/* =========================================================
   TECHPULSE — MAIN STYLESHEET
   Design language: soft gradients, floating 3D-style shapes,
   glassy cards, generous whitespace, rounded geometry.
   ========================================================= */

:root{
  --gradient-1: #6C5CE7;
  --gradient-2: #00B4D8;
  --gradient-3: #FF6FB3;
  --gradient-accent: linear-gradient(135deg, var(--gradient-1) 0%, var(--gradient-2) 100%);
  --gradient-warm: linear-gradient(135deg, #FF9A8B 0%, #FF6FB3 55%, #6C5CE7 100%);
  --gradient-soft-bg: linear-gradient(180deg, #F6F5FF 0%, #EEF7FF 45%, #FFFFFF 100%);

  --ink: #171A2B;
  --ink-soft: #4B4F6B;
  --muted: #7C81A0;
  --line: #E7E7F5;
  --surface: #FFFFFF;
  --surface-alt: #F7F7FD;

  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;

  --shadow-soft: 0 20px 45px -20px rgba(76, 66, 160, 0.28);
  --shadow-float: 0 30px 60px -25px rgba(56, 45, 140, 0.35);
  --shadow-card: 0 10px 30px -12px rgba(35, 30, 80, 0.15);

  --container: 1180px;
  --font-body: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* ---------- Reset & base ---------- */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--gradient-soft-bg);
  line-height: 1.7;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; height:auto; display:block; }
a{ color: var(--gradient-1); text-decoration:none; transition: color .2s ease; }
a:hover{ color: var(--gradient-3); }
h1,h2,h3,h4,h5,h6{
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.25;
  font-weight: 800;
  margin: 0 0 .6em;
  letter-spacing: -0.02em;
}
p{ margin: 0 0 1.3em; }
ul,ol{ padding-left: 1.3em; }
.container{ max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.screen-reader-text{ position:absolute !important; clip:rect(1px,1px,1px,1px); overflow:hidden; height:1px; width:1px; }
button, input, select, textarea{ font-family: inherit; font-size: 1rem; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding: 14px 28px;
  border-radius: 100px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: var(--shadow-soft);
  transition: transform .25s ease, box-shadow .25s ease;
}
.btn:hover{ transform: translateY(-3px); color:#fff; box-shadow: var(--shadow-float); }
.btn.btn-ghost{
  background: transparent;
  color: var(--ink);
  border: 2px solid var(--line);
  box-shadow: none;
}
.btn.btn-ghost:hover{ border-color: var(--gradient-1); color: var(--gradient-1); }

/* ---------- Site header ---------- */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: rgba(255,255,255,0.75);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; padding: 18px 24px; gap: 24px; }
.site-branding{ display:flex; align-items:center; gap:12px; }
.site-branding .custom-logo-link img{ border-radius: 14px; }
.site-title{ font-size: 1.5rem; margin:0; }
.site-title a{ color: var(--ink); }
.site-description{ margin:0; font-size:.85rem; color: var(--muted); }

.primary-navigation ul{ list-style:none; display:flex; gap: 6px; margin:0; padding:0; }
.primary-navigation li{ position:relative; }
.primary-navigation a{
  display:block; padding: 10px 16px; border-radius: 100px; color: var(--ink-soft); font-weight:600; font-size:.96rem;
}
.primary-navigation a:hover, .primary-navigation .current-menu-item > a{
  background: var(--surface-alt); color: var(--gradient-1);
}
.primary-navigation ul ul{
  display:none; position:absolute; top:100%; left:0; min-width:220px;
  background:#fff; border-radius: var(--radius-sm); box-shadow: var(--shadow-card); padding:8px; flex-direction:column; border:1px solid var(--line);
}
.primary-navigation li:hover > ul{ display:flex; }

.menu-toggle{
  display:none; background: var(--gradient-accent); border:none; color:#fff; width:46px; height:46px;
  border-radius: 14px; align-items:center; justify-content:center; cursor:pointer;
}
.header-cta{ display:flex; align-items:center; gap:14px; }

