/* ==============================================
   CTlearn — CT Radiology Education
   Full Dark-Mode Design System
   ============================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@400;600;700;800&display=swap');

:root {
  --bg-primary:       #080c14;
  --bg-secondary:     #0d1526;
  --bg-card:          rgba(15, 23, 42, 0.75);
  --border-default:   rgba(6, 182, 212, 0.1);
  --border-hover:     rgba(6, 182, 212, 0.35);
  --border-subtle:    rgba(255, 255, 255, 0.06);
  --primary:          #06b6d4;
  --primary-dark:     #0891b2;
  --primary-glow:     rgba(6, 182, 212, 0.22);
  --secondary:        #3b82f6;
  --accent:           #8b5cf6;
  --success:          #10b981;
  --warning:          #f59e0b;
  --danger:           #ef4444;
  --text-primary:     #e2e8f0;
  --text-secondary:   #94a3b8;
  --text-dim:         #64748b;
  --glass-blur:       blur(20px);
  --shadow-card:      0 4px 24px rgba(0,0,0,0.4);
  --shadow-hover:     0 12px 40px rgba(0,0,0,0.6), 0 0 0 1px rgba(6,182,212,0.15);
  --radius-sm:        8px;
  --radius-md:        12px;
  --radius-lg:        20px;
  --radius-xl:        28px;
  --transition:       all 0.3s ease;
  --transition-bounce: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* ---------- Reset ---------- */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

/* ---------- Animated Background ---------- */
.bg-glow {
  position: fixed; inset: 0;
  z-index: 0; overflow: hidden; pointer-events: none;
}
.bg-glow::before {
  content: '';
  position: absolute; top: -20%; right: -10%;
  width: 60vw; height: 60vw; border-radius: 50%;
  background: radial-gradient(circle, rgba(6,182,212,0.12) 0%, transparent 65%);
  animation: drift 18s ease-in-out infinite alternate;
}
.bg-glow::after {
  content: '';
  position: absolute; bottom: -20%; left: -10%;
  width: 70vw; height: 70vw; border-radius: 50%;
  background: radial-gradient(circle, rgba(59,130,246,0.09) 0%, transparent 65%);
  animation: drift 22s ease-in-out infinite alternate-reverse;
}
@keyframes drift {
  0%   { transform: translate(0,0) scale(1); }
  100% { transform: translate(30px,20px) scale(1.06); }
}

/* ---------- Navigation ---------- */
.main-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(8,12,20,0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-subtle);
}
.nav-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 1.5rem;
  height: 68px; display: flex; align-items: center;
  justify-content: space-between; gap: 2rem;
}
.nav-logo {
  display: flex; align-items: center; gap: 0.6rem;
  font-family: 'Outfit', sans-serif; font-size: 1.5rem;
  font-weight: 800; letter-spacing: -0.02em;
  color: var(--text-primary); text-decoration: none; flex-shrink: 0;
}
.logo-ct { color: var(--primary); }
.logo-badge {
  font-size: 0.65rem; font-weight: 700;
  background: var(--primary-glow); color: var(--primary);
  border: 1px solid rgba(6,182,212,0.3);
  padding: 0.15rem 0.5rem; border-radius: 6px;
  letter-spacing: 0.06em; text-transform: uppercase;
  font-family: 'Inter', sans-serif;
}
.nav-links { display: flex; align-items: center; gap: 0.2rem; }
.nav-links a {
  color: var(--text-secondary); font-size: 0.9rem; font-weight: 500;
  padding: 0.5rem 0.9rem; border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-links a:hover { color: var(--text-primary); background: rgba(255,255,255,0.06); }
.nav-links a.active { color: var(--primary); background: rgba(6,182,212,0.06); }
.nav-cta {
  background: linear-gradient(135deg, var(--primary), var(--secondary)) !important;
  color: #fff !important; padding: 0.5rem 1.2rem !important;
  border-radius: var(--radius-md) !important; font-weight: 600 !important;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 4px 16px var(--primary-glow); }

