:root { --sidebar-width: 276px; }

.sidebar {
    width: var(--sidebar-width);
    padding: 22px 12px 14px;
    background: #073d4b;
    border-right: 1px solid rgba(255,255,255,.12);
    color: #f5fbfc;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,.18) transparent;
}
.sidebar .brand-row { padding: 0 8px 18px; }
.sidebar .brand-copy strong { color: #ffffff; font-size: 17px; }
.sidebar .brand-copy small { color: rgba(233,249,251,.68); font-size: 12.5px; }
.sidebar .brand-mark {
    width: 40px; height: 40px; border-radius: 11px;
    background: rgba(255,255,255,.12);
    box-shadow: none; border: 1px solid rgba(255,255,255,.15);
}
.sidebar .sidebar-close { color: #fff; border-color: rgba(255,255,255,.15); background: rgba(255,255,255,.06); }
.sidebar-section-label {
    padding: 2px 10px 9px;
    color: #70e8ff;
    font-size: 12px;
    line-height: 1;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .14em;
}
.sidebar-nav { display: grid; gap: 3px; }
.sidebar .nav-item {
    min-height: 44px;
    padding: 0 11px;
    border-radius: 10px;
    gap: 11px;
    color: rgba(255,255,255,.94);
    font-size: 15px;
    line-height: 1.2;
    font-weight: 600;
    border: 1px solid transparent;
    background: transparent;
    transform: none;
}
.sidebar .nav-item:hover {
    color: #fff;
    background: rgba(255,255,255,.075);
    transform: none;
}
.sidebar .nav-item.active {
    color: #fff;
    background: #0d6a7d;
    border-color: rgba(96,226,248,.15);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.05);
}
.sidebar .nav-item.parent-active { color: #fff; }
.sidebar .nav-icon { width: 25px; color: #a9f3ff; }
.sidebar .nav-label { min-width: 0; flex: 1; }
.sidebar .nav-badge {
    margin-left: auto;
    min-width: 29px;
    height: 24px;
    padding: 0 8px;
    border-radius: 999px;
    background: #0c8097;
    border: 1px solid rgba(138,238,255,.2);
    color: #fff;
    font-size: 12px;
    font-weight: 800;
}
.nav-group { display: grid; gap: 1px; }
.nav-group-toggle { width: 100%; cursor: pointer; text-align: left; }
.nav-caret {
    margin-left: auto;
    color: #d9f8fc;
    font-size: 15px;
    transition: transform .22s ease;
}
.nav-group.open .nav-caret { transform: rotate(180deg); }
.nav-submenu {
    display: grid;
    max-height: 0;
    overflow: hidden;
    margin: 0 0 0 30px;
    padding-left: 14px;
    border-left: 1px solid rgba(159,234,247,.28);
    opacity: 0;
    transform: translateY(-3px);
    transition: max-height .28s ease, opacity .2s ease, transform .2s ease, margin .2s ease;
}
.nav-group.open .nav-submenu {
    max-height: 360px;
    opacity: 1;
    transform: translateY(0);
    margin-top: 3px;
    margin-bottom: 4px;
}
.nav-subitem {
    min-height: 40px;
    display: flex;
    align-items: center;
    padding: 0 10px;
    border-radius: 8px;
    color: rgba(255,255,255,.92);
    font-size: 14.5px;
    line-height: 1.2;
    font-weight: 500;
    transition: background .18s ease, color .18s ease, transform .18s ease;
}
.nav-subitem:hover { background: rgba(255,255,255,.06); color: #fff; transform: translateX(2px); }
.nav-subitem.active { background: rgba(41,190,214,.18); color: #fff; font-weight: 700; }
.sidebar-spacer { min-height: 14px; }
.sidebar .sidebar-foot-card {
    padding: 12px;
    background: rgba(255,255,255,.055);
    border-color: rgba(255,255,255,.10);
    border-radius: 12px;
}
.sidebar .sidebar-foot-card strong { color: #fff; font-size: 13px; }
.sidebar .sidebar-foot-card small { color: rgba(255,255,255,.62); font-size: 11.5px; }

.main-column { margin-left: var(--sidebar-width); }

@media (max-width: 1100px) {
    :root { --sidebar-width: 276px; }
    .main-column { margin-left: 0; }
}

@media (max-width: 520px) {
    :root { --sidebar-width: min(86vw, 286px); }
    .sidebar { padding-left: 10px; padding-right: 10px; }
    .sidebar .nav-item { font-size: 15px; }
    .nav-subitem { font-size: 14.5px; }
}


/* v6 compact, readable navigation */
.sidebar { width: 264px; padding: 18px 12px 14px; }
.sidebar-nav { gap: 3px !important; }
.sidebar-section-label { font-size: 12px !important; letter-spacing: .16em; margin: 13px 10px 7px !important; }
.nav-item { min-height: 44px !important; padding: 9px 11px !important; border-radius: 11px !important; font-size: 15px !important; }
.nav-label { line-height: 1.2; }
.nav-submenu { margin: 3px 0 5px 22px !important; padding: 3px 0 3px 14px !important; gap: 2px !important; }
.nav-subitem { min-height: 39px !important; padding: 8px 10px !important; font-size: 14.5px !important; }
.nav-badge { min-width: 28px; height: 24px; font-size: 12px; }
.brand-copy strong { font-size: 16px; }
.brand-copy small { font-size: 12px; }
.sidebar-status strong { font-size: 13px; }
.sidebar-status small { font-size: 11.5px; }