/* Modern sidebar + submenu — UCB brand */
:root {
    --nav-accent: #e21c23;
    --nav-accent-strong: #c4171e;
    --nav-accent-soft: #fde8e9;
    --nav-ink: #000000;
    --nav-muted: #4b5563;
    --nav-line: #e5e7eb;
    --nav-surface: #ffffff;
    --nav-radius: 12px;
}

.sidebar-main {
    background: linear-gradient(180deg, #ffffff 0%, #fafafa 100%) !important;
    border: 1px solid var(--nav-line) !important;
    border-radius: 16px !important;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 10px 28px rgba(0, 0, 0, 0.06) !important;
    /* Must stay visible so collapsed flyout submenus can escape the rail */
    overflow: visible !important;
}

.sidebar-main .sidebar-content {
    padding-bottom: 0.75rem;
}

.sidebar-main .sidebar-section:first-child {
    border-bottom: 1px solid var(--nav-line);
    background: linear-gradient(135deg, #ffffff 0%, #f9fafb 100%);
}

.sidebar-main .sidebar-section-body {
    padding: 0.95rem 1rem !important;
    justify-content: space-between !important;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    min-width: 0;
}

.sidebar-brand__logo {
    height: 28px;
    width: auto;
    object-fit: contain;
}

.sidebar-brand__logo--dark {
    display: none !important;
}

html[data-color-theme="dark"] .sidebar-brand__logo--light {
    display: none !important;
}

html[data-color-theme="dark"] .sidebar-brand__logo--dark.d-sm-inline-block {
    display: inline-block !important;
}

@media (max-width: 575.98px) {
    html[data-color-theme="dark"] .sidebar-brand__logo--dark {
        display: none !important;
    }
}

.sidebar-brand__text {
    margin: 0;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--nav-ink);
    letter-spacing: -0.01em;
}

.sidebar-main .sidebar-control,
.sidebar-main .sidebar-mobile-main-toggle {
    width: 2rem;
    height: 2rem;
    border: 1px solid var(--nav-line) !important;
    background: #fff !important;
    color: var(--nav-muted) !important;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.sidebar-main .sidebar-control:hover,
.sidebar-main .sidebar-mobile-main-toggle:hover {
    color: var(--nav-accent) !important;
    border-color: #f5a3a6 !important;
    background: var(--nav-accent-soft) !important;
}

.sidebar-main .nav-sidebar {
    padding: 0.55rem 0.65rem 0.25rem;
}

.sidebar-main .nav-item-header {
    padding: 0.85rem 0.55rem 0.45rem !important;
}

.sidebar-main .nav-item-header > div {
    font-size: 0.68rem !important;
    font-weight: 700 !important;
    letter-spacing: 0.08em !important;
    color: var(--nav-muted) !important;
    opacity: 1 !important;
}

.sidebar-main .nav-sidebar > .nav-item {
    margin-bottom: 0.2rem;
}

.sidebar-main .nav-sidebar > .nav-item > .nav-link {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.7rem;
    min-height: 2.55rem;
    padding: 0.55rem 2.1rem 0.55rem 0.8rem !important;
    margin: 0;
    border-radius: var(--nav-radius);
    color: var(--nav-ink) !important;
    font-weight: 500;
    font-size: 0.9rem;
    transition: background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.sidebar-main .nav-sidebar > .nav-item > .nav-link > i:first-child {
    width: 1.85rem;
    height: 1.85rem;
    border-radius: 9px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    color: var(--nav-ink);
    background: #f3f4f6;
    flex-shrink: 0;
    transition: background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.sidebar-main .nav-sidebar > .nav-item > .nav-link > span {
    flex: 1;
    min-width: 0;
    line-height: 1.25;
    color: var(--nav-ink);
}

.sidebar-main .nav-sidebar > .nav-item > .nav-link:hover,
.sidebar-main .nav-sidebar > .nav-item > .nav-link:focus {
    background: #f3f4f6 !important;
    color: var(--nav-ink) !important;
}

