:root {
    --bg: #f4f7fb;
    --panel: #fff;
    --text: #111827;
    --muted: #6b7280;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --border: #e5e7eb;
    --ok: #16a34a;
    --danger: #dc2626;
    --radius: 20px;
    --shadow: 0 18px 48px rgba(15, 23, 42, .08)
}

* {
    box-sizing: border-box
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, Segoe UI, sans-serif;
    background: radial-gradient(circle at top left, #dbeafe, transparent 32rem), var(--bg);
    color: var(--text)
}

a {
    color: inherit;
    text-decoration: none
}

input,
textarea,
select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 14px;
    font: inherit;
    background: #fff
}

textarea {
    resize: vertical
}

small,
.small-note {
    color: var(--muted)
}

hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 18px 0
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px clamp(18px, 4vw, 48px);
    background: rgba(255, 255, 255, .88);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border)
}

.brand {
    font-weight: 900;
    font-size: 1.25rem
}

.brand span {
    color: var(--primary)
}

nav {
    display: flex;
    gap: 16px;
    color: var(--muted)
}

.page {
    width: min(1180px, calc(100% - 32px));
    margin: 32px auto 72px
}

.page-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 24px
}

.page-head.small {
    max-width: 900px
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: .12em;
    color: var(--primary);
    font-weight: 800;
    font-size: .78rem;
    margin: 0 0 8px
}

h1 {
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 1;
    margin: 0 0 10px
}

h2 {
    margin: 0 0 12px
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    border-radius: 14px;
    padding: 11px 16px;
    background: #eef2ff;
    color: #1e3a8a;
    font-weight: 800;
    cursor: pointer
}

.btn.primary {
    background: var(--primary);
    color: white
}

.btn.primary:hover {
    background: var(--primary-dark)
}

.btn.ghost {
    background: #fff;
    border: 1px solid var(--border);
    color: var(--text)
}

.btn.danger {
    background: #fee2e2;
    color: #991b1b
}

.btn.small {
    padding: 8px 11px;
    border-radius: 11px;
    font-size: .9rem
}

.btn.full {
    width: 100%
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center
}

.actions.end {
    justify-content: flex-end
}

.actions.compact {
    gap: 6px
}

.actions.compact form {
    display: inline
}

.panel,
.card,
.auth-card,
.checkout-panel,
.success-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px
}

.auth-card {
    max-width: 460px;
    margin: 70px auto
}

.grid.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 18px
}

.card-top {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center
}

.badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 6px 10px;
    background: #eef2ff;
    color: #1e3a8a;
    font-size: .78rem;
    font-weight: 800
}

.badge.ok {
    background: #dcfce7;
    color: #166534
}

.badge.danger {
    background: #fee2e2;
    color: #991b1b
}

.badge.muted {
    background: #f3f4f6;
    color: #4b5563
}

.muted {
    color: var(--muted)
}

.meta {
    display: grid;
    gap: 5px;
    color: var(--muted);
    margin: 16px 0
}

.form-grid {
    display: grid;
    gap: 16px
}

.form-grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: 920px
}

.span2 {
    grid-column: 1/-1
}

.check {
    display: flex;
    align-items: center;
    gap: 10px
}

.check input {
    width: auto
}

.danger-zone {
    max-width: 920px;
    margin-top: 16px
}

.stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 20px
}

.stat {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 20px;
    box-shadow: var(--shadow)
}

.stat strong {
    display: block;
    font-size: 1.7rem
}

.stat span {
    color: var(--muted)
}

.section-head {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
    margin-bottom: 14px
}

.table-wrap {
    overflow: auto
}

table {
    width: 100%;
    border-collapse: collapse
}

th,
td {
    text-align: left;
    padding: 13px;
    border-bottom: 1px solid var(--border);
    vertical-align: top
}

th {
    font-size: .82rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--muted)
}

tfoot th {
    font-size: 1rem;
    color: var(--text)
}

.toolbar {
    display: flex;
    gap: 10px;
    margin-bottom: 16px
}

.toolbar input {
    max-width: 360px
}

.toolbar select {
    max-width: 220px
}

.flash-wrap {
    display: grid;
    gap: 10px;
    margin-bottom: 18px
}

.flash {
    padding: 13px 16px;
    border-radius: 14px;
    background: #eef2ff;
    border: 1px solid #c7d2fe
}

.flash.success {
    background: #dcfce7;
    border-color: #bbf7d0
}

.flash.danger {
    background: #fee2e2;
    border-color: #fecaca
}

.flash.warning {
    background: #fef3c7;
    border-color: #fde68a
}

.empty {
    background: #fff;
    border: 1px dashed var(--border);
    border-radius: 18px;
    padding: 24px;
    color: var(--muted)
}

