn-line-2);
  padding: .35rem .85rem; border-radius: 999px; margin-bottom: 1.2rem;
}
.sn-hero-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--sn-accent-2);
  box-shadow: 0 0 0 0 rgba(56, 212, 192, .5);
  animation: sn-pulse 2.4s infinite;
}
@keyframes sn-pulse {
  0% { box-shadow: 0 0 0 0 rgba(56, 212, 192, .5); }
  70% { box-shadow: 0 0 0 9px rgba(56, 212, 192, 0); }
  100% { box-shadow: 0 0 0 0 rgba(56, 212, 192, 0); }
}
.sn-hero-title {
  font-size: clamp(2rem, 4.6vw, 3rem); font-weight: 800;
  line-height: 1.1; letter-spacing: -.015em; color: var(--sn-ink);
  margin-bottom: .9rem;
}
.sn-hero-sub {
  font-family: var(--sn-mono); font-size: .82rem; color: var(--sn-muted);
  margin-bottom: 1.1rem;
}
.sn-hero-note { font-size: .95rem; color: var(--sn-muted); max-width: 640px; line-height: 1.65; }
.sn-hero-status {
  font-family: var(--sn-mono); font-size: .74rem; color: var(--sn-muted-2);
  margin: -.3rem 0 1rem;
}

/* ===== Счётчики разделов ===== */
.sn-topics {
  display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.6rem;
}
.sn-topic {
  display: inline-flex; align-items: baseline; gap: .5rem;
  padding: .5rem .95rem; border-radius: 999px;
  border: 1px solid var(--sn-line-2); background: var(--sn-paper);
  color: var(--sn-text); text-decoration: none; font-size: .9rem; font-weight: 600;
  transition: border-color .15s ease, transform .15s ease;
}
.sn-topic:hover { border-color: var(--sn-accent); transform: translateY(-1px); }
.sn-topic b { font-family: var(--sn-mono); font-weight: 600; font-size: .78rem; color: var(--sn-accent-2); }

/* ===== Подборка ===== */
.sn-section { padding: 2.6rem 0 1.4rem; }
.sn-section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap; margin-bottom: 1.35rem;
  border-bottom: 1px solid var(--sn-line); padding-bottom: .7rem;
}
.sn-section-title {
  font-size: clamp(1.25rem, 2.4vw, 1.5rem); font-weight: 800;
  letter-spacing: -.01em; color: var(--sn-ink);
  display: flex; align-items: center; gap: .6rem;
}
.sn-section-title::before {
  content: ""; width: 8px; height: 8px; flex: none;
  background: var(--sn-accent); border-radius: 2px; transform: rotate(45deg);
}
.sn-section-link, .sn-updated { font-family: var(--sn-mono); font-size: .76rem; }
.sn-section-link { color: var(--sn-accent-2); text-decoration: none; font-weight: 600; }
.sn-section-link:hover { text-decoration: underline; }
.sn-updated { color: var(--sn-muted-2); }

.sn-featured { display: grid; grid-template-columns: 1.45fr 1fr; gap: 1.1rem; }
.sn-feat-stack { display: grid; gap: 1.1rem; }
.sn-feat {
  position: relative; display: flex; flex-direction: column; justify-content: flex-end;
  overflow: hidden; border-radius: var(--sn-radius); min-height: 240px;
  background: linear-gradient(150deg, #1a2030 0%, #10141c 100%);
  border: 1px solid var(--sn-line);
  text-decoration: none; color: var(--sn-ink);
  transition: transform .18s ease, border-color .18s ease;
}
.sn-feat:hover { transform: translateY(-3px); border-color: var(--sn-line-2); }
.sn-feat img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.sn-feat::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10, 13, 18, .05) 30%, rgba(10, 13, 18, .92) 100%);
}
.sn-feat-body { position: relative; z-index: 2; padding: 1.15rem 1.3rem; display: grid; gap: .45rem; }
.sn-feat-big { min-height: 440px; }
.sn-feat-big .sn-feat-title { font-size: clamp(1.25rem, 2.4vw, 1.7rem); }
.sn-feat-title { font-size: 1.05rem; font-weight: 700; line-height: 1.35; }

