/* =====================================================================
   Form (taophieu.com) — giao diện (phong cách tối giản kiểu Tally / OpnForm)
   Nền trắng ngà, 1 màu nhấn chàm, viền mảnh thay bóng đổ, icon nét mảnh, chữ Be Vietnam Pro.
   ===================================================================== */
:root {
  --bg: #f6f6f7; --surface: #fff; --text: #18181b; --text-2: #3f3f46; --muted: #71717a; --faint: #a1a1aa;
  --line: #e7e7ea; --line-2: #d4d4d8; --hover: #f4f4f5;
  --pri: #4f46e5; --pri-hover: #4338ca; --pri-soft: #eef2ff; --pri-ring: rgba(79, 70, 229, .18);
  --ok: #15803d; --ok-soft: #f0fdf4; --ok-line: #bbf7d0;
  --warn: #b45309; --warn-soft: #fffbeb; --warn-line: #fde68a;
  --bad: #dc2626; --bad-soft: #fef2f2; --bad-line: #fecaca;
  --r: 14px; --r-sm: 10px;
  --shadow: 0 1px 2px rgba(24, 24, 27, .04), 0 1px 3px rgba(24, 24, 27, .04);
  --shadow-lg: 0 12px 32px rgba(24, 24, 27, .14);
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text);
  font: 15.5px/1.55 "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased; -webkit-text-size-adjust: 100%; }
main { max-width: 680px; margin: 0 auto; padding: 24px 16px 48px; }
main.wide { max-width: 920px; }
h1 { font-size: 24px; line-height: 1.3; font-weight: 700; letter-spacing: -.02em; margin: 0 0 6px; }
h2 { font-size: 17px; line-height: 1.4; font-weight: 600; letter-spacing: -.01em; margin: 0 0 12px; }
p { margin: 0 0 10px; }
a { color: var(--pri); text-decoration: none; } a:hover { text-decoration: underline; }
.ic { flex: none; vertical-align: -3px; }
.muted { color: var(--muted); } .faint { color: var(--faint); } .small { font-size: 13.5px; }
.center { text-align: center; } .pad { padding: 44px 20px; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.between { justify-content: space-between; } .nowrap { flex-wrap: nowrap; } .end { justify-content: flex-end; margin-top: 16px; }
.grow { flex: 1 1 0; min-width: 0; }
.mt { margin-top: 14px; } .mb { margin-bottom: 14px; }

/* ---------- Thẻ ---------- */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 20px;
  margin-bottom: 14px; box-shadow: var(--shadow); }
.card > h2:first-child { margin-top: -2px; }
.head { padding: 24px 22px; border-top: 4px solid var(--pri); }
.head .desc { color: var(--text-2); margin-top: 4px; white-space: pre-line; }
.meta { margin-top: 14px; gap: 14px; color: var(--muted); font-size: 13.5px; }
.meta span { display: inline-flex; align-items: center; gap: 6px; }

/* Ô biểu tượng tròn (trạng thái rỗng, thành công…) */
.big-icon { width: 56px; height: 56px; margin: 0 auto 14px; border-radius: 50%; display: grid; place-items: center;
  background: var(--pri-soft); color: var(--pri); }
.big-icon.ok { background: var(--ok-soft); color: var(--ok); }
.big-icon.bad { background: var(--bad-soft); color: var(--bad); }
.big-icon.muted { background: var(--hover); color: var(--muted); }

/* ---------- Ô nhập ---------- */
label.lb { display: block; font-weight: 600; font-size: 14.5px; margin: 18px 0 7px; color: var(--text); }
label.lb:first-child { margin-top: 0; }
label.lb .req { color: var(--bad); margin-left: 2px; }
label.lb .muted { font-weight: 400; }
input[type=text], input[type=search], input[type=number], input[type=date], input[type=tel], input[type=password], select, textarea {
  width: 100%; font: inherit; color: var(--text); background: #fff; padding: 11px 13px; min-height: 46px;
  border: 1px solid var(--line-2); border-radius: var(--r-sm); transition: border-color .15s, box-shadow .15s; }
input::placeholder, textarea::placeholder { color: var(--faint); }
input:hover, select:hover, textarea:hover { border-color: #a1a1aa; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--pri); box-shadow: 0 0 0 4px var(--pri-ring); }
input:disabled { background: var(--hover); color: var(--muted); }
select { appearance: none; padding-right: 38px; cursor: pointer;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 12px center; }
textarea { min-height: 96px; resize: vertical; line-height: 1.5; }
.search { position: relative; }
.search .ic { position: absolute; left: 13px; top: 14px; color: var(--faint); pointer-events: none; }
.search input { padding-left: 40px; }

