/* ── Sidebar layout ───────────────────────────────────────────── */

:root {
    --sidebar-width:          240px;
    --sidebar-collapsed-width: 48px;
    --sidebar-header-height:  40px;
}

/* ── App body: sidebar + content column ── */
.app-body {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: row;
    overflow: hidden;
}

.main-column {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ── Sidebar ── */
.app-sidebar {
    position: fixed;
    top: var(--panel-gap);
    left: var(--panel-gap);
    height: calc(100% - var(--panel-gap) * 2);
    width: var(--sidebar-width);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    background: var(--panel-bg);
    border-radius: var(--radius-panel);
    box-shadow: var(--panel-shadow);
    padding: 0 6px;
    transition: width 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: visible;
    z-index: 100;
}

/* Fade text on collapse */
.sidebar-brand-name,
.sidebar-link span,
.sidebar-user-name {
    opacity: 1;
    transition: opacity 0.15s ease 0.1s;
}

.app-sidebar.is-collapsed .sidebar-brand-name,
.app-sidebar.is-collapsed .sidebar-link span,
.app-sidebar.is-collapsed .sidebar-user-name {
    opacity: 0;
    transition: opacity 0.05s ease;
    pointer-events: none;
}

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

/* When expanded: enable click target */
.app-sidebar:not(.is-collapsed) .sidebar-close-target {
    pointer-events: auto;
}

/* Invisible click target to close sidebar */
.sidebar-close-target {
    position: fixed;
    inset: 0;
    z-index: -1;
    opacity: 0;
    pointer-events: none;
}

/* ── Header (toggle + brand) ── */
.sidebar-header {
    height: var(--sidebar-header-height);
    display: flex;
    align-items: center;
    flex-shrink: 0;
    overflow: hidden;
}

.sidebar-brand {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 100%;
    color: var(--text);
    text-decoration: none;
    cursor: pointer;
    transition: color 0.12s;
    overflow: hidden;
    white-space: nowrap;
    padding-right: 36px; /* offset toggle btn width so brand is visually centered */
}
.sidebar-brand:hover { color: var(--text); text-decoration: none; }

.sidebar-chevron-anim {
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-brand-logo,
.sidebar-brand-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.sidebar-brand-name {
    font-weight: 600;
    font-size: var(--text-base);
    color: var(--text);
    white-space: nowrap;
}

.sidebar-toggle-btn {
    width: 36px;
    height: 32px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-dim);
    border-radius: var(--radius-sm);
    transition: color 0.12s, background 0.12s;
    margin-left: 0;
}
.sidebar-toggle-btn:hover { color: var(--text); background: color-mix(in srgb, var(--accent) 8%, transparent); }

/* ── Nav links ── */
.sidebar-nav {
    display: flex;
    flex-direction: column;
    padding: 4px 0;
}

/* Unified link style — used for all sidebar items */
.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0;
    padding: 0;
    height: 32px;
    color: var(--text-dim);
    text-decoration: none;
    font-size: var(--text-base);
    white-space: nowrap;
    overflow: hidden;
    transition: background 0.12s, color 0.12s;
    cursor: pointer;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    border-radius: var(--radius-sm);
}
.sidebar-link:hover { background: color-mix(in srgb, var(--accent) 8%, transparent); color: var(--text); }
.sidebar-link.active { color: var(--accent); }
.sidebar-link svg {
    flex-shrink: 0;
    width: 16px;
    height: 16px;
    margin-left: 10px;
    margin-right: 10px;
}

/* ── Spacer ── */
.sidebar-flex-spacer {
    flex: 1;
}

/* ── Footer (legal + user) ── */
.sidebar-footer {
    display: flex;
    flex-direction: column;
    padding: 4px 0;
    position: relative;
    z-index: 160;
}

/* Footer links without icons: indent text to match icon-based rows */
.sidebar-footer > a.sidebar-link:not(:has(svg)) {
    padding-left: 36px;
}
.app-sidebar.is-collapsed .sidebar-footer > a.sidebar-link:not(:has(svg)) {
    padding-left: 0;
}

/* ── User menu ── */
.sidebar-user-wrap {
    position: relative;
}

.sidebar-panel-backdrop {
    position: fixed;
    inset: 0;
    z-index: 150;
}

.sidebar-user-menu {
    position: absolute;
    bottom: 0;
    left: 100%;
    margin-left: 4px;
    width: 220px;
    background: var(--panel-bg);
    border-radius: var(--radius-panel);
    box-shadow: var(--panel-shadow);
    z-index: 200;
    overflow: hidden;
}
.sidebar-user-menu-header {
    padding: 8px 12px 4px;
    font-size: var(--text-base);
    color: var(--text-dim);
}
.sidebar-user-menu-item {
    display: block;
    width: 100%;
    padding: 7px 12px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text);
    font-size: var(--text-base);
    text-align: left;
    transition: background 0.12s, color 0.12s;
}
.sidebar-user-menu-item:hover { background: color-mix(in srgb, var(--error) 12%, transparent); color: var(--error); }

/* ── Sidebar spacer (reserves rail width) ── */
.sidebar-spacer {
    display: block;
    width: var(--sidebar-collapsed-width);
    min-width: var(--sidebar-collapsed-width);
    max-width: var(--sidebar-collapsed-width);
    flex: 0 0 var(--sidebar-collapsed-width);
}

/* ── Large screens: sidebar in flow ── */
@media (min-width: 1024px) {
    .app-sidebar {
        position: relative;
        top: auto;
        left: auto;
        height: auto;
        z-index: auto;
        margin: var(--panel-gap);
        margin-right: 0;
    }
    .app-sidebar:not(.is-collapsed) .sidebar-close-target {
        pointer-events: none;
    }
    .sidebar-spacer {
        display: none;
    }
}

/* ── Mobile ── */
@media (max-width: 480px) {
    .sidebar-user-menu {
        width: min(220px, calc(100vw - var(--sidebar-collapsed-width) - 16px)) !important;
    }
}