/* nav.css — Menú lateral unificado del panel DebugIA.
   Se activa solo cuando nav.js agrega `app-nav-ready` al <html>, así ninguna
   página que no incluya el menú se ve afectada. */

:root {
    --app-nav-w: 250px;
    --app-nav-w-mini: 68px;
    --app-nav-bg: #102a43;
    --app-nav-bg-hover: #17395c;
    --app-nav-bg-active: #1f4e79;
    --app-nav-fg: #cbd7e4;
    --app-nav-fg-soft: #8fa6bd;
    --app-nav-accent: #4da3ff;
    --app-nav-border: rgba(255, 255, 255, .09);
}

html.app-nav-collapsed {
    --app-nav-w: var(--app-nav-w-mini);
}

/* El contenido se desplaza para dejar sitio al menú. */
html.app-nav-ready body {
    padding-left: var(--app-nav-w);
    transition: padding-left .18s ease;
}

.app-nav {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--app-nav-w);
    background: var(--app-nav-bg);
    color: var(--app-nav-fg);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--app-nav-border);
    z-index: 1100;
    transition: width .18s ease;
}

/* ── Marca ─────────────────────────────────────────────────────────────── */
.app-nav__brand {
    display: flex;
    align-items: center;
    gap: .7rem;
    padding: 1rem 1.1rem;
    min-height: 64px;
    border-bottom: 1px solid var(--app-nav-border);
}

.app-nav__brand > i {
    color: var(--app-nav-accent);
    font-size: 1.35rem;
    flex: 0 0 auto;
}

.app-nav__brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
    min-width: 0;
}

.app-nav__brand-text strong {
    color: #fff;
    font-size: .98rem;
}

.app-nav__brand-text span {
    font-size: .7rem;
    color: var(--app-nav-fg-soft);
    white-space: nowrap;
}

/* ── Botón de colapso ──────────────────────────────────────────────────── */
.app-nav__toggle {
    position: absolute;
    top: 20px;
    right: -13px;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: #fff;
    color: var(--app-nav-bg);
    border: 1px solid #cfd9e4;
    box-shadow: 0 1px 4px rgba(0, 0, 0, .18);
    cursor: pointer;
    display: grid;
    place-items: center;
    font-size: .7rem;
    z-index: 2;
}

.app-nav__toggle:hover {
    background: #eef4fa;
}

html.app-nav-collapsed .app-nav__toggle i {
    transform: rotate(180deg);
}

/* ── Enlaces ───────────────────────────────────────────────────────────── */
.app-nav__links {
    flex: 1 1 auto;
    overflow-y: auto;
    overflow-x: hidden;
    padding: .4rem 0 .8rem;
}

.app-nav__group {
    padding: .9rem 1.1rem .35rem;
    font-size: .66rem;
    font-weight: 700;
    letter-spacing: .09em;
    text-transform: uppercase;
    color: var(--app-nav-fg-soft);
    white-space: nowrap;
}

.app-nav__link {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .62rem 1.1rem;
    color: var(--app-nav-fg);
    font-size: .9rem;
    text-decoration: none;
    border-left: 3px solid transparent;
    white-space: nowrap;
    cursor: pointer;
}

.app-nav__link:hover {
    background: var(--app-nav-bg-hover);
    color: #fff;
}

.app-nav__link.is-active {
    background: var(--app-nav-bg-active);
    color: #fff;
    border-left-color: var(--app-nav-accent);
    font-weight: 500;
}

.app-nav__link > i {
    width: 1.15rem;
    text-align: center;
    font-size: .98rem;
    flex: 0 0 auto;
}

.app-nav__label {
    flex: 1 1 auto;
    overflow: hidden;
    text-overflow: ellipsis;
}

.app-nav__badge {
    flex: 0 0 auto;
    font-size: .62rem;
    font-weight: 700;
    background: rgba(77, 163, 255, .18);
    color: var(--app-nav-accent);
    padding: .12rem .35rem;
    border-radius: 4px;
}

.app-nav__link.is-disabled {
    opacity: .4;
    cursor: not-allowed;
}

.app-nav__link.is-disabled:hover {
    background: transparent;
    color: var(--app-nav-fg);
}

/* ── Pie: usuario + salir ──────────────────────────────────────────────── */
.app-nav__footer {
    display: flex;
    align-items: center;
    gap: .6rem;
    padding: .7rem .8rem;
    border-top: 1px solid var(--app-nav-border);
}

.app-nav__avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--app-nav-bg-active);
    color: #fff;
    display: grid;
    place-items: center;
    font-size: .8rem;
    font-weight: 700;
    flex: 0 0 auto;
}

.app-nav__user-info {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
    min-width: 0;
    flex: 1 1 auto;
}

.app-nav__user-info strong {
    color: #fff;
    font-size: .82rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.app-nav__user-info span {
    font-size: .7rem;
    color: var(--app-nav-fg-soft);
}

.app-nav__icon-btn {
    background: transparent;
    border: 0;
    color: var(--app-nav-fg);
    width: 32px;
    height: 32px;
    border-radius: 8px;
    cursor: pointer;
    flex: 0 0 auto;
    font-size: .95rem;
}

.app-nav__icon-btn:hover {
    background: var(--app-nav-bg-hover);
    color: #fff;
}

/* ── Estado mini (contraído o pantalla angosta) ────────────────────────── */
html.app-nav-collapsed .app-nav__brand,
html.app-nav-collapsed .app-nav__link,
html.app-nav-collapsed .app-nav__footer {
    justify-content: center;
    padding-left: 0;
    padding-right: 0;
}

html.app-nav-collapsed .app-nav__brand-text,
html.app-nav-collapsed .app-nav__label,
html.app-nav-collapsed .app-nav__badge,
html.app-nav-collapsed .app-nav__user-info {
    display: none;
}

/* El título de sección se convierte en una línea divisoria. */
html.app-nav-collapsed .app-nav__group {
    height: 1px;
    padding: 0;
    margin: .55rem 1rem;
    background: var(--app-nav-border);
    color: transparent;
    overflow: hidden;
    font-size: 0;
}

@media (max-width: 900px) {
    :root {
        --app-nav-w: var(--app-nav-w-mini);
    }

    .app-nav__toggle {
        display: none;
    }

    .app-nav__brand,
    .app-nav__link,
    .app-nav__footer {
        justify-content: center;
        padding-left: 0;
        padding-right: 0;
    }

    .app-nav__brand-text,
    .app-nav__label,
    .app-nav__badge,
    .app-nav__user-info {
        display: none;
    }

    .app-nav__group {
        height: 1px;
        padding: 0;
        margin: .55rem 1rem;
        background: var(--app-nav-border);
        color: transparent;
        overflow: hidden;
        font-size: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    html.app-nav-ready body,
    .app-nav {
        transition: none;
    }
}
