/* =========================================================
   BK ENTERPRISES — BLOG PAGE STYLES
   ========================================================= */

:root {
  /* Colors */
  --color-bg: #F5F7FC;
  --color-surface: #FFFFFF;
  --color-ink: #101827;
  --color-ink-soft: #55607A;
  --color-primary: #1D4ED8;
  --color-primary-dark: #17399E;
  --color-primary-pale: #E7EDFC;
  --color-accent: #D98E4A;
  --color-accent-dark: #B96F2E;
  --color-line: #DDE4F7;

  /* Type */
  --font-display: 'Fraunces', serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* Layout */
  --container: 1180px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-card: 0 2px 14px rgba(20, 39, 38, 0.06);
  --shadow-header: 0 2px 20px rgba(20, 39, 38, 0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2.5rem);
}

a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
img { max-width: 100%; display: block; }

/* =========================================================
   HEADER
   NOTE: If your global stylesheet already styles .header and
   its children on other pages, delete this block to avoid
   duplicate rules — keep only the sections below "BLOG HERO".
   ========================================================= */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  box-shadow: var(--shadow-header);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0.85rem clamp(1.25rem, 4vw, 2.5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
}

.logo-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: var(--color-ink);
  line-height: 1.2;
}

.logo-tagline {
  font-size: 0.7rem;
  color: var(--color-ink-soft);
  letter-spacing: 0.02em;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 2.5vw, 2.25rem);
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-ink);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: color 0.15s ease;
}

.nav-link:hover { color: var(--color-primary); }

.dropdown-wrap { position: relative; }

.dropdown-btn .chev {
  font-size: 0.65rem;
  transition: transform 0.2s ease;
}

.dropdown-btn.chev-open .chev,
.dropdown-menu.open ~ .dropdown-btn .chev { transform: rotate(180deg); }

.dropdown-menu {
  position: absolute;
  top: calc(100% + 0.85rem);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  min-width: 220px;
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
  z-index: 50;
}

.dropdown-menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item {
  display: block;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--color-ink);
  transition: background 0.15s ease;
}

.dropdown-item:hover { background: var(--color-primary-pale); color: var(--color-primary-dark); }

.header-right {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.call-btn {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--color-primary);
  color: #fff;
  padding: 0.55rem 1.05rem;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  white-space: nowrap;
  transition: background 0.15s ease;
}

.call-btn:hover { background: var(--color-primary-dark); }

.whatsapp-btn {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: #25D366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.hamburger {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--color-ink);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.75rem clamp(1.25rem, 4vw, 2.5rem) 1.5rem;
  border-top: 1px solid var(--color-line);
}

.mobile-menu.open { display: flex; }

.mobile-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0.25rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-line);
}

.mobile-services-btn .chev { font-size: 0.7rem; transition: transform 0.2s ease; }
.mobile-services-sub.open ~ .mobile-services-btn .chev,
.mobile-services-btn.chev-open .chev { transform: rotate(180deg); }

.mobile-services-sub {
  display: none;
  flex-direction: column;
  padding-left: 1rem;
}

.mobile-services-sub.open { display: flex; }

.mobile-sub-link {
  padding: 0.65rem 0.25rem;
  font-size: 0.88rem;
  color: var(--color-ink-soft);
  border-bottom: 1px solid var(--color-line);
}

.mobile-call-btn,
.mobile-whatsapp-btn {
  margin-top: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.92rem;
}

.mobile-call-btn { background: var(--color-primary-pale); color: var(--color-primary-dark); }
.mobile-whatsapp-btn { background: #25D366; color: #fff; margin-top: 0.6rem; }

@media (max-width: 860px) {
  .desktop-nav, .header-right .call-btn { display: none; }
  .hamburger { display: flex; }
}

/* =========================================================
   BLOG HERO
   ========================================================= */

.blog-hero {
  padding: clamp(3rem, 7vw, 5.5rem) 0 clamp(2.5rem, 5vw, 3.5rem);
  text-align: center;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  margin-bottom: 1.1rem;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.9rem, 4.5vw, 3.1rem);
  line-height: 1.15;
  color: var(--color-ink);
  max-width: 780px;
  margin: 0 auto 1.15rem;
}

.hero-sub {
  font-size: clamp(0.95rem, 1.5vw, 1.05rem);
  color: var(--color-ink-soft);
  max-width: 560px;
  margin: 0 auto clamp(2.5rem, 5vw, 3.5rem);
}

/* Signature flow diagram */
.flow-diagram {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  max-width: 900px;
  margin: 0 auto;
}

.flow-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: clamp(90px, 15vw, 150px);
}

.flow-node {
  width: clamp(46px, 6vw, 58px);
  height: clamp(46px, 6vw, 58px);
  border-radius: 999px;
  background: var(--color-surface);
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(1rem, 2vw, 1.25rem);
  box-shadow: var(--shadow-card);
  position: relative;
  z-index: 2;
}

.flow-stage:last-child .flow-node {
  background: var(--color-primary);
  color: #fff;
}

.flow-label {
  font-family: var(--font-mono);
  font-size: clamp(0.68rem, 1.2vw, 0.78rem);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-top: 0.65rem;
  color: var(--color-ink);
}

.flow-caption {
  font-size: clamp(0.66rem, 1.1vw, 0.74rem);
  color: var(--color-ink-soft);
  margin-top: 0.25rem;
  text-align: center;
  line-height: 1.35;
}

