.std-calc-container * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.std-calc-container {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    /*background-color: #f5f7fa;*/
    color: #333;
    line-height: 1.6;
    padding: 1px;
    /*max-width: 1200px;*/
    margin: 0 auto;
}

.std-calc-card {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 20px;
    margin-bottom: 20px;
}

.std-calc-input-section {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 768px) {
    .std-calc-input-section {
        grid-template-columns: 2fr 1fr;
    }
}

.std-calc-input-group {
    margin-bottom: 15px;
}

.std-calc-input-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #2c3e50;
}

.std-calc-input-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    resize: vertical;
    min-height: 100px;
    font-size: 16px;
}

.std-calc-radio-group {
    display: flex;
    gap: 20px;
    margin: 15px 0;
}

.std-calc-radio-option {
    display: flex;
    align-items: center;
    gap: 5px;
}

.std-calc-button-group {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.std-calc-button-group button {
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.std-calc-btn-calculate {
    background-color: #3498db;
    color: white;
}

.std-calc-btn-calculate:hover {
    background-color: #2980b9;
}

.std-calc-btn-clear {
    background-color: #e74c3c;
    color: white;
}

.std-calc-btn-clear:hover {
    background-color: #c0392b;
}

.std-calc-results-section {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 992px) {
    .std-calc-results-section {
        grid-template-columns: 1fr 1fr;
    }
}

.std-calc-result-card {
    text-align: center;
    padding: 15px;
}

.std-calc-result-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c3e50;
    margin: 10px 0;
}

.std-calc-stat-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.std-calc-stat-card {
    padding: 15px;
    text-align: center;
}

.std-calc-stat-value {
    font-size: 1.8rem;
    font-weight: 600;
    color: #3498db;
}

.std-calc-container table {
    width: 100%;
    border-collapse: collapse;
    margin: 15px 0;
}

.std-calc-container th, 
.std-calc-container td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.std-calc-container th {
    background-color: #f8f9fa;
    font-weight: 600;
}

.std-calc-container tr:hover {
    background-color: #f1f7fd;
}

.std-calc-steps-container {
    margin-top: 15px;
}

.std-calc-step {
    margin-bottom: 10px;
    padding: 10px;
    background-color: #f8f9fa;
    border-left: 4px solid #3498db;
    border-radius: 0 4px 4px 0;
}

.std-calc-confidence-table {
    margin-top: 20px;
}

.std-calc-frequency-table {
    margin-top: 20px;
}

.std-calc-hidden {
    display: none;
}

.std-calc-error {
    color: #e74c3c;
    font-weight: 600;
    margin-top: 10px;
}

.std-calc-icon {
    font-size: 1.2rem;
}