.timestamp-converter {
    display: grid;
    gap: 25px;
}
.ts-input {
    width: 100%;
    padding: 10px;
    font-size: 1.2rem;
    font-family: 'Courier New', Courier, monospace;
    border: 1px solid #ccc;
    border-radius: 5px;
}
.ts-input.invalid-range {
    color: #d9534f;
    font-weight: bold;
}
.timezone-selector {
    display: flex;
    gap: 20px;
    margin-bottom: 10px;
}
.timezone-selector label {
    display: flex;
    align-items: center;
    cursor: pointer;
}
.timezone-selector input {
    margin-right: 5px;
}
.datetime-inputs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0 10px;
}
.datetime-inputs input {
    padding: 10px;
    margin-bottom: 5px;
    font-size: 1.1rem;
    font-family: 'Courier New', Courier, monospace;
    border: 1px solid #ccc;
    border-radius: 5px;
    text-align: center;
}
.datetime-inputs #dd,
.datetime-inputs #ss {
    margin-right: 15px
}
.datetime-inputs #yyyy { width: 6em; }
.datetime-inputs #mm,
.datetime-inputs #dd,
.datetime-inputs #hh,
.datetime-inputs #min,
.datetime-inputs #ss { width: 4em; }
.datetime-inputs #ms { width: 5em; }
.datetime-inputs span {
    font-size: 1.2rem;
    color: #888;
}