/* 대출 카드와 날짜 도장: 연한 세이지 종이, 소나무색 잉크, 청보라 도장 */
:root {
  --paper: #eef1ec;
  --card: #fbfcf9;
  --ink: #1f2a24;
  --ink-soft: #55625a;
  --line: #cfd6cd;
  --pine: #2f5d48;
  --pine-soft: #dfe9e2;
  --stamp: #3a47a3;
  --stamp-soft: #e3e5f5;
  --warn: #9a5b08;
  --warn-soft: #f6ead6;
  --bad: #a33232;
  --bad-soft: #f6e0de;
  --display: "Gowun Batang", "Nanum Myeongjo", "AppleMyungjo", serif;
  --body: "IBM Plex Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --radius: 6px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #151b18; --card: #1d2420; --ink: #e5ebe6; --ink-soft: #a3b0a8; --line: #34403a;
    --pine: #8cc4a6; --pine-soft: #23352c; --stamp: #a9b2f2; --stamp-soft: #262b4a;
    --warn: #e7b56a; --warn-soft: #3a2f1c; --bad: #f09a92; --bad-soft: #3d2423;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #151b18; --card: #1d2420; --ink: #e5ebe6; --ink-soft: #a3b0a8; --line: #34403a;
  --pine: #8cc4a6; --pine-soft: #23352c; --stamp: #a9b2f2; --stamp-soft: #262b4a;
  --warn: #e7b56a; --warn-soft: #3a2f1c; --bad: #f09a92; --bad-soft: #3d2423;
  color-scheme: dark;
}

* { box-sizing: border-box; }
input[type=checkbox] { accent-color: var(--pine); width: 20px; height: 20px; padding: 0; }
html, body { margin: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 15px;
  line-height: 1.6;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.wrap { max-width: 1000px; margin: 0 auto; padding-block: 28px 64px; display: flex; flex-direction: column; gap: 22px; }

h1, h2, h3 { font-family: var(--display); font-weight: 700; margin: 0; text-wrap: balance; letter-spacing: -0.01em; }
h1 { font-size: 30px; line-height: 1.25; }
h2 { font-size: 21px; }
h3 { font-size: 17px; }
p { margin: 0; }
.muted { color: var(--ink-soft); }
.small { font-size: 13px; }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
a { color: var(--stamp); }

/* 상단 */
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.brand { display: flex; align-items: baseline; gap: 10px; text-decoration: none; color: inherit; }
.brand b { font-family: var(--display); font-size: 22px; }
.brand span { font-size: 13px; color: var(--ink-soft); letter-spacing: 0.04em; }

.demo-bar {
  border: 1px dashed var(--stamp); background: var(--stamp-soft); color: var(--ink);
  border-radius: var(--radius); padding: 10px 14px; font-size: 13px;
  display: flex; gap: 8px 18px; flex-wrap: wrap; align-items: center;
}
.demo-bar b { color: var(--stamp); }
.demo-bar button { margin-left: auto; }

/* 카드 */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.card.tight { gap: 10px; }


/* 메인 */
.hero { display: grid; grid-template-columns: 1fr auto; gap: 18px; align-items: end; }
.hero .stampmark {
  font-family: var(--mono); color: var(--stamp); border: 2px solid var(--stamp); border-radius: 4px;
  padding: 6px 10px; transform: rotate(-4deg); font-size: 13px; text-align: center; line-height: 1.3;
}
.doors { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.door {
  all: unset; cursor: pointer; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; display: flex; flex-direction: column; gap: 8px; min-height: 150px;
}
.door:hover { border-color: var(--pine); }
.door:focus-visible { outline: 2px solid var(--stamp); outline-offset: 2px; }
.door .tag { font-family: var(--mono); font-size: 12px; color: var(--ink-soft); letter-spacing: 0.08em; }
.door b { font-family: var(--display); font-size: 20px; }
.door.primary { background: var(--pine); border-color: var(--pine); color: var(--card); }
.door.primary .tag, .door.primary .muted { color: var(--pine-soft); }

