/* ── Numeric Keypad ─────────────────────────────────── */
.numpad-container {
    margin-top: 1rem;
}
.numpad-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    max-width: 280px;
    margin: 0 auto;
}
.numpad-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 0;
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 0.75rem;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    transition: background 0.15s, transform 0.1s;
    -webkit-tap-highlight-color: transparent;
}
.numpad-btn:active {
    background: rgba(255,255,255,0.2);
    transform: scale(0.95);
}
.numpad-btn.numpad-action {
    font-size: 0.85rem;
    font-weight: 600;
    color: rgba(255,255,255,0.6);
    letter-spacing: normal;
}
.numpad-btn.numpad-action:active {
    color: #fff;
}