/* =========================================================
   FORM PHẢN ÁNH – KIẾN NGHỊ (nút trên topbar + hộp thoại)
   Dùng biến màu của app.css (--red thực chất là xanh teal huy hiệu xã).
   Lưu ý: mọi phần tử có [hidden] mà ta gán display riêng đều phải có
   rule [hidden]{display:none} đi kèm (class có display thắng UA stylesheet).
   ========================================================= */

/* ---------- nút mở form (topbar) ---------- */
.fb-open{margin-left:12px;display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 15px;
  border-radius:11px;background:var(--gold);color:#3a2a07;font-weight:800;font-size:13px;flex:none;
  white-space:nowrap;box-shadow:0 4px 12px -4px rgba(0,0,0,.35);transition:transform .15s,filter .15s}
.fb-open:hover{filter:brightness(1.06);transform:translateY(-1px)}
.fb-open svg{flex:none}
.fb-open-short{display:none}

/* ---------- hộp thoại ---------- */
.fb-modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;
  padding:20px;background:rgba(10,32,28,.55);backdrop-filter:blur(2px)}
.fb-modal[hidden]{display:none}
.fb-sheet{width:100%;max-width:640px;max-height:min(92dvh,920px);display:flex;flex-direction:column;
  background:var(--card);border-radius:20px;box-shadow:var(--shadow-l);overflow:hidden;
  animation:fbIn .28s var(--ease)}
@keyframes fbIn{from{opacity:0;transform:translateY(14px) scale(.985)}to{opacity:1;transform:none}}

.fb-head{display:flex;align-items:flex-start;gap:12px;padding:18px 20px 16px;color:#fff;flex:none;
  background:linear-gradient(100deg,var(--red-deep),var(--red) 70%)}
.fb-head h2{margin:0 0 3px;font-size:18px;font-weight:800;line-height:1.25}
.fb-head p{margin:0;font-size:12.5px;opacity:.88;line-height:1.45}
.fb-x{margin-left:auto;flex:none;width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.16);
  color:#fff;font-size:15px;display:grid;place-items:center}
.fb-x:hover{background:rgba(255,255,255,.28)}

.fb-form{display:flex;flex-direction:column;min-height:0;flex:1}
.fb-form[hidden]{display:none}
.fb-body{overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;
  padding:18px 20px;display:grid;gap:15px;align-content:start}
.fb-foot{flex:none;padding:12px 20px 16px;border-top:1px solid var(--line-2);background:var(--card)}

.fb-row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.fb-row-addr{display:grid;grid-template-columns:110px minmax(0,1fr);gap:12px}
.fb-row2>*,.fb-row-addr>*{min-width:0}

.fb-field{display:flex;flex-direction:column;gap:6px;min-width:0}
.fb-label{font-size:13px;font-weight:700;color:var(--ink)}
.fb-label i{font-style:normal;color:#C0392B;margin-left:2px}
.fb-label small{font-weight:500;color:var(--ink-faint);margin-left:4px}
.fb-field input[type="text"],.fb-field input[type="tel"],.fb-field select,.fb-field textarea{
  width:100%;min-width:0;border:1px solid var(--line);border-radius:12px;padding:11px 13px;
  background:#fff;color:var(--ink);font:inherit;font-size:14.5px;font-weight:500;outline:0;
  transition:border-color .15s,box-shadow .15s}
.fb-field textarea{resize:vertical;min-height:96px;line-height:1.5}
.fb-field select{appearance:auto}
.fb-field input:focus,.fb-field select:focus,.fb-field textarea:focus{border-color:var(--red);box-shadow:0 0 0 3px rgba(14,140,130,.14)}
.fb-field [aria-invalid="true"]{border-color:#C0392B;box-shadow:0 0 0 3px rgba(192,57,43,.10)}
.fb-err{margin:0;font-size:12px;font-weight:600;color:#B03A2E}
.fb-err[hidden]{display:none}
.fb-hint{margin:0;font-size:12px;color:var(--ink-faint);line-height:1.45}
.fb-count{text-align:right;font-family:var(--mono);font-size:11px;color:var(--ink-faint)}
.fb-count.over{color:#B03A2E;font-weight:700}

/* ô bẫy bot: người thật không thấy, không bấm tới được */
.fb-hp{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}

