:root {
  --primary-color: #324ae2;
  --secondary-color: #2339cc;
  --accent-color: #4bebb5;
  --text-color: #333;
  --light-text: #666;
  --bg-color: #fff;
  --light-bg: #f7f9fc;
  --border-color: #e1e4e8;
  --gradient: linear-gradient(135deg, #324ae2 0%, #2339cc 100%);
  --shadow: 0 10px 30px rgba(50, 74, 226, 0.15);
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(5px);
}

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

.logo img {
  height: 45px;
  width: auto;
}

nav ul {
  display: flex;
  list-style: none;
}

nav ul li {
  margin-left: 40px;
}

nav ul li a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  position: relative;
  transition: color 0.3s;
}

nav ul li a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width 0.3s;
}

nav ul li a:hover {
  color: var(--primary-color);
}

nav ul li a:hover::after {
  width: 100%;
}

.sign-in-btn {
  background-color: var(--primary-color);
  color: white !important;
  padding: 10px 24px;
  border-radius: 6px;
  transition: all 0.3s;
  box-shadow: 0 4px 15px rgba(50, 74, 226, 0.2);
}

.sign-in-btn:hover {
  background-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(50, 74, 226, 0.3);
}

/* Hero Section */
.hero-section {
  background: var(--gradient);
  color: white;
  padding: 160px 0 120px;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

.hero-content h1 {
  font-size: 3.2rem;
  font-weight: 700;
  margin-bottom: 25px;
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.hero-content p {
  font-size: 1.3rem;
  margin-bottom: 40px;
  opacity: 0.9;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.cta-button {
  display: inline-block;
  background-color: white;
  color: var(--primary-color);
  padding: 16px 48px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
  border: none;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.cta-button::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 0;
  background-color: rgba(50, 74, 226, 0.08);
  transition: all 0.3s;
  z-index: -1;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
  color: var(--secondary-color);
}

.cta-button:hover::after {
  height: 100%;
}

/* Features Section */
.features {
  padding: 120px 0;
  background-color: var(--light-bg);
}

.features h2 {
  text-align: center;
  margin-bottom: 60px;
  font-size: 2.5rem;
  color: var(--text-color);
  position: relative;
  padding-bottom: 15px;
}

.features h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: var(--primary-color);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
}

.feature-card {
  background-color: var(--bg-color);
  padding: 40px 30px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  transition: all 0.4s;
  border: 1px solid rgba(0, 0, 0, 0.03);
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow);
  border-color: rgba(50, 74, 226, 0.1);
}

.feature-card h3 {
  margin-bottom: 20px;
  color: var(--primary-color);
  font-size: 1.5rem;
}

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

/* About Section */
.about {
  padding: 120px 0;
  text-align: center;
  background-color: var(--bg-color);
}

.about h2 {
  margin-bottom: 30px;
  font-size: 2.5rem;
  color: var(--text-color);
  position: relative;
  padding-bottom: 15px;
  display: inline-block;
}

.about h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: var(--primary-color);
}

.about p {
  max-width: 800px;
  margin: 0 auto 60px;
  font-size: 1.2rem;
  color: var(--light-text);
  line-height: 1.8;
}

.benefits {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  margin-top: 40px;
}

.benefit-item {
  flex: 1;
  min-width: 300px;
  max-width: 350px;
  background-color: var(--light-bg);
  padding: 35px 30px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  text-align: left;
  transition: transform 0.3s;
}

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

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

.benefit-item p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.6;
}

/* Tech Section */
.security-section {
  padding: 120px 0;
  background-color: var(--light-bg);
  text-align: center;
}

.security-section h2 {
  margin-bottom: 50px;
  font-size: 2.5rem;
  color: var(--text-color);
  position: relative;
  padding-bottom: 15px;
  display: inline-block;
}

.security-section h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: var(--primary-color);
}

.security-features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  margin-top: 30px;
}

.security-item {
  flex: 1;
  min-width: 230px;
  max-width: 270px;
  background-color: var(--bg-color);
  padding: 30px 25px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s;
}

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

.security-item h3 {
  color: var(--primary-color);
  margin-bottom: 10px;
  font-size: 1.2rem;
}

.security-item p {
  margin: 0;
  color: var(--light-text);
  font-size: 0.95rem;
}

/* Contact Section */
.contact {
  padding: 120px 0;
  background-color: var(--bg-color);
}

.contact h2 {
  text-align: center;
  margin-bottom: 60px;
  font-size: 2.5rem;
  color: var(--text-color);
  position: relative;
  padding-bottom: 15px;
  display: inline-block;
}

.contact h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: var(--primary-color);
}

.contact .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact-info {
  width: 100%;
  max-width: 700px;
  background-color: var(--light-bg);
  padding: 50px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(0, 0, 0, 0.03);
  text-align: center;
}

.contact-info p {
  margin-bottom: 20px;
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--light-text);
}

.contact-email {
  color: var(--primary-color);
  font-weight: 600;
  text-decoration: none;
  position: relative;
  transition: all 0.3s;
}

.contact-email:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

form {
  width: 100%;
  max-width: 600px;
  background-color: var(--light-bg);
  padding: 50px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(0, 0, 0, 0.03);
}

