/* ────────────────────────────────────────────────────────────────
   ใบตารางเวร — กระดาษฟอร์มโทนน้ำเงินให้เข้ากับโลโก้
   น้ำเงิน = สิ่งที่กดได้  แดง = รอยเขียนด้วยมือ (วงวันนี้ / OT / Oncall)
   สีของช่องเวรยกมาจาก conditional format ในชีตจริง จึงไม่แตะ
   ──────────────────────────────────────────────────────────────── */

:root {
  --ledger:  #EAEEF5;   /* กระดาษ */
  --ledger-2:#DEE4EF;   /* แถบหัว/พื้นรอง */
  --ink:     #14213A;   /* หมึกพิมพ์ น้ำเงินเข้ม */
  --ink-60:  #55637F;
  --ink-40:  #8791A6;
  --rule:    #BFC9DB;   /* เส้นบรรทัด */
  --rule-2:  #D6DCE8;
  --pen:     #C2452D;   /* ปากกาแดงที่ใช้วงและทำเครื่องหมาย */
  --brand:   #1769CA;   /* น้ำเงินจากโลโก้ ใช้กับสิ่งที่โต้ตอบได้ */
  --on-fill: #16203A;   /* ตัวอักษรบนช่องสีในตาราง */

  --work:    #F5C84C;
  --off:     #EE8C78;
  --oncall:  #7CC79A;
  --leave:   #6ECBDB;
  --void:    #E4E7DD;

  --serif: 'Trirong', 'Noto Serif Thai', Georgia, serif;
  --sans: 'Sarabun', 'Noto Sans Thai', system-ui, -apple-system, sans-serif;

  --pad: 18px;
  --safe-b: env(safe-area-inset-bottom, 0px);
}

@media (prefers-color-scheme: dark) {
  :root {
    --ledger:  #101823;
    --ledger-2:#17202C;
    --ink:     #DEE5F0;
    --ink-60:  #97A2B5;
    --ink-40:  #6A7486;
    --rule:    #2A3648;
    --rule-2:  #1F2836;
    --pen:     #E2633F;
    --brand:   #5AA0F0;
    --void:    #141C27;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ledger);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}

button, input, select { font: inherit; color: inherit; }

/* ── หัวกระดาษ ─────────────────────────────────────────── */

.masthead {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 12px;
  padding: calc(env(safe-area-inset-top, 0px) + 16px) var(--pad) 9px;
  border-bottom: 3px double var(--rule);
  background: var(--ledger);
  position: sticky;
  top: 0;
  z-index: 5;
}

.masthead__name {
  margin: 0;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .01em;
  white-space: nowrap;
}

.masthead__who {
  margin: 0;
  font-size: 13px;
  color: var(--ink-60);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.masthead__btn {
  border: 0;
  background: none;
  padding: 2px 0;
  font-size: 13.5px;
  color: var(--ink-60);
  cursor: pointer;
  border-bottom: 1px solid var(--rule);
}
.masthead__btn:hover { color: var(--ink); border-bottom-color: currentColor; }

main { max-width: 560px; margin: 0 auto; padding: 0 var(--pad) calc(44px + var(--safe-b)); }

/* ── เริ่มต้นใช้งาน ─────────────────────────────────────── */

.empty { padding: 40px 0 0; }
.empty__lead { margin: 0 0 18px; font-size: 17px; color: var(--ink-60); max-width: 28ch; }

/* ── ช่องเวรของวันที่เลือก ───────────────────────────────── */

.focus { padding: 22px 0 24px; border-bottom: 1px solid var(--rule); }

.focus__date {
  margin: 0 0 16px;
  font-size: 15px;
  color: var(--ink-60);
  display: flex;
  align-items: baseline;
  gap: 9px;
  flex-wrap: wrap;
}
.focus__tag { color: var(--pen); font-size: 13px; }
.focus__tag:empty { display: none; }

.focus__row { display: flex; align-items: flex-start; gap: 20px; }

/* ช่องเวรวาดให้เหมือนเซลล์ในสเปรดชีต: สี่เหลี่ยม เส้นคม ไม่มีเงา */
.focus__cell {
  position: relative;
  flex: 0 0 auto;
  width: 108px;
  height: 88px;
  display: grid;
  place-items: center;
  border: 1px solid var(--ink);
  background: var(--tone, transparent);
}
.focus__code {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 33px;
  line-height: 1;
  color: var(--on-fill);
  padding: 0 6px;
  overflow-wrap: anywhere;
  text-align: center;
}
.focus__cell[data-kind="blank"] .focus__code { color: var(--ink-40); }

/* วงปากกา — เครื่องหมายเดียวของหน้านี้ที่ไม่ได้มาจากตาราง */
.pen { position: absolute; overflow: visible; pointer-events: none; }
.pen path { fill: none; stroke: var(--pen); stroke-linecap: round; stroke-linejoin: round; }

