/* Updated elegant styles for AI Deep Economics */

:root {
  --primary-color: #1a365d;
  --secondary-color: #2a4a7f;
  --accent-color: #4a6fa5;
  --light-color: #f8f9fa;
  --dark-color: #212529;
  --text-color: #333;
  --border-radius: 4px;
  --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  --transition: all 0.3s ease;
}

body {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-color);
  background-color: #fff;
}

h1 {
  font-size: 2rem;
  font-weight: 700;
}

h2 {
  font-size: 1.6rem;
  font-weight: 600;
}

h3 {
  font-size: 1.3rem;
  font-weight: 600;
}

h4 {
  font-size: 1.1rem;
  font-weight: 600;
}

p {
  font-size: 0.95rem;
  line-height: 1.6;
}

.lead {
  font-size: 1.1rem;
}

.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Styles */
.sidebar {
  width: 260px;
  background-color: var(--primary-color);
  color: white;
  transition: var(--transition);
  z-index: 1000;
  box-shadow: var(--box-shadow);
}

.sidebar-header {
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
  height: 40px;
  width: auto;
}

.sidebar-toggle {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  font-size: 1.2rem;
}

.nav-section {
  padding: 15px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-section-title {
  padding: 0 20px;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 10px;
}

.nav-item {
  display: flex;
  align-items: center;
  padding: 10px 20px;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: var(--transition);
}

.nav-item i {
  margin-right: 10px;
  font-size: 0.9rem;
}

.nav-item:hover, .nav-item.active {
  background-color: var(--secondary-color);
  color: white;
}

/* Main Content Styles */
.main-content {
  flex: 1;
  background-color: #f5f7fa;
  overflow-x: hidden;
}

.content-header {
  background-color: white;
  padding: 15px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--box-shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
}

.mobile-sidebar-toggle {
  background: none;
  border: none;
  font-size: 1.2rem;
  margin-right: 15px;
  cursor: pointer;
  display: none;
}

.search-box {
  display: flex;
  align-items: center;
  background-color: #f5f7fa;
  border-radius: var(--border-radius);
  padding: 5px 10px;
}

.search-box button {
  background: none;
  border: none;
  color: #6c757d;
  cursor: pointer;
}

.search-box input {
  border: none;
  background: none;
  padding: 5px;
  outline: none;
  width: 200px;
}

.header-right {
  display: flex;
  align-items: center;
}

.header-actions {
  display: flex;
  align-items: center;
}

.header-action {
  background: none;
  border: none;
  color: #6c757d;
  font-size: 1.1rem;
  margin-left: 15px;
  position: relative;
  cursor: pointer;
}

.badge {
  position: absolute;
  top: -5px;
  right: -5px;
  background-color: var(--accent-color);
  color: white;
  font-size: 0.7rem;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.content-wrapper {
  padding: 20px;
}

/* Hero Section */
.hero-section {
  background-color: white;
  border-radius: var(--border-radius);
  padding: 30px;
  margin-bottom: 20px;
  box-shadow: var(--box-shadow);
}

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

.hero-actions {
  margin-top: 20px;
  display: flex;
  gap: 10px;
}

/* News Ticker */
.news-ticker {
  background-color: var(--primary-color);
  color: white;
  padding: 10px 20px;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  margin-bottom: 20px;
  box-shadow: var(--box-shadow);
}

.news-ticker-label {
  font-weight: 600;
  margin-right: 15px;
  white-space: nowrap;
}

.news-ticker-content {
  overflow: hidden;
}

/* Content Section */
.content-section {
  background-color: white;
  border-radius: var(--border-radius);
  padding: 25px;
  margin-bottom: 20px;
  box-shadow: var(--box-shadow);
}

.section-title {
  margin-bottom: 20px;
  color: var(--primary-color);
  position: relative;
  padding-bottom: 10px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 3px;
  background-color: var(--accent-color);
}

/* Content Grid */
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

/* Cards */
.card {
  border: none;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.research-card {
  height: 100%;
}

.research-card h3 {
  color: var(--primary-color);
}

.card-link {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
}

.card-link i {
  margin-left: 5px;
  transition: var(--transition);
}

.card-link:hover i {
  transform: translateX(3px);
}

.dark-blue-text {
  color: var(--primary-color);
}

/* Expertise Cards */
.expertise-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.expertise-cards h3 {
  color: var(--primary-color);
}

/* Contact Page Styles */
.contact-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 30px;
}

.custom-form .form-label {
  font-weight: 500;
  color: var(--primary-color);
  font-size: 0.9rem;
}

.custom-form .form-control,
.custom-form .form-select {
  border: 1px solid #e2e8f0;
  border-radius: var(--border-radius);
  padding: 12px 15px;
  font-size: 0.95rem;
  transition: var(--transition);
  background-color: #f8fafc;
}

