:root {
    --rojo: #c62828;
    --rojo-oscuro: #a51f1f;
    --negro: #202020;
    --gris: #686868;
    --fondo: #ffffff;
    --fondo-suave: #f5f5f3;
    --borde: #e5e5e3;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 25px;
}

body {
    margin: 0;
    background: var(--fondo);
    color: var(--negro);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select,
textarea {
    font: inherit;
}

img {
    max-width: 100%;
}

.cabecera {
    min-height: 88px;
    padding: 15px 7%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 25px;
    background: #ffffff;
    position: relative;
    z-index: 5;
    border-bottom: 1px solid var(--borde);
}

.marca,
.pie-marca {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.marca img {
    width: 55px;
    height: 55px;
    object-fit: contain;
}

.marca span,
.pie-marca span {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    line-height: 1.5;
}

.marca strong,
.pie-marca strong {
    color: var(--rojo);
}

.menu {
    display: flex;
    align-items: center;
    gap: 25px;
}

.menu a {
    font-size: 12px;
    font-weight: 600;
    transition: color 0.2s ease;
}

.menu a:hover {
    color: var(--rojo);
}

.menu .menu-boton {
    padding: 11px 17px;
    background: var(--rojo);
    color: #ffffff;
}

.menu .menu-boton:hover {
    background: var(--rojo-oscuro);
    color: #ffffff;
}

/* PORTADA */

.hero {
    min-height: 620px;
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: #252525;
    color: #ffffff;
}

.hero-fondo {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(
            90deg,
            rgba(12, 12, 12, 0.82) 0%,
            rgba(12, 12, 12, 0.64) 48%,
            rgba(12, 12, 12, 0.18) 100%
        ),
        url("https://images.unsplash.com/photo-1600585154340-be6161a56a0c?auto=format&fit=crop&w=2000&q=90")
        center 55% / cover no-repeat;
    transform: scale(1.01);
}

.hero-contenido {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 850px;
    padding: 95px 10% 115px;
}

.sobretitulo,
.etiqueta {
    display: block;
    color: var(--rojo);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 2px;
    line-height: 1.8;
}

.sobretitulo {
    margin-bottom: 22px;
    color: #ffffff;
}

.hero h1 {
    margin: 0;
    font-size: clamp(39px, 5.5vw, 68px);
    line-height: 1.1;
    letter-spacing: -2px;
    font-weight: 500;
}

.hero h1 span {
    color: #f1c4c4;
}

.hero-contenido > p {
    max-width: 550px;
    margin: 24px 0 30px;
    color: #ededed;
    font-size: 15px;
    line-height: 1.9;
}

.hero-botones {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 13px;
}

.boton {
    min-height: 49px;
    padding: 13px 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    border: 1px solid transparent;
    border-radius: 2px;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
}

.boton span {
    font-size: 17px;
}

.boton-rojo {
    background: var(--rojo);
    color: #ffffff;
}

.boton-rojo:hover {
    background: var(--rojo-oscuro);
}

.boton-transparente {
    border-color: rgba(255, 255, 255, 0.65);
    color: #ffffff;
}

.boton-transparente:hover {
    background: #ffffff;
    color: var(--negro);
}

.hero-pie {
    position: absolute;
    right: 7%;
    bottom: 0;
    left: 7%;
    min-height: 55px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.35);
    color: #ffffff;
    font-size: 9px;
    letter-spacing: 1.5px;
}

/* INTRODUCCIÓN */

.introduccion {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    padding: 95px 10%;
    align-items: start;
}

.introduccion h2,
.cabecera-seccion h2,
.contacto h2 {
    margin: 12px 0 0;
    font-size: clamp(30px, 3.6vw, 43px);
    font-weight: 500;
    letter-spacing: -1.5px;
    line-height: 1.2;
}

.intro-texto {
    padding-top: 24px;
}

.intro-texto p {
    margin: 0 0 17px;
    color: var(--gris);
    font-size: 14px;
    line-height: 1.9;
}

.enlace-rojo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-top: 8px;
    color: var(--rojo);
    font-size: 12px;
    font-weight: 700;
}

.enlace-rojo:hover {
    color: var(--rojo-oscuro);
}

/* SERVICIOS */

.seccion {
    padding: 85px 10%;
}

.servicios {
    background: var(--fondo-suave);
}

.cabecera-seccion {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 35px;
    margin-bottom: 35px;
}

.cabecera-seccion > p {
    max-width: 350px;
    margin: 0 0 5px;
    color: var(--gris);
    font-size: 13px;
    line-height: 1.8;
}

.servicios-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.tarjeta-servicio {
    min-width: 0;
    background: #ffffff;
    border: 1px solid var(--borde);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.tarjeta-servicio:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.07);
}