/* Lựa chọn (radio / checkbox) kiểu thẻ */
.choice { display: flex; align-items: center; gap: 12px; padding: 12px 14px; margin-bottom: 8px; cursor: pointer;
  border: 1px solid var(--line-2); border-radius: var(--r-sm); background: #fff; transition: border-color .15s, background .15s; }
.choice:hover { border-color: #a1a1aa; }
.choice input[type=radio], .choice input[type=checkbox] { appearance: none; width: 20px; height: 20px; margin: 0; flex: none; border: 1.5px solid var(--line-2);
  border-radius: 50%; display: grid; place-items: center; background: #fff; cursor: pointer; }
.choice input[type=checkbox] { border-radius: 6px; }
.choice input:checked { border-color: var(--pri); background: var(--pri); }
.choice input[type=radio]:checked { background: #fff; border-width: 6px; }
.choice input[type=checkbox]:checked::after { content: ""; width: 5px; height: 10px; border: solid #fff; border-width: 0 2px 2px 0;
  transform: rotate(45deg) translate(-1px, -1px); }
.choice:has(input:checked) { border-color: var(--pri); background: var(--pri-soft); }
.choice:has(input:disabled) { opacity: .55; cursor: default; }
.choice:has(input:focus-visible) { box-shadow: 0 0 0 4px var(--pri-ring); }
.choice .sub { display: block; font-size: 13px; color: var(--muted); }
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; } .seg .choice { margin: 0; }
.hint { margin: -2px 0 8px; }

/* Từng câu hỏi trên phiếu */
.q { padding: 4px 0 6px; }
.q + .q { border-top: 1px solid var(--line); padding-top: 18px; margin-top: 12px; }
.q.err .lb { color: var(--bad); }
.q.err input, .q.err select, .q.err textarea, .q.err .choice { border-color: var(--bad); }
.q .err-msg { display: none; color: var(--bad); font-size: 13px; margin-top: 6px; }
.q.err .err-msg { display: flex; gap: 6px; align-items: center; }

/* ---------- Nút ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: inherit; font-weight: 600; font-size: 14.5px;
  min-height: 42px; padding: 9px 16px; border-radius: var(--r-sm); cursor: pointer; text-decoration: none !important;
  border: 1px solid var(--line-2); background: #fff; color: var(--text); transition: background .15s, border-color .15s, box-shadow .15s; }
.btn:hover { background: var(--hover); }
.btn:focus-visible { outline: none; box-shadow: 0 0 0 4px var(--pri-ring); }
.btn.pri { background: var(--pri); border-color: var(--pri); color: #fff; }
.btn.pri:hover { background: var(--pri-hover); border-color: var(--pri-hover); }
.btn.soft { background: var(--pri-soft); border-color: transparent; color: var(--pri); }
.btn.soft:hover { background: #e0e7ff; }
.btn.ghost { background: transparent; border-color: transparent; color: var(--text-2); }
.btn.ghost:hover { background: var(--hover); }
.btn.danger { background: var(--bad); border-color: var(--bad); color: #fff; }
.btn.danger:hover { background: #b91c1c; }
.btn.danger-soft { color: var(--bad); }
.btn.sm { min-height: 36px; padding: 6px 12px; font-size: 14px; }
.btn.block { width: 100%; min-height: 52px; font-size: 16px; margin-top: 22px; }
.btn:disabled { opacity: .55; cursor: default; }
.btn.icon-only { width: 36px; padding: 0; }
button.link { background: none; border: 0; padding: 0; color: var(--pri); font: inherit; cursor: pointer; }
button.link:hover { text-decoration: underline; }
.icon-btn { display: inline-grid; place-items: center; width: 34px; height: 34px; border: 0; border-radius: 8px;
  background: none; color: var(--muted); cursor: pointer; }
.icon-btn:hover { background: var(--hover); color: var(--text); }
.icon-btn.danger:hover { background: var(--bad-soft); color: var(--bad); }

/* ---------- Nhãn trạng thái, tiến độ ---------- */
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: 600; padding: 3px 10px;
  border-radius: 99px; border: 1px solid transparent; white-space: nowrap; }
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge.plain::before { display: none; }
.b-ok { background: var(--ok-soft); color: var(--ok); border-color: var(--ok-line); }
.b-warn { background: var(--warn-soft); color: var(--warn); border-color: var(--warn-line); }
.b-bad { background: var(--bad-soft); color: var(--bad); border-color: var(--bad-line); }
.b-mute { background: var(--hover); color: var(--muted); border-color: var(--line); }
.progress { height: 6px; background: var(--hover); border-radius: 99px; overflow: hidden; margin: 10px 0 6px; }
.progress > div { height: 100%; background: var(--ok); border-radius: 99px; transition: width .3s; }

/* Hộp thông báo */
.note { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-radius: var(--r); margin-bottom: 14px;
  border: 1px solid var(--line); background: #fff; font-size: 14.5px; }
.note > .ic { margin-top: 2px; }
.note-ok { background: var(--ok-soft); border-color: var(--ok-line); color: #14532d; }
.note-warn { background: var(--warn-soft); border-color: var(--warn-line); color: #78350f; }
.note-info { background: var(--pri-soft); border-color: #c7d2fe; color: #312e81; }

/* ---------- Trang điền phiếu ---------- */
.who { display: flex; align-items: center; gap: 12px; }
.avatar { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; flex: none;
  background: var(--pri-soft); color: var(--pri); font-weight: 700; font-size: 15px; }
.avatar.sm { width: 30px; height: 30px; font-size: 12.5px; }
.success { text-align: center; padding: 40px 22px; }
.success p { margin: 8px 0 4px; color: var(--text-2); }

