:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --panel-border: #334155;
  --text: #f8fafc;
  --muted: #94a3b8;
  --accent: #f59e0b;
  --accent-soft: rgba(245, 158, 11, 0.15);
  --ok: #22c55e;
  --danger: #ef4444;
  --radius: 12px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: radial-gradient(circle at top, #1e293b 0%, var(--bg) 45%);
  color: var(--text);
  min-height: 100vh;
}

.layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), #d97706);
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #111827;
}

h1 {
  margin: 0;
  font-size: 1.5rem;
}

.subtitle {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.status-pill {
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  font-size: 0.85rem;
}

.status-pill.online { color: var(--ok); border-color: rgba(34, 197, 94, 0.4); }
.status-pill.offline { color: var(--danger); border-color: rgba(239, 68, 68, 0.4); }

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}

.config-panel h2,
.panel-head h2 {
  margin: 0 0 14px;
  font-size: 1.05rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--muted);
}

input {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--panel-border);
  background: #0b1220;
  color: var(--text);
}

input:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.btn {
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-weight: 600;
  cursor: pointer;
}

.btn.primary {
  background: var(--accent);
  color: #111827;
}

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

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.tab {
  border: 1px solid var(--panel-border);
  background: var(--panel);
  color: var(--muted);
  padding: 10px 16px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
}

.tab.active {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: rgba(245, 158, 11, 0.45);
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.15);
  font-size: 0.78rem;
  text-transform: capitalize;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 16px;
}

.stat-label {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
  margin-bottom: 6px;
}

.stat-card strong {
  font-size: 1.4rem;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.panel-head input[type="search"] {
  min-width: 240px;
}

.table-wrap {
  overflow-x: auto;
}

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

th, td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid var(--panel-border);
  font-size: 0.92rem;
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

tbody tr:hover {
  background: rgba(245, 158, 11, 0.05);
}

.empty {
  text-align: center;
  color: var(--muted);
  padding: 28px !important;
}

.footer {
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
  padding-top: 8px;
}

.footer a { color: var(--accent); }

.developer-credit-inline {
  display: inline-block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.78rem;
}

.hint {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.modal.hidden { display: none; }
.modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.55); }
.modal-card {
  position: relative;
  width: min(480px, calc(100vw - 32px));
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.modal-card h2 { margin: 0; font-size: 1.15rem; }
.modal-sub { margin: 0; color: var(--muted); font-size: 0.85rem; }
.modal-card label { display: flex; flex-direction: column; gap: 6px; font-size: 0.85rem; color: var(--muted); }
.edit-status { min-height: 1.2em; font-size: 0.85rem; color: var(--accent); margin: 0; }

.sale-detail {
  margin-top: 14px;
  padding: 14px;
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--panel-border);
  font-size: 0.88rem;
}
.sale-detail.hidden { display: none; }
.sale-detail h3 { margin: 0 0 8px; font-size: 0.95rem; }
.sale-detail table { margin-top: 8px; }

.product-detail {
  margin-top: 14px;
  padding: 14px;
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--panel-border);
  font-size: 0.88rem;
}
.product-detail.hidden { display: none; }
.product-detail h3 { margin: 0 0 10px; font-size: 0.95rem; }
.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 8px 16px;
}
.detail-grid dt { color: var(--muted); font-size: 0.78rem; margin: 0; }
.detail-grid dd { margin: 2px 0 0; font-weight: 600; }

.clickable-row { cursor: pointer; }
.clickable-row:hover { background: rgba(245, 158, 11, 0.08); }

.btn.small {
  padding: 6px 10px;
  font-size: 0.78rem;
}

@media (max-width: 640px) {
  .header { flex-direction: column; align-items: flex-start; }
}