/* 
  Lydatum AI & Data Consulting
  Main Stylesheet
*/

/* ===== VARIABLES ===== */
:root {
  /* Brand Colors */
  --primary: #1f2b95;
  --secondary: #7b1fa2;
  --primary-light: #4a5bc7;
  --secondary-light: #a051c9;
  --dark: #121212;
  --gray-dark: #333333;
  --gray: #767676;
  --gray-light: #f5f5f7;
  --success: #28a745;
  --warning: #ffc107;
  --danger: #dc3545;
  --white: #ffffff;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary), var(--secondary));
  --gradient-light: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
  
  /* Typography */
  --font-primary: 'Arial', 'Helvetica', sans-serif;
  --font-heading: 'Arial', 'Helvetica', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 5rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ===== RESET & BASE STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--gray-dark);
  background-color: var(--white);
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: var(--primary);
  transition: var(--transition-fast);
}

a:hover {
  color: var(--primary-light);
}

ul, ol {
  list-style-type: none;
}

/* ===== CONTAINER ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
  line-height: 1.3;
}

h1 {
  font-size: 3rem;
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
}

p {
  margin-bottom: var(--spacing-sm);
}

.highlight {
  color: var(--secondary);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-header h2 {
  position: relative;
  display: inline-block;
  padding-bottom: var(--spacing-sm);
}

.section-header h2:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: var(--gradient-primary);
}

.section-header p {
  max-width: 700px;
  margin: var(--spacing-sm) auto 0;
  font-size: 1.1rem;
  color: var(--gray);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-fast);
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--gradient-light);
  box-shadow: var(--shadow-md);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-secondary:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  padding: 0.7rem 1.4rem;
}

.btn-outline:hover {
  background: var(--primary-light);
  color: var(--white);
  border-color: var(--primary-light);
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

/* ===== HEADER & NAVIGATION ===== */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition-normal);
}

header.scrolled {
  padding: 0.5rem 0;
  box-shadow: var(--shadow-md);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: 1px;
  color: var(--primary);
}

.logo a {
  color: var(--primary);
}

#main-nav ul {
  display: flex;
  gap: var(--spacing-md);
}

#main-nav a {
  color: var(--gray-dark);
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
}

#main-nav a:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition-fast);
}

#main-nav a:hover:after,
#main-nav a.active:after {
  width: 100%;
}

.dropdown {
  position: relative;
}

.dropdown-content {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white);
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-sm);
  min-width: 200px;
  padding: var(--spacing-xs) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition-fast);
  z-index: 10;
}

.dropdown:hover .dropdown-content {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-content a {
  display: block;
  padding: 0.75rem var(--spacing-sm) !important;
  color: var(--gray-dark);
}

.dropdown-content a:hover {
  background: var(--gray-light);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 11;
}

.hamburger span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--primary);
  transition: var(--transition-fast);
}

/* ===== HERO SECTION ===== */
.hero {
  background: var(--gradient-primary);
  padding: 8rem 0 5rem;
  color: var(--white);
}

.hero .container {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.hero-content {
  flex: 1;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.9;
}

.hero-image {
  flex: 1;
  text-align: center;
}

/* ===== TRUSTED BY SECTION ===== */
.trusted-by {
  padding: var(--spacing-lg) 0;
  background: var(--gray-light);
}

.trusted-by h2 {
  text-align: center;
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--gray);
}

.client-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.logo-item {
  opacity: 0.7;
  transition: var(--transition-fast);
}

.logo-item:hover {
  opacity: 1;
}

/* ===== SERVICES OVERVIEW ===== */
.services-overview {
  padding: var(--spacing-xl) 0;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.service-card {
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-md);
}

.testimonial-item .quote {
  margin-bottom: var(--spacing-sm);
}

.testimonial-item .quote i {
  color: var(--primary);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

.testimonial-item .quote p {
  font-style: italic;
}

.client-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.client-info img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
}

.client-info h4 {
  margin-bottom: 0;
}

.client-info p {
  font-size: 0.9rem;
  margin-bottom: 0;
  color: var(--gray);
}

/* ===== CTA SECTION ===== */
.cta-section {
  padding: var(--spacing-xl) 0;
  background: var(--gradient-primary);
  color: var(--white);
  text-align: center;
}

.cta-content h2 {
  margin-bottom: var(--spacing-sm);
}

.cta-content p {
  max-width: 600px;
  margin: 0 auto var(--spacing-md);
  opacity: 0.9;
}

/* ===== BLOG PREVIEW ===== */
.blog-preview {
  padding: var(--spacing-xl) 0;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.blog-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

.blog-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.blog-image {
  height: 200px;
  overflow: hidden;
}

.blog-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-normal);
}

.blog-card:hover .blog-image img {
  transform: scale(1.1);
}

.blog-content {
  padding: var(--spacing-md);
}

.category {
  display: inline-block;
  background: var(--secondary-light);
  color: var(--white);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.85rem;
  margin-bottom: var(--spacing-xs);
}

.blog-content h3 {
  margin-bottom: var(--spacing-xs);
  line-height: 1.4;
}

.blog-content p {
  color: var(--gray);
  margin-bottom: var(--spacing-sm);
}

.blog-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--gray);
  font-size: 0.9rem;
}

