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

:root {
  --bg: #f5f5f5;
  --card: #fff;
  --text: #1a1a1a;
  --muted: #666;
  --primary: #2563eb;
  --danger: #dc2626;
  --success: #16a34a;
  --border: #e5e5e5;
  --radius: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.topnav {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1.5rem;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.brand { font-weight: 700; font-size: 1.1rem; }

.nav-links { display: flex; gap: 0.25rem; flex-wrap: wrap; }

.nav-links a {
  padding: 0.4rem 0.75rem;
  text-decoration: none;
  color: var(--muted);
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.nav-links a:hover, .nav-links a.active {
  background: var(--primary);
  color: #fff;
}

.logout-btn {
  margin-left: auto;
  padding: 0.4rem 0.75rem;
  background: var(--danger);
  color: #fff;
  text-decoration: none;
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.content { max-width: 1200px; margin: 0 auto; padding: 1.5rem; }

h1 { font-size: 1.5rem; margin-bottom: 1rem; }
h2 { font-size: 1.2rem; margin-bottom: 0.75rem; }
h3 { font-size: 1rem; margin: 1rem 0 0.5rem; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--card);
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  text-align: center;
}

.stat-value { display: block; font-size: 1.75rem; font-weight: 700; color: var(--primary); }
.stat-label { display: block; font-size: 0.85rem; color: var(--muted); margin-top: 0.25rem; }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

th, td { padding: 0.6rem 0.75rem; text-align: left; font-size: 0.9rem; }
th { background: #fafafa; font-weight: 600; border-bottom: 2px solid var(--border); }
td { border-bottom: 1px solid var(--border); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: #f9fafb; }

.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-active { background: #dcfce7; color: var(--success); }
.badge-banned { background: #fee2e2; color: var(--danger); }

.btn, .btn-sm, button {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  font-size: 0.9rem;
}

.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.8rem; }
.btn:hover, .btn-sm:hover, button:hover { opacity: 0.9; }
.btn-danger, .btn-danger:hover { background: var(--danger); }
.btn-success, .btn-success:hover { background: var(--success); }
.btn-secondary { background: var(--muted); }

.form, .inline-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 500px;
}

.inline-form { flex-direction: row; flex-wrap: wrap; align-items: end; max-width: none; }

.form label { font-weight: 600; font-size: 0.9rem; }

input, select, textarea {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-family: inherit;
}

textarea { min-height: 80px; resize: vertical; }

.form-section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1rem;
}

.form-section summary {
  font-weight: 600;
  cursor: pointer;
  margin-bottom: 0.75rem;
}

.detail-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.detail-card p { margin-bottom: 0.4rem; }

.flash {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.flash-info { background: #dbeafe; color: #1e40af; }
.flash-error { background: #fee2e2; color: #991b1b; }

.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: #e5e7eb;
}

.login-box {
  background: var(--card);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  width: 100%;
  max-width: 360px;
}

.login-box h1 { text-align: center; margin-bottom: 1.5rem; }
.login-box label { display: block; margin-bottom: 0.25rem; font-weight: 600; }
.login-box input { width: 100%; margin-bottom: 1rem; }
.login-box button { width: 100%; }

.error { color: var(--danger); text-align: center; margin-bottom: 1rem; }

code { background: #f1f5f9; padding: 0.1rem 0.3rem; border-radius: 3px; font-size: 0.85em; }
pre { font-size: 0.8rem; white-space: pre-wrap; word-break: break-all; max-width: 300px; }

.muted { color: var(--muted); font-size: 0.85rem; }

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1rem;
}

.seed-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.seed-card.danger {
  border-color: var(--danger);
  border-width: 2px;
}

.seed-card h2 { margin-bottom: 0.5rem; }
.seed-card p { margin-bottom: 1rem; color: var(--muted); }

.catalog-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 900px) {
  .catalog-grid { grid-template-columns: 1fr; }
}

.catalog-tree h2 { margin-bottom: 0.75rem; }

.catalog-forms { position: sticky; top: 1rem; }

.tree-node { margin-left: 0; }
.tree-location > .tree-children { margin-left: 0; }

.tree-children {
  margin-left: 1.5rem;
  border-left: 2px solid var(--border);
  padding-left: 0.75rem;
}

.tree-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0;
  flex-wrap: wrap;
}

.tree-label strong { font-size: 0.95rem; }

.tree-icon { font-size: 1rem; }

.tree-meta {
  font-size: 0.78rem;
  color: var(--muted);
  margin-left: 0.25rem;
}

.tree-empty {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0.3rem 0;
  padding-left: 1.5rem;
}

.tree-product {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0;
  margin-left: 1.5rem;
  border-left: none;
}

.tree-product .tree-name { font-weight: 500; font-size: 0.9rem; }

.tree-add {
  margin: 0.3rem 0 0.3rem 1.5rem;
}

.tree-location {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  margin-bottom: 0.75rem;
}

.tree-location > .tree-children { margin-left: 0; border-left: none; padding-left: 0; }

.tree-node:not(.tree-location) .tree-children {
  margin-left: 1rem;
  border-left: 2px solid var(--border);
  padding-left: 0.5rem;
}

.form-row {
  display: flex;
  gap: 0.5rem;
}

.form-row input { flex: 1; }

@media (max-width: 640px) {
  .topnav { flex-direction: column; align-items: flex-start; }
  .logout-btn { margin-left: 0; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  table { font-size: 0.8rem; }
  th, td { padding: 0.4rem; }
  .catalog-grid { grid-template-columns: 1fr; }
}