:root{
  --bg:#0b1220;
  --panel:#111b2d;
  --card:#0f1a2b;
  --text:#e5e7eb;
  --muted:#94a3b8;
  --border:rgba(255,255,255,0.08);
  --primary:#3b82f6;
  --primary-600:#2563eb;
  --danger:#ef4444;
  --success:#10b981;
  --shadow:0 14px 35px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:radial-gradient(1200px 700px at 15% 10%, rgba(59,130,246,.22), transparent 60%), radial-gradient(900px 600px at 90% 30%, rgba(16,185,129,.18), transparent 60%), var(--bg); color:var(--text)}

.app{min-height:100vh;display:flex;flex-direction:column}

.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;border-bottom:1px solid var(--border);background:rgba(11,18,32,.75);backdrop-filter:blur(12px)}
.brand{display:flex;align-items:center;gap:12px}
.brand-badge{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#22d3ee);display:grid;place-items:center;font-weight:900;box-shadow:var(--shadow)}
.brand-title{font-weight:900;letter-spacing:.2px}
.brand-sub{color:var(--muted);font-size:12px;margin-top:2px}

.topbar-right{display:flex;align-items:center;gap:10px;flex-wrap:wrap}

.main{flex:1;display:grid;grid-template-columns:280px 1fr;gap:14px;padding:14px 16px}
@media (max-width: 980px){.main{grid-template-columns:1fr}.sidebar{order:2}}

.sidebar{border:1px solid var(--border);border-radius:16px;background:rgba(17,27,45,.75);backdrop-filter:blur(10px);box-shadow:var(--shadow);padding:12px;display:flex;flex-direction:column;min-height:360px}
.sidebar-title{font-weight:800;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.7px;padding:6px 8px}
.topics{display:flex;flex-direction:column;gap:8px;margin-top:6px}
.topic{padding:10px 10px;border:1px solid var(--border);border-radius:12px;background:rgba(15,26,43,.75);cursor:pointer;transition:transform .12s ease,border-color .12s ease}
.topic:hover{transform:translateY(-1px);border-color:rgba(59,130,246,.35)}
.topic.active{border-color:rgba(59,130,246,.55);box-shadow:0 0 0 3px rgba(59,130,246,.12)}
.topic-title{font-weight:800}
.topic-desc{color:var(--muted);font-size:12px;margin-top:4px;line-height:1.35}
.sidebar-foot{margin-top:auto;padding-top:12px}

.content{border:1px solid var(--border);border-radius:16px;background:rgba(17,27,45,.65);backdrop-filter:blur(10px);box-shadow:var(--shadow);padding:12px;min-height:520px}
.toolbar{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:6px 6px 12px;border-bottom:1px solid var(--border)}
.toolbar-right{display:flex;align-items:center;gap:10px}
.h1{font-weight:900;font-size:18px}
.sub{color:var(--muted);font-size:13px;margin-top:3px}

.card{padding:12px}

.btn{border:1px solid var(--border);background:rgba(15,26,43,.8);color:var(--text);padding:10px 12px;border-radius:12px;cursor:pointer;font-weight:700;transition:transform .12s ease, border-color .12s ease}
.btn:hover{transform:translateY(-1px);border-color:rgba(59,130,246,.35)}
.btn.primary{background:linear-gradient(135deg,var(--primary),var(--primary-600));border-color:transparent}
.btn.danger{background:linear-gradient(135deg,#ef4444,#dc2626);border-color:transparent}

.icon-btn{border:1px solid var(--border);background:rgba(15,26,43,.8);color:var(--text);width:36px;height:36px;border-radius:12px;cursor:pointer}

.pill{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--border);padding:8px 10px;border-radius:999px;background:rgba(15,26,43,.65);color:var(--muted);font-size:12px}

.table{width:100%;border-collapse:separate;border-spacing:0}
.table th,.table td{padding:10px 10px;border-bottom:1px solid var(--border);vertical-align:top}
.table th{color:var(--muted);font-size:12px;text-align:left}
.table tr:hover td{background:rgba(59,130,246,.08)}

.input,.textarea{width:100%;border:1px solid var(--border);background:rgba(15,26,43,.65);color:var(--text);padding:10px 12px;border-radius:12px}
.textarea{min-height:180px;resize:vertical;line-height:1.5}
.label{font-size:12px;color:var(--muted);font-weight:800;margin:10px 0 6px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.status{font-size:12px;color:var(--muted);margin-top:10px;min-height:18px}
.status.ok{color:var(--success)}
.status.err{color:var(--danger)}

.note{border:1px dashed rgba(255,255,255,0.18);padding:10px 12px;border-radius:12px;color:var(--muted);font-size:12px;line-height:1.45;margin-top:10px}

.footer{padding:16px;text-align:center;color:rgba(148,163,184,.9);font-size:12px}

.modal{position:fixed;inset:0;z-index:9999}
.modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.65)}
.modal-card{position:relative;max-width:560px;width:calc(100vw - 24px);margin:10vh auto;background:rgba(17,27,45,.95);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);overflow:hidden}
.modal-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border-bottom:1px solid var(--border)}
.modal-title{font-weight:900}
.modal-body{padding:14px}