/* Стили для аутентификации */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
    padding: 2rem 0;
}

.auth-form {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.auth-form h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #2c3e50;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: #555;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.btn-primary {
    width: 100%;
    padding: 0.75rem;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.3s;
}

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

.auth-link {
    text-align: center;
    margin-top: 1rem;
}

.auth-link a {
    color: #3498db;
    text-decoration: none;
}

.auth-link a:hover {
    text-decoration: underline;
}

.error-message {
    background: #e74c3c;
    color: white;
    padding: 0.75rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.error-message p {
    margin: 0;
}
/* Базовые стили */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
}

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

/* Шапка */
header {
    background: #2c3e50;
    color: white;
    padding: 1rem 0;
}

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

.logo h1 {
    margin: 0;
    font-size: 1.8rem;
}

.logo p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.8;
}

nav ul {
    list-style: none;
    display: flex;
}

nav ul li {
    margin-left: 1rem;
}

nav ul li a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 3px;
    transition: background 0.3s;
}

nav ul li a:hover {
    background: #34495e;
}

/* Основной контент */
main {
    padding: 2rem 0;
    min-height: calc(100vh - 200px);
}

/* Фильтры */
.filters {
    background: white;
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 2rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.filters input, .filters select {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 3px;
    flex: 1;
    min-width: 200px;
}

.filters button {
    padding: 0.5rem 1rem;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 3px;
    cursor: pointer;
}

.filters button:hover {
    background: #2980b9;
}

/* Список товаров */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.product-card {
    background: white;
    border-radius: 5px;
    padding: 1rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.product-card h3 {
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.product-price {
    font-size: 1.2rem;
    font-weight: bold;
    color: #e74c3c;
    margin: 0.5rem 0;
}

.product-supplier {
    color: #7f8c8d;
    font-size: 0.9rem;
}

/* Подвал */
footer {
    background: #34495e;
    color: white;
    text-align: center;
    padding: 1rem 0;
    margin-top: 2rem;
}

/* Адаптивность */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        text-align: center;
    }
    
    nav ul {
        margin-top: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    nav ul li {
        margin: 0.25rem;
    }
    
    .filters {
        flex-direction: column;
    }
    
    .filters input, .filters select {
        min-width: auto;
    }
}