:root {
  --bg: #f4f6fb;
  --panel: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --primary: #4f46e5;
  --primary-soft: #eef2ff;
  --danger: #dc2626;
  --success: #059669;
  --radius: 10px;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); font-size: 14px; }
h1, h2, h3 { margin: 0 0 12px; }
h1 { font-size: 22px; }
h2 { font-size: 18px; }
h3 { font-size: 15px; }
a { color: var(--primary); }

.layout { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: #111827; color: #e5e7eb; padding: 20px 12px; flex-shrink: 0; }
.sidebar .brand { font-weight: 700; font-size: 17px; padding: 0 10px 20px; color: #fff; }
.sidebar button { display: block; width: 100%; text-align: left; background: none; border: 0; color: inherit; padding: 10px 12px; border-radius: 8px; cursor: pointer; font-size: 14px; margin-bottom: 2px; }
.sidebar button:hover { background: #1f2937; }
.sidebar button.active { background: var(--primary); color: #fff; }
.main { flex: 1; padding: 24px; overflow-x: auto; }

.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; margin-bottom: 16px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
.grow { flex: 1; min-width: 180px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; font-weight: 600; }
input, textarea, select { width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; font: inherit; background: #fff; color: inherit; }
textarea { min-height: 80px; resize: vertical; }
input[type="color"] { padding: 2px; height: 36px; }
input[type="checkbox"], input[type="radio"] { width: auto; }
.field { margin-bottom: 12px; }

.btn { border: 1px solid var(--border); background: #fff; padding: 8px 14px; border-radius: 8px; cursor: pointer; font: inherit; font-weight: 600; white-space: nowrap; }
.btn:hover { background: #f9fafb; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { color: var(--danger); }
.btn.sm { padding: 4px 10px; font-size: 12px; }

.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; }
.stat b { display: block; font-size: 26px; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 12px; color: var(--muted); }

.content-grid { display: grid; grid-template-columns: 260px 1fr; gap: 16px; align-items: start; }
.tree .top { font-weight: 700; margin: 12px 0 4px; display: flex; justify-content: space-between; align-items: center; }
.tree .item { padding: 7px 10px; border-radius: 8px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 6px; }
.tree .item:hover { background: #f3f4f6; }
.tree .item.active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; margin-right: 6px; }

.tabs { display: flex; gap: 6px; margin-bottom: 14px; border-bottom: 1px solid var(--border); }
.tabs button { background: none; border: 0; padding: 8px 12px; cursor: pointer; font: inherit; font-weight: 600; color: var(--muted); border-bottom: 2px solid transparent; }
.tabs button.active { color: var(--primary); border-bottom-color: var(--primary); }

.item-box { border: 1px solid var(--border); border-radius: 8px; padding: 12px; margin-bottom: 10px; background: #fcfcfd; }
.opt-row { display: flex; gap: 8px; align-items: center; margin-bottom: 6px; }
.opt-row span { width: 18px; font-weight: 700; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; background: var(--primary-soft); color: var(--primary); font-size: 11px; font-weight: 700; }
.badge.lock { background: #fef3c7; color: #92400e; }

.login { max-width: 360px; margin: 12vh auto; }
pre.code { background: #0f172a; color: #e2e8f0; padding: 12px; border-radius: 8px; overflow: auto; font-size: 12px; white-space: pre-wrap; }

.phone { width: 260px; border: 10px solid #111827; border-radius: 32px; padding: 14px; min-height: 460px; }
.phone .p-card { border-radius: 14px; padding: 12px; margin-bottom: 10px; }

#toast { position: fixed; bottom: 20px; right: 20px; background: #111827; color: #fff; padding: 10px 16px; border-radius: 8px; opacity: 0; transition: opacity .2s; pointer-events: none; z-index: 10; }
#toast.show { opacity: 1; }
#toast.error { background: var(--danger); }

@media (max-width: 800px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; display: flex; flex-wrap: wrap; gap: 4px; padding: 10px; }
  .sidebar .brand { width: 100%; padding: 4px 8px; }
  .sidebar button { width: auto; }
  .content-grid { grid-template-columns: 1fr; }
  .main { padding: 14px; }
}