/* =============================================================================
   SABORA NAVIGATION SYSTEM 2.0 · MENÚ LATERAL MODERNO & ULTRA RESPONSIVE
   - Rail colapsado fijo (72px)
   - Expansión fluida en hover (260px)
   - Backdrop con efecto Blur y oscurecimiento en el resto de la pantalla
   - Icono y marca Sabora perfectamente integrados y visibles
   ============================================================================= */

.sb-nav {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    height: 100vh;
    width: 72px;
    z-index: var(--sb-z-nav);
    display: flex;
    transition: width 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.sb-nav:hover,
.sb-nav.is-expanded,
.sb-nav.is-mobile-open {
    width: 260px;
    z-index: var(--sb-z-drawer);
}

.sb-nav-panel {
    display: flex;
    flex-direction: column;
    width: 72px;
    height: 100vh;
    background: var(--sb-neutral-0);
    border-right: 1px solid var(--sb-neutral-150);
    box-shadow: 2px 0 16px rgba(15, 23, 42, 0.04);
    overflow-x: hidden;
    overflow-y: auto;
    transition: width 0.22s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.22s ease;
    user-select: none;
}

.sb-nav:hover .sb-nav-panel,
.sb-nav.is-expanded .sb-nav-panel {
    width: 260px;
    box-shadow: 4px 0 30px rgba(15, 23, 42, 0.18);
}

.sb-nav-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    min-height: 64px;
    background: var(--sb-neutral-0);
    border-bottom: 1px solid var(--sb-neutral-100);
    position: sticky;
    top: 0;
    z-index: var(--sb-z-raised);
    box-sizing: border-box;
    transition: padding 0.22s ease;
}

.sb-nav:not(:hover):not(.is-expanded) .sb-nav-head {
    justify-content: center;
    padding: 12px 0;
}

.sb-nav:not(:hover):not(.is-expanded) .sb-nav-brand {
    justify-content: center;
    gap: 0;
    width: 100%;
}

.sb-nav:not(:hover):not(.is-expanded) .sb-nav-toggle-btn {
    display: none;
}

.sb-nav:not(:hover):not(.is-expanded) .sb-nav-foot .sb-nav-user {
    justify-content: center;
    padding: 8px 0;
}

.sb-nav:not(:hover):not(.is-expanded) .sb-nav-foot .sb-iconbtn {
    display: none;
}

.sb-nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    overflow: hidden;
    cursor: pointer;
}

.sb-nav-logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--sb-brand-surface);
    border: 1px solid rgba(200, 40, 0, 0.18);
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 40px;
    box-shadow: 0 2px 8px rgba(200, 40, 0, 0.12);
    transition: transform 0.15s ease;
}

.sb-nav-logo-icon img {
    width: 26px;
    height: 26px;
    object-fit: contain;
}

.sb-nav-brand:hover .sb-nav-logo-icon {
    transform: scale(1.05);
}

.sb-nav-title {
    font-family: var(--sb-font);
    font-size: 1.2rem;
    font-weight: 900;
    color: var(--sb-neutral-900);
    letter-spacing: -0.4px;
    white-space: nowrap;
    opacity: 0;
    width: 0;
    overflow: hidden;
    transition: opacity 0.18s ease, width 0.18s ease;
}

.sb-nav:hover .sb-nav-title,
.sb-nav.is-expanded .sb-nav-title {
    opacity: 1;
    width: auto;
}

.sb-nav-toggle-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid var(--sb-neutral-200);
    background: var(--sb-neutral-50);
    color: var(--sb-neutral-500);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s ease;
    opacity: 0;
    pointer-events: none;
}

.sb-nav:hover .sb-nav-toggle-btn,
.sb-nav.is-expanded .sb-nav-toggle-btn {
    opacity: 1;
    pointer-events: auto;
}

.sb-nav-toggle-btn:hover {
    background: var(--sb-neutral-200);
    color: var(--sb-neutral-900);
}

/* -------------------------------------------------------- Items & Links --- */
.sb-nav-items {
    flex: 1;
    padding: 12px 10px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow-y: auto;
    overflow-x: hidden;
}

.sb-nav-section-sep {
    height: 1px;
    margin: 8px 10px;
    background: var(--sb-neutral-150);
    flex: 0 0 auto;
}

.sb-nav-link {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
    min-height: 44px;
    padding: 0 14px;
    border-radius: 12px;
    border: none;
    background: transparent;
    color: var(--sb-neutral-600);
    text-decoration: none;
    font-family: var(--sb-font);
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.sb-nav-link:hover {
    background: var(--sb-neutral-50);
    color: var(--sb-neutral-900);
}

.sb-nav-icon-box {
    position: relative;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 24px;
    font-size: 1.1rem;
    color: var(--sb-neutral-500);
    transition: color 0.15s ease;
}

.sb-nav-link:hover .sb-nav-icon-box {
    color: var(--sb-brand);
}

.sb-nav-text {
    flex: 1;
    margin-left: 14px;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    opacity: 0;
    width: 0;
    transition: opacity 0.18s ease, width 0.18s ease;
}

.sb-nav:hover .sb-nav-text,
.sb-nav.is-expanded .sb-nav-text {
    opacity: 1;
    width: auto;
}

