.cobra-calculator-container {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    max-width: 600px;
    margin: 2rem auto;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.header {
    background: #005A9C;
    color: #ffffff;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h2 {
    margin: 0;
    font-size: 1.5rem;
}

#clock {
    font-size: 1.1rem;
    font-weight: bold;
}

.calculator-body {
    padding: 1.5rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .calculator-body {
        grid-template-columns: 1fr 1fr;
    }
}

.input-section .form-group {
    margin-bottom: 1.25rem;
}

.input-section label {
    display: block;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 600;
}

.input-section input[type="number"],
.input-section select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1rem;
    box-sizing: border-box;
}

.input-section input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
}

.output-section {
    background: #f0f8ff;
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
}

.output-section h4 {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    color: #005A9C;
}

.result {
    font-size: 2.5rem;
    font-weight: bold;
    color: #004071;
    margin-bottom: 1rem;
}

.breakdown p {
    margin: 0.5rem 0;
    font-size: 1rem;
    color: #555;
}