/* ── Sidebar layout ──────────────────────────────────────────────────────── */

:root {
    --sidebar-w: 220px;
    --sidebar-collapsed-w: 58px;
    --header-h: 70px; /* overridden by JS */
}

/* Main content shifts right to clear sidebar on desktop */
@media (min-width: 768px) {
    .portal-has-sidebar .portal-main-content {
        margin-left: var(--sidebar-w);
        transition: margin-left .2s;
    }
    .portal-has-sidebar.sidebar-collapsed .portal-main-content {
        margin-left: var(--sidebar-collapsed-w);
    }
}

/* ── Sidebar ─────────────────────────────────────────────────────────────── */

.portal-sidebar {
    position: fixed;
    left: 0;
    top: var(--header-h);
    height: calc(100vh - var(--header-h));
    width: var(--sidebar-w);
    background: #fff;
    border-right: 1px solid #e9ecef;
    z-index: 9;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: width .2s, transform .2s;
}

.sidebar-collapsed .portal-sidebar {
    width: var(--sidebar-collapsed-w);
}

/* Mobile: hidden off-screen, slides in as a drawer */
@media (max-width: 767px) {
    .portal-sidebar {
        width: var(--sidebar-w) !important;
        transform: translateX(-100%);
        z-index: 200;
        box-shadow: 4px 0 16px rgba(0, 0, 0, .12);
    }
    .sidebar-mobile-open .portal-sidebar {
        transform: translateX(0);
    }
}

/* ── Mobile backdrop ─────────────────────────────────────────────────────── */

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .35);
    z-index: 199;
    animation: sidebar-backdrop-in .2s ease;
}

@keyframes sidebar-backdrop-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.sidebar-mobile-open .sidebar-overlay {
    display: block;
}

/* ── Nav items ───────────────────────────────────────────────────────────── */

.sidebar-nav {
    flex: 1;
    padding: 10px 0;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 16px;
    color: #495057;
    text-decoration: none;
    font-size: .875rem;
    font-weight: 500;
    white-space: nowrap;
    border-left: 3px solid transparent;
    transition: background .15s, color .15s;
}

.sidebar-nav-link:hover {
    background: #f8f9fa;
    color: #212529;
    text-decoration: none;
}

.sidebar-nav-link.active {
    background: #eef4ff;
    color: #0d6efd;
    border-left-color: #0d6efd;
    font-weight: 600;
}

.sidebar-nav-link i {
    font-size: 1.05rem;
    flex-shrink: 0;
    width: 22px;
    text-align: center;
}

.sidebar-nav-label {
    transition: opacity .15s;
}

.sidebar-collapsed .sidebar-nav-label {
    opacity: 0;
    pointer-events: none;
}

/* ── Collapse toggle (desktop only) ─────────────────────────────────────── */

.sidebar-footer {
    border-top: 1px solid #e9ecef;
    flex-shrink: 0;
}

.sidebar-toggle-btn {
    display: none;
    width: 100%;
    padding: 12px 16px;
    background: none;
    border: none;
    cursor: pointer;
    color: #6c757d;
    font-size: .8rem;
    align-items: center;
    gap: 10px;
    white-space: nowrap;
    overflow: hidden;
    transition: color .15s;
}

@media (min-width: 768px) {
    .sidebar-toggle-btn {
        display: flex;
    }
}

.sidebar-toggle-btn:hover {
    color: #212529;
}

.sidebar-toggle-btn .toggle-icon {
    font-size: .95rem;
    flex-shrink: 0;
    transition: transform .2s;
}

.sidebar-collapsed .sidebar-toggle-btn .toggle-icon {
    transform: rotate(180deg);
}

.sidebar-toggle-label {
    transition: opacity .15s;
}

.sidebar-collapsed .sidebar-toggle-label {
    opacity: 0;
}

/* ── Hamburger button (lives in portal header, mobile only) ──────────────── */

#sidebar-hamburger {
    display: none;
    background: none;
    border: none;
    padding: 5px 7px;
    margin-right: 4px;
    cursor: pointer;
    color: #495057;
    font-size: 1.15rem;
    line-height: 1;
    border-radius: 6px;
    flex-shrink: 0;
    transition: background .15s;
}

.portal-has-sidebar #sidebar-hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (min-width: 768px) {
    #sidebar-hamburger {
        display: none !important;
    }
}

#sidebar-hamburger:hover {
    background: rgba(0, 0, 0, .06);
}