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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #333;
    line-height: 1.6;
}

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

.hidden {
    display: none !important;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
}

.modal.show {
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.close {
    float: left;
    font-size: 2rem;
    font-weight: bold;
    color: #999;
    cursor: pointer;
    margin-bottom: 1rem;
}

.close:hover {
    color: #333;
}

/* Auth Tabs */
.auth-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid #eee;
}

.tab-btn {
    background: none;
    border: none;
    padding: 1rem;
    cursor: pointer;
    font-size: 1rem;
    color: #999;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.tab-btn.active {
    color: #667eea;
    border-bottom-color: #667eea;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.tab-content h2 {
    margin-bottom: 1.5rem;
    color: #333;
}

.tab-content input {
    width: 100%;
    padding: 0.8rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav {
    display: flex;
    gap: 2rem;
    align-items: center;
    position: relative;
}

.nav a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
    cursor: pointer;
}

.nav a:hover {
    color: #667eea;
}

.user-menu-btn {
    position: relative;
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border: 1px solid #ddd;
    border-radius: 5px;
    min-width: 200px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    z-index: 101;
}

.user-dropdown a {
    display: block;
    padding: 0.8rem 1rem;
    color: #333;
    text-decoration: none;
    transition: background 0.3s;
}

.user-dropdown a:hover {
    background: #f5f5f5;
}

.user-dropdown hr {
    margin: 0.5rem 0;
    border: none;
    border-top: 1px solid #eee;
}

.logout-btn {
    color: #ff4757 !important;
}

.cart-link {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: bold;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 2rem;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: slideDown 0.8s ease;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-small {
    background: #667eea;
    color: white;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
}

.btn-small:hover {
    background: #764ba2;
}

.btn-success {
    background: #2ed573;
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    margin: 0.5rem;
}

.btn-danger {
    background: #ff4757;
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    margin: 0.5rem;
}

.btn-checkout {
    width: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem;
    border: none;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.3s;
}

.btn-checkout:hover {
    transform: scale(1.02);
}

/* Products Section */
.products {
    background: white;
    padding: 4rem 2rem;
    margin: 2rem 0;
}

.products h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #333;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.product-card {
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    padding: 1.5rem;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
    border-color: #667eea;
}

.product-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.product-card h3 {
    color: #333;
    margin-bottom: 0.5rem;
}

.product-card p {
    color: #666;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.product-price {
    font-size: 1.5rem;
    color: #667eea;
    font-weight: bold;
    margin-bottom: 1rem;
}

.btn-add {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: transform 0.3s;
    font-weight: bold;
}

.btn-add:hover {
    transform: scale(1.05);
}

/* Cart Section */
.cart-section {
    background: white;
    padding: 3rem 2rem;
}

.cart-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
}

.cart-container {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2rem;
}

.cart-items {
    background: #f9f9f9;
    padding: 1.5rem;
    border-radius: 10px;
    min-height: 200px;
}

.cart-item {
    background: white;
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.cart-item-info {
    flex: 1;
}

.cart-item-name {
    font-weight: bold;
    color: #333;
}

.cart-item-price {
    color: #667eea;
    font-weight: bold;
}

.btn-remove {
    background: #ff4757;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-remove:hover {
    background: #ee5a6f;
}

.cart-summary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1.5rem;
    border-radius: 10px;
    height: fit-content;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.summary-row.final {
    border-top: 2px solid rgba(255, 255, 255, 0.3);
    padding-top: 1rem;
    font-weight: bold;
    font-size: 1.1rem;
}

.empty-cart {
    text-align: center;
    color: #999;
    padding: 2rem;
    font-size: 1.1rem;
}

/* Payment Section */
.payment-section {
    background: white;
    padding: 3rem 2rem;
}

.payment-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

.gateway-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.gateway-card {
    background: white;
    border: 2px solid #ddd;
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
}

.gateway-card:hover {
    border-color: #667eea;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.gateway-card.selected {
    border-color: #667eea;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
}

.gateway-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.gateway-card h3 {
    color: #333;
    margin-bottom: 0.5rem;
}

.gateway-card p {
    color: #666;
    font-size: 0.9rem;
}

.radio {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 1.5rem;
}

/* Dashboard Section */
.dashboard-section {
    background: white;
    padding: 3rem 2rem;
}

.dashboard-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.dashboard-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.dashboard-card h3 {
    margin-bottom: 1.5rem;
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
    padding-bottom: 1rem;
}

.stat {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding: 0.5rem 0;
}

/* Profile Section */
.profile-section {
    background: white;
    padding: 3rem 2rem;
}

.profile-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
}

.form-container {
    max-width: 500px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
}

.form-group input {
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 5px rgba(102, 126, 234, 0.3);
}

/* Invoices Section */
.invoices-section {
    background: white;
    padding: 3rem 2rem;
}

.invoices-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
}

.invoices-table {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

table th {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem;
    text-align: right;
}

table td {
    padding: 1rem;
    border-bottom: 1px solid #eee;
}

table tr:hover {
    background: #f9f9f9;
}

/* Admin Section */
.admin-section {
    background: white;
    padding: 3rem 2rem;
}

.admin-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
}

.admin-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid #eee;
}

.admin-tab-btn {
    background: none;
    border: none;
    padding: 1rem;
    cursor: pointer;
    font-size: 1rem;
    color: #999;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.admin-tab-btn.active {
    color: #667eea;
    border-bottom-color: #667eea;
}

.admin-tab-content {
    display: none;
}

.admin-tab-content.active {
    display: block;
}

.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
}

.stat-card h3 {
    margin-bottom: 1rem;
}

.stat-card p {
    font-size: 1.5rem;
    font-weight: bold;
}

.coupon-form {
    background: #f9f9f9;
    padding: 2rem;
    border-radius: 10px;
    margin-bottom: 2rem;
}

.coupon-form h3 {
    margin-bottom: 1.5rem;
}

/* Test Payment Modal */
.test-payment-container {
    text-align: center;
}

.payment-info {
    background: #f9f9f9;
    padding: 1.5rem;
    border-radius: 5px;
    margin-bottom: 2rem;
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
}

.test-card-options {
    text-align: center;
}

.test-card-options h3 {
    margin-bottom: 1.5rem;
}

/* Footer */
.footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
}

.footer p {
    margin: 0.5rem 0;
}

/* Discount Info */
.discount-info {
    background: #2ed573;
    color: white;
    padding: 1rem;
    border-radius: 5px;
    margin: 1rem 0;
    text-align: center;
}

/* Animations */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .nav {
        gap: 1rem;
    }
    
    .cart-container {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        width: 95%;
    }
}