.ad { margin: 0 0 14px; }
.ad-label { display: block; font-size: 11px; font-weight: 600; color: var(--faint); text-transform: uppercase; letter-spacing: .06em; margin: 0 0 6px 2px; }
.ad-box { border: 1px dashed var(--line-2); border-radius: var(--r); padding: 30px 12px; text-align: center; color: var(--faint); font-size: 13.5px; background: #fafafa; }

.foot { text-align: center; font-size: 13.5px; color: var(--muted); padding: 10px 8px 24px; }
.foot p { margin: 6px 0; }
.foot .sep { color: var(--line-2); margin: 0 6px; }
.warn-line { display: inline-flex; gap: 6px; align-items: center; color: var(--warn); }
.brandline { display: inline-flex; gap: 6px; align-items: center; color: var(--faint); }

.spinner { width: 28px; height: 28px; margin: 0 auto 12px; border: 3px solid var(--pri-soft); border-top-color: var(--pri);
  border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Thông báo nổi + hộp thoại ---------- */
.toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 140px); max-width: min(92vw, 460px);
  background: #18181b; color: #fff; padding: 12px 18px; border-radius: 12px; font-size: 14.5px; box-shadow: var(--shadow-lg);
  transition: transform .25s ease; z-index: 60; }
.toast.show { transform: translate(-50%, 0); } .toast.err { background: var(--bad); }
.modal { position: fixed; inset: 0; background: rgba(24, 24, 27, .45); display: none; align-items: flex-end; justify-content: center;
  z-index: 50; backdrop-filter: blur(2px); }
.modal.show { display: flex; }
.modal .sheet { background: #fff; width: 100%; max-width: 520px; max-height: 90vh; overflow: auto; border-radius: 20px 20px 0 0;
  padding: 22px; box-shadow: var(--shadow-lg); }
.modal .sheet h2 { font-size: 19px; }
.menu-btn { display: flex; width: 100%; align-items: center; gap: 12px; padding: 12px 10px; border: 0; border-radius: var(--r-sm);
  background: none; font: inherit; color: var(--text); cursor: pointer; text-align: left; }
.menu-btn:hover { background: var(--hover); }
.menu-btn.danger { color: var(--bad); } .menu-btn.danger:hover { background: var(--bad-soft); }
@media (min-width: 640px) { .modal { align-items: center; } .modal .sheet { border-radius: 20px; } }

/* =====================================================================
   MÀN NGƯỜI TẠO PHIẾU
   ===================================================================== */
.nav { position: sticky; top: 0; z-index: 20; background: rgba(255, 255, 255, .92); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line); }
.nav:empty { display: none; }
.nav-inner { max-width: 920px; margin: 0 auto; padding: 10px 16px; display: flex; align-items: center; gap: 12px; }
.logo { display: inline-flex; align-items: center; gap: 9px; font-weight: 700; font-size: 16px; color: var(--text) !important;
  text-decoration: none !important; letter-spacing: -.01em; }
.logo-mark { width: 30px; height: 30px; border-radius: 8px; background: var(--pri); color: #fff; display: grid; place-items: center; }
.nav-links { display: flex; gap: 4px; margin-left: 12px; }
.nav-links a { padding: 7px 12px; border-radius: 8px; color: var(--muted); font-weight: 500; font-size: 14.5px; text-decoration: none; }
.nav-links a:hover { background: var(--hover); color: var(--text); }
.nav-links a.on { color: var(--text); background: var(--hover); }
.nav-user { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.nav-user .name { font-size: 14px; color: var(--text-2); max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@media (max-width: 560px) { .nav-links, .nav-user .name { display: none; } }

.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin: 4px 0 18px; }
.page-head h1 { margin: 0; }
.page-head p { margin: 4px 0 0; }
.back { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); font-size: 14px; font-weight: 500;
  margin-bottom: 14px; text-decoration: none !important; }
.back:hover { color: var(--text); }

/* Danh sách phiếu */
.form-grid { display: grid; gap: 12px; }
.formcard { margin: 0; padding: 18px 20px; }
.formcard h2 { margin: 0; font-size: 16.5px; }
.formcard .sub { color: var(--muted); font-size: 13.5px; margin-top: 4px; display: flex; gap: 6px 14px; flex-wrap: wrap; }
.formcard .sub span { display: inline-flex; gap: 5px; align-items: center; }
.formcard .count { font-size: 13.5px; color: var(--text-2); }
.formcard .count b { color: var(--text); }
.formcard .actions { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); }

/* Ô số liệu */
.tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 14px 0 4px; }
.tile { border: 1px solid var(--line); border-radius: var(--r-sm); padding: 12px 14px; background: #fff; }
.tile .num { font-size: 24px; font-weight: 700; letter-spacing: -.02em; line-height: 1.2; }
.tile .lbl { font-size: 13px; color: var(--muted); }
.tile.ok .num { color: var(--ok); } .tile.bad .num { color: var(--bad); }

