/* ============================================================
   TechUET — Main Stylesheet
   Light theme · Sora + Lora typography · Mobile-first
   ============================================================ */

/* ── Custom Properties ───────────────────────────────────── */
:root {
  /* Brand */
  --clr-primary:       #0A63F0;
  --clr-primary-dark:  #0550CC;
  --clr-primary-light: #EBF2FF;
  --clr-accent:        #F5A623;
  --clr-accent-dark:   #D4891A;

  /* Neutrals */
  --clr-bg:            #FAFBFC;
  --clr-surface:       #FFFFFF;
  --clr-surface-alt:   #F3F5F8;
  --clr-border:        #E2E6EC;
  --clr-border-light:  #EFF1F5;

  /* Text */
  --clr-text:          #111827;
  --clr-text-muted:    #6B7280;
  --clr-text-light:    #9CA3AF;
  --clr-heading:       #0D1117;

  /* Category colors */
  --cat-cyber:    #EF4444;
  --cat-ai:       #8B5CF6;
  --cat-trends:   #0A63F0;
  --cat-apps:     #10B981;
  --cat-society:  #F59E0B;

  /* Typography */
  --font-sans:   'Sora', system-ui, sans-serif;
  --font-serif:  'Lora', Georgia, serif;

  /* Spacing scale */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.25rem;
  --sp-6: 1.5rem;
  --sp-8: 2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;

  /* Radius */
  --radius-sm:  6px;
  --radius:     12px;
  --radius-lg:  18px;
  --radius-xl:  24px;
  --radius-full: 999px;

  /* Shadow */
  --shadow-sm:  0 1px 3px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.05);
  --shadow:     0 4px 16px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.05);
  --shadow-md:  0 8px 30px rgba(0,0,0,.10), 0 4px 8px rgba(0,0,0,.06);
  --shadow-lg:  0 20px 60px rgba(0,0,0,.13);

  /* Transition */
  --transition: 220ms ease;

  /* Layout */
  --container-max: 1200px;
  --container-pad: clamp(1rem, 4vw, 2rem);
  --header-h: 64px;
}

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--clr-text);
  background: var(--clr-bg);
  -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, textarea, select { font: inherit; border: none; background: none; }
button { cursor: pointer; }
h1,h2,h3,h4,h5,h6 { color: var(--clr-heading); line-height: 1.25; font-weight: 700; }

/* ── Accessibility ───────────────────────────────────────── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; top: -100px; left: 1rem;
  background: var(--clr-primary); color: #fff;
  padding: var(--sp-2) var(--sp-4);
  border-radius: var(--radius);
  font-weight: 600; z-index: 9999;
  transition: top var(--transition);
}
.skip-link:focus { top: 1rem; }
:focus-visible { outline: 3px solid var(--clr-primary); outline-offset: 3px; }

/* ── Layout Utilities ────────────────────────────────────── */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}
.section { padding-block: var(--sp-16); }
.section-sm { padding-block: var(--sp-10); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-5); }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-full);
  font-weight: 600; font-size: 0.875rem;
  transition: all var(--transition);
  white-space: nowrap;
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--clr-primary); color: #fff;
  border-color: var(--clr-primary);
}
.btn-primary:hover {
  background: var(--clr-primary-dark);
  border-color: var(--clr-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(10,99,240,.3);
}
.btn-outline {
  background: transparent; color: var(--clr-primary);
  border-color: var(--clr-primary);
}
.btn-outline:hover {
  background: var(--clr-primary-light);
  transform: translateY(-1px);
}
.btn-sm { padding: 0.4rem 0.9rem; font-size: 0.8125rem; }
.btn-lg { padding: 0.875rem 1.75rem; font-size: 1rem; }
.btn-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: var(--radius-full);
  color: var(--clr-text-muted); transition: all var(--transition);
}
.btn-icon:hover { background: var(--clr-surface-alt); color: var(--clr-primary); }

/* ── Section Headers ─────────────────────────────────────── */
.section-header {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: var(--sp-8); gap: var(--sp-4);
}
.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  position: relative; padding-bottom: var(--sp-3);
}
.section-title::after {
  content: '';
  position: absolute; bottom: 0; left: 0;
  width: 48px; height: 3px;
  background: var(--clr-primary); border-radius: 2px;
}

