:root {
  --primary-color: #002f6c;
  --secondary-color: #0051c3;
  --accent-color: #ff6b35;
  --text-dark: #1a1a1a;
  --text-light: #666;
  --bg-light: #f8f9fa;
}

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

body {
  font-family: 'Inter', sans-serif;
  color: var(--text-dark);
  line-height: 1.7;
  overflow-x: hidden;
}

/* Loading Screen */
#loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--primary-color);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

#loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader {
  width: 60px;
  height: 60px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top: 4px solid #fff;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}


/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

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

.hero-section h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 24px;
  line-height: 1.2;
}

.hero-section p {
  font-size: 1.3rem;
  opacity: 0.95;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Content Sections */
.content-section {
  padding: 80px 0;
}

.content-section:nth-child(even) {
  background: var(--bg-light);
}

.section-heading {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 30px;
  line-height: 1.3;
}

.section-content {
  font-size: 1.1rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 20px;
}

.section-content strong {
  color: var(--text-dark);
  font-weight: 600;
}

/* Feature Lists */
.feature-list {
  list-style: none;
  padding: 0;
  margin: 30px 0;
}

.feature-list li {
  padding: 15px 0 15px 40px;
  position: relative;
  font-size: 1.1rem;
  color: var(--text-light);
  line-height: 1.6;
}


/* Benefits Grid */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin: 40px 0;
}

.benefit-card {
  background: white;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 47, 108, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.benefit-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px rgba(0, 47, 108, 0.15);
}

.benefit-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.benefit-card h3 {
  font-size: 1.3rem;
  color: var(--primary-color);
  margin-bottom: 15px;
  font-weight: 700;
}

.benefit-card p {
  color: var(--text-light);
  line-height: 1.6;
  margin: 0;
}

/* Psychology Section */
.psychology-box {
  background: white;
  border-left: 4px solid var(--primary-color);
  padding: 30px;
  margin: 30px 0;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 47, 108, 0.08);
}

.psychology-item {
  margin-bottom: 25px;
}

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

.psychology-label {
  font-weight: 700;
  color: var(--primary-color);
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.psychology-text {
  color: var(--text-light);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  padding: 80px 0;
  text-align: center;
}

.cta-section h2 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.cta-section p {
  font-size: 1.2rem;
  margin-bottom: 40px;
  opacity: 0.95;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.cta-button {
  display: inline-block;
  background: white;
  color: var(--primary-color);
  padding: 18px 40px;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: 50px;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 30px rgba(0, 0, 0, 0.3);
  color: var(--primary-color);
}

/* Footer Description */
.footer-description {
  background: var(--bg-light);
  padding: 40px 0;
  text-align: center;
}

.footer-description p {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 900px;
  margin: 0 auto;
  line-height: 1.8;
}

/* Scroll to Top Button */
#scrollTopBtn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 1000;
  box-shadow: 0 4px 15px rgba(0, 47, 108, 0.3);
}

#scrollTopBtn.visible {
  opacity: 1;
  visibility: visible;
}

#scrollTopBtn:hover {
  background: var(--secondary-color);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 47, 108, 0.4);
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-section h1 {
    font-size: 2.5rem;
  }
  
  .hero-section p {
    font-size: 1.1rem;
  }
  
  .section-heading {
    font-size: 2rem;
  }
  
  .section-content {
    font-size: 1rem;
  }
  
  .cta-section h2 {
    font-size: 2rem;
  }
  
  .cta-section p {
    font-size: 1rem;
  }
  
  .content-section {
    padding: 50px 0;
  }
}