/* Bước trong màn soạn */
.step { display: flex; align-items: center; gap: 10px; margin: -2px 0 14px; }
.step h2 { margin: 0; }
.step-no { width: 26px; height: 26px; border-radius: 50%; background: var(--pri-soft); color: var(--pri); font-weight: 700;
  font-size: 13.5px; display: grid; place-items: center; flex: none; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { display: inline-flex; align-items: center; gap: 7px; padding: 8px 13px; border-radius: 99px; border: 1px solid var(--line-2);
  background: #fff; cursor: pointer; font: inherit; font-size: 14px; font-weight: 500; color: var(--text-2); text-decoration: none !important; }
.chip:hover { border-color: #a1a1aa; color: var(--text); }
.chip.on { background: var(--pri); border-color: var(--pri); color: #fff; }
.chip.dashed { border-style: dashed; color: var(--muted); }
.tpl-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 8px; } /* điện thoại: 2 cột */
.tpl { display: flex; flex-direction: column; justify-content: flex-start; gap: 2px; text-align: left; padding: 12px 14px; border: 1px solid var(--line-2); border-radius: var(--r-sm); background: #fff;
  cursor: pointer; font: inherit; color: var(--text); }
.tpl:hover { border-color: #a1a1aa; }
.tpl b { display: block; font-size: 14.5px; font-weight: 600; }
.tpl span { font-size: 12.5px; color: var(--muted); }
.tpl.on { border-color: var(--pri); background: var(--pri-soft); box-shadow: 0 0 0 1px var(--pri) inset; }
details.quick { margin-top: 14px; border-top: 1px solid var(--line); padding-top: 12px; }
details.quick summary { cursor: pointer; color: var(--pri); font-weight: 600; font-size: 14.5px; list-style: none; display: inline-flex; gap: 6px; align-items: center; }
details.quick summary::-webkit-details-marker { display: none; }

.q-row { border: 1px solid var(--line); border-radius: var(--r); padding: 14px; margin-bottom: 10px; background: #fff; }
.q-row:focus-within { border-color: var(--pri); box-shadow: 0 0 0 4px var(--pri-ring); }
.q-row .q-top { display: flex; gap: 8px; align-items: center; }
.q-row .q-no { width: 24px; color: var(--faint); font-weight: 600; font-size: 13.5px; text-align: center; flex: none; }
.q-row .q-top select { width: auto; flex: 0 0 150px; }
.q-row .opts { margin-top: 10px; padding-left: 32px; }
.opt-row { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; }
.opt-row textarea { flex: 1; min-width: 0; min-height: 0; resize: none; overflow: hidden; border-color: transparent; background: none; padding-left: 4px; }
.opt-row textarea:hover { border-color: var(--line); }
.opt-row textarea:focus { border-color: var(--pri); background: #fff; }
.opt-row .icon-btn { width: 30px; height: 30px; flex: none; color: var(--faint); }
.opt-row { align-items: flex-start; } .opt-row > .opt-mark { margin-top: 15px; } .opt-row > .opt-mark.num { margin-top: 13px; } .opt-row > .icon-btn { margin-top: 8px; }
.opt-add, .opt-add > .opt-mark { align-items: center; margin-top: 0 !important; }
.opt-mark { flex: none; width: 16px; height: 16px; border: 1.5px solid var(--line-2); border-radius: 50%; }
.opt-mark.checkbox { border-radius: 4px; }
.opt-mark.num { border: 0; width: 18px; height: auto; color: var(--faint); font-size: 13.5px; text-align: right; }
.opt-add { min-height: 30px; padding-left: 0; } .opt-add .link { padding-left: 4px; }
.opt-other { flex: 1; padding: 12px 4px 6px; color: var(--text-2); font-size: 14.5px; }
.q-row .q-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 8px; padding-left: 32px; }
.toggle { display: inline-flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--text-2); cursor: pointer; user-select: none; }
.toggle input { appearance: none; width: 34px; height: 20px; border-radius: 99px; background: var(--line-2); position: relative;
  cursor: pointer; transition: background .15s; margin: 0; }
.toggle input::after { content: ""; position: absolute; top: 2px; left: 2px; width: 16px; height: 16px; border-radius: 50%;
  background: #fff; box-shadow: 0 1px 2px rgba(0, 0, 0, .2); transition: transform .15s; }
.toggle input:checked { background: var(--pri); } .toggle input:checked::after { transform: translateX(14px); }
.add-below { display: flex; align-items: center; justify-content: center; gap: 6px; width: 100%; margin-top: 10px; padding: 8px;
  background: none; border: 1px dashed var(--line-2); border-radius: var(--r-sm); color: var(--muted); font: inherit;
  font-size: 14px; font-weight: 500; cursor: pointer; }
.add-below:hover { border-color: var(--pri); color: var(--pri); background: var(--pri-soft); }
@media (max-width: 520px) {
  .q-row .q-top { flex-wrap: wrap; } .q-row .q-top select { flex: 1 1 100%; margin-left: 32px; }
}
/* Thanh lưu dính đáy: [Xem trước] [Lưu ........] — nút Lưu chiếm phần còn lại */
.save-bar { position: sticky; bottom: 0; display: flex; gap: 10px; padding: 12px 0 16px;
  background: linear-gradient(to top, var(--bg) 70%, transparent); }
.save-bar .btn { min-height: 52px; font-size: 16px; padding: 0 18px; }
.save-bar .btn.pri { flex: 1 1 auto; }

