body {
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #f5f7fa;
    color: #333;
}

.main-nav {
    background: #1f4e79;
}

.main-nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav a {
    color: white;
    padding: 16px 20px;
    display: block;
    text-decoration: none;
}

.main-nav a:hover {
    background: #2e8b57;
}

/* SLIDER */
.slider {
    position: relative;
    height: 450px;
    overflow: hidden;
}

.slide {
    position: absolute;
    opacity: 0;
    transition: opacity 1s;
    width: 100%;
    height: 100%;
}

.slide.active {
    opacity: 1;
}

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

.caption {
    position: absolute;
    bottom: 20%;
    left: 10%;
    background: rgba(0,0,0,0.5);
    padding: 20px;
    color: white;
}

.btn {
    background: #d4af37;
    padding: 10px 16px;
    color: #000;
    text-decoration: none;
    font-weight: bold;
}

/* FOOTER */
.footer {
    background: #1f4e79;
    color: white;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    padding: 40px;
}