*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #fff;
    color: #1a1a18;
    min-height: 100vh;
    padding: 2rem 1rem;
}

:root {
    --color-background-primary: #ffffff;
    --color-background-secondary: #f1efe8;
    --color-text-primary: #1a1a18;
    --color-text-secondary: #5f5e5a;
    --color-text-tertiary: #888780;
    --color-border-tertiary: rgba(0, 0, 0, 0.12);
    --color-border-secondary: rgba(0, 0, 0, 0.22);
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-background-primary: #1e1e1c;
        --color-background-secondary: #2c2c2a;
        --color-text-primary: #f0ede6;
        --color-text-secondary: #a8a7a3;
        --color-text-tertiary: #6e6d69;
        --color-border-tertiary: rgba(255, 255, 255, 0.1);
        --color-border-secondary: rgba(255, 255, 255, 0.2);
    }

    body {
        background: #111110;
    }
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

h1 {
    font-size: 22px;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: 1.5rem;
}

input[type="text"] {
    padding: 8px 12px;
    border: 0.5px solid var(--color-border-secondary);
    border-radius: var(--border-radius-md);
    background: var(--color-background-primary);
    color: var(--color-text-primary);
    font-size: 14px;
    outline: none;
    width: 100%;
}

input[type="text"]:focus {
    border-color: rgba(0, 0, 0, 0.4);
}

.toolbar {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
}

.toolbar input {
    flex: 1;
    min-width: 140px;
}

.filter-tabs {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.tab {
    font-size: 13px;
    padding: 5px 12px;
    border-radius: var(--border-radius-md);
    border: 0.5px solid var(--color-border-secondary);
    background: transparent;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.15s;
}

.tab.active {
    background: var(--color-text-primary);
    color: var(--color-background-primary);
    border-color: transparent;
}

.tab:hover:not(.active) {
    background: var(--color-background-secondary);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
}

.card {
    background: var(--color-background-primary);
    border: 0.5px solid var(--color-border-tertiary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: border-color 0.15s;
    position: relative;
}

.card:hover {
    border-color: var(--color-border-secondary);
}

.card.sold-out {
    opacity: 0.72;
}

.img-wrap {
    width: 100%;
    aspect-ratio: 1;
    background: var(--color-background-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    /* 裁切中心點，可改 top / bottom */
}

.img-wrap .emoji {
    font-size: 52px;
    line-height: 1;
}

.sold-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: #E24B4A;
    color: #FCEBEB;
    font-size: 11px;
    font-weight: 500;
    padding: 3px 8px;
    border-radius: var(--border-radius-md);
    letter-spacing: 0.03em;
}

.low-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: #BA7517;
    color: #FAEEDA;
    font-size: 11px;
    font-weight: 500;
    padding: 3px 8px;
    border-radius: var(--border-radius-md);
}

.card-body {
    padding: 12px 14px 14px;
}

.cat-label {
    font-size: 11px;
    color: var(--color-text-tertiary);
    margin-bottom: 3px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.prod-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: 8px;
    line-height: 1.35;
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.price {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-primary);
}

.stock-info {
    font-size: 12px;
    color: var(--color-text-secondary);
}

.stock-info.zero {
    color: #E24B4A;
    font-weight: 500;
}

.stock-info.low {
    color: #BA7517;
}

.stock-info.normal {
    color: #28a745;
}

.summary {
    display: flex;
    gap: 10px;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.stat {
    background: var(--color-background-secondary);
    border-radius: var(--border-radius-md);
    padding: 10px 16px;
    flex: 1;
    min-width: 80px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color 0.15s, background 0.15s;
    user-select: none;
}

.stat:hover {
    background: var(--color-background-primary);
    border-color: var(--color-border-secondary);
}

.stat.active {
    background: var(--color-background-primary);
    border-color: var(--color-text-primary);
}

.stat.active-low {
    border-color: #BA7517 !important;
}

.stat.active-sold {
    border-color: #E24B4A !important;
}


.stat-num {
    font-size: 20px;
    font-weight: 500;
    color: var(--color-text-primary);
}

.stat-label {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-top: 1px;
}

.no-result {
    text-align: center;
    color: var(--color-text-tertiary);
    font-size: 14px;
    padding: 2rem 0;
    grid-column: 1 / -1;
}

.overlay {
    position: fixed;
    /* 或 absolute（相對父容器） */
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 14px;
    z-index: 999;
    color: #fff;
}

.spinner-ring {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.25);
    border-top-color: #fff;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}