/* Variables CSS - Tema oscuro (negro / gris / blanco + acento rojo) */
:root {
    --primary-color: #ef4444;
    --secondary-color: #a3a3a3;
    --accent-color: #ef4444;
    --accent-hover: #f87171;
    --accent-deep: #b91c1c;

    /* Superficies */
    --bg-color: #0a0a0a;          /* fondo principal */
    --surface-color: #141414;     /* tarjetas / secciones */
    --surface-elevated: #1c1c1c;  /* tarjetas sobre superficie */
    --border-color: #2a2a2a;

    /* Texto */
    --text-color: #ededed;        /* texto principal */
    --text-muted: #a3a3a3;        /* texto secundario */
    --dark-color: #ededed;        /* (compat) ahora claro sobre fondo oscuro */
    --light-color: #141414;       /* (compat) ahora superficie oscura */

    --gradient-primary: linear-gradient(135deg, #ef4444 0%, #b91c1c 100%);
    --gradient-secondary: linear-gradient(135deg, #f87171 0%, #ef4444 100%);
    --gradient-contact: linear-gradient(135deg, #141414 0%, #1c1c1c 100%);
    --shadow-light: 0 2px 12px rgba(0,0,0,0.5);
    --shadow-medium: 0 8px 30px rgba(0,0,0,0.6);
    --border-radius: 12px;
    --transition: all 0.3s ease;
    --navbar-height: 76px;
}

/* Reset y base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    padding-top: var(--navbar-height);
    /* Evita el scroll horizontal en móvil sin romper position:sticky.
       'clip' (a diferencia de 'hidden') no crea un contenedor de scroll,
       así el efecto pinned de proyectos sigue funcionando en desktop. */
    overflow-x: clip;
}

/* ===== Overrides tema oscuro para clases de Bootstrap ===== */
.bg-light {
    background-color: var(--surface-color) !important;
    color: var(--text-color);
}

.bg-white,
.bg-body,
.bg-body-tertiary {
    background-color: var(--surface-color) !important;
}

.text-dark {
    color: var(--text-color) !important;
}

.text-muted {
    color: var(--text-muted) !important;
}

.text-light {
    color: var(--text-color) !important;
}

/* Tarjetas en superficie oscura */
.card {
    background-color: var(--surface-elevated);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.card .card-title,
.card .card-text,
.card h1, .card h2, .card h3, .card h4, .card h5, .card h6 {
    color: var(--text-color);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-color);
}

a {
    color: var(--accent-color);
}

a:hover {
    color: var(--accent-hover);
}

/* Badges: forzar texto blanco sobre acento */
.badge {
    color: #fff;
}

/* Navbar */
.navbar {
    background-color: rgba(33, 37, 41, 0.95) !important;
    backdrop-filter: blur(15px);
    transition: var(--transition);
    padding: 1rem 0;
    height: var(--navbar-height);
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Navbar con más transparencia al hacer scroll */
.navbar-scrolled {
    background-color: rgba(33, 37, 41, 0.98) !important;
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-light);
}

/* Navbar en la parte superior (sin scroll) - más opaco */
.navbar-top {
    background-color: rgba(33, 37, 41, 0.98) !important;
    backdrop-filter: blur(10px);
}

/* Navbar brand oculto - solo centrar navegación */
.navbar-brand {
    display: none;
}

/* Centrar el navbar - sin brand */
.navbar-nav {
    text-align: center;
}

.navbar-toggler {
    border: 2px solid rgba(239, 68, 68, 0.6);
    padding: 0.6rem 0.8rem;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.2) 0%, rgba(185, 28, 28, 0.2) 100%);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.navbar-toggler::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.navbar-toggler:hover::before {
    left: 100%;
}

.navbar-toggler:hover {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.3) 0%, rgba(185, 28, 28, 0.3) 100%);
    border-color: rgba(239, 68, 68, 0.8);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 0.25rem rgba(239, 68, 68, 0.25);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Menú desplegable simple que funciona */
.navbar-collapse {
    background: rgba(33, 37, 41, 0.95);
    margin-top: 1rem;
    border-radius: 8px;
    padding: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    padding: 0.8rem 1rem;
    margin-bottom: 0.3rem;
    border-radius: 6px;
    transition: all 0.3s ease;
    text-align: center;
}

