/* DeliTMS Help v1 — style chung cho tài liệu hướng dẫn tương tác */
:root {
  --ink: #1f2937;
  --muted: #6b7280;
  --brand: #ff6868;
  --brand-dark: #d84545;
  --bg: #f6f8fb;
  --card: #ffffff;
  --line: #e5e7eb;
  --ok: #157347;
  --ok-bg: #e8f5ee;
  --warn: #b45309;
  --warn-bg: #fef7e6;
  --danger: #b02a37;
  --danger-bg: #fdecee;
  --mono: "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font: 16px/1.65 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}
.wrap { max-width: 1320px; margin: 0 auto; padding: 24px 20px 80px; }

/* ── Header / breadcrumb ── */
.site-head {
  background: linear-gradient(120deg, #c73e3e, #ff6868);
  color: #fff;
  padding: 26px 20px 22px;
}
.site-head .wrap { padding: 0; max-width: 1320px; margin: 0 auto; }
.site-head .crumb { font-size: 13px; opacity: .85; margin-bottom: 6px; }
.site-head .crumb a { color: #fff; text-decoration: none; border-bottom: 1px dotted rgba(255,255,255,.6); }
.site-head h1 { margin: 0; font-size: 26px; line-height: 1.3; }
.site-head .lead { margin: 8px 0 0; font-size: 15px; opacity: .92; max-width: 720px; }

h2 { font-size: 21px; margin: 40px 0 12px; padding-top: 8px; border-top: 3px solid var(--brand); }
h2:first-of-type { margin-top: 26px; }
h3 { font-size: 17px; margin: 26px 0 8px; }
p, ul, ol { margin: 10px 0; }
li { margin: 4px 0; }
a { color: var(--brand-dark); }
code { font-family: var(--mono); font-size: .88em; background: #eef1f6; padding: 1px 5px; border-radius: 4px; }

table { border-collapse: collapse; width: 100%; margin: 12px 0; background: var(--card); font-size: 15px; }
th, td { border: 1px solid var(--line); padding: 7px 10px; text-align: left; vertical-align: top; }
th { background: #fdeeee; font-weight: 600; }
.table-scroll { overflow-x: auto; }

.note, .tip, .warn {
  border-left: 4px solid var(--brand);
  background: #fdf1f1;
  padding: 10px 14px;
  border-radius: 0 8px 8px 0;
  margin: 14px 0;
}
.tip { border-color: var(--ok); background: var(--ok-bg); }
.warn { border-color: var(--warn); background: var(--warn-bg); }

/* ── Playground ── */
.playground {
  background: var(--card);
  border: 1px solid #f6cccc;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(255,104,104,.08);
  margin: 20px 0 28px;
  overflow: hidden;
}
.playground > .pg-head {
  background: #fdf1f1;
  padding: 10px 16px;
  font-weight: 700;
  border-bottom: 1px solid #f6cccc;
  display: flex; align-items: center; gap: 8px;
}
.pg-head .badge {
  font-size: 11px; font-weight: 700; letter-spacing: .4px;
  background: var(--brand); color: #fff; border-radius: 20px; padding: 2px 10px;
}
.pg-body { padding: 14px 16px 18px; }
.pg-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 720px) { .pg-cols { grid-template-columns: 1fr; } }
.pg-panel h4 {
  margin: 0 0 8px; font-size: 13px; text-transform: uppercase; letter-spacing: .5px;
  color: var(--muted);
}
.pg-field { display: flex; align-items: center; gap: 8px; margin: 7px 0; flex-wrap: wrap; }
.pg-field label { min-width: 150px; font-size: 14px; color: #374151; }
.pg-field input[type=number], .pg-field input[type=text], .pg-field select {
  padding: 6px 8px; border: 1px solid #c7cdd6; border-radius: 6px; font-size: 14px;
  width: 130px; background: #fff;
}
.pg-field select { width: auto; max-width: 260px; }
.pg-field .unit { font-size: 13px; color: var(--muted); }
.pg-field input:focus, .pg-field select:focus { outline: 2px solid #ffb8b8; border-color: var(--brand); }

/* bảng bậc thang editable */
.tier-table input[type=number], .tier-table select { width: 100%; min-width: 70px; padding: 4px 6px; border: 1px solid #c7cdd6; border-radius: 5px; font-size: 13.5px; }
.tier-table td { padding: 5px 6px; }
.tier-table th { font-size: 13px; }
.tier-table .tier-del { border: 0; background: none; color: var(--danger); font-size: 16px; cursor: pointer; padding: 0 4px; }
.btn-mini {
  border: 1px solid var(--brand); background: #fff; color: var(--brand-dark);
  border-radius: 6px; padding: 4px 12px; font-size: 13px; cursor: pointer; margin-top: 6px;
}
.btn-mini:hover { background: #fdf1f1; }
.preset-row { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 2px; }
.preset-row button {
  border: 1px solid #c7cdd6; background: #f3f5f9; border-radius: 20px;
  padding: 3px 12px; font-size: 13px; cursor: pointer;
}
.preset-row button:hover { border-color: var(--brand); color: var(--brand-dark); background: #fdf1f1; }