/* ── HEADER ──────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 500;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border-light);
  box-shadow: var(--shadow-sm);
  height: var(--header-h);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 100%; gap: var(--sp-6);
}
.logo {
  display: flex; align-items: center; gap: var(--sp-2);
  font-size: 1.35rem; font-weight: 800; color: var(--clr-heading);
  letter-spacing: -0.03em; flex-shrink: 0;
}
.logo-mark {
  font-size: 1.5rem;
  filter: drop-shadow(0 0 4px rgba(245,166,35,.6));
}
.logo:hover { color: var(--clr-primary); }

/* Main Nav */
.main-nav { display: flex; align-items: center; }
.nav-list {
  display: flex; align-items: center; gap: var(--sp-1);
}
.nav-list > li { position: relative; }
.nav-list > li > a,
.nav-dropdown-btn {
  display: flex; align-items: center; gap: 4px;
  padding: var(--sp-2) var(--sp-3);
  font-size: 0.875rem; font-weight: 500;
  color: var(--clr-text-muted); border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.nav-list > li > a:hover,
.nav-list > li > a[aria-current="page"],
.nav-dropdown-btn:hover {
  color: var(--clr-primary); background: var(--clr-primary-light);
}
.nav-dropdown-btn { background: none; }
.chevron { font-size: 0.7rem; transition: transform var(--transition); }
.has-dropdown:hover .chevron, .has-dropdown.open .chevron { transform: rotate(180deg); }

/* Dropdown */
.dropdown-menu {
  position: absolute; top: calc(100% + 8px); left: 50%;
  transform: translateX(-50%);
  min-width: 220px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: var(--sp-2);
  opacity: 0; pointer-events: none;
  transform: translateX(-50%) translateY(-8px);
  transition: opacity var(--transition), transform var(--transition);
}
.has-dropdown:hover .dropdown-menu,
.has-dropdown:focus-within .dropdown-menu {
  opacity: 1; pointer-events: all;
  transform: translateX(-50%) translateY(0);
}
.dropdown-menu li a {
  display: block;
  padding: var(--sp-2) var(--sp-4);
  font-size: 0.875rem; font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.dropdown-menu li a:hover { background: var(--clr-primary-light); color: var(--clr-primary); }

/* Header Actions */
.header-actions { display: flex; align-items: center; gap: var(--sp-2); }

/* Hamburger */
.hamburger {
  display: none; flex-direction: column; gap: 5px;
  padding: 6px; border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.hamburger:hover { background: var(--clr-surface-alt); }
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--clr-text); border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Nav */
.mobile-nav {
  position: absolute; top: var(--header-h); left: 0; right: 0;
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
  box-shadow: var(--shadow-md);
  padding: var(--sp-4) var(--container-pad) var(--sp-6);
}
.mobile-nav[hidden] { display: none; }
.mobile-nav-list { display: flex; flex-direction: column; gap: var(--sp-1); }
.mobile-nav-list li a {
  display: block; padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius-sm);
  font-weight: 500; transition: all var(--transition);
}
.mobile-nav-list li a:hover { background: var(--clr-primary-light); color: var(--clr-primary); }
.mobile-section-label {
  font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .08em;
  color: var(--clr-text-light); padding: var(--sp-3) var(--sp-4) var(--sp-1);
}