.flow-line {
  flex: 1;
  height: 1.5px;
  background: repeating-linear-gradient(to right, var(--color-primary) 0, var(--color-primary) 6px, transparent 6px, transparent 12px);
  margin-top: clamp(23px, 3vw, 29px);
  min-width: 20px;
}

@media (prefers-reduced-motion: no-preference) {
  .flow-line { background-size: 200% 100%; animation: flow-move 6s linear infinite; }
}

@keyframes flow-move {
  from { background-position-x: 0; }
  to { background-position-x: -24px; }
}

@media (max-width: 720px) {
  .flow-diagram { flex-wrap: wrap; gap: 1.5rem 0; }
  .flow-line { display: none; }
  .flow-stage { width: 42%; }
}

/* =========================================================
   FILTER BAR
   ========================================================= */

.filter-bar {
  background: var(--color-surface);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.filter-bar-inner {
  padding: clamp(0.9rem, 2vw, 1.15rem) clamp(1.25rem, 4vw, 2.5rem);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  justify-content: space-between;
}

.search-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  padding: 0.55rem 1rem;
  flex: 1 1 220px;
  max-width: 320px;
  color: var(--color-ink-soft);
}

.search-wrap input {
  border: none;
  outline: none;
  background: transparent;
  font-size: 0.88rem;
  width: 100%;
  color: var(--color-ink);
  font-family: var(--font-body);
}

.category-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pill {
  padding: 0.5rem 1.05rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-ink-soft);
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  transition: all 0.15s ease;
  white-space: nowrap;
}

.pill:hover { border-color: var(--color-primary); color: var(--color-primary-dark); }

.pill.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* =========================================================
   FEATURED POST
   ========================================================= */

.featured-wrap { padding: clamp(2.5rem, 5vw, 3.5rem) 0 0; }

.featured-post {
  display: grid;
  grid-template-columns: clamp(80px, 14vw, 150px) 1fr;
  gap: clamp(1.25rem, 3vw, 2.25rem);
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  box-shadow: var(--shadow-card);
}

.featured-icon {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  background: var(--color-primary-pale);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

.featured-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.25rem, 2.6vw, 1.65rem);
  line-height: 1.25;
  margin: 0.5rem 0 0.65rem;
}

@media (max-width: 620px) {
  .featured-post { grid-template-columns: 1fr; }
  .featured-icon { max-width: 80px; }
}

/* =========================================================
   BLOG GRID / CARDS
   ========================================================= */

.blog-grid-section { padding: clamp(2rem, 4vw, 3rem) 0 clamp(3.5rem, 6vw, 5rem); }

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(1.1rem, 2.5vw, 1.6rem);
}

.post-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: clamp(1.3rem, 2.5vw, 1.6rem);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.post-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(20, 39, 38, 0.1);
}

.post-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-pale);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  margin-bottom: 1rem;
}

.post-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
}

.post-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-accent-dark);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.post-date {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-ink-soft);
  white-space: nowrap;
}

.post-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.02rem, 1.8vw, 1.15rem);
  line-height: 1.3;
  margin-bottom: 0.55rem;
}

.post-content {
  position: relative;
  overflow: hidden;
  max-height: 5.6em;
  margin-bottom: 0.9rem;
  transition: max-height 0.4s ease;
}

.post-content p {
  font-size: 0.88rem;
  color: var(--color-ink-soft);
  margin-bottom: 0.9rem;
}

.post-content::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1.8em;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0), var(--color-surface));
  transition: opacity 0.2s ease;
}

.post-content.expanded {
  max-height: 19800px;
}

.post-content.expanded::after {
  opacity: 0;
}

.read-more {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.read-more i {
  font-size: 0.7rem;
  transition: transform 0.2s ease;
}

.read-more.is-expanded i { transform: rotate(180deg); }

.no-results {
  display: none;
  text-align: center;
  color: var(--color-ink-soft);
  padding: 2.5rem 0;
  font-size: 0.95rem;
}

.no-results.visible { display: block; }

/* =========================================================
   CTA STRIP
   ========================================================= */

.cta-strip {
  background: var(--color-primary);
  padding: clamp(2.25rem, 4vw, 3rem) 0;
}

.cta-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.cta-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.2rem, 2.5vw, 1.55rem);
  color: #fff;
  margin-bottom: 0.35rem;
}

.cta-sub { color: rgba(255,255,255,0.8); font-size: 0.9rem; }

.cta-btn {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  background: #fff;
  color: var(--color-primary-dark);
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.92rem;
  white-space: nowrap;
  transition: transform 0.15s ease;
}

.cta-btn:hover { transform: translateY(-2px); }

/* =========================================================
   FOOTER
   ========================================================= */

.site-footer { padding: clamp(1.5rem, 3vw, 2rem) 0; }

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--color-ink-soft);
}

.footer-inner a { color: var(--color-primary-dark); font-weight: 600; }

/* =========================================================
   FADE-IN ON SCROLL (subtle, respects reduced motion)
   ========================================================= */

@media (prefers-reduced-motion: no-preference) {
  .post-card, .featured-post {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 0.5s ease, transform 0.5s ease;
  }
  .post-card.in-view, .featured-post.in-view {
    opacity: 1;
    transform: translateY(0);
  }
}