.sidebar-main .nav-sidebar > .nav-item > .nav-link:hover > i:first-child,
.sidebar-main .nav-sidebar > .nav-item > .nav-link:focus > i:first-child {
    background: var(--nav-accent-soft);
    color: var(--nav-accent);
}

.sidebar-main .nav-sidebar > .nav-item > .nav-link.active {
    background: linear-gradient(135deg, #fff5f5 0%, #fde8e9 100%) !important;
    color: var(--nav-ink) !important;
    font-weight: 600;
    box-shadow: inset 0 0 0 1px rgba(226, 28, 35, 0.14);
}

.sidebar-main .nav-sidebar > .nav-item > .nav-link.active > i:first-child {
    background: #fff;
    color: var(--nav-accent);
    box-shadow: 0 4px 10px rgba(226, 28, 35, 0.18);
}

.sidebar-main .nav-sidebar > .nav-item > .nav-link.active > span {
    color: var(--nav-ink);
}

.sidebar-main .nav-sidebar > .nav-item > .nav-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20%;
    bottom: 20%;
    width: 3px;
    border-radius: 999px;
    background: var(--nav-accent);
}

/* Parent open state */
.sidebar-main .nav-item-submenu.nav-item-open > .nav-link {
    background: linear-gradient(135deg, #fff5f5 0%, #fde8e9 100%) !important;
    color: var(--nav-ink) !important;
    font-weight: 600;
    box-shadow: inset 0 0 0 1px rgba(226, 28, 35, 0.14);
}

.sidebar-main .nav-item-submenu.nav-item-open > .nav-link > i:first-child {
    background: #fff;
    color: var(--nav-accent);
    box-shadow: 0 4px 10px rgba(226, 28, 35, 0.16);
}

.sidebar-main .nav-item-submenu.nav-item-open > .nav-link > span {
    color: var(--nav-ink);
}

.sidebar-main .nav-item-submenu.nav-item-open > .nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20%;
    bottom: 20%;
    width: 3px;
    border-radius: 999px;
    background: var(--nav-accent);
}

/* Submenu arrow — keep theme glyph, polish motion/color */
.sidebar-main .nav-item-submenu > .nav-link:after {
    opacity: 0.55;
    color: var(--nav-ink) !important;
    transition: transform 0.2s ease, opacity 0.2s ease, color 0.2s ease;
    top: 50% !important;
    transform: translateY(-50%);
    inset-inline-end: 0.85rem;
}

.sidebar-main .nav-item-submenu.nav-item-open > .nav-link:after {
    opacity: 1;
    color: var(--nav-accent) !important;
    transform: translateY(-50%) rotate(90deg);
}

/* Submenu panel */
.sidebar-main .nav-group-sub {
    margin: 0.35rem 0 0.45rem 0.55rem !important;
    padding: 0.35rem !important;
    border-radius: 12px;
    background: #fafafa;
    border: 1px solid #efefef;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
    position: relative;
}

.sidebar-main .nav-group-sub::before {
    content: '';
    position: absolute;
    left: -0.35rem;
    top: 0.5rem;
    bottom: 0.5rem;
    width: 2px;
    border-radius: 999px;
    background: linear-gradient(180deg, #e21c23, #f5a3a6);
}

.sidebar-main .nav-group-sub > .nav-item {
    margin-bottom: 0.15rem;
}

.sidebar-main .nav-group-sub > .nav-item:last-child {
    margin-bottom: 0;
}

.sidebar-main .nav-group-sub > .nav-item > .nav-link {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    min-height: 2.15rem;
    padding: 0.45rem 0.7rem !important;
    border-radius: 10px;
    color: var(--nav-ink) !important;
    font-size: 0.84rem;
    font-weight: 500;
    transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.sidebar-main .nav-group-sub > .nav-item > .nav-link > i {
    font-size: 0.95rem;
    color: var(--nav-ink);
    width: 1.1rem;
    text-align: center;
    flex-shrink: 0;
}

.sidebar-main .nav-group-sub > .nav-item > .nav-link:hover,
.sidebar-main .nav-group-sub > .nav-item > .nav-link:focus {
    background: var(--nav-accent-soft) !important;
    color: var(--nav-ink) !important;
    box-shadow:
        0 1px 2px rgba(226, 28, 35, 0.12),
        0 6px 16px rgba(226, 28, 35, 0.18) !important;
    transform: translateY(-1px);
}