/* kết quả */
.pg-result {
  margin-top: 14px; border-top: 2px dashed #f6cccc; padding-top: 12px;
}
.pg-result .total {
  font-size: 22px; font-weight: 800; color: var(--brand-dark);
}
.pg-result .total.err { color: var(--danger); font-size: 16px; }
.calc-steps { margin: 8px 0 0; padding: 0; list-style: none; font-size: 14.5px; }
.calc-steps li {
  padding: 5px 10px; border-left: 3px solid #f3d5d5; margin: 4px 0; background: #fdfafa;
  border-radius: 0 6px 6px 0;
}
.calc-steps li.hit { border-color: var(--ok); background: var(--ok-bg); }
.calc-steps li.clamp { border-color: var(--warn); background: var(--warn-bg); }
.calc-steps .f { font-family: var(--mono); font-size: 13px; color: #374151; }

/* bảng chọn scope (mini-sim ưu tiên) */
.scope-pick tr.win { background: var(--ok-bg); }
.scope-pick tr.win td:first-child::before { content: "✓ "; color: var(--ok); font-weight: 700; }
.scope-pick tr.skip { color: #9aa2af; }

/* ── nav chân trang / mục lục ── */
.toc-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; margin: 18px 0; }
.toc-card {
  display: block; background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 14px 16px; text-decoration: none; color: var(--ink);
  transition: box-shadow .15s, border-color .15s;
}
.toc-card:hover { border-color: var(--brand); box-shadow: 0 3px 12px rgba(255,104,104,.15); }
.toc-card .t { font-weight: 700; color: var(--brand-dark); margin-bottom: 4px; }
.toc-card .d { font-size: 13.5px; color: var(--muted); }
.pager { display: flex; justify-content: space-between; gap: 10px; margin-top: 42px; font-size: 14.5px; }
.pager a { text-decoration: none; border: 1px solid var(--line); background: var(--card); padding: 9px 14px; border-radius: 8px; }
.pager a:hover { border-color: var(--brand); }
footer.help-foot { margin-top: 44px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); padding-top: 14px; }

/* ── ảnh chụp màn hình portal ── */
figure.screenshot {
  margin: 16px 0 22px;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: var(--card);
  box-shadow: 0 2px 10px rgba(31,41,55,.07);
}
figure.screenshot img { display: block; width: 100%; height: auto; }
figure.screenshot figcaption {
  padding: 8px 14px;
  font-size: 13.5px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: #fafbfd;
}
figure.screenshot.collapsible img { max-height: 420px; object-fit: cover; object-position: top; cursor: zoom-in; transition: max-height .25s; }
figure.screenshot.collapsible.open img { max-height: none; cursor: zoom-out; }
figure.screenshot.collapsible figcaption::after { content: " · Chọn ảnh để xem đầy đủ"; color: var(--brand-dark); }
figure.screenshot.collapsible.open figcaption::after { content: " · Chọn để thu gọn"; }

/* section chương trên trang manual chung */
.chapter-list { list-style: none; margin: 14px 0; padding: 0; }
.chapter-list li {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  margin: 8px 0; padding: 12px 16px; display: flex; gap: 12px; align-items: baseline;
}
.chapter-list .num { font-weight: 800; color: var(--brand-dark); min-width: 30px; }
.chapter-list .soon { font-size: 12px; color: var(--muted); border: 1px dashed #c7cdd6; border-radius: 12px; padding: 1px 8px; margin-left: 6px; white-space: nowrap; }
.chapter-list a { font-weight: 600; }

@media print {
  .site-head { background: none; color: #000; }
  .playground { break-inside: avoid; }
}

/* ── tìm kiếm sổ tay ── */
.help-search { position: relative; margin-top: 14px; max-width: 520px; }
.help-search input {
  width: 100%; padding: 9px 14px; border-radius: 8px; border: 1px solid rgba(255,255,255,.45);
  background: rgba(255,255,255,.95); font-size: 14.5px; color: var(--ink);
}
.help-search input:focus { outline: 3px solid rgba(255,255,255,.35); }
.hs-results {
  position: absolute; z-index: 50; left: 0; right: 0; top: calc(100% + 6px);
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  box-shadow: 0 10px 30px rgba(31,41,55,.18); overflow: hidden; max-height: 420px; overflow-y: auto;
}
.hs-item { display: block; padding: 9px 14px; text-decoration: none; border-bottom: 1px solid #f1f3f6; }
.hs-item:last-child { border-bottom: 0; }
.hs-item:hover { background: #fdf1f1; }
.hs-h { display: block; font-weight: 600; color: var(--brand-dark); font-size: 14.5px; }
.hs-p { display: block; font-size: 12px; color: var(--muted); margin: 1px 0 2px; }
.hs-t { display: block; font-size: 13px; color: #4b5563; line-height: 1.45; }
.hs-empty { padding: 12px 14px; font-size: 13.5px; color: var(--muted); }