/* ---------- Ad Placeholders ---------- */
.ad-placeholder {
  background: rgba(255,255,255,0.015);
  border: 1px dashed rgba(255,255,255,0.07);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-dim); font-size: 0.65rem;
  font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  overflow: hidden;
}
.ad-top-container { margin: 0.5rem auto 0.75rem; text-align: center; overflow: hidden; }
.ad-header-bar  { width: 100%; height: 70px; }
.ad-horizontal  { width: 100%; height: auto; min-height: 90px; margin: 0.75rem 0; }
.ad-in-article  { width: 100%; min-height: 250px; margin: 1.5rem 0; border-radius: var(--radius-md); }
.ad-square      { width: 100%; height: 250px; margin-bottom: 1.25rem; border-radius: var(--radius-md); }
.ad-tall        { width: 100%; height: 600px; border-radius: var(--radius-md); }

/* ---------- Layout ---------- */
main { flex: 1; position: relative; z-index: 1; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }

/* ---------- Hero ---------- */
.hero {
  padding: 4rem 1.5rem 2.5rem; text-align: center;
  max-width: 880px; margin: 0 auto;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(6,182,212,0.08); border: 1px solid rgba(6,182,212,0.2);
  color: var(--primary); font-size: 0.75rem; font-weight: 700;
  padding: 0.4rem 1rem; border-radius: 50px; margin-bottom: 1.5rem;
  letter-spacing: 0.06em; text-transform: uppercase;
  animation: fadeInDown 0.6s ease both;
}
.hero h1 {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800; line-height: 1.15; margin-bottom: 1.25rem;
  letter-spacing: -0.02em; animation: fadeInUp 0.6s ease 0.1s both;
}
.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero p {
  font-size: 1.1rem; color: var(--text-secondary);
  max-width: 600px; margin: 0 auto 2.5rem; line-height: 1.8;
  animation: fadeInUp 0.6s ease 0.2s both;
}
.hero-actions {
  display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.3s both;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.6rem; padding: 0.75rem 1.75rem; border-radius: var(--radius-md);
  font-family: 'Inter', sans-serif; font-size: 0.95rem; font-weight: 600;
  text-decoration: none; transition: var(--transition); border: none; cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff; box-shadow: 0 4px 16px var(--primary-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(6,182,212,0.4); }
.btn-secondary {
  background: rgba(255,255,255,0.06); color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}
.btn-secondary:hover { background: rgba(255,255,255,0.1); border-color: var(--border-hover); transform: translateY(-1px); }
.btn-ghost {
  background: transparent; color: var(--primary); border: 1px solid rgba(6,182,212,0.3);
}
.btn-ghost:hover { background: rgba(6,182,212,0.08); border-color: var(--primary); }

/* ---------- Section Headers ---------- */
.section-header { margin-bottom: 2.5rem; }
.section-header h2 {
  font-family: 'Outfit', sans-serif; font-size: 1.85rem;
  font-weight: 700; margin-bottom: 0.5rem; letter-spacing: -0.01em;
}
.section-header p { color: var(--text-secondary); font-size: 0.95rem; }
.section-divider {
  width: 48px; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px; margin: 0.75rem 0 0;
}

/* ---------- Article Cards ---------- */
.articles-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(320px,1fr));
  gap: 1.5rem; margin-bottom: 3rem;
}
.article-card {
  background: var(--bg-card); border: 1px solid var(--border-default);
  border-radius: var(--radius-lg); overflow: hidden; transition: var(--transition);
  backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
  display: flex; flex-direction: column;
}
.article-card:hover {
  transform: translateY(-4px); border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
}
.article-card-thumb {
  width: 100%; height: 190px; object-fit: contain;
  background: #050810;
}
.article-card-thumb-ph {
  width: 100%; height: 190px; background: linear-gradient(135deg, #0d1a2e, #0f2645);
  display: flex; align-items: center; justify-content: center; font-size: 3.5rem;
}
.article-card-body {
  padding: 1.4rem; display: flex; flex-direction: column; flex: 1;
}
.article-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 0.8rem; }
.tag {
  font-size: 0.65rem; font-weight: 700; padding: 0.2rem 0.65rem;
  border-radius: 50px; background: rgba(6,182,212,0.09);
  color: var(--primary); border: 1px solid rgba(6,182,212,0.2);
  letter-spacing: 0.04em; text-transform: uppercase;
  text-decoration: none; /* for <a> tags */
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
  cursor: pointer;
  display: inline-block;
}
.tag:hover {
  background: rgba(6,182,212,0.18); border-color: rgba(6,182,212,0.5);
  transform: translateY(-1px);
}
.tag.tag-active {
  background: rgba(6,182,212,0.25); border-color: var(--primary);
  color: var(--primary); box-shadow: 0 0 0 1px rgba(6,182,212,0.3);
}

