.page-timestamp-calc {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 2rem;
}

.timestamp-calc-card {
    width: min(720px, 100%);
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
    padding: 1.5rem;
    border-radius: 0.9rem;
    background: var(--color-background-secondary);
    box-shadow: 0 2px 10px var(--color-shadow);
}

.timestamp-calc-card h1 {
    margin: 0;
}

.timestamp-calc-preview {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.8rem 0.9rem;
    border-left: 3px solid var(--color-primary);
    border-radius: 0.5rem;
    background: rgba(255, 255, 255, 0.04);
}

.timestamp-calc-preview small {
    color: var(--color-on-background-secondary);
}

.timestamp-calc-card input {
    padding: 0.7rem 0.8rem;
    border-radius: 0.5rem;
    border: 1px solid var(--color-border);
    background: var(--color-background);
    color: var(--color-on-background);
}

.timestamp-calc-success {
    color: #6bff99;
    font-weight: 600;
}

.timestamp-calc-error {
    color: #ff6b6b;
    font-weight: 600;
}