/* ============================================================
   CHO SOAN + KHO — giao dien lam viec cua giao vien
   Khac man chieu: o day nguoi dung ngoi sat man hinh, dung chuot
   va ban phim, nen chu co binh thuong va mat do thong tin cao.
   ============================================================ */

.sq-dau{padding:26px 0 6px}
.sq-dau h1{margin-bottom:6px}
.sq-dau p{max-width:70ch; margin:0}

/* ---------- Thanh the ---------- */
.sq-the-thanh{display:flex; gap:8px; flex-wrap:wrap; margin:18px 0 20px; border-bottom:2px solid var(--border)}
.sq-the-nut{
  font:inherit; font-weight:700; cursor:pointer; border:0; background:transparent;
  color:var(--muted); padding:11px 16px; border-radius:11px 11px 0 0;
  border-bottom:3px solid transparent; margin-bottom:-2px; display:flex; align-items:center; gap:8px;
}
.sq-the-nut:hover{color:var(--text); background:var(--panel-2)}
.sq-the-nut.chon{color:var(--primary); border-bottom-color:var(--primary)}
.sq-the-nut .dem{
  background:var(--panel-2); border-radius:999px; padding:1px 9px;
  font-size:.8rem; color:var(--muted);
}
.sq-the-nut.chon .dem{background:var(--primary); color:#fff}

/* ---------- Loc kho ---------- */
.sq-loc{display:flex; gap:10px; flex-wrap:wrap; align-items:center; margin-bottom:16px}
.sq-loc #oTim{min-width:min(100%,280px); flex:1}

/* ---------- The bo cau hoi ---------- */
.sq-luoi{display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:14px}
.sq-the-bo{
  background:var(--panel); border:1px solid var(--border); border-radius:16px;
  padding:16px; box-shadow:var(--shadow); display:flex; flex-direction:column; gap:11px;
  transition:.15s transform,.15s box-shadow;
}
.sq-the-bo:hover{transform:translateY(-2px); box-shadow:var(--shadow-lg)}
.sq-bo-dau{display:flex; gap:12px; align-items:flex-start}
.sq-huy{
  width:42px; height:42px; flex:none; border-radius:12px; display:grid; place-items:center;
  font-weight:800; font-size:1.2rem; color:#fff;
  background:linear-gradient(135deg,var(--primary),var(--accent));
}
.sq-bo-ten{display:flex; flex-direction:column; gap:2px; min-width:0}
.sq-bo-ten b{font-size:1.05rem; line-height:1.3}
.sq-bo-ten span{font-size:.86rem}
.sq-bo-so{display:flex; gap:6px; flex-wrap:wrap}
.sq-bo-nut{display:flex; gap:6px; flex-wrap:wrap; margin-top:auto}

/* ---------- Kho trong ---------- */
.sq-trong{text-align:center; padding:48px 20px; background:var(--panel);
  border:2px dashed var(--border); border-radius:18px}
.sq-trong .hinh{font-size:3.4rem; line-height:1}
.sq-trong h3{margin:10px 0 4px}

/* ---------- Man soan ---------- */
.sq-soan-dau{background:var(--panel); border:1px solid var(--border);
  border-radius:16px; padding:16px; margin-bottom:14px; box-shadow:var(--shadow)}
.sq-o-hang{display:grid; grid-template-columns:2fr .7fr 1.3fr 1.6fr; gap:12px}
@media (max-width:820px){ .sq-o-hang{grid-template-columns:1fr 1fr} }
@media (max-width:520px){ .sq-o-hang{grid-template-columns:1fr} }
.sq-o-hang label{display:flex; flex-direction:column; gap:5px; font-weight:700; font-size:.88rem}

/* ---------- Mot cau ---------- */
.sq-cau{
  background:var(--panel); border:1px solid var(--border); border-radius:16px;
  padding:14px; margin-bottom:12px; box-shadow:var(--shadow);
}
.sq-cau-dau{display:flex; gap:11px; align-items:flex-start}
.sq-cau-dau .so{
  width:32px; height:32px; flex:none; border-radius:9px; display:grid; place-items:center;
  background:var(--panel-2); color:var(--muted); font-weight:800;
}
.sq-hoi{flex:1; font-weight:700; resize:vertical; min-height:52px}
.sq-cau-nut{display:flex; gap:4px; flex:none}
.sq-cau-nut button{
  width:30px; height:30px; border-radius:8px; border:1px solid var(--border);
  background:var(--panel-2); color:var(--muted); cursor:pointer; font-size:.95rem; line-height:1;
}
.sq-cau-nut button:hover{background:var(--primary); color:#fff; border-color:var(--primary)}

/* 4 phuong an — mau trung voi mau tren man chieu, de co giao soan
   xong da hinh dung duoc luc chieu no nam o goc nao. */
.sq-pa{display:grid; grid-template-columns:1fr 1fr; gap:9px; margin:11px 0 0 43px}
@media (max-width:700px){ .sq-pa{grid-template-columns:1fr; margin-left:0} }
.sq-o-pa{
  display:flex; align-items:center; gap:9px; padding:7px 11px; border-radius:11px;
  border:2px solid var(--border); background:var(--panel-2); cursor:pointer;
}
.sq-o-pa .chu{
  width:26px; height:26px; flex:none; border-radius:7px; display:grid; place-items:center;
  color:#fff; font-weight:800; font-size:.85rem;
}
.sq-o-pa[data-mau="0"] .chu{background:#e21b3c}
.sq-o-pa[data-mau="1"] .chu{background:#1368ce}
.sq-o-pa[data-mau="2"] .chu{background:#d89e00}
.sq-o-pa[data-mau="3"] .chu{background:#26890c}
.sq-o-pa input[type=radio]{accent-color:var(--success); width:17px; height:17px; flex:none; cursor:pointer}
.sq-o-pa input[type=text],.sq-o-pa .q-nhap{border:0; background:transparent; padding:5px 0; font-weight:500; flex:1; min-width:0}
.sq-o-pa .q-nhap:focus{outline:0}
.sq-o-pa.dung{border-color:var(--success); background:color-mix(in srgb,var(--success) 10%,var(--panel))}

