/* =========================================
   BLOG — blog.css
   Field Notes editorial style
   ========================================= */

/* ── HERO ────────────────────────────────── */

.blog-hero {
  padding:       80px 48px 64px;
  border-bottom: 1px solid var(--border);
  display:       grid;
  grid-template-columns: 1fr 1fr;
  gap:           80px;
  align-items:   end;
}

.blog-kicker {
  display:        flex;
  align-items:    center;
  gap:            10px;
  font-size:      11px;
  color:          var(--blue);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom:  20px;
}

.blog-kicker::before {
  content:       "";
  width:         20px;
  height:        1.5px;
  background:    var(--blue);
  border-radius: 2px;
}

.blog-hero__title {
  font-size:      clamp(3.2rem, 6vw, 6.4rem);
  line-height:    0.92;
  letter-spacing: -0.07em;
  font-weight:    300;
  color:          var(--text-primary);
}

.blog-hero__tagline {
  font-size:     16px;
  line-height:   1.75;
  color:         var(--text-secondary);
  max-width:     44ch;
  margin-bottom: 32px;
}

/* count pills */
.blog-hero__counts {
  display:   flex;
  gap:       8px;
  flex-wrap: wrap;
}

.blog-count-pill {
  display:        inline-flex;
  align-items:    center;
  gap:            6px;
  padding:        6px 14px;
  border:         1px solid var(--border);
  border-radius:  var(--radius-pill);
  font-size:      12px;
  color:          var(--text-muted);
  background:     rgba(255,255,255,0.60);
  backdrop-filter: blur(8px);
}

.blog-count-pill__icon { opacity: 0.7; }
.blog-count-pill__num  { font-weight: 600; color: var(--text-primary); }

/* ── FEATURED POST ───────────────────────── */

.blog-featured {
  padding:       0 48px 0;
  margin-bottom: -1px;
}

.blog-featured__link {
  display:     grid;
  grid-template-columns: 1fr 1fr;
  border:      1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow:    hidden;
  background:  #ffffff;
  text-decoration: none;
  color:       inherit;
  transition:
    transform  0.4s var(--ease-out),
    box-shadow 0.4s ease;
}

.blog-featured__link:hover {
  transform:  translateY(-4px);
  box-shadow: 0 20px 60px rgba(26,70,201,0.10);
}

/* dark card */
.blog-featured__card {
  background:  var(--text-primary);
  padding:     52px 48px;
  display:     flex;
  flex-direction: column;
  justify-content: space-between;
  min-height:  360px;
  position:    relative;
  overflow:    hidden;
}

.blog-featured__card::before {
  content:  "";
  position: absolute;
  top:      -40%;
  left:     -20%;
  width:    80%;
  height:   200%;
  background: radial-gradient(ellipse, rgba(26,70,201,0.40) 0%, transparent 65%);
  pointer-events: none;
}

.blog-featured__emoji {
  font-size:   2.8rem;
  line-height: 1;
  margin-bottom: 20px;
  position:    relative;
  z-index:     1;
}

.blog-featured__tag {
  font-size:      10px;
  font-weight:    600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color:          rgba(255,255,255,0.45);
  margin-bottom:  12px;
  position:       relative;
  z-index:        1;
}

.blog-featured__title {
  font-size:      clamp(1.4rem, 2.2vw, 2rem);
  font-weight:    300;
  letter-spacing: -0.04em;
  line-height:    1.15;
  color:          #ffffff;
  margin-bottom:  14px;
  position:       relative;
  z-index:        1;
}

.blog-featured__subtitle {
  font-size:   14px;
  line-height: 1.65;
  color:       rgba(255,255,255,0.55);
  position:    relative;
  z-index:     1;
  flex:        1;
}

.blog-featured__meta {
  display:        flex;
  align-items:    center;
  gap:            12px;
  margin-top:     28px;
  padding-top:    20px;
  border-top:     1px solid rgba(255,255,255,0.10);
  position:       relative;
  z-index:        1;
}

.blog-featured__meta-item {
  font-size:   12px;
  color:       rgba(255,255,255,0.40);
}

.blog-featured__meta-dot {
  width:         3px;
  height:        3px;
  border-radius: 50%;
  background:    rgba(255,255,255,0.25);
}

/* second featured */
.blog-featured__second {
  padding:        44px 40px;
  display:        flex;
  flex-direction: column;
  justify-content: space-between;
  border-left:    1px solid var(--border);
}

.blog-featured__second-emoji {
  font-size:     2.4rem;
  line-height:   1;
  margin-bottom: 16px;
}

