/* Dead Simple Email — Blog index (blog.html only) */

:root {
  --bx-paper: #f7f1e8;
  --bx-paper-deep: #ebdfcf;
  --bx-mist: #dbe7f0;
  --bx-sky: #6d9bc8;
  --bx-sky-deep: #4775a6;
  --bx-sky-dark: #2d5178;
  --bx-ink: #171f2b;
  --bx-ink-soft: #314157;
  --bx-glow: #a7f4ff;
  --bx-line: rgba(31, 46, 68, 0.12);
  --bx-line-strong: rgba(31, 46, 68, 0.22);
  --bx-shadow: 0 24px 60px rgba(39, 53, 74, 0.12);
  --bx-shadow-soft: 0 12px 30px rgba(39, 53, 74, 0.08);
}

body.blog-page {
  font-family: 'Public Sans', sans-serif;
  color: var(--bx-ink-soft);
  background:
    radial-gradient(circle at top, rgba(255,255,255,0.95), rgba(247,241,232,0.86) 42%, rgba(236,228,216,0.96)),
    linear-gradient(180deg, #fbf8f2 0%, #f2ebe0 100%);
  min-height: 100vh;
}

.blog-page h1,
.blog-page h2,
.blog-page h3 {
  font-family: 'Space Grotesk', sans-serif;
  color: var(--bx-ink);
  letter-spacing: -0.02em;
}

.bx-noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.12;
  z-index: 0;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,0.8), transparent 18%),
    radial-gradient(circle at 80% 8%, rgba(109,155,200,0.08), transparent 24%),
    radial-gradient(circle at 78% 78%, rgba(167,244,255,0.12), transparent 18%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180' viewBox='0 0 180 180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.95' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.2'/%3E%3C/svg%3E");
  background-size: auto, auto, auto, 190px 190px;
}

.blog-page .nav,
.blog-page main,
.blog-page .footer {
  position: relative;
  z-index: 1;
}

.blog-page .nav {
  background: rgba(247, 241, 232, 0.82);
  border-bottom: 1px solid rgba(45, 81, 120, 0.11);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.blog-page .nav--scrolled {
  box-shadow: 0 12px 30px rgba(39, 53, 74, 0.08);
}

.blog-page .nav__links a,
.blog-page .nav__hamburger,
.blog-page .nav__mobile a {
  color: var(--bx-ink-soft);
}

.blog-page .nav__mobile {
  background: rgba(247, 241, 232, 0.98);
}

/* ---------- Scroll reveal ---------- */

body.has-reveal .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 640ms ease, transform 640ms ease;
}

body.has-reveal .reveal--delay {
  transition-delay: 120ms;
}

body.has-reveal .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Header ---------- */

.bx-header {
  padding: calc(var(--nav-h) + 74px) 0 30px;
}

.bx-kicker {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--bx-line);
  background: rgba(255,255,255,0.48);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.7);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bx-sky-dark);
}

.bx-header h1 {
  margin: 22px 0 16px;
  font-size: clamp(2.4rem, 4.4vw, 3.4rem);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.03em;
  max-width: 17ch;
}

.bx-header__desc {
  margin: 0;
  max-width: 36rem;
  font-size: 1.06rem;
  line-height: 1.7;
}

.bx-header__meta {
  margin-top: 20px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--bx-sky-deep);
}

/* ---------- Featured post ---------- */

.bx-featured {
  padding: 26px 0 10px;
}

.bx-featured__panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
  gap: 30px 48px;
  align-items: center;
  padding: 46px 50px;
  border-radius: 30px;
  border: 1px solid rgba(16, 24, 36, 0.85);
  background:
    radial-gradient(circle at 84% 16%, rgba(167, 244, 255, 0.13), transparent 42%),
    radial-gradient(circle at 10% 90%, rgba(109, 155, 200, 0.22), transparent 48%),
    linear-gradient(180deg, #22314a 0%, #141c29 100%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.08),
    0 40px 80px rgba(23, 31, 43, 0.32);
  overflow: hidden;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

a.bx-featured__panel:hover {
  transform: translateY(-3px);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.08),
    0 48px 92px rgba(23, 31, 43, 0.38);
}