/* ---------- Hero / 3D illustration blocks ---------- */
.hero{
  position:relative; overflow:hidden;
  padding: 90px 24px 110px;
}
.hero-inner{
  max-width: var(--container); margin:0 auto;
  display:grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items:center;
}
.hero-eyebrow{
  display:inline-flex; align-items:center; gap:8px; padding:8px 16px; border-radius:100px;
  background: var(--surface); box-shadow: var(--shadow-card); font-weight:700; font-size:.82rem; color: var(--gradient-1);
  margin-bottom: 22px;
}
.hero h1{ font-size: clamp(2.2rem, 4vw, 3.4rem); }
.hero-lede{ font-size: 1.15rem; color: var(--ink-soft); max-width: 46ch; }
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; margin-top: 20px; }

.blob-shape{
  position:absolute; border-radius: 45% 55% 60% 40% / 50% 40% 60% 50%;
  background: var(--gradient-accent); filter: blur(0px); opacity:.9;
  animation: float 8s ease-in-out infinite;
}
.blob-1{ width:260px; height:260px; top:-60px; right:-40px; opacity:.35; }
.blob-2{ width:160px; height:160px; bottom:20px; left:10%; background: var(--gradient-warm); opacity:.25; animation-delay: -3s; }
@keyframes float{
  0%,100%{ transform: translateY(0) rotate(0deg); }
  50%{ transform: translateY(-18px) rotate(8deg); }
}

.illustration-3d{
  position:relative; width:100%; aspect-ratio: 4/3.1; display:flex; align-items:center; justify-content:center;
}
.illustration-3d svg{ width:100%; height:100%; filter: drop-shadow(0 30px 40px rgba(60,50,150,.25)); }

/* ---------- Section wrapper ---------- */
.section{ padding: 70px 24px; }
.section-head{ text-align:center; max-width: 640px; margin: 0 auto 46px; }
.section-head .eyebrow{ color: var(--gradient-1); font-weight:800; text-transform:uppercase; letter-spacing:.08em; font-size:.8rem; }
.section-head p{ color: var(--muted); }

/* ---------- Category pills ---------- */
.category-grid{ display:grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); gap: 20px; }
.category-card{
  background:#fff; border-radius: var(--radius-md); padding: 26px 22px; box-shadow: var(--shadow-card);
  border: 1px solid var(--line); transition: transform .25s ease, box-shadow .25s ease;
}
.category-card:hover{ transform: translateY(-6px); box-shadow: var(--shadow-float); }
.category-icon{
  width:52px; height:52px; border-radius:16px; display:flex; align-items:center; justify-content:center;
  background: var(--gradient-accent); color:#fff; margin-bottom:16px; box-shadow: var(--shadow-soft);
}
.category-card h3{ font-size:1.05rem; margin-bottom:4px; }
.category-card .count{ color: var(--muted); font-size:.85rem; }

/* ---------- Post cards / grid ---------- */
.post-grid{ display:grid; grid-template-columns: repeat(auto-fill, minmax(310px,1fr)); gap: 30px; }
.post-card{
  background:#fff; border-radius: var(--radius-md); overflow:hidden; box-shadow: var(--shadow-card);
  border: 1px solid var(--line); display:flex; flex-direction:column; transition: transform .25s ease, box-shadow .25s ease;
}
.post-card:hover{ transform: translateY(-6px); box-shadow: var(--shadow-float); }
.post-card .thumb{ aspect-ratio: 16/10; background: var(--gradient-accent); position:relative; overflow:hidden; }
.post-card .thumb img{ width:100%; height:100%; object-fit:cover; }
.post-card .thumb .placeholder-svg{ width:100%; height:100%; }
.post-card .card-body{ padding: 22px 22px 26px; display:flex; flex-direction:column; gap:10px; flex:1; }
.post-card .cat-tag{
  align-self:flex-start; font-size:.72rem; font-weight:800; text-transform:uppercase; letter-spacing:.06em;
  color: var(--gradient-1); background: rgba(108,92,231,.09); padding: 6px 12px; border-radius:100px;
}
.post-card h2, .post-card h3{ font-size:1.15rem; margin-bottom:0; }
.post-card .excerpt{ color: var(--ink-soft); font-size:.95rem; margin-bottom:0; }
.post-meta{ display:flex; align-items:center; gap:10px; color: var(--muted); font-size:.8rem; margin-top:auto; }
.post-meta img.avatar{ width:26px; height:26px; border-radius:50%; }

