/* Sidebar — fixed-position, light-on-dark vertical nav. */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-w);
    height: 100vh;
    background: var(--c-ink);
    color: var(--c-white);
    display: flex;
    flex-direction: column;
    z-index: 30;
    transition: transform 0.2s ease;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.sidebar-logo  { height: 30px; width: auto; }
.sidebar-title { font-size: 14px; font-weight: 600; color: var(--c-white); }

.sidebar-nav {
    flex: 1 1 auto;
    overflow-y: auto;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.nav-spacer { flex: 1 1 auto; }

.btPage {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 10px 12px;
    background: transparent;
    border: 0;
    border-radius: var(--r-sm);
    color: rgba(255, 255, 255, 0.78);
    font-size: 14px;
    text-align: left;
    transition: background 0.15s ease, color 0.15s ease;
}
.btPage .mdi      { font-size: 20px; flex: 0 0 20px; }
.btPage .nav-text { flex: 1 1 auto; }
.btPage:hover     { background: rgba(255, 255, 255, 0.08); color: var(--c-white); }
.btPage.active    { background: var(--c-primary); color: var(--c-white); }
.btPage.active:hover { background: var(--c-primary-1); }

.sidebar-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.user-chip { display: flex; align-items: center; gap: 10px; color: var(--c-white); }
.user-chip .mdi { font-size: 28px; color: rgba(255, 255, 255, 0.7); }
.user-chip-meta strong { display: block; font-size: 13px; word-break: break-all; }
.user-chip-meta small  { color: rgba(255, 255, 255, 0.55); font-size: 11px; }

.btn-logout {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.08);
    color: var(--c-white);
    border: 0;
    padding: 8px 12px;
    border-radius: var(--r-sm);
    font-size: 13px;
}
.btn-logout:hover { background: rgba(255, 255, 255, 0.16); }
.btn-logout .mdi  { font-size: 16px; }

/* Mobile hamburger */
.menu-toggle {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 40;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--c-ink);
    color: var(--c-white);
    border: 0;
    box-shadow: var(--sh-md);
}
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(30, 41, 59, 0.5);
    z-index: 25;
}

@media (max-width: 1024px) {
    .sidebar              { transform: translateX(-100%); }
    .sidebar.open         { transform: translateX(0); box-shadow: var(--sh-lg); }
    .sidebar-overlay.show { display: block; }
    .menu-toggle          { display: inline-flex; align-items: center; justify-content: center; }
    .menu-toggle .mdi     { font-size: 22px; }
}
@media (min-width: 1025px) {
    .mobile-only { display: none !important; }
}