/* =============================================
   ESTILOS PARA PÁGINA DE CONTRATISTAS
   ============================================= */

:root {
    --gradiente-principal: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradiente-secundario: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
    --gradiente-whatsapp: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    --color-principal: #667eea;
    --color-secundario: #25d366;
    --color-whatsapp: #ffd700;
    --color-texto: #333;
    --color-texto-claro: #666;
    --color-fondo: #f8f9fa;
    --color-blanco: #ffffff;
    --sombra-suave: 0 4px 15px rgba(0, 0, 0, 0.1);
    --sombra-fuerte: 0 8px 25px rgba(0, 0, 0, 0.15);
    --transicion: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--color-texto);
    background: var(--color-fondo);
}

/* HEADER */
.header-contratistas {
    background: var(--color-blanco);
    box-shadow: var(--sombra-suave);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.contenedor-header {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo h2 {
    color: var(--color-principal);
    font-size: 1.8rem;
    font-weight: 700;
}

.logo a {
    text-decoration: none;
}

.Viive{
    display: flex;
    width: 138px;
    height: 56px;
}
/* MENÚ HAMBURGUESA - OCULTO POR DEFECTO EN DESKTOP */
.menu-hamburguesa {
    display: none;
}

.menu-principal {
    display: flex;
    gap: 30px;
    align-items: center;
}

.enlace-menu {
    color: var(--color-texto);
    text-decoration: none;
    font-weight: 500;
    padding: 10px 15px;
    border-radius: 8px;
    transition: var(--transicion);
    display: flex;
    align-items: center;
    gap: 8px;
}

.enlace-menu:hover {
    background: var(--gradiente-principal);
    color: var(--color-blanco);
    transform: translateY(-2px);
}

.enlace-activo {
    background: var(--gradiente-principal);
    color: var(--color-blanco);
    box-shadow: var(--sombra-suave);
}

.empresas-link {
    background: var(--gradiente-secundario);
    color: var(--color-blanco);
}

.empresas-link:hover {
    background: linear-gradient(135deg, #128c7e, #0d6b5a);
}

/* HERO SECTION */
.hero-contratistas {
    background: var(--gradiente-principal);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.hero-contratistas::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="10" cy="60" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="90" cy="40" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
    z-index: 1;
}

.contenedor-hero {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

.contenido-hero {
    text-align: center;
    color: var(--color-blanco);
}

.titulo-hero {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.titulo-hero i {
    font-size: 2.5rem;
    color: var(--color-whatsapp);
}

.subtitulo-hero {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

/* FILTROS DE BÚSQUEDA */
.filtros-busqueda {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--sombra-fuerte);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    align-items: end;
}

.filtro-grupo {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filtro-grupo label {
    color: var(--color-blanco);
    font-weight: 600;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.filtro-grupo select {
    padding: 12px 15px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    background: var(--color-blanco);
    color: var(--color-texto);
    box-shadow: var(--sombra-suave);
    transition: var(--transicion);
}

.filtro-grupo select:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.boton-buscar {
    background: var(--gradiente-whatsapp);
    color: var(--color-texto);
    padding: 15px 25px;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transicion);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: var(--sombra-suave);
    position: relative;
    overflow: hidden;
}

.boton-buscar::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.boton-buscar:hover::before {
    left: 100%;
}

.boton-buscar:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.4);
}

/* SECCIÓN DE CONTRATISTAS */
.seccion-contratistas {
    padding: 80px 0;
}

.contenedor-contratistas {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.titulo-seccion {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 50px;
    color: var(--color-principal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.titulo-seccion i {
    color: var(--color-secundario);
}

/* LOADING */
.loading-contratistas {
    text-align: center;
    padding: 60px 0;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--color-principal);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-contratistas p {
    color: var(--color-texto-claro);
    font-size: 1.1rem;
}

