/* ========================================
   Reset & Base
======================================== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary:    #0f172a;
  --bg-surface:    #1e293b;
  --bg-surface2:   #334155;
  --text-primary:  #e2e8f0;
  --text-secondary:#94a3b8;
  --text-muted:    #64748b;
  --accent:        #14b8a6;
  --accent-dark:   #0d9488;
  --accent-light:  #5eead4;
  --accent-glow:   rgba(20, 184, 166, 0.15);
  --border:        rgba(148, 163, 184, 0.12);
  --shadow:        0 4px 24px rgba(0, 0, 0, 0.4);
  --radius:        12px;
  --transition:    0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ========================================
   Scrollbar
======================================== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent-dark); border-radius: 3px; }

/* ========================================
   Utility
======================================== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 560px;
}

section {
  padding: 96px 0;
}

/* ========================================
   Navbar
======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

.navbar.scrolled {
  border-bottom-color: var(--border);
  background: rgba(15, 23, 42, 0.95);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 8px;
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
  background: var(--accent-glow);
}

.nav-cta {
  background: var(--accent) !important;
  color: var(--bg-primary) !important;
  font-weight: 600 !important;
  padding: 8px 18px !important;
  border-radius: 8px !important;
}

.nav-cta:hover {
  background: var(--accent-light) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========================================
   Hero
======================================== */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 64px;
  position: relative;
  z-index: 1;
}

.hero-photo-wrap {
  flex-shrink: 0;
}

.hero-photo-ring {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  padding: 4px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light), #6366f1);
  box-shadow: 0 0 48px rgba(20, 184, 166, 0.25);
  position: relative;
}

.hero-photo-ring::after {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 1px solid var(--border);
}

.hero-photo {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.25;
}

.hero-orb-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
  top: -100px;
  right: -100px;
}

.hero-orb-2 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, #6366f1 0%, transparent 70%);
  bottom: 0;
  left: -80px;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-greeting {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-greeting::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.hero-name {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-weight: 500;
}

.hero-title strong {
  color: var(--accent-light);
  font-weight: 600;
}

.hero-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.hero-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--text-muted);
  display: inline-block;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--bg-primary);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 12px 24px;
  border-radius: 10px;
  text-decoration: none;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
  letter-spacing: 0.01em;
}

.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(20, 184, 166, 0.3);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 12px 24px;
  border-radius: 10px;
  text-decoration: none;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

.hero-stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 4px;
}

.hero-stat-value span {
  color: var(--accent);
}

.hero-stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
}

/* ========================================
   About
======================================== */
#about {
  background: var(--bg-surface);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 0.975rem;
  line-height: 1.8;
}

.about-text p:last-child { margin-bottom: 0; }

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.highlight-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  transition: border-color var(--transition), transform var(--transition);
}

.highlight-card:hover {
  border-color: var(--accent);
  transform: translateX(4px);
}

.highlight-icon {
  font-size: 1.5rem;
  margin-bottom: 10px;
}

.highlight-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.highlight-desc {
  font-size: 0.825rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ========================================
   Experience
======================================== */
#experience {
  background: var(--bg-primary);
}

.experience-header {
  margin-bottom: 56px;
}

.company-block {
  margin-bottom: 56px;
}

.company-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.company-logo {
  width: 48px;
  height: 48px;
  background: var(--accent-glow);
  border: 1px solid var(--accent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.03em;
  flex-shrink: 0;
}

.company-info h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.company-info p {
  font-size: 0.825rem;
  color: var(--text-muted);
}

.timeline {
  position: relative;
  padding-left: 28px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  margin-bottom: 36px;
}

.timeline-item:last-child { margin-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: -34px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-primary);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.timeline-item.current .timeline-dot {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px var(--accent-glow); }
  50% { box-shadow: 0 0 0 6px transparent; }
}

.job-header {
  margin-bottom: 12px;
}

.job-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.job-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.job-period {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
  background: var(--accent-glow);
  padding: 3px 10px;
  border-radius: 20px;
}

.job-badge {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.job-desc {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.job-desc li {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
  padding-left: 16px;
  position: relative;
}

.job-desc li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.75rem;
  top: 1px;
}

