.umt-calculator-wrapper {
    --umt-primary: #002D72;
    --umt-secondary: #0056b3;
    --umt-bg: #f4f7f6;
    --umt-card-bg: #ffffff;
    --umt-text: #333333;
    --umt-border: #e0e0e0;
    --umt-danger: #e63946;
    --umt-success: #2a9d8f;
    --umt-radius: 8px;
    font-family: 'Inter', sans-serif;
    background-color: var(--umt-bg);
    padding: 20px;
    border-radius: var(--umt-radius);
    max-width: 800px;
    margin: 20px auto;
}

.umt-container * {
    box-sizing: border-box;
}

.umt-header {
    text-align: center;
    margin-bottom: 30px;
}

.umt-header h2 {
    color: var(--umt-primary);
    margin-bottom: 10px;
}

.umt-card {
    background-color: var(--umt-card-bg);
    border-radius: var(--umt-radius);
    padding: 25px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    margin-bottom: 25px;
}

.umt-card h3 {
    color: var(--umt-primary);
    margin-top: 0;
    margin-bottom: 15px;
    border-bottom: 1px solid var(--umt-border);
    padding-bottom: 10px;
}

.courses-header,
.course-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 0.5fr;
    gap: 10px;
    margin-bottom: 10px;
    align-items: center;
}

.courses-header {
    font-weight: 600;
    color: #666;
    font-size: 0.9em;
}

.umt-calculator-wrapper input[type="text"],
.umt-calculator-wrapper input[type="number"],
.umt-calculator-wrapper select {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--umt-border);
    border-radius: 4px;
    font-size: 1rem;
}

.umt-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s;
}

.umt-btn.primary {
    background-color: var(--umt-primary);
    color: white;
}

.umt-btn.primary:hover {
    background-color: var(--umt-secondary);
}

.umt-btn.danger {
    background-color: transparent;
    border: 1px solid var(--umt-danger);
    color: var(--umt-danger);
}

.umt-btn.danger:hover {
    background-color: #fff1f2;
}

.remove-btn {
    background: none;
    border: none;
    color: var(--umt-danger);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}

.result {
    margin-top: 20px;
    padding: 15px;
    background-color: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: var(--umt-radius);
    text-align: center;
    color: var(--umt-success);
}

.result.hidden {
    display: none;
}

@media (max-width: 600px) {
    .courses-header {
        display: none;
    }

    .course-row {
        grid-template-columns: 1fr;
        background: #f9f9f9;
        padding: 10px;
        border-radius: 4px;
    }
}