*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:'Segoe UI', sans-serif;
}

body{
    background:#f4f6f8;
    color:#333;
}

/* =========================
   HEADER
========================= */

header{
    background:#0a1a2a;
    padding:15px 30px;
    display:flex;
    justify-content:space-between;
    align-items:center;
    color:white;
    position:sticky;
    top:0;
    z-index:1000;
    animation:headerFade .8s ease forwards;
    opacity:0;
}

@keyframes headerFade{
    from{opacity:0; transform:translateY(-10px);}
    to{opacity:1; transform:translateY(0);}
}

.brand{
    display:flex;
    align-items:center;
    gap:12px;
    animation:brandFade 1s ease forwards;
    opacity:0;
}

@keyframes brandFade{
    from{opacity:0; transform:scale(.95);}
    to{opacity:1; transform:scale(1);}
}

.brand img{
    width:92px;
}

.brand h1{
    font-size:1.4rem;
    font-weight:700;
}

/* =========================
   NAV
========================= */

nav a{
    color:white;
    text-decoration:none;
    margin-left:20px;
    font-weight:500;
}

nav a:hover{
    color:#00c6ff;
}

/* =========================
   CARRUSEL
========================= */

.carousel{
    height:90vh;
    overflow:hidden;
    position:relative;
}

.slides{
    display:flex;
    height:100%;
    transition:transform 1.5s ease-in-out;
}

.slide{
    min-width:100%;
    height:100%;
    position:relative;
    background-size:cover;
    background-position:center;
}

.slide::before{
    content:'';
    position:absolute;
    inset:0;
    background:rgba(0,0,0,.55);
}

.slide1{background-image:url('../img/photo-1498050108023-c5249f4df085.jpg');}
.slide2{background-image:url('../img/photo-1522202176988-66273c2fd55f.jpg');}
.slide3{background-image:url('../img/photo-1519389950473-47ba0277781c.jpg');}

.slide-text{
    position:absolute;
    top:50%;
    left:50%;
    transform:translate(-50%,-50%);
    color:white;
    text-align:center;
    opacity:0;
    transition:opacity 1s ease;
}

.slide.active .slide-text{
    opacity:1;
}

.slide-text h2{font-size:3rem;}
.slide-text p{font-size:1.3rem; margin-top:10px;}

@media(max-width:768px){
    .slide-text h2{font-size:2rem;}
    .slide-text p{font-size:1rem;}
}

/* =========================
   SECCIONES
========================= */

section{
    padding:60px 20px;
    max-width:1100px;
    margin:auto;
}

.cards{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:20px;
}

.card{
    background:white;
    padding:25px;
    border-radius:15px;
    box-shadow:0 10px 25px rgba(0,0,0,.1);
}

/* =========================
   BIENVENIDA
========================= */

.bienvenida{
    background:white;
    padding:70px 30px;
    margin:60px auto;
    border-radius:20px;
    box-shadow:0 15px 40px rgba(0,0,0,.08);
    text-align:center;
}

.bienvenida h2{
    font-size:2.4rem;
    margin-bottom:25px;
    color:#0a1a2a;
}

.bienvenida p{
    font-size:1.1rem;
    line-height:1.8;
    margin-bottom:15px;
    color:#555;
}

.bienvenida strong{color:#00c6ff;}

@media(max-width:768px){
    .bienvenida h2{font-size:1.8rem;}
    .bienvenida p{font-size:1rem;}
}

/* =========================
   SERVICIOS BG
========================= */

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

.servicio-bg{
    position:relative;
    min-height:300px;
    background-size:cover;
    background-position:center;
    border-radius:20px;
    overflow:hidden;
    box-shadow:0 15px 35px rgba(0,0,0,.15);
    transition:.35s ease;
}

.servicio-bg:hover{
    transform:translateY(-10px);
    box-shadow:0 25px 50px rgba(0,0,0,.25);
}

