/* ═══════════════════════════════════════════════════════════
   FUENTE DE VERDAD — VARIABLES GLOBALES
   ═══════════════════════════════════════════════════════════ */
:root {
    --bg-primary:      #04050a;
    --bg-surface:      #080b12;
    --bg-card:         #0d1120;
    --accent:          #1d4ed8;
    --accent-light:    #3b82f6;
    --accent-muted:    rgba(29, 78, 216, 0.10);
    --accent-border:   rgba(59, 130, 246, 0.30);
    --text-primary:    #f8fafc;
    --text-secondary:  #94a3b8;
    --text-muted:      #6b82a0;
    --border:          #131c2e;
    --white:           #ffffff;
    --radius-sm:       3px;
    --radius-md:       6px;
    --transition:      0.22s ease;
    --max-width:       1100px;
}

/* ═══════════════════════════════════════════════════════════
   RESET BASE
   ═══════════════════════════════════════════════════════════ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img {
    display: block;
    max-width: 100%;
}

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

ul {
    list-style: none;
}

strong {
    color: var(--white);
    font-weight: 700;
}

/* ═══════════════════════════════════════════════════════════
   NAVEGACIÓN
   ═══════════════════════════════════════════════════════════ */
.nav-principal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 1.25rem 2rem;
    transition: background var(--transition), border-color var(--transition);
    border-bottom: 1px solid transparent;
}

.nav-principal.nav-solida {
    background-color: rgba(4, 5, 10, 0.96);
    border-bottom-color: var(--border);
    backdrop-filter: blur(10px);
}

.nav-contenedor {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-marca {
    font-size: 1.2rem;
    font-weight: 900;
    color: var(--white);
    letter-spacing: -0.04em;
    transition: color var(--transition);
}

.nav-marca:hover {
    color: var(--accent-light);
}

.nav-lista {
    display: flex;
    align-items: center;
    gap: 0.1rem;
}

.nav-enlace {
    position: relative;
    font-size: 0.83rem;
    color: var(--text-secondary);
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius-sm);
    transition: color var(--transition);
    letter-spacing: 0.02em;
}

.nav-enlace::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0.85rem;
    right: 0.85rem;
    height: 1px;
    background-color: var(--accent-light);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.nav-enlace:hover {
    color: var(--white);
}

.nav-enlace:hover::after {
    transform: scaleX(1);
}

.nav-cta {
    font-size: 0.83rem;
    font-weight: 600;
    color: var(--white);
    background-color: var(--accent);
    padding: 0.45rem 1rem;
    border-radius: var(--radius-sm);
    margin-left: 0.75rem;
    transition: background var(--transition), transform var(--transition);
    letter-spacing: 0.02em;
}

.nav-cta:hover {
    background-color: var(--accent-light);
    transform: translateY(-1px);
}

/* ═══════════════════════════════════════════════════════════
   HERO  — conservado íntegro; solo min-height → height dvh
   ═══════════════════════════════════════════════════════════ */
.seccion-hero {
    height: 100dvh;
    min-height: 560px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 2rem;
    position: relative;
    isolation: isolate;
}

.seccion-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('assets/images/programming.png');
    background-size: cover;
    background-position: center;
    opacity: 0.2;
    z-index: -1;
}

.hero-contenido {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 6rem;
    align-items: center;
    width: 100%;
    animation: hero-entrar 0.9s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes hero-entrar {
    from { opacity: 0; transform: translateY(32px); }
    to   { opacity: 1; transform: translateY(0); }
}

.hero-etiqueta {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.72rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent-light);
    margin-bottom: 2rem;
    padding: 0.3rem 0.85rem;
    border: 1px solid var(--accent-border);
    border-radius: var(--radius-sm);
}

.hero-etiqueta::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--accent-light);
    flex-shrink: 0;
    animation: pulso 2.2s ease-in-out infinite;
}

@keyframes pulso {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.3; }
}

.hero-titulo {
    display: flex;
    flex-direction: column;
    font-size: clamp(3rem, 7vw, 6rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    margin-bottom: 1.25rem;
}

.hero-prefijo {
    font-size: 0.45em;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: -0.01em;
    line-height: 2;
}

.hero-nombre {
    color: var(--white);
    line-height: 1.0;
}

.hero-rol {
    font-size: 0.75rem;
    color: var(--text-secondary);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.hero-descripcion {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.85;
    max-width: 480px;
    margin-bottom: 2.75rem;
}

.hero-acciones {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ─── Foto 3×4 ──────────────────────────────────────────── */
.hero-lateral {
    flex-shrink: 0;
}

.foto-contenedor {
    position: relative;
    display: inline-block;
}

.foto-contenedor::before {
    content: '';
    position: absolute;
    top: -8px;
    left: -8px;
    width: 22px;
    height: 22px;
    border-top: 2px solid var(--accent-light);
    border-left: 2px solid var(--accent-light);
    z-index: 2;
    pointer-events: none;
}

