:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --accent-color: #ff4500;
}

body {
    font-family: 'Arial', sans-serif;
}

.banner {
    position: relative;
    width: 100%;
    min-height: 100vh;
    background-color: #f8f9fa;
    background-size: cover;
    background-position: center;
    transition: all 0.3s ease-out;
    animation: banner 28s infinite linear;
}

.banner-content {
    background-color: rgba(0, 0, 0, 0.7);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.banner-content:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.banner-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 2rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.social-icons {
    margin-bottom: 2rem;
}

.social-icons .btn {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0 10px;
}

.social-icons .btn:hover {
    transform: scale(1.1);
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

.brand-carousel {
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.brand-carousel h2 {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.brand-carousel img {
    max-height: 80px;
    object-fit: contain;
    transition: all 0.3s ease;
    filter: grayscale(100%);
}

.brand-carousel img:hover {
    filter: grayscale(0%);
    transform: scale(1.05);
}

.carousel-control-prev,
.carousel-control-next {
    width: 10%;
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
    background-color: var(--primary-color);
    border-radius: 50%;
    padding: 1.5rem;
}

@keyframes banner {
    0%, 25% {
        background-image: url("../img/banner-1.webp");
    }
    26%, 50% {
        background-image: url("../img/banner-2.webp");
    }
    51%, 75% {
        background-image: url("../img/banner-3.webp");
    }
    76%, 100% {
        background-image: url("../img/banner-4.webp");
    }
}

@media (max-width: 767px) {
    .banner-content h1 {
        font-size: 2.5rem;
    }
    .social-icons .btn {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    .brand-carousel img {
        max-height: 60px;
    }
}