.calculator-box {
    background: #ffffff; /* solid white background */
    border-radius: 12px;
    padding: 30px;
    max-width: 700px;
    width: 100%;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1); /* subtle shadow */
}

h1 {
    text-align: center;
    font-weight: bold;
    margin-bottom: 20px;
    color: #212529; /* dark text for readability */
}


.time-box {
    background-color: #f1f3f5; /* light gray box */
    color: #212529;
    padding: 10px 15px;
    border-radius: 8px;
    margin: 5px 0;
    display: inline-block;
    font-weight: 500;
    text-align: center;
}

.btn-custom {
    background-color: #ff9800; /* warm orange */
    color: white;
    font-weight: 500;
    border: none;
    padding: 10px 18px;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.btn-custom:hover {
    background-color: #e68900;
}


.btn-outline-light {
    color: #212529 !important;
    border: 2px solid #212529 !important;
    background-color: transparent;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-outline-light:hover {
    background-color: #212529 !important;
    color: #ffffff !important;
}

/* Suggested times styling */
.time-box {
    background-color: #f8f9fa; /* light gray background */
    color: #212529;
    padding: 12px 18px;
    margin: 6px;
    display: inline-block;
    font-size: 1.1rem;
    font-weight: 500;
    border-radius: 8px;
    border: 1px solid #dee2e6;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.time-box:hover {
    background-color: #007bff;
    color: #ffffff;
    border-color: #007bff;
    box-shadow: 0 3px 10px rgba(0,0,0,0.15);
}