.featured-post{
  display:grid; grid-template-columns: 1.1fr .9fr; gap:0; background:#fff; border-radius: var(--radius-lg);
  overflow:hidden; box-shadow: var(--shadow-float); border:1px solid var(--line); margin-bottom: 50px;
}
.featured-post .thumb{ background: var(--gradient-warm); min-height: 320px; position:relative; }
.featured-post .card-body{ padding: 42px; display:flex; flex-direction:column; justify-content:center; gap:14px; }
.featured-post h2{ font-size: 1.8rem; }

/* ---------- Content / single post ---------- */
.content-wrap{ max-width: var(--container); margin: 40px auto; padding: 0 24px; display:grid; grid-template-columns: 1fr 340px; gap: 50px; align-items:start; }
.content-wrap.full-width{ grid-template-columns: 1fr; max-width: 880px; }
article.single-post{ background:#fff; border-radius: var(--radius-lg); padding: 46px; box-shadow: var(--shadow-card); border:1px solid var(--line); }
.single-post .entry-header{ margin-bottom: 28px; }
.single-post .entry-title{ font-size: clamp(1.8rem,3.4vw,2.6rem); }
.single-post .entry-thumbnail{ border-radius: var(--radius-md); overflow:hidden; margin: 24px 0 32px; box-shadow: var(--shadow-card); }
.entry-content h2{ font-size:1.5rem; margin-top:1.6em; }
.entry-content h3{ font-size:1.2rem; margin-top:1.4em; }
.entry-content blockquote{
  margin: 28px 0; padding: 22px 26px; border-radius: var(--radius-sm); background: var(--surface-alt);
  border-left: 5px solid var(--gradient-1); font-style: italic; color: var(--ink-soft);
}
.entry-content pre{ background:#171A2B; color:#F1F1FB; padding:20px; border-radius: var(--radius-sm); overflow:auto; }
.entry-content code{ background: var(--surface-alt); padding:2px 6px; border-radius:6px; font-size:.92em; }
.entry-content ul li, .entry-content ol li{ margin-bottom:.5em; }
.entry-footer{ margin-top: 34px; padding-top: 24px; border-top:1px solid var(--line); display:flex; flex-wrap:wrap; gap:10px; align-items:center; justify-content:space-between; }
.tag-list a{ background: var(--surface-alt); padding:6px 14px; border-radius:100px; font-size:.82rem; margin-right:6px; color: var(--ink-soft); }
.tag-list a:hover{ color: var(--gradient-1); }

.author-box{
  display:flex; gap:20px; background: var(--surface-alt); border-radius: var(--radius-md); padding: 28px;
  margin-top: 36px; align-items:flex-start;
}
.author-box img{ border-radius:50%; width:72px; height:72px; }
.author-box h4{ margin-bottom:4px; }

.post-nav{ display:flex; justify-content:space-between; gap:20px; margin-top:36px; }
.post-nav a{ background:#fff; border:1px solid var(--line); border-radius: var(--radius-sm); padding:16px 20px; flex:1; box-shadow: var(--shadow-card); }
.post-nav .nav-label{ display:block; font-size:.75rem; text-transform:uppercase; color:var(--muted); margin-bottom:4px; }

/* ---------- Sidebar / widgets ---------- */
.widget{ background:#fff; border-radius: var(--radius-md); padding: 26px; margin-bottom: 26px; box-shadow: var(--shadow-card); border:1px solid var(--line); }
.widget-title{ font-size:1rem; text-transform:uppercase; letter-spacing:.05em; margin-bottom:18px; position:relative; padding-bottom:10px; }
.widget-title::after{ content:""; position:absolute; left:0; bottom:0; width:40px; height:3px; border-radius:3px; background: var(--gradient-accent); }
.widget ul{ list-style:none; padding:0; margin:0; }
.widget ul li{ padding: 10px 0; border-bottom:1px dashed var(--line); font-size:.94rem; }
.widget ul li:last-child{ border-bottom:none; }
.widget_search .search-form{ display:flex; gap:8px; }
.widget_search input[type="search"]{ flex:1; padding:12px 14px; border-radius:12px; border:1px solid var(--line); }
.widget_search button{ background: var(--gradient-accent); color:#fff; border:none; padding:0 16px; border-radius:12px; cursor:pointer; }

