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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

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

header {
    background: white;
    padding: 20px 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

h1 {
    color: #667eea;
    font-size: 28px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info span {
    color: #555;
    font-weight: 500;
}

.section {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.hidden {
    display: none !important;
}

/* Auth Forms */
.auth-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.auth-form h2 {
    color: #333;
    margin-bottom: 20px;
    font-size: 22px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #555;
    font-weight: 500;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    width: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #f0f0f0;
    color: #333;
}

.btn-secondary:hover {
    background: #e0e0e0;
}

.btn-danger {
    background: #ef4444;
    color: white;
    padding: 8px 16px;
    font-size: 12px;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-edit {
    background: #3b82f6;
    color: white;
    padding: 8px 16px;
    font-size: 12px;
}

.btn-edit:hover {
    background: #2563eb;
}

/* Products Section */
.product-form-container {
    margin-bottom: 30px;
    padding: 20px;
    background: #f9fafb;
    border-radius: 8px;
}

.product-form-container h3 {
    color: #333;
    margin-bottom: 15px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 15px;
    align-items: end;
}

.form-row .btn {
    width: auto;
    padding: 12px 30px;
}

.products-list h3 {
    color: #333;
    margin-bottom: 20px;
}

#products-container {
    display: grid;
    gap: 15px;
}

.product-card {
    background: #f9fafb;
    padding: 20px;
    border-radius: 8px;
    border: 2px solid #e5e7eb;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s;
}

.product-card:hover {
    border-color: #667eea;
    transform: translateX(5px);
}

.product-info h4 {
    color: #333;
    font-size: 18px;
    margin-bottom: 5px;
}

.product-info p {
    color: #667eea;
    font-size: 20px;
    font-weight: 600;
}

.product-actions {
    display: flex;
    gap: 10px;
}

/* Messages */
#message-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    max-width: 400px;
}

.message {
    background: white;
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    margin-bottom: 10px;
    animation: slideIn 0.3s ease;
}

.message.success {
    border-left: 4px solid #10b981;
}

.message.error {
    border-left: 4px solid #ef4444;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .auth-container {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .form-row .btn {
        width: 100%;
    }
    
    header {
        flex-direction: column;
        gap: 15px;
    }
}