/* ---------- Blog Filter Header ---------- */
.blog-header-back a {
  font-size: 0.82rem; color: var(--text-dim); font-weight: 500;
  text-decoration: none; transition: color 0.2s;
  display: inline-flex; align-items: center; gap: 0.3rem;
  margin-bottom: 0.75rem;
}
.blog-header-back a:hover { color: var(--primary); }
.filter-tag-label {
  font-family: 'Outfit', sans-serif;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

/* ---------- No Results ---------- */
.no-results {
  text-align: center; padding: 4rem 1.5rem;
  color: var(--text-secondary);
}
.no-results-icon { font-size: 3rem; margin-bottom: 1rem; opacity: 0.5; }
.no-results h2 {
  font-family: 'Outfit', sans-serif; font-size: 1.5rem;
  color: var(--text-primary); margin-bottom: 0.75rem;
}
.no-results p { margin-bottom: 1.5rem; }

.article-card-title {
  font-family: 'Outfit', sans-serif; font-size: 1.1rem; font-weight: 700;
  color: var(--text-primary); margin-bottom: 0.6rem; line-height: 1.4;
  display: block; transition: color 0.2s;
}
.article-card-title:hover { color: var(--primary); }
.article-card-desc {
  color: var(--text-secondary); font-size: 0.86rem; line-height: 1.65;
  margin-bottom: 1.2rem; flex: 1;
}
.article-card-meta {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 0.76rem; color: var(--text-dim);
  border-top: 1px solid var(--border-subtle); padding-top: 1rem; margin-top: auto;
}
.read-more {
  color: var(--primary); font-weight: 600; font-size: 0.8rem;
  display: flex; align-items: center; gap: 0.3rem; transition: gap 0.2s;
}
.read-more:hover { gap: 0.6rem; }

/* ---------- Page Layout (Blog/Article) ---------- */
.page-layout {
  display: grid; grid-template-columns: 1fr 300px;
  gap: 2.5rem; max-width: 1280px; margin: 1.5rem auto 3rem;
  padding: 0 1.5rem; align-items: flex-start;
}
.page-content { min-width: 0; }

/* ---------- Sidebar ---------- */
.sidebar { position: sticky; top: 88px; display: flex; flex-direction: column; gap: 1.5rem; }
.sidebar-card {
  background: var(--bg-card); border: 1px solid var(--border-default);
  border-radius: var(--radius-lg); padding: 1.4rem;
  backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
}
.sidebar-card-title {
  font-size: 0.72rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--text-dim); margin-bottom: 1rem;
}
.sidebar-item {
  padding: 0.6rem 0; border-bottom: 1px solid var(--border-subtle);
  display: flex; flex-direction: column; gap: 0.2rem;
}
.sidebar-item:last-child { border-bottom: none; padding-bottom: 0; }
.sidebar-item a {
  font-size: 0.84rem; color: var(--text-secondary); line-height: 1.45;
  font-weight: 500; transition: color 0.2s;
}
.sidebar-item a:hover { color: var(--primary); }
.sidebar-item span { font-size: 0.7rem; color: var(--text-dim); }

/* ---------- Article Wrapper ---------- */
.article-wrapper {
  background: var(--bg-card); border: 1px solid var(--border-default);
  border-radius: var(--radius-xl); padding: 3rem;
  backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
}
.article-hero-img {
  width: 100%; max-height: 420px; object-fit: contain;
  background: #050810;
  border-radius: var(--radius-lg); margin-bottom: 2.5rem;
  cursor: zoom-in;
  transition: opacity 0.2s;
}
.article-hero-img:hover { opacity: 0.9; }
.article-header {
  text-align: center; margin-bottom: 2.5rem;
  padding-bottom: 2rem; border-bottom: 1px solid var(--border-subtle);
}
.article-header .article-tags { justify-content: center; }
.article-title {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800;
  line-height: 1.25; margin: 0.75rem 0; letter-spacing: -0.02em;
}
.article-meta-bar {
  display: flex; align-items: center; justify-content: center;
  gap: 1.5rem; color: var(--text-dim); font-size: 0.84rem; flex-wrap: wrap;
}
.article-meta-bar span { display: flex; align-items: center; gap: 0.35rem; }

