/* ทะเบียนรับหนังสือ สกบ. : สมุดทะเบียน + ตรายางรับหนังสือสีแดง */
:root {
  --paper: #eef1f4;
  --sheet: #ffffff;
  --ink: #18223a;
  --muted: #5a6478;
  --rule: #d3d9e1;
  --rule-soft: #e7ebf0;
  --stamp: #b3261e;
  --stamp-bg: #fdf5f4;
  --link: #1d4f91;
  --ok-bg: #e8f3ec; --ok-ink: #1e5b35;
  --err-bg: #fbeceb; --err-ink: #8e1f19;
  --focus: #2f6fd1;
  --radius: 6px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #11151c; --sheet: #191f29; --ink: #e5e9f0; --muted: #9aa4b5;
    --rule: #2e3746; --rule-soft: #242c38; --stamp: #f07a70; --stamp-bg: #241b1d;
    --link: #8db6f2; --ok-bg: #16291f; --ok-ink: #9fd8b2; --err-bg: #2e1a1a; --err-ink: #f4aaa4;
    --focus: #8db6f2;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 17px/1.65 "Sarabun", "Tahoma", system-ui, sans-serif;
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
a { color: var(--link); text-underline-offset: 3px; }
h1, h2 { line-height: 1.3; margin: 0; }
h1 { font-size: 1.6rem; font-weight: 700; }
h2 { font-size: 1.15rem; font-weight: 600; margin-bottom: .75rem; }
small, .hint, .muted { color: var(--muted); }
.hint { font-size: .85rem; margin: .25rem 0 0; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.nowrap { white-space: nowrap; }
.right { text-align: right; }

/* ---- header */
.top {
  position: sticky; top: 0; z-index: 10;
  display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1.5rem;
  padding: calc(.6rem + env(safe-area-inset-top, 0px)) 1.25rem .6rem;
  background: var(--sheet); border-bottom: 1px solid var(--rule);
}
.brand { display: flex; align-items: center; gap: .6rem; color: var(--ink); text-decoration: none; font-weight: 700; }
.brand-mark {
  color: var(--stamp); border: 2px solid var(--stamp); border-radius: 4px;
  padding: 0 .4rem; font-size: .9rem; line-height: 1.6;
}
.top nav { display: flex; flex-wrap: wrap; align-items: center; gap: .25rem 1rem; margin-left: auto; }
.top nav a { color: var(--ink); text-decoration: none; padding: .2rem 0; border-bottom: 2px solid transparent; }
.top nav a[aria-current="page"] { border-bottom-color: var(--stamp); }
.top nav a:hover { color: var(--link); }
.top nav .who { color: var(--muted); }
.badge { background: var(--stamp); color: #fff; border-radius: 99px; padding: 0 .45rem; font-size: .8rem; font-weight: 600; }

/* ---- layout */
.wrap { max-width: 1280px; margin: 0 auto; padding: 1.5rem 1.25rem 3rem; }
.page-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: .5rem 1rem; margin-bottom: 1rem; }
.sheet { background: var(--sheet); border: 1px solid var(--rule); border-radius: var(--radius); padding: 1.25rem; margin-bottom: 1.25rem; }
.sheet.flush { padding: 0; }
.sheet.narrow { max-width: 560px; }
.empty { text-align: center; padding: 2.5rem 1.25rem; }
.err-code { font-size: 3rem; font-weight: 700; color: var(--stamp); margin: 0; }

