body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background-color: #f4f7f6;
    color: #333;
    margin: 0;
    padding: 40px 20px;
    display: flex;
    justify-content: center;
}

/* Main White Box */
.container {
    background-color: #ffffff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    width: 100%;
    max-width: 650px;
}

/* Headers */
h1 {
    color: #2c3e50;
    margin-top: 0;
    font-size: 28px;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 15px;
}

p.description {
    color: #666;
    font-size: 15px;
    line-height: 1.5;
    margin-bottom: 30px;
}

/* Form Elements */
.form-group {
    margin-bottom: 25px;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: #4a5568;
}

textarea {
    width: 100%;
    height: 120px;
    padding: 12px;
    border: 1px solid #cbd5e0;
    border-radius: 6px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
    box-sizing: border-box;
    resize: vertical;
}

textarea:focus, select:focus, input[type="number"]:focus {
    outline: none;
    border-color: #3182ce;
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

input[type="file"] {
    font-size: 14px;
    color: #4a5568;
}

select, input[type="number"] {
    padding: 10px;
    border: 1px solid #cbd5e0;
    border-radius: 6px;
    font-size: 15px;
    background-color: #fff;
    width: 100%;
    box-sizing: border-box;
}

hr.divider {
    border: 0; 
    border-top: 1px solid #e2e8f0; 
    margin: 25px 0;
}

.section-title {
    color: #4a5568; 
    font-weight: bold; 
    margin-bottom: 15px;
}

.flex-row {
    display: flex; 
    gap: 15px; 
    margin-bottom: 15px;
}

.flex-col {
    flex: 1; 
    margin-bottom: 0;
}

.checkbox-group {
    display: flex; 
    align-items: center; 
    gap: 10px;
}

.checkbox-group label {
    margin: 0; 
    font-weight: normal; 
    color: #4a5568;
}

input[type="checkbox"] {
    width: 18px; 
    height: 18px;
    cursor: pointer;
}

/* The Run Button */
button {
    width: 100%;
    padding: 14px;
    background-color: #3182ce;
    color: white;
    font-size: 16px;
    font-weight: bold;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s ease;
    margin-top: 10px;
}

button:hover {
    background-color: #2b6cb0;
}

/* Error Message Box */
.error-message {
    background-color: #fed7d7;
    color: #c53030;
    padding: 15px;
    margin-bottom: 25px;
    border-radius: 6px;
    border: 1px solid #feb2b2;
    font-weight: 500;
    line-height: 1.4;
}

/* RESULTS PAGE SPECIFIC STYLES */

.container-results {
    max-width: 850px; /* Makes the box wider for alignments */
}

.info-panel {
    background-color: #ebf8ff;
    border-left: 4px solid #3182ce;
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 4px;
}

.info-panel p { 
    margin: 5px 0; 
    color: #2b6cb0; 
    font-size: 15px; 
}

.results-textarea {
    height: 400px;
    background-color: #f8fafc;
    white-space: pre;
    overflow: auto;
}

.button-group {
    display: flex;
    gap: 15px;
    margin-top: 25px;
}

.button-group a { 
    text-decoration: none; 
    flex: 1; 
}

.btn-download {
    background-color: #3182ce;
    color: white;
}

.btn-download:hover { 
    background-color: #2b6cb0; 
}

.btn-back {
    background-color: #e2e8f0;
    color: #4a5568;
}

.btn-back:hover { 
    background-color: #cbd5e0; 
}