/* CSS переменные */
:root {
    --color-steel: #6c757d;
    --color-graphite: #495057;
    --color-bronze: #b08d57;
    --color-light: #f8f9fa;
    --color-white: #ffffff;
    --color-border: #dee2e6;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--color-graphite);
    background-color: var(--color-light);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Шапка */
.header {
    background-color: var(--color-white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    color: var(--color-bronze);
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-link {
    text-decoration: none;
    color: var(--color-graphite);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-bronze);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-bronze);
}

/* Основной контент */
.main {
    flex: 1;
    padding: 2rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--color-graphite);
    font-size: 2rem;
}

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

/* Карточки */
.card {
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.card-image {
    height: 200px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.card:hover .card-image img {
    transform: scale(1.05);
}

.card-content {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--color-graphite);
}

.card-address,
.card-phone {
    color: var(--color-steel);
    margin-bottom: 0.5rem;
}

.card-description {
    margin-bottom: 1rem;
    color: var(--color-graphite);
}

.card-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* Кнопки */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--border-radius);
    text-decoration: none;
    text-align: center;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    flex: 1;
    min-width: 100px;
}

.btn-primary {
    background-color: var(--color-bronze);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: #9a7748;
}

.btn-secondary {
    background-color: var(--color-steel);
    color: var(--color-white);
}

.btn-secondary:hover {
    background-color: #5a6268;
}

/* Список статей */
.articles-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.article {
    display: flex;
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.article-image {
    flex: 0 0 250px;
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-content {
    flex: 1;
    padding: 1.5rem;
}

.article-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--color-graphite);
}

.article-date {
    color: var(--color-steel);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.article-excerpt {
    color: var(--color-graphite);
}

/* Форма сотрудничества */
.cooperation-form {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--color-white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-graphite);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-bronze);
    box-shadow: 0 0 0 2px rgba(176, 141, 87, 0.2);
}

.btn-submit {
    width: 100%;
    padding: 0.75rem;
    font-size: 1.1rem;
}

/* Подвал */
.footer {
    background-color: var(--color-graphite);
    color: var(--color-white);
    text-align: center;
    padding: 1.5rem 0;
    margin-top: 2rem;
}

/* Модальное окно */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: var(--color-white);
    margin: 15% auto;
    padding: 2rem;
    border-radius: var(--border-radius);
    width: 80%;
    max-width: 500px;
    position: relative;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-steel);
}

.close:hover {
    color: var(--color-graphite);
}

/* Адаптивность */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-list {
        gap: 1rem;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .article {
        flex-direction: column;
    }

    .article-image {
        flex: 0 0 200px;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .cooperation-form {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .card-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .modal-content {
        width: 90%;
        margin: 20% auto;
    }
}