/* Advanced Set Theory Calculator Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body .advance-set-theory-calculator {
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.advance-set-theory-calculator .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 20px;
}

@media (max-width: 768px) {
    .advance-set-theory-calculator .container {
        grid-template-columns: 1fr;
    }
}

.advance-set-theory-calculator .panel {
    background: white;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.advance-set-theory-calculator .input-group {
    margin-bottom: 20px;
}

.advance-set-theory-calculator label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #2c3e50;
}

.advance-set-theory-calculator input, 
.advance-set-theory-calculator select, 
.advance-set-theory-calculator button {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
}

.advance-set-theory-calculator input:focus, 
.advance-set-theory-calculator select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.advance-set-theory-calculator .set-inputs {
    max-height: 400px;
    overflow-y: auto;
    padding-right: 10px;
}

.advance-set-theory-calculator .set-item {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    gap: 10px;
}

.advance-set-theory-calculator .set-label {
    min-width: 40px;
    font-weight: bold;
    color: #2c3e50;
}

.advance-set-theory-calculator .set-input {
    flex: 1;
}

.advance-set-theory-calculator .remove-set {
    background: #e74c3c;
    color: white;
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.advance-set-theory-calculator .remove-set:hover {
    background: #c0392b;
}

.advance-set-theory-calculator .button-group {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.advance-set-theory-calculator .btn {
    padding: 12px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    font-size: 16px;
}

.advance-set-theory-calculator .btn-primary {
    background-color: #3498db;
    color: white;
    flex: 2;
}

.advance-set-theory-calculator .btn-primary:hover {
    background-color: #2980b9;
}

.advance-set-theory-calculator .btn-secondary {
    background-color: #95a5a6;
    color: white;
    flex: 1;
}

.advance-set-theory-calculator .btn-secondary:hover {
    background-color: #7f8c8d;
}

.advance-set-theory-calculator .btn-add {
    background-color: #2ecc71;
    color: white;
    margin-bottom: 20px;
}

.advance-set-theory-calculator .btn-add:hover {
    background-color: #27ae60;
}

.advance-set-theory-calculator .results-container {
    margin-top: 30px;
    padding: 25px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.advance-set-theory-calculator .results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.advance-set-theory-calculator .results-title {
    font-size: 1.5rem;
    color: #2c3e50;
}

.advance-set-theory-calculator .export-btn {
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 6px;
    padding: 8px 15px;
    font-size: 12px;
    height: 28px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.advance-set-theory-calculator .export-btn:disabled {
    background-color: #95a5a6;
    cursor: not-allowed;
}

.advance-set-theory-calculator .result-section {
    margin-bottom: 25px;
}

.advance-set-theory-calculator .result-section h3 {
    margin-bottom: 10px;
    color: #2c3e50;
    font-size: 1.2rem;
}

.advance-set-theory-calculator .result-set {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 6px;
    border-left: 4px solid #3498db;
    font-family: 'Courier New', monospace;
    white-space: pre-wrap;
    word-break: break-all;
}

.advance-set-theory-calculator .venn-container {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

.advance-set-theory-calculator .venn-diagram {
    width: 100%;
    max-width: 500px;
    height: 300px;
    position: relative;
}

.advance-set-theory-calculator .comment-box {
    background: #e8f4fc;
    padding: 15px;
    border-radius: 6px;
    border-left: 4px solid #3498db;
    margin-top: 20px;
}

.advance-set-theory-calculator .error-message {
    background: #fde8e8;
    color: #c0392b;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    border-left: 4px solid #e74c3c;
}

.advance-set-theory-calculator .info-message {
    background: #e8f4fc;
    color: #2980b9;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    border-left: 4px solid #3498db;
}

.advance-set-theory-calculator .step-breakdown {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 6px;
    margin-top: 15px;
}

.advance-set-theory-calculator .step-breakdown ol {
    padding-left: 20px;
}

.advance-set-theory-calculator .step-breakdown li {
    margin-bottom: 8px;
}