:root {
    --color-navy: #261b41;
    --color-dark-blue: #4a3b6d;
    --color-medium-blue: #6f5f9b;
    --color-light-blue: #af9ec5;
    --color-off-white: #f1ebfa;

    --sidebar-width-expanded: 260px;
    --sidebar-width-collapsed: 88px;
    --main-transition: all 0.3s ease-in-out;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--color-off-white);
    color: var(--color-navy);
    overflow-x: hidden; 
}

.barra-lateral {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: var(--sidebar-width-collapsed);
    background-color: var(--color-navy);
    color: var(--color-off-white);
    padding: 1rem;
    margin-right: 10vh;
    display: flex;
    flex-direction: column;
    transition: var(--main-transition);
    z-index: 1000;
    overflow-x: hidden; 
}

.barra-lateral:not(.colapsado) {
    width: var(--sidebar-width-expanded);
}

.encabezado-barra-lateral {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    min-height: 40px;
}

.logo-barra-lateral {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-off-white);
    text-decoration: none;
    opacity: 0;
    transform: translateX(-20px);
    transition: var(--main-transition);
}

.barra-lateral:not(.colapsado) .logo-barra-lateral {
    opacity: 1;
    transform: translateX(0);
}

.logo-icono {
    font-size: 1.5rem;
    min-width: 40px; 
    text-align: center;
}

#interruptor-barra-lateral {
    background: transparent;
    border: none;
    color: var(--color-light-blue);
    font-size: 1.25rem;
    cursor: pointer;
    transition: var(--main-transition);
}

#interruptor-barra-lateral:hover {
    color: var(--color-off-white);
}

.barra-lateral:not(.colapsado) #interruptor-barra-lateral {
    transform: rotate(-180deg);
}

.nav-barra-lateral {
    list-style: none;
    padding: 0;
    margin: 0;
    flex-grow: 1; 
}

.item-nav {
    margin-bottom: 0.5rem;
}

.enlace-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0.5rem;
    border-radius: 8px;
    color: var(--color-light-blue);
    text-decoration: none;
    white-space: nowrap; 
    transition: var(--main-transition);
}

.enlace-nav i {
    font-size: 1.25rem;
    min-width: 40px; 
    text-align: center;
    transition: all 0.2s ease;
}

.enlace-nav:hover {
    background-color: var(--color-dark-blue);
    color: var(--color-off-white);
    transform: translateX(5px);
}

.enlace-nav.activo {
    background-color: var(--color-medium-blue);
    color: var(--color-navy);
    font-weight: 500;
}

.enlace-nav.activo i {
    transform: scale(1.1);
}

.texto-enlace-nav {
    opacity: 0;
    transform: translateX(-10px);
    transition: var(--main-transition);
}

.barra-lateral:not(.colapsado) .texto-enlace-nav {
    opacity: 1;
    transform: translateX(0);
}

.pie-barra-lateral {
    border-top: 1px solid var(--color-dark-blue);
    padding-top: 1rem;
}

#contenido-principal {
    position: relative;
    padding-left: var(--sidebar-width-collapsed);
    transition: var(--main-transition);
    width: 100%;
}

.barra-lateral:not(.colapsado) ~ #contenido-principal {
    padding-left: var(--sidebar-width-expanded);
}

section {
    padding: 100px 10%; 
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.titulo-seccion {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-dark-blue);
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
}

.titulo-seccion::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 50px;
    height: 4px;
    background-color: var(--color-medium-blue);
}

#inicio {
    background-color: var(--color-off-white);
    min-height: 100vh;
    position: relative; 
    overflow: hidden; 
}

.contenido-hero {
    max-width: 700px;
}

.animar-hero {
    opacity: 0;
}

.saludo-hero {
    color: var(--color-medium-blue);
    font-weight: 600;
    font-size: 1.2rem;
    letter-spacing: 1px;
}

.titulo-hero {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--color-navy);
    margin: 0.5rem 0;
}

.subtitulo-hero {
    font-size: 2rem;
    font-weight: 500;
    color: var(--color-dark-blue);
    margin-bottom: 1.5rem;
    min-height: 2.5rem; 
}

.cursor-escribiendo {
    animation: blink 0.7s infinite;
    font-weight: 300;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.btn-principal {
    background-color: var(--color-medium-blue);
    color: var(--color-off-white);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: var(--main-transition);
    border: 2px solid var(--color-medium-blue);
}

.btn-principal:hover {
    background-color: var(--color-dark-blue);
    border-color: var(--color-dark-blue);
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.btn-secundario {
    background-color: transparent;
    color: var(--color-medium-blue);
    border: 2px solid var(--color-medium-blue);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: var(--main-transition);
    margin-left: 1rem;
}

.btn-secundario:hover {
    background-color: var(--color-medium-blue);
    color: var(--color-off-white);
    transform: translateY(-3px);
}

