/* ============================================================
   Blog catalog — km design system
   Shared with article-redesign so the blog→article transition
   is visually seamless.
   ============================================================ */

:root {
  --km-bg: #06070f;
  --km-bg-2: #0a0c18;
  --km-surface: #11142a;
  --km-surface-2: #161a33;
  --km-surface-3: #1d2241;
  --km-border: rgba(255, 255, 255, 0.08);
  --km-border-strong: rgba(255, 255, 255, 0.14);
  --km-text: #f4f6ff;
  --km-text-2: #c4c9e0;
  --km-muted: #8b91b3;
  --km-faint: #5a607e;

  --km-blue: #2aabee;
  --km-blue-soft: rgba(42, 171, 238, 0.16);
  --km-violet: #8e6ff7;
  --km-violet-soft: rgba(142, 111, 247, 0.18);
  --km-green: #22c55e;
  --km-green-soft: rgba(34, 197, 94, 0.16);
  --km-amber: #f5b544;
  --km-amber-soft: rgba(245, 181, 68, 0.18);
  --km-red: #fb7185;
  --km-red-soft: rgba(251, 113, 133, 0.18);
  --km-pink: #f472b6;
  --km-pink-soft: rgba(244, 114, 182, 0.18);

  --km-radius-sm: 8px;
  --km-radius: 14px;
  --km-radius-lg: 22px;
  --km-radius-xl: 28px;

  --km-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.6);
  --km-shadow-lg: 0 32px 80px -28px rgba(0, 0, 0, 0.65);

  --km-content-w: 1200px;

  --km-font-display: "Manrope", "Inter", system-ui, -apple-system, sans-serif;
  --km-font-body: "Inter", system-ui, -apple-system, sans-serif;
  --km-font-mono: "JetBrains Mono", "SF Mono", ui-monospace, monospace;
}

.km-shell {
  max-width: var(--km-content-w);
  margin: 0 auto;
  padding: 0 32px;
}

/* =========================
   Hero
   ========================= */
.blog-hero {
  position: relative;
  padding: 56px 0 48px;
  background:
    radial-gradient(900px 460px at 78% 8%, rgba(42, 171, 238, 0.18), transparent 60%),
    radial-gradient(700px 420px at 8% 80%, rgba(142, 111, 247, 0.14), transparent 60%);
  overflow: hidden;
}
.blog-hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    radial-gradient(1px 1px at 12% 24%, rgba(255,255,255,0.5), transparent 60%),
    radial-gradient(1px 1px at 38% 56%, rgba(255,255,255,0.35), transparent 60%),
    radial-gradient(1.5px 1.5px at 62% 28%, rgba(255,255,255,0.5), transparent 60%),
    radial-gradient(1px 1px at 86% 64%, rgba(255,255,255,0.4), transparent 60%),
    radial-gradient(1px 1px at 24% 80%, rgba(255,255,255,0.35), transparent 60%);
  opacity: 0.55;
  pointer-events: none;
}

.km-crumbs {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 13px;
  color: var(--km-muted);
  margin-bottom: 22px;
  position: relative;
  z-index: 1;
}
.km-crumbs a { color: var(--km-muted); text-decoration: none; transition: color 0.18s; }
.km-crumbs a:hover { color: var(--km-text-2); }
.km-crumbs span.sep { color: var(--km-faint); }

.blog-hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
}
.blog-hero__badges span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 11px;
  border-radius: 999px;
  background: var(--km-blue-soft);
  border: 1px solid rgba(42, 171, 238, 0.36);
  color: #6cc7f3;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.blog-hero__badges span::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 999px;
  background: var(--km-blue);
  box-shadow: 0 0 0 4px rgba(42, 171, 238, 0.18);
}

.blog-hero h1 {
  font-family: var(--km-font-display);
  font-size: clamp(36px, 4.6vw, 60px);
  line-height: 1.04;
  letter-spacing: -0.025em;
  font-weight: 700;
  margin: 0 0 18px;
  color: var(--km-text);
  text-wrap: balance;
  position: relative;
  z-index: 1;
}
.blog-hero h1 b {
  background: linear-gradient(120deg, var(--km-blue) 0%, var(--km-violet) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
}
.blog-hero__lead {
  font-size: 18px;
  line-height: 1.6;
  color: var(--km-text-2);
  margin: 0;
  max-width: 620px;
  text-wrap: pretty;
  position: relative;
  z-index: 1;
}
.blog-hero__stats {
  margin-top: 32px;
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px solid var(--km-border);
  position: relative;
  z-index: 1;
}
.blog-hero__stats > div { display: flex; flex-direction: column; gap: 2px; }
.blog-hero__stats strong {
  font-family: var(--km-font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--km-text);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.blog-hero__stats span {
  font-size: 12px;
  color: var(--km-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}