/* ===== Мета и чипы ===== */
.sn-chip {
  font-family: var(--sn-mono); font-size: .64rem; font-weight: 600;
  letter-spacing: .1em; text-transform: uppercase; color: var(--sn-accent-2);
  text-decoration: none; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sn-chip-static { color: #cdd8ff; }
.sn-date { font-family: var(--sn-mono); font-size: .72rem; color: var(--sn-muted-2); white-space: nowrap; }
.sn-src { color: var(--sn-muted); font-size: .8rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ===== Сетка карточек ===== */
.sn-grid {
  display: grid; gap: 1.1rem;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
}
.sn-card {
  background: var(--sn-paper); border: 1px solid var(--sn-line);
  border-radius: var(--sn-radius); overflow: hidden; height: 100%;
  transition: transform .16s ease, border-color .16s ease;
}
.sn-card:hover { transform: translateY(-3px); border-color: var(--sn-line-2); }
.sn-card-media { display: block; text-decoration: none; color: inherit; }
.sn-card-title-link { color: inherit; text-decoration: none; }
a.sn-card-title-link:hover { color: var(--sn-accent); }
a.sn-card-more { text-decoration: none; }
a.sn-card-more:hover { text-decoration: underline; }
.sn-media {
  position: relative; aspect-ratio: 16 / 9; overflow: hidden;
  background: var(--sn-dark);
}
.sn-media img { width: 100%; height: 100%; object-fit: cover; }
.sn-media.is-empty {
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 96 54'%3E%3Ccircle cx='30' cy='37' r='9' fill='none' stroke='%237c6cff' stroke-opacity='.5' stroke-width='3.5'/%3E%3Ccircle cx='66' cy='17' r='9' fill='none' stroke='%237c6cff' stroke-opacity='.5' stroke-width='3.5'/%3E%3Cpath d='M30 37 L66 17' stroke='%237c6cff' stroke-opacity='.35' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E") center / 46px auto no-repeat,
    repeating-linear-gradient(135deg, #12161e 0 10px, #0e1219 10px 20px);
}
.sn-card-body { display: flex; flex-direction: column; gap: .5rem; padding: 1rem 1.1rem 1.15rem; flex: 1; }
.sn-card-meta { display: flex; align-items: center; justify-content: space-between; gap: .7rem; min-width: 0; }
.sn-card-title { font-size: 1.04rem; font-weight: 700; line-height: 1.35; color: var(--sn-ink); }
.sn-card-sum { font-size: .88rem; line-height: 1.55; color: var(--sn-muted); }
.sn-card-more { margin-top: auto; padding-top: .35rem; font-size: .84rem; font-weight: 600; color: var(--sn-accent); }

/* ===== Поисковая выдача (строки) ===== */
.sn-rows { display: grid; }
.sn-row { padding: 1.05rem .2rem; border-bottom: 1px solid var(--sn-line); }
.sn-row-head { display: flex; align-items: baseline; justify-content: space-between; gap: .8rem; margin-bottom: .35rem; }
.sn-row a { text-decoration: none; }
.sn-row-title { font-size: 1.02rem; font-weight: 700; line-height: 1.35; color: var(--sn-ink); }
.sn-row a:hover .sn-row-title { color: var(--sn-accent); }
.sn-row-sum { font-size: .88rem; color: var(--sn-muted); line-height: 1.55; }

/* ===== Кнопки ===== */
.sn-cta { text-align: center; margin-top: 1.9rem; }
.sn-btn {
  display: inline-flex; align-items: center; gap: .45rem;
  background: var(--sn-accent); color: #fff; text-decoration: none;
  border: none; cursor: pointer;
  font-weight: 700; font-size: .93rem; font-family: inherit;
  padding: .72rem 1.35rem; border-radius: var(--sn-radius-sm);
  box-shadow: 0 8px 22px rgba(124, 108, 255, .3);
  transition: transform .15s ease, background .15s ease;
}
.sn-btn:hover { transform: translateY(-2px); background: var(--sn-accent-hover); }
.sn-btn-ghost {
  background: transparent; color: var(--sn-text);
  border: 1px solid var(--sn-line-2); box-shadow: none;
}
.sn-btn-ghost:hover { background: var(--sn-paper); }

/* ===== Пагинатор ===== */
.sn-pager { display: flex; flex-wrap: wrap; justify-content: center; gap: .35rem; margin: 2.2rem 0 .6rem; }
.sn-pg {
  min-width: 42px; height: 42px; padding: 0 .6rem;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--sn-line); border-radius: var(--sn-radius-sm);
  background: var(--sn-paper); color: var(--sn-text); text-decoration: none;
  font-weight: 600; font-size: .9rem;
  transition: border-color .14s ease, color .14s ease;
}
a.sn-pg:hover { border-color: var(--sn-accent); color: var(--sn-ink); }
.sn-pg.is-active { background: var(--sn-accent); border-color: var(--sn-accent); color: #fff; cursor: default; }
.sn-pg.is-gap, .sn-pg.is-disabled { color: var(--sn-muted-2); background: transparent; cursor: default; }
.sn-pager-info { text-align: center; font-family: var(--sn-mono); font-size: .74rem; color: var(--sn-muted-2); }