.form-group {
  margin-bottom: 25px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-color);
}

input, textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.3s;
  background-color: #f9fafc;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(50, 74, 226, 0.1);
  background-color: white;
}

textarea {
  height: 150px;
  resize: vertical;
}

.submit-btn {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 14px 30px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: all 0.3s;
  box-shadow: 0 5px 15px rgba(50, 74, 226, 0.2);
  width: 100%;
}

.submit-btn:hover {
  background-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(50, 74, 226, 0.3);
}

/* Footer */
footer {
  background-color: #2a2a2a;
  color: white;
  padding: 60px 0 40px;
  text-align: center;
}

footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 900px;
}

.footer-logo {
  margin-bottom: 25px;
}

.footer-logo img {
  height: auto;
  width: 200px;
  max-width: 100%;
}

footer p {
  margin-bottom: 20px;
  opacity: 0.8;
  font-size: 0.95rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links a {
  color: white;
  text-decoration: none;
  opacity: 0.7;
  transition: opacity 0.3s;
  font-size: 0.95rem;
}

.footer-links a:hover {
  opacity: 1;
  text-decoration: underline;
}

/* Success Message */
.success-message {
  text-align: center;
  padding: 40px;
  background-color: var(--bg-color);
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(75, 235, 181, 0.3);
}

.success-message h3 {
  color: var(--primary-color);
  margin-bottom: 15px;
  font-size: 1.8rem;
}

.success-message p {
  color: var(--light-text);
  font-size: 1.1rem;
}

/* Responsive Design */
@media (max-width: 992px) {
  .hero-content h1 {
    font-size: 2.8rem;
  }
  
  .feature-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
  
  .benefits, .security-features {
    flex-direction: column;
    align-items: center;
  }
  
  .benefit-item, .security-item {
    width: 100%;
    max-width: 450px;
  }
  
  form {
    padding: 40px 30px;
  }
}

@media (max-width: 768px) {
  header .container {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
  }
  
  .logo {
    margin-bottom: 0;
  }
  
  nav {
    width: 100%;
    margin-top: 15px;
  }
  
  nav ul {
    margin-top: 10px;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  nav ul li {
    margin: 5px 15px;
  }
  
  .hero-section {
    padding: 220px 0 100px;
  }
  
  .hero-content h1 {
    font-size: 2.2rem;
    line-height: 1.3;
  }
  
  .hero-content p {
    font-size: 1.1rem;
    padding: 0 15px;
  }
  
  .feature-card, .benefit-item, .security-item {
    padding: 30px 25px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 10px;
  }
  
  .cta-button {
    margin-top: 10px;
  }
}

@media (max-width: 480px) {
  .container {
    width: 95%;
    padding: 0 10px;
  }

  header {
    padding: 10px 0;
  }

  header .container {
    padding: 10px;
  }

  .logo img {
    height: 35px;
  }

  nav ul li {
    margin: 5px 10px;
  }

  .sign-in-btn {
    padding: 8px 16px;
    font-size: 0.9rem;
  }

  .hero-section {
    padding: 200px 0 80px;
  }
  
  .hero-content h1 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    line-height: 1.3;
    padding: 0 10px;
  }
  
  .hero-content p {
    font-size: 1rem;
    margin-bottom: 30px;
    padding: 0 20px;
  }
  
  .cta-button {
    padding: 12px 25px;
    font-size: 0.95rem;
    margin-top: 5px;
  }

  .features, .about, .security-section, .contact {
    padding: 60px 0;
  }
  
  .features h2, .about h2, .security-section h2, .contact h2 {
    font-size: 1.8rem;
    margin-bottom: 30px;
  }

  .feature-card, .benefit-item, .security-item {
    padding: 25px 20px;
    margin-bottom: 15px;
  }

  .feature-grid {
    gap: 15px;
  }

  .feature-card h3, .benefit-item h3, .security-item h3 {
    font-size: 1.2rem;
  }

  .feature-card p, .benefit-item p, .security-item p {
    font-size: 0.9rem;
  }

  form {
    padding: 25px 15px;
  }

  input, textarea {
    padding: 12px;
  }

  .submit-btn {
    padding: 12px 20px;
  }

  footer {
    padding: 40px 0 30px;
  }

  .footer-logo img {
    width: 160px;
  }

  footer p {
    font-size: 0.85rem;
    margin-bottom: 15px;
  }
}

/* iPhone SE and other very small devices */
@media (max-width: 375px) {
  .hero-content h1 {
    font-size: 1.6rem;
  }

  .hero-content p {
    font-size: 0.9rem;
  }

  .cta-button {
    padding: 10px 20px;
    font-size: 0.9rem;
  }

  .features h2, .about h2, .security-section h2, .contact h2 {
    font-size: 1.6rem;
  }

  nav ul li {
    margin: 3px 8px;
  }

  .sign-in-btn {
    padding: 6px 14px;
    font-size: 0.85rem;
  }

  .feature-card h3, .benefit-item h3, .security-item h3 {
    font-size: 1.1rem;
  }

  .hero-section {
    padding: 180px 0 70px;
  }
}