:root {
    --rkl-primary-color: #4285f4;
    --rkl-secondary-color: #f1f1f1;
    --rkl-text-color: #333;
    --rkl-bg-color: #fff;
    --rkl-border-color: #ddd;
    --rkl-shadow-color: rgba(0, 0, 0, 0.1);
    --rkl-success-color: #4caf50;
    --rkl-warning-color: #ff9800;
    --rkl-error-color: #f44336;
    --rkl-info-color: #2196f3;
}

.rkl-dark-mode {
    --rkl-primary-color: #4a6fa5;
    --rkl-secondary-color: #424242;
    --rkl-text-color: #f1f1f1;
    --rkl-bg-color: #121212;
    --rkl-border-color: #333;
    --rkl-shadow-color: rgba(255, 255, 255, 0.1);
    --rkl-success-color: #81c784;
    --rkl-warning-color: #ffb74d;
    --rkl-error-color: #e57373;
    --rkl-info-color: #64b5f6;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    transition: background-color 0.3s, color 0.3s;
}

.rkl-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.rkl-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 20px;
}

.rkl-title {
    color: var(--rkl-primary-color);
    font-size: 2rem;
}

.rkl-controls {
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
}

.rkl-theme-toggle {
    background: var(--rkl-secondary-color);
    border: none;
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--rkl-text-color);
}

.rkl-theme-toggle:hover {
    opacity: 0.9;
}

.rkl-tool-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

@media (max-width: 900px) {
    .rkl-tool-container {
        grid-template-columns: 1fr;
    }
}

.rkl-input-section, .rkl-output-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.rkl-textarea {
    width: 100%;
    min-height: 300px;
    padding: 15px;
    border: 1px solid var(--rkl-border-color);
    border-radius: 8px;
    resize: vertical;
    font-size: 16px;
    background-color: var(--rkl-bg-color);
    color: var(--rkl-text-color);
}

.rkl-button-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.rkl-button {
    padding: 10px 15px;
    background-color: var(--rkl-primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.rkl-button:hover {
    opacity: 0.9;
}

.rkl-button-secondary {
    background-color: var(--rkl-secondary-color);
    color: var(--rkl-text-color);
}

.rkl-button-success {
    background-color: var(--rkl-success-color);
}

.rkl-button-warning {
    background-color: var(--rkl-warning-color);
}

.rkl-button-error {
    background-color: var(--rkl-error-color);
}

.rkl-button-info {
    background-color: var(--rkl-info-color);
}

.rkl-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.rkl-stat-box {
    background-color: var(--rkl-secondary-color);
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    min-width: 120px;
}

.rkl-stat-box h3 {
    font-size: 14px;
    margin-bottom: 5px;
    color: var(--rkl-text-color);
}

.rkl-stat-box p {
    font-size: 24px;
    font-weight: bold;
    color: var(--rkl-primary-color);
}

.rkl-feature-section {
    margin-top: 20px;
    border-top: 1px solid var(--rkl-border-color);
    padding-top: 20px;
}

.rkl-feature-title {
    margin-bottom: 15px;
    color: var(--rkl-primary-color);
    font-size: 1.2rem;
}

.rkl-case-options {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 10px;
    margin-bottom: 15px;
}

.rkl-case-option {
    padding: 10px;
    background-color: var(--rkl-secondary-color);
    border-radius: 5px;
    cursor: pointer;
    text-align: center;
}

.rkl-case-option:hover {
    background-color: var(--rkl-primary-color);
    color: white;
}

.rkl-case-option-active {
    background-color: var(--rkl-primary-color);
    color: white;
}

.rkl-output-preview {
    min-height: 300px;
    padding: 15px;
    border: 1px solid var(--rkl-border-color);
    border-radius: 8px;
    background-color: var(--rkl-secondary-color);
    overflow-y: auto;
    white-space: pre-wrap;
}

.rkl-tabs {
    display: flex;
    border-bottom: 1px solid var(--rkl-border-color);
    margin-bottom: 15px;
}

.rkl-tab {
    padding: 10px 15px;
    cursor: pointer;
    border-bottom: 3px solid transparent;
}

.rkl-tab-active {
    border-bottom-color: var(--rkl-primary-color);
    font-weight: bold;
}

.rkl-tab-content {
    display: none;
}

.rkl-tab-content-active {
    display: block;
}

.rkl-keyword-highlight {
    background-color: rgba(255, 255, 0, 0.3);
    padding: 2px;
    border-radius: 3px;
}

.rkl-sentiment-positive {
    color: var(--rkl-success-color);
}

.rkl-sentiment-neutral {
    color: var(--rkl-warning-color);
}

.rkl-sentiment-negative {
    color: var(--rkl-error-color);
}

.rkl-progress-container {
    width: 100%;
    background-color: var(--rkl-secondary-color);
    border-radius: 5px;
    margin: 10px 0;
}

.rkl-progress-bar {
    height: 10px;
    border-radius: 5px;
    background-color: var(--rkl-primary-color);
    width: 0%;
}

.rkl-checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 10px 0;
}

.rkl-checkbox-label {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.rkl-slider {
    width: 100%;
    margin: 15px 0;
}

.rkl-history-item {
    padding: 10px;
    border-bottom: 1px solid var(--rkl-border-color);
    cursor: pointer;
}

.rkl-history-item:hover {
    background-color: var(--rkl-secondary-color);
}

.rkl-tooltip {
    position: relative;
    display: inline-block;
}

.rkl-tooltip .rkl-tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: var(--rkl-secondary-color);
    color: var(--rkl-text-color);
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
}

.rkl-tooltip:hover .rkl-tooltiptext {
    visibility: visible;
    opacity: 1;
}

.rkl-badge {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 10px;
    font-size: 12px;
    background-color: var(--rkl-primary-color);
    color: white;
    margin-left: 5px;
}

.rkl-export-options {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.rkl-export-option {
    padding: 8px 12px;
    background-color: var(--rkl-secondary-color);
    border-radius: 5px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
}

.rkl-export-option:hover {
    background-color: var(--rkl-primary-color);
    color: white;
}