.sidebar-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 998;
    will-change: opacity;
    pointer-events: none;
}

.sidebar-modal-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

body.sidebar-modal-open,
body.sidr-open {
    overflow: hidden;
}

body.sidebar-modal-open #page,
body.sidr-open #page {
    overflow: hidden;
}

.sidebar-modal {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 320px;
    height: 100vh;
    background: var(--surface);
    border-left: 1.5px solid var(--border);
    box-shadow: -4px 0 12px rgba(0, 0, 0, 0.15);
    z-index: 999;
    overflow-y: auto;
    overflow-x: hidden;
    transition: right 0.3s ease;
    will-change: right;
    -webkit-overflow-scrolling: touch;
}

.sidebar-modal.active {
    right: 0;
}

.sidebar-modal-content {
    padding: 16px;
}

.sidebar-modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    font-size: 24px;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: color 0.2s ease, background 0.2s ease;
    z-index: 1000;
    padding: 0;
}

.sidebar-modal-close:hover {
    color: var(--text);
    background: rgba(0, 0, 0, 0.06);
}

.sidebar-toggle-btn {
    display: flex;
    width: 100%;
    padding: 10px 16px;
    margin: 0 0 20px 0;
    background: var(--surface);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    text-align: left;
    box-shadow: var(--shadow-xs);
    transition: border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
    box-sizing: border-box;
    align-items: center;
    gap: 8px;
}

.sidebar-toggle-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.sidebar-toggle-btn .toggle-icon {
    margin-left: auto;
    transition: transform 0.2s ease;
    font-size: 12px;
}

.sidebar-toggle-btn.open .toggle-icon {
    transform: rotate(180deg);
}

.sidebar-original {
    display: none !important;
}

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

.sidebar-modal::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar-modal::-webkit-scrollbar-thumb {
    background: #c8d8e0;
    border-radius: 3px;
}

.sidebar-modal::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}