/* ---- controls */
input, select, textarea, button { font: inherit; color: inherit; }
input, select, textarea {
  width: 100%; padding: .5rem .65rem; background: var(--sheet);
  border: 1px solid var(--rule); border-radius: var(--radius); min-height: 2.6rem;
}
input:focus, select:focus, textarea:focus { border-color: var(--focus); }
input.ro, input[readonly] { background: var(--paper); color: var(--muted); }
textarea { resize: vertical; }
label, .label { display: block; font-weight: 600; font-size: .95rem; }
label > input, label > select { margin-top: .3rem; font-weight: 400; }
label small { font-weight: 400; }
button, .btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  min-height: 2.6rem; padding: .4rem 1.1rem; border-radius: var(--radius);
  border: 1px solid var(--rule); background: var(--sheet); cursor: pointer;
  font-weight: 600; text-decoration: none; color: var(--ink);
}
button:hover, .btn:hover { border-color: var(--muted); }
button:disabled { opacity: .55; cursor: not-allowed; }
.primary { background: var(--ink); border-color: var(--ink); color: var(--sheet); }
.primary:hover { background: var(--link); border-color: var(--link); }
.danger { color: var(--stamp); border-color: var(--stamp); }
.ghost { border-style: dashed; }
.small { min-height: 2rem; padding: .15rem .7rem; font-size: .9rem; }
.wide { width: 100%; }
.linklike { border: 0; background: none; padding: 0; min-height: 0; color: var(--muted); font-weight: 400; }
.linklike:hover { color: var(--stamp); }
form.inline { display: inline; }
.stack { display: grid; gap: .9rem; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1rem; }
fieldset { border: 1px solid var(--rule); border-radius: var(--radius); padding: .75rem 1rem 1rem; display: grid; gap: .75rem; margin: 0; }
legend { font-weight: 600; padding: 0 .3rem; }

/* ---- messages */
.flashes { display: grid; gap: .5rem; margin-bottom: 1rem; }
.flash { margin: 0; padding: .6rem .9rem; border-radius: var(--radius); background: var(--ok-bg); color: var(--ok-ink); }
.flash.error { background: var(--err-bg); color: var(--err-ink); }
.errors { background: var(--err-bg); color: var(--err-ink); border-left: 4px solid var(--stamp); padding: .75rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; }
.errors p { margin: 0; font-weight: 600; }
.errors ul { margin: .3rem 0 0; padding-left: 1.2rem; }

/* ---- login / register */
.auth-wrap { min-height: 100vh; display: grid; place-content: center; padding: 2rem 1rem; gap: 0; }
.auth-wrap .flashes { width: min(420px, 92vw); }
.auth-card { width: min(420px, 92vw); background: var(--sheet); border: 1px solid var(--rule); border-radius: var(--radius); padding: 2rem 1.75rem 1.5rem; }
.auth-card h1 { margin-bottom: 1.25rem; }
.auth-logo { display: block; width: min(240px, 70%); height: auto; margin: 0 auto 1.25rem; border-radius: 4px; }
@media (prefers-color-scheme: dark) { .auth-logo { background: #fff; padding: .4rem .6rem; } }
.auth-system { margin: 0 0 .2rem; color: var(--muted); font-weight: 500; }
.note { margin: -.75rem 0 1.25rem; color: var(--muted); }
.seal {
  float: right; display: grid; place-items: center; width: 4.5rem; height: 4.5rem;
  border: 3px double var(--stamp); border-radius: 50%; color: var(--stamp);
  font-weight: 700; line-height: 1.15; transform: rotate(-8deg); margin: -.5rem -.25rem 0 .5rem;
}
.seal span:last-child { font-size: 1.35rem; }
.auth-links { display: grid; gap: .4rem; margin-top: 1.25rem; padding-top: 1rem; border-top: 1px solid var(--rule-soft); }

