/* Основные стили */
body {
    font-family: 'Open Sans', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #FFFFFF;
    color: #000000;
}

a {
    text-decoration: none;
    color: #0F4C81;
}

/* Header - возвращаем предыдущие цвета */
header {
    background-color: #D9E3E8; /* светло-серый фон */
    padding: 20px 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header .logo img {
    height: 50px;
}

header nav a {
    margin: 0 15px;
    font-weight: 600;
    color: #0F4C81; /* темно-синий текст */
}

/* Hero */
.hero {
    position: relative;
    background: url('images/hero-energy.jpg') no-repeat center center;
    background-size: cover;
    color: #FFFFFF;
    text-align: center;
    padding: 150px 20px;
}

/* Затемнение полностью покрывает изображение сверху вниз */

.hero-overlay h1, .hero-overlay p {
    transition: opacity 1s ease, transform 1s ease;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.hero button {
    z-index: 2;
}

button {
        background-color: #0F4C81;
    color: #FFFFFF;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 5px;
    font-weight: 600;

    transition: transform 0.3s ease, box-shadow 0.3s ease;
}



button:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

section {
    padding: 80px 50px;
}




.section-title {
    font-size: 36px;
    text-align: center;
    margin-bottom: 50px;
    color: #0F4C81;
}

.service, .case-study, .team-member {
    margin-bottom: 40px;
}

.service img, .case-study img, .team-member img {
    width: 100%;
    max-height: 250px;
    object-fit: cover;
    border-radius: 10px;
}

.contact-info p {
    margin: 10px 0;
}

form input, form textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid #D9E3E8;
    border-radius: 5px;
}

form button {
    width: 100%;
}

/* Footer */
footer {
    background-color: #0B2E59; /* тёмно-синий */
    color: #A9D6F5; /* светло-голубой текст */
    text-align: center;
    padding: 30px 20px;
}

footer p {
    margin: 5px 0;
}

/* Service Cards */
.service-card {
    display: flex;
    flex-direction: row;
    align-items: center;
    margin-bottom: 40px;
    gap: 20px;
}

.service-card img {
    width: 100px;
    border-radius: 10px;
}

.card-content h3 {
    margin: 0 0 10px;
}

.cards-row {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin-top: 30px;
}

.card {
    background-color: #F0F4F8;
    border-radius: 10px;
    padding: 20px;
    flex: 1 1 300px;
    max-width: 350px;
    text-align: center;
}

.card img {
    width: 100px;
    margin-bottom: 15px;
}

.card, .service-card, .case-study {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover, .service-card:hover, .case-study:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

button:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}