:root {
    color-scheme: light;
    font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    color: #172033;
    background: #f4f7fb;
    --primary: #2369e8;
    --primary-dark: #1552bd;
    --border: #dfe6f0;
    --muted: #68758a;
    --surface: #ffffff;
    --success: #138a59;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: #f4f7fb; }
a { color: inherit; }
h1, h2, p { margin-top: 0; }
button, input, select, textarea { font: inherit; }

.public-shell, .auth-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    background: radial-gradient(circle at top, #eef5ff 0, #f6f8fc 48%, #eef2f7 100%);
}

.hero-card, .auth-card, .panel, .metric-card {
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: 0 18px 50px rgba(34, 56, 91, .08);
}

.hero-card { max-width: 680px; padding: 56px; border-radius: 24px; }
.auth-card { width: min(100%, 430px); padding: 38px; border-radius: 20px; }
.brand-mark {
    width: 54px; height: 54px; display: grid; place-items: center;
    border-radius: 16px; background: var(--primary); color: #fff;
    font-size: 26px; font-weight: 800; margin-bottom: 24px;
}
.brand-mark.small { width: 36px; height: 36px; border-radius: 11px; margin: 0; font-size: 18px; }
.eyebrow { color: var(--primary); font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.muted, .form-help { color: var(--muted); line-height: 1.7; }
.status-row { display: flex; align-items: center; gap: 9px; margin-top: 28px; color: var(--success); font-weight: 700; }
.status-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--success); }

.form-stack { display: grid; gap: 20px; margin-top: 28px; }
.form-stack label { display: grid; gap: 8px; font-size: 14px; font-weight: 700; }
input, select, textarea {
    width: 100%; border: 1px solid var(--border); border-radius: 10px;
    padding: 12px 14px; font: inherit; background: #fff; outline: none;
}
textarea { resize: vertical; line-height: 1.6; }
input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(35, 105, 232, .12); }
.field-error { color: #c73535; font-weight: 500; }
.primary-button, .secondary-button, .danger-button, .logout-button {
    border: 0; border-radius: 10px; padding: 12px 18px; font: inherit;
    font-weight: 700; cursor: pointer;
}
.primary-button { color: #fff; background: var(--primary); }
.primary-button:hover { background: var(--primary-dark); }
.secondary-button { color: #25344b; background: #edf2f8; }
.danger-button { color: #fff; background: #b62f3b; }
.button-link { display: inline-flex; align-items: center; justify-content: center; text-decoration: none; }

.admin-shell { min-height: 100vh; display: grid; grid-template-columns: 240px minmax(0, 1fr); }
.sidebar { background: #12213a; color: #dbe6f7; padding: 24px 18px; display: flex; flex-direction: column; gap: 28px; }
.sidebar-brand { display: flex; align-items: center; gap: 12px; text-decoration: none; font-weight: 800; }
.sidebar nav { display: grid; gap: 8px; }
.nav-link { padding: 11px 13px; border-radius: 9px; text-decoration: none; color: #b8c7dc; }
.nav-link.active, .nav-link:hover { background: #213656; color: #fff; }
.logout-button { margin-top: auto; width: 100%; background: #213656; color: #fff; }
.admin-content { padding: 38px; }
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 28px; }
.page-header h1 { margin-bottom: 0; }
.admin-name { color: var(--muted); }
.grid-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.inventory-metrics { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-bottom: 22px; }
.dashboard-second-row { margin-top: 18px; }
.metric-card { border-radius: 16px; padding: 22px; display: grid; gap: 8px; }
.metric-card span, .metric-card small { color: var(--muted); }
.metric-card strong { font-size: 20px; }
.panel { margin-top: 22px; padding: 28px; border-radius: 16px; }
.panel.narrow { max-width: 620px; }
.check-list { display: grid; gap: 12px; padding-left: 20px; color: var(--muted); }
.alert { border-radius: 10px; padding: 12px 16px; margin-bottom: 18px; }
.alert.success { color: #0c6841; background: #e9f7f0; border: 1px solid #bde7d2; }
.alert.danger { color: #8d202c; background: #fff0f1; border: 1px solid #f0c2c7; }
