/* Bio-Neon Unique Design System for Nortella — Never repeated before */
:root {
  --bg-primary: #0b1120;
  --bg-secondary: #111827;
  --bg-card: #1e2937;
  --bg-card-hover: #334155;
  --accent-cyan: #67f6ff;
  --accent-violet: #c026ff;
  --accent-teal: #5eead4;
  --text-primary: #f1e7ff;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --border-subtle: #475569;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --shadow-soft: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-neon: 0 0 15px -3px rgb(103 246 255 / 0.25), 0 10px 10px -3px rgb(0 0 0 / 0.2);
  --transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
}

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

body {
  font-family: 'Inter', system_ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
}

/* Unique Neon Typography */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

h1 { font-size: clamp(2.75rem, 6vw, 4.25rem); }
h2 { font-size: clamp(2rem, 4.5vw, 2.75rem); }
h3 { font-size: clamp(1.35rem, 3vw, 1.75rem); }

.neon-text {
  text-shadow: 0 0 8px var(--accent-cyan), 0 0 16px var(--accent-cyan);
}

.neon-violet {
  text-shadow: 0 0 8px var(--accent-violet), 0 0 16px var(--accent-violet);
}

/* Header & Nav — Unique sticky with glass */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 17, 32, 0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

nav {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.65rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: none;
}

.nav-links {
  display: flex;
  gap: 2.25rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
  position: relative;
}

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

.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(to right, var(--accent-cyan), var(--accent-teal));
  border-radius: 2px;
}

/* Hamburger — Unique full-screen overlay */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.hamburger span {
  width: 26px;
  height: 2.5px;
  background: var(--text-primary);
  border-radius: 3px;
  transition: var(--transition);
}

.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: 100;
  display: none;
  flex-direction: column;
  padding: 2rem;
  gap: 1.5rem;
}

.mobile-menu.active {
  display: flex;
}

.mobile-menu a {
  font-size: 1.35rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
  text-decoration: none;
}

/* Hero — Asymmetric Split with Bio-Neon Visual */
.hero {
  max-width: 1280px;
  margin: 0 auto;
  padding: 4rem 2rem 5rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

.hero-text h1 {
  margin-bottom: 1.5rem;
}

.hero-text p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 42ch;
  margin-bottom: 2.25rem;
}

.hero-visual {
  position: relative;
  height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Unique Bio-Neon Orb — CSS only visual */
.bio-orb {
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, #1e3a5f 0%, #0b1120 70%);
  border: 1px solid var(--accent-cyan);
  box-shadow: 
    0 0 60px -10px var(--accent-cyan),
    inset 0 0 80px -20px var(--accent-teal),
    0 25px 50px -12px rgb(0 0 0 / 0.4);
  position: relative;
  overflow: hidden;
}

.bio-orb::before {
  content: '';
  position: absolute;
  inset: 15%;
  border-radius: 50%;
  background: radial-gradient(circle at 55% 30%, rgba(103, 246, 255, 0.35) 0%, transparent 60%);
  animation: pulse 8s ease-in-out infinite;
}

.bio-orb::after {
  content: '';
  position: absolute;
  top: 25%;
  left: 30%;
  width: 38%;
  height: 38%;
  border-radius: 50%;
  background: rgba(192, 38, 255, 0.15);
  filter: blur(8px);
}

@keyframes pulse {
  0%, 100% { opacity: 0.6; transform: scale(0.95); }
  50% { opacity: 1; transform: scale(1.08); }
}

/* Buttons — Unique pill neon style */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2.1rem;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 9999px;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-teal));
  color: #0b1120;
  box-shadow: 0 10px 15px -3px rgb(103 246 255 / 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 25px -5px rgb(103 246 255 / 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--accent-cyan);
  border: 1.5px solid var(--accent-cyan);
  box-shadow: 0 0 12px -2px rgb(103 246 255 / 0.3);
}

.btn-outline:hover {
  background: var(--accent-cyan);
  color: #0b1120;
  box-shadow: 0 0 25px var(--accent-cyan);
}

/* Long intro section — Asymmetric */
.intro {
  max-width: 1280px;
  margin: 0 auto;
  padding: 3rem 2rem 4rem;
}

.intro-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 3.5rem;
  align-items: start;
}

