/* ==========================================================================
   GLBTF - Global Banking & Tech Finance
   Core Stylesheet - Lightweight, Fast, Responsive & Clean
   ========================================================================== */

:root {
  --primary: #0a192f;
  --primary-light: #1e293b;
  --accent: #10b981;
  --accent-hover: #059669;
  --accent-soft: rgba(16, 185, 129, 0.1);
  --text-dark: #0f172a;
  --text-muted: #64748b;
  --text-light: #f8fafc;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.03);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --container-width: 1200px;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-dark);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-hover);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Reading Progress Bar */
#reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(to right, #10b981, #3b82f6);
  width: 0%;
  z-index: 1000;
  transition: width 0.1s ease;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header & Navigation */
.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 900;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.brand-logo span.badge {
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--accent-soft);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.logo-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, #0a192f, #1e293b);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #10b981;
  font-weight: 900;
  font-size: 1.1rem;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  color: var(--primary-light);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  background: #f1f5f9;
  border-radius: 20px;
  padding: 3px;
  gap: 2px;
}

.lang-pill {
  padding: 4px 10px;
  border-radius: 16px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}

.lang-pill.active {
  background: #ffffff;
  color: var(--primary);
  box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary);
  margin: 5px 0;
  transition: all 0.3s ease;
}

/* Mobile Nav Drawer */
.mobile-drawer {
  position: fixed;
  top: 72px;
  left: 0;
  width: 100%;
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  padding: 1.5rem;
  display: none;
  flex-direction: column;
  gap: 1.25rem;
  z-index: 850;
}

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

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #0a192f 0%, #1e293b 100%);
  color: #ffffff;
  padding: 4.5rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, rgba(16, 185, 129, 0) 70%);
  pointer-events: none;
}

.hero-content {
  max-width: 800px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #10b981;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 9999px;
  margin-bottom: 1.25rem;
  backdrop-filter: blur(4px);
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -1px;
  margin-bottom: 1.25rem;
}

.hero-desc {
  font-size: 1.15rem;
  color: #94a3b8;
  line-height: 1.7;
  margin-bottom: 2rem;
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.75rem;
}

.stat-item h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: #10b981;
}

.stat-item p {
  font-size: 0.85rem;
  color: #94a3b8;
}

/* Feature/Category Strip */
.category-strip {
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
}

.strip-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  overflow-x: auto;
  white-space: nowrap;
  padding-bottom: 4px;
}

.strip-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #f1f5f9;
  color: var(--primary-light);
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid transparent;
}

.strip-badge:hover, .strip-badge.active {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: rgba(16, 185, 129, 0.2);
}

/* Section Common */
.section {
  padding: 4rem 0;
}

.section-header {
  margin-bottom: 2.5rem;
}

.section-tag {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
  display: block;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-top: 0.5rem;
}

/* Article Cards Grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 2rem;
}

.article-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-header-bar {
  height: 8px;
  background: linear-gradient(to right, #10b981, #3b82f6);
}

.card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.card-category {
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  background: var(--accent-soft);
  padding: 3px 8px;
  border-radius: 4px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--primary);
  margin-bottom: 0.85rem;
}

.card-title a {
  color: inherit;
}

.card-title a:hover {
  color: var(--accent);
}

.card-excerpt {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
}

.read-more-btn {
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Trust / E-E-A-T Highlights Box */
.trust-box {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-top: 3.5rem;
  box-shadow: var(--shadow-md);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
}

.trust-item {
  display: flex;
  gap: 1rem;
}

.trust-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}

.trust-text h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.35rem;
}

.trust-text p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Breadcrumbs */
.breadcrumbs {
  padding: 1.25rem 0;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.breadcrumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 0.5rem;
  color: #cbd5e1;
}

.breadcrumbs a {
  color: var(--text-muted);
}

.breadcrumbs a:hover {
  color: var(--accent);
}

/* Article Detail Layout */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 3rem;
  padding: 2rem 0 5rem;
}

.article-main {
  background: #ffffff;
  padding: 3rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.article-header {
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 2rem;
}

.article-title {
  font-size: 2.35rem;
  font-weight: 900;
  line-height: 1.25;
  color: var(--primary);
  margin-bottom: 1.25rem;
  letter-spacing: -0.5px;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.author-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--primary);
}

.author-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 800;
}

/* Article Content Typography */
.article-content {
  font-size: 1.08rem;
  line-height: 1.8;
  color: #334155;
}

.article-content p {
  margin-bottom: 1.5rem;
}

.article-content h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--primary);
  margin: 2.5rem 0 1rem;
  letter-spacing: -0.3px;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--bg-main);
}

.article-content h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary-light);
  margin: 1.75rem 0 0.75rem;
}

.article-content ul, .article-content ol {
  margin: 1.25rem 0 1.5rem 1.5rem;
}

.article-content li {
  margin-bottom: 0.5rem;
}

.article-content blockquote {
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  padding: 1.25rem 1.75rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  margin: 1.75rem 0;
  color: var(--primary-light);
}

.info-alert {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-left: 4px solid #3b82f6;
  padding: 1.25rem;
  border-radius: var(--radius-sm);
  margin: 1.75rem 0;
  font-size: 0.95rem;
  color: #1e3a8a;
}

.tip-alert {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-left: 4px solid #10b981;
  padding: 1.25rem;
  border-radius: var(--radius-sm);
  margin: 1.75rem 0;
  font-size: 0.95rem;
  color: #065f46;
}

/* Comparison Tables */
.table-responsive {
  overflow-x: auto;
  margin: 2rem 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.data-table th {
  background: #f1f5f9;
  color: var(--primary);
  font-weight: 700;
  padding: 12px 16px;
  border-bottom: 2px solid var(--border-color);
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  color: #334155;
}

.data-table tr:hover {
  background: #f8fafc;
}

/* Sidebar */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.widget {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.widget-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}

.widget-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.widget-list li a {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary-light);
  line-height: 1.4;
}

.widget-list li a:hover {
  color: var(--accent);
}

.widget-list li span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Static Form Styling (Contact) */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--primary);
}

.form-control {
  padding: 12px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

textarea.form-control {
  min-height: 130px;
  resize: vertical;
}

.btn-submit {
  background: var(--accent);
  color: #ffffff;
  border: none;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-submit:hover {
  background: var(--accent-hover);
}

/* Footer */
.site-footer {
  background: #0a192f;
  color: #cbd5e1;
  padding: 4.5rem 0 2rem;
  margin-top: auto;
  border-top: 1px solid #1e293b;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand h3 {
  color: #ffffff;
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.footer-brand p {
  color: #94a3b8;
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 380px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: #94a3b8;
  font-size: 0.92rem;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid #1e293b;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: #64748b;
  gap: 1rem;
}

/* Back to top button */
#back-to-top {
  position: fixed;
  bottom: 25px;
  right: 25px;
  background: var(--primary);
  color: #ffffff;
  border: 1px solid var(--accent);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 800;
  box-shadow: var(--shadow-lg);
  transition: all 0.25s ease;
}

#back-to-top:hover {
  background: var(--accent);
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .article-layout {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .nav-desktop {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .hero {
    padding: 3rem 0;
  }
  .hero-title {
    font-size: 1.85rem;
  }
  .hero-desc {
    font-size: 1rem;
  }
  .hero-stats {
    flex-direction: column;
    gap: 1rem;
  }
  .article-main {
    padding: 1.75rem;
  }
  .article-title {
    font-size: 1.75rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}