/* Badge de conteo */
.sb-nav-badge {
    background: var(--sb-brand);
    color: var(--sb-neutral-0);
    font-size: 0.72rem;
    font-weight: 800;
    padding: 2px 7px;
    border-radius: 999px;
    margin-left: auto;
    opacity: 0;
    transition: opacity 0.15s ease;
}

.sb-nav:hover .sb-nav-badge,
.sb-nav.is-expanded .sb-nav-badge {
    opacity: 1;
}

/* Punto de notificación cuando está colapsado */
.sb-nav-dot {
    position: absolute;
    top: 0;
    right: 0;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--sb-brand);
    border: 2px solid var(--sb-neutral-0);
}

.sb-nav:hover .sb-nav-dot,
.sb-nav.is-expanded .sb-nav-dot {
    display: none;
}

/* Flecha de submenú */
.sb-nav-arrow {
    margin-left: 8px;
    font-size: 0.72rem;
    color: var(--sb-neutral-400);
    transition: transform 0.2s ease, opacity 0.15s ease;
    opacity: 0;
}

.sb-nav:hover .sb-nav-arrow,
.sb-nav.is-expanded .sb-nav-arrow {
    opacity: 1;
}

.sb-nav-group.is-open > .sb-nav-link .sb-nav-arrow {
    transform: rotate(180deg);
}

/* ------------------------------------------------------- Estado Activo --- */
.sb-nav-link.is-current {
    background: var(--sb-brand-surface);
    color: var(--sb-brand);
    font-weight: 800;
}

.sb-nav-link.is-current .sb-nav-icon-box {
    color: var(--sb-brand);
}

.sb-nav-link.is-current::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    bottom: 10px;
    width: 3.5px;
    border-radius: 0 4px 4px 0;
    background: var(--sb-brand);
}

/* ---------------------------------------------------- Submenús Anidados --- */
.sb-nav-children {
    display: none;
    flex-direction: column;
    gap: 2px;
    padding: 4px 0 4px 20px;
    margin-left: 18px;
    border-left: 2px solid var(--sb-neutral-100);
}

.sb-nav.is-expanded .sb-nav-group.is-open .sb-nav-children,
.sb-nav:hover .sb-nav-group.is-open .sb-nav-children {
    display: flex;
}

.sb-nav-children .sb-nav-link {
    min-height: 38px;
    font-size: 0.85rem;
    padding: 0 10px;
    color: var(--sb-neutral-500);
}

.sb-nav-children .sb-nav-link:hover {
    color: var(--sb-neutral-900);
}

.sb-nav-children .sb-nav-link.is-current {
    color: var(--sb-brand);
    background: var(--sb-brand-surface);
}

.sb-nav-children .sb-nav-link.is-current::before {
    display: none;
}

/* --------------------------------------------------- Footer de Usuario --- */
.sb-nav-foot {
    padding: 12px 10px;
    background: var(--sb-neutral-0);
    border-top: 1px solid var(--sb-neutral-100);
    position: sticky;
    bottom: 0;
    z-index: var(--sb-z-raised);
}

.sb-nav-user {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px;
    border-radius: 12px;
    transition: background 0.15s ease;
    cursor: pointer;
}

.sb-nav-user:hover {
    background: var(--sb-neutral-50);
}

.sb-nav-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--sb-brand), var(--sb-brand-accent));
    color: var(--sb-neutral-0);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.85rem;
    flex: 0 0 36px;
}

.sb-nav-user-info {
    flex: 1;
    overflow: hidden;
    opacity: 0;
    width: 0;
    transition: opacity 0.15s ease, width 0.15s ease;
}

.sb-nav:hover .sb-nav-user-info,
.sb-nav.is-expanded .sb-nav-user-info {
    opacity: 1;
    width: auto;
}

.sb-nav-user-name {
    font-weight: 800;
    font-size: 0.88rem;
    color: var(--sb-neutral-900);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sb-nav-user-role {
    font-size: 0.72rem;
    color: var(--sb-neutral-400);
}

/* ---------------------------------------------------- Tooltip Flyout Desactivado (los items ya tienen texto) --- */
.sb-nav .sb-nav-link::after,
.sb-nav .sb-nav-link::before,
.sb-nav .sb-nav-user::after,
.sb-nav .sb-nav-user::before {
    display: none !important;
}

/* ---------------------------------------------------- Blur Backdrop --- */
/* Cuando el menú entra en hover o está abierto, se muestra el overlay oscuro con blur */
.sb-nav-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: var(--sb-z-backdrop);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.sb-nav-backdrop.is-visible,
.sb-nav:hover ~ .sb-nav-backdrop,
.sb-nav.is-expanded ~ .sb-nav-backdrop,
.sb-nav.is-mobile-open ~ .sb-nav-backdrop {
    opacity: 1;
    pointer-events: auto;
}

/* -------------------------------------------------------- Responsive --- */
@media (max-width: 1024px) {
    .sb-nav {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        height: 100vh;
        width: 270px !important;
        transform: translateX(-100%);
        transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: var(--sb-z-drawer);
    }

    .sb-nav.is-mobile-open {
        transform: translateX(0);
    }

    .sb-nav-panel {
        width: 270px !important;
        border-radius: 0 20px 20px 0;
    }

    .sb-nav-title, .sb-nav-text, .sb-nav-arrow, .sb-nav-badge, .sb-nav-user-info {
        opacity: 1 !important;
        width: auto !important;
        height: auto !important;
    }
}