.foto-contenedor::after {
    content: '';
    position: absolute;
    bottom: -8px;
    right: -8px;
    width: 22px;
    height: 22px;
    border-bottom: 2px solid var(--accent-light);
    border-right: 2px solid var(--accent-light);
    z-index: 2;
    pointer-events: none;
}

.marco-foto-3x4 {
    width: 240px;
    aspect-ratio: 3 / 4;
    border: 1px solid var(--accent-border);
    overflow: hidden;
    position: relative;
    background-color: var(--bg-card);
    cursor: pointer;
    transition: border-color var(--transition);
}

.marco-foto-3x4:hover {
    border-color: rgba(59, 130, 246, 0.6);
}

.foto-perfil {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.marco-foto-3x4:hover .foto-perfil {
    transform: scale(1.03);
}

.foto-placeholder {
    position: absolute;
    inset: 0;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    cursor: pointer;
    background-color: var(--bg-card);
    transition: background var(--transition);
}

.foto-placeholder:hover {
    background-color: var(--bg-surface);
}

.foto-placeholder-icono {
    font-size: 2rem;
    font-weight: 200;
    color: var(--accent-light);
    line-height: 1;
    border: 1px solid var(--accent-border);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

.foto-placeholder span {
    font-size: 0.85rem;
    color: var(--text-secondary);
    letter-spacing: 0.2em;
    font-weight: 600;
}

.foto-placeholder small {
    font-size: 0.68rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

.foto-input-oculto {
    display: none;
}

/* ─── Scroll indicator ──────────────────────────────────── */
.hero-scroll {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.7rem;
    color: var(--text-muted);
    font-size: 0.62rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    user-select: none;
}

.hero-scroll span {
    font-size: 1rem;
}

.scroll-linea {
    width: 1px;
    height: 52px;
    background-color: var(--border);
    position: relative;
    overflow: hidden;
}

.scroll-linea::after {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--accent-light);
    animation: bajar-linea 2.2s ease-in-out infinite;
}

@keyframes bajar-linea {
    0%   { top: -100%; }
    100% { top: 110%; }
}

/* ═══════════════════════════════════════════════════════════
   BOTONES GLOBALES
   ═══════════════════════════════════════════════════════════ */
.btn-primario {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    background-color: var(--accent);
    color: var(--white);
    font-size: 0.88rem;
    font-weight: 700;
    border-radius: var(--radius-sm);
    transition: background var(--transition), transform var(--transition);
    letter-spacing: 0.03em;
}

.btn-primario:hover {
    background-color: var(--accent-light);
    transform: translateY(-2px);
}

.btn-ghost {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    color: var(--text-secondary);
    font-size: 0.88rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: color var(--transition), border-color var(--transition), transform var(--transition);
    letter-spacing: 0.03em;
}

.btn-ghost:hover {
    color: var(--white);
    border-color: var(--accent-border);
    transform: translateY(-2px);
}

/* ═══════════════════════════════════════════════════════════
   SECCIONES — LAYOUT GENERAL
   ═══════════════════════════════════════════════════════════ */
.seccion {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 7rem 2rem;
}

/* ─── Reveal on scroll ──────────────────────────────────── */
.revelar {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.65s ease, transform 0.65s ease;
}

.revelar.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ─── Cabecera de sección ───────────────────────────────── */
.seccion-cabecera {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    padding-bottom: 2rem;
    margin-bottom: 4rem;
    border-bottom: 1px solid var(--border);
}

.seccion-numero {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.seccion-titulo {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.04em;
}

/* ─── Texto descriptivo ─────────────────────────────────── */
.descripcion {
    max-width: 700px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 1rem;
    font-size: 1.05rem;
}

/* ═══════════════════════════════════════════════════════════
   HABILIDADES — fila etiqueta + pills
   ═══════════════════════════════════════════════════════════ */
.contenedor-habilidades {
    display: flex;
    flex-direction: column;
}

.bloque-habilidad {
    display: grid;
    grid-template-columns: 140px 1fr;
    align-items: center;
    gap: 1.5rem;
    padding: 1.75rem 0;
    border-bottom: 1px solid var(--border);
}

.bloque-habilidad:first-child {
    padding-top: 0;
}

.bloque-habilidad:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.grupo-titulo {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.grid-habilidades {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.tarjeta-habilidad {
    display: inline-flex;
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 1rem;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    min-width: unset;
    transition: color var(--transition), border-color var(--transition);
    cursor: default;
}

.tarjeta-habilidad:hover {
    border-color: var(--accent-border);
    color: var(--white);
    transform: none;
}

.habilidad-icono {
    height: 18px;
    width: auto;
    object-fit: contain;
    filter: brightness(0.85);
    transition: filter var(--transition);
}