.blog-featured__second-tag {
  font-size:      10px;
  font-weight:    600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color:          var(--blue);
  margin-bottom:  10px;
}

.blog-featured__second-title {
  font-size:      clamp(1.2rem, 1.8vw, 1.6rem);
  font-weight:    400;
  letter-spacing: -0.03em;
  line-height:    1.20;
  color:          var(--text-primary);
  margin-bottom:  12px;
  transition:     color var(--t-fast) ease;
}

.blog-featured__link:hover .blog-featured__second-title { color: var(--blue); }

.blog-featured__second-excerpt {
  font-size:   14px;
  line-height: 1.7;
  color:       var(--text-muted);
  flex:        1;
}

.blog-featured__second-meta {
  display:     flex;
  align-items: center;
  gap:         10px;
  margin-top:  24px;
  padding-top: 18px;
  border-top:  1px solid var(--border);
}

.blog-featured__second-meta-item {
  font-size: 12px;
  color:     var(--text-muted);
}

/* ── FILTER + GRID ───────────────────────── */

.blog-filter {
  padding:         20px 48px;
  display:         flex;
  gap:             8px;
  flex-wrap:       wrap;
  align-items:     center;
  border-bottom:   1px solid var(--border);
  border-top:      1px solid var(--border);
  margin-top:      48px;
  position:        sticky;
  top:             0;
  z-index:         80;
  background:      rgba(245,245,243,0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  transition:      top 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

body:not(.nav-hidden) .blog-filter { top: 72px; }

.blog-filter__label {
  font-size:      11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color:          var(--text-muted);
  margin-right:   8px;
}

.blog-filter__btn {
  display:        inline-flex;
  align-items:    center;
  gap:            6px;
  padding:        7px 14px;
  border:         1.5px solid var(--border);
  border-radius:  var(--radius-pill);
  background:     transparent;
  font-size:      12px;
  font-weight:    500;
  color:          var(--text-muted);
  cursor:         pointer;
  font-family:    var(--font-primary);
  transition:
    border-color var(--t-fast) ease,
    color        var(--t-fast) ease,
    background   var(--t-fast) ease;
}

.blog-filter__btn:hover,
.blog-filter__btn.is-active {
  border-color: var(--blue);
  color:        var(--blue);
  background:   rgba(26,70,201,0.05);
}

/* ── POST GRID ───────────────────────────── */

.blog-grid {
  padding:               48px 48px 96px;
  display:               grid;
  grid-template-columns: repeat(3, 1fr);
  gap:                   20px;
  align-items:           start;
  grid-auto-rows:        auto;
}

/* last card in a row of 3 — if orphaned, span remaining cols */
.blog-card:last-child:nth-child(3n - 1) {
  grid-column: span 2;
}
.blog-card:last-child:nth-child(3n - 2) {
  grid-column: span 3;
}

/* ── POST CARD ───────────────────────────── */

.blog-card {
  background:     #ffffff;
  border:         1px solid var(--border);
  border-radius:  var(--radius-lg);
  overflow:       hidden;
  display:        flex;
  flex-direction: column;
  text-decoration: none;
  color:          inherit;
  transition:
    transform    0.4s var(--ease-out),
    box-shadow   0.4s ease,
    border-color 0.3s ease;
}

.blog-card:hover {
  transform:    translateY(-4px);
  box-shadow:   0 16px 48px rgba(26,70,201,0.09);
  border-color: rgba(26,70,201,0.18);
}

.blog-card--dark {
  background: var(--text-primary);
  color:      #ffffff;
}

/* emoji header */
.blog-card__emoji-wrap {
  padding:    28px 28px 0;
  font-size:  2.2rem;
  line-height: 1;
}

.blog-card__body {
  padding:        20px 28px 24px;
  flex:           1;
  display:        flex;
  flex-direction: column;
  gap:            8px;
}

.blog-card__tag {
  font-size:      10px;
  font-weight:    600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color:          var(--blue);
}

.blog-card--dark .blog-card__tag {
  color: rgba(255,255,255,0.45);
}

.blog-card__title {
  font-size:      1.05rem;
  font-weight:    500;
  letter-spacing: -0.02em;
  line-height:    1.25;
  color:          var(--text-primary);
  transition:     color var(--t-fast) ease;
}

.blog-card--dark .blog-card__title { color: #ffffff; }

.blog-card:hover .blog-card__title { color: var(--blue); }
.blog-card--dark:hover .blog-card__title { color: rgba(255,255,255,0.85); }

.blog-card__excerpt {
  font-size:   13px;
  line-height: 1.65;
  color:       var(--text-muted);
  display:     -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow:    hidden;
  flex:        1;
}

