/* ================================================================
   DataHints DS — Article Hero v2  (DRAFT)
   Magazine-editorial direction: generous space, format-driven
   gradients, two-zone meta, two-row tags (Skills / Technologies).

   Two background modes:
     Default  — format-specific radial gradient (no image needed)
     --bg-image — full-bleed image via --ah2-cover CSS variable:
       style="--ah2-cover: url('cover.jpg')"

   Requires: tokens.css, badges.css

   Classes:
     .dh-ah2                   wrapper (+ data-format="guide|tip|video|stream|news|memo|lesson")
     .dh-ah2--bg-image         full-bleed image mode
     .ah2-inner                centered column
     .ah2-eyebrow              breadcrumb nav (ol)
     .ah2-eyebrow-sep          › separator span
     .ah2-label                format badge row
     .ah2-status               stream status pill  (.is-live/.is-upcoming/.is-recorded)
     .ah2-heading              h1
     .ah2-lead                 lead paragraph
     .ah2-divider              thin separator before meta
     .ah2-meta                 two-column grid: author + stats
     .ah2-author               author cluster (avatar + body)
     .ah2-avatar               40px circle
     .ah2-avatar-init          initials fallback inside avatar
     .ah2-author-name          name text
     .ah2-author-date          published / updated date line
     .ah2-stats                reading-time + views cluster
     .ah2-stat                 single stat item (icon + text)
     .ah2-tags                 tag rows wrapper
     .ah2-tag-group            one row (skill or tech)
     .ah2-tag-label            "Навыки" / "Технологии" prefix
     .ah2-tag-skill            skill chip — accent-tinted, filled
     .ah2-tag-tech             technology chip — outline, neutral
     .ah2-cover                cover image panel (below text)
     .ah2-cover-img            <img> inside cover
     .ah2-cover-caption        optional caption
     .ah2-video                video embed panel (below text)
     .ah2-video-wrap           16:9 iframe container
     .ah2-event-bar            webinar date/register strip (above video)
     .ah2-event-date           date cluster inside event-bar
   ================================================================ */

/* ── Base wrapper ─────────────────────────────────────────────── */
.dh-ah2 {
  position: relative;
  overflow: hidden;
  background: var(--bg);
}

/* ── Accent bar — top edge, format-driven colour ──────────────── */
.dh-ah2::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  z-index: 10;
  background: var(--grad-fx); /* fallback — overridden per format below */
}
.dh-ah2[data-format="guide"]::before  { background: var(--grad-fx); }
.dh-ah2[data-format="tip"]::before    { background: linear-gradient(90deg, var(--insight), var(--accent)); }
.dh-ah2[data-format="video"]::before,
.dh-ah2[data-format="stream"]::before { background: linear-gradient(90deg, var(--fx), var(--accent)); }
.dh-ah2[data-format="memo"]::before                          { background: linear-gradient(90deg, var(--mint), var(--insight)); }
.dh-ah2[data-format="memo"][data-accent="primary"]::before  { background: linear-gradient(90deg, var(--accent), var(--insight)); }
.dh-ah2[data-format="memo"][data-accent="fx"]::before       { background: linear-gradient(90deg, var(--fx), var(--insight)); }
.dh-ah2[data-format="memo"][data-accent="insight"]::before  { background: var(--insight); }
.dh-ah2[data-format="memo"][data-accent="amber"]::before    { background: linear-gradient(90deg, var(--micro-amber), var(--insight)); }
.dh-ah2[data-format="memo"][data-accent="coral"]::before    { background: linear-gradient(90deg, var(--micro-coral), var(--insight)); }
.dh-ah2[data-format="lesson"]::before { background: linear-gradient(90deg, var(--accent), var(--fx)); }
.dh-ah2[data-format="news"]::before   { background: var(--border-s); }

