/* ============================================================
   НОВОСТИ ИИ — sci-fi portal styles
   Display: Russo One · UI/body: Exo 2 (both Cyrillic-capable)
   ============================================================ */
:root {
  /* sky / scene */
  --sky-1: #d6f4f4;
  --sky-2: #79cfd6;
  --sky-3: #2f8a99;
  --sky-4: #103c4b;
  --bg-page: #0b1620;
  --bg-panel: #0f1f29;
  --line: #21404c;

  /* accents */
  --accent: #2fe3e3;
  --accent-bright: #c4fbfb;
  --accent-deep: #0c7d82;
  --amber: #f3a23a;

  --text: #e9f7f8;
  --muted: #8db0b8;

  --maxw: 1240px;

  /* tweakable */
  --bright: 1;
  --hue: 0deg;
  --float: running;
  --px: 0px;
  --py: 0px;

  --font-display: "Russo One", system-ui, sans-serif;
  --font-ui: "Exo 2", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg-page);
  color: var(--text);
  font-family: var(--font-ui);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ============================================================
   HERO — sci-fi city receding to a central vanishing point
   ============================================================ */
.scene {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 620px;
  overflow: hidden;
  perspective: 820px;
  perspective-origin: 50% 41%;
  background:
    radial-gradient(58% 46% at 50% 41%, rgba(214,244,244,0.95) 0%, rgba(150,226,230,0.7) 20%, rgba(70,170,184,0.35) 42%, transparent 68%),
    linear-gradient(180deg, #2b8595 0%, #2f8a99 26%, #1c6173 50%, #0f4252 72%, #0b2330 100%);
  filter: brightness(var(--bright)) hue-rotate(var(--hue));
}

/* atmospheric light rays from the vanishing point */
.rays {
  position: absolute; left: 50%; top: 41%;
  width: 180vmax; height: 180vmax;
  transform: translate(-50%, -50%);
  background: conic-gradient(from 0deg,
    transparent 0deg, rgba(255,255,255,0.05) 4deg, transparent 9deg,
    transparent 26deg, rgba(255,255,255,0.04) 30deg, transparent 35deg,
    transparent 60deg, rgba(255,255,255,0.05) 64deg, transparent 70deg,
    transparent 110deg, rgba(255,255,255,0.04) 114deg, transparent 120deg,
    transparent 170deg, rgba(255,255,255,0.05) 174deg, transparent 180deg,
    transparent 210deg, rgba(255,255,255,0.04) 214deg, transparent 220deg,
    transparent 250deg, rgba(255,255,255,0.05) 254deg, transparent 260deg,
    transparent 300deg, rgba(255,255,255,0.04) 304deg, transparent 310deg,
    transparent 340deg, rgba(255,255,255,0.05) 344deg, transparent 350deg);
  -webkit-mask-image: radial-gradient(closest-side, #000 0%, transparent 62%);
          mask-image: radial-gradient(closest-side, #000 0%, transparent 62%);
  opacity: .5; pointer-events: none;
  animation: spin 120s linear infinite;
}
@keyframes spin { to { transform: translate(-50%,-50%) rotate(360deg); } }

/* distant real-photo skyline at the vanishing point (the city "to infinity") */
.skyline {
  position: absolute; left: 50%; top: 41%;
  transform: translate(-50%, -58%) translate(calc(var(--px) * -.12), calc(var(--py) * -.12));
  width: clamp(420px, 50vw, 820px); aspect-ratio: 1000 / 188;
  background: url("../assets/city.jpg") center top / 100% auto no-repeat;
  filter: brightness(1.5) saturate(1.25) contrast(1.02);
  -webkit-mask-image: radial-gradient(74% 120% at 50% 38%, #000 26%, transparent 78%);
          mask-image: radial-gradient(74% 120% at 50% 38%, #000 26%, transparent 78%);
  mix-blend-mode: screen;
  opacity: .9; pointer-events: none;
}
.vp-glow {
  position: absolute; left: 50%; top: 41%;
  transform: translate(-50%, -50%);
  width: clamp(280px, 34vw, 560px); height: clamp(150px, 18vw, 280px);
  background: radial-gradient(closest-side, rgba(196,251,251,0.72), rgba(47,227,227,0.28) 45%, transparent 72%);
  filter: blur(8px); opacity: .8; pointer-events: none;
}