.custom-form .form-control:focus,
.custom-form .form-select:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(74, 111, 165, 0.1);
  background-color: #fff;
}

.calendly-placeholder {
  background-color: #f8fafc;
  border: 2px dashed #e2e8f0;
  border-radius: var(--border-radius);
  padding: 40px 20px;
  text-align: center;
  transition: var(--transition);
}

.calendly-placeholder:hover {
  border-color: var(--accent-color);
  background-color: #f1f5f9;
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  margin-bottom: 20px;
}

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

.info-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(74, 111, 165, 0.1);
  color: var(--accent-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

@media (max-width: 992px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.icon-wrapper {
  width: 50px;
  height: 50px;
  background-color: rgba(74, 111, 165, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 15px;
  color: var(--accent-color);
  font-size: 1.2rem;
}

/* Publications List */
.publications-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.publication-item {
  padding: 15px;
  border-radius: var(--border-radius);
  background-color: #f8f9fa;
  transition: var(--transition);
}

.publication-item:hover {
  background-color: #e9ecef;
}

.publication-date {
  font-size: 0.8rem;
  color: #6c757d;
}

.publication-title {
  margin: 5px 0;
  font-size: 1.1rem;
  color: var(--primary-color);
}

.publication-authors {
  font-size: 0.9rem;
  color: #495057;
  margin-bottom: 10px;
}

.publication-link {
  font-size: 0.9rem;
  color: var(--accent-color);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.publication-link i {
  margin-left: 5px;
  font-size: 0.8rem;
}

/* CTA Section */
.cta-section .card {
  background-color: #f8f9fa;
  border: none;
}

/* Footer */
.footer {
  background-color: var(--dark-color);
  color: white;
  padding: 40px 20px 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.footer h4 {
  margin-bottom: 15px;
  font-size: 1rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
  height: 30px;
  width: auto;
}

.copyright {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.7);
}

.social-links {
  display: flex;
  gap: 15px;
}

.social-link {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.1rem;
  transition: var(--transition);
}

.social-link:hover {
  color: white;
}

/* Infinite Carousel for Partners */
.partners-carousel-container {
  overflow: hidden;
  width: 100%;
  padding: 20px 0;
  background: white;
}

.partners-carousel-track {
  display: flex;
  gap: 40px;
  animation: scroll 20s linear infinite;
  width: max-content;
}

.partners-carousel-track img {
  height: 60px;
  width: auto;
  object-fit: contain;
  transition: opacity 0.3s ease;
}

.partners-carousel-track img:hover {
  opacity: 0.8;
}

/* App Carousel Styles */
.app-carousel-track {
  display: flex;
  gap: 20px;
  animation: scroll 20s linear infinite;
  width: max-content;
}

.app-carousel-track img {
  height: 300px;
  width: auto;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

@keyframes scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}


/* Partners showcase for homepage */
.partners-showcase {
  padding: 25px 0;
  background-color: white;
  margin-top: 20px;
}

.partners-showcase h2 {
  text-align: center;
  margin-bottom: 25px;
  font-size: 1.6rem;
}

.partners-slider {
  display: flex;
  flex-wrap: nowrap;
  overflow-x: auto;
  padding: 15px 0;
  scrollbar-width: none; /* Firefox */
}

.partners-slider::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Edge */
}

.partner-slide {
  flex: 0 0 auto;
  width: 150px;
  margin: 0 15px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.partner-slide img {
  max-width: 100%;
  max-height: 70px;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.7;
  transition: all 0.3s ease;
}

.partner-slide img:hover {
  filter: grayscale(0);
  opacity: 1;
}

/* Responsive Styles */
@media (max-width: 992px) {
  .sidebar {
    position: fixed;
    left: -260px;
    height: 100%;
  }
  
  .sidebar-collapsed {
    left: 0;
  }
  
  .mobile-sidebar-toggle {
    display: block;
  }
  
  .search-box input {
    width: 150px;
  }
}

@media (max-width: 768px) {
  .content-grid, .expertise-cards {
    grid-template-columns: 1fr;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }
}

@media (max-width: 576px) {
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  .search-box {
    display: none;
  }
}

/* Infinite Marquee Animation */
.marquee-container {
  overflow: hidden;
  white-space: nowrap;
  width: 100%;
  position: relative;
  padding: 10px 0;
}

.marquee-track {
  display: flex;
  align-items: stretch;
  gap: 20px;
  animation: marquee 30s linear infinite;
  width: max-content;
}

.marquee-track:hover {
  animation-play-state: paused;
}

.marquee-track .card {
  width: 400px;
  flex-shrink: 0;
  white-space: normal;
  height: auto;
  display: flex;
  flex-direction: column;
}

.marquee-track .card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.marquee-track .card-link {
  margin-top: auto;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(-50% - 10px)); }
}

.card strong,
.card b,
.publication-card strong,
.publication-card b {
  color: #1a365d;
}