/* Основные стили сайта */
body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
    background: #f7f7f7;
    color: #333;
}
header h1 {
    margin: 0;
    font-size: 2.5rem;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0;
    display: flex;
    justify-content: center;
}

nav li {
    margin: 0 1rem;
}

nav a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}

section {
    padding: 2rem 1rem;
    max-width: 1200px;
    margin: auto;
}

h2 {
    text-align: center;
    margin-bottom: 1rem;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.5rem;
}

.product-card {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,.1);
}

.product-card img {
    width: 100%;
    height: auto;
    border-radius: 4px;
}

.product-card h3 {
    margin: 0.5rem 0;
}

.product-card .price {
    color: #e74c3c;
    font-weight: bold;
}

.product-card .description {
    font-size: 0.9rem;
    margin: 0.5rem 0;
}

.buy-btn {
    padding: 0.5rem 1rem;
    background: #1976d2;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.buy-btn:hover {
    background: #1565c0;
}

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

label {
    display: block;
    margin-bottom: 0.3rem;
}

input[type="text"],
input[type="email"],
input[type="tel"],
textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #bbb;
    border-radius: 4px;
    box-sizing: border-box;
}

button[type="submit"] {
    padding: 0.7rem 1.5rem;
    background: #28a745;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button[type="submit"]:hover {
    background: #218838;
}

footer {
    background: #222;
    color: #ccc;
    text-align: center;
    padding: 1rem 0;
    margin-top: 2rem;
}

.feedback {
    margin-top: 1rem;
    font-weight: bold;
}