/* Danh sách người / bảng */
.list-item { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 11px 0; border-bottom: 1px solid var(--line); }
.list-item:last-child { border-bottom: 0; }
a.list-item { color: inherit; text-decoration: none !important; }
a.list-item:hover { background: var(--hover); margin: 0 -10px; padding: 11px 10px; border-radius: 8px; }
.person { display: flex; align-items: center; gap: 10px; min-width: 0; }
.person .nm { font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.table-wrap { overflow-x: auto; margin: 0 -4px; }
table.stat { width: 100%; border-collapse: collapse; font-size: 14px; }
table.stat th { text-align: left; color: var(--muted); font-weight: 500; font-size: 12.5px; text-transform: uppercase; letter-spacing: .04em;
  padding: 8px 6px; border-bottom: 1px solid var(--line); }
table.stat td { padding: 10px 6px; border-bottom: 1px solid var(--line); }
table.stat tbody tr:last-child td { border-bottom: 0; }
table.stat tr.click { cursor: pointer; } table.stat tr.click:hover td { background: var(--hover); }
.copybox { width: 100%; font: 14px/1.5 ui-monospace, Consolas, monospace; background: #fafafa; }
.qr-wrap { margin: 18px auto 4px; width: 196px; padding: 10px; border: 1px solid var(--line); border-radius: var(--r); background: #fff; }
.qr { display: block; width: 174px; height: 174px; image-rendering: pixelated; }

/* Đăng nhập */
.auth { max-width: 420px; margin: 6vh auto 0; }
.auth .brand-big { display: flex; flex-direction: column; align-items: center; text-align: center; margin-bottom: 22px; }
.auth .brand-big .logo-mark { width: 48px; height: 48px; border-radius: 14px; margin-bottom: 14px; }
.tabs { display: grid; grid-template-columns: 1fr 1fr; padding: 4px; gap: 4px; background: var(--hover); border-radius: 12px; margin-bottom: 18px; }
.tabs button { border: 0; padding: 9px; border-radius: 9px; background: none; font: inherit; font-weight: 600; font-size: 14.5px; color: var(--muted); cursor: pointer; }
.tabs button.on { background: #fff; color: var(--text); box-shadow: var(--shadow); }

/* ---------- Xem trước phiếu ---------- */
.pv { position: fixed; inset: 0; z-index: 70; background: #e4e4e7; display: flex; flex-direction: column; }
.pv-bar { display: flex; align-items: center; gap: 10px; padding: 10px 16px; background: #fff; border-bottom: 1px solid var(--line); }
.pv-title { display: flex; align-items: center; gap: 8px; font-weight: 600; margin-right: auto; }
.pv-switch { display: inline-flex; padding: 3px; gap: 3px; background: var(--hover); border-radius: 10px; }
.pv-switch button { display: inline-flex; align-items: center; gap: 6px; border: 0; padding: 6px 12px; border-radius: 8px;
  background: none; font: inherit; font-size: 14px; font-weight: 500; color: var(--muted); cursor: pointer; }
.pv-switch button.on { background: #fff; color: var(--text); box-shadow: var(--shadow); }
.pv-stage { flex: 1; overflow: auto; display: flex; justify-content: center; align-items: flex-start; padding: 24px 16px; }
.pv iframe { border: 0; background: var(--bg); display: block; }
.pv[data-mode=desktop] .pv-stage { padding: 0; }
.pv[data-mode=desktop] iframe { width: 100%; height: 100%; }
/* Khung điện thoại: bên trong rộng 390 (410 − viền 2×10), viền bo như máy thật */
.pv[data-mode=phone] iframe { width: 410px; height: min(780px, calc(100vh - 120px)); border-radius: 36px;
  border: 10px solid #18181b; box-shadow: var(--shadow-lg); }
@media (max-width: 600px) {
  .pv-switch, .pv-hide { display: none; }
  .pv[data-mode] .pv-stage { padding: 0; }
  .pv[data-mode] iframe { width: 100%; height: 100%; border: 0; border-radius: 0; box-shadow: none; }
}