.sidebar-main .nav-group-sub > .nav-item > .nav-link:hover > i,
.sidebar-main .nav-group-sub > .nav-item > .nav-link:focus > i {
    color: var(--nav-accent);
}

.sidebar-main .nav-group-sub > .nav-item > .nav-link.active {
    background: linear-gradient(135deg, #fff5f5 0%, #fde8e9 100%) !important;
    color: var(--nav-ink) !important;
    font-weight: 600;
    box-shadow: inset 0 0 0 1px rgba(226, 28, 35, 0.16);
}

.sidebar-main .nav-group-sub > .nav-item > .nav-link.active > i {
    color: var(--nav-accent);
}

/* Collapsed / resized sidebar */
.sidebar-main.sidebar-main-resized {
    overflow: visible !important;
}

.sidebar-main.sidebar-main-resized .sidebar-content {
    overflow: visible !important;
}

.sidebar-main.sidebar-main-resized .sidebar-section,
.sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item,
.sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item-submenu {
    overflow: visible !important;
    position: relative;
}

.sidebar-main.sidebar-main-resized .sidebar-section:first-child .sidebar-section-body {
    padding: 0.65rem 0.35rem !important;
    justify-content: center !important;
}

.sidebar-main.sidebar-main-resized .nav-sidebar {
    padding: 0.35rem 0.3rem 0.25rem !important;
}

.sidebar-main.sidebar-main-resized .nav-item-header {
    display: flex !important;
    justify-content: center;
    padding: 0.45rem 0 !important;
}

.sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item > .nav-link {
    justify-content: center !important;
    align-items: center !important;
    gap: 0 !important;
    width: 2.55rem !important;
    min-width: 2.55rem !important;
    max-width: 2.55rem !important;
    min-height: 2.55rem !important;
    height: 2.55rem !important;
    margin: 0 auto !important;
    padding: 0 !important;
    border-radius: 12px !important;
    box-shadow: none !important;
    background: transparent !important;
}

.sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item > .nav-link > span,
.sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item > .nav-link:after {
    display: none !important;
}

.sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item > .nav-link > i:first-child {
    width: 1.85rem !important;
    height: 1.85rem !important;
    margin: 0 !important;
}

.sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item > .nav-link:hover,
.sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item > .nav-link:focus {
    background: #f3f4f6 !important;
}

.sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item > .nav-link.active,
.sidebar-main.sidebar-main-resized .nav-item-submenu.nav-item-open > .nav-link {
    width: 2.55rem !important;
    background: linear-gradient(135deg, #fff5f5 0%, #fde8e9 100%) !important;
    box-shadow: inset 0 0 0 1px rgba(226, 28, 35, 0.16) !important;
}

.sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item > .nav-link.active::before,
.sidebar-main.sidebar-main-resized .nav-item-submenu.nav-item-open > .nav-link::before {
    left: 0.15rem !important;
    top: 22% !important;
    bottom: 22% !important;
    width: 3px !important;
}

.sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item > .nav-link.active > i:first-child,
.sidebar-main.sidebar-main-resized .nav-item-submenu.nav-item-open > .nav-link > i:first-child {
    background: #fff !important;
    color: var(--nav-accent) !important;
    box-shadow: 0 3px 8px rgba(226, 28, 35, 0.16) !important;
}

/* Flyout panel when sidebar is icon-only */
.sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item-submenu > .nav-group-sub {
    margin: 0 !important;
    padding: 0.45rem !important;
    background: #ffffff !important;
    border: 1px solid var(--nav-line) !important;
    border-radius: 12px !important;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.14) !important;
    z-index: 1050 !important;
}

.sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item-submenu > .nav-group-sub::before {
    display: none !important;
}

.sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item-submenu.nav-group-sub-visible > .nav-group-sub {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    height: auto !important;
}

/* Scrollbar polish */
.sidebar-main .sidebar-content {
    scrollbar-width: thin;
    scrollbar-color: #d1d5db transparent;
}

