/* ===== 全域共用樣式 ===== */
:root {
    --theme-color: #0d6efd;
    --sidebar-width: 250px;
}

/* Flash toast 動畫 */
.alert { animation: fadeIn 0.3s ease-in; }
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* 通用卡片 hover */
.card-hover:hover {
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transform: translateY(-2px);
    transition: all 0.2s ease;
}

/* 圖片自適應 */
.img-cover {
    object-fit: cover;
    width: 100%;
}

/* 價格標籤 */
.price-tag {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--theme-color);
}
.price-original {
    text-decoration: line-through;
    color: #999;
    font-size: 0.9rem;
}
.price-sale {
    color: #dc3545;
    font-weight: 700;
}

/* 狀態標籤 */
.badge-status { font-size: 0.85rem; }

/* ===== 表單輸入框強化顯示 ===== */
.form-control,
.form-select {
    border: 1px solid #9ca3af;
    background-color: #fdfdfe;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}
.input-group-text {
    border: 1px solid #9ca3af;
}
.form-control:hover,
.form-select:hover {
    border-color: #6c757d;
}
.form-control:focus,
.form-select:focus {
    border-color: var(--theme-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.18);
    background-color: #fff;
}
.form-control::placeholder {
    color: #a0a8b1;
    font-style: italic;
    opacity: 1;
}
.form-control:disabled,
.form-control[readonly],
.form-select:disabled {
    border-color: #ced4da;
    background-color: #e9ecef;
}

/* 表格優化 */
.table th { white-space: nowrap; }

/* Loading spinner */
.spinner-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(255,255,255,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}