/* ---------- Dạng câu mới (đợt 1, 2026-10-17) ---------- */
.q-help { color: var(--muted); font-size: 13.5px; margin: -3px 0 9px; white-space: pre-line; }
/* Tiêu đề phần: chia phiếu thành mục */
.q-section { margin: 26px -20px 6px; padding: 18px 20px 4px; border-top: 1px solid var(--line); }
.q-section:first-child { margin-top: -4px; border-top: 0; padding-top: 0; }
.q-section h2 { font-size: 18px; margin: 0 0 4px; color: var(--pri); }
.q-section + .q { border-top: 0; margin-top: 4px; }
/* Lựa chọn "Khác…" có ô gõ */
.choice.other { padding: 6px 8px 6px 14px; }
.choice .other-text { flex: 1; min-width: 0; width: auto; min-height: 36px; padding: 6px 10px; border-color: transparent; background: transparent; }
.choice .other-text:focus { background: #fff; border-color: var(--line-2); box-shadow: none; }
/* Thang điểm: hàng ô số bấm được */
.scale { display: grid; grid-template-columns: repeat(var(--n), minmax(0, 1fr)); gap: 6px; }
.scale label { position: relative; cursor: pointer; }
.scale input { position: absolute; opacity: 0; pointer-events: none; }
.scale span { display: grid; place-items: center; height: 44px; border: 1px solid var(--line-2); border-radius: var(--r-sm);
  font-weight: 600; color: var(--text-2); background: #fff; transition: all .12s; }
.scale label:hover span { border-color: #a1a1aa; }
.scale input:checked + span { background: var(--pri); border-color: var(--pri); color: #fff; }
.scale input:focus-visible + span { box-shadow: 0 0 0 4px var(--pri-ring); }
.scale-ends { display: flex; justify-content: space-between; gap: 12px; margin-top: 6px; font-size: 13px; color: var(--muted); }
.q.err .scale span { border-color: var(--bad); }
/* Đánh giá sao: HTML xếp ngược (max→1) + row-reverse để rê chuột tô sáng các sao bên trái */
.stars { display: inline-flex; flex-direction: row-reverse; gap: 2px; }
.stars input { position: absolute; opacity: 0; pointer-events: none; }
.stars label { cursor: pointer; color: var(--line-2); padding: 2px; border-radius: 8px; line-height: 0; transition: color .1s, transform .1s; }
.stars label svg { fill: currentColor; stroke: currentColor; }
.stars label:hover, .stars label:hover ~ label, .stars input:checked ~ label { color: #f59e0b; }
.stars label:active { transform: scale(.9); }
.stars input:focus-visible + label { box-shadow: 0 0 0 4px var(--pri-ring); }
/* Ô chọn màu chủ đề */
.swatches { display: flex; flex-wrap: wrap; gap: 10px; }
.swatch { width: 34px; height: 34px; border-radius: 50%; border: 0; background: var(--c); color: #fff; cursor: pointer;
  display: grid; place-items: center; box-shadow: 0 0 0 1px rgba(0,0,0,.08) inset; transition: transform .1s; }
.swatch:hover { transform: scale(1.08); }
.swatch.on { box-shadow: 0 0 0 3px #fff, 0 0 0 5px var(--c); }
/* Tiêu đề phần trong màn soạn */
.q-row.is-section { background: var(--pri-soft); border-color: #c7d2fe; }
.q-row.is-section .q-no { color: var(--pri); }
.q-row.is-section .q-top > input { font-weight: 600; }
/* Tab "Người nộp | Tóm tắt" */
.tabs.inline { display: inline-grid; grid-auto-flow: column; grid-template-columns: none; }
.tabs.inline a { display: inline-flex; align-items: center; gap: 7px; padding: 8px 14px; border-radius: 9px; font-weight: 600;
  font-size: 14.5px; color: var(--muted); text-decoration: none !important; }
.tabs.inline a.on { background: #fff; color: var(--text); box-shadow: var(--shadow); }
/* Tóm tắt câu trả lời */
.sum-section { margin: 26px 2px 12px; font-size: 15px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.sum-q { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 14px; }
.sum-q h2 { margin: 0 0 2px; }
.sum-q .q-no { width: 26px; height: 26px; border-radius: 50%; background: var(--hover); color: var(--muted); font-weight: 600;
  font-size: 13px; display: grid; place-items: center; flex: none; margin-top: 1px; }
.bars { display: grid; gap: 10px; }
.bar-row { display: grid; grid-template-columns: minmax(90px, 32%) 1fr 76px; gap: 12px; align-items: center; font-size: 14px; }
.bar-label { color: var(--text-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-track { height: 10px; background: var(--hover); border-radius: 4px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--pri); border-radius: 0 4px 4px 0; min-width: 2px; }
.bar-val { display: flex; gap: 8px; justify-content: flex-end; color: var(--text); }
.bar-val span { color: var(--muted); min-width: 34px; text-align: right; }
.bar-row:hover .bar-label { color: var(--text); } .bar-row:hover .bar-fill { background: var(--pri-hover); }
@media (max-width: 520px) {
  .bar-row { grid-template-columns: 1fr 70px; row-gap: 4px; }
  .bar-label { grid-column: 1 / -1; white-space: normal; }
}
.sum-avg { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.sum-avg .num { font-size: 30px; font-weight: 700; letter-spacing: -.02em; }
.avg-stars { position: relative; font-size: 20px; letter-spacing: 2px; color: var(--line-2); }
.avg-stars { background: linear-gradient(90deg, #f59e0b var(--p), var(--line-2) var(--p)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.sum-list { list-style: none; margin: 0; padding: 0; }
.sum-list li { padding: 9px 12px; background: #fafafa; border: 1px solid var(--line); border-radius: 8px; margin-bottom: 6px;
  font-size: 14.5px; white-space: pre-line; word-break: break-word; }
@media (max-width: 520px) { .tiles[style*="repeat(4"] { grid-template-columns: repeat(2, 1fr) !important; } }
/* Thang dài (vd 0–10) trên điện thoại: 2 hàng để mỗi ô đủ to cho ngón tay (≥ 44px) */
@media (max-width: 520px) { .scale.long { grid-template-columns: repeat(6, minmax(0, 1fr)); } }

