body {
  font-family: "Poppins", sans-serif;
}
button, input, select {
  border-radius: 0.5rem;
  border: 1px solid #ccc;
  padding: 0.4rem 0.8rem;
}
button {
  background-color: #16a34a;
  color: white;
  font-weight: 600;
}
button:hover {
  background-color: #15803d;
}

:root { --bg:#f5f7fb; --card:#fff; --ink:#111; --muted:#667; --accent:#0ea5e9; --border:#e5e7eb; --ok:#10b981; --err:#ef4444; }
*{box-sizing:border-box} html,body{margin:0;padding:0;font:14px/1.6 system-ui,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;color:var(--ink);background:var(--bg)}
.page{min-height:100vh}
.topbar{position:sticky;top:0;z-index:10;background:var(--card);border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;padding:10px 16px}
.topbar .brand{font-weight:800}
.topbar nav a{margin-left:12px;text-decoration:none;color:var(--muted)} .topbar nav a.active,.topbar nav a:hover{color:var(--ink)}
.container{max-width:1100px;margin:20px auto;padding:0 12px}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px;margin:12px 0;box-shadow:0 2px 6px rgba(0,0,0,.04)}
.w-420{max-width:420px;margin:60px auto}
.w-300{width:300px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.inline{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.stack>*{display:block;margin:6px 0}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.space-between{justify-content:space-between}
.btn{background:var(--accent);color:#fff;border:0;padding:10px 14px;border-radius:8px;cursor:pointer}
.btn.secondary{background:#9aa} .btn.danger{background:var(--err)}
input,select,textarea{width:100%;padding:8px;border:1px solid var(--border);border-radius:8px;background:#fff}
.table{width:100%;border-collapse:collapse}
.table th,.table td{border:1px solid var(--border);padding:8px;text-align:left}
.table th{background:#f0f4f8}
.tabs{display:flex;gap:6px;margin:10px 0}
.tab{border:1px solid var(--border);padding:6px 10px;background:#fff;border-radius:8px;cursor:pointer}
.tab.active{background:#eef6ff;border-color:#bcdcff}
.tabpane.hidden,.hidden{display:none}
.msg{margin-top:12px;color:var(--err)}
.qimg{max-width:100%;display:block;margin:8px 0}
.thumb{width:48px;height:32px;object-fit:cover;border:1px solid var(--border);border-radius:6px}
.ok{color:var(--ok);font-weight:bold}
.err{color:#fff;background:var(--err);padding:2px 6px;border-radius:6px}
@media (max-width:800px){ .grid2{grid-template-columns:1fr} .w-300{width:100%} }