/* ============================================================
   StackNex Blog — Article + Index stylesheet
   ============================================================ */

.bloghero {
  padding: 180px 0 60px;
  position: relative;
}
.bloghero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(800px 500px at 20% 30%, rgba(34,211,238,0.18), transparent 55%),
    radial-gradient(900px 600px at 80% 60%, rgba(37,99,235,0.20), transparent 60%);
  pointer-events: none;
}
.bloghero > .container { position: relative; z-index: 1; text-align: center; }

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--text-3);
  margin-bottom: 24px;
}
.breadcrumb a { color: var(--blue-cyan); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { color: var(--text-4); }

.bloghero__title {
  font-size: clamp(40px, 5.6vw, 72px);
  line-height: 1.05;
  margin: 8px auto 22px;
  max-width: 950px;
}
.bloghero__sub {
  margin: 0 auto 36px;
  max-width: 720px;
  text-align: center;
}
.bloghero__filters {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 8px;
  max-width: 720px;
  margin: 0 auto;
}
.filter-chip {
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}
.filter-chip:hover { color: #fff; border-color: rgba(34,211,238,0.3); }
.filter-chip.active {
  background: var(--grad-soft);
  border-color: rgba(34,211,238,0.5);
  color: var(--blue-cyan);
}

/* ---------- Article ---------- */
.article {
  padding: 60px 0 100px;
  position: relative;
}
.article__container {
  max-width: 760px;
  margin: 0 auto;
}
.article__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--text-3);
  margin-bottom: 18px;
}
.article__cat {
  color: var(--blue-cyan);
  background: rgba(34,211,238,0.1);
  border: 1px solid rgba(34,211,238,0.3);
  padding: 4px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 11px;
}
.article__dot { color: var(--text-4); }

.article__title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4.6vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
  text-wrap: balance;
}
.article__lede {
  font-size: 19px;
  line-height: 1.6;
  color: var(--text-2);
  margin: 0 0 40px;
  text-wrap: pretty;
}

.article__hero {
  margin: 0 0 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-strong);
  box-shadow: 0 40px 80px -30px rgba(0,0,0,0.7);
}
.article__hero img {
  width: 100%;
  height: auto;
  display: block;
}
.article__hero figcaption,
.article__inline-img figcaption {
  font-size: 13px;
  color: var(--text-3);
  padding: 14px 18px;
  background: rgba(255,255,255,0.02);
  border-top: 1px solid var(--border);
  font-style: italic;
}

.article__body h3 {
  font-family: var(--font-display);
  font-size: 28px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #fff;
  margin: 56px 0 18px;
  scroll-margin-top: 100px;
}
.article__body h3:first-child { margin-top: 0; }
.article__body p {
  font-size: 17px;
  line-height: 1.7;
  color: rgba(255,255,255,0.82);
  margin: 0 0 22px;
  text-wrap: pretty;
}
.article__body p strong { color: #fff; }
.article__body p em { color: var(--blue-cyan); font-style: normal; }
.article__body code {
  font-family: var(--font-mono);
  font-size: 14px;
  padding: 2px 8px;
  background: rgba(34,211,238,0.1);
  border: 1px solid rgba(34,211,238,0.25);
  border-radius: 6px;
  color: var(--blue-cyan);
}
.article__body ul, .article__body ol {
  margin: 0 0 28px;
  padding-left: 24px;
  color: rgba(255,255,255,0.82);
  font-size: 17px;
  line-height: 1.7;
}
.article__body ul li, .article__body ol li {
  margin-bottom: 10px;
}
.article__body ul li::marker { color: var(--blue-cyan); }
.article__body ol li::marker { color: var(--blue-cyan); font-weight: 700; }

.article__inline-img {
  margin: 36px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-strong);
}
.article__inline-img img { width: 100%; height: auto; display: block; }

.callout {
  margin: 36px 0;
  padding: 22px 26px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(34,211,238,0.07), rgba(37,99,235,0.04));
  border: 1px solid rgba(34,211,238,0.25);
  border-left: 4px solid var(--blue-cyan);
}
.callout__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-cyan);
  margin-bottom: 10px;
}
.callout p { margin: 0; font-size: 16px; line-height: 1.6; color: #fff; }
.callout--accent {
  background: linear-gradient(135deg, rgba(52,211,153,0.07), rgba(16,185,129,0.04));
  border-color: rgba(52,211,153,0.3);
  border-left-color: #34d399;
}
.callout--accent .callout__tag { color: #34d399; }

