@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600&display=swap');

:root {
    --negro: #111;
    --gris-oscuro: #2b2b2b;
    --gris-claro: #f5f5f5;
    --acento: #b08d57; /* tono madera elegante */
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    background: var(--gris-claro);
    color: #333;
    line-height: 1.6;
}

/* HEADER */
header {
    background: linear-gradient(
        rgba(0,0,0,0.65),
        rgba(0,0,0,0.65)
    ), url("https://images.unsplash.com/photo-1600585154340-be6161a56a0c");
    background-size: cover;
    background-position: center;
    color: white;
    padding: 80px 20px;
    text-align: center;
}

header h1 {
    font-size: 3rem;
    letter-spacing: 3px;
    margin-bottom: 10px;
}

header p {
    font-weight: 300;
    font-size: 1.1rem;
}

/* NAV */
nav {
    background: var(--negro);
    padding: 15px;
    text-align: center;
}

nav a {
    color: white;
    margin: 0 18px;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: var(--acento);
}

/* SECCIONES */
section {
    max-width: 1100px;
    margin: auto;
    padding: 70px 20px;
}

h2 {
    font-size: 2rem;
    margin-bottom: 30px;
    position: relative;
}

h2::after {
    content: "";
    width: 60px;
    height: 3px;
    color: var(--acento);
    background: var(--acento);
    display: block;
    margin-top: 10px;
}

/* SERVICIOS */
ul {
    list-style: none;
    padding: 0;
}

ul li {
    padding: 15px 0;
    border-bottom: 1px solid #ddd;
}

/* GALERÍA */
.galeria {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.galeria img {
    width: 100%;
    border-radius: 10px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.galeria img:hover {
    transform: scale(1.03);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

/* CONTACTO */
.contacto {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* FOOTER */
footer {
    background: var(--negro);
    color: white;
    text-align: center;
    padding: 20px;
    font-size: 0.9rem;
}

.logo {
    width: 150px;
    margin-bottom: 10px;
}

.whatsapp {
    position: fixed;
    bottom: 25px;
    right: 25px;
    background: #25D366;
    color: white;
    font-size: 28px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    transition: transform 0.3s;
    z-index: 999;
}

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

.btn-portafolio {
    display: inline-block;
    margin-top: 25px;
    padding: 15px 35px;
    background: var(--negro);
    color: white;
    text-decoration: none;
    font-weight: 500;
    border-radius: 40px;
    transition: all 0.3s;
}

.btn-portafolio:hover {
    background: var(--acento);
    transform: translateY(-3px);
}

.lista-servicios {
    margin: 30px 0 50px;
    padding-left: 0;
    list-style: none;
}

.lista-servicios li {
    padding: 12px 0;
    border-bottom: 1px solid #e0e0e0;
    font-weight: 500;
}

.materiales {
    margin-top: 60px;
}

.materiales h3 {
    font-size: 1.6rem;
    margin-bottom: 20px;
    color: var(--acento);
}

.materiales p {
    max-width: 900px;
    margin-bottom: 18px;
}

.btn-proyectos {
    display: inline-block;
    margin-top: 40px;
    padding: 14px 40px;
    border: 2px solid var(--acento);
    color: var(--acento);
    text-decoration: none;
    font-weight: 500;
    border-radius: 40px;
    transition: all 0.3s;
}