/* perspective floor grid (the avenue) */
.floor {
  position: absolute; left: -60%; right: -60%; bottom: -2%;
  height: 66%;
  transform-origin: 50% 100%;
  transform: rotateX(81deg) translate(calc(var(--px) * -.2), 0);
  background:
    linear-gradient(180deg, rgba(8,28,36,0) 0%, rgba(9,32,42,0.6) 60%, rgba(8,26,34,0.9) 100%),
    repeating-linear-gradient(90deg, transparent 0 calc(3.2% - 1px), rgba(99,232,238,0.55) calc(3.2% - 1px) 3.2%),
    repeating-linear-gradient(0deg,  transparent 0 38px, rgba(99,232,238,0.30) 38px 40px);
  -webkit-mask-image: linear-gradient(to top, #000 8%, rgba(0,0,0,.85) 40%, transparent 86%);
          mask-image: linear-gradient(to top, #000 8%, rgba(0,0,0,.85) 40%, transparent 86%);
  pointer-events: none;
}
/* the bright central avenue line */
.avenue {
  position: absolute; left: 50%; top: 41%; bottom: 0;
  width: 3px; transform: translateX(-50%);
  background: linear-gradient(180deg, rgba(243,162,58,0) 0%, rgba(243,162,58,.55) 30%, rgba(255,205,130,.9) 100%);
  filter: blur(.4px);
  box-shadow: 0 0 14px rgba(243,162,58,.6);
  pointer-events: none;
}

/* the city — buildings injected by JS into these wrappers */
.city { position: absolute; inset: 0; pointer-events: none; }
.building {
  position: absolute;
  border-radius: 2px 2px 0 0;
  box-shadow: 0 0 0 1px rgba(99,232,238,.18), 0 0 22px rgba(47,227,227,.12);
  will-change: transform;
}
.building::after {
  /* avenue-facing neon edge accent */
  content: ""; position: absolute; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(180deg, var(--accent-bright), var(--accent) 60%, transparent);
  filter: blur(.3px); opacity: .8;
}
.building.left::after  { right: 0; }
.building.right::after { left: 0; }
.building .roof {
  position: absolute; top: -5px; left: 50%; transform: translateX(-50%);
  width: 3px; height: 6px; background: var(--accent-bright);
  box-shadow: 0 0 8px var(--accent); border-radius: 2px;
}

.scanline {
  position: absolute; left: 0; right: 0; top: 41%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(196,251,251,.6), transparent);
  opacity: .55; pointer-events: none;
}
.grain {
  position: absolute; inset: 0; pointer-events: none; opacity: .045; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- floating brand monogram ---- */
.brand {
  position: absolute; left: 50%; top: 39%; z-index: 8;
  transform: translate(-50%, -50%) translate(calc(var(--px) * .3), calc(var(--py) * .3));
  text-align: center; width: 92%; pointer-events: none;
}
.brand::before {
  content: ""; position: absolute; left: 50%; top: 56%; transform: translate(-50%,-50%);
  width: 150%; height: 340%;
  background: radial-gradient(closest-side, rgba(5,20,28,.62), rgba(5,20,28,.22) 55%, transparent 72%);
  filter: blur(8px); z-index: -1;
}
.brand-float { animation: floaty 6.5s ease-in-out infinite; animation-play-state: var(--float); }
.monogram {
  font-family: var(--font-display);
  font-size: clamp(76px, 16vw, 240px);
  line-height: .9; letter-spacing: .01em;
  display: inline-block; white-space: nowrap;
  color: #eafdfd;
  text-shadow: 0 6px 40px rgba(3,16,22,.6);
}
.monogram .ai {
  background: url("../assets/city.jpg") center 38% / 220% auto;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 10px var(--accent)) drop-shadow(0 0 36px rgba(47,227,227,.7)) brightness(1.35) saturate(1.4);
}
.monogram .ya {
  display: inline-block;
  color: #eafdfd;
  text-shadow: 0 0 10px var(--accent), 0 0 40px rgba(47,227,227,.6), 0 6px 40px rgba(3,16,22,.6);
}
.wordmark {
  margin-top: clamp(8px, 1.6vh, 22px);
  font-family: var(--font-display);
  font-size: clamp(20px, 3.4vw, 50px);
  letter-spacing: clamp(6px, 1.4vw, 20px);
  color: #f2feff;
  text-shadow: 0 0 22px rgba(47,227,227,.45), 0 4px 18px rgba(3,16,22,.5);
  padding-left: clamp(6px, 1.4vw, 20px);
}
.tagline {
  margin-top: clamp(14px, 2.4vh, 28px);
  display: inline-block;
  font-family: var(--font-ui); font-weight: 600;
  font-size: clamp(11px, 1.25vw, 15px); letter-spacing: 5px;
  color: #ffffff; text-transform: uppercase;
  padding: 7px 18px; border-radius: 999px;
  background: rgba(4,16,23,.5);
  border: 1px solid rgba(196,251,251,.18);
  backdrop-filter: blur(3px);
  text-shadow: 0 0 10px rgba(5,20,28,.9);
}
.tagline b { color: var(--accent-bright); font-weight: 700; }