.navbar-nav .nav-link:hover {
    color: #ef4444 !important;
    background: rgba(239, 68, 68, 0.1);
}

.navbar-nav .nav-link.active {
    color: #ef4444 !important;
    background: rgba(239, 68, 68, 0.15);
}

.navbar-nav .nav-link:last-child {
    margin-bottom: 0;
}

/* Desktop navbar links */
@media (min-width: 992px) {
    .navbar-collapse {
        background: none;
        backdrop-filter: none;
        margin-top: 0;
        border-radius: 0;
        border: none;
        padding: 0;
        box-shadow: none;
    }
    
    .navbar-nav .nav-link {
        font-weight: 500;
        margin: 0 1rem;
        transition: var(--transition);
        position: relative;
        padding: 0.8rem 0;
        color: rgba(255, 255, 255, 0.9) !important;
        border-radius: 0;
        background: none;
        margin-bottom: 0;
        border: none;
        font-size: 1rem;
    }
    
    .navbar-nav .nav-link::after {
        content: '';
        position: absolute;
        width: 0;
        height: 2px;
        bottom: 0;
        left: 50%;
        background: #ef4444;
        transition: var(--transition);
        transform: translateX(-50%);
    }
    
    .navbar-nav .nav-link:hover::after,
    .navbar-nav .nav-link.active::after {
        width: 80%;
    }
    
    .navbar-nav .nav-link:hover {
        color: #ef4444 !important;
        transform: none;
        box-shadow: none;
        border-color: transparent;
        background: none;
    }

    .navbar-nav .nav-link.active {
        color: #ef4444 !important;
        box-shadow: none;
        border-color: transparent;
        background: none;
    }
}

/* Botones personalizados */
.btn-primary {
    background: var(--gradient-primary);
    border: none;
    padding: 12px 30px;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: var(--transition);
    box-shadow: var(--shadow-light);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    background: var(--gradient-primary);
}

.btn-outline-primary {
    border: 2px solid #ef4444;
    color: #ef4444;
    font-weight: 600;
    padding: 12px 30px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.btn-outline-primary:hover {
    background: #ef4444;
    border-color: #ef4444;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* Cards */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

/* Secciones */
.section-padding {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, #ef4444 0%, #b91c1c 100%);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

.section-title.text-start::after {
    left: 0;
    transform: none;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 3rem;
}

/* Estilos para Sobre mí */
.about-content .lead {
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--secondary-color);
}

.tech-stack {
    margin-top: 2rem;
}

.tech-badges .badge {
    background-color: #ef4444 !important;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    font-weight: 500;
}

.about-image img {
    transition: var(--transition);
}

.about-image img:hover {
    transform: scale(1.05);
}

/* Timeline para experiencia */
.timeline {
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
    margin-left: -1px;
}

.timeline-item {
    position: relative;
    padding-left: 30px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 20px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 3px solid white;
    box-shadow: var(--shadow-light);
}

.timeline-item .card {
    margin-left: 0;
}

.tech-used {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

/* Animaciones */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.8s ease forwards;
}

.animate-fadeInDown {
    animation: fadeInDown 0.8s ease forwards;
}

.animate-fadeInLeft {
    animation: fadeInLeft 0.8s ease forwards;
}

.animate-fadeInRight {
    animation: fadeInRight 0.8s ease forwards;
}

/* Footer */
footer {
    background: #050505 !important;
    border-top: 1px solid var(--border-color);
    margin-top: 0 !important;
}

.social-links a {
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-links a:hover {
    color: #ef4444 !important;
    transform: translateY(-2px);
}

/* Scroll suave */
html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--navbar-height);
}

/* Lenis: cuando toma el control, debe mandar él (no el scroll-behavior nativo) */
html.lenis,
html.lenis body {
    height: auto;
}
.lenis.lenis-smooth {
    scroll-behavior: auto !important;
}
.lenis.lenis-smooth [data-lenis-prevent] {
    overscroll-behavior: contain;
}
.lenis.lenis-stopped {
    overflow: hidden;
}