/* GRID DE CONTRATISTAS */
.grid-contratistas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.tarjeta-contratista {
    background: var(--color-blanco);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--sombra-suave);
    transition: var(--transicion);
    border: 1px solid #f0f0f0;
    position: relative;
    overflow: hidden;
}

.tarjeta-contratista::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradiente-principal);
}

.tarjeta-contratista:hover {
    transform: translateY(-10px);
    box-shadow: var(--sombra-fuerte);
}

.header-tarjeta {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.info-empresa h3 {
    color: var(--color-principal);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.info-empresa p {
    color: var(--color-texto-claro);
    font-size: 0.95rem;
}

.estado-contratista {
    background: var(--gradiente-secundario);
    color: var(--color-blanco);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.info-contacto {
    margin-bottom: 20px;
}

.info-contacto p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    color: var(--color-texto-claro);
    font-size: 0.95rem;
}

.info-contacto i {
    color: var(--color-principal);
    width: 16px;
    text-align: center;
}

.descripcion-contratista {
    margin-bottom: 20px;
}

.descripcion-contratista p {
    color: var(--color-texto-claro);
    line-height: 1.6;
    font-size: 0.95rem;
}

.servicios-contratista {
    margin-bottom: 25px;
}

.servicios-contratista h4 {
    color: var(--color-principal);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.lista-servicios {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.servicio-tag {
    background: rgba(102, 126, 234, 0.1);
    color: var(--color-principal);
    padding: 4px 10px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.calificacion-contratista {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.estrellas {
    display: flex;
    gap: 2px;
}

.estrella {
    color: var(--color-whatsapp);
    font-size: 1.1rem;
}

.calificacion-numero {
    color: var(--color-texto-claro);
    font-size: 0.9rem;
    font-weight: 600;
}

.botones-contratista {
    display: flex;
    gap: 10px;
}

.boton-contactar {
    flex: 1;
    background: var(--gradiente-principal);
    color: var(--color-blanco);
    padding: 12px 20px;
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transicion);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.boton-contactar:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.boton-whatsapp {
    background: var(--gradiente-secundario);
    color: var(--color-blanco);
    padding: 12px 15px;
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transicion);
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.boton-whatsapp:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
}

/* SIN RESULTADOS */
.sin-resultados {
    text-align: center;
    padding: 80px 20px;
    background: var(--color-blanco);
    border-radius: 20px;
    box-shadow: var(--sombra-suave);
}

.icono-sin-resultados {
    font-size: 4rem;
    color: var(--color-texto-claro);
    margin-bottom: 20px;
}

.sin-resultados h3 {
    color: var(--color-principal);
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.sin-resultados p {
    color: var(--color-texto-claro);
    margin-bottom: 30px;
}

.boton-contacto {
    background: var(--gradiente-principal);
    color: var(--color-blanco);
    padding: 15px 25px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transicion);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.boton-contacto:hover {
    transform: translateY(-3px);
    box-shadow: var(--sombra-fuerte);
}

/* SECCIÓN DE SOLICITUD */
.seccion-solicitud {
    background: var(--gradiente-secundario);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.seccion-solicitud::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="10" cy="60" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="90" cy="40" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
    z-index: 1;
}

.contenedor-solicitud {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

.contenido-solicitud {
    text-align: center;
    color: var(--color-blanco);
}

.titulo-solicitud {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.titulo-solicitud i {
    color: var(--color-whatsapp);
}

.subtitulo-solicitud {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.95;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.botones-solicitud {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.boton-solicitud-principal {
    background: var(--gradiente-whatsapp);
    color: var(--color-texto);
    padding: 18px 35px;
    border: none;
    border-radius: 15px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transicion);
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--sombra-suave);
    position: relative;
    overflow: hidden;
}

.boton-solicitud-principal::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.boton-solicitud-principal:hover::before {
    left: 100%;
}

.boton-solicitud-principal:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(255, 215, 0, 0.4);
}