@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-15px); } }

.scroll-hint {
  position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%);
  z-index: 9; display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--accent-bright); font-family: var(--font-ui); font-size: 11px; letter-spacing: 4px;
  text-shadow: 0 0 12px rgba(47,227,227,.6);
}
.scroll-hint .mouse { width: 22px; height: 36px; border: 1.5px solid var(--accent-bright); border-radius: 12px; position: relative; }
.scroll-hint .mouse::after {
  content: ""; position: absolute; left: 50%; top: 7px; width: 3px; height: 7px; border-radius: 2px;
  background: var(--accent-bright); transform: translateX(-50%); animation: wheel 1.8s ease-in-out infinite;
}
@keyframes wheel { 0%{opacity:0;transform:translate(-50%,0)} 30%{opacity:1} 70%{opacity:1} 100%{opacity:0;transform:translate(-50%,11px)} }

/* ============================================================
   NAV — sticky under hero
   ============================================================ */
.nav {
  position: sticky; top: 0; z-index: 40;
  background: linear-gradient(180deg, rgba(10,26,34,.97), rgba(9,22,29,.94));
  border-top: 1px solid rgba(47,227,227,.35);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  box-shadow: 0 6px 24px rgba(0,0,0,.4), 0 0 0 1px rgba(47,227,227,.05) inset;
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto;
  display: flex; align-items: stretch; gap: 2px;
  padding: 0 16px; min-height: 56px;
}
.nav-brand {
  display: flex; align-items: center; gap: 8px; padding-right: 18px; margin-right: 6px;
  font-family: var(--font-display); font-size: 17px; letter-spacing: .5px; white-space: nowrap;
  border-right: 1px solid var(--line);
}
.nav-brand .ai { color: var(--accent); text-shadow: 0 0 10px rgba(47,227,227,.6); }
.nav-list { display: flex; align-items: stretch; flex: 1; gap: 2px; }
.nav-item {
  display: flex; align-items: center; gap: 6px; padding: 0 15px;
  font-size: 14px; font-weight: 500; letter-spacing: .3px; white-space: nowrap;
  color: var(--text); opacity: .82; position: relative; cursor: pointer;
  transition: opacity .18s, color .18s, background .18s;
}
.nav-item .caret { width: 8px; height: 8px; opacity: .6; }
.nav-item:hover { opacity: 1; color: var(--accent-bright); background: rgba(47,227,227,.06); }
.nav-item.active { opacity: 1; color: var(--accent-bright); }
.nav-item.active::after {
  content: ""; position: absolute; left: 12px; right: 12px; bottom: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  box-shadow: 0 0 10px var(--accent);
}
.nav-search {
  display: flex; align-items: center; padding: 0 6px 0 16px; margin-left: auto;
  border-left: 1px solid var(--line);
}
.nav-search button {
  width: 40px; height: 40px; border-radius: 8px; border: 1px solid var(--line);
  background: rgba(47,227,227,.05); color: var(--accent-bright); cursor: pointer;
  display: grid; place-items: center; transition: box-shadow .2s, background .2s;
}
.nav-search button:hover { background: rgba(47,227,227,.14); box-shadow: 0 0 16px rgba(47,227,227,.4); }
@media (max-width: 1080px) { .nav-item { padding: 0 10px; font-size: 13px; } }
@media (max-width: 860px) {
  .nav-list { overflow-x: auto; scrollbar-width: none; }
  .nav-list::-webkit-scrollbar { display: none; }
}

/* ============================================================
   FEED
   ============================================================ */
.feed-wrap { max-width: var(--maxw); margin: 0 auto; padding: 40px 16px 24px; }
.section-head {
  display: flex; align-items: center; gap: 16px; margin: 0 0 26px;
}
.section-head h2 {
  margin: 0; font-family: var(--font-display); font-size: 20px; letter-spacing: 1px;
  color: var(--text); display: flex; align-items: center; gap: 10px;
}
.section-head h2::before {
  content: ""; width: 10px; height: 22px; background: var(--accent);
  box-shadow: 0 0 14px var(--accent); border-radius: 2px;
}
.section-head .rule { flex: 1; height: 1px; background: linear-gradient(90deg, var(--line), transparent); }

.grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
@media (max-width: 900px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid { grid-template-columns: 1fr; } }

/* ---- featured lead block ---- */
.featured { display: grid; grid-template-columns: 2fr 1fr; gap: 22px; }
@media (max-width: 820px) { .featured { grid-template-columns: 1fr; } }

.feat-lead {
  position: relative; display: grid; grid-template-rows: auto;
  background: var(--bg-panel); border: 1px solid var(--line); border-radius: 14px;
  overflow: hidden; cursor: pointer;
  transition: transform .22s, border-color .22s, box-shadow .22s;
}
.feat-lead:hover { transform: translateY(-4px); border-color: rgba(47,227,227,.55); box-shadow: 0 18px 40px rgba(0,0,0,.5), 0 0 0 1px rgba(47,227,227,.25); }
.feat-lead-thumb {
  position: relative; aspect-ratio: 16 / 8; background-size: cover; background-position: center;
}
.feat-lead-thumb::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(11,22,32,.7) 100%),
              repeating-linear-gradient(0deg, transparent 0 3px, rgba(0,0,0,.06) 3px 4px);
}
.feat-lead-body { padding: 20px 24px 24px; }
.feat-lead-title {
  margin: 4px 0 10px; font-family: "Russo One", sans-serif; font-weight: 400;
  font-size: clamp(20px, 2.2vw, 28px); line-height: 1.18; color: var(--text); text-wrap: pretty;
  transition: color .18s;
}
.feat-lead:hover .feat-lead-title { color: var(--accent-bright); }
.feat-lead-excerpt { margin: 0 0 16px; font-size: 15px; line-height: 1.55; color: var(--muted); text-wrap: pretty; }
.feat-more { font-weight: 700; letter-spacing: 1px; font-size: 13px; color: var(--accent-bright); }

.feat-side { display: flex; flex-direction: column; gap: 16px; }
.feat-side-item {
  display: flex; gap: 14px; align-items: stretch; cursor: pointer;
  background: var(--bg-panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden;
  transition: transform .2s, border-color .2s, box-shadow .2s; flex: 1;
}
.feat-side-item:hover { transform: translateX(3px); border-color: rgba(47,227,227,.5); box-shadow: 0 10px 26px rgba(0,0,0,.4); }
.feat-side-thumb {
  position: relative; width: 42%; flex: none; background-size: cover; background-position: center; min-height: 104px;
}
.feat-side-title {
  display: flex; align-items: center; padding: 12px 14px 12px 2px;
  font-size: 15px; line-height: 1.34; font-weight: 600; color: var(--text); text-wrap: pretty;
  transition: color .18s;
}
.feat-side-item:hover .feat-side-title { color: var(--accent-bright); }
.chip.sm {
  position: absolute; top: 8px; left: 8px; font-size: 9.5px; padding: 3px 7px;
  border-radius: 4px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: #04222a;
}

.card {
  background: var(--bg-panel); border: 1px solid var(--line); border-radius: 12px;
  overflow: hidden; position: relative; cursor: pointer;
  opacity: 1;
  transition: transform .22s, border-color .22s, box-shadow .22s;
}
.card:hover { transform: translateY(-4px); border-color: rgba(47,227,227,.55); box-shadow: 0 14px 34px rgba(0,0,0,.45), 0 0 0 1px rgba(47,227,227,.25); }
.card-thumb {
  position: relative; aspect-ratio: 16 / 10; overflow: hidden;
  background-size: cover; background-position: center;
}
.card-thumb::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(11,22,32,.55) 100%),
              repeating-linear-gradient(0deg, transparent 0 3px, rgba(0,0,0,.06) 3px 4px);
}
.card-thumb .chip {
  position: absolute; top: 10px; left: 10px; z-index: 2; white-space: nowrap;
  font-size: 10.5px; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase;
  padding: 4px 9px; border-radius: 5px; color: #04222a;
  background: var(--accent); box-shadow: 0 0 14px rgba(47,227,227,.5);
}
.card-thumb .glyph {
  position: absolute; right: 12px; bottom: 12px; z-index: 2; opacity: .85;
  color: var(--accent-bright); filter: drop-shadow(0 0 8px rgba(47,227,227,.6));
}
.card-body { padding: 14px 15px 16px; }
.card-meta { display: flex; gap: 10px; align-items: center; font-size: 11px; color: var(--muted); margin-bottom: 8px; letter-spacing: .4px; white-space: nowrap; }
.card-meta .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--accent); }
.card-title {
  font-size: 16px; line-height: 1.32; font-weight: 600; color: var(--text);
  text-wrap: pretty; transition: color .18s;
}
.card:hover .card-title { color: var(--accent-bright); }