.tarjeta-servicio > img {
    display: block;
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.tarjeta-contenido {
    padding: 23px 22px 27px;
}

.numero {
    color: var(--rojo);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
}

.tarjeta-contenido h3 {
    margin: 10px 0 8px;
    font-size: 17px;
    font-weight: 600;
    line-height: 1.4;
}

.tarjeta-contenido p {
    margin: 0;
    color: var(--gris);
    font-size: 12px;
    line-height: 1.8;
}

/* GALERÍA DE OBRAS */

.obras {
    background: #ffffff;
}

.galeria {
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    grid-template-rows: 230px 230px;
    gap: 18px;
}

.galeria figure {
    min-width: 0;
    min-height: 0;
    position: relative;
    margin: 0;
    overflow: hidden;
    background: #eeeeec;
}

.galeria .galeria-grande {
    grid-row: span 2;
}

.galeria figure::after {
    content: "";
    position: absolute;
    inset: 35% 0 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.62));
    pointer-events: none;
}

.galeria img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.45s ease;
}

.galeria figure:hover img {
    transform: scale(1.04);
}

.galeria figcaption {
    position: absolute;
    z-index: 1;
    right: 20px;
    bottom: 17px;
    left: 20px;
    color: #ffffff;
    font-size: 12px;
    font-weight: 600;
}

.aviso-fotos {
    margin: 14px 0 0;
    color: #888888;
    font-size: 10px;
    line-height: 1.6;
}

/* LLAMADA A LA ACCIÓN */

.llamada {
    padding: 55px 10%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    background: var(--rojo);
    color: #ffffff;
}

.etiqueta-clara {
    color: #ffffff;
    opacity: 0.85;
}

.llamada h2 {
    margin: 8px 0 7px;
    font-size: clamp(29px, 3.5vw, 39px);
    line-height: 1.2;
    font-weight: 500;
    letter-spacing: -1px;
}

.llamada p {
    margin: 0;
    color: #ffffff;
    font-size: 13px;
}

.boton-blanco {
    flex-shrink: 0;
    background: #ffffff;
    color: var(--negro);
}

.boton-blanco:hover {
    background: #eeeeee;
}

/* CONTACTO Y FORMULARIO */

.contacto {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 75px;
    align-items: start;
}

.contacto-info > p {
    max-width: 390px;
    margin: 22px 0 30px;
    color: var(--gris);
    font-size: 14px;
    line-height: 1.9;
}

.dato-contacto {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    margin-top: 23px;
}

.dato-contacto span {
    color: var(--gris);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 1.5px;
}

.dato-contacto strong {
    font-size: 14px;
    font-weight: 600;
    overflow-wrap: anywhere;
}

.dato-contacto:hover strong {
    color: var(--rojo);
}

.formulario {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 32px;
    background: var(--fondo-suave);
    border: 1px solid var(--borde);
}

.formulario h3 {
    margin: 0;
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.formulario > p {
    margin: 5px 0 25px;
    color: var(--gris);
    font-size: 12px;
}

.formulario label {
    display: block;
    margin: 0 0 7px;
    font-size: 11px;
    font-weight: 700;
}

.formulario input,
.formulario select,
.formulario textarea {
    display: block;
    width: 100%;
    min-width: 0;
    margin: 0 0 18px;
    padding: 12px;
    border: 1px solid #dededb;
    border-radius: 2px;
    background: #ffffff;
    color: var(--negro);
    font-size: 13px;
    outline: none;
}

.formulario input:focus,
.formulario select:focus,
.formulario textarea:focus {
    border-color: var(--rojo);
}

.formulario input::placeholder,
.formulario textarea::placeholder {
    color: #999999;
}

.formulario textarea {
    resize: vertical;
}

.campos-dobles {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.campos-dobles > div {
    min-width: 0;
}

.boton-enviar {
    align-self: flex-start;
    border: 0;
}

.nota-formulario {
    display: block;
    margin-top: 13px;
    color: var(--gris);
    font-size: 10px;
    line-height: 1.7;
}

/* PIE DE PÁGINA */

.pie {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    padding: 27px 7%;
    border-top: 1px solid var(--borde);
    background: #ffffff;
}

.pie-marca img {
    width: 42px;
    height: 42px;
    object-fit: contain;
}

.pie-marca span {
    font-size: 10px;
}

.pie > p {
    margin: 0;
    color: var(--gris);
    font-size: 10px;
}

.volver-arriba {
    color: var(--gris);
    font-size: 11px;
}

.volver-arriba:hover {
    color: var(--rojo);
}

.copyright {
    width: 100%;
    padding-top: 15px;
    border-top: 1px solid var(--borde);
    color: #888888;
    font-size: 10px;
}