/* ── HERO ────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, #F0F5FF 0%, #FAFBFC 60%, #FFF8ED 100%);
  padding-block: clamp(3rem, 8vw, 5rem);
  overflow: hidden;
  position: relative;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image: radial-gradient(circle at 20% 50%, rgba(10,99,240,.06) 0%, transparent 50%),
                    radial-gradient(circle at 80% 20%, rgba(245,166,35,.07) 0%, transparent 50%);
  pointer-events: none;
}
.hero-inner {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--sp-12); align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  background: var(--clr-primary-light); color: var(--clr-primary);
  padding: var(--sp-1) var(--sp-3); border-radius: var(--radius-full);
  font-size: 0.8125rem; font-weight: 600; margin-bottom: var(--sp-5);
  border: 1px solid rgba(10,99,240,.15);
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.15; letter-spacing: -0.03em;
  margin-bottom: var(--sp-5);
}
.hero-title em { font-style: normal; color: var(--clr-primary); }
.hero-desc {
  font-size: 1.125rem; color: var(--clr-text-muted);
  line-height: 1.7; max-width: 50ch; margin-bottom: var(--sp-8);
}
.hero-actions { display: flex; gap: var(--sp-3); flex-wrap: wrap; }
.hero-stats {
  display: flex; gap: var(--sp-8); margin-top: var(--sp-10);
}
.hero-stat-num {
  display: block; font-size: 1.75rem; font-weight: 800;
  color: var(--clr-heading); letter-spacing: -0.04em;
}
.hero-stat-label { font-size: 0.8125rem; color: var(--clr-text-muted); }

.hero-visual {
  position: relative; display: flex; justify-content: center;
}
.hero-card-stack {
  position: relative; width: 100%; max-width: 420px;
}
.hero-main-card {
  background: var(--clr-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid var(--clr-border-light);
}
.hero-main-card-img {
  width: 100%; aspect-ratio: 16/9; object-fit: cover;
}
.hero-main-card-body { padding: var(--sp-5); }
.hero-main-card-cat {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .07em; color: var(--clr-primary); margin-bottom: var(--sp-2);
}
.hero-main-card-title {
  font-size: 1.1rem; line-height: 1.4; margin-bottom: var(--sp-3);
}
.hero-main-card-meta { font-size: 0.8125rem; color: var(--clr-text-muted); }

.hero-floating-card {
  position: absolute; bottom: -20px; left: -30px;
  background: var(--clr-surface); border-radius: var(--radius);
  padding: var(--sp-3) var(--sp-4);
  box-shadow: var(--shadow-md); border: 1px solid var(--clr-border-light);
  display: flex; align-items: center; gap: var(--sp-3);
  max-width: 200px; animation: float 4s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
.hfc-icon { font-size: 1.75rem; }
.hfc-label { font-size: 0.8rem; font-weight: 600; color: var(--clr-text); }
.hfc-sub { font-size: 0.7rem; color: var(--clr-text-muted); }

/* ── ARTICLE CARDS ───────────────────────────────────────── */
.card {
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--clr-border-light);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex; flex-direction: column;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.card-img-link { display: block; overflow: hidden; }
.card-img-wrap {
  position: relative; overflow: hidden;
  aspect-ratio: 16/9; background: var(--clr-surface-alt);
}
.card-img-wrap img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 400ms ease;
}
.card:hover .card-img-wrap img { transform: scale(1.04); }
.card-icon {
  position: absolute; bottom: var(--sp-3); right: var(--sp-3);
  font-size: 1.5rem; background: rgba(255,255,255,.9);
  border-radius: var(--radius-sm); width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-sm);
}
.card-body { padding: var(--sp-5); display: flex; flex-direction: column; gap: var(--sp-3); flex: 1; }
.card-cat {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .07em; color: var(--clr-primary);
  transition: color var(--transition);
}
.card-cat:hover { color: var(--clr-primary-dark); }
.card-title { font-size: 1.05rem; line-height: 1.35; }
.card-title a { transition: color var(--transition); }
.card-title a:hover { color: var(--clr-primary); }
.card-excerpt { font-size: 0.875rem; color: var(--clr-text-muted); line-height: 1.6; flex: 1; }
.card-meta { display: flex; align-items: center; gap: var(--sp-2); font-size: 0.8rem; color: var(--clr-text-light); margin-top: auto; }
.dot { opacity: .5; }

/* Featured card — larger */
.card-featured {
  grid-column: span 2;
  flex-direction: row;
}
.card-featured .card-img-link { flex-shrink: 0; width: 45%; }
.card-featured .card-img-wrap { aspect-ratio: unset; height: 100%; min-height: 240px; }
.card-featured .card-body { padding: var(--sp-8); justify-content: center; gap: var(--sp-4); }
.card-featured .card-title { font-size: 1.4rem; }
.card-featured .card-excerpt { font-size: 0.9375rem; }