.habilidad-icono--png {
    height: 18px;
    width: auto;
    max-width: 64px;
    object-fit: contain;
    object-position: center center;
}

.tarjeta-habilidad:hover .habilidad-icono {
    filter: brightness(1);
}

/* ═══════════════════════════════════════════════════════════
   FORMACIÓN — lista limpia
   ═══════════════════════════════════════════════════════════ */
.contenedor-formacion {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.bloque-formacion {
    display: flex;
    flex-direction: column;
}

.item-formacion {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border);
}

.item-formacion:first-of-type {
    padding-top: 0;
}

.item-formacion:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.formacion-periodo {
    display: block;
    font-size: 0.7rem;
    color: var(--text-secondary);
    letter-spacing: 0.08em;
    margin-bottom: 0.5rem;
}

.formacion-titulo {
    font-size: 0.97rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
    line-height: 1.4;
}

.formacion-institucion {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.btn-enlace {
    display: inline-flex;
    align-items: center;
    font-size: 0.78rem;
    color: var(--accent-light);
    letter-spacing: 0.02em;
    transition: color var(--transition);
}

.btn-enlace:hover {
    color: var(--white);
}

.btn-enlace.deshabilitado {
    color: var(--text-secondary);
    cursor: default;
    pointer-events: none;
    opacity: 0.5;
}

/* ═══════════════════════════════════════════════════════════
   PROYECTOS
   ═══════════════════════════════════════════════════════════ */
.contenedor-proyectos {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.bloque-proyectos {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

.grid-proyectos {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.tarjeta-proyecto {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
    transition: border-color var(--transition);
}

/* Línea de acento inferior animada */
.tarjeta-proyecto::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.tarjeta-proyecto:hover {
    border-color: var(--accent-border);
}

.tarjeta-proyecto:hover::after {
    transform: scaleX(1);
}

.proyecto-imagen {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background-color: var(--bg-surface);
    flex-shrink: 0;
}

.proyecto-imagen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.88) saturate(0.85);
    transition: transform 0.5s ease, filter 0.4s ease;
}

.tarjeta-proyecto:hover .proyecto-imagen img {
    transform: scale(1.05);
    filter: brightness(1) saturate(1);
}

.proyecto-info {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    flex: 1;
}

.proyecto-nombre {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: 1.3;
}

.proyecto-acciones {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    margin-top: auto;
}

.btn-repo {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius-sm);
    transition: color var(--transition), border-color var(--transition);
}

.btn-repo:hover {
    color: var(--white);
    border-color: var(--accent-border);
}

.icono-repo {
    width: 14px;
    height: 14px;
    filter: invert(0.5);
    transition: filter var(--transition);
}

.btn-repo:hover .icono-repo {
    filter: invert(0.9);
}

.btn-proyecto {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--accent-light);
    padding: 0.4rem 0;
    transition: color var(--transition);
}

.btn-proyecto:hover {
    color: var(--white);
}

.sin-contenido {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-style: italic;
    padding: 0.5rem 0;
}

/* ═══════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════ */
footer {
    margin-top: 0;
    border-top: 1px solid var(--border);
}

.footer-contenedor {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 6rem 2rem 3rem;
}

.footer-superior {
    margin-bottom: 4rem;
}

.footer-titulo {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.05em;
    line-height: 1;
    margin-bottom: 1rem;
}

.footer-titulo span {
    color: var(--accent-light);
}

.footer-subtitulo {
    font-size: 0.92rem;
    color: var(--text-muted);
}

.footer-contacto {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-bottom: 5rem;
    border-top: 1px solid var(--border);
}

.contacto-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: color var(--transition);
}

.contacto-item:hover {
    color: var(--white);
}

.contacto-icono {
    width: 18px;
    height: 18px;
    filter: invert(0.5);
    flex-shrink: 0;
    transition: filter var(--transition);
}

.contacto-item:hover .contacto-icono {
    filter: invert(0.9);
}

.footer-inferior {
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
}

.footer-copyright {
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 0.03em;
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
    .hero-contenido {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero-texto  { order: 2; }
    .hero-lateral {
        order: 1;
        display: flex;
        justify-content: center;
    }

    .hero-descripcion {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-acciones { justify-content: center; }
    .hero-etiqueta { display: inline-flex; }

    .contenedor-formacion {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .grid-proyectos {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .nav-lista { gap: 0; }

    .nav-enlace {
        padding: 0.4rem 0.55rem;
        font-size: 0.77rem;
    }

    .bloque-habilidad {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
}

@media (max-width: 600px) {
    .seccion {
        padding: 5rem 1.25rem;
    }

    .seccion-hero {
        padding: 0 1.25rem;
    }

    .hero-contenido { gap: 2rem; }

    .marco-foto-3x4 { width: 180px; }

    .nav-principal { padding: 1rem 1.25rem; }

    .footer-contenedor { padding: 4rem 1.25rem 2.5rem; }
}