/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Arial", sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f8f9fa;
}

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

/* Header styles */
.header {
  background: #fff;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-top {
  background: #2c3e50;
  color: white;
  padding: 10px 0;
  font-size: 14px;
}

.header-main {
  padding: 15px 0;
}

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

.logo {
  font-size: 24px;
  font-weight: bold;
  color: #2c3e50;
  text-decoration: none;
}

.search-bar {
  flex: 1;
  max-width: 500px;
  margin: 0 30px;
  position: relative;
}

.search-bar input {
  width: 100%;
  padding: 12px 50px 12px 15px;
  border: 2px solid #e0e0e0;
  border-radius: 25px;
  font-size: 16px;
  outline: none;
  transition: border-color 0.3s;
}

.search-bar input:focus {
  border-color: #3498db;
}

.search-btn {
  position: absolute;
  right: 5px;
  top: 50%;
  transform: translateY(-50%);
  background: #3498db;
  color: white;
  border: none;
  padding: 8px 15px;
  border-radius: 20px;
  cursor: pointer;
}

.user-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.user-actions a {
  color: #2c3e50;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

.user-actions a:hover {
  color: #3498db;
}

/* Navigation */
.nav {
  background: #34495e;
  padding: 0;
}

.nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
}

.nav li {
  position: relative;
}

.nav a {
  display: block;
  padding: 15px 25px;
  color: white;
  text-decoration: none;
  transition: background-color 0.3s;
}

.nav a:hover {
  background: #2c3e50;
}

/* Hero slider */
.hero-slider {
  height: 400px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-align: center;
  margin-bottom: 40px;
}

.hero-content h1 {
  font-size: 48px;
  margin-bottom: 20px;
}

.hero-content p {
  font-size: 20px;
  margin-bottom: 30px;
}

.btn {
  display: inline-block;
  padding: 12px 30px;
  background: #e74c3c;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
  transition: background-color 0.3s;
  border: none;
  cursor: pointer;
}

.btn:hover {
  background: #c0392b;
}

.btn-primary {
  background: #3498db;
}

.btn-primary:hover {
  background: #2980b9;
}

/* Product sections */
.section {
  margin: 40px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 30px;
  font-size: 32px;
  color: #2c3e50;
}

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

.product-card {
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.product-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.product-info {
  padding: 20px;
}

.product-title {
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 10px;
  color: #2c3e50;
}

.product-price {
  font-size: 20px;
  font-weight: bold;
  color: #e74c3c;
  margin-bottom: 15px;
}

.product-price .old-price {
  text-decoration: line-through;
  color: #95a5a6;
  font-size: 16px;
  margin-left: 10px;
}

/* Filter tabs */
.filter-tabs {
  display: flex;
  justify-content: center;
  margin-bottom: 30px;
  border-bottom: 2px solid #ecf0f1;
}

.filter-tab {
  padding: 15px 30px;
  background: none;
  border: none;
  font-size: 16px;
  font-weight: bold;
  color: #7f8c8d;
  cursor: pointer;
  transition: color 0.3s, border-bottom 0.3s;
  border-bottom: 3px solid transparent;
}

.filter-tab.active,
.filter-tab:hover {
  color: #3498db;
  border-bottom-color: #3498db;
}

/* Footer */
.footer {
  background: #2c3e50;
  color: white;
  padding: 40px 0 20px;
  margin-top: 60px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.footer-section h3 {
  margin-bottom: 20px;
  color: #3498db;
}

.footer-section ul {
  list-style: none;
}

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

.footer-section ul li a {
  color: #bdc3c7;
  text-decoration: none;
  transition: color 0.3s;
}

.footer-section ul li a:hover {
  color: white;
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid #34495e;
  color: #95a5a6;
}

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

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
  color: #2c3e50;
}

.form-control {
  width: 100%;
  padding: 12px;
  border: 2px solid #e0e0e0;
  border-radius: 5px;
  font-size: 16px;
  transition: border-color 0.3s;
}

.form-control:focus {
  outline: none;
  border-color: #3498db;
}

/* Admin styles */
.admin-sidebar {
  background: #2c3e50;
  color: white;
  width: 250px;
  min-height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  padding: 20px 0;
}

.admin-content {
  margin-left: 250px;
  padding: 20px;
}

.admin-nav ul {
  list-style: none;
}

.admin-nav li {
  margin-bottom: 5px;
}

.admin-nav a {
  display: block;
  padding: 15px 20px;
  color: white;
  text-decoration: none;
  transition: background-color 0.3s;
}

.admin-nav a:hover {
  background: #34495e;
}

/* Responsive design */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: 15px;
  }

  .search-bar {
    margin: 0;
    max-width: 100%;
  }

  .nav ul {
    flex-direction: column;
  }

  .hero-content h1 {
    font-size: 32px;
  }

  .product-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
  }

  .admin-sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s;
  }

  .admin-content {
    margin-left: 0;
  }
}

/* Utility classes */
.text-center {
  text-align: center;
}
.text-right {
  text-align: right;
}
.mb-20 {
  margin-bottom: 20px;
}
.mt-20 {
  margin-top: 20px;
}
.p-20 {
  padding: 20px;
}

/* Notifications */
.alert {
  padding: 15px;
  margin-bottom: 20px;
  border-radius: 5px;
}

.alert-success {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.alert-error {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.alert-info {
  background: #cce7ff;
  color: #004085;
  border: 1px solid #b3d7ff;
}