:root {
  --primary-color: #4361ee;
  --primary-dark: #3a56d4;
  --primary-light: #6780f5;
  --secondary-color: #4cc9f0;
  --accent-color: #7209b7;
  --text-dark: #2b2d42;
  --text-light: #8d99ae;
  --text-white: #f8f9fa;
  --background-light: #ffffff;
  --background-gray: #f8f9fa;
  --background-dark: #212529;
  --border-color: #dee2e6;
  --success-color: #38b000;
  --warning-color: #ffbe0b;
  --danger-color: #d90429;
  --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
  --border-radius: 8px;
  --font-family: 'Inter', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--background-light);
}

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

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

ul {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: var(--border-radius);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 16px;
  text-align: center;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--text-white);
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  color: var(--text-white);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}

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

.btn-large {
  padding: 12px 28px;
  font-size: 18px;
}

.btn-block {
  display: block;
  width: 100%;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background-color: var(--background-light);
  box-shadow: var(--box-shadow);
  z-index: 1000;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 40px;
  margin-right: 10px;
}

.logo h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-color);
}

.main-nav ul {
  display: flex;
}

.main-nav li {
  margin-left: 30px;
}

.main-nav a {
  color: var(--text-dark);
  font-weight: 500;
  position: relative;
}

.main-nav a.active,
.main-nav a:hover {
  color: var(--primary-color);
}

.main-nav a.active::after,
.main-nav a:hover::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary-color);
}

.auth-buttons {
  display: flex;
  gap: 10px;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--text-dark);
  margin: 5px 0;
  transition: var(--transition);
}

/* Hero Section */
.hero {
  padding: 80px 0;
  background-color: var(--background-gray);
}

.hero .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.hero-content {
  flex: 1;
}

.hero-content h2 {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.hero-content p {
  font-size: 18px;
  margin-bottom: 30px;
  color: var(--text-light);
}

.hero-buttons {
  display: flex;
  gap: 15px;
}

.hero-image {
  flex: 1;
}

.hero-image img {
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

/* Features Section */
.features {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 50px;
  color: var(--text-dark);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.feature-card {
  background-color: var(--background-light);
  border-radius: var(--border-radius);
  padding: 30px;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

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

.feature-icon {
  width: 70px;
  height: 70px;
  background-color: rgba(67, 97, 238, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon img {
  width: 35px;
  height: 35px;
}

.feature-card h3 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 15px;
}

.feature-card p {
  color: var(--text-light);
}

/* CTA Section */
.cta {
  padding: 80px 0;
  background-color: var(--primary-color);
  color: var(--text-white);
  text-align: center;
}

.cta h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 20px;
}

.cta p {
  font-size: 18px;
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.cta .btn-primary {
  background-color: var(--text-white);
  color: var(--primary-color);
}

.cta .btn-primary:hover {
  background-color: rgba(255, 255, 255, 0.9);
}

/* About Section */
.about {
  padding: 80px 0;
  background-color: var(--background-gray);
}

.about .container {
  display: flex;
  align-items: center;
  gap: 40px;
}

.about-content {
  flex: 1;
}

.about-content .section-title {
  text-align: left;
  margin-bottom: 30px;
}

.about-content p {
  margin-bottom: 20px;
  color: var(--text-light);
}

.about-image {
  flex: 1;
}

.about-image img {
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

/* Testimonials Section */
.testimonials {
  padding: 80px 0;
}

.testimonials-slider {
  display: flex;
  overflow-x: hidden;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
}

.testimonial {
  flex: 0 0 100%;
  scroll-snap-align: start;
  padding: 20px;
}

.testimonial-content {
  background-color: var(--background-light);
  border-radius: var(--border-radius);
  padding: 30px;
  box-shadow: var(--box-shadow);
  margin-bottom: 20px;
  position: relative;
}

.testimonial-content::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 30px;
  width: 20px;
  height: 20px;
  background-color: var(--background-light);
  transform: rotate(45deg);
}

.testimonial-content p {
  font-style: italic;
  font-size: 18px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  margin-left: 30px;
}

.testimonial-author img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  margin-right: 15px;
}