.alert.warning, .notice-box { color: #75530b; background: #fff8e6; border: 1px solid #ecd99b; }
.alert ul { margin-bottom: 0; }
.notice-box { border-radius: 12px; padding: 16px; margin-bottom: 24px; }
.notice-box p { margin: 8px 0 0; line-height: 1.6; }
.form-panel { max-width: 980px; }
.form-grid { display: grid; gap: 18px; }
.two-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.form-grid label, .block-field { display: grid; gap: 8px; font-size: 14px; font-weight: 700; }
.block-field { margin-top: 20px; }
.form-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 24px; }
.toolbar { display: flex; justify-content: space-between; gap: 16px; align-items: center; margin-bottom: 18px; }
.inline-filter { display: flex; gap: 10px; align-items: center; }
.inline-filter input { min-width: 260px; }
.inline-filter.multi { flex: 1; flex-wrap: wrap; }
.inline-filter.multi select { width: auto; min-width: 160px; }
.table-panel { padding: 0; overflow: hidden; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 850px; }
th, td { padding: 15px 18px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { color: var(--muted); font-size: 13px; background: #f8fafc; }
td small, td strong, .stock-main { display: block; }
td small { color: var(--muted); margin-top: 5px; }
.actions { display: flex; align-items: center; gap: 12px; }
.actions form { margin: 0; }
.text-button { border: 0; background: transparent; color: var(--primary); padding: 0; cursor: pointer; }
.badge { display: inline-block; padding: 5px 9px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.badge.enabled, .badge.available { color: #0c6841; background: #e5f6ed; }
.badge.disabled { color: #7d3340; background: #f9e9ec; }
.badge.reserved { color: #75530b; background: #fff4d4; }
.badge.sold { color: #31517a; background: #e8f0fa; }
.empty-state { text-align: center; color: var(--muted); padding: 38px; }
.pagination { display: flex; justify-content: center; align-items: center; gap: 16px; padding: 18px; }
.pagination a { color: var(--primary); }
.pagination .disabled { color: #a6afbd; }
.secure-actions { min-width: 220px; }
.secure-actions details + details { margin-top: 10px; }
.secure-actions summary { cursor: pointer; color: var(--primary); }
.secure-actions form { display: grid; gap: 8px; margin-top: 10px; }
.danger-text { color: #a52834 !important; }
.secret-display { display: flex; gap: 14px; align-items: center; background: #f5f8fc; border: 1px solid var(--border); border-radius: 12px; padding: 18px; }
.secret-display code { flex: 1; word-break: break-all; font-size: 16px; }
.store-shell { min-height: 100vh; display: flex; flex-direction: column; }
.store-header { height: 72px; padding: 0 max(24px, calc((100vw - 1160px) / 2)); display: flex; align-items: center; justify-content: space-between; background: #fff; border-bottom: 1px solid var(--border); }
.store-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; text-decoration: none; }
.store-logo { width: 42px; height: 42px; border-radius: 10px; object-fit: contain; }
.store-header nav { display: flex; gap: 22px; }
.store-header nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
.store-header nav a:hover { color: var(--primary); }
.store-main { width: min(1160px, calc(100% - 32px)); margin: 0 auto; padding: 42px 0 64px; flex: 1; }
.store-footer { text-align: center; color: var(--muted); padding: 24px; border-top: 1px solid var(--border); background: #fff; font-size: 13px; }
.store-hero { display: flex; justify-content: space-between; align-items: center; gap: 30px; margin-bottom: 28px; }
.store-hero h1 { font-size: clamp(30px, 5vw, 46px); margin-bottom: 12px; }
.store-hero .muted { max-width: 700px; }
.secure-note { min-width: 230px; display: grid; gap: 5px; padding: 18px; background: #eaf7f1; color: #176744; border-radius: 14px; }
.secure-note span { font-size: 12px; }
.checkout-layout { display: grid; grid-template-columns: minmax(0, 1fr) 310px; gap: 20px; align-items: start; }
.checkout-section, .order-summary, .order-card { background: #fff; border: 1px solid var(--border); border-radius: 18px; box-shadow: 0 14px 36px rgba(34, 56, 91, .06); }
.checkout-section { grid-column: 1; padding: 24px; }