.focus__read { padding-top: 2px; min-width: 0; }
.focus__label { margin: 0; font-size: 19px; font-weight: 500; }
.focus__time { margin: 2px 0 0; font-size: 17px; color: var(--ink-60); }

.marks { list-style: none; margin: 11px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.marks li {
  font-size: 12.5px;
  padding: 1px 8px 2px;
  border: 1px solid var(--pen);
  color: var(--pen);
}

.focus__note { margin: 16px 0 0; font-size: 13.5px; color: var(--ink-40); }
.focus__note:empty { display: none; }

.focus__next {
  margin: 18px 0 0;
  padding-top: 12px;
  border-top: 1px dotted var(--rule);
  font-size: 15px;
  color: var(--ink-60);
}
.focus__next b { font-family: var(--serif); font-weight: 600; color: var(--ink); }

/* ── ปฏิทินเวร ─────────────────────────────────────────── */

.month { padding: 24px 0 4px; }
.month__name {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
}

.grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}

.dow {
  background: var(--ledger-2);
  text-align: center;
  font-size: 11.5px;
  color: var(--ink-60);
  padding: 5px 0;
}
.dow--sun, .dow--sat { color: var(--pen); }

.cell {
  position: relative;
  background: var(--ledger);
  border: 0;
  padding: 4px 3px 5px;
  min-height: 58px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  cursor: pointer;
  font: inherit;
  color: var(--ink);
}
.cell__num { font-size: 10.5px; line-height: 1; color: var(--ink-40); align-self: flex-start; }
.cell__code {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 13.5px;
  line-height: 1.1;
  margin-top: auto;
  color: var(--on-fill);
}

/* OT / Oncall เขียนเป็นตัวหนังสือในช่องเลย จะได้เห็นตอนกวาดตาดูทั้งเดือน */
.cell__mods {
  font-size: 9px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: .05em;
  margin-bottom: 1px;
  color: var(--on-fill);
  opacity: .68;
}

.cell[data-kind="work"]  { background: var(--work); }
.cell[data-kind="off"]   { background: var(--off); }
.cell[data-kind="leave"] { background: var(--leave); }
.cell[data-kind="unknown"] { background: var(--ledger-2); }
.cell[data-kind="work"] .cell__num,
.cell[data-kind="off"] .cell__num,
.cell[data-kind="leave"] .cell__num { color: #16203AA6; }

/* วันในเดือนที่ไม่มีในรอบเวร: ปล่อยว่างเฉยๆ ให้วันที่มีเวรเด่นแทน */
.cell--void { cursor: default; }
.cell--void .cell__num { color: var(--ink-40); }

/* ช่องนอกเดือน: ขีดทแยงเบาๆ ตามธรรมเนียมแบบฟอร์ม */
.cell--pad {
  background:
    repeating-linear-gradient(135deg, transparent 0 6px, var(--rule-2) 6px 7px),
    var(--ledger);
  cursor: default;
}
.cell--pad .cell__num { display: none; }

.cell--today { z-index: 1; }
.cell--sel { outline: 2px solid var(--ink); outline-offset: -2px; }
.cell:focus-visible { outline: 2px solid var(--brand); outline-offset: -2px; }

/* ── ท้ายกระดาษ ────────────────────────────────────────── */

.foot { padding: 26px 0 0; border-top: 1px solid var(--rule); margin-top: 26px; }
.foot__line { margin: 0; font-size: 14.5px; color: var(--ink-60); }
.foot__line b { color: var(--ink); font-weight: 600; }

.key { list-style: none; margin: 16px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 5px 14px; }
.key li { display: flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--ink-60); }
.key i { width: 11px; height: 11px; background: var(--tone); border: 1px solid #16203A2E; }

.notice {
  margin: 26px 0 0;
  padding: 11px 0 11px 13px;
  border-left: 2px solid var(--pen);
  font-size: 14px;
}

/* ── ปุ่ม ───────────────────────────────────────────────── */

.btn {
  display: block;
  width: 100%;
  padding: 11px 16px;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font-size: 15px;
}
.btn:hover:not(:disabled) { background: var(--ledger-2); }
.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn--ink { background: var(--ink); color: var(--ledger); font-weight: 500; }
.btn--ink:hover:not(:disabled) { background: var(--ink); opacity: .9; }
.btn--quiet { border-color: var(--rule); color: var(--ink-60); }