/* =========================
   Filter bar
   ========================= */
.filters {
  padding: 8px 0 16px;
  border-bottom: 1px solid var(--km-border);
  background: rgba(6, 7, 15, 0.65);
  position: sticky;
  top: 68px;
  z-index: 20;
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
}
.filters__row {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 8px 0;
}
.filters__row::-webkit-scrollbar { display: none; }

.filter {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid var(--km-border);
  color: var(--km-text-2);
  font-family: var(--km-font-body);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.18s, color 0.18s, border-color 0.18s, transform 0.12s;
  white-space: nowrap;
}
.filter:hover { background: var(--km-surface-2); color: var(--km-text); border-color: var(--km-border-strong); }
.filter__emoji { font-size: 15px; line-height: 1; }
.filter__count {
  font-family: var(--km-font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--km-faint);
  padding: 1px 7px;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
}
.filter.is-active {
  background: var(--km-blue-soft);
  border-color: rgba(42, 171, 238, 0.36);
  color: var(--km-blue);
}
.filter.is-active .filter__count { color: var(--km-blue); background: rgba(42, 171, 238, 0.14); }

/* =========================
   Card grid
   ========================= */
.cards {
  padding: 40px 0 72px;
}
.cards__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

/* Featured card spans the whole row */
.card--featured { grid-column: 1 / -1; }

/* ---- Base card ---- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--km-radius-lg);
  background: var(--km-surface);
  border: 1px solid var(--km-border);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
  opacity: 0;
  transform: translateY(14px);
  animation: card-in 0.5s cubic-bezier(.2,.7,.2,1) forwards;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(42, 171, 238, 0.45);
  box-shadow:
    0 30px 60px -28px rgba(0,0,0,0.7),
    0 0 0 1px rgba(42, 171, 238, 0.15);
}
.card.is-hidden { display: none; }

/* Cascading entry delay */
.card:nth-child(1) { animation-delay: 0.00s; }
.card:nth-child(2) { animation-delay: 0.05s; }
.card:nth-child(3) { animation-delay: 0.10s; }
.card:nth-child(4) { animation-delay: 0.15s; }
.card:nth-child(5) { animation-delay: 0.20s; }
.card:nth-child(6) { animation-delay: 0.25s; }
.card:nth-child(7) { animation-delay: 0.30s; }
.card:nth-child(8) { animation-delay: 0.35s; }

@keyframes card-in {
  to { opacity: 1; transform: translateY(0); }
}

/* ---- Cover (gradient placeholder + icon) ---- */
.card__cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--km-surface-2);
}
.card__cover::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(900px 380px at 100% 0%, var(--cover-glow-2, rgba(142, 111, 247, 0.55)), transparent 55%),
    linear-gradient(135deg, var(--cover-from, #1a2148) 0%, var(--cover-to, #0d1024) 100%);
}
.card__cover::after {
  content: "";
  position: absolute; inset: 0;
  background-image: repeating-linear-gradient(
    135deg,
    rgba(255,255,255,0.04) 0 1px,
    transparent 1px 18px
  );
  opacity: 0.65;
}
.card__cover-icon {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 86px; height: 86px;
  display: grid;
  place-items: center;
  border-radius: 22px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  backdrop-filter: blur(10px);
  color: var(--km-text);
  font-size: 38px;
  z-index: 1;
  transition: transform 0.4s cubic-bezier(.2,.7,.2,1);
}
.card:hover .card__cover-icon { transform: translate(-50%, -50%) scale(1.06) rotate(-2deg); }

.card__cover-mono {
  position: absolute;
  bottom: 14px; left: 14px;
  font-family: var(--km-font-mono);
  font-size: 10.5px;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  z-index: 1;
}