/* vị trí hiện tại */
.fb-loc{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.fb-btn{display:inline-flex;align-items:center;gap:7px;height:40px;padding:0 14px;border-radius:11px;
  border:1.5px solid var(--red);color:var(--red-deep);background:#fff;font-weight:700;font-size:13.5px;
  transition:background .15s}
.fb-btn:hover{background:rgba(14,140,130,.07)}
.fb-btn[disabled]{opacity:.55;pointer-events:none}
.fb-loc-st{font-size:12.5px;font-weight:600;color:var(--ink-soft);min-width:0;overflow-wrap:anywhere}
.fb-loc-st.ok{color:var(--leaf-deep)}
.fb-loc-st.err{color:#B03A2E}
.fb-clear{width:28px;height:28px;border-radius:50%;background:var(--paper-2);color:var(--ink-soft);font-size:12px}
.fb-clear[hidden]{display:none}

/* ảnh đính kèm */
.fb-pick{display:inline-flex;align-items:center;gap:8px;align-self:flex-start}
.fb-thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(84px,1fr));gap:8px}
.fb-thumbs:empty{display:none}
.fb-thumb{position:relative;aspect-ratio:1;border-radius:11px;overflow:hidden;border:1px solid var(--line);background:var(--paper-2)}
.fb-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.fb-thumb button{position:absolute;top:4px;right:4px;width:24px;height:24px;border-radius:50%;
  background:rgba(0,0,0,.66);color:#fff;font-size:12px;line-height:1;display:grid;place-items:center}
.fb-thumb span{position:absolute;left:0;right:0;bottom:0;padding:2px 5px;background:rgba(0,0,0,.55);
  color:#fff;font-size:10px;font-family:var(--mono);text-align:right}

/* chân form */
.fb-privacy{margin:0 0 10px;font-size:11.5px;color:var(--ink-faint);line-height:1.5}
.fb-formerr{margin:0 0 10px;padding:10px 12px;border-radius:10px;background:#FDECEA;color:#8A2F28;
  font-size:13px;font-weight:600;line-height:1.45}
.fb-formerr[hidden]{display:none}
.fb-submit{width:100%;height:48px;border-radius:13px;font-weight:800;font-size:15px;color:#fff;
  background:linear-gradient(100deg,var(--red-deep),var(--red));box-shadow:0 8px 18px -10px rgba(10,106,97,.8);
  transition:filter .15s,transform .1s}
.fb-submit:hover{filter:brightness(1.07)}
.fb-submit:active{transform:scale(.985)}
.fb-submit[disabled]{opacity:.65;pointer-events:none}

/* màn hình "đã gửi" */
.fb-done{padding:36px 24px 30px;display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center;overflow-y:auto}
.fb-done[hidden]{display:none}
.fb-done-ic{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:rgba(79,174,85,.14);color:var(--leaf-deep)}
.fb-done h3{margin:6px 0 0;font-size:20px;font-weight:800}
.fb-done p{margin:0;max-width:420px;font-size:14px;line-height:1.55;color:var(--ink-soft)}
.fb-code{margin:6px 0;padding:10px 20px;border-radius:12px;background:var(--paper-2);border:1px dashed var(--line);
  font-family:var(--mono);font-size:22px;font-weight:700;letter-spacing:.06em;color:var(--ink)}
.fb-done-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:8px}

/* ---------- điện thoại: bottom sheet ---------- */
@media (max-width:760px){
  .fb-open{margin-left:auto;height:38px;padding:0 11px;gap:6px}
  .fb-open-tx{display:none}
  .fb-open-short{display:inline}
  .fb-modal{align-items:flex-end;padding:0}
  .fb-sheet{max-width:none;max-height:94dvh;border-radius:22px 22px 0 0;animation-name:fbUp}
  @keyframes fbUp{from{transform:translateY(40px);opacity:.6}to{transform:none;opacity:1}}
  .fb-head{padding:16px 16px 14px}
  .fb-body{padding:16px;gap:14px}
  .fb-foot{padding:10px 16px calc(14px + env(safe-area-inset-bottom))}
  .fb-row2{grid-template-columns:minmax(0,1fr)}
  /* ≥16px để iOS không tự phóng to khi chạm vào ô nhập */
  .fb-field input[type="text"],.fb-field input[type="tel"],.fb-field select,.fb-field textarea{font-size:16px}
}