/* ===== NEWSLETTER ===== */
.newsletter {
  padding: var(--spacing-lg) 0;
  background: var(--gray-light);
}

.newsletter-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.newsletter-content h2 {
  margin-bottom: var(--spacing-xs);
}

.newsletter-content p {
  margin-bottom: var(--spacing-md);
}

.newsletter-form {
  display: flex;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-xs);
}

.newsletter-form input {
  flex: 1;
  padding: 0.75rem;
  border: 1px solid var(--gray);
  border-radius: var(--radius-sm);
  font-size: 1rem;
}

.privacy-note {
  font-size: 0.8rem;
  color: var(--gray);
}

/* ===== FOOTER ===== */
footer {
  background: var(--dark);
  color: var(--white);
  padding: var(--spacing-lg) 0 var(--spacing-sm);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.footer-about {
  grid-column: span 2;
}

.footer-about .logo {
  color: var(--white);
  margin-bottom: var(--spacing-sm);
}

.footer-about p {
  opacity: 0.8;
  margin-bottom: var(--spacing-sm);
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: var(--white);
  transition: var(--transition-fast);
}

.social-links a:hover {
  background: var(--primary);
  transform: translateY(-3px);
}

.footer-links h3,
.footer-services h3,
.footer-contact h3 {
  color: var(--white);
  margin-bottom: var(--spacing-sm);
  font-size: 1.2rem;
}

.footer-links ul,
.footer-services ul,
.footer-contact ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a,
.footer-services a {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition-fast);
}

.footer-links a:hover,
.footer-services a:hover {
  color: var(--white);
  padding-left: 5px;
}

.footer-contact ul li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 0.5rem;
}

.footer-contact ul li i {
  color: var(--primary-light);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  margin-bottom: 0;
  font-size: 0.9rem;
  opacity: 0.7;
}

.footer-bottom-links {
  display: flex;
  gap: var(--spacing-md);
}

.footer-bottom-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

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

/* ===== RESPONSIVE STYLES ===== */
@media (max-width: 992px) {
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .hero {
    padding: 7rem 0 4rem;
  }
  
  .hero .container {
    flex-direction: column;
  }
  
  .hero-content, .hero-image {
    text-align: center;
    max-width: 100%;
  }
  
  .cta-buttons {
    justify-content: center;
  }
  
  .footer-about {
    grid-column: span 1;
  }
}

@media (max-width: 768px) {
  #main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    background: var(--white);
    box-shadow: var(--shadow-lg);
    padding: 5rem var(--spacing-md) var(--spacing-md);
    transition: var(--transition-normal);
    z-index: 10;
  }
  
  #main-nav.active {
    right: 0;
  }
  
  #main-nav ul {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .dropdown-content {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    padding-left: var(--spacing-md);
    display: none;
  }
  
  .dropdown.active .dropdown-content {
    display: block;
  }
  
  .hamburger {
    display: flex;
  }
  
  .hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .hamburger.active span:nth-child(2) {
    opacity: 0;
  }
  
  .hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  .case-studies-grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
  }
}

@media (max-width: 576px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .hero {
    padding: 6rem 0 3rem;
  }
  
  .cta-buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .cta-buttons .btn {
    width: 100%;
  }
  
  .newsletter-form {
    flex-direction: column;
  }
  
  .newsletter-form .btn {
    width: 100%;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .testimonial-carousel {
    grid-template-columns: 1fr;
  }
}
shadow: var(--shadow-md);
  padding: var(--spacing-md);
  transition: var(--transition-normal);
  text-align: center;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.service-card .icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--primary);
}

.service-card h3 {
  margin-bottom: var(--spacing-sm);
}

.service-card p {
  color: var(--gray);
  margin-bottom: var(--spacing-md);
}

.read-more {
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.read-more i {
  transition: var(--transition-fast);
}

.read-more:hover i {
  transform: translateX(5px);
}

/* ===== CASE STUDIES PREVIEW ===== */
.case-studies-preview {
  padding: var(--spacing-xl) 0;
  background: var(--gray-light);
}

.case-studies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-md);
}

.case-study-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

.case-study-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.case-study-image {
  height: 200px;
  overflow: hidden;
}

.case-study-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-normal);
}

.case-study-card:hover .case-study-image img {
  transform: scale(1.1);
}

.case-study-content {
  padding: var(--spacing-md);
}

.industry {
  display: inline-block;
  background: var(--primary-light);
  color: var(--white);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.85rem;
  margin-bottom: var(--spacing-xs);
}

.case-study-content h3 {
  margin-bottom: var(--spacing-xs);
}

.case-study-content p {
  color: var(--gray);
  margin-bottom: var(--spacing-sm);
}

.view-all-container {
  text-align: center;
  margin-top: var(--spacing-lg);
}

/* ===== TESTIMONIALS ===== */
.testimonials {
  padding: var(--spacing-xl) 0;
}

.testimonial-carousel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.testimonial-item {
  background: var(--white);
  border-radius: var(--radius-md);
  box-