/* ── CATEGORIES STRIP ────────────────────────────────────── */
.cat-strip { display: flex; gap: var(--sp-3); flex-wrap: wrap; }
.cat-pill {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  background: var(--clr-surface); border: 1px solid var(--clr-border);
  border-radius: var(--radius-full); font-size: 0.875rem; font-weight: 500;
  color: var(--clr-text-muted); transition: all var(--transition);
}
.cat-pill:hover { background: var(--clr-primary-light); border-color: var(--clr-primary); color: var(--clr-primary); }
.cat-pill.active { background: var(--clr-primary); border-color: var(--clr-primary); color: #fff; }
.cat-count { font-size: 0.7rem; background: var(--clr-surface-alt); color: var(--clr-text-light); padding: 1px 6px; border-radius: var(--radius-full); }
.cat-pill.active .cat-count { background: rgba(255,255,255,.2); color: rgba(255,255,255,.8); }

/* ── NEWSLETTER SECTION ──────────────────────────────────── */
.newsletter-section {
  background: linear-gradient(135deg, var(--clr-primary) 0%, #1A47B8 100%);
  border-radius: var(--radius-xl); color: #fff;
  padding: clamp(2.5rem, 5vw, 4rem);
  text-align: center; position: relative; overflow: hidden;
}
.newsletter-section::before {
  content: '✉️';
  position: absolute; font-size: 12rem; opacity: .04;
  right: -2rem; top: -2rem; pointer-events: none;
}
.newsletter-section h2 { color: #fff; font-size: clamp(1.5rem, 3vw, 2.25rem); margin-bottom: var(--sp-3); }
.newsletter-section p { color: rgba(255,255,255,.8); max-width: 50ch; margin-inline: auto; margin-bottom: var(--sp-6); }
.newsletter-form {
  display: flex; gap: var(--sp-3); max-width: 500px;
  margin-inline: auto; flex-wrap: wrap; justify-content: center;
}
.newsletter-form input[type="email"] {
  flex: 1; min-width: 240px;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-full);
  border: 2px solid rgba(255,255,255,.3);
  background: rgba(255,255,255,.15);
  color: #fff; font-size: 0.9375rem;
  transition: border-color var(--transition);
}
.newsletter-form input[type="email"]::placeholder { color: rgba(255,255,255,.6); }
.newsletter-form input[type="email"]:focus { outline: none; border-color: rgba(255,255,255,.8); }
.newsletter-form .btn-primary {
  background: var(--clr-accent); border-color: var(--clr-accent); color: #fff;
}
.newsletter-form .btn-primary:hover { background: var(--clr-accent-dark); border-color: var(--clr-accent-dark); }
.nl-msg { margin-top: var(--sp-3); font-size: 0.875rem; font-weight: 500; }
.nl-msg.success { color: #6EE7B7; }
.nl-msg.error { color: #FCA5A5; }

/* Footer newsletter */
.footer-newsletter .nl-row { display: flex; gap: var(--sp-2); margin-top: var(--sp-4); }
.footer-newsletter input[type="email"] {
  flex: 1; padding: 0.5rem 0.875rem;
  border: 1px solid var(--clr-border); border-radius: var(--radius-full);
  font-size: 0.875rem; background: var(--clr-bg);
  transition: border-color var(--transition);
}
.footer-newsletter input[type="email"]:focus { outline: none; border-color: var(--clr-primary); }
.footer-newsletter .nl-msg { font-size: 0.8125rem; margin-top: var(--sp-2); }
.footer-newsletter .nl-msg.success { color: #10B981; }
.footer-newsletter .nl-msg.error { color: #EF4444; }

/* ── BREADCRUMBS ─────────────────────────────────────────── */
.breadcrumb {
  display: flex; align-items: center; flex-wrap: wrap; gap: var(--sp-2);
  font-size: 0.8125rem; color: var(--clr-text-muted);
  padding-block: var(--sp-4);
}
.breadcrumb a { color: var(--clr-primary); transition: opacity var(--transition); }
.breadcrumb a:hover { opacity: .8; }
.breadcrumb-sep { color: var(--clr-text-light); }
.breadcrumb [aria-current="page"] { color: var(--clr-text); }

