/* ============================================
   Game Panel — 数字入力パネル（テンキー）
   ============================================ */

.number-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px 20px;
    background: linear-gradient(to top, var(--bg-secondary) 80%, transparent);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    pointer-events: none;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: 100;
}

.number-panel.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.numpad {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 8px;
    width: 100%;
    max-width: 540px; /* 10個のボタンが並べる幅 */
}

.num-btn {
    width: 44px;
    height: 44px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: var(--font-title);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.num-btn.has-memo1 {
    background-color: #000 !important;
    color: #fff !important;
    border-color: #444;
}

.num-btn.has-memo2 {
    background-color: var(--danger) !important;
    color: #fff !important;
    border-color: #fa8072;
}

.num-btn.has-memo1.has-memo2 {
    background: linear-gradient(135deg, #000 50%, var(--danger) 50%) !important;
    color: #fff !important;
}

/* --- Eraser (X) Styling --- */
.num-btn.-zero {
    color: var(--danger);
    border-color: rgba(255, 82, 82, 0.4);
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-bottom: 2px; /* ✕の垂直位置微調整 */
}

.num-btn.-zero:hover {
    border-color: var(--danger);
    background: rgba(255, 82, 82, 0.1);
    box-shadow: 0 0 15px rgba(255, 82, 82, 0.3);
    transform: scale(1.05);
}