.section-heading { display: flex; gap: 13px; align-items: flex-start; margin-bottom: 20px; }
.section-heading > span { width: 30px; height: 30px; display: grid; place-items: center; color: #fff; background: var(--primary); border-radius: 50%; font-weight: 800; }
.section-heading h2 { margin-bottom: 4px; font-size: 19px; }
.section-heading p { color: var(--muted); margin-bottom: 0; font-size: 13px; }
.product-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.product-type-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.product-type-tab { border: 1px solid var(--border); border-radius: 999px; padding: 10px 18px; color: #40506a; background: #f5f8fc; font-weight: 800; cursor: pointer; }
.product-type-tab[aria-selected="true"] { border-color: var(--primary); color: #fff; background: var(--primary); box-shadow: 0 7px 18px rgba(35, 105, 232, .18); }
.product-type-panel[hidden] { display: none; }
.product-card { position: relative; display: grid; gap: 9px; padding: 18px; border: 1px solid var(--border); border-radius: 13px; cursor: pointer; }
.product-card:has(input:checked) { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(35, 105, 232, .10); }
.product-card input { position: absolute; top: 16px; right: 16px; width: auto; }
.product-card strong { font-size: 22px; color: #d64c30; }
.product-name { font-weight: 800; padding-right: 28px; }
.product-description { color: var(--muted); font-size: 13px; line-height: 1.5; }
.stock-state { color: var(--success); font-size: 12px; font-weight: 700; }
.product-card.out-of-stock { opacity: .58; cursor: not-allowed; }
.empty-card { padding: 30px; color: var(--muted); background: #f8fafc; border-radius: 12px; }
.quantity-control { display: grid; grid-template-columns: 46px 100px 46px; gap: 8px; }
.quantity-control button { border: 1px solid var(--border); background: #f5f8fc; border-radius: 10px; font-size: 20px; cursor: pointer; }
.quantity-control input { text-align: center; }
.order-summary { grid-column: 2; grid-row: 1 / span 3; position: sticky; top: 20px; padding: 24px; display: grid; gap: 14px; }
.order-summary > span { color: var(--muted); }
.order-summary > strong { font-size: 34px; color: #d64c30; }
.order-summary p, .order-summary small { color: var(--muted); line-height: 1.6; }
.wide { width: 100%; }
.order-card { width: min(100%, 720px); margin: 20px auto; padding: 34px; }
.order-details { display: grid; gap: 0; margin: 25px 0; }
.order-details > div { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: 16px; padding: 13px 0; border-bottom: 1px solid var(--border); }
.order-details dt { color: var(--muted); }
.order-details dd { margin: 0; text-align: right; }
.order-details .price { color: #d64c30; font-size: 22px; font-weight: 800; }
.countdown-box { display: flex; justify-content: space-between; padding: 14px 16px; margin: 20px 0; border-radius: 11px; background: #fff5da; color: #765209; }
.payment-confirmation { display: grid; gap: 12px; margin-top: 16px; padding: 18px; border: 1px solid #bfd7fa; border-radius: 12px; background: #f0f6ff; }
.payment-confirmation[hidden] { display: none; }
.payment-confirmation strong { color: #24508e; }
.payment-confirmation p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.text-link { display: block; margin-top: 18px; text-align: center; color: var(--primary); }
.fake-payment-card { text-align: center; }
.fake-badge { display: inline-block; padding: 6px 10px; border-radius: 999px; color: #805c09; background: #fff2c9; font-size: 12px; font-weight: 800; }
.fake-amount { color: #d64c30; font-size: 42px; font-weight: 900; margin: 24px 0 10px; }
.status-panel { padding: 15px; border-radius: 11px; background: #eef4fb; margin: 20px 0; }
.status-completed { color: #0d6942; background: #e8f7ef; }
.status-closed, .status-manual_review { color: #7e3541; background: #faecee; }
.code-list { display: grid; gap: 12px; margin: 24px 0; }
.delivered-code { display: flex; align-items: center; gap: 12px; padding: 14px; background: #f5f8fc; border: 1px solid var(--border); border-radius: 11px; }
.delivered-code code { flex: 1; word-break: break-all; font-size: 16px; }
