:root {
    --sidebar-width: 224px;
    --sidebar-collapsed-width: 64px;
}

.app-sidebar {
    width: var(--sidebar-width);
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    transition: width 0.25s ease;
}

/* ── Header ─────────────────────────────────────────────────────────── */

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    padding: var(--space-4);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    min-height: 64px;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    overflow: hidden;
    flex: 1;
    min-width: 0;
}

.sidebar-brand:hover {
    text-decoration: none;
}

.sidebar-logo {
    width: 140px;
    height: 32px;
    object-fit: contain;
    object-position: left center;
    flex-shrink: 0;
    transition: opacity 0.2s ease;
}

.sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    flex-shrink: 0;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-light);
    border-radius: var(--radius-md);
    transition: background-color 0.15s ease, color 0.15s ease;
    padding: 0;
    font-size: 15px;
}

.sidebar-toggle:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-dark);
}

/* ── Navigation ──────────────────────────────────────────────────────── */

.sidebar-nav {
    flex: 1;
    padding: var(--space-3) var(--space-2);
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 9px var(--space-3);
    border-radius: var(--radius-md);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-medium);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    width: 100%;
    text-align: left;
    transition: background-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
    white-space: nowrap;
    overflow: hidden;
    line-height: var(--line-height-normal);
    position: relative;
}

.sidebar-item:hover {
    background-color: var(--primary-light);
    color: var(--primary);
    text-decoration: none;
}

.sidebar-item.active {
    background: linear-gradient(160deg, var(--info-light) 0%, var(--primary-light) 100%);
    color: var(--primary);
    font-weight: var(--font-weight-semibold);
    box-shadow: inset 3px 0 0 var(--primary);
}

.sidebar-item.active .sidebar-icon,
.sidebar-item.active .sidebar-chevron,
.sidebar-item.active .sidebar-external-icon {
    color: var(--primary);
}

.sidebar-item.active:hover {
    background: linear-gradient(160deg, var(--info-light) 0%, var(--primary-light) 100%);
    color: var(--primary-dark);
    box-shadow: inset 3px 0 0 var(--primary);
    text-decoration: none;
}

.sidebar-item.active:hover .sidebar-icon,
.sidebar-item.active:hover .sidebar-chevron,
.sidebar-item.active:hover .sidebar-external-icon {
    color: var(--primary-dark);
}

/* ── Icons ─────────────────────────────────────────────────────────── */

.sidebar-icon {
    font-size: 13px;
    flex-shrink: 0;
    width: 16px;
    text-align: center;
    color: var(--text-light);
    transition: color 0.15s ease;
}

.sidebar-item:hover .sidebar-icon {
    color: var(--primary);
}

.sidebar-label {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-external-icon {
    font-size: var(--font-size-xs);
    color: var(--text-subtle);
    flex-shrink: 0;
}

.sidebar-group {
    display: flex;
    flex-direction: column;
}

.sidebar-group-trigger {
    width: 100%;
}

.sidebar-chevron {
    flex-shrink: 0;
    font-size: 10px;
    color: var(--text-subtle);
    transition: transform 0.28s ease, color 0.15s ease;
    margin-left: auto;
}

.sidebar-group.active > .sidebar-item .sidebar-chevron {
    transform: rotate(90deg);
}

.sidebar-sub-items {
    display: flex;
    flex-direction: column;
    gap: 1px;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    padding: 0;
    margin: 0;
    padding-left: var(--space-4);
    transition:
        max-height 0.35s ease,
        opacity 0.28s ease,
        padding-top 0.28s ease,
        padding-bottom 0.28s ease;
}

.sidebar-sub-items.show {
    max-height: min(100vh, 720px);
    opacity: 1;
    padding-top: var(--space-1);
    padding-bottom: var(--space-1);
}

.sidebar-sub-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 7px var(--space-3);
    border-radius: var(--radius-md);
    background: none;
    border: none;
    color: var(--text-medium);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-normal);
    font-family: inherit;
    text-decoration: none;
    transition: background-color 0.15s ease, color 0.15s ease;
    white-space: nowrap;
    overflow: hidden;
    width: 100%;
    text-align: left;
    cursor: pointer;
}

.sidebar-sub-item:hover {
    background-color: var(--primary-light);
    color: var(--primary);
    text-decoration: none;
}

.sidebar-sub-item i {
    width: 14px;
    font-size: var(--font-size-xs);
    flex-shrink: 0;
    text-align: center;
    color: var(--text-subtle);
    transition: color 0.15s ease;
}

.sidebar-sub-item:hover i {
    color: var(--primary);
}

/* ── Footer ──────────────────────────────────────────────────────────── */

.sidebar-footer {
    padding: var(--space-3) var(--space-2);
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    flex-shrink: 0;
}

.sidebar-footer-btn {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 9px var(--space-3);
    border-radius: var(--radius-md);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-medium);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    width: 100%;
    text-align: left;
    transition: background-color 0.15s ease, color 0.15s ease;
    white-space: nowrap;
    overflow: hidden;
    line-height: var(--line-height-normal);
}

.sidebar-footer-btn:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-dark);
    text-decoration: none;
}

.sidebar-back-btn {
    color: var(--primary);
}

.sidebar-back-btn:hover {
    background-color: var(--primary-light);
    color: var(--primary-dark);
}

.request-btn-crm .sidebar-icon {
    color: rgba(255, 255, 255, 0.85) !important;
}

/* ── Collapsed state ─────────────────────────────────────────────────── */

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

.app-sidebar.collapsed .sidebar-label,
.app-sidebar.collapsed .sidebar-external-icon,
.app-sidebar.collapsed .sidebar-chevron,
.app-sidebar.collapsed .free-badge,
.app-sidebar.collapsed .sidebar-logo {
    display: none;
}

.app-sidebar.collapsed .sidebar-header {
    justify-content: center;
    padding: var(--space-4) var(--space-2);
}

.app-sidebar.collapsed .sidebar-toggle {
    margin: 0 auto;
}

.app-sidebar.collapsed .sidebar-brand {
    justify-content: center;
    flex: unset;
}

.app-sidebar.collapsed .sidebar-nav {
    align-items: center;
    padding: var(--space-3) var(--space-2);
}

.app-sidebar.collapsed .sidebar-item {
    justify-content: center;
    padding: var(--space-2);
    width: 40px;
}

.app-sidebar.collapsed .sidebar-icon {
    width: auto;
}

.app-sidebar.collapsed .sidebar-sub-items {
    display: none;
}

.app-sidebar.collapsed .sidebar-footer {
    align-items: center;
}

.app-sidebar.collapsed .sidebar-footer-btn {
    justify-content: center;
    padding: var(--space-2);
    width: 40px;
}

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

@media (max-width: 768px) {
    .app-sidebar {
        position: fixed;
        left: 0;
        top: 0;
        height: 100%;
        width: var(--sidebar-width);
        transform: translateX(-100%);
        transition: transform 0.25s ease;
        z-index: var(--z-fixed);
        box-shadow: none;
        border-radius: 0;
    }

    .app-sidebar.mobile-open {
        transform: translateX(0);
        box-shadow: var(--shadow-lg);
    }
}

@media (prefers-reduced-motion: reduce) {
    .sidebar-sub-items,
    .sidebar-chevron,
    .app-sidebar {
        transition: none;
    }
}