static/styles.css

body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
}

header {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #343a40;
    color: white;
    width: 100%;
    padding: 20px 0;
}

.calculator-form {
    width: 100%;
    display: flex;
    flex-direction: column;
}

#logo {
    height: 50px;
    margin-right: 20px;
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 30px;
    width: 100%;
    max-width: 600px;
    padding: 20px;
    background-color: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

.add-cable-section,
.existing-cables-section {
    width: 100%;
    margin-bottom: 30px;
}

.add-cable-section h2,
.existing-cables-section h2 {
    margin-bottom: 20px;
    color: #343a40;
}

.form-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 15px;
}

.form-row label {
    flex-basis: 30%;
    font-weight: bold;
}

.form-row input {
    flex-basis: 65%;
    padding: 8px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 8px;
}

.form-row select {
    flex-basis: 65%;
    padding: 8px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 8px;
}

.btn {
    padding: 8px 16px;
    font-size: 14px;
    cursor: pointer;
    border: none;
    color: white;
    border-radius: 4px;
}

.btn-add {
    background-color: #28a745;
    width: 100%;
}

.btn-save {
    background-color: #007bff;
    margin-right: 5px;
}

.btn-delete {
    background-color: #dc3545;
}

.btn-group {
    display: flex;
    justify-content: flex-end;
    margin-top: 10px;
}

.section-divider {
    margin: 40px 0;
    border: 0;
    border-top: 2px solid #dee2e6;
    width: 100%;
}

.cable-divider {
    margin: 20px 0;
    border: 0;
    border-top: 1px solid #dee2e6;
    width: 100%;
}

.btn-back {
    background-color: #007bff;
    color: white;
    padding: 10px 20px;
    font-size: 16px;
    text-align: center;
    text-decoration: none;
    margin-top: 30px;
    display: inline-block;
    border-radius: 5px;
    width: 100%;
}

.btn-back:hover {
    background-color: #0056b3;
}
.btn-calculate {
    background-color: #6c757d; /* Disabled state */
    color: white;
    padding: 10px 20px;
    font-size: 18px;
    border: none;
    cursor: not-allowed;
    border-radius: 4px;
    margin-top: 20px;
    width: 100%;
    text-align: center;
    transition: background-color 0.3s ease;
}

.btn-calculate.enabled {
    background-color: #28a745; /* Enabled state */
    cursor: pointer;
}

.btn-calculate:hover.enabled {
    background-color: #218838;
}

.result-display {
    margin-top: 30px;
    font-size: 24px;
    color: #28a745;
    text-align: center;
    padding: 20px;
    border-top: 2px solid #dee2e6;
    width: 100%;
}