/* ---- search + ledger */
.search { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: .75rem 1rem; align-items: end; }
.search .q { grid-column: 1 / -1; font-size: 1.05rem; }
.search-actions { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1.25rem; }
.count { color: var(--muted); margin: 0 0 .5rem; }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table.grid { width: 100%; border-collapse: collapse; font-size: .95rem; }
.grid th, .grid td { padding: .55rem .75rem; border-bottom: 1px solid var(--rule-soft); vertical-align: top; text-align: left; }
.grid th { font-weight: 600; color: var(--muted); border-bottom: 2px solid var(--rule); background: var(--sheet); white-space: nowrap; }
.grid th.right, .grid td.right { text-align: right; }
.grid tbody tr:hover { background: var(--paper); }
.ledger td.reg { font-variant-numeric: tabular-nums; font-weight: 700; font-size: 1.05rem; border-right: 2px solid var(--stamp); }
.ledger td.reg a { color: var(--stamp); text-decoration: none; }
.ledger td.reg small { font-weight: 400; }
.ledger .subject { min-width: 18rem; }
.ledger .subject a { color: var(--ink); text-decoration: none; }
.ledger .subject a:hover { color: var(--link); text-decoration: underline; }
.remark { display: block; margin-top: .15rem; }
.filechip {
  display: inline-grid; place-items: center; width: 1.7rem; height: 1.7rem; margin-right: .25rem;
  border: 1px solid var(--rule); border-radius: 4px; text-decoration: none; font-size: .85rem; font-weight: 600;
}
.filechip:hover { border-color: var(--link); }
.pager { display: flex; justify-content: center; gap: 1.5rem; margin-top: 1rem; }
.tag { font-size: .75rem; border: 1px solid var(--stamp); color: var(--stamp); border-radius: 4px; padding: 0 .35rem; margin-left: .25rem; }
tr.is-off td { color: var(--muted); }
.grid td.right form + form { margin-left: .25rem; }

/* ---- receiving form */
.docform { display: grid; grid-template-columns: 290px 1fr; gap: 1.25rem; align-items: start; }
.stamp {
  position: sticky; top: 5rem;
  border: 4px double var(--stamp); border-radius: var(--radius); background: var(--stamp-bg);
  color: var(--stamp); padding: 1rem 1.1rem 1.1rem; display: grid; gap: .9rem;
}
.stamp-head { margin: 0; font-weight: 700; font-size: 1.1rem; text-align: center; padding-bottom: .5rem; border-bottom: 1px solid currentColor; }
.stamp label { color: var(--stamp); }
.stamp input { border-color: color-mix(in srgb, var(--stamp) 45%, transparent); }
.stamp .hint { color: color-mix(in srgb, var(--stamp) 75%, var(--muted)); }
.stamp-no { display: flex; align-items: baseline; gap: .4rem; margin-top: .3rem; }
.stamp-no input {
  font-size: 2.3rem; font-weight: 700; line-height: 1.1; color: var(--stamp); text-align: right;
  font-variant-numeric: tabular-nums; padding: .2rem .5rem; flex: 1; min-width: 0;
}
.stamp-year { font-size: 1.2rem; font-weight: 600; white-space: nowrap; }
.field { display: block; }
.field > label, .field > .label { margin-bottom: .3rem; }
.fields { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem 1.25rem; margin: 0; }
.span2 { grid-column: 1 / -1; }
.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .45rem; }
.chip { min-height: 2rem; padding: .1rem .75rem; border-radius: 99px; font-weight: 500; }
.chip:hover { border-color: var(--stamp); color: var(--stamp); }
.suggest-wrap { position: relative; }
.suggest {
  position: absolute; left: 0; right: 0; z-index: 5; margin: .2rem 0 0; padding: .25rem 0; list-style: none;
  background: var(--sheet); border: 1px solid var(--rule); border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(16, 24, 40, .14); max-height: 18rem; overflow-y: auto;
}
.suggest li { padding: .45rem .75rem; cursor: pointer; }
.suggest li:hover, .suggest li[aria-selected="true"] { background: var(--paper); color: var(--link); }
.file-add { display: flex; flex-wrap: wrap; gap: .5rem; }
.filelist { list-style: none; margin: 0 0 .6rem; padding: 0; display: grid; gap: .4rem; }
.file { display: flex; flex-wrap: wrap; align-items: center; gap: .3rem .75rem; padding: .45rem .7rem; border: 1px solid var(--rule); border-radius: var(--radius); }
.file > a, .file > span { flex: 1 1 12rem; overflow-wrap: anywhere; }
.file.new { border-style: dashed; }
.file.removed > a { text-decoration: line-through; color: var(--muted); }
.file.removed { background: var(--err-bg); }
.danger-zone { margin: 2rem 0 0; text-align: right; }

