:root {
    /* prod list */
    --prod-bg: #f5f3ef;
    --prod-surface: #ffffff;
    --prod-border: #e2ddd6;
    --prod-text-secondary: #6b6460;
    --prod-text-primary: #1a1814;
    --prod-accent: #e8521a;
    --prod-accent-light: #fff0eb;
    --prod-sidebar-w: 220px;
    --prod-header-h: 56px;
    --prod-cat-bar-h: 52px;
    --prod-radius: 10px;
    --prod-shadow: 0 1px 3px rgba(0, 0, 0, .08), 0 4px 16px rgba(0, 0, 0, .06);
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    background: var(--prod-bg);
    color: var(--prod-text-primary);
    min-height: 100vh;
}

/* ── Prod ── */
/* ── Header ── */
.prod-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--prod-header-h);
    background: var(--prod-surface);
    border-bottom: 1px solid var(--prod-border);
    display: flex;
    align-items: center;
    padding: 0 20px;
    z-index: 100;
    gap: 12px;
}

.prod-logo {
    font-family: 'DM Mono', monospace;
    font-size: 17px;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--prod-text-primary);
    flex-shrink: 0;
}

.prod-logo span {
    color: var(--prod-accent);
}

.prod-header-search {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--prod-bg);
    border: 1px solid var(--prod-border);
    border-radius: 8px;
    padding: 6px 12px;
    font-size: 13px;
    color: var(--prod-text-secondary);
    cursor: pointer;
    transition: border-color .15s;
}

.prod-header-search:hover {
    border-color: #c9c4bc;
}

/* ── Layout ── */
.prod-layout {
    display: flex;
    align-items: flex-start;
    padding-top: var(--prod-header-h);
    min-height: 100vh;
    margin-left: unset !important;
    margin-right: unset !important;
    max-width: unset !important;
}

/* ── Sidebar (PC) ── */
.prod-sidebar {
    position: sticky;
    top: var(--prod-header-h);
    min-width: var(--prod-sidebar-w);
    width: var(--prod-sidebar-w);
    height: calc(100vh - var(--prod-header-h));
    overflow-y: auto;
    flex-shrink: 0;
    background: var(--prod-surface);
    border-right: 1px solid var(--prod-border);
    padding: 20px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--prod-border) transparent;
}

.prod-sidebar::-webkit-scrollbar {
    width: 4px;
}

.prod-sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.prod-sidebar::-webkit-scrollbar-thumb {
    background: var(--prod-border);
    border-radius: 4px;
}

.prod-sidebar-section-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--prod-text-secondary);
    padding: 16px 20px 8px;
}

.prod-sidebar-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 20px;
    font-size: 13.5px;
    font-weight: 400;
    color: var(--prod-text-secondary);
    cursor: pointer;
    transition: background .12s, color .12s;
    border-left: 3px solid transparent;
    text-decoration: none;
}

.prod-sidebar-item:hover {
    background: var(--prod-bg);
    color: var(--prod-text-primary);
}

.prod-sidebar-item.active {
    background: var(--prod-accent-light);
    color: var(--prod-accent);
    border-left-color: var(--prod-accent);
    font-weight: 500;
}

.prod-sidebar-item .icon {
    font-size: 16px;
    flex-shrink: 0;
    width: 20px;
    text-align: center;
}

.prod-sidebar-badge {
    margin-left: auto;
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    color: var(--prod-text-secondary);
}

/* ── Mobile category bar ── */
.prod-cat-bar {
    display: none;
    position: fixed;
    top: var(--prod-header-h);
    left: 0;
    right: 0;
    height: var(--prod-cat-bar-h);
    background: var(--prod-surface);
    border-bottom: 1px solid var(--prod-border);
    overflow-x: auto;
    overflow-y: hidden;
    white-space: nowrap;
    scrollbar-width: none;
    z-index: 90;
    -webkit-overflow-scrolling: touch;
}

.prod-cat-bar::-webkit-scrollbar {
    display: none;
}

.prod-cat-bar-inner {
    display: inline-flex;
    align-items: center;
    padding: 0 14px;
    gap: 6px;
    height: 100%;
}

.prod-cat-chip {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 500;
    color: var(--prod-text-secondary);
    background: var(--prod-bg);
    border: 1px solid var(--prod-border);
    border-radius: 999px;
    cursor: pointer;
    white-space: nowrap;
    transition: all .15s;
    flex-shrink: 0;
}

.prod-cat-chip:hover {
    border-color: #c9c4bc;
    color: var(--prod-text-primary);
}

.prod-cat-chip.active {
    background: var(--prod-accent);
    color: #fff;
    border-color: var(--prod-accent);
}

.prod-cat-chip .prod-chip-icon {
    font-size: 14px;
}

/* ── Main Content ── */
.prod-main {
    flex: 1;
    padding: 28px 28px 60px;
    min-width: 0;
}

.prod-page-title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -.03em;
    margin-bottom: 6px;
}

.prod-page-subtitle {
    font-size: 13px;
    color: var(--prod-text-secondary);
    margin-bottom: 24px;
}

/* Filter bar */
.prod-filter-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 22px;
    flex-wrap: wrap;
}

.prod-filter-chip {
    font-size: 12px;
    padding: 5px 12px;
    border: 1px solid var(--prod-border);
    border-radius: 999px;
    cursor: pointer;
    color: var(--prod-text-secondary);
    background: var(--prod-surface);
    transition: all .15s;
}

.prod-filter-chip:hover {
    border-color: #c9c4bc;
}

.prod-filter-chip.active {
    background: var(--prod-text-primary);
    color: #fff;
    border-color: var(--prod-text-primary);
}

.prod-filter-count {
    font-family: 'DM Mono', monospace;
    font-size: 12px;
    color: var(--prod-text-secondary);
    margin-left: auto;
}

/* ── Product Grid ── */
.prod-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

.prod-card {
    background: var(--prod-surface);
    border: 1px solid var(--prod-border);
    border-radius: var(--prod-radius);
    overflow: hidden;
    cursor: pointer;
    transition: transform .18s, box-shadow .18s, border-color .18s;
}

.prod-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--prod-shadow);
    border-color: #d0cbc4;
}

.prod-card-img {
    aspect-ratio: 1 / 1;
    background: var(--prod-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    position: relative;
    overflow: hidden;
}

/* Subtle gradient overlay on card image */
.prod-card-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(255, 255, 255, .15) 0%, transparent 60%);
    pointer-events: none;
}

.prod-card-new-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--prod-accent);
    color: #fff;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: .06em;
    padding: 3px 7px;
    border-radius: 4px;
    text-transform: uppercase;
}

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

.prod-card-name {
    font-size: 13px;
    font-weight: 500;
    line-height: 1.4;
    margin-bottom: 4px;
    color: var(--prod-text-primary);
}

.prod-card-sub {
    font-size: 11.5px;
    color: var(--prod-text-secondary);
    margin-bottom: 8px;
}

.prod-card-price {
    font-family: 'DM Mono', monospace;
    font-size: 14px;
    font-weight: 500;
    color: var(--prod-text-primary);
}

.prod-card-price .unit {
    font-size: 11px;
    color: var(--prod-text-secondary);
    margin-left: 2px;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .prod-sidebar {
        display: none;
    }

    .prod-cat-bar {
        display: block;
    }

    .prod-layout {
        padding-top: calc(var(--prod-header-h) + var(--prod-cat-bar-h));
    }

    .prod-main {
        margin-left: 0;
        padding: 20px 16px 60px;
    }

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

    .prod-page-title {
        font-size: 18px;
    }
}