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

body {
    font-family: 'Oswald', sans-serif;
    line-height: 1.6;
    color: #333;
}

header {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background-color: #f8f9fa;
    border-bottom: 2px solid #e9ecef;
    position: relative;
}

header > img,
header > h1 {
    margin-bottom: 15px;
}

header > img {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
}

header > h1 {
    text-align: center;
    font-size: 2.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-top: 10px;
}

nav {
    width: 100%;
    display: flex;
    justify-content: center;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
    flex-wrap: wrap;
    justify-content: center;
}

nav li a {
    text-decoration: none;
    color: #34495e;
    font-weight: 500;
    font-size: 1.1rem;
    padding: 8px 15px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

nav li a:hover {
    background-color: #3498db;
    color: white;
}

.main-content {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}

.main-title {
    font-size: 2.5rem;
    color: #2c3e50;
    text-align: center;
    margin-bottom: 20px;
    font-weight: 700;
    line-height: 1.2;
}

.main-subtitle {
    text-align: center;
    font-weight: 400;
    color: #7f8c8d;
    margin-bottom: 40px;
    font-size: 1.8rem;
}

.features-title {
    font-size: 1.8rem;
    color: #34495e;
    margin: 30px 0 20px 0;
    font-weight: 600;
}

.features-list {
    list-style: none;
    margin: 30px 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
}

.feature-item {
    background: linear-gradient(145deg, #f8f9fa, #e9ecef);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    border-left: 4px solid #3498db;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(52, 152, 219, 0.15);
    border-left-color: #2c3e50;
}

.feature-item::before {
    position: absolute;
    right: 15px;
    top: 15px;
    background: #3498db;
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.feature-name {
    color: #2c3e50;
    font-size: 1.2rem;
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
}

.info-image {
    text-align: center;
    margin: 30px 0;
}

.info-text {
    background: linear-gradient(145deg, #f8f9fa, #e9ecef);
    padding: 25px;
    border-radius: 12px;
    margin: 25px 0;
    line-height: 1.8;
    font-size: 1.1rem;
}

.info-text p {
    margin-bottom: 15px;
}

.info-text p:last-child {
    margin-bottom: 0;
}

.info-table {
    width: 100%;
    border-collapse: collapse;
    margin: 30px 0;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.info-table th,
.info-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #e9ecef;
}

.info-table th {
    background: linear-gradient(360deg,rgba(52, 152, 219, 1) 0%, rgba(17, 57, 97, 1) 100%);
    color: white;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
}

.info-table tr:nth-child(even) {
    background-color: #f8f9fa;
}

.info-table tr:hover {
    background-color: #e9ecef;
}

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

footer {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 25px 20px;
    margin-top: 40px;
    border-top: 2px solid #3498db;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer-content p {
    margin-bottom: 15px;
    font-size: 0.95rem;
    opacity: 0.9;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 15px;
}

.footer-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: white;
    text-decoration: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

.footer-copyright {
    padding-top: 15px;
    margin-top: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-copyright p {
    margin: 0;
    opacity: 0.7;
    font-size: 0.85rem;
}

/* Добавьте в конец файла styles.css */

.feedback-form {
    max-width: 800px;
    margin: 40px auto;
    padding: 30px;
    background: linear-gradient(145deg, #f8f9fa, #e9ecef);
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #2c3e50;
    font-size: 1.1rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.radio-group label {
    display: flex;
    align-items: center;
    font-weight: normal;
    cursor: pointer;
}

.radio-group input[type="radio"] {
    margin-right: 10px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    margin-right: 10px;
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: #7f8c8d;
    font-size: 0.9rem;
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    background: linear-gradient(135deg, #2980b9 0%, #1c6ea4 100%);
    transform: translateY(-2px);
}

.submit-btn:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
    transform: none;
}

.success-message {
    background: #d4edda;
    color: #155724;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #c3e6cb;
    margin: 20px 0;
}

.error-message {
    background: #f8d7da;
    color: #721c24;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #f5c6cb;
    margin: 20px 0;
}