/* Demo Header */
.demo-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: white;
  padding: 4rem 0;
}

.demo-hero {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: center;
}

.demo-hero-content {
  max-width: 600px;
}

.demo-width {
  max-width: 1640px;
      margin: 0 auto;
    padding: 20px;
}

.demo-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.demo-subtitle {
  font-size: 1.2rem;
  opacity: 0.9;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.demo-features {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.feature-badge {
  background: rgba(255, 255, 255, 0.2);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.demo-hero-icon {
  font-size: 8rem;
  opacity: 0.8;
}

/* Modern Tabs */
.demo-tabs-section {
  padding: 3rem 0;
  background: var(--bg-color);
}

.modern-tabs {
  background: var(--white);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--light-gray);
}

.tab-nav {
  display: flex;
  background: var(--light);
  border-bottom: 1px solid var(--light-gray);
  overflow-x: auto;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem 2rem;
  background: transparent;
  border: none;
  color: var(--gray);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
  border-bottom: 3px solid transparent;
}

.tab-btn:hover {
  color: var(--primary);
  background: rgba(122, 21, 21, 0.05);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  background: var(--white);
}

.tab-content-wrapper {
  padding: 3rem;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.5s ease;
}

/* Video Section */
.video-wrapper {
  margin: 2rem 0;
  overflow: hidden;
}

.video-wrapper video {
  width: 100%;
  border-radius: 2em;
  display: block;
}

.next-tab-btn {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  border: none;
  padding: 0.6rem 0.8rem;
  border-radius: 2rem;
  display: inline-block;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  letter-spacing: 0.1rem;
  text-decoration: none;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(122, 21, 21, 0.3);
}

.next-tab-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(122, 21, 21, 0.4);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.tab-header {
  text-align: center;
  margin-bottom: 3rem;
}

.tab-header h2 {
  font-size: 2.5rem;
  color: var(--dark);
  margin-bottom: 1rem;
}

.tab-header p {
  font-size: 1.1rem;
  color: var(--gray);
}

/* Overview Grid */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.overview-card {
  text-align: center;
  padding: 2rem;
  background: var(--light);
  border-radius: 16px;
  border: 1px solid var(--light-gray);
  transition: transform 0.3s ease;
}

.overview-card:hover {
  transform: translateY(-5px);
}

.overview-card i {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.overview-card h4 {
  font-size: 1.2rem;
  color: var(--dark);
  margin-bottom: 1rem;
}

.overview-card p {
  color: var(--gray);
  line-height: 1.6;
}

/* Features Section */
.features-section {
  margin-bottom: 3rem;
}

.features-section h3 {
  font-size: 1.8rem;
  color: var(--dark);
  margin-bottom: 2rem;
  text-align: center;
}

.features-grid {
  display: grid;
  gap: 1.5rem;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--light);
  border-radius: 12px;
  border: 1px solid var(--light-gray);
}

.feature-item i {
  font-size: 1.5rem;
  color: var(--primary);
  margin-top: 0.25rem;
}

.feature-item h5 {
  font-size: 1.1rem;
  color: var(--dark);
  margin-bottom: 0.5rem;
}

.feature-item p {
  color: var(--gray);
  line-height: 1.6;
  margin: 0;
}

/* Demo Preview */
.demo-preview {
  margin-bottom: 3rem;
}

.preview-header {
  text-align: center;
  margin-bottom: 2rem;
}

.preview-header h4 {
  font-size: 1.5rem;
  color: var(--dark);
  margin-bottom: 0.5rem;
}

.preview-header p {
  color: var(--gray);
}

.gif-container {
  position: relative;
  margin: 0 auto;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.gif-container img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.3s ease;
}

.gif-container:hover img {
  transform: scale(1.02);
}

.gif-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.gif-container:hover .gif-overlay {
  opacity: 1;
}

.play-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  border: none;
  color: var(--primary);
  font-size: 1.5rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.play-btn:hover {
  background: white;
  transform: scale(1.1);
}