/* ── ARTICLE LAYOUT ──────────────────────────────────────── */
.article-layout {
  display: grid; grid-template-columns: 1fr 320px; gap: var(--sp-10); align-items: start;
}
.article-content { min-width: 0; }
.article-hero-img {
  width: 100%; border-radius: var(--radius-lg);
  margin-bottom: var(--sp-8); aspect-ratio: 16/9; object-fit: cover;
  box-shadow: var(--shadow);
}
.article-header { margin-bottom: var(--sp-8); }
.article-cat { font-size: 0.8125rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--clr-primary); }
.article-title { font-size: clamp(1.75rem, 4vw, 2.5rem); line-height: 1.2; letter-spacing: -0.025em; margin-block: var(--sp-4); }
.article-meta { display: flex; align-items: center; gap: var(--sp-4); font-size: 0.875rem; color: var(--clr-text-muted); flex-wrap: wrap; }
.article-meta time { font-weight: 500; }

.prose { font-family: var(--font-serif); font-size: 1.0625rem; line-height: 1.8; color: var(--clr-text); }
.prose h2 { font-family: var(--font-sans); font-size: 1.5rem; margin-block: var(--sp-8) var(--sp-4); }
.prose h3 { font-family: var(--font-sans); font-size: 1.2rem; margin-block: var(--sp-6) var(--sp-3); }
.prose p { margin-bottom: var(--sp-5); }
.prose ul, .prose ol { margin-left: var(--sp-6); margin-bottom: var(--sp-5); }
.prose li { margin-bottom: var(--sp-2); }
.prose a { color: var(--clr-primary); text-decoration: underline; }
.prose blockquote {
  border-left: 4px solid var(--clr-primary);
  padding: var(--sp-4) var(--sp-6);
  margin-block: var(--sp-6); background: var(--clr-primary-light);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic; color: var(--clr-text-muted);
}
.prose strong { font-weight: 700; color: var(--clr-heading); }
.prose code {
  font-size: 0.875em; background: var(--clr-surface-alt);
  padding: 1px 5px; border-radius: 4px; font-family: monospace;
}

/* Author Box */
.author-box {
  display: flex; gap: var(--sp-5); align-items: flex-start;
  background: var(--clr-surface-alt); border-radius: var(--radius-lg);
  padding: var(--sp-6); margin-top: var(--sp-10); margin-bottom: var(--sp-8);
  border: 1px solid var(--clr-border-light);
}
.author-avatar {
  width: 70px; height: 70px; border-radius: var(--radius-full);
  object-fit: cover; flex-shrink: 0; border: 3px solid var(--clr-primary-light);
}
.author-info h4 { font-size: 1rem; margin-bottom: var(--sp-1); }
.author-label { font-size: 0.8125rem; color: var(--clr-primary); font-weight: 600; margin-bottom: var(--sp-2); }
.author-bio { font-size: 0.875rem; color: var(--clr-text-muted); line-height: 1.6; }

/* Share buttons */
.share-bar {
  display: flex; align-items: center; gap: var(--sp-3);
  padding-block: var(--sp-6);
  border-top: 1px solid var(--clr-border-light);
  border-bottom: 1px solid var(--clr-border-light);
  margin-block: var(--sp-8);
  flex-wrap: wrap;
}
.share-label { font-size: 0.875rem; font-weight: 600; color: var(--clr-text-muted); }
.share-btn {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  border-radius: var(--radius-full); font-size: 0.8125rem; font-weight: 600;
  transition: all var(--transition); border: 1px solid transparent;
}
.share-twitter { background: #E7F5FF; color: #1D9BF0; border-color: #BAE0FF; }
.share-linkedin { background: #EAF3FB; color: #0A66C2; border-color: #BDD6EE; }
.share-copy { background: var(--clr-surface-alt); color: var(--clr-text-muted); border-color: var(--clr-border); }
.share-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }

/* Article Sidebar */
.article-sidebar { display: flex; flex-direction: column; gap: var(--sp-6); position: sticky; top: calc(var(--header-h) + 1.5rem); }
.sidebar-widget {
  background: var(--clr-surface); border: 1px solid var(--clr-border-light);
  border-radius: var(--radius-lg); padding: var(--sp-5); overflow: hidden;
}
.sidebar-widget-title { font-size: 0.875rem; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; color: var(--clr-text-muted); margin-bottom: var(--sp-4); }
.sidebar-post-list { display: flex; flex-direction: column; gap: var(--sp-4); }
.sidebar-post { display: flex; gap: var(--sp-3); align-items: flex-start; }
.sidebar-post-img { width: 64px; height: 64px; border-radius: var(--radius-sm); object-fit: cover; flex-shrink: 0; }
.sidebar-post-title { font-size: 0.8125rem; font-weight: 600; line-height: 1.35; }
.sidebar-post-title a:hover { color: var(--clr-primary); }
.sidebar-post-date { font-size: 0.7rem; color: var(--clr-text-light); margin-top: var(--sp-1); }

/* ── SEARCH ──────────────────────────────────────────────── */
.search-hero {
  background: var(--clr-surface-alt);
  padding-block: var(--sp-12); text-align: center;
}
.search-hero h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); margin-bottom: var(--sp-4); }
.search-form { display: flex; max-width: 600px; margin-inline: auto; gap: var(--sp-3); }
.search-input {
  flex: 1; padding: 0.875rem 1.25rem;
  border: 2px solid var(--clr-border); border-radius: var(--radius-full);
  font-size: 1rem; background: var(--clr-surface);
  transition: border-color var(--transition);
}
.search-input:focus { outline: none; border-color: var(--clr-primary); }

/* ── STATIC PAGES (About, Contact etc) ──────────────────── */
.page-hero {
  background: linear-gradient(135deg, #F0F5FF 0%, #FAFBFC 100%);
  padding-block: var(--sp-16); text-align: center;
}
.page-hero h1 { font-size: clamp(2rem, 5vw, 3rem); margin-bottom: var(--sp-4); }
.page-hero p { font-size: 1.125rem; color: var(--clr-text-muted); max-width: 55ch; margin-inline: auto; }

.prose-page { max-width: 760px; margin-inline: auto; padding-block: var(--sp-16); }
.prose-page h2 { font-size: 1.5rem; margin-block: var(--sp-8) var(--sp-4); }
.prose-page h3 { font-size: 1.2rem; margin-block: var(--sp-6) var(--sp-3); }
.prose-page p { font-size: 1rem; line-height: 1.75; color: var(--clr-text); margin-bottom: var(--sp-5); }
.prose-page ul { margin-left: var(--sp-6); margin-bottom: var(--sp-5); }
.prose-page li { margin-bottom: var(--sp-2); line-height: 1.7; }
.prose-page a { color: var(--clr-primary); text-decoration: underline; }

/* Contact form */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-12); align-items: start; }
.contact-form-wrap { background: var(--clr-surface); border: 1px solid var(--clr-border-light); border-radius: var(--radius-xl); padding: clamp(1.5rem, 4vw, 2.5rem); }
.form-group { margin-bottom: var(--sp-5); }
.form-label { display: block; font-size: 0.875rem; font-weight: 600; margin-bottom: var(--sp-2); }
.form-input, .form-textarea, .form-select {
  width: 100%; padding: 0.75rem 1rem;
  border: 2px solid var(--clr-border); border-radius: var(--radius);
  font-size: 0.9375rem; background: var(--clr-bg);
  transition: border-color var(--transition);
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none; border-color: var(--clr-primary); background: var(--clr-surface);
}
.form-textarea { min-height: 140px; resize: vertical; }
.form-msg {
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius); font-size: 0.9rem; margin-bottom: var(--sp-4); font-weight: 500;
}
.form-msg.success { background: #D1FAE5; color: #065F46; }
.form-msg.error { background: #FEE2E2; color: #991B1B; }
.contact-info h3 { font-size: 1.5rem; margin-bottom: var(--sp-5); }
.contact-info p { color: var(--clr-text-muted); line-height: 1.7; margin-bottom: var(--sp-6); }
.contact-item { display: flex; gap: var(--sp-3); margin-bottom: var(--sp-4); }
.contact-item-icon { font-size: 1.5rem; flex-shrink: 0; }
.contact-item-text strong { display: block; font-size: 0.875rem; margin-bottom: 2px; }
.contact-item-text span { font-size: 0.9rem; color: var(--clr-text-muted); }