/* ── Format-specific gradient backgrounds (no-image mode) ─────── */
/* Plain bg fallback first; then image overlay */
.dh-ah2[data-format="guide"] {
  background-color: var(--bg);
  background-image: radial-gradient(
    ellipse 80% 55% at 96% -5%,
    var(--accent-sub),
    transparent 65%
  );
}
.dh-ah2[data-format="tip"] {
  background-color: var(--bg);
  background-image: radial-gradient(
    ellipse 80% 55% at 96% -5%,
    var(--insight-sub),
    transparent 65%
  );
}
.dh-ah2[data-format="video"],
.dh-ah2[data-format="stream"] {
  background-color: var(--bg);
  background-image: radial-gradient(
    ellipse 80% 55% at 96% -5%,
    var(--fx-sub),
    transparent 65%
  );
}
.dh-ah2[data-format="memo"] {
  background-color: var(--bg);
  background-image: radial-gradient(
    ellipse 80% 55% at 96% -5%,
    var(--mint-sub),
    transparent 65%
  );
}
.dh-ah2[data-format="lesson"] {
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 80% 55% at 96% -5%, var(--accent-sub), transparent 65%),
    radial-gradient(ellipse 50% 40% at 5% 100%,  var(--fx-sub),    transparent 70%);
}
.dh-ah2[data-format="news"] {
  background-color: var(--bg);
  background-image: none;
}

/* ── Background-image mode ────────────────────────────────────── */
/* Usage: add class + set --ah2-cover: url('cover.jpg') inline    */
/* The ::after overlay fades image → solid bg from top to bottom  */
.dh-ah2.dh-ah2--bg-image {
  background-color: var(--bg);
  background-image: var(--ah2-cover, none);
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
}
.dh-ah2.dh-ah2--bg-image::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  /* Fallback for browsers without color-mix */
  background: linear-gradient(to bottom, rgba(0,0,0,0.45) 0%, var(--bg) 75%);
  /* Preferred gradient: image visible at top, solid bg at bottom  */
  background: linear-gradient(
    to bottom,
    color-mix(in srgb, var(--bg) 40%, transparent)  0%,
    color-mix(in srgb, var(--bg) 65%, transparent) 35%,
    color-mix(in srgb, var(--bg) 88%, transparent) 65%,
    var(--bg) 82%
  );
}

/* ── bg-image mode: force eyebrow + badge text to near-white ───── */
/* fg-3 reads fine on card/gradient bg but disappears over photos  */
.dh-ah2.dh-ah2--bg-image .ah2-eyebrow,
.dh-ah2.dh-ah2--bg-image .ah2-eyebrow a {
  color: rgba(255, 255, 255, 0.72);
}
.dh-ah2.dh-ah2--bg-image .ah2-eyebrow a:hover {
  color: #fff;
}
.dh-ah2.dh-ah2--bg-image .ah2-eyebrow-sep {
  opacity: 0.45;
}
/* Format badge label text (icon + word like "ПАМЯТКА") */
.dh-ah2.dh-ah2--bg-image .ah2-label .dh-badge-pill,
.dh-ah2.dh-ah2--bg-image .ah2-label [class*="dh-badge"] {
  color: rgba(255, 255, 255, 0.85);
}

/* ── Inner container ──────────────────────────────────────────── */
.ah2-inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-w-narrow);
  margin: 0 auto;
  padding: var(--sp-24) var(--sp-6) var(--sp-12);
}

/* ── Eyebrow / breadcrumb nav ─────────────────────────────────── */
.ah2-eyebrow {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-3);
  margin-bottom: var(--sp-6);
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
}
.ah2-eyebrow a {
  color: var(--fg-3);
  text-decoration: none;
  transition: color var(--ease-fast);
}
.ah2-eyebrow a:hover { color: var(--accent-text); }
.ah2-eyebrow a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}
.ah2-eyebrow-sep { opacity: 0.35; }

/* ── Format badge row ─────────────────────────────────────────── */
.ah2-label {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-6);
  flex-wrap: wrap;
}