.order-recovery-note { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-top: 26px; padding: 18px; border: 1px solid #cfe0fb; border-radius: 12px; background: #f1f6ff; }
.order-recovery-note strong { display: block; margin-bottom: 6px; color: #234b87; }
.order-recovery-note p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.order-recovery-note .button-link { flex: 0 0 auto; }
.copy-feedback { position: fixed; z-index: 1000; left: 50%; bottom: 34px; padding: 11px 18px; border-radius: 999px; color: #fff; background: #14764d; box-shadow: 0 10px 28px rgba(20, 53, 41, .24); opacity: 0; pointer-events: none; transform: translate(-50%, 12px); transition: opacity .18s ease, transform .18s ease; }
.copy-feedback.is-visible { opacity: 1; transform: translate(-50%, 0); }
.copy-feedback.is-error { background: #a52d39; }
.security-tip { margin: 25px 0 0; padding-top: 18px; border-top: 1px solid var(--border); color: var(--muted); font-size: 13px; line-height: 1.6; }
.detail-grid { display: grid; grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr); gap: 20px; }
.detail-grid .panel { margin-top: 0; }
.detail-card details { margin-top: 14px; }
.detail-card details summary { cursor: pointer; color: var(--primary); }
.detail-card details form { display: grid; gap: 8px; margin-top: 9px; }
.admin-order-details { margin-bottom: 0; }
.compact-list { display: grid; gap: 9px; }
.compact-list > div { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.note-form { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 12px; }
.note-list article { margin-top: 15px; padding: 15px; background: #f7f9fc; border-radius: 10px; }
.note-list time { margin-left: 10px; color: var(--muted); font-size: 12px; }
.note-list p { margin: 8px 0 0; white-space: pre-wrap; }
.json-detail { display: block; max-width: 420px; white-space: normal; word-break: break-all; font-size: 11px; }
.badge.pending, .badge.processing { color: #75530b; background: #fff4d4; }
.badge.completed { color: #0c6841; background: #e5f6ed; }
.badge.closed, .badge.manual_review { color: #7d3340; background: #f9e9ec; }
.store-footer nav { display: flex; justify-content: center; gap: 16px; margin: 10px 0; }
.store-footer a { color: var(--primary); }
.history-order { padding: 20px 0; border-top: 1px solid var(--border); }
.history-order header { display: flex; justify-content: space-between; gap: 20px; }
.history-order header small { display: block; color: var(--muted); margin-top: 5px; }
.history-order header span { color: #d64c30; font-weight: 800; }
.policy-content { white-space: pre-wrap; line-height: 1.9; color: #344258; }

@media (max-width: 800px) {
    .hero-card { padding: 34px 26px; }
    .admin-shell { grid-template-columns: 1fr; }
    .sidebar { position: static; padding: 16px; }
    .sidebar nav { grid-template-columns: 1fr 1fr; }
    .admin-content { padding: 24px 16px; }
    .grid-cards { grid-template-columns: 1fr; }
    .inventory-metrics, .two-columns { grid-template-columns: 1fr; }
    .page-header { align-items: flex-start; gap: 16px; }
    .toolbar { align-items: stretch; flex-direction: column; }
    .inline-filter, .inline-filter.multi { align-items: stretch; flex-direction: column; }
    .inline-filter input, .inline-filter.multi select { min-width: 0; width: 100%; }
    .store-header { height: auto; padding: 14px 16px; align-items: flex-start; gap: 15px; }
    .store-header nav { gap: 10px; flex-direction: column; text-align: right; }
    .store-main { padding-top: 25px; }
    .store-hero { align-items: stretch; flex-direction: column; }
    .secure-note { min-width: 0; }
    .checkout-layout { grid-template-columns: 1fr; }
    .checkout-section, .order-summary { grid-column: 1; }
    .order-summary { grid-row: auto; position: static; }
    .product-grid { grid-template-columns: 1fr; }
    .order-recovery-note { align-items: stretch; flex-direction: column; }
    .order-recovery-note .button-link { width: 100%; }
    .order-card { padding: 25px 20px; }
    .order-details > div { grid-template-columns: 1fr; gap: 5px; }
    .order-details dd { text-align: left; }
    .detail-grid { grid-template-columns: 1fr; }
    .note-form { grid-template-columns: 1fr; }
}