/* infinite-scroll loader / end */
.loader { display: flex; flex-direction: column; align-items: center; gap: 14px; padding: 40px 0 8px; }
.loader .ring {
  width: 34px; height: 34px; border-radius: 50%;
  border: 2px solid rgba(47,227,227,.2); border-top-color: var(--accent);
  animation: spin 0.9s linear infinite;
}
.loader .label { font-size: 12px; letter-spacing: 3px; color: var(--muted); text-transform: uppercase; }
.feed-end { text-align: center; padding: 36px 0; color: var(--muted); }
.feed-end .line { font-family: var(--font-display); letter-spacing: 3px; color: var(--accent-bright); margin-bottom: 14px; }
.btn-top {
  font-family: var(--font-ui); font-weight: 600; letter-spacing: 1px; font-size: 13px;
  padding: 10px 22px; border-radius: 8px; cursor: pointer;
  background: rgba(47,227,227,.08); border: 1px solid rgba(47,227,227,.4); color: var(--accent-bright);
  transition: background .2s, box-shadow .2s;
}
.btn-top:hover { background: rgba(47,227,227,.18); box-shadow: 0 0 18px rgba(47,227,227,.4); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  margin-top: 40px;
  background:
    radial-gradient(120% 80% at 50% 0%, rgba(47,227,227,.06), transparent 60%),
    linear-gradient(180deg, #0c1c26, #081218);
  border-top: 1px solid rgba(47,227,227,.3);
}
.footer-grid {
  max-width: var(--maxw); margin: 0 auto; padding: 48px 16px 30px;
  display: grid; grid-template-columns: 1fr 1.15fr 1.15fr; gap: 40px;
}
@media (max-width: 880px) { .footer-grid { grid-template-columns: 1fr; gap: 34px; } }
.fcol h3 {
  margin: 0 0 18px; font-family: var(--font-display); font-size: 15px; letter-spacing: .8px;
  display: flex; align-items: center; gap: 12px; color: var(--text);
}
.fcol h3 .rule { flex: 1; height: 1px; background: linear-gradient(90deg, var(--line), transparent); }

.cat-list { display: flex; flex-direction: column; gap: 2px; }
.cat-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 11px 4px; border-bottom: 1px dashed rgba(33,64,76,.7);
  font-size: 14px; color: var(--text); opacity: .9; cursor: pointer; transition: color .18s, padding .18s;
}
.cat-row:hover { color: var(--accent-bright); padding-left: 8px; }
.cat-count {
  font-size: 12px; font-weight: 700; min-width: 34px; text-align: center;
  padding: 2px 8px; border-radius: 5px; color: #04222a; background: var(--accent);
  box-shadow: 0 0 12px rgba(47,227,227,.4);
}

.mini-list { display: flex; flex-direction: column; gap: 14px; }
.mini {
  display: flex; gap: 12px; align-items: center; cursor: pointer; group: 1;
}
.mini-thumb {
  width: 64px; height: 48px; flex: none; border-radius: 7px; border: 1px solid var(--line);
  background-size: cover; background-position: center; position: relative; overflow: hidden;
}
.mini-thumb::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent, rgba(8,18,24,.3)); }
.mini-title { font-size: 13.5px; line-height: 1.35; color: var(--text); opacity: .9; transition: color .18s; }
.mini:hover .mini-title { color: var(--accent-bright); }

.footer-bottom {
  border-top: 1px solid var(--line);
  background: #070f14;
}
.footer-bottom-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 22px 16px;
  display: flex; flex-wrap: wrap; gap: 18px 30px; align-items: flex-start; justify-content: space-between;
}
.fb-left { display: flex; flex-direction: column; gap: 12px; }
.fb-links { display: flex; gap: 22px; font-size: 13px; letter-spacing: .5px; }
.fb-links a { color: var(--accent-bright); opacity: .85; transition: opacity .18s; }
.fb-links a:hover { opacity: 1; text-shadow: 0 0 10px rgba(47,227,227,.5); }
.fb-copy { font-size: 12.5px; color: var(--muted); }
.fb-disclaimer { max-width: 560px; font-size: 12px; line-height: 1.6; color: #5f8088; text-align: right; }
@media (max-width: 760px) { .fb-disclaimer { text-align: left; } }

@media (prefers-reduced-motion: reduce) {
  .rays, .brand-float, .scroll-hint .mouse::after, .card, .loader .ring { animation: none !important; }
}