/* Modules Grid */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.module-card {
  padding: 2rem;
  background: var(--light);
  border-radius: 12px;
  border: 1px solid var(--light-gray);
  text-align: center;
  transition: all 0.3s ease;
}

.module-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.module-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, rgba(122, 21, 21, 0.1), rgba(197, 48, 48, 0.1));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  font-size: 1.5rem;
  color: var(--primary);
}

.module-card h4 {
  font-size: 1.2rem;
  color: var(--dark);
  margin-bottom: 1rem;
}

.module-card p {
  color: var(--gray);
  line-height: 1.6;
  margin: 0;
}

/* Navigation */
.demo-navigation {
  padding: 2rem 0;
  background: var(--white);
  border-top: 1px solid var(--light-gray);
}

.nav-buttons {
  display: flex;
  justify-content: space-between;
  max-width: 400px;
  margin: 0 auto;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.nav-btn:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 768px) {
  .demo-hero {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .demo-title {
    font-size: 2.5rem;
  }
  
  .demo-hero-icon {
    font-size: 5rem;
  }
  
  .tab-nav {
    flex-direction: column;
  }
  
  .tab-btn {
    justify-content: center;
  }
  
  .tab-content-wrapper {
    padding: 2rem 1.5rem;
  }
  
  .overview-grid {
    grid-template-columns: 1fr;
  }
  
  .modules-grid {
    grid-template-columns: 1fr;
  }
}

/* Dark Mode Support */
[data-theme="dark"] .modern-tabs {
  background: var(--card-bg);
  border-color: var(--border-color);
}

[data-theme="dark"] .tab-nav {
  background: var(--second-bg-color);
  border-color: var(--border-color);
}

[data-theme="dark"] .tab-btn.active {
  background: var(--card-bg);
}

[data-theme="dark"] .overview-card,
[data-theme="dark"] .feature-item,
[data-theme="dark"] .module-card {
  background: var(--second-bg-color);
  border-color: var(--border-color);
}

/* Session Tab Styles */
.session-features {
  margin-top: 2rem;
}

.feature-grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 3rem;
}

.feature-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2rem;
  padding: 2rem;
  background: var(--light);
  border-radius: 16px;
  border: 1px solid var(--light-gray);
  align-items: start;
}

.feature-icon {
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, rgba(122, 21, 21, 0.1), rgba(197, 48, 48, 0.1));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--primary);
}

.feature-content h4 {
  font-size: 1.4rem;
  color: var(--dark);
  margin-bottom: 1rem;
}

.feature-content p {
  color: var(--gray);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.feature-sublist {
  list-style: none;
  padding: 0;
  margin: 0;
}

.feature-sublist li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
  color: var(--gray);
}

.feature-sublist i {
  color: var(--primary);
  font-size: 0.9rem;
}

.security-section {
  margin: 3rem 0;
}

.security-section h3 {
  font-size: 1.8rem;
  color: var(--dark);
  margin-bottom: 2rem;
  text-align: center;
}

.security-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.security-item {
  text-align: center;
  padding: 2rem 1.5rem;
  background: var(--white);
  border-radius: 12px;
  border: 1px solid var(--light-gray);
  transition: transform 0.3s ease;
}

.security-item:hover {
  transform: translateY(-5px);
}

.security-item i {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.security-item h5 {
  font-size: 1.2rem;
  color: var(--dark);
  margin-bottom: 1rem;
}

.security-item p {
  color: var(--gray);
  line-height: 1.6;
  margin: 0;
}

.procedure-section {
  margin-top: 3rem;
}

.procedure-section h3 {
  font-size: 1.8rem;
  color: var(--dark);
  margin-bottom: 2rem;
  text-align: center;
}

.procedure-steps {
  display: grid;
  gap: 2rem;
  max-width: 800px;
  margin: 0 auto;
}

.step {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}

.step-number {
  width: 50px;
  height: 50px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  flex-shrink: 0;
}

.step-content h5 {
  font-size: 1.3rem;
  color: var(--dark);
  margin-bottom: 0.75rem;
}