.boton-whatsapp {
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-blanco);
    padding: 18px 35px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transicion);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    backdrop-filter: blur(10px);
}

.boton-whatsapp:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
    box-shadow: var(--sombra-fuerte);
}

/* MODAL DE SOLICITUD */
.modal-solicitud {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 20px;
}

.modal-solicitud.show {
    display: flex;
}

.modal-contenido {
    background: var(--color-blanco);
    border-radius: 20px;
    box-shadow: var(--sombra-fuerte);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 30px;
    border-bottom: 1px solid #f0f0f0;
}

.modal-header h3 {
    color: var(--color-principal);
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.cerrar-modal {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-texto-claro);
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: var(--transicion);
}

.cerrar-modal:hover {
    background: #f0f0f0;
    color: var(--color-principal);
}

.formulario-solicitud {
    padding: 30px;
}

.grupo-formulario {
    margin-bottom: 25px;
}

.grupo-formulario label {
    display: block;
    color: var(--color-principal);
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.grupo-formulario input,
.grupo-formulario select,
.grupo-formulario textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #f0f0f0;
    border-radius: 10px;
    font-size: 1rem;
    transition: var(--transicion);
    background: var(--color-blanco);
}

.grupo-formulario input:focus,
.grupo-formulario select:focus,
.grupo-formulario textarea:focus {
    outline: none;
    border-color: var(--color-principal);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.grupo-formulario textarea {
    resize: vertical;
    min-height: 100px;
}

.botones-formulario {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 30px;
}

.boton-cancelar {
    background: #6c757d;
    color: var(--color-blanco);
    padding: 12px 25px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transicion);
    display: flex;
    align-items: center;
    gap: 8px;
}

.boton-cancelar:hover {
    background: #5a6268;
    transform: translateY(-2px);
}

.boton-enviar {
    background: var(--gradiente-principal);
    color: var(--color-blanco);
    padding: 12px 25px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transicion);
    display: flex;
    align-items: center;
    gap: 8px;
}

.boton-enviar:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

/* FOOTER */
.footer-contratistas {
    background: var(--color-blanco);
    border-top: 1px solid #f0f0f0;
    padding: 40px 0 20px;
    background-color: #333;
}

.contenedor-footer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.info-footer {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 30px;
}

.logo-footer h3 {
    color: var(--color-principal);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.logo-footer p {
    color: var(--color-blanco);
    font-size: 0.95rem;
    line-height: 1.6;
}

.contacto-footer h4 {
    color: var(--color-texto);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.contacto-footer p {
    color: var(--color-blanco);
    font-size: 0.95rem;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.contacto-footer i {
    color: var(--color-principal);
    width: 16px;
    text-align: center;
}

.derechos-footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #f0f0f0;
}

.derechos-footer p {
    color: var(--color-texto-claro);
    font-size: 0.9rem;
}

/* RESPONSIVE DESIGN */
@media screen and (max-width: 420px) {
    .contenedor-header {
        justify-content: space-between;
        align-items: center;
    }
    
    .Viive{
        width: 100px;
        height: 46px;
    }
    .menu-hamburguesa {
        display: flex;
        flex-direction: column;
        justify-content: space-around;
        width: 35px;
        height: 35px;
        background: transparent;
        border: none;
        cursor: pointer;
        padding: 5px;
        z-index: 1001;
        position: relative;
        border-radius: 5px;
        transition: background-color 0.3s ease;
    }
    
    .menu-hamburguesa:hover {
        background-color: rgba(102, 126, 234, 0.1);
    }
    
    .linea-hamburguesa {
        width: 25px;
        height: 3px;
        background: var(--color-principal);
        border-radius: 2px;
        transition: all 0.3s ease;
        transform-origin: center;
        display: block;
    }
    
    .menu-hamburguesa.menu-activo .linea-hamburguesa:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .menu-hamburguesa.menu-activo .linea-hamburguesa:nth-child(2) {
        opacity: 0;
    }
    