.intro-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

.intro-text p {
  margin-bottom: 1.35rem;
}

.intro-text h2 {
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

/* Categories — Unique horizontal flowing pills */
.categories {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem 3.5rem;
}

.categories h3 {
  margin-bottom: 1.25rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.category-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.pill {
  padding: 0.55rem 1.35rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 9999px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
  white-space: nowrap;
}

.pill:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-1px);
}

/* Articles Section — Asymmetric Masonry-like Grid */
.articles {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem 2rem 5rem;
}

.articles-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 2rem;
}

.articles-header h2 {
  margin-bottom: 0.35rem;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  min-height: 280px;
}

.article-card:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-neon);
  transform: translateY(-6px);
}

.article-card.featured {
  grid-column: span 1;
  min-height: 380px;
}

@media (min-width: 1024px) {
  .article-card.featured {
    grid-column: span 2;
  }
}

.article-card h3 {
  font-size: 1.35rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  line-height: 1.25;
}

.article-card .excerpt {
  color: var(--text-secondary);
  flex: 1;
  margin-bottom: 1.5rem;
  font-size: 0.97rem;
}

.article-card .meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.article-card .read-more {
  margin-top: auto;
  color: var(--accent-cyan);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition);
}

.article-card .read-more:hover {
  gap: 0.7rem;
}

/* Modal — Unique elegant overlay */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(11, 17, 32, 0.96);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  max-width: 820px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  padding: 3rem;
  position: relative;
  box-shadow: var(--shadow-soft);
}

.modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.75rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
  transition: var(--transition);
}

.modal-close:hover {
  color: var(--accent-cyan);
}

.modal-content h2 {
  margin-bottom: 1.5rem;
  padding-right: 3rem;
}

.modal-content .article-body {
  color: var(--text-secondary);
  font-size: 1.02rem;
}

.modal-content .article-body p {
  margin-bottom: 1.35rem;
}

/* Contact Form — Unique clean layout */
.contact-form {
  max-width: 620px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 1.65rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.55rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 0.95rem 1.25rem;
  color: var(--text-primary);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 4px rgba(103, 246, 255, 0.1);
}

.form-group textarea {
  min-height: 148px;
  resize: vertical;
}

/* Footer — Consistent, informative */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 3.5rem 2rem 2.5rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 3rem;
}

.footer-col h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 1.1rem;
}

.footer-col p, .footer-col a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  text-decoration: none;
  display: block;
  margin-bottom: 0.45rem;
}

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

.disclaimer {
  font-size: 0.8rem;
  color: var(--text-muted);
  max-width: 780px;
  margin-top: 2.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border-subtle);
}

/* Policy pages — Clean long reading */
.policy-container {
  max-width: 820px;
  margin: 0 auto;
  padding: 3rem 2rem 5rem;
}

.policy-container h1 {
  margin-bottom: 0.5rem;
}

.policy-container .last-updated {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 2.5rem;
}

.policy-section {
  margin-bottom: 2.75rem;
}

.policy-section h2 {
  font-size: 1.45rem;
  margin-bottom: 1rem;
  color: var(--accent-teal);
}

.policy-section p, .policy-section li {
  color: var(--text-secondary);
  margin-bottom: 0.85rem;
}

.policy-section ul {
  padding-left: 1.35rem;
}

/* Thank you page */
.thankyou-hero {
  text-align: center;
  padding: 5rem 2rem 3rem;
  max-width: 720px;
  margin: 0 auto;
}

.thankyou-hero h1 {
  margin-bottom: 1rem;
}

.thankyou-content {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 2rem 5rem;
  color: var(--text-secondary);
}

.thankyou-content p {
  margin-bottom: 1.25rem;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  
  .hero-text p {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }
  
  .intro-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .hamburger {
    display: flex;
  }
  
  .article-grid {
    grid-template-columns: 1fr;
  }
  
  .bio-orb {
    width: 260px;
    height: 260px;
  }
  
  .modal-content {
    padding: 2rem 1.5rem;
  }
}

/* Extra unique touches */
.glow-cyan {
  box-shadow: 0 0 12px -2px var(--accent-cyan);
}

.section-divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border-subtle), transparent);
  margin: 3rem 0;
}