.sidebar {
    height: 100vh;
    width: 0;
    background-color: #fff;
    overflow-x: hidden;
    overflow-y: auto;
    transition: width 0.3s ease;
    box-shadow: -2px 0 5px rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
}

/* Unified header styling for both sidebar and popup */
.sidebar-header {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dim) 100%);
    color: white;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 10;
}

.sidebar-title {
    font-size: 1em;
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sidebar-controls {
    display: flex;
    gap: 0.5rem;
}

.sidebar-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    color: white;
    cursor: pointer;
    padding: 0.3rem 0.5rem;
    font-size: 1em;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

#sidebar-content {
    padding: 20px;
}

#sidebar-content-container button {
    float: right;
    margin-bottom: 1.0em;
}

/* Overlay removed - no longer needed for side-by-side layout */

/* Main layout container for flexbox */
.main-container {
    display: flex;
    min-height: 100vh;
    max-height: 100vh;
    overflow: hidden;
}

.main-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: auto;
    height: 100vh;
}

.sidebar.open {
    width: 500px;
}

/* Grid table layout for detail view */
.detail-grid-table {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0;
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 1.0rem;
}

.detail-row {
    display: contents;
}

.detail-row .detail-label {
    background-color: #f8f9fa;
    padding: 0.75rem 1rem;
    font-weight: 600;
    color: #495057;
    border-bottom: 1px solid var(--border);
    border-right: 1px solid var(--border);
    white-space: nowrap;
}

.detail-row .detail-value {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    font-family: var(--monospace-jp-font);
    background-color: white;
}

.detail-bracket-code {
    color: #6b7280;
    font-size: 0.82em;
    margin-right: 0.35em;
}

.detail-row:last-child .detail-label,
.detail-row:last-child .detail-value {
    border-bottom: none;
}

/* Grid table layout for edit form */
.form-grid-table {
    display: grid;
    /* Label width for longer Japanese labels */
    grid-template-columns: 160px 1fr;
    align-items: stretch;
    gap: 0;
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 1.0rem;
}

.form-row {
    display: contents;
}

.form-row label {
    background-color: #f8f9fa;
    padding: 0.75rem 1rem;
    font-weight: 600;
    color: #495057;
    border-bottom: 1px solid var(--border);
    border-right: 1px solid var(--border);
    white-space: nowrap;
    display: flex;
    align-items: center;
    font-size: 0.9em;
}

.form-row input[type="text"] {
    border: none;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
    background-color: white;
    padding: 0.75rem 1rem;
    font-family: var(--monospace-jp-font);
    box-sizing: border-box;
    height: 100%;
}

.form-row input[type="text"]:focus {
    outline: none;
    background-color: #fffbf0;
    border-bottom: 1px solid var(--accent);
}

.form-row:last-child label,
.form-row:last-child input[type="text"],
.form-row:last-child .input-with-preview {
    border-bottom: none;
}

/* Special handling for ruibetsu field with preview */
.input-with-preview {
    display: flex;
    flex-direction: column;
    border-bottom: 1px solid var(--border);
    justify-content: center;
}

.input-with-preview input[type="text"] {
    border-bottom: none;
}

.input-with-preview .ruibetsu-preview {
    margin: 0;
    border-radius: 0;
    border-top: 1px solid #e9ecef;
}

/* Popup window specific styles */
.popup-window {
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.popup-content {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    background: white;
}

/* React popup detail layout */
.popup-detail-app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

.popup-detail-content {
    flex: 1;
    overflow-y: auto;
    background: white;
}

.popup-content::-webkit-scrollbar {
    width: 8px;
}

.popup-content::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.popup-content::-webkit-scrollbar-thumb {
    background: var(--accent-dim);
    border-radius: 4px;
}

.popup-content::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--border-dark);
}

.loading-state::before {
    content: '';
    width: 40px;
    height: 40px;
    border: 4px solid var(--accent-bg);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}