.sidebar-main .sidebar-content::-webkit-scrollbar {
    width: 6px;
}

.sidebar-main .sidebar-content::-webkit-scrollbar-thumb {
    background: #d1d5db;
    border-radius: 999px;
}

/* =========================================================
   Dark mode — atmospheric sidebar (readable white text)
   ========================================================= */
html[data-color-theme="dark"] {
    --nav-ink: #ffffff;
    --nav-muted: rgba(255, 255, 255, 0.65);
    --nav-line: rgba(255, 255, 255, 0.12);
    --nav-surface: #1a1f29;
    --nav-accent-soft: rgba(226, 28, 35, 0.2);
}

/* Never set position:relative here — it reactivates Limitless
   left: calc(...*-1) and slides the menu off-screen. */
html[data-color-theme="dark"] .sidebar-main {
    background:
        radial-gradient(ellipse 90% 40% at 0% -10%, rgba(226, 28, 35, 0.22), transparent 55%),
        radial-gradient(ellipse 70% 35% at 100% 100%, rgba(226, 28, 35, 0.1), transparent 50%),
        linear-gradient(180deg, #1e2430 0%, #151925 55%, #12151d 100%) !important;
    border-color: rgba(255, 255, 255, 0.1) !important;
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4) !important;
}

@media (min-width: 992px) {
    html[data-color-theme="dark"] .sidebar-expand-lg.sidebar-main {
        position: static !important;
        left: auto !important;
    }
}

html[data-color-theme="dark"] .sidebar-main .sidebar-content {
    scrollbar-color: rgba(255, 255, 255, 0.25) transparent;
}

html[data-color-theme="dark"] .sidebar-main .sidebar-content::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.25);
}

html[data-color-theme="dark"] .sidebar-main .sidebar-section:first-child {
    background: rgba(255, 255, 255, 0.03) !important;
    border-bottom-color: rgba(255, 255, 255, 0.1) !important;
}

html[data-color-theme="dark"] .sidebar-brand__text {
    color: #ffffff !important;
}

/* Dark mode uses dedicated light logo asset (dlogoDark.png) */
html[data-color-theme="dark"] .sidebar-brand__logo--dark {
    filter: none;
}

html[data-color-theme="dark"] .sidebar-main .sidebar-control,
html[data-color-theme="dark"] .sidebar-main .sidebar-mobile-main-toggle,
html[data-color-theme="dark"] .sidebar-main .btn-light.sidebar-control,
html[data-color-theme="dark"] .sidebar-main .btn-light.sidebar-mobile-main-toggle {
    background: rgba(255, 255, 255, 0.06) !important;
    border-color: rgba(255, 255, 255, 0.14) !important;
    color: rgba(255, 255, 255, 0.8) !important;
}

html[data-color-theme="dark"] .sidebar-main .sidebar-control:hover,
html[data-color-theme="dark"] .sidebar-main .sidebar-mobile-main-toggle:hover,
html[data-color-theme="dark"] .sidebar-main .btn-light.sidebar-control:hover,
html[data-color-theme="dark"] .sidebar-main .btn-light.sidebar-mobile-main-toggle:hover {
    background: rgba(226, 28, 35, 0.22) !important;
    border-color: rgba(226, 28, 35, 0.5) !important;
    color: #ffffff !important;
}

html[data-color-theme="dark"] .sidebar-main .nav-item-header > div {
    color: rgba(255, 255, 255, 0.55) !important;
    opacity: 1 !important;
}

html[data-color-theme="dark"] .sidebar-main .nav-sidebar > .nav-item > .nav-link {
    color: #ffffff !important;
}

html[data-color-theme="dark"] .sidebar-main .nav-sidebar > .nav-item > .nav-link > span {
    color: #ffffff !important;
}

html[data-color-theme="dark"] .sidebar-main .nav-sidebar > .nav-item > .nav-link > i:first-child {
    color: #ffffff !important;
    background: rgba(255, 255, 255, 0.08) !important;
}