/* ========================================
   Skills
======================================== */
#skills {
  background: var(--bg-surface);
}

.skills-header {
  margin-bottom: 56px;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.skill-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.skill-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(20, 184, 166, 0.1);
}

.skill-card-icon {
  font-size: 1.75rem;
  margin-bottom: 14px;
}

.skill-card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: var(--bg-surface2);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 6px;
  font-weight: 500;
  transition: all var(--transition);
}

.tag:hover {
  color: var(--accent-light);
  border-color: var(--accent);
  background: var(--accent-glow);
}

.tech-stack {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.tech-stack-title {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tech-tag {
  font-size: 0.825rem;
  color: var(--accent-light);
  background: var(--accent-glow);
  border: 1px solid rgba(20, 184, 166, 0.25);
  padding: 6px 14px;
  border-radius: 8px;
  font-weight: 600;
  transition: all var(--transition);
}

.tech-tag:hover {
  background: rgba(20, 184, 166, 0.2);
  transform: translateY(-2px);
}

/* ========================================
   Education
======================================== */
#education {
  background: var(--bg-primary);
}

.education-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.edu-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}

.edu-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
}

.edu-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.edu-degree {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 8px;
}

.edu-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.3;
}

.edu-institution {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
  font-weight: 500;
}

.edu-year {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.edu-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
  padding: 12px;
  background: var(--bg-primary);
  border-radius: 8px;
  border-left: 2px solid var(--accent);
}

.edu-note strong {
  color: var(--text-secondary);
}

/* ========================================
   Certifications
======================================== */
#certifications {
  background: var(--bg-surface);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.cert-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.cert-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, var(--accent-glow), transparent 70%);
  opacity: 0;
  transition: opacity var(--transition);
}

.cert-card:hover {
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(20, 184, 166, 0.12);
}

.cert-card:hover::after { opacity: 1; }

.cert-icon {
  font-size: 2.25rem;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.cert-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  position: relative;
  z-index: 1;
}

.cert-issuer {
  font-size: 0.8rem;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
}

/* ========================================
   Contact
======================================== */
#contact {
  background: var(--bg-primary);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 32px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  transition: all var(--transition);
}

.contact-item:hover {
  border-color: var(--accent);
  transform: translateX(4px);
  background: var(--bg-surface2);
}

.contact-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-glow);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-item-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}

.contact-item-value {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
}

.contact-form-wrapper {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
}

.contact-form-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 0.9rem;
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-input::placeholder { color: var(--text-muted); }

textarea.form-input {
  resize: vertical;
  min-height: 110px;
}

/* ========================================
   Footer
======================================== */
footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-copy {
  font-size: 0.825rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  font-size: 0.825rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

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

/* ========================================
   Animations
======================================== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up-delay-1 { transition-delay: 0.1s; }
.fade-up-delay-2 { transition-delay: 0.2s; }
.fade-up-delay-3 { transition-delay: 0.3s; }
.fade-up-delay-4 { transition-delay: 0.4s; }

/* ========================================
   Responsive
======================================== */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .skills-grid { grid-template-columns: 1fr; }
  .education-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr 1fr; }
  .contact-wrapper { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 900px) {
  .hero-layout { grid-template-columns: 1fr; gap: 40px; }
  .hero-photo-wrap { order: -1; display: flex; justify-content: center; }
  .hero-photo-ring { width: 200px; height: 200px; }
}

@media (max-width: 640px) {
  section { padding: 72px 0; }
  .nav-links { display: none; position: fixed; top: 72px; left: 0; right: 0; background: rgba(15,23,42,0.97); flex-direction: column; padding: 24px; gap: 4px; border-bottom: 1px solid var(--border); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .cert-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
  .contact-form-wrapper { padding: 24px; }
  .news-grid { grid-template-columns: 1fr; }
  .research-grid { grid-template-columns: 1fr; }
  .article-page { padding-top: 100px; }
}

/* ========================================
   Page Hero (news.html, research.html)
======================================== */
.page-hero {
  padding-top: 140px;
  padding-bottom: 56px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
}