@media (max-width: 860px) {
  .docform { grid-template-columns: 1fr; }
  .stamp { position: static; }
  .fields { grid-template-columns: 1fr; }
  .top nav { margin-left: 0; }
  .wrap { padding: 1rem .75rem 2.5rem; }
  .sheet { padding: 1rem; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }

/* ---- ช่องวันที่ วว/ดด/ปปปป */
.datebox { position: relative; display: flex; gap: .4rem; }
label > .datebox { margin-top: .3rem; font-weight: 400; }
.datebox input { flex: 1; min-width: 0; font-variant-numeric: tabular-nums; }
.date-btn { min-width: 2.6rem; padding: 0 .6rem; flex: none; }
.stamp .date-btn { color: var(--stamp); border-color: color-mix(in srgb, var(--stamp) 45%, transparent); }
.datepop {
  position: absolute; top: calc(100% + .3rem); left: 0; z-index: 20; width: min(19rem, 88vw);
  background: var(--sheet); color: var(--ink); border: 1px solid var(--rule); border-radius: var(--radius);
  box-shadow: 0 10px 28px rgba(16, 24, 40, .18); padding: .6rem; font-weight: 400;
}
.dp-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: .35rem; }
.dp-head button { min-height: 2.2rem; padding: 0 .8rem; font-size: 1.1rem; }
.dp-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; text-align: center; }
.dp-dow { font-size: .8rem; color: var(--muted); padding: .2rem 0; }
.dp-day { min-height: 2.3rem; padding: 0; border: 0; border-radius: 4px; font-weight: 400; background: none; }
.dp-day:hover { background: var(--paper); }
.dp-day.is-today { box-shadow: inset 0 0 0 1px var(--stamp); color: var(--stamp); }
.dp-day.is-sel { background: var(--ink); color: var(--sheet); box-shadow: none; }
.dp-foot { display: flex; justify-content: space-between; margin-top: .4rem; }
.dp-foot button { min-height: 2rem; font-size: .9rem; padding: .1rem .8rem; }

/* ---- หน้าหลัก + ระบบออกเลขส่ง */
.eyebrow { margin: 0; color: var(--muted); font-size: .9rem; font-weight: 500; }
.systems { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 1.25rem; }
.system { display: grid; gap: 1rem; align-content: start; margin: 0; }
.system-head { display: flex; gap: 1rem; align-items: center; }
.system-head h2 { margin: 0; }
.system-head p { margin: .1rem 0 0; }
.system-mark {
  flex: none; display: grid; place-items: center; width: 3.4rem; height: 3.4rem; border-radius: 50%;
  border: 3px double var(--stamp); color: var(--stamp); font-weight: 700; font-size: 1.2rem; transform: rotate(-8deg);
}
.system-mark.out { border-color: var(--link); color: var(--link); }
.recent { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule-soft); }
.recent li { padding: .5rem 0; border-bottom: 1px solid var(--rule-soft); display: grid; }
.recent a { color: var(--ink); text-decoration: none; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.recent a:hover { color: var(--link); }
.recent b { font-variant-numeric: tabular-nums; margin-right: .35rem; }
.recent small { font-size: .85rem; }
.stamp-out { --stamp: var(--link); --stamp-bg: color-mix(in srgb, var(--link) 6%, var(--sheet)); }
.ledger-out td.reg { border-right-color: var(--link); }
.ledger-out td.reg a { color: var(--link); }

.datetime-row { display: flex; align-items: center; gap: .5rem; }
.datetime-row .datebox { flex: 1; }
.time-input { width: 5.5rem; flex: none; text-align: center; font-variant-numeric: tabular-nums; }
.datetime-row .unit { color: var(--muted); }