/* ---------- Article Body Typography ---------- */
.article-body {
  color: var(--text-secondary); font-size: 1.05rem;
  line-height: 1.9; max-width: 72ch; margin: 2rem auto 0;
}
.article-body h2 {
  font-family: 'Outfit', sans-serif; font-size: 1.5rem; font-weight: 700;
  color: var(--text-primary); margin: 2.5rem 0 1rem;
  padding-left: 1rem; border-left: 3px solid var(--primary);
}
.article-body h3 {
  font-family: 'Outfit', sans-serif; font-size: 1.15rem; font-weight: 600;
  color: var(--text-primary); margin: 2rem 0 0.75rem;
}
.article-body p { margin-bottom: 1.5rem; }
.article-body ul, .article-body ol { padding-left: 1.75rem; margin-bottom: 1.5rem; }
.article-body li { margin-bottom: 0.5rem; }
.article-body strong { color: var(--text-primary); font-weight: 600; }
.article-body em { color: #7dd3fc; font-style: italic; }
.article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: #22d3ee; }
.article-body blockquote {
  background: rgba(6,182,212,0.05); border-left: 4px solid var(--primary);
  padding: 1.25rem 1.5rem; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 2rem 0; font-style: italic;
}
.article-body table { width: 100%; border-collapse: collapse; margin: 2rem 0; font-size: 0.9rem; }
.article-body th {
  background: rgba(6,182,212,0.1); color: var(--primary);
  padding: 0.75rem 1rem; text-align: left; font-weight: 600;
  border-bottom: 2px solid rgba(6,182,212,0.2);
}
.article-body td { padding: 0.75rem 1rem; border-bottom: 1px solid var(--border-subtle); }
.article-body tr:hover td { background: rgba(255,255,255,0.02); }

/* ---------- Article Figures / Annotated CT Images ---------- */
.article-body figure {
  margin: 2.5rem 0;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #050810;
}
.article-body figure img {
  width: 100%; height: auto; display: block; margin: 0;
  border-radius: 0; border: none;
  max-height: 480px; object-fit: contain;
}
.article-body figcaption {
  padding: 0.85rem 1.25rem;
  font-size: 0.8rem; color: var(--text-dim);
  font-style: italic; line-height: 1.65;
  border-top: 1px solid var(--border-subtle);
  background: rgba(6,182,212,0.03);
}
.article-body figcaption strong {
  color: var(--primary); font-style: normal;
  font-weight: 700; font-size: 0.72rem;
  text-transform: uppercase; letter-spacing: 0.05em; margin-right: 0.4rem;
}


/* ---------- Medical Disclaimer Box ---------- */
.medical-disclaimer {
  background: rgba(245,158,11,0.05); border: 1px solid rgba(245,158,11,0.22);
  border-radius: var(--radius-md); padding: 1.4rem; margin-top: 3rem;
}
.medical-disclaimer strong {
  display: block; color: var(--warning); font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.6rem;
}
.medical-disclaimer p { font-size: 0.82rem; color: #8a7045; line-height: 1.75; margin: 0; }

/* ---------- Blog Page Header ---------- */
.blog-header { padding: 4.5rem 1.5rem 2.5rem; max-width: 1280px; margin: 0 auto; }
.blog-header h1 {
  font-family: 'Outfit', sans-serif; font-size: clamp(2rem,4vw,3rem);
  font-weight: 800; margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.blog-header p { color: var(--text-secondary); font-size: 0.95rem; }

/* ---------- Pagination ---------- */
.pagination {
  display: flex; justify-content: center; align-items: center;
  gap: 0.4rem; margin: 2.5rem 0; flex-wrap: wrap;
}
.pagination a, .pagination span {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 40px; height: 40px; padding: 0 0.75rem;
  border-radius: var(--radius-sm); font-size: 0.9rem; font-weight: 600; transition: var(--transition);
}
.pagination a {
  background: rgba(255,255,255,0.04); color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}
.pagination a:hover { background: rgba(6,182,212,0.1); color: var(--primary); border-color: rgba(6,182,212,0.3); }
.pagination span.current {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff; box-shadow: 0 4px 14px var(--primary-glow);
}
.pagination span.dots { color: var(--text-dim); background: transparent; border: none; }
.pagination-info { text-align: center; color: var(--text-dim); font-size: 0.82rem; margin-bottom: 0.5rem; }