.step-content p {
  color: var(--gray);
  line-height: 1.6;
  margin: 0;
}

/* System Tab Styles */
.system-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.system-card {
  padding: 2.5rem 2rem;
  background: var(--white);
  border-radius: 16px;
  border: 1px solid var(--light-gray);
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.system-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.system-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, rgba(122, 21, 21, 0.1), rgba(197, 48, 48, 0.1));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 2rem;
  color: var(--primary);
}

.system-card h4 {
  font-size: 1.4rem;
  color: var(--dark);
  margin-bottom: 1rem;
}

.system-card p {
  color: var(--gray);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.system-details {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.detail-tag {
  padding: 0.4rem 0.8rem;
  background: rgba(122, 21, 21, 0.08);
  color: var(--primary);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid rgba(122, 21, 21, 0.2);
}

.configuration-section {
  margin: 3rem 0;
}

.configuration-section h3 {
  font-size: 1.8rem;
  color: var(--dark);
  margin-bottom: 2rem;
  text-align: center;
}

.config-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 1.5rem;
}

.config-item {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  padding: 1.5rem;
  background: var(--light);
  border-radius: 12px;
  border: 1px solid var(--light-gray);
  transition: transform 0.3s ease;
}

.config-item:hover {
  transform: translateX(10px);
}

.config-item i {
  font-size: 1.8rem;
  color: var(--primary);
  margin-top: 0.25rem;
}

.config-content h5 {
  font-size: 1.2rem;
  color: var(--dark);
  margin-bottom: 0.5rem;
}

.config-content p {
  color: var(--gray);
  line-height: 1.6;
  margin: 0;
}

.enterprise-features {
  margin: 3rem 0;
}

.enterprise-features h3 {
  font-size: 1.8rem;
  color: var(--dark);
  margin-bottom: 2rem;
  text-align: center;
}

.enterprise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.enterprise-card {
  padding: 2rem;
  background: var(--white);
  border-radius: 12px;
  border: 1px solid var(--light-gray);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.enterprise-card h5 {
  font-size: 1.3rem;
  color: var(--dark);
  margin-bottom: 1rem;
}

.enterprise-card p {
  color: var(--gray);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.enterprise-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.enterprise-card li {
  padding: 0.5rem 0;
  color: var(--gray);
  border-bottom: 1px solid var(--light-gray);
}

.enterprise-card li:last-child {
  border-bottom: none;
}

.enterprise-card li::before {
  content: '✓';
  color: var(--primary);
  font-weight: bold;
  margin-right: 0.75rem;
}

.integration-section {
  margin-top: 3rem;
}

.integration-section h3 {
  font-size: 1.8rem;
  color: var(--dark);
  margin-bottom: 2rem;
  text-align: center;
}

.integration-features {
  display: grid;
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.integration-item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem;
  background: var(--light);
  border-radius: 12px;
  border: 1px solid var(--light-gray);
}

.integration-item i {
  font-size: 2rem;
  color: var(--primary);
}

.integration-item h5 {
  font-size: 1.2rem;
  color: var(--dark);
  margin-bottom: 0.5rem;
}

.integration-item p {
  color: var(--gray);
  line-height: 1.6;
  margin: 0;
}

/* Dark Mode Support */
[data-theme="dark"] .feature-card,
[data-theme="dark"] .security-item,
[data-theme="dark"] .system-card,
[data-theme="dark"] .config-item,
[data-theme="dark"] .enterprise-card,
[data-theme="dark"] .integration-item {
  background: var(--second-bg-color);
  border-color: var(--border-color);
}

[data-theme="dark"] .detail-tag {
  background: rgba(229, 62, 62, 0.15);
  color: var(--primary-light);
  border-color: rgba(229, 62, 62, 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
  
  .feature-card {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 1.5rem;
  }
  
  .security-grid {
    grid-template-columns: 1fr;
  }
  
  .step {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }
  
  .system-grid {
    grid-template-columns: 1fr;
  }
  
  .config-grid {
    grid-template-columns: 1fr;
  }
  
  .enterprise-grid {
    grid-template-columns: 1fr;
  }
  
  .integration-item {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }
}