/* Layout global: topbar superior + sidebar izquierdo colapsable.
   Reemplaza el navbar horizontal original. Usa var(--drako-theme), inyectada
   por ThemeService en el <style> inline del <head>, para el color de acento. */

:root {
    --sidebar-w: 236px;
    --sidebar-rail: 58px;
    --topbar-h: 56px;
}

/* ===== Topbar ===== */
.app-topbar {
    position: sticky;
    top: 0;
    z-index: 1030;
    height: var(--topbar-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0 1rem;
    background: #fff;
    border-bottom: 1px solid #dee2e6;
    box-shadow: 0 .125rem .25rem rgba(0, 0, 0, .04);
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: .75rem;
    min-width: 0;
}

.sidebar-toggle-btn {
    background: none;
    border: none;
    color: #495057;
    font-size: 1.1rem;
    line-height: 1;
    padding: .4rem .55rem;
    border-radius: 6px;
    cursor: pointer;
}

.sidebar-toggle-btn:hover {
    background: #f1f3f5;
    color: var(--drako-theme, #dc3545);
}

.app-topbar .brand {
    font-weight: 700;
    color: #212529;
    text-decoration: none;
    white-space: nowrap;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: .25rem;
    flex-wrap: nowrap;
}

.topbar-link {
    display: flex;
    align-items: center;
    gap: .4rem;
    padding: .4rem .6rem;
    border-radius: 6px;
    color: #495057;
    text-decoration: none;
    font-size: .85rem;
    white-space: nowrap;
    background: none;
    border: none;
}

.topbar-link:hover {
    background: #f1f3f5;
    color: #212529;
}

.topbar-link-strong {
    color: var(--drako-theme, #dc3545);
    font-weight: 600;
}

.topbar-logout-form {
    display: inline-flex;
}

.topbar-logout-btn {
    cursor: pointer;
}

.topbar-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #e9ecef;
    color: #6c757d;
    font-size: .7rem;
    flex: none;
}

/* ===== Shell (sidebar + contenido) ===== */
.app-shell {
    display: flex;
    align-items: stretch;
    min-height: calc(100vh - var(--topbar-h));
}

.app-sidebar {
    width: var(--sidebar-w);
    flex: 0 0 var(--sidebar-w);
    background: #f7f8fa;
    border-right: 1px solid #dee2e6;
    padding: .75rem .5rem 1.5rem;
    overflow-x: hidden;
    overflow-y: auto;
    position: sticky;
    top: var(--topbar-h);
    height: calc(100vh - var(--topbar-h));
    transition: width .18s ease, flex-basis .18s ease;
}

.app-main {
    flex: 1 1 auto;
    min-width: 0;
}

.side-link,
.side-group-toggle {
    display: flex;
    align-items: center;
    gap: .65rem;
    width: 100%;
    padding: .5rem .65rem;
    margin-bottom: .1rem;
    border-radius: 6px;
    color: #212529;
    text-decoration: none;
    font-size: .87rem;
    white-space: nowrap;
    background: none;
    border: none;
    text-align: left;
}

.side-link:hover,
.side-group-toggle:hover {
    background: #e9ecef;
    color: #212529;
}

.side-link.active {
    background: rgba(0, 0, 0, .05);
    color: var(--drako-theme, #dc3545);
    font-weight: 600;
    border-left: 3px solid var(--drako-theme, #dc3545);
    padding-left: calc(.65rem - 3px);
}

.side-icon {
    width: 18px;
    flex: none;
    text-align: center;
    color: #6c757d;
    font-size: .85rem;
}

.side-link.active .side-icon {
    color: var(--drako-theme, #dc3545);
}

.side-group-toggle {
    font-weight: 600;
    color: #495057;
    cursor: pointer;
}

.side-chevron {
    margin-left: auto;
    font-size: .65rem;
    color: #adb5bd;
    transition: transform .15s ease;
    flex: none;
}

.side-group-toggle[aria-expanded="true"] .side-chevron {
    transform: rotate(90deg);
}

.side-group-body {
    padding-left: 1.55rem;
    border-left: 1px solid #dee2e6;
    margin: .1rem 0 .35rem .9rem;
}

.side-group-body .side-link {
    font-size: .83rem;
    padding: .42rem .55rem;
    color: #495057;
}

.side-group-body .side-link.active {
    color: var(--drako-theme, #dc3545);
}

.sidebar-divider {
    height: 1px;
    background: #dee2e6;
    margin: .5rem .3rem;
}

.sidebar-backdrop {
    display: none;
}

/* ===== Modo recogido (rail de íconos) — solo desktop ===== */
@media (min-width: 768px) {
    body.sidebar-collapsed .app-sidebar {
        width: var(--sidebar-rail);
        flex-basis: var(--sidebar-rail);
    }

    body.sidebar-collapsed .side-label,
    body.sidebar-collapsed .side-chevron,
    body.sidebar-collapsed .sidebar-divider,
    body.sidebar-collapsed .side-group-body {
        display: none;
    }

    body.sidebar-collapsed .side-link,
    body.sidebar-collapsed .side-group-toggle {
        justify-content: center;
        padding-left: 0;
        padding-right: 0;
    }

    body.sidebar-collapsed .side-link.active {
        border-left: none;
        border-radius: 6px;
        background: rgba(0, 0, 0, .06);
    }
}

/* ===== Mobile: sidebar como drawer off-canvas ===== */
@media (max-width: 767.98px) {
    .app-sidebar {
        position: fixed;
        left: 0;
        top: var(--topbar-h);
        height: calc(100vh - var(--topbar-h));
        width: var(--sidebar-w) !important;
        flex-basis: var(--sidebar-w) !important;
        transform: translateX(-105%);
        z-index: 1045;
        box-shadow: 2px 0 10px rgba(0, 0, 0, .15);
        transition: transform .2s ease;
    }

    body.sidebar-mobile-open .app-sidebar {
        transform: translateX(0);
    }

    .app-main {
        width: 100%;
    }

    .sidebar-backdrop {
        position: fixed;
        inset: var(--topbar-h) 0 0 0;
        background: rgba(0, 0, 0, .35);
        z-index: 1040;
    }

    body.sidebar-mobile-open .sidebar-backdrop {
        display: block;
    }

    .topbar-link-label {
        display: none;
    }
}