/* ── แผงตั้งค่า ─────────────────────────────────────────── */

.sheet { position: fixed; inset: 0; z-index: 20; }
.sheet__scrim { position: absolute; inset: 0; background: #08111F99; animation: fade .18s ease; }
.sheet__panel {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  background: var(--ledger);
  border-top: 3px double var(--rule);
  animation: rise .24s cubic-bezier(.2,.8,.3,1);
}
@media (min-width: 620px) {
  .sheet__panel { left: 50%; transform: translateX(-50%); width: 560px; bottom: 5vh; border: 1px solid var(--ink); }
}
@keyframes rise { from { transform: translateY(20px); opacity: 0 } to { transform: none; opacity: 1 } }
@keyframes fade { from { opacity: 0 } to { opacity: 1 } }

.sheet__head {
  display: flex; align-items: baseline; justify-content: space-between;
  padding: 15px var(--pad) 10px;
  border-bottom: 1px solid var(--rule);
  flex: none;
}
.sheet__title { margin: 0; font-family: var(--serif); font-size: 18px; font-weight: 600; }
.sheet__x { border: 0; background: none; padding: 0; font-size: 14px; color: var(--ink-60); cursor: pointer; border-bottom: 1px solid var(--rule); }

.sheet__body { overflow-y: auto; padding: 18px var(--pad) calc(22px + var(--safe-b)); display: grid; gap: 18px; }
.sheet__meta { margin: 0; font-size: 12px; color: var(--ink-40); }
.sheet__actions { margin-top: 2px; }

.field { display: grid; gap: 5px; }
.field__label { font-size: 13px; color: var(--ink-60); }
.field__input {
  width: 100%;
  padding: 8px 2px;
  border: 0;
  border-bottom: 1px solid var(--ink);
  background: transparent;
  border-radius: 0;
  outline: none;
  font-size: 16px;
}
.field__input:focus-visible { border-bottom-width: 2px; border-bottom-color: var(--brand); }
select.field__input {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-60) 50%), linear-gradient(135deg, var(--ink-60) 50%, transparent 50%);
  background-position: calc(100% - 11px) 19px, calc(100% - 6px) 19px;
  background-size: 5px 5px;
  background-repeat: no-repeat;
  padding-right: 26px;
}

.switchrow { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.switchrow__label { margin: 0; font-size: 15.5px; }
.switchrow__hint { margin: 2px 0 0; font-size: 12.5px; color: var(--ink-60); }

.switch { flex: none; cursor: pointer; }
.switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.switch__track { display: block; width: 46px; height: 26px; background: var(--rule); padding: 3px; transition: background .15s; }
.switch__knob { display: block; width: 20px; height: 20px; background: var(--ledger); transition: transform .15s; }
.switch input:checked + .switch__track { background: var(--brand); }
.switch input:checked + .switch__track .switch__knob { transform: translateX(20px); }
.switch input:focus-visible + .switch__track { outline: 2px solid var(--brand); outline-offset: 2px; }

.times { display: grid; gap: 9px; }
.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 7px; }
.chips:empty::after { content: 'ยังไม่ได้เลือกเวลา'; font-size: 13px; color: var(--ink-40); }
.chips button {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 4px 9px 5px; font-size: 14px;
  border: 1px solid var(--ink); background: transparent; cursor: pointer;
  font-variant-numeric: tabular-nums;
}
.chips button:hover { border-color: var(--brand); color: var(--brand); }
.chips button span { font-size: 15px; line-height: 1; opacity: .55; }
.timeadd { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: end; }
.timeadd .btn { width: auto; padding: 8px 16px; }
.timeadd input { padding-top: 6px; padding-bottom: 6px; }

.fold { border-top: 1px solid var(--rule); padding-top: 14px; }
.fold__head { cursor: pointer; font-size: 14.5px; }
.fold__hint { font-size: 12.5px; color: var(--ink-60); margin: 9px 0 12px; line-height: 1.45; }
.fold .field { margin-bottom: 12px; }

.code-row { display: grid; grid-template-columns: 3rem 1fr 6rem; gap: 8px; align-items: center; margin-bottom: 7px; }
.code-row__key { font-family: var(--serif); font-weight: 600; font-size: 14px; }
.code-row input {
  padding: 5px 2px; font-size: 13.5px; border: 0; border-bottom: 1px solid var(--rule);
  background: transparent; outline: none; min-width: 0; border-radius: 0;
}
.code-row input:focus-visible { border-bottom-color: var(--brand); }

/* ── ข้อความแจ้ง ───────────────────────────────────────── */

.toast {
  position: fixed;
  left: 50%; bottom: calc(20px + var(--safe-b));
  transform: translateX(-50%);
  z-index: 40;
  max-width: min(92vw, 440px);
  padding: 10px 16px;
  background: var(--ink);
  color: var(--ledger);
  font-size: 14px;
  animation: rise .18s ease;
}
.toast[data-kind="bad"] { background: var(--pen); color: #FFF6F2; }

:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}