/* ── Stream/webinar status pill ───────────────────────────────── */
.ah2-status {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  padding: 3px var(--sp-3);
  border-radius: var(--r-pill);
  line-height: 1.6;
}
.ah2-status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}
.ah2-status.is-live {
  background: var(--micro-coral-sub);
  color: var(--micro-coral-text);
}
.ah2-status.is-live::before {
  background: var(--micro-coral);
  animation: ah2-pulse 1.5s ease-in-out infinite;
}
.ah2-status.is-upcoming {
  background: var(--micro-amber-sub);
  color: var(--micro-amber-text);
}
.ah2-status.is-upcoming::before { background: var(--micro-amber); }
.ah2-status.is-recorded {
  background: var(--bg-elevated);
  color: var(--fg-3);
  border: 1px solid var(--border-s);
}
.ah2-status.is-recorded::before { background: var(--fg-3); opacity: 0.5; }

@keyframes ah2-pulse {
  0%, 100% { opacity: 1;   transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.65); }
}
@media (prefers-reduced-motion: reduce) {
  .ah2-status.is-live::before { animation: none; }
}

/* ── Heading — editorial scale ────────────────────────────────── */
.ah2-heading {
  font-size: clamp(2rem, 5.5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--fg-heading);
  margin: 0 0 var(--sp-6);
}

/* Compact heading for short-form formats */
.dh-ah2[data-format="tip"]  .ah2-heading,
.dh-ah2[data-format="news"] .ah2-heading,
.dh-ah2[data-format="memo"] .ah2-heading {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  letter-spacing: -0.02em;
}

/* ── Lead paragraph ───────────────────────────────────────────── */
.ah2-lead {
  font-size: clamp(1.0625rem, 2vw, 1.1875rem);
  line-height: 1.7;
  color: var(--fg-2);
  margin: 0 0 var(--sp-10);
}

/* ── Divider before meta ──────────────────────────────────────── */
.ah2-divider {
  height: 1px;
  background: var(--border-s);
  margin-bottom: var(--sp-6);
  border: none;
}

/* ── Meta zone — two-column: author left, stats right ─────────── */
.ah2-meta {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: var(--sp-4) var(--sp-8);
  margin-bottom: var(--sp-6);
}

/* Author cluster */
.ah2-author {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}
.ah2-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent-sub);
  border: 1.5px solid var(--border-a);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}
.ah2-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.ah2-avatar-init {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-text);
  letter-spacing: 0.02em;
  user-select: none;
}
.ah2-author-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--fg);
  line-height: 1.3;
}
.ah2-author-date {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--fg-3);
  margin-top: 2px;
  line-height: 1.5;
}
.ah2-author-updated {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--fg-3);
  opacity: 0.6;
}

/* Stats cluster — reading time + views */
.ah2-stats {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--sp-2);
}
.ah2-stat {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--fg-3);
  white-space: nowrap;
}
.ah2-stat svg {
  width: 12px;
  height: 12px;
  opacity: 0.6;
  flex-shrink: 0;
}

/* ── Tags zone — two rows ─────────────────────────────────────── */
.ah2-tags {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}
.ah2-tag-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-2);
}
.ah2-tag-label {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--fg-3);
  opacity: 0.55;
  white-space: nowrap;
  min-width: 72px; /* align labels in both rows */
  flex-shrink: 0;
}

/* Skill chip — accent fill, interactive */
.ah2-tag-skill {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 var(--sp-3);
  background: var(--accent-sub);
  border: 1px solid var(--border-a);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.04em;
  color: var(--accent-text);
  text-decoration: none;
  cursor: pointer;
  transition: background var(--ease-fast), border-color var(--ease-fast), color var(--ease-fast);
}
.ah2-tag-skill:hover {
  background: var(--accent-fill);
  border-color: var(--accent);
  color: var(--on-accent);
}
.ah2-tag-skill:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Tech chip — outline, neutral */
.ah2-tag-tech {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 var(--sp-3);
  background: transparent;
  border: 1px solid var(--border-s);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.04em;
  color: var(--fg-3);
  text-decoration: none;
  cursor: pointer;
  transition: color var(--ease-fast), border-color var(--ease-fast), background var(--ease-fast);
}
.ah2-tag-tech:hover {
  color: var(--fg);
  border-color: var(--fg-3);
  background: var(--bg-elevated);
}
.ah2-tag-tech:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ═══════════════════════════════════════════════════════════════
   FORMAT VARIANTS — compact + left-bar signals
   ════════════════════════════════════════════════════════════ */

