:root {
    --primary-color: #2e6f40;
    /* deep green for natural/mining theme */
    --text-color: #333;
    --bg-color: #fff;
}

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

body {
    font-family: Arial, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.banner {
    width: 100%;
    height: 500px;
    background: url('banner.jpg') center/cover no-repeat;
}

header {
    background: var(--primary-color);
    color: #fff;
    padding: 0.5rem 1rem;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    text-align: center;
}

.header-content img {
    height: 60px;
    width: auto;
}

.header-text h1 {
    font-size: 1.8rem;
    margin-bottom: 0.2rem;
}

.content-wrapper {
    display: flex;
    flex-wrap: wrap;
    max-width: 1100px;
    margin: auto;
    padding: 2rem 1rem;
    gap: 2rem;
}

.contact {
    flex: 2;
    min-width: 250px;
}

h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.contact p {
    margin-bottom: 0.5rem;
}

.certificates {
    flex: 1;
    min-width: 200px;
    background: #f8f8f8;
    padding: 1rem;
    border-radius: 5px;
    height: fit-content;
}

.certificates h2 {
    font-size: 1.2rem;
}

.certificates a {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
}

.certificates a:hover {
    text-decoration: underline;
}

footer {
    background: #f4f4f4;
    text-align: center;
    padding: 1rem;
    font-size: 0.9rem;
    margin-top: 2rem;
}

@media (max-width: 768px) {
    .content-wrapper {
        flex-direction: column;
    }
}