/* ---------- Đợt 2: rẽ nhánh, nhiều trang, lời cảm ơn ---------- */
.q.q-hidden { display: none; }
.q-hidden + .q { border-top: 0; padding-top: 4px; margin-top: 0; }
.pprog { display: flex; align-items: center; gap: 12px; margin-top: 22px; }
.pprog .progress { flex: 1; margin: 0; }
.pprog .progress > div { background: var(--pri); }
.pbtns { display: flex; gap: 10px; margin-top: 16px; }
.pbtns .btn { min-height: 52px; font-size: 16px; padding: 0 18px; }
.pbtns .btn.pri { flex: 1 1 auto; }
.thanks { margin: 14px auto 0; max-width: 460px; padding: 14px 16px; background: var(--pri-soft); border-radius: var(--r);
  color: var(--text); white-space: pre-line; text-align: left; }
/* Màn soạn: điều kiện hiện câu */
.cond { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 10px; padding: 10px 12px; margin-left: 32px;
  background: var(--warn-soft); border: 1px solid var(--warn-line); border-radius: var(--r-sm); font-size: 14px; color: #78350f; }
.cond select { width: auto; min-height: 36px; padding: 5px 34px 5px 10px; font-size: 14px; max-width: 220px; }
.cond .bad { color: var(--bad); font-weight: 600; }

/* ---------- Câu lưới (hàng × cột) ---------- */
/* Soạn: Hàng | Cột cạnh nhau, điện thoại xếp chồng */
.grid-ed { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.grid-ed-h { font-size: 13.5px; font-weight: 600; color: var(--text-2); margin: 2px 0 6px; }
@media (max-width: 640px) { .grid-ed { grid-template-columns: 1fr; gap: 10px; } }

/* Điền: máy tính dạng bảng */
.grid-q { --lab: minmax(110px, 1.4fr); }
.grid-q .g-head, .grid-q .g-row { display: grid; grid-template-columns: var(--lab) repeat(var(--n), minmax(0, 1fr)); align-items: center; }
.grid-q .g-head { padding: 0 0 8px; font-size: 13px; color: var(--muted); text-align: center; }
.grid-q .g-head span { padding: 0 4px; overflow-wrap: anywhere; }
.grid-q .g-row { border-top: 1px solid var(--line); min-height: 48px; }
.grid-q .g-row:nth-child(even) { background: #fafafa; }
.grid-q .g-label { padding: 10px 8px 10px 4px; font-size: 14.5px; color: var(--text-2); }
.grid-q .g-cell { display: grid; place-items: center; align-self: stretch; cursor: pointer; }
.grid-q .g-cell:hover { background: var(--hover); }
.grid-q .g-cap { display: none; }
.grid-q input { appearance: none; width: 20px; height: 20px; margin: 0; border: 1.5px solid var(--line-2); border-radius: 50%;
  background: #fff; cursor: pointer; display: grid; place-items: center; transition: border-color .12s; }
.grid-q input[type=checkbox] { border-radius: 6px; }
.grid-q input:checked { border-color: var(--pri); background: var(--pri); }
.grid-q input[type=radio]:checked { background: #fff; border-width: 6px; }
.grid-q input[type=checkbox]:checked::after { content: ""; width: 5px; height: 10px; border: solid #fff; border-width: 0 2px 2px 0;
  transform: rotate(45deg) translate(-1px, -1px); }
.grid-q input:focus-visible { box-shadow: 0 0 0 4px var(--pri-ring); outline: none; }

/* Điền: điện thoại — mỗi hàng 1 khối, cột thành nút bấm có chữ (không phải kéo ngang) */
@media (max-width: 560px) {
  .grid-q .g-head { display: none; }
  .grid-q .g-row { display: flex; flex-wrap: wrap; gap: 6px; padding: 10px 0 12px; background: none !important; }
  .grid-q .g-label { flex: 1 1 100%; padding: 0 0 2px; font-weight: 500; color: var(--text); }
  .grid-q .g-cell { display: block; position: relative; }
  .grid-q .g-cell:hover { background: none; }
  .grid-q .g-cell input { position: absolute; opacity: 0; pointer-events: none; }
  .grid-q .g-cap { display: block; padding: 8px 14px; border: 1px solid var(--line-2); border-radius: 99px; font-size: 14px; background: #fff; }
  .grid-q .g-cell input:checked + .g-cap { border-color: var(--pri); background: var(--pri-soft); color: var(--pri); font-weight: 600; }
  .grid-q .g-cell input:focus-visible + .g-cap { box-shadow: 0 0 0 4px var(--pri-ring); }
}

