/* =========================================
   CONSTRUCTOR SÓLIDO - ESTILO INDUSTRIAL
   ========================================= */

:root {
    --primary: #f39c12;
    /* Amarillo Construcción */
    --dark: #2c3e50;
    /* Azul Grisáceo Oscuro */
    --concrete: #95a5a6;
    /* Gris Cemento */
    --light: #ecf0f1;
    --white: #ffffff;
}

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

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--light);
    color: var(--dark);
    line-height: 1.6;
}

h1,
h2,
h3,
h4 {
    font-family: 'Teko', sans-serif;
    text-transform: uppercase;
    letter-spacing: 1px;
}

a {
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- TOP BAR --- */
.top-bar {
    background-color: #1a252f;
    color: #bdc3c7;
    padding: 10px 0;
    font-size: 0.85rem;
}

.tb-flex {
    display: flex;
    justify-content: flex-end;
    gap: 20px;
}

.tb-flex i {
    color: var(--primary);
    margin-right: 5px;
}

/* --- NAVBAR --- */
.navbar {
    background: var(--white);
    padding: 15px 0;
    border-bottom: 4px solid var(--primary);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 10px;
    line-height: 1;
}

.logo i {
    color: var(--primary);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 25px;
    align-items: center;
}

.nav-links a {
    color: var(--dark);
    font-weight: bold;
    font-size: 1rem;
    transition: 0.3s;
}

.nav-links a:hover {
    color: var(--primary);
}

.btn-nav {
    background: var(--dark);
    color: white !important;
    padding: 8px 20px;
    border-radius: 4px;
}

.btn-nav:hover {
    background: var(--primary);
}

/* --- HERO --- */
.hero {
    height: 75vh;
    background: url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?auto=format&fit=crop&w=1200&q=80');
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(44, 62, 80, 0.8);
}

.hero-content {
    position: relative;
    z-index: 2;
    color: var(--white);
    max-width: 700px;
}

.hero-tag {
    background: var(--primary);
    color: var(--dark);
    padding: 5px 10px;
    font-weight: bold;
    font-size: 0.9rem;
    display: inline-block;
    margin-bottom: 15px;
}

.hero h1 {
    font-size: 4.5rem;
    line-height: 1;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: #bdc3c7;
}

.btn-primary {
    background: var(--primary);
    color: var(--dark);
    padding: 15px 35px;
    font-weight: bold;
    font-size: 1.1rem;
    border-radius: 4px;
    transition: 0.3s;
    display: inline-block;
}

.btn-primary:hover {
    background: var(--white);
}

/* --- SERVICIOS --- */
.section-services {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 3rem;
    margin-bottom: 5px;
}

.bar {
    width: 80px;
    height: 5px;
    background: var(--primary);
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 30px;
    border: 1px solid #ddd;
    text-align: center;
    transition: 0.3s;
    border-bottom: 4px solid transparent;
}

.service-card:hover {
    border-bottom-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.service-card i {
    font-size: 3rem;
    color: var(--dark);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.service-card p {
    color: #7f8c8d;
}

/* --- MAQUINARIA --- */
.section-machinery {
    background-color: var(--dark);
    color: var(--white);
    padding: 80px 0;
}

.machinery-flex {
    display: flex;
    align-items: center;
    gap: 50px;
}

.machinery-text {
    flex: 1;
}

.machinery-text h2 {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.machinery-list {
    list-style: none;
    margin-top: 20px;
}

.machinery-list li {
    margin-bottom: 10px;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.machinery-list i {
    color: var(--primary);
}

.machinery-img {
    flex: 1;
}

.machinery-img img {
    border: 5px solid var(--white);
}

/* --- PROYECTOS --- */
.section-projects {
    padding: 80px 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.project-item {
    position: relative;
    overflow: hidden;
    height: 250px;
}

.project-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: 0.5s;
}

.project-item:hover img {
    transform: scale(1.1);
}

.project-info {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(44, 62, 80, 0.9);
    color: white;
    padding: 15px;
    transform: translateY(100%);
    transition: 0.3s;
}

.project-item:hover .project-info {
    transform: translateY(0);
}

.project-info h4 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--primary);
}

.project-info span {
    font-size: 0.9rem;
}

/* --- CONTACTO --- */
.section-contact {
    padding: 60px 0;
    background: var(--primary);
    text-align: center;
}

.contact-box {
    background: var(--white);
    padding: 40px;
    max-width: 700px;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.contact-box h2 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.contact-data {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin: 20px 0;
    font-weight: bold;
    font-size: 1.2rem;
}

.c-item i {
    color: var(--primary);
    margin-right: 5px;
}

.btn-outline {
    border: 2px solid var(--dark);
    color: var(--dark);
    padding: 10px 25px;
    font-weight: bold;
    display: inline-block;
    transition: 0.3s;
}

.btn-outline:hover {
    background: var(--dark);
    color: white;
}

/* --- FOOTER --- */
.footer {
    background: #1a252f;
    color: #7f8c8d;
    text-align: center;
    padding: 20px;
    font-size: 0.8rem;
}

/* --- WHATSAPP --- */
.float-wa {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #25D366;
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    z-index: 100;
    transition: 0.3s;
}

.float-wa:hover {
    transform: scale(1.1);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .machinery-flex {
        flex-direction: column;
    }

    .contact-data {
        flex-direction: column;
        gap: 10px;
    }

    .hero h1 {
        font-size: 3rem;
    }
}