/* Floating "Популярное" ribbon for the featured card */
.card__ribbon {
  position: absolute;
  top: 16px; right: 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 11px;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--km-blue), var(--km-violet));
  color: #fff;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  z-index: 2;
  box-shadow: 0 12px 28px -10px rgba(42, 171, 238, 0.6);
}
.card__ribbon i { font-size: 13px; }

/* ---- Card body ---- */
.card__body {
  padding: 22px 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.005em;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--km-border);
  color: var(--km-text-2);
}
.tag__emoji { font-size: 13px; }
.tag--stars { background: var(--km-blue-soft); border-color: rgba(42, 171, 238, 0.3); color: var(--km-blue); }
.tag--premium { background: var(--km-violet-soft); border-color: rgba(142, 111, 247, 0.3); color: var(--km-violet); }
.tag--howto { background: var(--km-amber-soft); border-color: rgba(245, 181, 68, 0.3); color: var(--km-amber); }
.tag--gift { background: var(--km-pink-soft); border-color: rgba(244, 114, 182, 0.3); color: var(--km-pink); }

.card__title {
  font-family: var(--km-font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--km-text);
  margin: 0;
  text-wrap: balance;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-clamp: 2;
  overflow: hidden;
}
.card__excerpt {
  font-size: 14px;
  line-height: 1.55;
  color: var(--km-text-2);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  line-clamp: 3;
  overflow: hidden;
  text-wrap: pretty;
}
.card__meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--km-border);
  font-size: 12.5px;
  color: var(--km-muted);
}
.card__meta span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.card__meta i { color: var(--km-faint); font-size: 14px; }
.card__meta .dot {
  width: 3px; height: 3px;
  border-radius: 999px;
  background: var(--km-faint);
}
.card__more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  color: var(--km-blue);
  font-weight: 600;
  font-size: 13px;
  transition: gap 0.2s ease;
}
.card:hover .card__more { gap: 8px; }
.card__more i { font-size: 14px; }

/* ---- Featured card layout ---- */
.card--featured {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 0;
}
.card--featured .card__cover { aspect-ratio: auto; height: 100%; min-height: 320px; }
.card--featured .card__cover-icon { width: 120px; height: 120px; font-size: 54px; border-radius: 28px; }
.card--featured .card__body { padding: 36px 40px; gap: 16px; }
.card--featured .card__title {
  font-size: 28px;
  -webkit-line-clamp: unset;
  line-clamp: unset;
}
.card--featured .card__excerpt {
  font-size: 15.5px;
  -webkit-line-clamp: unset;
  line-clamp: unset;
}

/* =========================
   Empty state
   ========================= */
.empty {
  display: none;
  text-align: center;
  padding: 64px 24px;
  border-radius: var(--km-radius-lg);
  background: var(--km-surface);
  border: 1px dashed var(--km-border-strong);
}
.empty.is-visible { display: block; }
.empty i {
  font-size: 36px;
  color: var(--km-muted);
  display: block;
  margin-bottom: 10px;
}
.empty h3 {
  font-family: var(--km-font-display);
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--km-text);
}
.empty p { font-size: 14px; color: var(--km-muted); margin: 0; }

/* =========================
   Responsive
   ========================= */
@media (max-width: 1199px) {
  .cards__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .card--featured { grid-column: 1 / -1; }
}

@media (max-width: 767px) {
  .km-shell { padding: 0 16px; }

  .blog-hero { padding: 36px 0 32px; }
  .blog-hero__stats { gap: 20px; margin-top: 24px; padding-top: 18px; }
  .blog-hero__stats strong { font-size: 18px; }

  .filters { top: 60px; }

  .cards { padding: 28px 0 56px; }
  .cards__grid { grid-template-columns: 1fr; gap: 18px; }

  .card--featured { grid-template-columns: 1fr; }
  .card--featured .card__cover { aspect-ratio: 16 / 9; min-height: 0; }
  .card--featured .card__cover-icon { width: 86px; height: 86px; font-size: 38px; border-radius: 22px; }
  .card--featured .card__body { padding: 22px 22px 20px; }
  .card--featured .card__title { font-size: 21px; -webkit-line-clamp: 2; line-clamp: 2; }
  .card--featured .card__excerpt { font-size: 14px; -webkit-line-clamp: 3; line-clamp: 3; }
}

@media (prefers-reduced-motion: reduce) {
  .card { opacity: 1; transform: none; animation: none; }
}