.testimonial-author h4 {
  font-weight: 600;
  margin-bottom: 5px;
}

.testimonial-author p {
  color: var(--text-light);
  font-size: 14px;
}

.testimonial-dots {
  display: flex;
  justify-content: center;
  margin-top: 30px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--border-color);
  margin: 0 5px;
  cursor: pointer;
  transition: var(--transition);
}

.dot.active {
  background-color: var(--primary-color);
}

/* Contact Section */
.contact {
  padding: 80px 0;
  background-color: var(--background-gray);
}

.contact-container {
  display: flex;
  gap: 40px;
}

.contact-form {
  flex: 2;
  background-color: var(--background-light);
  border-radius: var(--border-radius);
  padding: 30px;
  box-shadow: var(--box-shadow);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-family: var(--font-family);
  font-size: 16px;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.contact-info {
  flex: 1;
}

.info-item {
  display: flex;
  align-items: center;
  margin-bottom: 30px;
}

.info-icon {
  width: 50px;
  height: 50px;
  background-color: rgba(67, 97, 238, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 15px;
}

.info-icon img {
  width: 25px;
  height: 25px;
}

.info-item h4 {
  font-weight: 600;
  margin-bottom: 5px;
}

.info-item p {
  color: var(--text-light);
}

/* Footer */
.footer {
  background-color: var(--background-dark);
  color: var(--text-white);
  padding: 60px 0 20px;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  margin-bottom: 40px;
}

.footer-logo {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}

.footer-logo img {
  height: 40px;
  margin-right: 10px;
}

.footer-logo h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-white);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
}

.footer-column h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-white);
}

.footer-column ul li {
  margin-bottom: 10px;
}

.footer-column ul li a {
  color: var(--text-light);
  transition: var(--transition);
}

.footer-column ul li a:hover {
  color: var(--text-white);
}

.footer-newsletter h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-white);
}

.footer-newsletter form {
  display: flex;
  margin-bottom: 20px;
}

.footer-newsletter input {
  flex: 1;
  padding: 12px;
  border: none;
  border-radius: var(--border-radius) 0 0 var(--border-radius);
  font-family: var(--font-family);
  font-size: 16px;
}

.footer-newsletter button {
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

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

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

.social-media a:hover {
  background-color: var(--primary-color);
}

.social-media img {
  width: 20px;
  height: 20px;
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-light);
}

/* Modals */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  overflow-y: auto;
}

.modal-content {
  background-color: var(--background-light);
  margin: 50px auto;
  padding: 30px;
  border-radius: var(--border-radius);
  max-width: 500px;
  position: relative;
}

.close-modal {
  position: absolute;
  top: 15px;
  right: 20px;
  font-size: 28px;
  cursor: pointer;
  color: var(--text-light);
}

.modal h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 20px;
  text-align: center;
}

.remember-forgot {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.remember-me {
  display: flex;
  align-items: center;
}

.remember-me input {
  margin-right: 5px;
}

.forgot-password {
  color: var(--primary-color);
  font-size: 14px;
}

.modal-footer {
  text-align: center;
  margin-top: 20px;
  color: var(--text-light);
}

.modal-footer a {
  color: var(--primary-color);
  font-weight: 500;
}

.terms {
  display: flex;
  align-items: flex-start;
}

.terms input {
  margin-right: 10px;
  margin-top: 5px;
}

/* Responsive Design */
@media (max-width: 992px) {
  .hero .container,
  .about .container,
  .contact-container {
    flex-direction: column;
  }
  
  .hero-image,
  .about-image {
    margin-top: 40px;
  }
  
  .footer-content {
    flex-direction: column;
  }
  
  .footer-links {
    margin: 30px 0;
  }
}

@media (max-width: 768px) {
  .main-nav,
  .auth-buttons {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .hero-content h2 {
    font-size: 36px;
  }
  
  .section-title {
    font-size: 30px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-links {
    flex-direction: column;
    gap: 20px;
  }
}

@media (max-width: 576px) {
  .hero-buttons {
    flex-direction: column;
  }
  
  .hero-content h2 {
    font-size: 28px;
  }
  
  .cta h2 {
    font-size: 28px;
  }
  
  .footer-newsletter form {
    flex-direction: column;
  }
  
  .footer-newsletter input,
  .footer-newsletter button {
    border-radius: var(--border-radius);
  }
  
  .footer-newsletter button {
    margin-top: 10px;
  }
}