/* ========================================
   Filter Tabs (shared)
======================================== */
.filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-tab {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 7px 18px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: 'Inter', sans-serif;
}

.filter-tab:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.filter-tab.active {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
}

/* ========================================
   News Grid & Cards
======================================== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.news-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(20, 184, 166, 0.1);
}

.news-card-header {
  padding: 16px 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.news-source {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-badge {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  flex-shrink: 0;
}

.badge-bangladesh {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.badge-fintech {
  background: rgba(139, 92, 246, 0.15);
  color: #a78bfa;
  border: 1px solid rgba(139, 92, 246, 0.3);
}

.badge-inclusion {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-ai {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-finance {
  background: var(--accent-glow);
  color: var(--accent-light);
  border: 1px solid rgba(20, 184, 166, 0.3);
}

.news-card-body {
  padding: 14px 20px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-card-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.45;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
  flex: 1;
}

.news-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.news-card-date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.news-read-more {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color var(--transition);
}

.news-read-more:hover { color: var(--accent-light); }

.news-status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.news-last-updated {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.btn-refresh {
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: all var(--transition);
}

.btn-refresh:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 64px 24px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ========================================
   Skeleton Loader
======================================== */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton-line {
  background: linear-gradient(90deg, var(--bg-surface2) 25%, var(--bg-surface) 50%, var(--bg-surface2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
  height: 10px;
  margin-bottom: 8px;
}

.skeleton-line.title { height: 14px; width: 85%; }
.skeleton-line.short { width: 40%; }
.skeleton-line.medium { width: 70%; }
.skeleton-line.full { width: 100%; }

.skeleton-badge {
  width: 64px;
  height: 20px;
  border-radius: 20px;
  background: linear-gradient(90deg, var(--bg-surface2) 25%, var(--bg-surface) 50%, var(--bg-surface2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  flex-shrink: 0;
}

/* ========================================
   Research Grid & Cards
======================================== */
.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.research-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.research-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(20, 184, 166, 0.1);
}

.research-card-accent {
  height: 6px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  flex-shrink: 0;
}

.research-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.research-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 10px;
}

.research-card-excerpt {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.research-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.research-card-tag {
  cursor: pointer;
}

.research-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  gap: 12px;
  flex-wrap: wrap;
}

.research-meta { display: flex; flex-direction: column; gap: 2px; }
.research-meta-author { font-size: 0.75rem; color: var(--text-secondary); font-weight: 600; }
.research-meta-date { font-size: 0.72rem; color: var(--text-muted); }

.research-read-time {
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
  background: var(--accent-glow);
  padding: 4px 10px;
  border-radius: 20px;
  white-space: nowrap;
}

.research-footer-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ========================================
   Article Page
======================================== */
.article-page {
  max-width: 780px;
  margin: 0 auto;
  padding: 120px 24px 80px;
}

.article-back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-decoration: none;
  margin-bottom: 36px;
  transition: color var(--transition);
}

.article-back-link:hover { color: var(--accent); }

.article-header {
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.article-label {
  margin-bottom: 14px;
}

.article-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.article-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.article-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  margin-bottom: 20px;
}

.article-meta-item {
  font-size: 0.82rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.article-body {
  font-size: 0.975rem;
  color: var(--text-secondary);
  line-height: 1.9;
}

.article-body h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 44px 0 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.article-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent-light);
  margin: 28px 0 12px;
}

.article-body p { margin-bottom: 20px; }

.article-body ul,
.article-body ol {
  padding-left: 24px;
  margin-bottom: 20px;
}

.article-body li { margin-bottom: 8px; }

.article-body strong { color: var(--text-primary); }

.article-body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-body blockquote {
  border-left: 3px solid var(--accent);
  padding: 16px 20px;
  background: var(--bg-surface);
  border-radius: 0 8px 8px 0;
  margin: 28px 0;
  color: var(--text-secondary);
  font-style: italic;
}

.chart-container {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin: 36px 0;
}

.chart-container-title {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.chart-wrap {
  position: relative;
  height: 300px;
}

/* ========================================
   Additional responsive for new pages
======================================== */
@media (max-width: 900px) {
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .research-grid { grid-template-columns: repeat(2, 1fr); }
}