.card-overlay{
    position:absolute;
    inset:0;
    background:linear-gradient(rgba(10,26,42,.75),rgba(10,26,42,.9));
    color:white;
    padding:35px;
    display:flex;
    flex-direction:column;
    justify-content:center;
}

.card-overlay h3{
    color:#00c6ff;
    margin-bottom:15px;
}

.mantenimiento-bg{
    background-image:url('../img/mantenimiento.jpg');
}

/* =========================
   CLIENTES
========================= */

.clientes{text-align:center;}

.clientes-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
    gap:25px;
}

.cliente-card{
    background:white;
    padding:30px;
    border-radius:15px;
    box-shadow:0 10px 25px rgba(0,0,0,.08);
    font-weight:600;
    transition:.3s;
}

.cliente-card:hover{
    transform:translateY(-8px);
    color:#00c6ff;
}

/* =========================
   CONTACTO
========================= */

.contacto{
    background:#0a1a2a;
    color:white;
    border-radius:20px;
    margin:60px auto;
    padding:60px 30px;
}

.contacto-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:40px;
}

@media(max-width:768px){
    .contacto-grid{grid-template-columns:1fr;}
}

/* =========================
   FOOTER
========================= */

footer{
    background:#081421;
    color:#bbb;
    text-align:center;
    padding:20px;
}

/* =========================
   MENU RESPONSIVE
========================= */

#menu-toggle{display:none;}

.menu-icon{
    width:30px;
    height:22px;
    display:none;
    flex-direction:column;
    justify-content:space-between;
    cursor:pointer;
}

.menu-icon span{
    height:3px;
    background:white;
    border-radius:3px;
    transition:.35s;
}

/* DESKTOP */
.menu{
    display:flex;
    gap:20px;
}

/* MOBILE */
@media(max-width:768px){
    .menu-icon{display:flex;}

    .menu{
        position:absolute;
        top:85px;
        left:50%;
        transform:translateX(-50%);
        width:90%;
        max-width:360px;
        background:rgba(255,255,255,.95);
        backdrop-filter:blur(12px);
        border-radius:18px;
        box-shadow:0 20px 45px rgba(0,0,0,.25);
        flex-direction:column;
        text-align:center;
        max-height:0;
        overflow:hidden;
        transition:max-height .45s ease;
        z-index:1001;
    }

    .menu a{
        padding:16px;
        font-weight:600;
        color:#0a1a2a;
        border-bottom:1px solid rgba(0,0,0,.08);
        opacity:0;
        transform:translateY(-10px);
        transition:.3s;
    }

    .menu a:hover{
        background:#f4f6f8;
        color:#00c6ff;
    }

    #menu-toggle:checked + .menu-icon span:nth-child(1){
        transform:rotate(45deg) translate(5px,5px);
    }

    #menu-toggle:checked + .menu-icon span:nth-child(2){
        opacity:0;
    }

    #menu-toggle:checked + .menu-icon span:nth-child(3){
        transform:rotate(-45deg) translate(6px,-6px);
    }

    #menu-toggle:checked + .menu-icon + .menu{
        max-height:400px;
    }

    #menu-toggle:checked + .menu-icon + .menu a{
        opacity:1;
        transform:translateY(0);
    }

    header{
        justify-content:center;
    }

    .brand{
        flex-direction:column;
        text-align:center;
    }

    .menu-icon{
        position:absolute;
        right:20px;
    }
}

/* =========================
   OVERLAY
========================= */

.overlay{
    position:fixed;
    inset:0;
    background:rgba(0,0,0,.45);
    backdrop-filter:blur(6px);
    opacity:0;
    pointer-events:none;
    transition:.4s;
    z-index:900;
}

#menu-toggle:checked ~ .overlay{
    opacity:1;
    pointer-events:auto;
}
/* =========================
   CONTACTO MODERNO
========================= */