.blog-card--dark .blog-card__excerpt { color: rgba(255,255,255,0.50); }

.blog-card__takeaway {
  margin-top:    8px;
  padding:       10px 14px;
  background:    rgba(26,70,201,0.05);
  border-left:   2px solid var(--blue);
  border-radius: 0 6px 6px 0;
  font-size:     12px;
  line-height:   1.55;
  color:         var(--blue);
  font-style:    italic;
}

.blog-card--dark .blog-card__takeaway {
  background:  rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.30);
  color:        rgba(255,255,255,0.60);
}

.blog-card__footer {
  padding:     14px 28px;
  border-top:  1px solid var(--border);
  display:     flex;
  align-items: center;
  justify-content: space-between;
}

.blog-card--dark .blog-card__footer {
  border-top-color: rgba(255,255,255,0.08);
}

.blog-card__meta {
  font-size: 11px;
  color:     var(--text-muted);
}

.blog-card--dark .blog-card__meta { color: rgba(255,255,255,0.35); }

.blog-card__read-more {
  font-size:  12px;
  font-weight: 500;
  color:       var(--blue);
  opacity:     0;
  transform:   translateX(-6px);
  transition:
    opacity   var(--t-fast) ease,
    transform var(--t-fast) ease;
  display:     flex;
  align-items: center;
  gap:         4px;
}

.blog-card--dark .blog-card__read-more { color: rgba(255,255,255,0.70); }
.blog-card:hover .blog-card__read-more { opacity: 1; transform: translateX(0); }

/* ── NEWSLETTER BAND ─────────────────────── */

.blog-newsletter {
  margin:         0 48px 96px;
  padding:        48px 56px;
  background:     rgba(26,70,201,0.04);
  border:         1px solid rgba(26,70,201,0.12);
  border-radius:  var(--radius-lg);
  display:        grid;
  grid-template-columns: 1fr auto;
  gap:            48px;
  align-items:    center;
}

.blog-newsletter__title {
  font-size:      1.4rem;
  font-weight:    400;
  letter-spacing: -0.03em;
  color:          var(--text-primary);
  margin-bottom:  6px;
}

.blog-newsletter__sub {
  font-size:   14px;
  color:       var(--text-muted);
  line-height: 1.6;
}

.blog-newsletter__form {
  display: flex;
  gap:     8px;
}

.blog-newsletter__input {
  padding:     12px 18px;
  border:      1.5px solid var(--border);
  border-radius: var(--radius-pill);
  font-size:   14px;
  font-family: var(--font-primary);
  color:       var(--text-primary);
  background:  #ffffff;
  outline:     none;
  width:       240px;
  transition:  border-color var(--t-fast) ease, box-shadow var(--t-fast) ease;
}

.blog-newsletter__input:focus {
  border-color: var(--blue);
  box-shadow:   0 0 0 3px rgba(26,70,201,0.10);
}

.blog-newsletter__btn {
  padding:        12px 22px;
  background:     var(--blue);
  color:          #ffffff;
  border:         none;
  border-radius:  var(--radius-pill);
  font-size:      13px;
  font-weight:    600;
  cursor:         pointer;
  font-family:    var(--font-primary);
  white-space:    nowrap;
  transition:
    background var(--t-fast) ease,
    transform  var(--t-fast) ease;
}

.blog-newsletter__btn:hover {
  background: #1339a8;
  transform:  translateY(-1px);
}

/* ── RESPONSIVE ──────────────────────────── */

@media (max-width: 1024px) {

  .blog-hero     { padding: 64px 40px 52px; grid-template-columns: 1fr; gap: 40px; }
  .blog-featured { padding: 0 40px; }
  .blog-filter   { padding: 16px 40px; }
  .blog-grid     { grid-template-columns: 1fr 1fr; padding: 40px 40px 72px; }
  .blog-newsletter { margin: 0 40px 72px; grid-template-columns: 1fr; gap: 24px; }
  .blog-newsletter__form { flex-wrap: wrap; }
  .blog-newsletter__input { width: 100%; }

}

@media (max-width: 768px) {

  .blog-hero      { padding: 48px 20px 40px; }
  .blog-featured  { padding: 0 20px; }
  .blog-featured__link { grid-template-columns: 1fr; }
  .blog-featured__second { border-left: none; border-top: 1px solid var(--border); }
  .blog-filter    { padding: 14px 20px; gap: 6px; }
  .blog-filter__label { display: none; }
  .blog-grid      { grid-template-columns: 1fr; padding: 24px 20px 64px; gap: 12px; }
  .blog-newsletter { margin: 0 20px 64px; padding: 32px 24px; }

}