.bx-featured__panel::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 96px;
  height: 96px;
  background: linear-gradient(225deg, rgba(167, 244, 255, 0.1) 0%, rgba(167, 244, 255, 0.1) 50%, transparent 50%);
  border-bottom-left-radius: 30px;
  pointer-events: none;
}

.bx-featured__tag {
  display: inline-flex;
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid rgba(159, 178, 200, 0.28);
  background: rgba(255,255,255,0.08);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bx-glow);
}

.bx-featured__copy h2 {
  margin: 18px 0 14px;
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: #f2f7fd;
  max-width: 22ch;
}

.bx-featured__copy p {
  margin: 0 0 18px;
  max-width: 36rem;
  font-size: 0.99rem;
  line-height: 1.7;
  color: #b6c5d8;
}

.bx-featured__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: #8fa3bb;
}

.bx-featured__meta strong {
  color: var(--bx-glow);
  font-weight: 500;
}

.bx-featured__cta {
  transition: transform 200ms ease;
}

a.bx-featured__panel:hover .bx-featured__cta {
  transform: translateX(4px);
}

.bx-featured__term {
  border-radius: 18px;
  border: 1px solid rgba(159, 178, 200, 0.2);
  background: rgba(10, 16, 26, 0.55);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
  overflow: hidden;
}

.bx-featured__term-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 11px 15px;
  border-bottom: 1px solid rgba(159, 178, 200, 0.14);
}

.bx-featured__term-bar span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(159, 178, 200, 0.24);
}

.bx-featured__term-bar strong {
  margin-left: 6px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.66rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9fb2c8;
}

.bx-featured__term pre {
  margin: 0;
  padding: 16px 18px 18px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.78rem;
  line-height: 1.75;
  color: #dfe9f5;
  white-space: pre;
  overflow-x: auto;
}

.bx-tok-cmd { color: #f0c36a; }
.bx-tok-str { color: #a7f4ff; }
.bx-tok-ok { color: #6fcf97; }
.bx-tok-dim { color: #8fa3bb; }

/* ---------- Filters ---------- */

.bx-filters {
  padding: 34px 0 8px;
}

.bx-filters__row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.bx-filter {
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--bx-line);
  background: rgba(255,255,255,0.46);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.7);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--bx-ink-soft);
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.bx-filter:hover {
  background: rgba(255,255,255,0.78);
  transform: translateY(-1px);
}

.bx-filter.is-active {
  color: #f2f7fd;
  border-color: rgba(29, 49, 74, 0.5);
  background: linear-gradient(180deg, #5687b8 0%, #335c85 100%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.26), 0 10px 20px rgba(63, 114, 169, 0.2);
}

.bx-filter__count {
  margin-left: 6px;
  opacity: 0.62;
}

/* ---------- Post grid ---------- */

.bx-grid-section {
  padding: 26px 0 40px;
}

.bx-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.bx-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 26px 26px 22px;
  border-radius: 22px;
  border: 1px solid var(--bx-line);
  background: linear-gradient(180deg, rgba(255,255,255,0.6), rgba(255,253,249,0.42));
  box-shadow: var(--bx-shadow-soft);
  overflow: hidden;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.bx-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 44px;
  height: 44px;
  background: linear-gradient(225deg, rgba(219, 231, 240, 0.9) 0%, rgba(219, 231, 240, 0.9) 50%, transparent 50%);
  border-bottom-left-radius: 18px;
  pointer-events: none;
  transition: background 180ms ease;
}

.bx-card:hover {
  transform: translateY(-4px);
  border-color: var(--bx-line-strong);
  box-shadow: var(--bx-shadow);
}

.bx-card:hover::after {
  background: linear-gradient(225deg, rgba(167, 244, 255, 0.65) 0%, rgba(167, 244, 255, 0.65) 50%, transparent 50%);
}

