/* Blog — Unity IT Design System */
:root {
  --navy:     #0B1B4D;
  --navy2:    #142560;
  --cyan:     #1FC4E5;
  --cyan2:    #13A8C6;
  --cyan-soft:#E6F8FC;
  --ink:      #0A1330;
  --ink-700:  #2A3558;
  --ink-600:  #4A5578;
  --ink-500:  #6B7699;
  --ink-300:  #C8CEE0;
  --ink-200:  #E4E7F0;
  --ink-100:  #F1F3F8;
  --ink-50:   #F8F9FC;
  --white:    #FFFFFF;
  --ok:       #10A37F;
  --font:     "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max-w:    1200px;
  --prose-w:  740px;
  --r:        10px;
}

*, *::before, *::after { box-sizing: border-box; }
html { overflow-x: hidden; }
body {
  margin: 0; padding: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ── Header ─────────────────────────────────────────────────────── */
.site-header {
  background: var(--navy);
  border-bottom: 2px solid var(--cyan);
  position: sticky; top: 0; z-index: 100;
}
.site-header .inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.site-header .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--white);
  white-space: nowrap;
}
.site-header .logo span { color: var(--cyan); }
.site-header nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.site-header nav a {
  color: rgba(255,255,255,.75);
  font-size: 14px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 6px;
  transition: background .15s, color .15s;
}
.site-header nav a:hover,
.site-header nav a.active {
  background: rgba(31,196,229,.12);
  color: var(--cyan);
}
.site-header nav .btn-contact {
  background: var(--cyan);
  color: var(--navy);
  font-weight: 700;
  border-radius: 6px;
  padding: 6px 14px;
}
.site-header nav .btn-contact:hover { background: var(--cyan2); color: var(--white); }

/* ── Breadcrumb ─────────────────────────────────────────────────── */
.breadcrumb {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--ink-500);
}
.breadcrumb a { color: var(--ink-600); }
.breadcrumb a:hover { color: var(--cyan2); }
.breadcrumb .sep { color: var(--ink-300); }

/* ── Hero (article) ─────────────────────────────────────────────── */
.article-hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy2) 100%);
  color: var(--white);
  padding: 56px 24px 52px;
}
.article-hero .inner {
  max-width: var(--prose-w);
  margin: 0 auto;
}
.article-hero .tag {
  display: inline-block;
  background: rgba(31,196,229,.15);
  color: var(--cyan);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 16px;
}
.article-hero h1 {
  margin: 0 0 16px;
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.02em;
}
.article-hero .meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: rgba(255,255,255,.65);
  flex-wrap: wrap;
}
.article-hero .meta strong { color: rgba(255,255,255,.9); }

/* ── Article body ───────────────────────────────────────────────── */
.article-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 48px 24px 80px;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  align-items: start;
}
.prose {
  max-width: var(--prose-w);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-700);
}
.prose h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--navy);
  margin: 40px 0 12px;
  letter-spacing: -.02em;
}
.prose h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--navy);
  margin: 28px 0 8px;
}
.prose p { margin: 0 0 18px; }
.prose ul, .prose ol { margin: 0 0 18px; padding-left: 24px; }
.prose li { margin-bottom: 8px; }
.prose strong { color: var(--ink); font-weight: 600; }
.prose a { color: var(--cyan2); text-decoration: underline; }
.prose a:hover { color: var(--navy); }

.prose .tip {
  background: var(--cyan-soft);
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--r) var(--r) 0;
  padding: 14px 18px;
  margin: 24px 0;
  font-size: 15px;
  color: var(--navy);
}
.prose .tip strong { color: var(--cyan2); }

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.prose table th {
  background: var(--navy);
  color: var(--white);
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
}
.prose table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--ink-200);
  color: var(--ink-700);
}
.prose table tr:nth-child(even) td { background: var(--ink-50); }

/* ── Sidebar ────────────────────────────────────────────────────── */
.sidebar { position: sticky; top: 76px; }
.sidebar-card {
  background: var(--navy);
  color: var(--white);
  border-radius: var(--r);
  padding: 24px;
  margin-bottom: 20px;
}
.sidebar-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--cyan);
}
.sidebar-card p {
  font-size: 14px;
  color: rgba(255,255,255,.75);
  margin: 0 0 16px;
  line-height: 1.5;
}
.sidebar-card .btn {
  display: block;
  background: var(--cyan);
  color: var(--navy);
  text-align: center;
  font-weight: 700;
  font-size: 14px;
  padding: 10px 16px;
  border-radius: 6px;
  margin-bottom: 8px;
  transition: background .15s;
}
.sidebar-card .btn:hover { background: var(--cyan2); color: var(--white); }
.sidebar-card .btn-ghost {
  display: block;
  border: 1px solid rgba(255,255,255,.2);
  color: rgba(255,255,255,.8);
  text-align: center;
  font-size: 13px;
  font-weight: 500;
  padding: 9px 16px;
  border-radius: 6px;
  transition: border-color .15s, color .15s;
}
.sidebar-card .btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }

.sidebar-related { background: var(--ink-50); border-radius: var(--r); padding: 20px; }
.sidebar-related h3 { font-size: 14px; font-weight: 700; color: var(--navy); margin: 0 0 12px; text-transform: uppercase; letter-spacing: .05em; }
.sidebar-related ul { list-style: none; margin: 0; padding: 0; }
.sidebar-related li { border-bottom: 1px solid var(--ink-200); }
.sidebar-related li:last-child { border-bottom: none; }
.sidebar-related a {
  display: block;
  padding: 10px 0;
  font-size: 14px;
  color: var(--ink-700);
  line-height: 1.4;
  transition: color .15s;
}
.sidebar-related a:hover { color: var(--cyan2); }

/* ── CTA bottom ─────────────────────────────────────────────────── */
.cta-banner {
  background: linear-gradient(135deg, var(--navy) 0%, #1a2e6e 100%);
  color: var(--white);
  text-align: center;
  padding: 56px 24px;
}
.cta-banner h2 { font-size: 26px; font-weight: 800; margin: 0 0 10px; }
.cta-banner p { font-size: 16px; color: rgba(255,255,255,.75); margin: 0 0 28px; }
.cta-banner .btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.cta-banner .btn-primary {
  background: var(--cyan);
  color: var(--navy);
  font-weight: 700;
  font-size: 15px;
  padding: 12px 28px;
  border-radius: 8px;
  transition: background .15s;
}
.cta-banner .btn-primary:hover { background: var(--cyan2); color: var(--white); }
.cta-banner .btn-outline {
  border: 1px solid rgba(255,255,255,.3);
  color: rgba(255,255,255,.9);
  font-size: 15px;
  padding: 12px 28px;
  border-radius: 8px;
  transition: border-color .15s;
}
.cta-banner .btn-outline:hover { border-color: var(--cyan); color: var(--cyan); }

/* ── Blog index ─────────────────────────────────────────────────── */
.blog-hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy2) 100%);
  color: var(--white);
  text-align: center;
  padding: 64px 24px 56px;
}
.blog-hero h1 { font-size: clamp(28px, 5vw, 44px); font-weight: 800; margin: 0 0 12px; letter-spacing: -.03em; }
.blog-hero p { font-size: 17px; color: rgba(255,255,255,.72); margin: 0 auto; max-width: 520px; }

.blog-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 48px 24px 80px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}
.post-card {
  border: 1px solid var(--ink-200);
  border-radius: var(--r);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow .2s, transform .2s;
  background: var(--white);
}
.post-card:hover {
  box-shadow: 0 12px 32px rgba(10,19,48,.10);
  transform: translateY(-2px);
}
.post-card-thumb {
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 52px;
}
.post-card-body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; }
.post-card-tag {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--cyan2);
  margin-bottom: 8px;
}
.post-card-body h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 10px;
  line-height: 1.3;
  letter-spacing: -.01em;
}
.post-card-body p {
  font-size: 14px;
  color: var(--ink-600);
  margin: 0 0 18px;
  line-height: 1.55;
  flex: 1;
}
.post-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--ink-500);
}
.post-card-meta .read-more {
  color: var(--cyan2);
  font-weight: 600;
  font-size: 13px;
}
.post-card-meta .read-more:hover { color: var(--navy); }

/* ── Footer ─────────────────────────────────────────────────────── */
.site-footer {
  background: var(--ink-100);
  border-top: 1px solid var(--ink-200);
  text-align: center;
  padding: 24px;
  font-size: 13px;
  color: var(--ink-500);
}
.site-footer a { color: var(--cyan2); margin: 0 8px; }
.site-footer a:hover { color: var(--navy); }

/* ── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .article-wrap { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}
@media (max-width: 600px) {
  .site-header nav a:not(.btn-contact) { display: none; }
  .article-hero { padding: 40px 16px 36px; }
  .article-wrap { padding: 32px 16px 60px; }
  .blog-grid { padding: 32px 16px 60px; gap: 20px; }
}


/* WhatsApp FAB */
.wa-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(37,211,102,.45);
  transition: transform .15s, box-shadow .15s;
}
.wa-fab:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 24px rgba(37,211,102,.55);
}
.wa-fab svg { display: block; }