:root {
  --primary-color: #0066cc;
  --secondary-color: #00aa88;
  --accent-color: #ff6600;
  --light-color: #f5f7fa;
  --dark-color: #333333;
  --gray-color: #888888;
  --border-radius: 6px;
  --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--dark-color);
  background-color: #f9f9f9;
}

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

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

a:hover {
  color: var(--secondary-color);
}

ul {
  list-style: none;
}

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

section {
  padding: 60px 0;
}

/* Header Styles */
header {
  background-color: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 30px;
}

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

.logo {
  width: 50px;
  height: 50px;
  margin-right: 15px;
  border-radius: 50%;
  object-fit: cover;
}

header h1 {
  font-size: 1.5rem;
  color: var(--primary-color);
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
}

.nav-links li {
  margin-left: 20px;
}

.nav-links a {
  color: var(--dark-color);
  font-weight: 500;
  padding: 8px 12px;
  border-radius: var(--border-radius);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-color);
  background-color: rgba(0, 102, 204, 0.1);
}

.login-btn {
  background-color: var(--primary-color);
  color: #fff !important;
  padding: 8px 20px;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.login-btn:hover {
  background-color: var(--secondary-color);
}

.menu-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #e0f7fa, #e8f5e9);
  padding: 60px 30px;
}

.hero-content {
  flex: 1;
  padding-right: 20px;
}

.hero-image {
  flex: 1;
  text-align: center;
}

.hero-image img {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: var(--box-shadow);
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  color: var(--dark-color);
}

.cta-button {
  display: inline-block;
  background-color: var(--secondary-color);
  color: white;
  padding: 12px 30px;
  border-radius: var(--border-radius);
  font-weight: 600;
  transition: var(--transition);
}

.cta-button:hover {
  background-color: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* Recharge Form Section */
.recharge-form {
  background-color: #fff;
  border-radius: 10px;
  box-shadow: var(--box-shadow);
  padding: 40px;
  margin: 20px auto;
  max-width: 600px;
}

.recharge-form h2 {
  text-align: center;
  margin-bottom: 30px;
  color: var(--primary-color);
}

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

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

.form-group input,
.form-group select {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.submit-btn {
  display: block;
  width: 100%;
  padding: 12px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.submit-btn:hover {
  background-color: var(--secondary-color);
}

/* Features Section */
.features {
  background-color: #f9f9f9;
}

.features h2 {
  text-align: center;
  margin-bottom: 40px;
  color: var(--primary-color);
}

.feature-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.feature-card {
  background-color: #fff;
  padding: 30px;
  border-radius: 10px;
  box-shadow: var(--box-shadow);
  text-align: center;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-10px);
}

.feature-card i {
  font-size: 2.5rem;
  color: var(--secondary-color);
  margin-bottom: 20px;
}

.feature-card h3 {
  margin-bottom: 15px;
  color: var(--dark-color);
}

/* Operators Section */
.operators {
  background-color: #fff;
}

.operators h2 {
  text-align: center;
  margin-bottom: 40px;
  color: var(--primary-color);
}

.operator-logos {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 40px;
  margin-bottom: 30px;
}

.operator {
  text-align: center;
  transition: var(--transition);
}

.operator:hover {
  transform: scale(1.05);
}

.operator img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: var(--box-shadow);
  margin-bottom: 10px;
}

.view-more {
  display: block;
  text-align: center;
  margin-top: 20px;
  font-weight: 600;
}

/* Footer */
footer {
  background-color: #263238;
  color: #fff;
  padding: 60px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-column h3 {
  color: #fff;
  margin-bottom: 20px;
  font-size: 1.2rem;
}

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

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

.footer-column ul li a:hover {
  color: #fff;
}

.social-links {
  display: flex;
  gap: 15px;
  margin-top: 20px;
}

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

.social-links a:hover {
  background-color: var(--primary-color);
  transform: translateY(-3px);
}

.footer-column p {
  color: #bbb;
  margin-bottom: 10px;
}

.footer-column p i {
  margin-right: 10px;
  color: var(--secondary-color);
}

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

.footer-links a {
  color: #bbb;
  margin-left: 20px;
}

.footer-links a:hover {
  color: #fff;
}

/* Notification */
.notification {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: #fff;
  padding: 15px 25px;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  display: none;
  z-index: 1000;
  min-width: 300px;
}

.notification.success {
  border-left: 4px solid var(--secondary-color);
}

.notification.error {
  border-left: 4px solid #ff3333;
}

.close-notification {
  position: absolute;
  top: 10px;
  right: 10px;
  cursor: pointer;
  font-size: 1.2rem;
}

/* Responsive Design */
@media (max-width: 992px) {
  .hero {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-content {
    padding-right: 0;
    margin-bottom: 30px;
  }
  
  .feature-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  
  .nav-links {
    position: fixed;
    top: 80px;
    left: -100%;
    background-color: #fff;
    width: 100%;
    height: calc(100vh - 80px);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
    transition: 0.3s;
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
  }
  
  .nav-links.active {
    left: 0;
  }
  
  .nav-links li {
    margin: 15px 0;
    width: 100%;
  }
  
  .nav-links a {
    display: block;
    width: 100%;
  }
  
  .feature-cards {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-links {
    margin-top: 15px;
  }
  
  .footer-links a {
    margin: 0 10px;
  }
}