.dh-ah2[data-format="tip"] .ah2-inner,
.dh-ah2[data-format="news"] .ah2-inner,
.dh-ah2[data-format="memo"] .ah2-inner {
  padding-top: var(--sp-16);
  padding-bottom: var(--sp-10);
}

.dh-ah2[data-format="tip"] .ah2-inner {
  padding-left: calc(var(--sp-6) + 3px);
  border-left: 3px solid var(--insight);
}
.dh-ah2[data-format="memo"] .ah2-inner {
  padding-left: calc(var(--sp-6) + 3px);
  border-left: 3px solid var(--mint);
}
.dh-ah2[data-format="memo"][data-accent="primary"] .ah2-inner { border-left-color: var(--accent); }
.dh-ah2[data-format="memo"][data-accent="fx"]      .ah2-inner { border-left-color: var(--fx); }
.dh-ah2[data-format="memo"][data-accent="insight"] .ah2-inner { border-left-color: var(--insight); }
.dh-ah2[data-format="memo"][data-accent="amber"]   .ah2-inner { border-left-color: var(--micro-amber); }
.dh-ah2[data-format="memo"][data-accent="coral"]   .ah2-inner { border-left-color: var(--micro-coral); }

/* ═══════════════════════════════════════════════════════════════
   COVER IMAGE — panel below text (alternative to bg-image)
   ════════════════════════════════════════════════════════════ */
.ah2-cover {
  position: relative;
  z-index: 2;
  width: 100%;
}
.ah2-cover-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 540px;
  object-fit: cover;
}
.ah2-cover-caption {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--fg-3);
  text-align: center;
  padding: var(--sp-3) var(--sp-6);
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
}

/* ═══════════════════════════════════════════════════════════════
   VIDEO / WEBINAR embed panel — contained, flush to bottom
   ════════════════════════════════════════════════════════════ */
.ah2-video {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: var(--sp-10) auto 0;
  padding: 0 var(--sp-6);
}
.ah2-event-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-5);
  background: var(--bg-elevated);
  border: 1px solid var(--border-s);
  border-bottom: none;
  border-radius: var(--r-lg) var(--r-lg) 0 0;
}
.ah2-event-date {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--fg-2);
}
.ah2-event-date svg {
  width: 14px;
  height: 14px;
  color: var(--accent-text);
  flex-shrink: 0;
}
.ah2-video-wrap {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  background: var(--bg-card);
  border: 1px solid var(--border-s);
  border-bottom: none;
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  overflow: hidden;
}
/* When event-bar precedes, video-wrap loses its top radius */
.ah2-event-bar + .ah2-video-wrap {
  border-top: none;
  border-radius: 0;
}
.ah2-video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  .ah2-inner {
    padding: var(--sp-16) var(--sp-5) var(--sp-10);
  }
  .ah2-meta {
    grid-template-columns: 1fr;
    gap: var(--sp-4);
  }
  .ah2-stats {
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--sp-4);
  }
  .ah2-tag-label {
    min-width: 64px;
  }
  .ah2-video {
    padding: 0 var(--sp-4);
    margin-top: var(--sp-8);
  }
  .ah2-video-wrap { border-radius: var(--r-md) var(--r-md) 0 0; }
  .ah2-event-bar  { border-radius: var(--r-md) var(--r-md) 0 0; }
}

@media (max-width: 480px) {
  .ah2-inner {
    padding: var(--sp-12) var(--sp-4) var(--sp-8);
  }
  .dh-ah2[data-format="tip"]  .ah2-inner,
  .dh-ah2[data-format="memo"] .ah2-inner {
    padding-left: var(--sp-4);
  }
  .dh-ah2[data-format="tip"]  .ah2-inner,
  .dh-ah2[data-format="news"] .ah2-inner,
  .dh-ah2[data-format="memo"] .ah2-inner {
    padding-top: var(--sp-10);
  }
  .ah2-tag-label { display: none; }
}