* {
    padding : 0;
    margin : 0;
    box-sizing : border-box;
    color-scheme: light dark;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}
.container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    padding: 20px;
    border-radius: 8px;
}
.time-input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}
.input-wrapper {
    flex: 1;
}
label {
    display: block;
    margin-bottom: 5px;
    font-size: 14px;
}
input[type="number"] {
    width: 100%;
    padding: 12px 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
.separator {
    display: flex;
    align-items: center;
    padding-top: 25px;
    font-size: 20px;
    color: #666;
}
.button-group {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}
button {
    padding: 15px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    flex: 1;
    border: none;
    transition: background-color 0.3s, transform 0.1s;
}
button:active {
    transform: scale(0.98);
}
.btn-calcular {
    color: #2196f3;
    background-color: transparent;    
}

.btn-limpiar {
    color: rgb(255, 81, 81);
    background-color: transparent;
}
#resultado {
    margin-top: 20px;
    padding: 15px;
    border-radius: 4px;
    text-align: center;
    font-size: 16px;
}
.time-group {
    margin-bottom: 20px;
}
.time-label {
    font-weight: bold;
    margin-bottom: 10px;
    color: #1976d2;
}