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 32px 0;
}
@media (max-width: 700px) { .metric-grid { grid-template-columns: 1fr; } }
.metric {
  padding: 20px;
  border-radius: 14px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  text-align: left;
}
.metric__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue-cyan);
  display: flex; flex-direction: column;
}
.metric__label span {
  text-transform: none;
  letter-spacing: 0;
  color: var(--text-3);
  font-size: 11px;
  margin-top: 2px;
}
.metric__value {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 600;
  color: #fff;
  margin: 8px 0 4px;
  letter-spacing: -0.02em;
}
.metric__desc {
  font-size: 12.5px;
  color: var(--text-3);
}

.article__cta {
  margin: 50px 0 0;
  padding: 36px 32px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(34,211,238,0.08), rgba(37,99,235,0.04));
  border: 1px solid rgba(34,211,238,0.25);
  text-align: center;
}
.article__cta h3 { font-size: 28px; margin: 0 0 12px; }
.article__cta p { color: var(--text-2); font-size: 16px; max-width: 540px; margin: 0 auto 24px; }

.article__tags {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin: 50px 0 30px;
  padding-top: 30px;
  border-top: 1px solid var(--border);
}
.article__tags .tag {
  font-size: 12px;
  font-family: var(--font-mono);
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text-2);
}

.article__share {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px;
  color: var(--text-3);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.article__share a {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  transition: border-color .2s ease, color .2s ease;
}
.article__share a:hover { color: var(--blue-cyan); border-color: rgba(34,211,238,0.4); }

/* TOC sidebar (desktop only) */
.article__toc {
  position: fixed;
  right: max(40px, calc((100vw - 1240px) / 2));
  top: 130px;
  width: 220px;
  padding: 22px 20px;
  background: rgba(10,12,22,0.6);
  border: 1px solid var(--border);
  border-radius: 14px;
  backdrop-filter: blur(20px);
  display: none;
}
@media (min-width: 1280px) { .article__toc { display: block; } }
.toc__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 14px;
}
.article__toc ol {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}
.article__toc ol li {
  counter-increment: step;
  font-size: 13px;
}
.article__toc ol li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  color: var(--text-4);
  margin-right: 8px;
}
.article__toc a {
  color: var(--text-2);
  transition: color .2s ease;
}
.article__toc a:hover { color: var(--blue-cyan); }

/* ---------- More articles ---------- */
.more { padding: 80px 0; border-top: 1px solid var(--border); }
.more__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
@media (max-width: 1000px) { .more__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .more__grid { grid-template-columns: 1fr; } }

.more-card {
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
  border: 1px solid var(--border);
  overflow: hidden;
  transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
  display: flex; flex-direction: column;
  cursor: pointer;
}
.more-card:hover {
  transform: translateY(-5px);
  border-color: rgba(34,211,238,0.3);
  box-shadow: 0 30px 60px -25px rgba(29,155,240,0.4);
}
.more-card__media {
  aspect-ratio: 16 / 9;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background: #050810;
}
.more-card__media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .6s cubic-bezier(.2,.7,.2,1);
  filter: brightness(0.85);
}
.more-card:hover .more-card__media img { transform: scale(1.06); filter: brightness(1); }
.more-card__cat {
  position: absolute;
  top: 14px; left: 14px;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(6,8,14,0.85);
  border: 1px solid rgba(34,211,238,0.3);
  backdrop-filter: blur(8px);
  color: var(--blue-cyan);
  z-index: 2;
}
.more-card__body { padding: 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.more-card h4 { font-family: var(--font-display); font-size: 19px; line-height: 1.25; letter-spacing: -0.015em; color: #fff; margin: 0; }
.more-card p { font-size: 14px; color: var(--text-3); margin: 0; line-height: 1.5; }
.more-card__foot {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: auto;
  padding-top: 14px;
  font-size: 12px;
  color: var(--text-3);
  font-family: var(--font-mono);
}
.more-card .readmore { color: var(--blue-cyan); }

/* ---------- Newsletter ---------- */
.newsletter {
  padding: 80px 0 100px;
  border-top: 1px solid var(--border);
}
.newsletter__inner {
  padding: 50px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(34,211,238,0.06), rgba(37,99,235,0.03));
  border: 1px solid var(--border-strong);
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
}
@media (max-width: 900px) { .newsletter__inner { grid-template-columns: 1fr; padding: 32px; } }
.newsletter__form { display: flex; gap: 8px; }
.newsletter__form input {
  flex: 1;
  padding: 14px 18px;
  border-radius: 999px;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--border-strong);
  color: #fff;
  font-family: inherit;
  font-size: 15px;
}
.newsletter__form input:focus {
  outline: none;
  border-color: rgba(34,211,238,0.5);
  background: rgba(34,211,238,0.05);
}
.newsletter__form button { flex-shrink: 0; }

/* Hide hero photo on blog */
.bloghero ~ * { position: relative; z-index: 1; }