/* ---------- About Page ---------- */
.about-hero { padding: 5rem 1.5rem 3rem; text-align: center; max-width: 780px; margin: 0 auto; }
.about-hero h1 {
  font-family: 'Outfit', sans-serif; font-size: clamp(2rem,4vw,3rem); font-weight: 800; margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.about-hero p { color: var(--text-secondary); font-size: 1rem; line-height: 1.8; max-width: 600px; margin: 0 auto; }
.about-content { max-width: 860px; margin: 0 auto 4rem; padding: 0 1.5rem; }
.about-content h2 {
  font-family: 'Outfit', sans-serif; font-size: 1.5rem; font-weight: 700;
  margin: 2.5rem 0 1rem; padding-left: 1rem; border-left: 3px solid var(--primary); color: var(--text-primary);
}
.about-content p { color: var(--text-secondary); line-height: 1.85; margin-bottom: 1.25rem; }
.about-content ul { padding-left: 1.75rem; margin-bottom: 1.5rem; }
.about-content li { color: var(--text-secondary); line-height: 1.75; margin-bottom: 0.5rem; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(160px,1fr)); gap: 1.25rem; margin: 2.5rem 0; }
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border-default);
  border-radius: var(--radius-lg); padding: 1.75rem 1.25rem; text-align: center;
  backdrop-filter: var(--glass-blur); transition: var(--transition);
}
.stat-card:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.stat-number { font-family: 'Outfit', sans-serif; font-size: 2.4rem; font-weight: 800; color: var(--primary); display: block; margin-bottom: 0.25rem; }
.stat-label { font-size: 0.82rem; color: var(--text-secondary); font-weight: 500; }

/* ---------- Contact Form ---------- */
.contact-wrapper { max-width: 680px; margin: 3rem auto 5rem; padding: 0 1.5rem; }
.contact-intro { margin-bottom: 2rem; }
.contact-intro h1 { font-family: 'Outfit', sans-serif; font-size: 2.5rem; font-weight: 800; margin-bottom: 0.5rem; }
.contact-intro p { color: var(--text-secondary); }
.contact-form {
  background: var(--bg-card); border: 1px solid var(--border-default);
  border-radius: var(--radius-xl); padding: 2.5rem;
  backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
}
.form-group { margin-bottom: 1.4rem; }
.form-group label {
  display: block; font-size: 0.78rem; font-weight: 700;
  color: var(--text-secondary); margin-bottom: 0.5rem;
  text-transform: uppercase; letter-spacing: 0.06em;
}
.form-group input, .form-group textarea {
  width: 100%; background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-subtle); border-radius: var(--radius-md);
  padding: 0.85rem 1rem; font-family: 'Inter', sans-serif;
  font-size: 0.95rem; color: var(--text-primary); transition: var(--transition); outline: none;
}
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--primary); background: rgba(6,182,212,0.04);
  box-shadow: 0 0 0 3px rgba(6,182,212,0.1);
}
.form-group textarea { resize: vertical; min-height: 140px; }
.form-submit {
  width: 100%; padding: 1rem; border-radius: var(--radius-md);
  font-size: 1rem; font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff; border: none; cursor: pointer; transition: var(--transition);
}
.form-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(6,182,212,0.4); }
.form-msg {
  padding: 0.9rem 1rem; border-radius: var(--radius-sm); font-size: 0.88rem;
  font-weight: 500; margin-bottom: 1.25rem;
}
.form-msg.success { background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.3); color: var(--success); }
.form-msg.error   { background: rgba(239,68,68,0.1);  border: 1px solid rgba(239,68,68,0.3);  color: var(--danger); }
.honeypot { display: none !important; }

