/* --- БАЗОВЫЕ НАСТРОЙКИ --- */
body { margin: 0; font-family: 'Arial', sans-serif; color: #162a3d; line-height: 1.6; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* --- ШАПКА (HEADER) --- */
header { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    padding: 25px 0; 
    border-bottom: 1px solid #eee; 
    background: #fff;
}
.logo { font-weight: 800; font-size: 22px; color: #162a3d; }

/* Навигация */
nav { display: flex; align-items: center; }

.nav-link {
    text-decoration: none;
    color: #162a3d;
    font-size: 14px;
    font-weight: 600;
    transition: 0.3s;
    margin-left: 20px;
    padding-bottom: 4px;
    border-bottom: 2px solid transparent;
}
@media(max-width: 600px) {
    header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    .nav-link { margin-left: 10px; margin-right: 10px; }
}
.nav-link:hover {
    color: #1677ff;
    border-bottom: 2px solid #1677ff;
}

.nav-link.active {
    color: #1677ff; 
    border-bottom: 2px solid #1677ff;
}

.header-phone { font-weight: 800; font-size: 18px; color: #1677ff; }

/* --- ПОДВАЛ (FOOTER) --- */
footer { background: #162a3d; color: #fff; padding: 60px 0 30px; margin-top: 50px; }

.footer-container { 
    display: grid; 
    grid-template-columns: repeat(4, 1fr); /* 4 колонки */
    gap: 30px; 
    max-width: 1200px; 
    margin: 0 auto; 
    padding: 0 20px; 
}

.footer-section h4 { 
    margin: 0 0 20px 0; 
    border-bottom: 2px solid #1d7be5; 
    display: inline-block; 
    padding-bottom: 5px;
}

.footer-section a { 
    display: block; 
    color: #ccc; 
    text-decoration: none; 
    margin-bottom: 10px; 
    transition: 0.3s; 
}

.footer-section a:hover { color: #fff; }

/* Соцсети */
.social-links { display: flex; gap: 15px; margin-top: 10px; }
.social-links img { width: 30px; height: 30px; cursor: pointer; transition: 0.2s; }
.social-links img:hover { transform: scale(1.1); }

/* Карта */
.map-box { height: 150px; background: #eee; border-radius: 8px; overflow: hidden; }
.map-box iframe { width: 100%; height: 100%; border: 0; }

.copyright { 
    text-align: center; margin-top: 40px; font-size: 12px; color: #888; 
    border-top: 1px solid #2d455c; padding-top: 20px;
}

/* --- АДАПТИВНОСТЬ --- */
@media(max-width: 992px) {
    .footer-container { grid-template-columns: repeat(2, 1fr); } /* 2 колонки на планшетах */
}

@media(max-width: 600px) {
    .footer-container { grid-template-columns: 1fr; text-align: center; } /* 1 колонка на смартфонах */
    .footer-section h4 { border: none; }
    .social-links { justify-content: center; }
    
    header { flex-direction: column; gap: 15px; }
    nav { margin-bottom: 10px; }
}