/* ── About page ──────────────────────────────────────────── */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-12); align-items: center; }
.about-img { border-radius: var(--radius-xl); box-shadow: var(--shadow-md); }
.value-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-5); margin-top: var(--sp-8); }
.value-card { background: var(--clr-surface); border: 1px solid var(--clr-border-light); border-radius: var(--radius-lg); padding: var(--sp-6); text-align: center; }
.value-card .icon { font-size: 2.5rem; margin-bottom: var(--sp-3); }
.value-card h4 { margin-bottom: var(--sp-2); }
.value-card p { font-size: 0.875rem; color: var(--clr-text-muted); }

/* Team */
.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-6); margin-top: var(--sp-8); }
.team-card { background: var(--clr-surface); border: 1px solid var(--clr-border-light); border-radius: var(--radius-lg); padding: var(--sp-6); text-align: center; }
.team-avatar { width: 80px; height: 80px; border-radius: var(--radius-full); object-fit: cover; margin: 0 auto var(--sp-4); border: 3px solid var(--clr-primary-light); }
.team-card h4 { margin-bottom: var(--sp-1); }
.team-role { font-size: 0.8125rem; color: var(--clr-primary); font-weight: 600; margin-bottom: var(--sp-2); }
.team-bio { font-size: 0.8125rem; color: var(--clr-text-muted); }

/* ── FOOTER ──────────────────────────────────────────────── */
.site-footer {
  background: #0D1117;
  color: rgba(255,255,255,.75);
  padding-top: var(--sp-16); padding-bottom: var(--sp-8);
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--sp-8); margin-bottom: var(--sp-12);
}
.footer-logo .logo-text { color: #fff; }
.footer-tagline { font-size: 0.875rem; font-weight: 600; color: rgba(255,255,255,.9); margin-block: var(--sp-3) var(--sp-2); }
.footer-desc { font-size: 0.8125rem; line-height: 1.65; color: rgba(255,255,255,.5); }
.footer-heading {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; color: rgba(255,255,255,.9); margin-bottom: var(--sp-4);
}
.footer-links { display: flex; flex-direction: column; gap: var(--sp-2); }
.footer-links a {
  font-size: 0.875rem; color: rgba(255,255,255,.55);
  transition: color var(--transition);
}
.footer-links a:hover { color: rgba(255,255,255,.9); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: var(--sp-6); display: flex;
  justify-content: space-between; align-items: center;
  font-size: 0.8125rem; color: rgba(255,255,255,.4); flex-wrap: wrap; gap: var(--sp-3);
}
.footer-bottom a { color: rgba(255,255,255,.6); transition: color var(--transition); }
.footer-bottom a:hover { color: #fff; }
.footer-note { font-size: 0.75rem; }

/* ── COOKIE BANNER ───────────────────────────────────────── */
.cookie-banner {
  position: fixed; bottom: 1.5rem; left: 1.5rem; right: 1.5rem;
  max-width: 620px; margin-inline: auto;
  background: #111827; color: rgba(255,255,255,.9);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  padding: var(--sp-4) var(--sp-5);
  display: flex; align-items: center; gap: var(--sp-4); flex-wrap: wrap;
  z-index: 1000;
  animation: slideUp .4s ease;
}
.cookie-banner.hidden { display: none; }
@keyframes slideUp { from { transform: translateY(100px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.cookie-banner p { font-size: 0.875rem; flex: 1; line-height: 1.5; }
.cookie-banner a { color: #93C5FD; }
.cookie-actions { display: flex; gap: var(--sp-2); flex-shrink: 0; }

/* ── PAGINATION ──────────────────────────────────────────── */
.pagination { display: flex; align-items: center; justify-content: center; gap: var(--sp-2); margin-top: var(--sp-12); }
.page-btn {
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: var(--radius);
  font-size: 0.875rem; font-weight: 600;
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted); transition: all var(--transition);
}
.page-btn:hover, .page-btn.active {
  background: var(--clr-primary); border-color: var(--clr-primary);
  color: #fff;
}

