.annotation-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.annotation-sidebar {
    width: 360px;
    background: white;
    border-right: 1px solid #e0e0e0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.annotation-sidebar-header {
    padding: 20px;
    border-bottom: 1px solid #e0e0e0;
    flex-shrink: 0;
}

.annotation-sidebar-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin-bottom: 16px;
}

.annotation-sidebar-header .form-control {
    width: 100%;
    box-sizing: border-box;
    padding: 10px 14px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 14px;
    background-color: white;
    cursor: pointer;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.annotation-sidebar-header .form-control:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.annotation-sidebar-header select.form-control {
    min-width: 0;
    max-width: 100%;
}

.annotation-sidebar-header select.form-control option {
    padding: 8px 12px;
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.annotation-sidebar-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding: 20px;
}

.annotation-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: #f5f5f5;
}

.annotation-header {
    padding: 20px 24px;
    background: white;
    border-bottom: 1px solid #e0e0e0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.annotation-header h1 {
    font-size: 24px;
    font-weight: 600;
    color: #333;
}

.annotation-content {
    flex: 1;
    display: flex;
    overflow: hidden;
    gap: 24px;
    padding: 24px;
}

.annotation-qa-display {
    flex: 1;
    overflow-y: auto;
    min-width: 0;
}

.annotation-form-panel {
    width: 400px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    flex-shrink: 0;
}

.annotation-form-panel-header {
    padding: 16px 20px;
    background: #f8f9fa;
    border-bottom: 1px solid #e0e0e0;
    flex-shrink: 0;
}

.annotation-form-panel-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin: 0;
}

.annotation-form-panel-body {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.qa-card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 24px;
    overflow: hidden;
}

.qa-card-header {
    padding: 16px 20px;
    background: #f8f9fa;
    border-bottom: 1px solid #e0e0e0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.qa-card-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin: 0;
}

.qa-card-navigation {
    display: flex;
    gap: 8px;
    align-items: center;
}

.qa-card-body {
    padding: 20px;
}

.qa-card-navigation-bottom {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}

.qa-item {
    margin-bottom: 20px;
}

.qa-item:last-child {
    margin-bottom: 0;
}

.qa-label {
    font-size: 13px;
    font-weight: 600;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.qa-text {
    font-size: 15px;
    color: #333;
    line-height: 1.6;
    padding: 12px;
    background: #f8f9fa;
    border-radius: 6px;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.annotation-form {
    margin: 0;
    padding: 0;
}

.annotation-form-title {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin-bottom: 20px;
}

.annotation-field {
    margin-bottom: 24px;
}

.annotation-field-label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
    font-size: 14px;
}

.annotation-field-label .required {
    color: #dc3545;
    margin-left: 4px;
}

.annotation-field-description {
    font-size: 12px;
    color: #666;
    margin-bottom: 8px;
}

.annotation-input {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.3s ease;
    font-family: inherit;
}

.annotation-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.annotation-input textarea {
    resize: vertical;
    min-height: 100px;
}

.annotation-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.annotation-option {
    display: flex;
    align-items: center;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.annotation-option:hover {
    border-color: #667eea;
    background: #f8f9ff;
}

.annotation-option input[type="radio"],
.annotation-option input[type="checkbox"] {
    margin-right: 12px;
    cursor: pointer;
}

.annotation-option-label {
    flex: 1;
    font-size: 14px;
    color: #333;
}

.annotation-option-description {
    font-size: 12px;
    color: #666;
    margin-top: 4px;
}

.annotation-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid #e0e0e0;
}

.annotation-navigation {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid #e0e0e0;
}

.progress-info {
    padding: 12px;
    background: #e7f3ff;
    border-radius: 6px;
    margin-bottom: 16px;
    font-size: 14px;
    color: #0066cc;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #999;
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.empty-state-text {
    font-size: 16px;
}

.score-input-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.score-input {
    flex: 1;
}

.score-range {
    font-size: 12px;
    color: #666;
}

.qa-list-container {
    padding: 0;
}

.qa-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.qa-list-item {
    padding: 12px 16px;
    border-bottom: 1px solid #e0e0e0;
    cursor: pointer;
    transition: background-color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.qa-list-item:hover {
    background-color: #f8f9fa;
}

.qa-list-item.active {
    background-color: #e7f3ff;
    border-left: 3px solid #667eea;
}

.qa-list-item-content {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.qa-list-item-number {
    color: #999;
    font-size: 12px;
    margin-right: 8px;
    flex-shrink: 0;
}

.qa-list-item-question {
    color: #333;
    font-size: 14px;
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.qa-list-item-status {
    flex-shrink: 0;
}

.qa-list-empty {
    padding: 40px 20px;
    text-align: center;
    color: #999;
    font-style: italic;
    list-style: none;
}

.qa-list-loading {
    padding: 20px;
    text-align: center;
    color: #667eea;
    list-style: none;
    font-size: 14px;
    background: #f5f5f5;
    border-radius: 4px;
    margin: 10px;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}