/* Variables de color para fácil edición */
:root {
    --primary-blue: #2c3e50;
    --stone-gray: #95a5a6;
    --white-clean: #ecf0f1;
    --dark-overlay: rgba(0, 0, 0, 0.75);
}

body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    font-family: 'Montserrat', sans-serif;
    background-color: #1a1a1a;
    color: #ffffff;
    display: flex;
    flex-direction: column;
}

/* Fondo con imagen de industria/cantera */
.bg-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(var(--dark-overlay), var(--dark-overlay)),
                url('https://images.unsplash.com/photo-1578319439584-104c94d37305?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    z-index: -1;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px;
}

.header-brand {
    border-left: 5px solid var(--stone-gray);
    padding-left: 20px;
    margin-bottom: 40px;
}

.header-brand span {
    display: block;
    font-size: 0.9rem;
    letter-spacing: 5px;
    text-transform: uppercase;
    color: var(--stone-gray);
    margin-bottom: 5px;
}

.header-brand h1 {
    margin: 0;
    font-size: clamp(2rem, 5vw, 3.5rem); /* Tamaño fluido */
    font-weight: 700;
}

.description p {
    max-width: 650px;
    margin-bottom: 35px;
    line-height: 1.8;
    font-size: 1.1rem;
    color: var(--white-clean);
    opacity: 0.9;
}

.services-list {
    display: flex;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
    justify-content: center;
}

.service-tag {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 10px 20px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    backdrop-filter: blur(8px);
    transition: background 0.3s ease;
}

.service-tag:hover {
    background: rgba(255, 255, 255, 0.2);
}

.cta-whatsapp {
    background-color: transparent;
    border: 2px solid #ffffff;
    color: #ffffff;
    padding: 18px 40px;
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.4s ease;
}

.cta-whatsapp:hover {
    background-color: #ffffff;
    color: #1a1a1a;
    transform: scale(1.05);
}

.site-footer {
    padding: 25px;
    text-align: center;
    font-size: 0.8rem;
    background: rgba(0, 0, 0, 0.6);
    color: var(--stone-gray);
}