:root {
    --bg: #0b0e14;
    --panel: #151a24;
    --panel-2: #1b2230;
    --border: #232a38;
    --text: #e6eaf2;
    --muted: #8b93a7;
    --accent: #6366f1;
    --accent-2: #22d3ee;
    --success: #34d399;
    --danger: #f87171;
    --warn: #fbbf24;
    --radius: 10px;
    --shadow: 0 4px 20px rgba(0, 0, 0, .35);
}

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

body {
    font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    padding-bottom: 340px;
}

/* ---------- Topbar ---------- */
.topbar {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 14px 28px;
    background: linear-gradient(135deg, #10131c, #161b2b);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
    flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo {
    width: 40px; height: 40px;
    display: grid; place-items: center;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    font-weight: 800; font-size: 18px; color: #fff;
}
.brand h1 { font-size: 17px; font-weight: 700; }
.brand-sub { font-size: 12px; color: var(--muted); }

.status-dots { display: flex; gap: 14px; flex-wrap: wrap; margin-left: auto; }
.status-dot { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.status-dot i {
    width: 9px; height: 9px; border-radius: 50%;
    background: #3a4254;
    box-shadow: 0 0 0 3px rgba(58, 66, 84, .25);
}
.status-dot.up i { background: var(--success); box-shadow: 0 0 0 3px rgba(52, 211, 153, .25); }
.status-dot.down i { background: var(--danger); box-shadow: 0 0 0 3px rgba(248, 113, 113, .25); }
.status-dot.checking i { background: var(--warn); box-shadow: 0 0 0 3px rgba(251, 191, 36, .25); }

.user-chip { display: flex; align-items: center; gap: 10px; font-size: 13px; }
.chip-user {
    background: var(--panel-2);
    border: 1px solid var(--border);
    padding: 6px 14px;
    border-radius: 999px;
    color: var(--text);
}
.chip-user b { color: var(--accent-2); }
.chip-guest { color: var(--muted); font-size: 13px; }

/* ---------- Tabs ---------- */
.tabs {
    display: flex;
    gap: 4px;
    padding: 12px 28px 0;
    background: #0d1018;
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
    position: sticky;
    top: 69px;
    z-index: 40;
}
.tab-btn {
    background: transparent;
    border: 1px solid transparent;
    border-bottom: none;
    color: var(--muted);
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border-radius: 8px 8px 0 0;
    white-space: nowrap;
    transition: color .15s, background .15s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
    color: #fff;
    background: linear-gradient(135deg, rgba(99, 102, 241, .18), rgba(34, 211, 238, .12));
    border-color: var(--border);
}

/* ---------- Layout ---------- */
.content { padding: 24px 28px; max-width: 1440px; margin: 0 auto; }
.view { display: none; }
.view.active { display: block; animation: fadeIn .2s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; } }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.span-4 { grid-column: span 4; }
@media (max-width: 900px) { .grid-2, .grid-4 { grid-template-columns: 1fr; } .span-4 { grid-column: auto; } }

.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}
.card h2 { font-size: 16px; font-weight: 700; margin-bottom: 14px; color: #fff; }

.muted { color: var(--muted); font-size: 13px; }
code { background: var(--panel-2); padding: 2px 6px; border-radius: 5px; font-size: 12px; color: var(--accent-2); }
.mt { margin-top: 16px; }
.hidden { display: none !important; }

/* ---------- Forms ---------- */
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 14px; }
input, textarea, select {
    width: 100%;
    margin-top: 6px;
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    padding: 10px 12px;
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color .15s;
}
input:focus, textarea:focus, select:focus { border-color: var(--accent); }
textarea { resize: vertical; }
.input { margin: 0; }
select.input { width: auto; min-width: 200px; }

.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    border: 1px solid var(--border);
    background: var(--panel-2);
    color: var(--text);
    padding: 9px 16px;
    font-size: 13px; font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: filter .15s, transform .05s;
}
.btn:hover { filter: brightness(1.2); }
.btn:active { transform: scale(.98); }
.btn-primary { background: linear-gradient(135deg, var(--accent), #4f46e5); border-color: transparent; color: #fff; }
.btn-danger { background: rgba(248, 113, 113, .14); border-color: rgba(248, 113, 113, .4); color: var(--danger); }
.btn-ghost { background: transparent; }
.btn-block { width: 100%; }
.btn-sm { padding: 5px 10px; font-size: 12px; }

/* ---------- Toolbar ---------- */
.toolbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.toolbar h2 { margin: 0; }
.toolbar .btn, .toolbar .input { margin: 0; }

/* ---------- Pre boxes ---------- */
.pre-box {
    background: #0d1018;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px;
    font-family: "Cascadia Code", Consolas, monospace;
    font-size: 12px;
    line-height: 1.5;
    color: var(--accent-2);
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 260px;
    overflow-y: auto;
}

/* ---------- Tables ---------- */
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th {
    text-align: left;
    color: var(--muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .06em;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
}
.table td { padding: 10px 12px; border-bottom: 1px solid rgba(35, 42, 56, .6); vertical-align: middle; }
.table tbody tr:hover { background: rgba(99, 102, 241, .06); }