.info-contacto{
    display:flex;
    flex-direction:column;
    gap:22px;
}

.contact-item{
    display:flex;
    align-items:flex-start;
    gap:15px;
    background:rgba(255,255,255,.08);
    padding:18px 20px;
    border-radius:14px;
    transition:.3s ease;
}

.contact-item:hover{
    background:rgba(255,255,255,.15);
    transform:translateY(-4px);
}

.contact-item .icon{
    font-size:1.6rem;
    line-height:1;
}

.contact-item strong{
    display:block;
    font-size:.95rem;
    margin-bottom:4px;
    color:#00c6ff;
}

.contact-item p{
    margin:0;
    font-size:1rem;
    color:#eee;
}

.contact-item a{
    color:#fff;
    text-decoration:none;
}

.contact-item a:hover{
    color:#00c6ff;
    text-decoration:underline;
}

/* FORM MÁS MODERNO */

.form-contacto input,
.form-contacto textarea{
    background:#fff;
    border:none;
    border-radius:12px;
    padding:14px;
    font-size:15px;
}

.form-contacto textarea{
    resize:none;
}

.form-contacto button{
    margin-top:10px;
    background:linear-gradient(135deg,#00c6ff,#0099cc);
    color:#fff;
    border:none;
    padding:14px;
    border-radius:14px;
    font-size:16px;
    font-weight:600;
    cursor:pointer;
    transition:.3s ease;
}

.form-contacto button:hover{
    transform:translateY(-3px);
    box-shadow:0 10px 25px rgba(0,198,255,.35);
}

/* RESPONSIVE */

@media(max-width:768px){
    .contact-item{
        padding:16px;
    }
}
/* =========================
   FORMULARIO MODERNO
========================= */

.form-contacto.moderno{
    display:flex;
    flex-direction:column;
    gap:25px;
}

/* INPUT GROUP */
.input-group{
    position:relative;
}

.input-group input,
.input-group textarea{
    width:100%;
    padding:14px 14px;
    background:rgba(255,255,255,.08);
    border:1px solid rgba(255,255,255,.2);
    border-radius:14px;
    color:#fff;
    font-size:15px;
    outline:none;
    transition:.3s ease;
}

/* LABEL FLOTANTE */
.input-group label{
    position:absolute;
    top:50%;
    left:14px;
    transform:translateY(-50%);
    color:#ccc;
    font-size:14px;
    pointer-events:none;
    transition:.3s ease;
}

/* EFECTO AL ESCRIBIR */
.input-group input:focus,
.input-group textarea:focus{
    border-color:#00c6ff;
    background:rgba(255,255,255,.12);
}

.input-group input:focus + label,
.input-group textarea:focus + label,
.input-group input:valid + label,
.input-group textarea:valid + label{
    top:-8px;
    left:12px;
    background:#0a1a2a;
    padding:0 6px;
    font-size:12px;
    color:#00c6ff;
}

/* BOTÓN */
.form-contacto.moderno button{
    background:linear-gradient(135deg,#00c6ff,#0099cc);
    color:white;
    border:none;
    padding:15px;
    border-radius:16px;
    font-size:16px;
    font-weight:600;
    cursor:pointer;
    display:flex;
    justify-content:center;
    align-items:center;
    gap:8px;
    transition:.3s ease;
}

.form-contacto.moderno button span{
    transition:.3s ease;
}

.form-contacto.moderno button:hover{
    transform:translateY(-3px);
    box-shadow:0 15px 30px rgba(0,198,255,.35);
}

.form-contacto.moderno button:hover span{
    transform:translateX(6px);
}

/* RESPONSIVE */
@media(max-width:768px){
    .form-contacto.moderno{
        gap:20px;
    }
}
.form-mensaje {
    margin-top: 15px;
    font-size: 0.95rem;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.4s ease;
}

.form-mensaje.exito {
    color: #00c896;
    opacity: 1;
    transform: translateY(0);
}

.form-mensaje.error {
    color: #ff4d4d;
    opacity: 1;
    transform: translateY(0);
}

button[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
}