.wrap { max-width: 760px; margin: 0 auto; padding: 4px 16px 48px; }
.back { display: inline-block; margin-bottom: 10px; font-size: .85rem; font-weight: 600;
        color: var(--muted); text-decoration: none; }
.back:hover { color: var(--accent); }
h2 { font-size: 1.15rem; margin: 4px 0 6px; letter-spacing: -.01em; }

.drop {
  display: flex; flex-direction: column; align-items: center; gap: 5px;
  padding: 36px 20px; cursor: pointer; text-align: center;
  background: var(--surface); border: 2px dashed var(--border); border-radius: var(--radius);
  transition: border-color .15s, background .15s;
}
.drop:hover, .drop.over { border-color: var(--accent); background: var(--accent-soft); }
.drop-icon { font-size: 2rem; }
.drop strong { font-size: 1rem; }
.drop-sub { font-size: .84rem; color: var(--muted); }

.riengtu {
  margin: 14px 0 0; padding: 12px 14px; font-size: .84rem; line-height: 1.55;
  background: var(--ok-soft); border-radius: 10px; color: var(--text);
}
.huongdan { margin-top: 12px; font-size: .86rem; }
.huongdan summary { cursor: pointer; color: var(--muted); font-weight: 600; }
.huongdan ul { margin: 8px 0 0; padding-left: 20px; color: var(--muted); line-height: 1.7; }

.pbar { height: 8px; background: var(--border); border-radius: 999px; overflow: hidden; margin-top: 18px; }
#pfill { height: 100%; width: 0; background: var(--accent); border-radius: 999px; transition: width .25s; }
.ptext { margin: 8px 0 2px; font-size: .88rem; font-weight: 600; }

/* thẻ xác nhận từng môn */
.xn {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 13px 15px; margin-bottom: 10px;
}
.xn.bo { opacity: .45; }
.xn.can { border-color: #e0a800; }
.xn-top { display: flex; align-items: flex-start; gap: 10px; }
.xn-top input[type=checkbox] { width: 18px; height: 18px; margin-top: 2px; flex-shrink: 0; }
.xn-main { flex: 1; min-width: 0; }
.xn-when { font-size: .84rem; font-weight: 600; color: var(--muted); margin-top: 2px; }
.xn-canxem { display: inline-block; margin-top: 5px; font-size: .74rem; font-weight: 700;
  background: #fff6e0; color: #96690a; padding: 2px 8px; border-radius: 999px; }
@media (prefers-color-scheme: dark) { .xn-canxem { background: #3a2f11; color: #f0c35c; } }
.xn-grid { display: grid; grid-template-columns: 82px 1fr; gap: 8px 10px; align-items: center; margin-top: 11px; }
.xn-grid select, .xn-grid input {
  width: 100%; padding: 9px 10px; font-size: 15px; color: var(--text);
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px; outline: none;
}
.xn-grid select:focus, .xn-grid input:focus { border-color: var(--accent); }
.xn-grid label { font-size: .82rem; font-weight: 600; margin: 0; }

.dayActs { display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap; }
.dayActs .btn { flex: 1; min-width: 150px; margin-top: 0; }

/* kết quả: nhóm của tôi */
.kq { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
      box-shadow: var(--shadow); padding: 13px 15px; margin-bottom: 10px; }
.kq-head { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; margin-bottom: 3px; }
.kq-when { font-size: .84rem; font-weight: 600; color: var(--muted); }
.kq-phong { display: inline-block; font: 700 .76rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  background: var(--accent-soft); color: var(--accent); padding: 4px 8px; border-radius: 6px; }
.kq-body { margin-top: 11px; }
.kq-khac { margin-top: 9px; font-size: .82rem; color: var(--muted); }
.kq-khac b { color: var(--text); }

/* ghi danh chờ nhóm trên trang lịch cá nhân */
.cho-dong { margin: 11px 0 9px; font-size: .9rem; }
.cho-dong b { color: var(--accent); font-size: 1.05rem; }
.cho-nhac { display: inline-block; margin-top: 3px; font-size: .84rem; color: var(--ok); font-weight: 600; }
.btn-cho { background: #fff6e0; color: #96690a; border: 1px solid #f0d089; }
.btn-cho:hover { background: #ffefcc; }
@media (prefers-color-scheme: dark) {
  .btn-cho { background: #3a2f11; color: #f0c35c; border-color: #56460f; }
  .btn-cho:hover { background: #46390f; }
}
.taomo { margin-top: 12px; }
.taomo summary { cursor: pointer; font-size: .85rem; font-weight: 600; color: var(--muted); }
.taomo summary:hover { color: var(--accent); }
.taomo input[type=url] { margin-top: 9px; }

/* lời mời bật thông báo */
.tb-moi {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin: 11px 0; padding: 11px 13px; font-size: .86rem;
  background: var(--accent-soft); border-radius: 10px;
}
.tb-moi > span { flex: 1; min-width: 160px; font-weight: 600; }
.tb-moi .btn { width: auto; margin: 0; padding: 8px 14px; flex-shrink: 0; }
.tb-on, .tb-off { margin: 11px 0; padding: 10px 13px; font-size: .84rem;
  background: var(--ok-soft); border-radius: 10px; }
.tb-off { background: var(--bg); color: var(--muted); }
.lk { background: none; border: 0; padding: 0; cursor: pointer;
      color: var(--muted); text-decoration: underline; font: inherit; }

/* đồng bộ giữa các máy */
.dongbo {
  margin-top: 16px; padding: 13px 15px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.dongbo summary { cursor: pointer; font-weight: 640; font-size: .92rem; }
.dongbo summary:hover { color: var(--accent); }
.db-body { margin-top: 11px; }
.db-hang { display: flex; gap: 8px; align-items: center; margin-top: 11px; }
.db-hang .btn { margin: 0; }
.db-nhap input {
  flex: 1; min-width: 0; padding: 10px 12px; font-size: 16px; color: var(--text);
  background: var(--bg); border: 1px solid var(--border); border-radius: 9px; outline: none;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .06em;
}
.db-nhap input:focus { border-color: var(--accent); }
.db-nhan { margin: 14px 0 6px; font-size: .84rem; font-weight: 600; }
.db-ma { display: flex; align-items: center; gap: 8px; }
.db-ma code {
  flex: 1; min-width: 0; padding: 12px; text-align: center;
  font: 700 1.1rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .12em;
  color: var(--accent); background: var(--accent-soft); border-radius: 9px;
  overflow-x: auto; white-space: nowrap;
}
.btn-sm {
  flex-shrink: 0; padding: 10px 14px; font: 600 .84rem/1 inherit; cursor: pointer;
  color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: 9px;
}
.btn-sm:hover { border-color: var(--accent); color: var(--accent); }