/* RESPONSIVE - MÓVIL */
@media (max-width: 768px) {
    :root {
        --navbar-height: 70px;
    }
    
    body {
        padding-top: 70px;
    }
    
    .navbar {
        height: 70px !important;
        padding: 0.75rem 0 !important;
        background-color: rgba(33, 37, 41, 0.98) !important; 
    }
    
    /* Transparente al hacer scroll en móvil */
    .navbar-scrolled {
        background-color: rgba(33, 37, 41, 0.7) !important;
    }
    
    /* Volver a oscuro cuando menú abierto */
    .navbar.menu-open {
        background-color: rgba(33, 37, 41, 0.98) !important;
    }
    
    .navbar-toggler {
        margin: 0;
        padding: 0.5rem 0.7rem;
    }
    
    /* Panel del menu. La animacion vive abajo, en el bloque de 991.98px.
       Aqui habia un efecto scale propio que peleaba con ella, y sobre todo un
       "height: auto !important" en .collapsing que anulaba la animacion de
       altura de Bootstrap: el panel aparecia de golpe, a tamano completo, y
       solo despues arrancaba el fundido. Ese era el parpadeo. */
    .navbar-collapse {
        background: rgba(33, 37, 41, 0.95) !important;
        margin-top: 1rem !important;
        border-radius: 8px !important;
        padding: 1rem !important;
        border: 1px solid rgba(255, 255, 255, 0.1) !important;
    }

    .navbar-nav .nav-link {
        color: rgba(255, 255, 255, 0.9) !important;
        padding: 0.8rem 1rem !important;
        margin-bottom: 0.3rem !important;
        border-radius: 6px !important;
        transition: all 0.2s ease !important;
        text-align: center !important;
        background: none !important;
        border: none !important;
        font-size: 1rem !important;
        font-weight: 500 !important;
    }

    .navbar-nav .nav-link:hover {
        color: #ef4444 !important;
        background: rgba(239, 68, 68, 0.1) !important;
    }

    .navbar-nav .nav-link.active {
        color: #ef4444 !important;
        background: rgba(239, 68, 68, 0.15) !important;
    }

    .navbar-nav .nav-link:last-child {
        margin-bottom: 0 !important;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-padding {
        padding: 60px 0;
    }
    
    .timeline::before {
        left: 15px;
    }
    
    .timeline-item {
        padding-left: 50px;
    }
    
    .timeline-item::before {
        left: 9px;
    }
    
    .about-image {
        margin-top: 2rem;
    }
    
    .tech-badges .badge {
        font-size: 0.8rem;
        margin-bottom: 0.5rem;
    }
}

/* MÓVILES PEQUEÑOS */
@media (max-width: 576px) {
    .navbar {
        height: 70px !important;
        padding: 0.5rem 0 !important;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .section-padding {
        padding: 50px 0;
    }
}
/* ===== Scrollbar personalizada (global, todo el sitio) ===== */
html {
    scrollbar-width: thin;                 /* Firefox */
    scrollbar-color: #ef4444 #0a0a0a;      /* Firefox: thumb / track */
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: #0a0a0a;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #ef4444 0%, #b91c1c 100%);
    border-radius: 6px;
    border: 2px solid #0a0a0a;             /* deja un margen negro alrededor del thumb */
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #f87171 0%, #ef4444 100%);
}

/* ============================================================
   Menú hamburguesa: apertura y cierre
   Bootstrap solo anima la altura del .collapse, que resulta plano.
   Aqui: el icono se convierte en aspa, el panel se despliega con algo
   de perspectiva y los enlaces entran escalonados.

