.plagiarism-checker-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.plagiarism-checker-form textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    margin-bottom: 15px;
    min-height: 200px;
}

.plagiarism-checker-form .button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 12px 20px;
    font-size: 16px;
    cursor: pointer;
    border-radius: 4px;
    transition: background 0.3s;
}

.plagiarism-checker-form .button:hover {
    background: #45a049;
}

.options {
    margin-bottom: 15px;
}

.loading {
    text-align: center;
    margin: 20px 0;
}

.spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top: 4px solid #3498db;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 0 auto 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.results-container {
    margin-top: 30px;
    padding: 20px;
    background: white;
    border-radius: 4px;
    border: 1px solid #eee;
}

.result-section {
    margin-bottom: 20px;
}

.similarity-meter {
    height: 30px;
    background: #f0f0f0;
    border-radius: 4px;
    margin: 10px 0;
    position: relative;
}

.meter-bar {
    height: 100%;
    border-radius: 4px;
    background: #4CAF50;
    transition: width 0.5s;
}

.similarity-meter span {
    position: absolute;
    right: 10px;
    top: 5px;
    color: white;
    font-weight: bold;
}

.source-match {
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.warning-box {
    padding: 15px;
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    margin-top: 20px;
}