.sq-cau-them{display:flex; gap:11px; align-items:center; margin:11px 0 0 43px; flex-wrap:wrap}
@media (max-width:700px){ .sq-cau-them{margin-left:0} }
.sq-cau-them label{display:flex; align-items:center; gap:6px; font-weight:700; font-size:.88rem; color:var(--muted)}
.sq-cau-them input[data-o="gt"]{flex:1; min-width:200px}

.sq-soan-cuoi{
  display:flex; gap:10px; align-items:center; flex-wrap:wrap;
  position:sticky; bottom:0; padding:13px; margin-top:6px;
  background:color-mix(in srgb,var(--panel) 92%,transparent);
  backdrop-filter:blur(10px); border:1px solid var(--border); border-radius:14px;
  box-shadow:var(--shadow-lg);
}

/* ---------- Nhap nhanh ---------- */
.sq-hai-cot{display:grid; grid-template-columns:1fr 1fr; gap:14px}
@media (max-width:820px){ .sq-hai-cot{grid-template-columns:1fr} }
.sq-hai-cot .q-the{display:flex; flex-direction:column}
.sq-hai-cot textarea{min-height:260px; font-family:ui-monospace,"Consolas",monospace; font-size:.92rem}

.sq-xem{margin:12px 0 0; padding-left:20px}
.sq-xem li{margin-bottom:10px}
.sq-xem li div{display:flex; flex-wrap:wrap; gap:6px; margin-top:4px}
.sq-xem li span{
  background:var(--panel-2); border:1px solid var(--border);
  border-radius:8px; padding:3px 10px; font-size:.88rem;
}
.sq-xem li span.dung{
  background:color-mix(in srgb,var(--success) 16%,var(--panel));
  border-color:var(--success); font-weight:700;
}

/* ---------- Bao nhanh ---------- */
.sq-bao{
  position:fixed; left:50%; bottom:26px; transform:translateX(-50%); z-index:90;
  background:var(--text); color:var(--bg); font-weight:700;
  padding:12px 22px; border-radius:999px; box-shadow:var(--shadow-lg);
  animation:sq-len .3s cubic-bezier(.2,1.4,.4,1);
}
.sq-bao.xau{background:var(--danger); color:#fff}
@keyframes sq-len{from{opacity:0; transform:translate(-50%,16px)}}

/* ---------- Ô ảnh của một câu ---------- */
.sq-anh{
  display:flex; align-items:center; gap:11px; flex-wrap:wrap;
  margin:10px 0 0 43px; padding:9px 12px; border-radius:11px;
  border:2px dashed var(--border); background:var(--panel-2);
}
@media (max-width:700px){ .sq-anh{margin-left:0} }
.sq-anh.dangTha{border-color:var(--primary); background:color-mix(in srgb,var(--primary) 10%,var(--panel))}
.sq-anh img{max-height:74px; border-radius:9px; border:1px solid var(--border)}
.sq-anh .moi{color:var(--muted); font-size:.88rem}
.sq-anh .lien{
  border:0; background:transparent; color:var(--primary); font:inherit;
  font-weight:700; cursor:pointer; text-decoration:underline; padding:0;
}
.sq-anh .bo{
  border:1px solid var(--border); background:var(--panel); color:var(--muted);
  border-radius:8px; padding:5px 10px; font:inherit; font-size:.84rem; cursor:pointer;
}
.sq-anh .bo:hover{background:var(--danger); color:#fff; border-color:var(--danger)}
.sq-emoji{margin-left:auto; display:flex; align-items:center; gap:8px}
.sq-emoji .dangCo{font-size:1.9rem; line-height:1}

/* Bảng chọn biểu tượng */
.sq-emoji-lop{position:fixed; inset:0; z-index:95; display:grid; place-items:center;
  background:rgba(0,0,0,.55); backdrop-filter:blur(3px); padding:20px}
.sq-emoji-lop .hop{
  background:var(--panel); border-radius:18px; padding:20px; max-width:640px;
  width:100%; max-height:82vh; overflow:auto; box-shadow:var(--shadow-lg);
}
.sq-emoji-lop .nhom{margin-top:14px}
.sq-emoji-lop .nhom b{font-size:.86rem; color:var(--muted)}
.sq-emoji-lop .nhom div{display:flex; flex-wrap:wrap; gap:5px; margin-top:5px}
.sq-emoji-lop .e{
  font-size:1.6rem; line-height:1; padding:6px 8px; border-radius:9px; cursor:pointer;
  border:1px solid transparent; background:var(--panel-2);
}
.sq-emoji-lop .e:hover{border-color:var(--primary); transform:scale(1.15)}

/* ---------- Ngân hàng dựng sẵn ---------- */
.nh-lop{margin-bottom:22px}
.nh-lop h3{margin:0 0 9px; padding-bottom:6px; border-bottom:2px solid var(--border)}
.nh-mon{display:grid; grid-template-columns:repeat(auto-fill,minmax(216px,1fr)); gap:11px}
.nh-the{
  background:var(--panel); border:1px solid var(--border); border-radius:13px;
  padding:13px; box-shadow:var(--shadow); display:flex; flex-direction:column; gap:2px;
}
.nh-the b{font-size:1rem}
.nh-the span{font-size:.84rem}