   Solo en movil: en escritorio el menu esta siempre desplegado.
   ============================================================ */
@media (max-width: 991.98px) {

    /* ---- Icono: tres barras que se cruzan en aspa ---------------- */
    .navbar-toggler-icon {
        background-image: none;             /* fuera el SVG de Bootstrap */
        position: relative;
        width: 1.5em;
        height: 1.5em;
        /* barra del medio */
        background: linear-gradient(rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.9))
                    center / 1.25em 2px no-repeat;
        transition: background-size 0.2s ease;
    }

    .navbar-toggler-icon::before,
    .navbar-toggler-icon::after {
        content: '';
        position: absolute;
        left: 50%;
        width: 1.25em;
        height: 2px;
        border-radius: 2px;
        background: rgba(255, 255, 255, 0.9);
        /* el translateX(-50%) va SIEMPRE primero para no descentrarlas al girar */
        transition: transform 0.32s cubic-bezier(0.2, 0.9, 0.25, 1);
    }

    .navbar-toggler-icon::before { top: calc(50% - 1px); transform: translateX(-50%) translateY(-0.42em); }
    .navbar-toggler-icon::after  { top: calc(50% - 1px); transform: translateX(-50%) translateY(0.42em); }

    /* Bootstrap ya mantiene aria-expanded al dia: no hace falta JS. */
    .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon {
        background-size: 0 2px;             /* la barra del medio se desvanece */
    }
    .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::before {
        transform: translateX(-50%) rotate(45deg);
    }
    .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::after {
        transform: translateX(-50%) rotate(-45deg);
    }

    /* ---- Panel: se despliega inclinandose desde arriba ------------ */
    .navbar-collapse {
        transform-origin: top center;
    }

    /* Bootstrap abre en dos fases: primero .collapsing (crece la altura, con el
       contenido ya pintado) y solo al final anade .show. Si el panel se ve
       durante la primera fase, al llegar .show la animacion lo devuelve a
       opacidad 0 y se ve un parpadeo. Se mantiene invisible mientras crece. */
    .navbar-collapse.collapsing {
        opacity: 0;
    }

    .navbar-collapse.show {
        animation: menuAbrir 0.3s cubic-bezier(0.2, 0.9, 0.25, 1) both;
    }

    @keyframes menuAbrir {
        from {
            opacity: 0;
            transform: perspective(700px) rotateX(-12deg) translateY(-10px);
            filter: blur(6px);
        }
        to {
            opacity: 1;
            transform: none;
            filter: none;
        }
    }

    /* Bootstrap quita .show nada mas empezar a cerrar, asi que la salida no se
       puede animar con el mismo selector: base.js marca .menu-closing.
       Al cerrar, el panel lleva .collapsing (opacidad 0): una animacion sin
       "from" explicito partiria de ahi y no se veria salir. */
    .navbar.menu-closing .navbar-collapse,
    .navbar.menu-closing .navbar-collapse.collapsing {
        animation: menuCerrar 0.22s ease-in both;
    }

    @keyframes menuCerrar {
        from {
            opacity: 1;
            transform: none;
            filter: none;
        }
        to {
            opacity: 0;
            transform: perspective(700px) rotateX(-8deg) translateY(-6px);
            filter: blur(4px);
        }
    }

    /* ---- Enlaces: entran escalonados ------------------------------ */
    .navbar-collapse.show .nav-item {
        animation: itemAbrir 0.34s cubic-bezier(0.2, 0.9, 0.25, 1) both;
    }

    .navbar-collapse.show .nav-item:nth-child(1) { animation-delay: 0.06s; }
    .navbar-collapse.show .nav-item:nth-child(2) { animation-delay: 0.12s; }
    .navbar-collapse.show .nav-item:nth-child(3) { animation-delay: 0.18s; }
    .navbar-collapse.show .nav-item:nth-child(4) { animation-delay: 0.24s; }

    @keyframes itemAbrir {
        from { opacity: 0; transform: translateY(-8px); }
        to   { opacity: 1; transform: none; }
    }
}

/* Quien pide menos movimiento, no lo recibe. */
@media (prefers-reduced-motion: reduce) {
    .navbar-collapse.show,
    .navbar-collapse.show .nav-item,
    .navbar.menu-closing .navbar-collapse {
        animation: none;
    }
    .navbar-toggler-icon,
    .navbar-toggler-icon::before,
    .navbar-toggler-icon::after {
        transition: none;
    }
}