.bx-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-right: 30px;
}

.bx-card__tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bx-sky-dark);
}

.bx-card__num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  color: rgba(49, 65, 87, 0.42);
}

.bx-card h3 {
  margin: 0 0 10px;
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.02em;
  transition: color 160ms ease;
}

.bx-card:hover h3 {
  color: var(--bx-sky-dark);
}

.bx-card__excerpt {
  margin: 0 0 20px;
  font-size: 0.92rem;
  line-height: 1.62;
  color: var(--bx-ink-soft);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.bx-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--bx-line);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: rgba(49, 65, 87, 0.72);
}

.bx-card__arrow {
  color: var(--bx-sky-deep);
  font-size: 0.95rem;
  transition: transform 200ms ease;
}

.bx-card:hover .bx-card__arrow {
  transform: translateX(4px);
}

.bx-card[hidden],
.bx-featured__panel[hidden] {
  display: none;
}

.bx-empty {
  display: none;
  padding: 40px 0;
  text-align: center;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.85rem;
  color: var(--bx-ink-soft);
}

/* ---------- Subscribe ---------- */

.bx-sub {
  padding: 58px 0 108px;
}

.bx-sub__panel {
  position: relative;
  padding: 46px 52px;
  border-radius: 30px;
  border: 1px solid rgba(16, 24, 36, 0.85);
  background:
    radial-gradient(circle at 82% 18%, rgba(167, 244, 255, 0.14), transparent 42%),
    radial-gradient(circle at 12% 88%, rgba(109, 155, 200, 0.24), transparent 48%),
    linear-gradient(180deg, #22314a 0%, #141c29 100%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.08),
    0 40px 80px rgba(23, 31, 43, 0.32);
  overflow: hidden;
  text-align: center;
}

.bx-sub__panel::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 96px;
  height: 96px;
  background: linear-gradient(225deg, rgba(167, 244, 255, 0.1) 0%, rgba(167, 244, 255, 0.1) 50%, transparent 50%);
  border-bottom-left-radius: 30px;
  pointer-events: none;
}

.bx-sub__panel h2 {
  margin: 16px 0 10px;
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  letter-spacing: -0.03em;
  color: #f2f7fd;
}

.bx-sub__panel > p {
  margin: 0 auto 26px;
  max-width: 32rem;
  font-size: 0.98rem;
  line-height: 1.66;
  color: #b6c5d8;
}

.bx-sub__kicker {
  display: inline-flex;
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid rgba(159, 178, 200, 0.28);
  background: rgba(255,255,255,0.08);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bx-glow);
}

.bx-sub .signup-form__input {
  border-radius: 999px;
  border: 1px solid rgba(159, 178, 200, 0.3);
  background: rgba(255,255,255,0.08);
}

.bx-sub .signup-form__input:focus {
  border-color: rgba(167, 244, 255, 0.6);
}

.bx-sub .signup-form button {
  border-radius: 999px;
  font-family: 'IBM Plex Mono', monospace;
  letter-spacing: 0.04em;
}

.bx-sub .signup-form__success {
  color: var(--bx-glow);
}

/* ---------- Footer harmonizing ---------- */

.blog-page .footer {
  background: transparent;
  border-top: 1px solid var(--bx-line);
}

/* ---------- Responsive ---------- */

@media (max-width: 1100px) {
  .bx-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .bx-featured__panel {
    grid-template-columns: 1fr;
    padding: 40px 38px;
  }

  .bx-featured__term {
    max-width: 480px;
  }
}

@media (max-width: 768px) {
  .bx-header {
    padding-top: calc(var(--nav-h) + 48px);
  }

  .bx-featured__panel {
    padding: 32px 26px;
  }

  .bx-sub__panel {
    padding: 38px 26px;
  }
}

@media (max-width: 640px) {
  .bx-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bx-card,
  .bx-card__arrow,
  .bx-featured__panel,
  .bx-featured__cta,
  .bx-filter {
    transition: none;
  }
}