:root{
  --orange-600:#f97316;
  --orange-900:#7c2d12;
  --accent:var(--orange-600);
  --bg:#f7f9fb;
  --muted:#6b7280;
  --green:#15803d;
  --card:#ffffff;
  --border:#e6e9ee;
  --radius:12px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, "Roboto Mono", "Courier New", monospace;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}
*{box-sizing:border-box}
body,html{height:100%;margin:0;background:var(--bg);color:#111}
.app{display:flex;flex-direction:column;height:100vh;overflow:hidden}
.header{background:linear-gradient(90deg,var(--accent),rgba(249,115,22,0.9));color:white;padding:18px 20px;box-shadow:0 6px 24px rgba(234,88,12,0.12)}
.header-inner{max-width:1200px;margin:0 auto}
.title{display:flex;gap:12px;align-items:center}
.title h1{margin:0;font-size:20px}
.subtitle{margin:2px 0 0 0;color:rgba(255,255,255,0.9);font-size:13px}

/* Controls */
.controls{background:white;border-bottom:1px solid var(--border);padding:14px 20px;max-width:1200px;margin:0 auto;width:100%;border-radius:var(--radius);box-shadow:0 1px 6px rgba(17,17,17,0.04)}
.controls-row{display:flex;gap:12px;align-items:center}
.searchbox{position:relative;flex:1;display:flex;align-items:center}
.searchbox .icon.search{position:absolute;left:10px;color:var(--muted)}
.searchbox input{width:100%;padding:10px 36px 10px 36px;border:1px solid #e6e9ee;border-radius:999px;font-size:14px;box-shadow:0 1px 4px rgba(17,17,17,0.04);transition:box-shadow .15s,border-color .15s}
.icon-btn{position:absolute;right:8px;border:0;background:transparent;font-size:14px;color:var(--muted);cursor:pointer}
.icon-btn:hover{color:#374151}
.btn{padding:9px 14px;border-radius:10px;border:1px solid var(--border);background:var(--card);color:#111;cursor:pointer;transition:transform .12s,box-shadow .12s,background-color .12s}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(17,17,17,0.06)}
.btn.active{background:var(--accent);color:white;border-color:transparent}

/* filters */
.filters{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:12px}
.filters input{padding:8px;border:1px solid #eef2f3;border-radius:8px}
.hidden{display:none}

/* meta */
.meta{margin-top:10px;color:var(--muted);font-size:13px}

/* Content */
.content{flex:1;overflow:auto;padding:20px;max-width:1200px;margin:0 auto;width:100%;min-height:0;-webkit-overflow-scrolling:touch}
.card{background:var(--card);padding:18px;border-radius:14px;box-shadow:0 8px 24px rgba(17,17,17,0.04);min-height:200px;transition:transform .12s,box-shadow .12s}

/* Tree nodes */
.node{user-select:none}
.node-row{display:flex;align-items:center;gap:8px;padding:8px;border-radius:8px;cursor:pointer;transition:background-color .12s,color .12s}
.node-row:hover{background:#fff7f2}
.node-row.level-0{font-weight:700;color:var(--orange-900)}
.node-row.level-1{font-weight:600;color:#c2410c}
.node-row.level-2{color:#ea8a4a}
.node-row.level-3{color:var(--muted)}
.code-mono{font-family:var(--mono);font-size:12px;color:#475569;margin-right:6px}
.count-badge{background:#fff4e6;color:var(--accent);padding:4px 8px;border-radius:999px;font-size:12px}

/* Acte card */
.acte{background:white;border:1px solid var(--border);border-radius:12px;padding:12px;margin:10px 0;transition:transform .12s,box-shadow .12s}
.acte:hover{transform:translateY(-4px);box-shadow:0 14px 40px rgba(17,17,17,0.06)}
.acte .head{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}
.acte .head .left{flex:1}
.acte .code{font-family:var(--mono);font-weight:700;color:var(--accent);display:flex;align-items:center;gap:8px}
.chev{width:18px;height:18px;display:inline-block}
.acte .price{font-size:18px;font-weight:700;color:var(--green);text-align:right}
.acte .details{margin-top:12px;padding-top:12px;border-top:1px solid #f6f3f1;display:grid;grid-template-columns:1fr 1fr;gap:10px;font-size:13px}
.acte .col-span-2{grid-column:1 / -1}

/* spacing for nested */
.nested{margin-left:20px}

/* small screens */
@media (max-width:800px){
  .filters{grid-template-columns:repeat(2,1fr)}
  .controls{padding:12px}
  .header{padding:12px}
  .content{padding:12px}
}