/* TABLETAS Y MÓVILES */

@media (max-width: 950px) {
    .cabecera {
        padding-right: 4%;
        padding-left: 4%;
    }

    .menu {
        gap: 15px;
    }

    .marca span {
        font-size: 10px;
    }

    .hero-contenido {
        padding-right: 7%;
        padding-left: 7%;
    }

    .introduccion {
        gap: 35px;
        padding-right: 7%;
        padding-left: 7%;
    }

    .seccion {
        padding-right: 7%;
        padding-left: 7%;
    }

    .tarjeta-servicio > img {
        height: 180px;
    }

    .contacto {
        gap: 35px;
    }

    .formulario {
        padding: 24px;
    }
}

@media (max-width: 700px) {
    .cabecera {
        padding: 13px 18px 0;
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .marca {
        justify-content: center;
        gap: 9px;
    }

    .marca img {
        width: 48px;
        height: 48px;
    }

    .marca span {
        font-size: 11px;
    }

    .menu {
        justify-content: space-between;
        gap: 7px;
        padding: 12px 0;
        border-top: 1px solid var(--borde);
    }

    .menu a {
        font-size: 10px;
    }

    .menu .menu-boton {
        padding: 8px 10px;
    }

    .hero {
        min-height: 590px;
    }

    .hero-fondo {
        background-position: 58% center;
        background-image:
            linear-gradient(
                90deg,
                rgba(12, 12, 12, 0.82),
                rgba(12, 12, 12, 0.42)
            ),
            url("https://images.unsplash.com/photo-1600585154340-be6161a56a0c?auto=format&fit=crop&w=1200&q=85");
    }

    .hero-contenido {
        padding: 70px 25px 100px;
    }

    .sobretitulo,
    .etiqueta {
        font-size: 9px;
        letter-spacing: 1.5px;
    }

    .hero h1 {
        font-size: clamp(37px, 10vw, 52px);
        letter-spacing: -1.5px;
    }

    .hero-contenido > p {
        font-size: 13px;
        line-height: 1.8;
    }

    .hero-botones {
        align-items: stretch;
        flex-direction: column;
    }

    .hero-botones .boton {
        align-self: flex-start;
    }

    .hero-pie {
        right: 20px;
        left: 20px;
        font-size: 8px;
        letter-spacing: 0.8px;
    }

    .introduccion {
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 65px 25px;
    }

    .intro-texto {
        padding-top: 10px;
    }

    .introduccion h2,
    .cabecera-seccion h2,
    .contacto h2 {
        font-size: 32px;
    }

    .seccion {
        padding: 65px 25px;
    }

    .cabecera-seccion {
        align-items: flex-start;
        flex-direction: column;
        gap: 15px;
        margin-bottom: 25px;
    }

    .cabecera-seccion > p {
        font-size: 12px;
    }

    .servicios-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .tarjeta-servicio > img {
        height: 235px;
    }

    .tarjeta-contenido {
        padding: 20px;
    }

    .galeria {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: 250px 170px;
        gap: 10px;
    }

    .galeria .galeria-grande {
        grid-column: 1 / -1;
        grid-row: auto;
    }

    .galeria figcaption {
        right: 10px;
        bottom: 10px;
        left: 10px;
        font-size: 10px;
    }

    .llamada {
        align-items: flex-start;
        flex-direction: column;
        padding: 42px 25px;
        gap: 22px;
    }

    .llamada h2 {
        font-size: 30px;
    }

    .contacto {
        grid-template-columns: 1fr;
        gap: 35px;
    }

    .formulario {
        padding: 22px 18px;
    }

    .campos-dobles {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .pie {
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
        padding: 25px;
    }

    .copyright {
        margin-top: 5px;
    }
}

@media (max-width: 360px) {
    .cabecera {
        padding-right: 12px;
        padding-left: 12px;
    }

    .marca img {
        width: 42px;
        height: 42px;
    }

    .marca span {
        font-size: 9px;
        letter-spacing: 0.5px;
    }

    .menu {
        gap: 5px;
    }

    .menu a {
        font-size: 9px;
    }

    .menu .menu-boton {
        padding: 7px;
    }

    .hero-contenido {
        padding-right: 18px;
        padding-left: 18px;
    }

    .introduccion,
    .seccion,
    .llamada {
        padding-right: 18px;
        padding-left: 18px;
    }

    .hero h1 {
        font-size: 36px;
    }

    .galeria {
        grid-template-rows: 210px 145px;
    }

    .formulario {
        padding: 18px 13px;
    }
}