body {
    background-color: #121212;
}

.hero-section {
    position: relative;
    background-color: #121212;
    overflow: hidden;
    padding: 140px 0; /* Más espacio */
}

.bg-gradient-section {
    background: linear-gradient(180deg, #1a1a1a 0%, #0f0f0f 100%);
}

.footer-gradient {
    background: linear-gradient(180deg, #0f0f0f 0%, #000 100%);
}

#particles-js {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

.hero-section a.btn {
    border-radius: 50px;
    padding: 12px 40px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(245, 124, 0, 0.4);
    transition: all 0.3s ease;
}

    .hero-section a.btn:hover {
        background-color: #f57c00;
        color: #fff;
    }

.partner-logo {
    max-height: 80px;
    object-fit: contain;
    filter: grayscale(100%) brightness(1.2);
    transition: transform 0.3s ease, filter 0.3s ease;
}

    .partner-logo:hover {
        transform: scale(1.1);
        filter: grayscale(0%) brightness(1.5);
    }

.circular-service {
    width: 260px;
    height: 260px;
    padding: 25px;
    border-radius: 50%;
    background: radial-gradient(circle at top, #1f1f1f, #121212);
    box-shadow: 0 8px 20px rgba(0,0,0,0.5);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: transform 0.5s ease, box-shadow 0.5s ease, border 0.5s ease;
    border: 2px solid transparent;
}

    .circular-service:hover {
        transform: scale(1.1) rotate(2deg);
        box-shadow: 0 12px 40px rgba(0,0,0,0.8);
        border-color: #f57c00;
    }

    .circular-service img {
        width: 90px;
        height: 90px;
        border-radius: 50%;
        margin-bottom: 10px;
        object-fit: cover;
        box-shadow: 0 2px 8px rgba(245, 124, 0, 0.3);
    }

    .circular-service h4 {
        font-size: 18px;
        color: #f57c00;
        font-weight: 700;
        margin-bottom: 5px;
    }

    .circular-service p {
        font-size: 13px;
        margin-bottom: 5px;
        color: #ccc;
    }

    .circular-service ul {
        padding: 0;
        list-style: none;
        font-size: 12px;
        color: #ddd;
        margin: 0;
    }

        .circular-service ul li {
            margin-bottom: 2px;
        }

.whatsapp-btn {
    position: fixed;
    right: 20px;
    display: flex;
    align-items: center;
    z-index: 1000;
}

    .whatsapp-btn span {
        background-color: #212529;
        color: white;
        padding: 8px 12px;
        border-radius: 8px 0 0 8px;
        font-weight: 500;
        font-size: 14px;
    }

    .whatsapp-btn a {
        width: 60px;
        height: 60px;
        border-radius: 0 50% 50% 0;
        display: flex;
        justify-content: center;
        align-items: center;
        color: white;
        text-decoration: none;
        box-shadow: 0 2px 5px rgba(0,0,0,0.3);
        transition: transform 0.3s, background-color 0.3s;
    }

        .whatsapp-btn a:hover {
            transform: scale(1.1);
        }

    .whatsapp-btn.commercial {
        bottom: 100px;
    }

        .whatsapp-btn.commercial a {
            background-color: #25D366;
        }

            .whatsapp-btn.commercial a:hover {
                background-color: #34e289;
            }

    .whatsapp-btn.engineering {
        bottom: 30px;
    }

        .whatsapp-btn.engineering a {
            background-color: #128C7E;
        }

            .whatsapp-btn.engineering a:hover {
                background-color: #17b698;
            }

@media (max-width: 768px) {
    .hero-section {
        padding: 100px 0;
    }

    .circular-service {
        width: 200px;
        height: 200px;
        padding: 20px;
    }

        .circular-service img {
            width: 70px;
            height: 70px;
        }
}