:root{--primary:#0E2F66;--accent:#2F80ED;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--bg:#f1f5f9;--wa:#25D366}
*{margin:0;padding:0;box-sizing:border-box}
[hidden]{display:none!important}
body{font-family:'Inter',system-ui,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink)}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;padding:10px 18px;border-radius:10px;border:0;cursor:pointer;font-size:14px;transition:.2s;text-decoration:none}
.btn--primary{background:var(--accent);color:#fff}
.btn--primary:hover{background:var(--primary)}
.btn--ghost{background:#fff;color:var(--primary);border:1px solid var(--line)}
.btn--ghost:hover{border-color:var(--accent)}
.btn--text{background:transparent;color:var(--muted)}
.btn--text:hover{color:var(--ink)}
.btn--block{width:100%;justify-content:center;padding:13px}
.btn--sm{padding:7px 12px;font-size:13px}
.btn--danger{background:#fee2e2;color:#b91c1c}
.btn--danger:hover{background:#fecaca}

/* login */
.login{min-height:100vh;display:grid;place-items:center;padding:20px;
  background:radial-gradient(900px 600px at 70% 20%,#1c4fa0,#0e2f66 55%,#081b3f)}
.login__card{background:#fff;border-radius:18px;padding:38px 34px;width:100%;max-width:400px;text-align:center;box-shadow:0 30px 70px rgba(0,0,0,.35)}
.login__card img{margin:0 auto 12px}
.login__card h1{font-size:1.3rem;color:var(--primary)}
.login__card p{color:var(--muted);margin-bottom:22px;font-size:.9rem}
.login__err{color:#b91c1c;font-size:.88rem;margin-top:12px;min-height:18px}

/* field */
.field{margin-bottom:16px;text-align:left}
.field label{display:block;font-weight:600;font-size:.85rem;color:var(--primary);margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;border:1.5px solid var(--line);border-radius:10px;padding:11px 13px;font-family:inherit;font-size:.95rem;background:#fbfcfe;transition:.2s}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px rgba(47,128,237,.12)}
.field textarea{resize:vertical;min-height:70px}
.field .hint{font-size:.78rem;color:var(--muted);margin-top:4px}

/* app */
.topbar{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;padding:12px 20px;gap:12px;flex-wrap:wrap}
.topbar__left{display:flex;align-items:center;gap:10px;color:var(--primary)}
.topbar__actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.layout{display:grid;grid-template-columns:230px 1fr;gap:20px;max-width:1200px;margin:0 auto;padding:20px}
.side{position:sticky;top:74px;align-self:start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;display:flex;flex-direction:column;gap:2px}
.side button{text-align:left;background:none;border:0;padding:11px 14px;border-radius:9px;cursor:pointer;font-size:.92rem;color:var(--muted);font-weight:600;font-family:inherit}
.side button:hover{background:var(--bg);color:var(--ink)}
.side button.active{background:rgba(47,128,237,.12);color:var(--accent)}
.editor{min-height:60vh}
.panel-sec{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px}
.panel-sec.active{display:block;animation:fade .3s ease}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.panel-sec h2{color:var(--primary);font-size:1.25rem;margin-bottom:6px}
.panel-sec .sec-desc{color:var(--muted);font-size:.9rem;margin-bottom:22px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}
@media(max-width:640px){.grid2{grid-template-columns:1fr}.layout{grid-template-columns:1fr}.side{position:static;flex-direction:row;overflow-x:auto}}

/* image field */
.imgfield{display:flex;gap:14px;align-items:center;margin-bottom:16px}
.imgfield__thumb{width:96px;height:70px;border-radius:10px;border:1px solid var(--line);background:#f8fafc no-repeat center/contain;flex:none;overflow:hidden}
.imgfield__thumb img{width:100%;height:100%;object-fit:contain;background:#f8fafc}
.imgfield__body{flex:1;min-width:0}
.imgfield__body input{width:100%}
.imgfield__row{display:flex;gap:8px;margin-top:6px}

/* array items */
.arr{display:flex;flex-direction:column;gap:14px}
.arr-item{border:1px solid var(--line);border-radius:12px;padding:16px;background:#fbfcfe;position:relative}
.arr-item__head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.arr-item__head b{color:var(--primary);font-size:.9rem}
.arr-add{margin-top:6px}
.chip-list{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;gap:6px;background:#eef2f9;border:1px solid var(--line);border-radius:999px;padding:6px 10px 6px 14px;font-size:.88rem}
.chip button{border:0;background:none;cursor:pointer;color:#b91c1c;font-size:16px;line-height:1}
.chip-add{display:flex;gap:8px;margin-top:10px}
.chip-add input{flex:1}

.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(30px);background:var(--primary);color:#fff;
  padding:13px 22px;border-radius:12px;font-weight:600;box-shadow:0 14px 30px rgba(0,0,0,.25);opacity:0;transition:.35s;z-index:50;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.err{background:#b91c1c}