/* ── Sidebar Panel (between icon bar and content area) ──────────── */

#sidebar-panel {
    display: none;
    flex-direction: column;
    width: 390px;
    min-width: 160px;
    max-width: 750px;
    overflow: hidden;
    flex-shrink: 0;
    z-index: 4;
    margin-top: 31.5px;
    box-shadow: rgba(0, 0, 0, 0.19) 0px 10px 20px, rgba(0, 0, 0, 0.23) 0px 6px 6px;
}

#sidebar-panel.sidebar-open {
    display: flex;
}

.sidebar-header {
    display: flex;
    align-items: flex-end;
    gap: 2px;
    padding: 0px 3px 0px 6px;
    flex-shrink: 0;
    /* border-right: 0.5px solid #aeaeae; */
    border-bottom: 0.5px solid #666666;
    box-sizing: border-box;
    box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.08);
}

.sidebar-tabs {
    display: flex;
    align-items: flex-end;
    gap: 0px;
    height: 100%;
}

.sidebar-tab {
    display: none;
    position: relative;
    padding: 2px 11px 1px 11px;
    background-color: #ffecb9;
    cursor: pointer;
    border-radius: 5px 5px 0 0;
    white-space: nowrap;
    color: #1a1a1a;
    border: 0.5px solid #666666;
    border-bottom: none;
    font-size: 11px;
    font-family: var(--font-sans);
    line-height: 1.8;
    user-select: none;
    -webkit-user-select: none;
}

.sidebar-tab.open {
    display: block;
}

.sidebar-tab.active {
    background-color: #ffe39e;
    color: #1a1a1a;
    /* font-weight: 500; */
    z-index: 1;
    padding: 3px 11px 2px 11px;
    margin-bottom: -1px;
}

.sidebar-tab-close {
    position: absolute;
    top: 2px;
    right: 3px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: #333333;
    color: #fafafa;
    font-size: 13px;
    line-height: 12px;
    font-weight: 400;
    text-align: center;
    cursor: pointer;
    display: none;
    border: none;
}

.sidebar-tab:hover .sidebar-tab-close {
    display: block;
}

/* Title bar — shows the active view's full title */
.sidebar-title-bar {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 1px 2px 1px 12px;
    background: #ffe39e;
    flex-shrink: 0;
    border-right: 0.5px solid #666666;
    border-bottom: 0.5px solid #999999;
    min-height: 25px;
    border-radius: 3px 3px 0px 0px;
}

.sidebar-title {
    font-size: 11px;
    letter-spacing: 0.02em;
    color: #333333;
    font-family: var(--font-sans);
    flex: 1;
}

.sidebar-close-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 3px;
    display: flex;
    align-items: center;
    margin-left: auto;
}

.sidebar-close-btn:hover {
    background: #c8e6c0;
}

.sidebar-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding-right: 10px;
    background: #fffef6;
    border-right: 0.5px solid #666666;
}

/* Sidebar resize handle */
#sidebar-resizer {
    width: 4px;
    cursor: col-resize;
    flex-shrink: 0;
    position: relative;
    display: block;
    z-index: 5;
    margin-top: var(--toolbar-height, 56px);
    touch-action: none;
    transition: background 0.15s, border-color 0.15s;
    border-left: 0.5px solid transparent;
    border-right: 0.5px solid transparent;
}

#sidebar-resizer:hover,
#sidebar-resizer.dragging {
    background: #ffe39e;
    border-left: 0.5px solid #333333;
    border-right: 0.5px solid #333333;
}

#sidebar-resizer::after {
    content: '';
    position: absolute;
    top: 56.5px;
    left: 2px;
    width: 0;
    bottom: 0;
    opacity: 0;
    transition: opacity 0.15s;
}

#sidebar-resizer::before {
    content: '\f07e';
    font-family: 'Font Awesome 7 Free';
    font-weight: 900;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 10px;
    color: #333333;
    background: #ffe39e;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 0.5px solid #333333;
    opacity: 0;
    transition: opacity 0.15s;
    z-index: 1;
}

#sidebar-resizer:hover::after,
#sidebar-resizer.dragging::after,
#sidebar-resizer:hover::before,
#sidebar-resizer.dragging::before {
    opacity: 1;
}

/* Sidebar scrollbar */
.sidebar-content::-webkit-scrollbar {
    width: 8px;
}

.sidebar-content::-webkit-scrollbar-track {
    background: transparent;
    margin: 4px 0;
}

.sidebar-content::-webkit-scrollbar-thumb {
    background: transparent;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s ease;
}

.sidebar-content:hover::-webkit-scrollbar-thumb {
    background: #6096e5ad;
}

.sidebar-content::-webkit-scrollbar-thumb:hover,
.sidebar-content::-webkit-scrollbar-thumb:active {
    background: #4a7bd0cc;
}