/* ---------- Static Pages ---------- */
.static-page { max-width: 840px; margin: 4rem auto; padding: 0 1.5rem 5rem; }
.static-page h1 { font-family: 'Outfit', sans-serif; font-size: 2.4rem; font-weight: 800; margin-bottom: 0.4rem; }
.static-page .last-updated { color: var(--text-dim); font-size: 0.82rem; margin-bottom: 3rem; display: block; }
.static-page h2 {
  font-family: 'Outfit', sans-serif; font-size: 1.35rem; font-weight: 700;
  color: var(--text-primary); margin: 2.5rem 0 1rem;
  padding-left: 1rem; border-left: 3px solid var(--primary);
}
.static-page p { color: var(--text-secondary); line-height: 1.85; margin-bottom: 1.2rem; }
.static-page ul, .static-page ol { padding-left: 1.75rem; margin-bottom: 1.5rem; }
.static-page li { color: var(--text-secondary); line-height: 1.75; margin-bottom: 0.4rem; }
.disclaimer-box {
  background: rgba(239,68,68,0.05); border: 1px solid rgba(239,68,68,0.22);
  border-radius: var(--radius-md); padding: 1.4rem; margin: 2rem 0;
}
.disclaimer-box strong {
  display: block; color: var(--danger); font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.6rem;
}
.disclaimer-box p { font-size: 0.86rem; color: #916060; margin: 0; line-height: 1.75; }

/* ---------- Footer ---------- */
.main-footer {
  background: rgba(8,12,20,0.7); border-top: 1px solid var(--border-subtle);
  padding: 3rem 1.5rem 1.5rem; position: relative; z-index: 10;
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}
.footer-grid {
  max-width: 1280px; margin: 0 auto 2rem;
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 3rem;
}
.footer-brand .nav-logo { margin-bottom: 1rem; }
.footer-brand p { color: var(--text-dim); font-size: 0.84rem; line-height: 1.7; max-width: 240px; }
.footer-col h4 {
  font-size: 0.72rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--text-secondary); margin-bottom: 1rem;
}
.footer-col a { display: block; color: var(--text-dim); font-size: 0.84rem; margin-bottom: 0.65rem; transition: color 0.2s; }
.footer-col a:hover { color: var(--primary); }
/* Override for pill-style tag links inside footer (grid children must be block) */
.footer-col .footer-tag {
  display: block !important;
  margin-bottom: 0 !important;
  font-size: 0.68rem !important;
  width: 100% !important;
  box-sizing: border-box;
}
.footer-col .footer-tag:hover { color: var(--primary); background: rgba(6,182,212,0.1); border-color: rgba(6,182,212,0.25); }

.footer-bottom {
  max-width: 1280px; margin: 0 auto;
  padding-top: 1.5rem; border-top: 1px solid var(--border-subtle);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem;
}
.footer-bottom p { color: var(--text-dim); font-size: 0.78rem; }
.social-links { display: flex; gap: 0.6rem; }
.social-links a {
  width: 34px; height: 34px; border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.05); border: 1px solid var(--border-subtle);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-dim); transition: var(--transition);
}
.social-links a:hover { background: rgba(6,182,212,0.1); border-color: rgba(6,182,212,0.3); color: var(--primary); transform: translateY(-2px); }

/* ---------- Footer Topic Tags ---------- */
.footer-tags {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.35rem;
  margin-top: 0.25rem;
}
.footer-tag {
  font-size: 0.68rem; font-weight: 600;
  padding: 0.28rem 0.5rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 50px;
  color: var(--text-dim);
  text-decoration: none;
  transition: all 0.2s;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.footer-tag:hover {
  background: rgba(6,182,212,0.1);
  border-color: rgba(6,182,212,0.25);
  color: var(--primary);
}
.footer-tag-all {
  grid-column: 1 / -1;   /* span both columns */
  color: var(--primary);
  background: rgba(6,182,212,0.06);
  border-color: rgba(6,182,212,0.2);
  text-align: center;
}


/* ---------- Pin / Featured Badge ---------- */
.pin-label {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-size: 0.67rem; font-weight: 800;
  text-transform: uppercase; letter-spacing: 0.07em;
  color: #f59e0b; padding: 0.22rem 0.7rem;
  background: rgba(245,158,11,0.1);
  border: 1px solid rgba(245,158,11,0.3);
  border-radius: 50px; margin-bottom: 0.6rem;
}
.is-pinned {
  border-color: rgba(245,158,11,0.35) !important;
  box-shadow: 0 0 0 1px rgba(245,158,11,0.15), var(--shadow-card);
}
.is-pinned .article-card-thumb,
.is-pinned .article-card-thumb-ph {
  border-bottom: 2px solid rgba(245,158,11,0.4);
}

