/* =================================================================
   FUNDACIÓN ZAFFARONI - COMPONENTE lomo
   Barra lateral izquierda con navegación vertical
   ================================================================= */

/* ===== ESTRUCTURA PRINCIPAL ===== */
.lomo {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    width: var(--ancho-lomo);
    height: 100vh;
    height: 100dvh;
    padding: var(--espacio-6) var(--espacio-4);
    background-color: var(--color-fondo);
    border-right: var(--grosor-linea) solid var(--color-linea);
    z-index: var(--z-header);
    transition: width var(--transicion-empuje);
}

/* ===== SECCIÓN SUPERIOR ===== */
.lomo__superior {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--espacio-4);
}

/* Botón hamburguesa */
.lomo__hamburguesa {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 6px;
    width: 32px;
    height: 32px;
    padding: 4px 0;
     
    background: transparent;
    border: none;
    transition: all var(--transicion-normal);
}

.lomo__hamburguesa-linea {
    width: 100%;
    height: 2px;
    background-color: var(--color-principal);
    transition: all var(--transicion-normal);
}

.lomo__hamburguesa-linea:nth-child(2) {
    width: 70%;
}

.lomo__hamburguesa:hover .lomo__hamburguesa-linea {
    background-color: var(--color-secundario);
}

.lomo__hamburguesa:hover .lomo__hamburguesa-linea:nth-child(2) {
    width: 100%;
}

/* Estado activo del hamburguesa */
.lomo.menu-abierto .lomo__hamburguesa-linea:nth-child(1) {
    transform: rotate(45deg) translateY(8px);
}

.lomo.menu-abierto .lomo__hamburguesa-linea:nth-child(2) {
    opacity: 0;
    width: 0;
}

.lomo.menu-abierto .lomo__hamburguesa-linea:nth-child(3) {
    transform: rotate(-45deg) translateY(-8px);
}

/* ===== SECCIÓN CENTRAL - TÍTULO VERTICAL ===== */
.lomo__centro {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.lomo__titulo-vertical {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    transform: rotate(180deg);
    font-family: var(--fuente-display);
    font-size: var(--texto-lg);
    font-weight: var(--peso-regular);
    font-style: italic;
    font-variation-settings: "ital" 1, "wght" 400;
    letter-spacing: var(--tracking-wider);
    color: var(--color-principal);
    white-space: nowrap;
    user-select: none;
    cursor: default;
}

/* ===== SECCIÓN INFERIOR - QUIPU ===== */
.lomo__inferior {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lomo__quipu {
    width: 48px;
    height: auto;
    transition: transform var(--transicion-normal);
}

.lomo__quipu:hover {
    transform: scale(1.05);
}

/* ===== MENÚ DESPLEGABLE ===== */
.lomo__menu {
    position: fixed;
    top: 0;
    left: var(--ancho-lomo);
    width: var(--ancho-lomo-expandido);
    height: 100vh;
    height: 100dvh;
    background-color: var(--color-fondo);
    border-right: var(--grosor-linea) solid var(--color-linea);
    transform: translateX(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transicion-empuje);
    z-index: calc(var(--z-header) - 1);
    overflow-y: auto;
    padding: var(--espacio-8) var(--espacio-6);
}

.lomo.menu-abierto .lomo__menu {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
}

/* Items del menú */
.lomo__menu-lista {
    list-style: none;
    padding: 0;
    margin: 0;
}

.lomo__menu-item {
    border-bottom: var(--grosor-linea) solid var(--color-linea-suave);
}

.lomo__menu-item:last-child {
    border-bottom: none;
}

.lomo__menu-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--espacio-4) 0;
    font-family: var(--fuente-display);
    font-size: var(--texto-lg);
    color: var(--color-principal);
    text-decoration: none;
    transition: all var(--transicion-normal);
}

.lomo__menu-link:hover {
    color: var(--color-secundario);
    padding-left: var(--espacio-2);
}

.lomo__menu-link-icono {
    font-size: var(--texto-base);
    opacity: 0;
    transform: translateX(-8px);
    transition: all var(--transicion-normal);
}

.lomo__menu-link:hover .lomo__menu-link-icono {
    opacity: 1;
    transform: translateX(0);
}

/* ===== OVERLAY CUANDO MENÚ ESTÁ ABIERTO ===== */
.lomo__overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transicion-normal);
    z-index: calc(var(--z-header) - 2);
}

.lomo.menu-abierto ~ .lomo__overlay,
.lomo.menu-abierto + .lomo__overlay {
    opacity: 1;
    visibility: visible;
}

/* ===== RESPONSIVE ===== */
@media screen and (max-width: 40em) {
    .lomo {
        width: 100%;
        height: auto;
        flex-direction: row;
        padding: var(--espacio-4);
        border-right: none;
        border-bottom: var(--grosor-linea) solid var(--color-linea);
    }
    
    .lomo__centro {
        position: relative;
        top: auto;
        left: auto;
        transform: none;
    }
    
    .lomo__titulo-vertical {
        writing-mode: horizontal-tb;
        transform: none;

        font-size: var(--texto-base);
    }
    
    .lomo__menu {
        left: 0;
        top: auto;
        width: 100%;
        height: auto;
        max-height: 70vh;
    }
    
    .lomo__quipu {
        width: 36px;
    }
}