/* ── TAGS ────────────────────────────────────────────────── */
.tags { display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.tag {
  display: inline-flex; padding: var(--sp-1) var(--sp-3);
  background: var(--clr-surface-alt); color: var(--clr-text-muted);
  border-radius: var(--radius-full); font-size: 0.8125rem; font-weight: 500;
  border: 1px solid var(--clr-border); transition: all var(--transition);
}
.tag:hover { background: var(--clr-primary-light); color: var(--clr-primary); border-color: transparent; }

/* ── BACK TO TOP ─────────────────────────────────────────── */
#back-to-top {
  position: fixed; bottom: 2rem; right: 2rem;
  width: 44px; height: 44px;
  background: var(--clr-primary); color: #fff;
  border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md); z-index: 400;
  opacity: 0; pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  font-size: 1.2rem;
}
#back-to-top.visible { opacity: 1; pointer-events: all; }
#back-to-top:hover { transform: translateY(-3px); }

/* ── LOADING SKELETON ────────────────────────────────────── */
@keyframes shimmer { 0%,100% { opacity: 1; } 50% { opacity: .5; } }
.skeleton { background: var(--clr-border-light); border-radius: var(--radius-sm); animation: shimmer 1.5s infinite; }

/* ── UTILITY ─────────────────────────────────────────────── */
.text-center { text-align: center; }
.text-muted { color: var(--clr-text-muted); }
.mt-0 { margin-top: 0 !important; }
.mb-4 { margin-bottom: var(--sp-4); }
.mb-8 { margin-bottom: var(--sp-8); }
.mb-12 { margin-bottom: var(--sp-12); }
.no-results { text-align: center; padding: var(--sp-16); color: var(--clr-text-muted); }
.no-results .icon { font-size: 3rem; margin-bottom: var(--sp-4); }

/* ── BLOG PAGE FILTERS ───────────────────────────────────── */
.blog-header { padding-block: var(--sp-12); }
.blog-header h1 { font-size: clamp(2rem, 5vw, 3rem); margin-bottom: var(--sp-3); }
.blog-header p { font-size: 1.125rem; color: var(--clr-text-muted); max-width: 55ch; }
.blog-filters { padding-block: var(--sp-5) var(--sp-8); border-bottom: 1px solid var(--clr-border-light); margin-bottom: var(--sp-8); }

/* ── HOMEPAGE SECTIONS ───────────────────────────────────── */
.trending-bar {
  background: var(--clr-primary); color: #fff;
  padding-block: var(--sp-3);
}
.trending-inner { display: flex; align-items: center; gap: var(--sp-4); overflow: hidden; }
.trending-label {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em;
  background: rgba(255,255,255,.2); padding: 3px 10px; border-radius: var(--radius-full);
  flex-shrink: 0;
}
.trending-scroll { display: flex; gap: var(--sp-8); overflow-x: auto; scrollbar-width: none; }
.trending-scroll::-webkit-scrollbar { display: none; }
.trending-item { white-space: nowrap; font-size: 0.875rem; opacity: .9; display: flex; align-items: center; gap: var(--sp-2); }
.trending-item a { color: #fff; font-weight: 500; }
.trending-item a:hover { opacity: .8; }
.trending-num { font-size: 0.7rem; opacity: .6; }

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .hamburger { display: flex; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .card-featured { flex-direction: column; grid-column: span 1; }
  .card-featured .card-img-link { width: 100%; }
  .card-featured .card-img-wrap { min-height: 200px; aspect-ratio: 16/9; }
  .contact-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr 1fr; }
  .value-cards { grid-template-columns: 1fr; }
  .section-header { flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--sp-8); }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-stats { gap: var(--sp-6); }
  .newsletter-form { flex-direction: column; }
  .newsletter-form input, .newsletter-form .btn { width: 100%; }
  .team-grid { grid-template-columns: 1fr; }
  .search-form { flex-direction: column; }
  .share-bar { gap: var(--sp-2); }
  .author-box { flex-direction: column; }
}

/* ── Print ───────────────────────────────────────────────── */
@media print {
  .site-header, .site-footer, .article-sidebar, .share-bar, .cookie-banner, #back-to-top { display: none; }
  .article-layout { display: block; }
  .prose { font-size: 12pt; }
}