* {
    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%);
    min-height: 100vh;
    padding: 20px;
}

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

/* Navigation Styling */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 15px 25px;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    animation: fadeIn 0.4s ease;
}

.navbar a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    padding: 10px 20px;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.navbar a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: left 0.5s ease;
}

.navbar a:hover::before {
    left: 100%;
}

.navbar a:hover {
    color: #764ba2;
    background: rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

/* Form Container */
.form-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    max-width: 500px;
    margin: 0 auto;
    transition: transform 0.3s ease;
    animation: fadeIn 0.6s ease;
}

.form-container:hover {
    transform: translateY(-5px);
}

.form-title {
    text-align: center;
    color: #667eea;
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 30px;
    position: relative;
}

.form-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 2px;
}

/* Form Styling */
.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
    font-size: 16px;
}

.form-group input {
    width: 100%;
    padding: 15px;
    border: 2px solid #e1e5e9;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.9);
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

.form-group input:hover {
    border-color: #667eea;
}

/* Submit Button */
.submit-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.submit-btn:hover::before {
    left: 100%;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.submit-btn:active {
    transform: translateY(-1px);
}

/* Authentication Pages Styling */
.auth-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 50px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    max-width: 450px;
    margin: 0 auto;
    transition: transform 0.3s ease;
}

.auth-container:hover {
    transform: translateY(-5px);
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-title {
    color: #667eea;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
    position: relative;
}

.auth-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 2px;
}

.auth-subtitle {
    color: #666;
    font-size: 16px;
    margin-top: 20px;
    line-height: 1.5;
}

.auth-form {
    margin-bottom: 30px;
}

.auth-btn {
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.auth-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.auth-btn:hover::before {
    left: 100%;
}

.auth-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.auth-btn:active {
    transform: translateY(-1px);
}

.auth-footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.auth-footer p {
    color: #666;
    margin: 0;
}

.auth-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.auth-link:hover {
    color: #764ba2;
    text-decoration: underline;
}

/* Alert Styling */
.alert {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    margin-bottom: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    animation: slideIn 0.5s ease;
}

.alert-success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    border: 1px solid #f5c6cb;
}

.alert-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.alert-content {
    flex: 1;
}

.alert-content strong {
    color: #333;
    font-weight: 600;
}

.alert-content ul {
    margin: 10px 0 0 20px;
    color: #666;
}

.alert-content li {
    margin-bottom: 5px;
}

.alert-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 5px;
    transition: all 0.3s ease;
    display: inline-block;
    margin-top: 10px;
    background: transparent;
    border: 1px solid #667eea;
    cursor: pointer;
}

.alert-link:hover {
    background: #667eea;
    color: white;
    transform: translateY(-1px);
}

/* Welcome Message */
.welcome-message {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    border-radius: 15px;
    margin-bottom: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.welcome-message h2 {
    margin: 0 0 10px 0;
    font-size: 24px;
}

.welcome-message p {
    margin: 0;
    opacity: 0.9;
}

/* Statistics Container */
.stats-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.stats-item {
    text-align: center;
    flex: 1;
    min-width: 150px;
    margin: 10px;
}

.stats-number {
    font-size: 28px;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 5px;
}

.stats-label {
    color: #666;
    font-size: 14px;
    font-weight: 500;
}

/* Products Table Styling */
.products-table {
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-top: 20px;
}

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

.products-table th {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 15px;
    text-align: left;
    font-weight: 600;
    font-size: 16px;
}

.products-table td {
    padding: 12px 15px;
    border-bottom: 1px solid #eee;
    color: #333;
}

.products-table tr:hover {
    background: rgba(102, 126, 234, 0.05);
    transition: all 0.3s ease;
}

.products-table tr:last-child td {
    border-bottom: none;
}

/* Action Buttons */
.action-btn {
    padding: 6px 12px;
    margin: 0 3px;
    border: none;
    border-radius: 6px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-edit {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
}

.btn-edit:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(40, 167, 69, 0.3);
}

.btn-delete {
    background: linear-gradient(135deg, #dc3545 0%, #e83e8c 100%);
    color: white;
}

.btn-delete:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(220, 53, 69, 0.3);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 40px;
    color: #666;
}

.empty-state h3 {
    color: #667eea;
    margin-bottom: 15px;
}

/* Badges */
.price-badge {
    background: linear-gradient(135deg, #ffc107 0%, #fd7e14 100%);
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.qty-badge {
    background: linear-gradient(135deg, #17a2b8 0%, #6f42c1 100%);
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

/* Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    .navbar {
        padding: 12px 15px;
        gap: 15px;
    }

    .navbar a {
        padding: 8px 15px;
        font-size: 14px;
    }

    .form-container {
        padding: 30px 20px;
    }

    .form-title {
        font-size: 24px;
    }

    .form-group input {
        padding: 12px;
    }

    .submit-btn {
        padding: 12px;
        font-size: 16px;
    }

    .auth-container {
        padding: 30px 20px;
        margin: 10px;
    }
    
    .auth-title {
        font-size: 26px;
    }
    
    .auth-subtitle {
        font-size: 14px;
    }
    
    .auth-btn {
        padding: 15px;
        font-size: 16px;
    }

    .stats-container {
        flex-direction: column;
    }
    
    .products-table {
        overflow-x: auto;
    }
    
    .action-btn {
        padding: 4px 8px;
        font-size: 12px;
        margin: 2px;
    }
    
    .welcome-message h2 {
        font-size: 20px;
    }
    
    .stats-number {
        font-size: 24px;
    }
}