    .menu-hamburguesa.menu-activo .linea-hamburguesa:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    .menu-principal {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding: 40px 20px;
        gap: 30px;
        transition: left 0.3s ease;
        z-index: 1000;
        box-shadow: var(--sombra-suave);
        display: none;
    }
    
    .menu-principal.menu-abierto {
        display: flex;
        left: 0;
    }
    
    .menu-principal a {
        font-size: 1.2rem;
        padding: 15px 30px;
        width: 100%;
        text-align: center;
        border-radius: 15px;
        background: linear-gradient(135deg, #f8f9fa, #e9ecef);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        transition: var(--transicion);
    }
    
    .menu-principal a:hover {
        background: var(--gradiente-principal);
        color: var(--color-blanco);
        transform: translateY(-2px);
        box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    }
    
    .titulo-hero {
        font-size: 2rem;
        flex-direction: column;
        gap: 10px;
    }
    
    .subtitulo-hero {
        font-size: 1.1rem;
        padding: 0 15px;
    }
    
    .filtros-busqueda {
        grid-template-columns: 1fr;
        gap: 15px;
        padding: 20px;
    }
    
    .grid-contratistas {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .tarjeta-contratista {
        padding: 20px;
    }
    
    .botones-solicitud {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    
    .boton-solicitud-principal,
    .boton-whatsapp {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .modal-contenido {
        margin: 10px;
        max-height: 95vh;
    }
    
    .formulario-solicitud {
        padding: 20px;
    }
    
    .botones-formulario {
        flex-direction: column;
    }
    
    .info-footer {
        grid-template-columns: 1fr;
        gap: 25px;
    }
}

@media screen and (min-width: 421px) and (max-width: 917px) {
    .contenedor-header {
        justify-content: space-between;
        align-items: center;
    }
    
    .menu-hamburguesa {
        display: flex;
        flex-direction: column;
        justify-content: space-around;
        width: 40px;
        height: 40px;
        background: transparent;
        border: none;
        cursor: pointer;
        padding: 6px;
        z-index: 1001;
        position: relative;
        border-radius: 6px;
        transition: background-color 0.3s ease;
    }
    
    .menu-hamburguesa:hover {
        background-color: rgba(102, 126, 234, 0.1);
    }
    
    .linea-hamburguesa {
        width: 28px;
        height: 3px;
        background: var(--color-principal);
        border-radius: 2px;
        transition: all 0.3s ease;
        transform-origin: center;
        display: block;
    }
    
    .menu-hamburguesa.menu-activo .linea-hamburguesa:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }
    
    .menu-hamburguesa.menu-activo .linea-hamburguesa:nth-child(2) {
        opacity: 0;
    }
    
    .menu-hamburguesa.menu-activo .linea-hamburguesa:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .menu-principal {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding: 50px 30px;
        gap: 35px;
        transition: left 0.3s ease;
        z-index: 1000;
        box-shadow: var(--sombra-suave);
        display: none;
    }
    
    .menu-principal.menu-abierto {
        display: flex;
        left: 0;
    }
    
    .menu-principal a {
        font-size: 1.3rem;
        padding: 18px 35px;
        width: 100%;
        text-align: center;
        border-radius: 15px;
        background: linear-gradient(135deg, #f8f9fa, #e9ecef);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        transition: var(--transicion);
    }
    
    .menu-principal a:hover {
        background: var(--gradiente-principal);
        color: var(--color-blanco);
        transform: translateY(-2px);
        box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    }
    
    .titulo-hero {
        font-size: 2.5rem;
    }
    
    .filtros-busqueda {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
    }
    
    .grid-contratistas {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .botones-solicitud {
        gap: 15px;
    }
}

@media screen and (min-width: 918px) {
    .filtros-busqueda {
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }
    
    .grid-contratistas {
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
    }
    
    .info-footer {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}