/* ---------- CT Image Lightbox (v2) ---------- */
#ct-lb {
  /* display:none by default — zero layout footprint */
  display: none;
  position: fixed;
  top: 0; right: 0; bottom: 0; left: 0;
  z-index: 9999;
  background: rgba(4, 7, 14, 0.97);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
  /* fade controlled by .lb-open class */
  opacity: 0;
  transition: opacity 0.22s ease;
}
#ct-lb.lb-open { opacity: 1; }

/* Backdrop — covers full screen, click to close */
#ct-lb-bg {
  position: absolute;
  top: 0; right: 0; bottom: 0; left: 0;
  z-index: 0;
  cursor: pointer;
}

/* Viewport — the pannable/zoomable canvas */
#ct-lb-vp {
  position: relative;
  z-index: 1;
  flex: 1;
  width: 100%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
}
#ct-lb-vp.dragging { cursor: grabbing; }

/* The image — transform handles pan + zoom */
#ct-lb-img {
  max-width: 90vw;
  max-height: calc(100vh - 140px);
  width: auto; height: auto;
  object-fit: contain;
  transform-origin: 50% 50%;
  will-change: transform;
  user-select: none;
  -webkit-user-drag: none;
  pointer-events: none;
  display: block;
  border-radius: 6px;
}

/* Control bar — below the viewport */
#ct-lb-ctrl {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 5px 14px;
  margin: 10px 0 0;
  background: rgba(10, 16, 30, 0.96);
  border: 1px solid rgba(6, 182, 212, 0.18);
  border-radius: 50px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}
#ct-lb-ctrl button {
  background: none; border: none;
  color: #94a3b8;
  font-size: 1.35rem; line-height: 1;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  border-radius: 50%;
  transition: background 0.18s, color 0.18s;
}
#ct-lb-ctrl button:hover { background: rgba(6,182,212,0.14); color: #06b6d4; }
#ct-lb-ctrl #ct-lb-cls:hover { background: rgba(239,68,68,0.15); color: #ef4444; }
.lb-sep {
  width: 1px; height: 20px;
  background: rgba(255,255,255,0.1);
  margin: 0 4px; flex-shrink: 0;
}
#ct-lb-pct {
  min-width: 48px; text-align: center;
  font-size: 0.76rem; color: #475569;
  font-weight: 700; letter-spacing: 0.02em;
  padding: 0 2px;
}

/* Caption — below controls */
#ct-lb-cap {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  max-width: 700px; width: 90%;
  text-align: center;
  font-size: 0.78rem; color: #475569;
  font-style: italic; line-height: 1.5;
  padding: 8px 1rem 14px;
}
#ct-lb-cap:empty { display: none; }

/* ---------- Error Page ---------- */
.error-page { text-align: center; padding: 6rem 1.5rem; max-width: 480px; margin: 0 auto; }
.error-page .err-code { font-family: 'Outfit', sans-serif; font-size: 7rem; font-weight: 800; color: var(--primary); line-height: 1; }

/* ---------- Animations ---------- */
@keyframes fadeInDown { from { opacity:0; transform:translateY(-16px); } to { opacity:1; transform:translateY(0); } }
@keyframes fadeInUp   { from { opacity:0; transform:translateY(20px); }  to { opacity:1; transform:translateY(0); } }
@keyframes fadeIn     { from { opacity:0; } to { opacity:1; } }
.animate-in { animation: fadeInUp 0.5s ease both; }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .page-layout { grid-template-columns: 1fr; }
  .sidebar { position: relative; top: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}
@media (max-width: 768px) {
  .hero { padding: 3.5rem 1.5rem 3rem; }
  .articles-grid { grid-template-columns: 1fr; }
  .nav-links a:not(.nav-cta) { display: none; }
  .article-wrapper { padding: 1.5rem; border-radius: var(--radius-lg); }
  .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .footer-brand p { max-width: 100%; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 480px) {
  .hero h1 { font-size: 2rem; }
  .hero-actions { flex-direction: column; }
  .contact-form { padding: 1.5rem; }
  .stats-grid { grid-template-columns: 1fr; }
  .pagination a, .pagination span { min-width: 34px; height: 34px; font-size: 0.82rem; }
  .static-page h1 { font-size: 1.9rem; }
}