/* ---------- Comments ---------- */
.comments-area{ margin-top: 40px; background:#fff; border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-card); border:1px solid var(--line); }
.comment-list{ list-style:none; margin:0; padding:0; }
.comment-list .children{ list-style:none; margin-left: 40px; padding:0; }
.comment-body{ padding: 20px 0; border-bottom:1px solid var(--line); display:flex; gap:16px; }
.comment-body .avatar{ border-radius:50%; }
.comment-form input, .comment-form textarea{ width:100%; padding:14px; border-radius:12px; border:1px solid var(--line); margin-bottom:16px; }
.comment-form label{ font-weight:600; display:block; margin-bottom:6px; font-size:.9rem; }

/* ---------- Pagination ---------- */
.pagination{ display:flex; gap:8px; justify-content:center; margin: 40px 0; flex-wrap:wrap; }
.pagination a, .pagination span{
  display:inline-flex; align-items:center; justify-content:center; min-width:42px; height:42px; padding: 0 12px;
  border-radius:12px; background:#fff; border:1px solid var(--line); color: var(--ink-soft); font-weight:600;
}
.pagination .current{ background: var(--gradient-accent); color:#fff; border:none; }

/* ---------- CTA / Newsletter band ---------- */
.newsletter-band{
  background: var(--gradient-accent); border-radius: var(--radius-lg); padding: 56px; text-align:center; color:#fff;
  position:relative; overflow:hidden; margin: 20px auto;
}
.newsletter-band h2{ color:#fff; }
.newsletter-band p{ color: rgba(255,255,255,.85); max-width: 46ch; margin: 0 auto 26px; }
.newsletter-form{ display:flex; gap:10px; max-width:460px; margin:0 auto; }
.newsletter-form input{ flex:1; padding:14px 18px; border-radius:100px; border:none; }
.newsletter-form button{ background: var(--ink); color:#fff; border:none; padding: 0 26px; border-radius:100px; font-weight:700; cursor:pointer; }

/* ---------- Footer ---------- */
.site-footer{ background: var(--ink); color: rgba(255,255,255,.75); margin-top: 60px; }
.footer-grid{ display:grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 40px; padding: 70px 24px 40px; max-width: var(--container); margin:0 auto; }
.footer-grid h4{ color:#fff; font-size: .95rem; text-transform:uppercase; letter-spacing:.05em; margin-bottom:18px; }
.site-footer a{ color: rgba(255,255,255,.65); }
.site-footer a:hover{ color:#fff; }
.footer-grid ul{ list-style:none; padding:0; margin:0; }
.footer-grid ul li{ margin-bottom:10px; }
.footer-brand p{ color: rgba(255,255,255,.6); max-width:36ch; }
.social-row{ display:flex; gap:10px; margin-top:16px; }
.social-row a{ width:38px; height:38px; border-radius:50%; background: rgba(255,255,255,.08); display:flex; align-items:center; justify-content:center; }
.footer-bottom{ border-top:1px solid rgba(255,255,255,.1); padding: 22px 24px; text-align:center; font-size:.85rem; }
.footer-bottom a{ color:#fff; font-weight:600; }

/* ---------- 404 / empty states ---------- */
.error-404{ text-align:center; padding: 90px 24px; }
.error-404 .illustration-3d{ max-width:380px; margin: 0 auto 30px; }

/* ---------- Utility ---------- */
.text-center{ text-align:center; }
.mt-0{ margin-top:0; } .mb-0{ margin-bottom:0; }

/* ---------- Responsive ---------- */
@media (max-width: 960px){
  .hero-inner{ grid-template-columns:1fr; }
  .content-wrap{ grid-template-columns:1fr; }
  .featured-post{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 700px){
  .primary-navigation{ display:none; position:absolute; top:100%; left:0; right:0; background:#fff; padding:16px; box-shadow: var(--shadow-card); }
  .primary-navigation.is-open{ display:block; }
  .primary-navigation ul{ flex-direction:column; }
  .primary-navigation ul ul{ position:static; box-shadow:none; border:none; display:block; padding-left:14px; }
  .menu-toggle{ display:flex; }
  .footer-grid{ grid-template-columns:1fr; }
  article.single-post{ padding: 28px; }
  .newsletter-form{ flex-direction:column; }
}