/* Tóm tắt: bảng đếm hàng × cột, ô đậm nhạt theo tỉ lệ */
.sum-grid-wrap { overflow-x: auto; }
.sum-grid { border-collapse: collapse; width: 100%; font-size: 14px; }
.sum-grid th, .sum-grid td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: center; }
.sum-grid th { font-weight: 500; color: var(--muted); font-size: 13px; }
.sum-grid td:first-child, .sum-grid th:first-child { text-align: left; color: var(--text-2); min-width: 120px; }
.sum-grid td.c { background: rgba(79, 70, 229, var(--a)); }
.sum-grid td.c b { display: block; } .sum-grid td.c span { color: var(--muted); font-size: 12px; }
@media (max-width: 560px) {
  .sum-grid th, .sum-grid td { padding: 7px 4px; }
  .sum-grid td:first-child, .sum-grid th:first-child { min-width: 84px; font-size: 13px; }
}

/* ---------- Thu tiền: khung chuyển khoản (người điền) ---------- */
.card.pay h2 { display: flex; align-items: center; gap: 8px; }
.card.pay .qr-wrap { margin-top: 10px; }
.pay-rows { margin-top: 14px; border-top: 1px solid var(--line); }
.pay-row { display: grid; grid-template-columns: 110px minmax(0, 1fr) 34px; gap: 8px; align-items: center; padding: 6px 0;
  border-bottom: 1px solid var(--line); font-size: 14px; }
.pay-row b { font-weight: 600; overflow-wrap: anywhere; }

/* ---------- Thu tiền: phía người tạo phiếu ---------- */
.pay-acct { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--r-sm); background: var(--bg); }
.pay-acct > svg { flex: none; color: var(--muted); }
.pay-acct .grow { min-width: 0; overflow-wrap: anywhere; }
.pay-pill { display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; border-radius: 99px; border: 1px solid var(--line-2);
  background: var(--surface); color: var(--muted); font: inherit; font-size: 12.5px; font-weight: 500; white-space: nowrap; cursor: pointer; }
.pay-pill:hover { border-color: var(--pri); color: var(--pri); }
.pay-pill.on { border-color: var(--ok-line); background: var(--ok-soft); color: var(--ok); }
.pay-pill:disabled { opacity: .5; cursor: default; }
.pay-fields { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 12px; }
@media (max-width: 520px) {
  .pay-fields { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .pay-acct { flex-wrap: wrap; } .pay-acct .grow { flex: 1 1 160px; } .pay-acct .btn { margin-left: 30px; }
}

/* ---------- Đăng nhập bằng Google ---------- */
.google-btn { background: var(--surface); border: 1px solid var(--line-2); color: var(--text); gap: 10px; margin-top: 4px; }
.google-btn:hover { background: var(--hover); }
.google-btn svg { flex: none; }
.or-line { display: flex; align-items: center; gap: 12px; margin: 18px 0 4px; color: var(--faint); font-size: 13px; }
.or-line::before, .or-line::after { content: ""; flex: 1; height: 1px; background: var(--line); }

/* ---------- Ảnh gửi Zalo (xem trước trong khung) ---------- */
.zalo-preview { max-height: 52vh; overflow: auto; border: 1px solid var(--line); border-radius: var(--r-sm); background: var(--bg); }
.zalo-preview img { display: block; width: 100%; height: auto; }

/* ---------- Trang văn bản: Điều khoản, Quyền riêng tư ---------- */
main.doc { max-width: 760px; padding: 28px 16px 64px; line-height: 1.65; }
main.doc h1 { font-size: 28px; margin: 18px 0 4px; text-wrap: balance; }
main.doc h2 { font-size: 18px; margin: 32px 0 10px; }
main.doc p, main.doc li { color: var(--text-2); }
main.doc ol, main.doc ul { padding-left: 22px; } main.doc li { margin: 6px 0; }
main.doc .lead { font-size: 16px; color: var(--text); }
.doc-logo { display: inline-block; font-weight: 600; color: var(--pri); text-decoration: none; font-size: 14px; }
.tbl { overflow-x: auto; margin: 10px 0; border: 1px solid var(--line); border-radius: var(--r-sm); background: var(--surface); }
.tbl table { border-collapse: collapse; width: 100%; font-size: 14px; line-height: 1.5; }
.tbl th, .tbl td { text-align: left; vertical-align: top; padding: 9px 12px; border-bottom: 1px solid var(--line); }
.tbl tr:last-child td { border-bottom: 0; }
.tbl th { background: var(--bg); font-weight: 600; color: var(--text); }
@media (max-width: 560px) { .tbl table { min-width: 520px; } }

/* ---------- Khung Tài khoản ---------- */
.nav-acct { display: flex; align-items: center; gap: 8px; background: none; border: 0; padding: 4px 6px; border-radius: 99px; font: inherit; cursor: pointer; }
.nav-acct:hover { background: var(--hover); }
.nav-acct:focus-visible { outline: 3px solid var(--pri-ring); }
.acct-row { display: flex; gap: 12px; align-items: center; padding: 12px 0 14px; border-bottom: 1px solid var(--line); margin-bottom: 12px; }
.acct-row .grow { min-width: 0; overflow-wrap: anywhere; }