/* ── Sidebar ── */
.sidebar {
    position: fixed;
    top: 0;
    inset-inline-start: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--color-bg-sidebar);
    color: var(--color-text-on-primary);
    z-index: 1040;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-base);
    overflow-y: auto;
}

/* ── Mobile Close ── */
.sidebar__close {
    display: none;
    position: absolute;
    top: var(--space-sm);
    inset-inline-end: var(--space-sm);
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.25em;
    cursor: pointer;
    padding: var(--space-xs);
    line-height: 1;
    z-index: 1;
    transition: color var(--transition-fast);
}

.sidebar__close:hover {
    color: var(--color-text-on-primary);
}

/* ── Brand ── */
.sidebar__brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-lg) var(--space-lg);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-on-primary);
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar__brand:hover {
    color: var(--color-accent-light);
}

.sidebar__brand i {
    font-size: 1.3em;
}

/* ── Navigation ── */
.sidebar__nav {
    flex: 1;
    padding: var(--space-md) 0;
}

.sidebar__section-label {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: rgba(255, 255, 255, 0.7);
    margin-top: var(--space-sm);
}

.sidebar__link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    transition: background-color var(--transition-fast), color var(--transition-fast);
    border-radius: 0;
}

.sidebar__link:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--color-text-on-primary);
}

.sidebar__link--active {
    background-color: rgba(255, 255, 255, 0.12);
    color: var(--color-text-on-primary);
    font-weight: var(--font-weight-medium);
    border-inline-start: 3px solid var(--color-accent);
}

.sidebar__link i {
    width: 1.25em;
    text-align: center;
    font-size: 0.9em;
}

.sidebar__link .badge {
    font-size: 0.7em;
}

/* ── User Section ── */
.sidebar__user {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    position: relative;
}

.sidebar__user-avatar {
    width: 2.25em;
    height: 2.25em;
    border-radius: var(--radius-full);
    background-color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
    flex-shrink: 0;
    color: inherit;
    border: none;
    padding: 0;
    appearance: none;
    cursor: pointer;
    transition: opacity var(--transition-fast);
}

.sidebar__user-avatar:hover {
    opacity: 0.8;
}

.sidebar__user-avatar:focus-visible {
    outline: 2px solid var(--color-text-on-primary);
    outline-offset: 2px;
}

.sidebar__user-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-on-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

.sidebar__user-menu {
    display: none;
    position: absolute;
    bottom: 100%;
    inset-inline-start: var(--space-lg);
    margin-bottom: var(--space-sm);
    background-color: var(--color-bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-dropdown);
    min-width: 10rem;
    overflow: hidden;
    z-index: 100;
}

.sidebar__user-menu.is-open {
    display: block;
}

.sidebar__user-menu > form {
    margin: 0;
}

.sidebar__user-menu-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    text-decoration: none;
    border: none;
    background: none;
    width: 100%;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.sidebar__user-menu-item:hover {
    background-color: var(--color-bg-hover, rgba(0, 0, 0, 0.05));
}

.sidebar__user-menu-item:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: -2px;
}

.sidebar__user-menu-item i {
    width: 1.2em;
    text-align: center;
    color: var(--color-text-muted);
}

/* ── Topbar ── */
.topbar {
    height: var(--topbar-height);
    background-color: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    padding: 0 var(--space-lg);
    position: sticky;
    top: 0;
    z-index: 1020;
}

.topbar__toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 1.25em;
    cursor: pointer;
    padding: var(--space-xs) var(--space-sm);
    margin-inline-end: var(--space-sm);
}

/* ── App Layout ── */
.app-layout {
    display: flex;
    min-height: 100vh;
    flex: 1;
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
}

.app-content {
    flex: 1;
    margin-inline-start: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    max-width: calc(100vw - var(--sidebar-width));
    overflow-x: hidden;
}

.app-main {
    flex: 1;
    padding: var(--space-lg) var(--space-xl);
    overflow-x: hidden;
}

/* ── Mobile Overlay ── */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1035;
}

/* ── Responsive ── */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(100%);
    }

    .sidebar--open {
        transform: translateX(0);
    }

    .sidebar-overlay--visible {
        display: block;
    }

    .app-content {
        margin-inline-start: 0;
        max-width: 100vw;
    }

    .topbar__toggle {
        display: block;
    }

    .sidebar__close {
        display: block;
    }
}