html[data-color-theme="dark"] .sidebar-main .nav-sidebar > .nav-item > .nav-link:hover,
html[data-color-theme="dark"] .sidebar-main .nav-sidebar > .nav-item > .nav-link:focus {
    background: rgba(226, 28, 35, 0.14) !important;
    color: #ffffff !important;
}

html[data-color-theme="dark"] .sidebar-main .nav-sidebar > .nav-item > .nav-link:hover > i:first-child,
html[data-color-theme="dark"] .sidebar-main .nav-sidebar > .nav-item > .nav-link:focus > i:first-child {
    background: rgba(226, 28, 35, 0.25) !important;
    color: #ff6b70 !important;
}

html[data-color-theme="dark"] .sidebar-main .nav-sidebar > .nav-item > .nav-link.active,
html[data-color-theme="dark"] .sidebar-main .nav-item-submenu.nav-item-open > .nav-link {
    background: rgba(226, 28, 35, 0.18) !important;
    color: #ffffff !important;
    box-shadow: inset 0 0 0 1px rgba(226, 28, 35, 0.28);
}

html[data-color-theme="dark"] .sidebar-main .nav-item-submenu.nav-item-open > .nav-link:after {
    color: #e21c23 !important;
}

html[data-color-theme="dark"] .sidebar-main .nav-sidebar > .nav-item > .nav-link.active > span,
html[data-color-theme="dark"] .sidebar-main .nav-item-submenu.nav-item-open > .nav-link > span {
    color: #ffffff !important;
}

html[data-color-theme="dark"] .sidebar-main .nav-sidebar > .nav-item > .nav-link.active > i:first-child,
html[data-color-theme="dark"] .sidebar-main .nav-item-submenu.nav-item-open > .nav-link > i:first-child {
    background: #fff !important;
    color: #e21c23 !important;
    box-shadow: 0 6px 14px rgba(226, 28, 35, 0.35);
}

html[data-color-theme="dark"] .sidebar-main .nav-item-submenu > .nav-link:after {
    color: rgba(255, 255, 255, 0.45) !important;
}

html[data-color-theme="dark"] .sidebar-main .nav-group-sub {
    background: rgba(0, 0, 0, 0.2) !important;
    border-color: rgba(255, 255, 255, 0.08) !important;
}

html[data-color-theme="dark"] .sidebar-main .nav-group-sub > .nav-item > .nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
}

html[data-color-theme="dark"] .sidebar-main .nav-group-sub > .nav-item > .nav-link > i {
    color: rgba(255, 255, 255, 0.55) !important;
}

html[data-color-theme="dark"] .sidebar-main .nav-group-sub > .nav-item > .nav-link:hover,
html[data-color-theme="dark"] .sidebar-main .nav-group-sub > .nav-item > .nav-link:focus {
    background: rgba(226, 28, 35, 0.18) !important;
    color: #ffffff !important;
    box-shadow:
        0 1px 2px rgba(226, 28, 35, 0.2),
        0 8px 18px rgba(226, 28, 35, 0.28) !important;
}

html[data-color-theme="dark"] .sidebar-main .nav-group-sub > .nav-item > .nav-link.active {
    background: rgba(226, 28, 35, 0.2) !important;
    color: #ffffff !important;
}

html[data-color-theme="dark"] .sidebar-main .nav-group-sub > .nav-item > .nav-link.active > i {
    color: #e21c23 !important;
}

html[data-color-theme="dark"] .sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item-submenu > .nav-group-sub {
    background: #1f2430 !important;
    border-color: rgba(255, 255, 255, 0.12) !important;
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.45) !important;
}

html[data-color-theme="dark"] .sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item > .nav-link:hover,
html[data-color-theme="dark"] .sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item > .nav-link:focus {
    background: rgba(255, 255, 255, 0.06) !important;
}

html[data-color-theme="dark"] .sidebar-main.sidebar-main-resized .nav-sidebar > .nav-item > .nav-link.active,
html[data-color-theme="dark"] .sidebar-main.sidebar-main-resized .nav-item-submenu.nav-item-open > .nav-link {
    background: rgba(226, 28, 35, 0.18) !important;
    box-shadow: inset 0 0 0 1px rgba(226, 28, 35, 0.35) !important;
}