.contenedor-estatico-tech {
    position: absolute;
    top: 40%; 
    right: 5%;
    transform: translateY(-50%);
    gap: 1rem; 
    z-index: 10;
}

.item-estatico-tech {
    display: flex;
    align-items: center;
    background-color: #ffffff;
    border-radius: 8px;
    padding: 0.75rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: var(--main-transition);
    text-decoration: none;
    overflow: hidden; 
    width: 60px; 
    cursor: pointer;
}

.item-estatico-tech i {
    font-size: 2.2rem;
    color: var(--color);
    transition: var(--main-transition);
    min-width: 35px; 
}

.item-estatico-tech .texto-estatico-tech {
    display: flex;
    flex-direction: column; 
    margin-left: 0.75rem;
    opacity: 0;
    transform: translateX(-10px);
    transition: var(--main-transition);
    white-space: nowrap;
}

.item-estatico-tech .texto-estatico-tech span {
    font-weight: 600; 
    color: var(--color-navy);
    font-size: 1rem;
    line-height: 1.2;
}

.item-estatico-tech .texto-estatico-tech small {
    font-weight: 400;
    font-size: 0.8rem;
    color: var(--color-dark-blue);
}


.item-estatico-tech:hover {
    transform: scale(1.05) translateX(-10px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
    width: 200px; 
}

.item-estatico-tech:hover .texto-estatico-tech {
    opacity: 1;
    transform: translateX(0);
}

#sobre-mi {
    background-color: #ffffff;
}

.texto-sobre-mi {
    line-height: 1.8;
    font-size: 1.1rem;
    color: var(--color-dark-blue);
    text-align: justify; 
}

.foto-sobre-mi {
    width: 100%;
    max-width: 350px;
    height: auto;
    border-radius: 15px;
    border: 5px solid var(--color-light-blue);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

#habilidades {
    background-color: var(--color-light-blue); 
}

.tarjeta-habilidad {
    background-color: #ffffff;
    border: 0;
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: var(--main-transition);
}

.tarjeta-habilidad:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.tarjeta-habilidad i {
    font-size: 3rem;
    color: var(--color-medium-blue);
    margin-bottom: 1rem;
    transition: var(--main-transition), transform 0.3s ease-out, color 0.3s ease-out; 
}

.tarjeta-habilidad:hover i {
    transform: scale(1.1) rotate(-5deg);
    color: var(--color-navy); 
}

.tarjeta-habilidad h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: 0.5rem;
}

#educacion {
    background-color: #ffffff;
}

.tarjeta-educacion {
    background-color: var(--color-off-white);
    border: 1px solid var(--color-light-blue);
    border-radius: 10px;
    padding: 2rem;
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.tarjeta-educacion i {
    font-size: 2.5rem;
    color: var(--color-medium-blue);
    padding: 1.5rem;
    background-color: #ffffff;
    border-radius: 50%;
}

.tarjeta-educacion h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-navy);
    margin: 0;
}

.tarjeta-educacion p {
    font-size: 1rem;
    color: var(--color-dark-blue);
    margin: 0;
}

#portafolio {
    background-color: var(--color-off-white);
}

.tarjeta-proyecto {
    background-color: #ffffff;
    border: 0;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: var(--main-transition);
    overflow: hidden; 
    border: 3px solid transparent; 
    cursor: pointer;
    display: flex; 
    flex-direction: column; 
    height: 100%; 
}

.tarjeta-proyecto .cuerpo-tarjeta {
    padding: 1.5rem;
    display: flex; 
    flex-direction: column; 
    flex-grow: 1; 
}

.tarjeta-proyecto:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.img-tarjeta-proyecto {
    width: 100%;
    height: 250px;
    object-fit: cover;
    filter: grayscale(30%);
    transition: var(--main-transition);
}

.tarjeta-proyecto:hover .img-tarjeta-proyecto {
    filter: grayscale(0%);
    transform: scale(1.03);
}

.tarjeta-proyecto .titulo-tarjeta {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-navy);
}

.tarjeta-proyecto .texto-tarjeta {
    color: var(--color-dark-blue);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    flex-grow: 1; 
}

.tarjeta-proyecto .btn-ver-repo {
    background-color: var(--color-dark-blue);
    color: var(--color-off-white);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--main-transition);
    align-self: flex-start; 
}

.tarjeta-proyecto .btn-ver-repo:hover {
    background-color: var(--color-navy);
}

#contacto {
    background-color: var(--color-dark-blue); 
    color: var(--color-off-white);
}

#contacto .titulo-seccion {
    color: var(--color-off-white);
}

#contacto .titulo-seccion::after {
    background-color: var(--color-light-blue);
}

#contacto .lead {
    color: var(--color-light-blue);
}

#contacto .form-label {
    color: var(--color-light-blue);
}

.form-control {
    background-color: var(--color-off-white);
    border: 1px solid var(--color-light-blue);
    padding: 0.75rem;
    border-radius: 8px;
}

