:root {
    --bg: #f4f6f8;
    --panel: #ffffff;
    --text: #17202a;
    --muted: #667085;
    --line: #d8dee6;
    --primary: #146c5a;
    --primary-strong: #0f5144;
    --danger: #b42318;
    --sidebar: #111827;
    --sidebar-text: #e5e7eb;
}

[data-theme="dark"] {
    --bg: #111827;
    --panel: #1f2937;
    --text: #f9fafb;
    --muted: #aeb7c4;
    --line: #374151;
    --primary: #2dbb9b;
    --primary-strong: #38d1af;
    --sidebar: #0b1220;
    --sidebar-text: #f3f4f6;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.auth-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    background: #eef2f6;
}
.store-body { background: var(--bg); }
.store-header {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px min(5vw, 48px);
    background: var(--panel);
    border-bottom: 1px solid var(--line);
}
.store-header nav { display: flex; gap: 16px; flex-wrap: wrap; }
.store-header a { color: var(--text); text-decoration: none; }
.store-brand { display: flex; align-items: center; gap: 10px; }
.store-main { width: min(1120px, calc(100vw - 28px)); margin: 0 auto; padding: 28px 0; }
.store-hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 24px;
}
.store-hero h1 { font-size: 34px; margin: 0 0 8px; }
.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.product-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 16px;
    display: grid;
    gap: 12px;
}
.product-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 8px; }
.product-card h2 { font-size: 18px; margin: 0; }
.product-card p { color: var(--muted); min-height: 48px; }
.product-card strong { font-size: 22px; }
.store-panel { width: min(780px, 100%); margin: 0 auto; }
.payment-box {
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 14px;
    background: rgba(20,108,90,.06);
}
.payment-box code { display: block; word-break: break-word; font-size: 18px; }

.auth-shell { width: min(430px, calc(100vw - 32px)); }
.auth-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 28px;
    box-shadow: 0 18px 50px rgba(17, 24, 39, .12);
}
.auth-brand { display: flex; gap: 14px; align-items: center; margin-bottom: 24px; }
.auth-brand h1 { font-size: 24px; margin: 0; }
.auth-brand p { margin: 2px 0 0; color: var(--muted); }

.app-shell { min-height: 100vh; display: flex; }
.sidebar {
    width: 268px;
    background: var(--sidebar);
    color: var(--sidebar-text);
    padding: 18px 14px;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    transition: width .2s ease;
}
.sidebar.collapsed { width: 82px; }
.sidebar.collapsed .brand-text,
.sidebar.collapsed .nav-link span:last-child { display: none; }
.brand { display: flex; align-items: center; gap: 10px; padding: 8px 8px 18px; font-weight: 800; }
.brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    display: inline-grid;
    place-items: center;
    background: var(--primary);
    color: #fff;
    font-weight: 800;
    flex: 0 0 auto;
}
.nav-menu { display: grid; gap: 4px; }
.nav-link {
    color: var(--sidebar-text);
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    text-decoration: none;
    opacity: .82;
}
.nav-link:hover, .nav-link.active { background: rgba(255,255,255,.1); color: #fff; opacity: 1; }
.nav-icon { width: 28px; height: 28px; display: inline-grid; place-items: center; border-radius: 6px; background: rgba(255,255,255,.08); font-size: 12px; }

.app-main { flex: 1; min-width: 0; }
.topbar {
    min-height: 72px;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 24px;
    background: var(--panel);
    border-bottom: 1px solid var(--line);
}
.topbar h1 { font-size: 22px; margin: 0; }
.topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.icon-button {
    border: 1px solid var(--line);
    background: var(--panel);
    color: var(--text);
    border-radius: 8px;
    width: 40px;
    height: 40px;
}
.user-chip { border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; color: var(--muted); }
.content-wrap { padding: 24px; }
.muted { color: var(--muted); }

.panel, .panel-sub {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 18px;
}
.panel-sub { background: transparent; }
.panel-header {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
    margin-bottom: 16px;
}
.panel-header h2 { margin: 0; font-size: 18px; }
.search-form { display: flex; gap: 8px; width: min(520px, 100%); }

.metric-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 18px;
}
.metric-grid.compact { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.metric-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 16px;
}
.metric-card span { display: block; color: var(--muted); font-size: 13px; }
.metric-card strong { display: block; font-size: 24px; margin-top: 8px; }
.metric-card.danger strong { color: var(--danger); }
.grid-two { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}
.form-span-2 { grid-column: 1 / -1; }
.form-actions { display: flex; justify-content: flex-end; gap: 10px; }
.detail-list {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 10px 16px;
}
.detail-list dt { color: var(--muted); }
.status-badge {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 2px 9px;
    border-radius: 999px;
    background: rgba(20, 108, 90, .12);
    color: var(--primary-strong);
    font-size: 12px;
    font-weight: 700;
}
.status-badge.danger { background: rgba(180, 35, 24, .12); color: var(--danger); }
.order-item-row { display: grid; grid-template-columns: 1fr 120px 160px; gap: 10px; margin-bottom: 10px; }
.stock-options { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.stock-option {
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 12px;
    display: flex;
    gap: 10px;
    align-items: center;
    justify-content: space-between;
}
.stock-option:has(input:disabled) { opacity: .5; }
.table { color: var(--text); }
.form-control, .form-select {
    background-color: var(--panel);
    border-color: var(--line);
    color: var(--text);
}
.btn-primary { background: var(--primary); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-strong); border-color: var(--primary-strong); }

@media (max-width: 980px) {
    .sidebar { position: fixed; z-index: 20; transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .metric-grid, .grid-two { grid-template-columns: 1fr 1fr; }
    .product-grid { grid-template-columns: 1fr 1fr; }
    .form-grid { grid-template-columns: 1fr; }
    .form-span-2 { grid-column: auto; }
}

@media (max-width: 640px) {
    .content-wrap { padding: 14px; }
    .topbar { padding: 12px; align-items: flex-start; }
    .topbar-actions { flex-wrap: wrap; justify-content: flex-end; }
    .metric-grid, .grid-two { grid-template-columns: 1fr; }
    .store-header, .store-hero { align-items: flex-start; flex-direction: column; }
    .product-grid { grid-template-columns: 1fr; }
    .order-item-row { grid-template-columns: 1fr; }
    .stock-options { grid-template-columns: 1fr; }
    .search-form { flex-direction: column; }
    .detail-list { grid-template-columns: 1fr; }
}