/* ---------- Badges ---------- */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .03em;
}
.badge-pending   { background: rgba(251, 191, 36, .15);  color: var(--warn); }
.badge-confirmed { background: rgba(59, 130, 246, .15);  color: #60a5fa; }
.badge-shipped   { background: rgba(167, 139, 250, .15); color: #a78bfa; }
.badge-delivered { background: rgba(52, 211, 153, .15);  color: var(--success); }
.badge-cancelled { background: rgba(248, 113, 113, .15); color: var(--danger); }
.badge-refunded  { background: rgba(251, 146, 60, .15);  color: #fb923c; }
.badge-stock-ok  { background: rgba(52, 211, 153, .12);  color: var(--success); }
.badge-stock-low { background: rgba(251, 191, 36, .12);  color: var(--warn); }
.badge-stock-out { background: rgba(248, 113, 113, .12); color: var(--danger); }

/* ---------- Product grid ---------- */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 18px;
}
.product-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color .15s, transform .15s;
}
.product-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.product-img { height: 150px; background: var(--panel-2); position: relative; overflow: hidden; }
.product-img img { width: 100%; height: 100%; object-fit: cover; }
.product-img .img-fallback {
    width: 100%; height: 100%;
    display: grid; place-items: center;
    background: linear-gradient(135deg, #1e2433, #2a3348);
    font-size: 44px; font-weight: 800; color: rgba(255, 255, 255, .25);
}
.product-body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.product-name { font-size: 15px; font-weight: 700; line-height: 1.3; }
.product-man { font-size: 12px; color: var(--muted); }
.product-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.product-price { font-size: 18px; font-weight: 800; color: var(--accent-2); }
.product-add { display: flex; gap: 8px; margin-top: auto; }
.product-add input { width: 64px; margin: 0; }
.product-add .btn { flex: 1; }

/* ---------- Cart ---------- */
.cart-total {
    margin-top: 16px;
    text-align: right;
    font-size: 18px;
    font-weight: 800;
    color: var(--accent-2);
}
.qty-btn {
    width: 28px; height: 28px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--panel-2);
    color: var(--text);
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
}
.qty-wrap { display: inline-flex; align-items: center; gap: 8px; }
.qty-wrap span { min-width: 22px; text-align: center; font-weight: 700; }

/* ---------- Orders ---------- */
.order-item {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 14px;
    background: var(--panel-2);
}
.order-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 10px; }
.order-head .order-id { font-weight: 800; }
.order-head .order-date { color: var(--muted); font-size: 12px; margin-left: auto; }
.order-total { font-weight: 800; color: var(--accent-2); }
.status-form { display: inline-flex; align-items: center; gap: 8px; }
.status-form select { width: auto; margin: 0; padding: 6px 10px; font-size: 12px; }
.status-form .btn { padding: 6px 12px; font-size: 12px; }

/* ---------- API log ---------- */
.api-log {
    position: fixed;
    left: 0; right: 0; bottom: 0;
    background: #0d1018;
    border-top: 1px solid var(--border);
    z-index: 100;
    max-height: 38vh;
    display: flex;
    flex-direction: column;
}
.api-log-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 28px;
    font-size: 13px; font-weight: 700;
    color: var(--muted);
    background: #10141f;
    border-bottom: 1px solid var(--border);
}
.api-log-body { padding: 10px 28px 16px; overflow-y: auto; }
.api-log.collapsed .api-log-body { display: none; }
.log-entry {
    border-left: 3px solid var(--border);
    padding: 8px 12px;
    margin-bottom: 8px;
    background: var(--panel);
    border-radius: 0 8px 8px 0;
    font-size: 12px;
}
.log-entry pre { margin-top: 6px; white-space: pre-wrap; word-break: break-word; color: var(--muted); max-height: 140px; overflow-y: auto; }
.log-entry .log-url { color: var(--text); font-family: Consolas, monospace; word-break: break-all; }
.log-method { display: inline-block; font-weight: 800; padding: 1px 8px; border-radius: 5px; font-size: 11px; margin-right: 8px; }
.log-method.GET    { background: rgba(52, 211, 153, .15);  color: var(--success); }
.log-method.POST   { background: rgba(59, 130, 246, .15);  color: #60a5fa; }
.log-method.PUT    { background: rgba(251, 191, 36, .15);  color: var(--warn); }
.log-method.PATCH  { background: rgba(167, 139, 250, .15); color: #a78bfa; }
.log-method.DELETE { background: rgba(248, 113, 113, .15); color: var(--danger); }
.log-status { margin-left: 8px; font-weight: 700; }
.log-status.ok { color: var(--success); }
.log-status.err { color: var(--danger); }

/* ---------- Toast ---------- */
.toast {
    position: fixed;
    top: 84px; left: 50%;
    transform: translateX(-50%) translateY(-16px);
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px 22px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s, transform .25s;
    z-index: 200;
    max-width: 80vw;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.ok { border-color: var(--success); color: var(--success); }
.toast.err { border-color: var(--danger); color: var(--danger); }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #2a3348; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: #364158; }