.form-control:focus {
    background-color: #ffffff;
    border-color: var(--color-medium-blue);
    box-shadow: 0 0 0 0.25rem rgba(95, 125, 155, 0.25);
}

#contacto .form-control {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--color-light-blue);
    color: var(--color-off-white);
}

#contacto .form-control::placeholder {
    color: var(--color-light-blue);
}

#contacto .form-control:focus {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: var(--color-off-white);
    box-shadow: 0 0 0 0.25rem rgba(235, 242, 250, 0.25);
    color: var(--color-off-white);
}

#contacto .btn-principal {
    background-color: var(--color-off-white);
    color: var(--color-navy);
    border-color: var(--color-off-white);
    font-weight: 600;
}

#contacto .btn-principal:hover {
    background-color: var(--color-light-blue);
    color: var(--color-navy);
    border-color: var(--color-light-blue);
}


#mensaje-validacion {
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.animar {
    opacity: 0; 
}

.pie-pagina-principal {
    padding: 2rem 10% 2rem 10%; 
    background-color: var(--color-dark-blue); 
    text-align: center;
    color: var(--color-light-blue); 
    font-size: 0.9rem;
    border-top: 1px solid var(--color-medium-blue); 
}

.pie-pagina-principal p {
    margin: 0;
}

@media (max-width: 1200px) {
    .contenedor-estatico-tech {
        right: 2%;
        transform: translateY(-50%) scale(0.9);
    }

    section {
        padding: 100px 8%; 
    }
}

@media (max-width: 992px) {
    .barra-lateral {
        width: var(--sidebar-width-collapsed);
    }
    
    .barra-lateral:not(.colapsado) {
        width: var(--sidebar-width-collapsed);
    }
    
    .barra-lateral .texto-enlace-nav,
    .barra-lateral:not(.colapsado) .texto-enlace-nav,
    .barra-lateral .logo-barra-lateral,
    .barra-lateral:not(.colapsado) .logo-barra-lateral,
    #interruptor-barra-lateral {
        display: none;
    }
    
    .encabezado-barra-lateral {
        justify-content: center; 
    }

    #contenido-principal {
        padding-left: var(--sidebar-width-collapsed);
    }
    
    .barra-lateral:not(.colapsado) ~ #contenido-principal {
        padding-left: var(--sidebar-width-collapsed);
    }

    section {
        padding: 80px 5%; 
    }

    .titulo-hero { font-size: 2.5rem; }
    .subtitulo-hero { font-size: 1.5rem; }
    .titulo-seccion { font-size: 2rem; }

    .contenedor-logos-tech {
        margin-top: 3rem;
    }
    .contenedor-logos-tech span {
        font-size: 0.9rem;
        color: var(--color-dark-blue);
        font-weight: 500;
    }
    .logos-tech {
        display: flex;
        flex-wrap: wrap;
        justify-content: flex-start;
        gap: 2rem;
        margin-top: 1rem;
    }
    .logos-tech i {
        font-size: 2.5rem;
        color: var(--color-medium-blue);
        transition: var(--main-transition);
    }
    .logos-tech i:hover {
        color: var(--color-navy);
        transform: scale(1.2);
    }
}

@media (max-width: 768px) {
    .barra-lateral {
        width: 100%;
        height: 70px;
        bottom: 0;
        top: auto; 
        left: 0;
        flex-direction: row;
        align-items: center;
        padding: 0;
        box-shadow: 0 -5px 15px rgba(0,0,0,0.1);
    }
    
    .encabezado-barra-lateral, .pie-barra-lateral {
        display: none; 
    }

    .nav-barra-lateral {
        display: flex;
        flex-direction: row;
        justify-content: space-around;
        width: 100%;
    }

    .item-nav {
        margin: 0;
        flex-grow: 1; 
    }
    
    .enlace-nav {
        flex-direction: column;
        justify-content: center;
        gap: 0.25rem;
        padding: 0.5rem;
        border-radius: 0;
    }

    .enlace-nav i {
        font-size: 1.1rem;
        margin: 0;
        min-width: auto;
    }
    
    .texto-enlace-nav {
        opacity: 1;
        transform: none;
        font-size: 0.7rem;
    }
    
    .enlace-nav:hover, .enlace-nav.activo {
        transform: none;
        background-color: var(--color-dark-blue);
        color: var(--color-off-white);
    }

    #contenido-principal {
        padding-left: 0;
        padding-bottom: 70px; 
    }
    
    section {
        min-height: auto; 
        padding: 60px 5%; 
    }
    
    #inicio {
        padding-top: 60px;
        text-align: center;
    }

    .logos-tech {
        justify-content: center;
        gap: 1.5rem;
    }
    .logos-tech i {
        font-size: 2rem;
    }
    
    .botones-hero {
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn-secundario {
        margin-left: 0;
    }
    
    .foto-sobre-mi {
        margin-top: 2rem;
    }

    .pie-pagina-principal {
        padding: 2rem 5%;
    }
}