.public-hero {
    background: linear-gradient(135deg, #111827, #2563eb);
    color: #fff;
    border-radius: 30px;
    padding: clamp(28px, 5vw, 56px);
    margin-bottom: 24px;
    box-shadow: var(--shadow)
}

.public-hero .eyebrow {
    color: #bfdbfe
}

.public-hero p {
    max-width: 760px
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px
}

.hero-meta span {
    background: rgba(255, 255, 255, .14);
    border: 1px solid rgba(255, 255, 255, .22);
    padding: 8px 12px;
    border-radius: 999px
}

.shop-layout {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 22px;
    align-items: start
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px
}

.product-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow)
}

.product-card img,
.product-placeholder {
    height: 180px;
    width: 100%;
    object-fit: cover;
    background: linear-gradient(135deg, #dbeafe, #fff);
    display: grid;
    place-items: center;
    font-size: 4rem;
    font-weight: 900;
    color: #2563eb
}

.product-body {
    padding: 18px
}

.qty-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 14px
}

.qty-row input {
    text-align: center
}

.qty-btn {
    width: 42px;
    height: 42px;
    border: none;
    border-radius: 13px;
    background: #eef2ff;
    color: #1e3a8a;
    font-weight: 900;
    font-size: 1.25rem;
    cursor: pointer
}

.checkout-panel {
    position: sticky;
    top: 92px;
    display: grid;
    gap: 12px
}

.cart-summary {
    display: grid;
    gap: 8px;
    color: var(--muted)
}

.cart-line,
.line-item,
.total-line {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center
}

.total-line {
    font-size: 1.1rem
}

.total-line.big {
    font-size: 1.35rem;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border)
}

.success-card {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 22px
}

.order-number {
    display: inline-flex;
    background: #111827;
    color: #fff;
    border-radius: 16px;
    padding: 14px 18px;
    font-weight: 900;
    letter-spacing: .06em
}

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px
}

.qr {
    width: 180px;
    max-width: 100%;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 10px;
    background: #fff
}

.status-line {
    display: flex;
    gap: 8px;
    margin: 16px 0
}

.payment-box .qr {
    display: block;
    margin-top: 14px
}

@media(max-width:860px) {

    .page-head,
    .topbar {
        flex-direction: column;
        align-items: flex-start
    }

    .shop-layout,
    .detail-grid,
    .form-grid.two {
        grid-template-columns: 1fr
    }

    .checkout-panel {
        position: static
    }

    .stats {
        grid-template-columns: repeat(2, 1fr)
    }

    .toolbar {
        flex-direction: column
    }

    .toolbar input,
    .toolbar select {
        max-width: none
    }

    nav {
        flex-wrap: wrap
    }
}

@media(max-width:520px) {
    .stats {
        grid-template-columns: 1fr
    }

    .page {
        width: min(100% - 20px, 1180px);
        margin-top: 18px
    }

    .panel,
    .card,
    .auth-card,
    .checkout-panel,
    .success-card {
        padding: 18px
    }
}

.category-accordion-wrap {
    display: grid;
    gap: 18px;
}

.category-accordion {
    border-radius: 24px;
    overflow: hidden;
}

.category-accordion-header {
    width: 100%;
    border: 1px solid var(--border);
    background: #fff;
    border-radius: 20px;
    padding: 18px 22px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    box-shadow: var(--shadow);
    text-align: left;
}

.category-accordion-header span {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 1.2rem;
    font-weight: 900;
    color: var(--text);
}

.category-accordion-header small {
    font-size: .85rem;
    font-weight: 600;
    color: var(--muted);
}

.accordion-icon {
    width: 34px;
    height: 34px;
    border-radius: 999px;
    background: #eef2ff;
    color: #1e3a8a;
    display: grid;
    place-items: center;
    font-size: 1.4rem;
}

.category-accordion-body {
    display: none;
    padding-top: 18px;
}

.category-accordion.is-open .category-accordion-body {
    display: block;
}

.import-box {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: flex-end;
    padding: 18px;
    border: 1px dashed var(--border);
    border-radius: 18px;
    background: #f8fafc;
    margin-bottom: 18px;
}

.import-box h3 {
    margin: 0 0 6px;
}

.import-form {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.import-form input[type="file"] {
    max-width: 280px;
}

@media(max-width: 860px) {
    .import-box {
        flex-direction: column;
        align-items: stretch;
    }

    .import-form input[type="file"] {
        max-width: none;
    }
}

.theme-color-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
}

.color-card {
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 14px;
    background: #fff;
    box-shadow: var(--shadow);
    display: grid;
    gap: 10px;
}

.color-card span {
    font-weight: 800;
}

.color-card input[type="color"] {
    width: 100%;
    height: 54px;
    padding: 4px;
    border-radius: 14px;
    cursor: pointer;
}