/* ===== Статья ===== */
.sn-article { max-width: 740px; margin: 0 auto; padding: 1.8rem 0 2.4rem; }
.sn-back {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .9rem; font-weight: 600; color: var(--sn-accent-2);
  text-decoration: none; margin-bottom: 1.3rem;
}
.sn-back:hover { text-decoration: underline; }
.sn-article-meta {
  display: flex; flex-wrap: wrap; align-items: center;
  gap: .5rem .9rem; margin-bottom: .8rem;
}
.sn-article-title {
  font-size: clamp(1.5rem, 3.4vw, 2.1rem); font-weight: 800;
  line-height: 1.2; letter-spacing: -.01em; color: var(--sn-ink); margin-bottom: 1.2rem;
}
.sn-article-hero {
  width: 100%; aspect-ratio: 16 / 9; object-fit: cover;
  border-radius: var(--sn-radius); border: 1px solid var(--sn-line);
  margin-bottom: 1.5rem; background: var(--sn-dark);
}
.sn-article-body p { font-size: 1.03rem; line-height: 1.75; margin-bottom: 1.05rem; }
.sn-note {
  background: #171d2a;
  border: 1px solid #2b3548; border-left: 3px solid var(--sn-accent);
  border-radius: var(--sn-radius-sm); padding: .85rem 1.1rem;
  color: #aeb9cb; font-size: .88rem; margin: 1.3rem 0;
}
.sn-article-actions { margin-top: 1.3rem; display: flex; gap: .8rem; flex-wrap: wrap; }

/* ===== Подвал ===== */
.sn-footer { background: var(--sn-dark); color: var(--sn-muted); margin-top: 3rem; }
.sn-footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1.4fr; gap: 2rem;
  padding: 2.5rem 0 1.7rem;
}
.sn-footer-brand { display: flex; align-items: center; gap: .6rem; margin-bottom: .85rem; }
.sn-footer-name { font-size: 1.12rem; font-weight: 800; color: var(--sn-ink); }
.sn-footer-about p, .sn-footer-col p { font-size: .86rem; line-height: 1.65; margin: 0; }
.sn-footer-col h6 {
  font-family: var(--sn-mono); font-size: .72rem; text-transform: uppercase;
  letter-spacing: .14em; color: var(--sn-muted); margin-bottom: .9rem; font-weight: 600;
}
.sn-footer-col a {
  display: block; color: var(--sn-muted); text-decoration: none;
  font-size: .89rem; margin-bottom: .5rem; transition: color .15s ease;
}
.sn-footer-col a:hover { color: var(--sn-ink); }
.sn-footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap; padding: .95rem 0 1.35rem;
  border-top: 1px solid var(--sn-line);
  font-size: .82rem; color: var(--sn-muted-2);
}
.sn-footer-note { font-family: var(--sn-mono); font-size: .72rem; }

/* ===== Состояния: загрузка, пусто, ошибка ===== */
.sn-status { text-align: center; color: var(--sn-muted); padding: 4rem 1rem; }
.sn-status p { margin-bottom: 1.1rem; }
.sn-status-title { color: var(--sn-ink); font-weight: 700; font-size: 1.05rem; }
.sn-sk { position: relative; overflow: hidden; background: #141926; border-radius: var(--sn-radius-sm); }
.sn-sk::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .05), transparent);
  animation: sn-sk 1.4s infinite;
}
@keyframes sn-sk {
  from { transform: translateX(-100%); }
  to { transform: translateX(100%); }
}
.sn-sk-hero { height: 230px; border-radius: var(--sn-radius); margin-bottom: 1.4rem; }
.sn-sk-card { height: 320px; border-radius: var(--sn-radius); }

/* ===== Адаптив ===== */
@media (max-width: 1000px) {
  .sn-featured { grid-template-columns: 1fr; }
  .sn-feat-big { min-height: 340px; }
  .sn-footer-grid { grid-template-columns: 1fr 1fr; }
  .sn-nav { margin-left: 0; }
}
@media (max-width: 680px) {
  .sn-wrap { width: min(1180px, 100% - 1.6rem); }
  .sn-topbar-in { gap: .8rem; }
  .sn-search { order: 3; width: 100%; }
  .sn-search input { flex: 1; width: auto; }
  .sn-hero { padding: 2.1rem 0 2.4rem; }
  .sn-feat-big { min-height: 280px; }
  .sn-footer-grid { grid-template-columns: 1fr; gap: 1.4rem; }
  .sn-article-body p { font-size: .98rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .sn-card, .sn-feat, .sn-topic, .sn-btn, .sn-hero-dot, .sn-sk::after {
    transition: none !important; animation: none !important;
  }
}