.input-row {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-size: 0.9em;
    color: #555;
}

#result {
    margin-top: 20px;
    padding: 15px;
    border-radius: 4px;
    font-size: 1.1em;
}

.error {
    color: #d32f2f;
    margin-top: 10px;
    padding: 10px;
    background: #ffebee;
    border-radius: 4px;
}

button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background: #45a049;
}

.date-group {
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
    padding: var(--space-xs) var(--space-sm);
}

.input-field {
    border: 1px solid var(--border-color);
    padding: 5px;
    text-align: center;
    border-radius: 4px;
    width: 8rem;
}

input[type="text"] {
    text-align: center;
    font-size: 2.5rem;
    border: none !important;
    background: none !important;
}

input[type=text]:focus {
    background-color: none !important;
    border-color: none !important;
    box-shadow: none !important;
}

input::placeholder {
    color: #5f5e5e;
    /* Light gray color */
    opacity: 1;
    /* Firefox reduces opacity by default */
    font-size: 2rem;
}

/* For older browsers */
input::-webkit-input-placeholder {
    /* Chrome/Opera/Safari */
    color: #999;
}

input::-moz-placeholder {
    /* Firefox 19+ */
    color: #999;
    opacity: 1;
}

input:-ms-input-placeholder {
    /* IE 10+ */
    color: #999;
}

input:focus::placeholder {
    color: transparent;
    /* Hide placeholder on focus */
}

@media (max-width: 768px) {
    .input-row {
        gap: 6px;
    }

    .input-field {
        width: 5.5rem;
        padding: 4px;
    }

    .input-field label {
        margin-bottom: 0;
    }

    input[type="text"] {
        font-size: 1.5rem;
        height: unset !important;
        margin-top: 0 !important;
        padding-top: 0 !important;
    }

    input::placeholder {
        font-size: 1.2rem;
    }
}