/* 폼 */
label.field { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--ink-soft); min-width: 0; }
input, select, textarea {
  font: inherit; font-size: 15px; color: var(--ink); background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 9px 11px; min-width: 0; width: 100%;
}
textarea { min-height: 120px; font-family: var(--mono); font-size: 13px; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--stamp); outline-offset: -1px; border-color: transparent; }
input.code { font-family: var(--mono); font-size: 22px; letter-spacing: 0.18em; text-transform: uppercase; text-align: center; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; }
.row > * { flex: 1 1 140px; }
.row > .shrink { flex: 0 0 auto; }

button, .btn {
  font: inherit; font-size: 14px; font-weight: 500; cursor: pointer; border-radius: var(--radius);
  border: 1px solid var(--line); background: var(--card); color: var(--ink); padding: 9px 14px; white-space: nowrap;
}
button:hover { border-color: var(--ink-soft); }
button:focus-visible { outline: 2px solid var(--stamp); outline-offset: 2px; }
button:disabled { opacity: 0.5; cursor: not-allowed; }
button.go { background: var(--pine); border-color: var(--pine); color: var(--card); }
button.go:hover { filter: brightness(1.08); }
button.stampbtn { background: var(--stamp); border-color: var(--stamp); color: var(--card); }
button.danger { color: var(--bad); border-color: var(--bad); }
button.danger.armed { background: var(--bad); color: var(--card); }
button.link { border: 0; background: none; padding: 4px 6px; color: var(--stamp); }
button.big { font-size: 16px; padding: 12px 18px; }

.err { color: var(--bad); font-size: 13px; }
.note { background: var(--paper); border-radius: var(--radius); padding: 12px 14px; font-size: 13px; color: var(--ink-soft); }
.note ol, .note ul { margin: 4px 0 0; padding-left: 18px; }

/* 상태 칩 */
.chip { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 500; padding: 3px 9px; border-radius: 999px; background: var(--paper); color: var(--ink-soft); white-space: nowrap; }
.chip.ok { background: var(--pine-soft); color: var(--pine); }
.chip.on { background: var(--stamp-soft); color: var(--stamp); }
.chip.warn { background: var(--warn-soft); color: var(--warn); }
.chip.bad { background: var(--bad-soft); color: var(--bad); }

/* 학생 정보 */
.who { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.who .name { font-family: var(--display); font-size: 24px; }

/* 회차 카드 */
.meetings { display: flex; flex-direction: column; gap: 12px; }
.meeting { display: grid; grid-template-columns: 92px 1fr auto; gap: 16px; align-items: center; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.datestamp {
  border: 2px solid var(--stamp); color: var(--stamp); border-radius: 4px; text-align: center; padding: 6px 4px;
  font-family: var(--mono); line-height: 1.2; transform: rotate(-3deg);
}
.datestamp .m { font-size: 12px; letter-spacing: 0.08em; }
.datestamp .d { font-size: 26px; font-weight: 600; }
.datestamp .w { font-size: 12px; }
.meeting .info { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.meeting .info .t { font-family: var(--display); font-size: 18px; }
.meeting .act { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }
.seats { display: flex; gap: 3px; flex-wrap: wrap; max-width: 260px; }
.seats i { width: 9px; height: 9px; border-radius: 2px; background: var(--pine-soft); border: 1px solid var(--pine); }
.seats i.taken { background: var(--pine); }

/* 표 */
.tablebox { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { font-size: 12px; color: var(--ink-soft); font-weight: 500; letter-spacing: 0.04em; background: var(--paper); position: sticky; top: 0; }
tr:last-child td { border-bottom: 0; }
td.num, th.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* 탭 */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); overflow-x: auto; }
.tabs button { border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: none; padding: 10px 14px; color: var(--ink-soft); }
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--pine); }

.stats { display: flex; gap: 10px; flex-wrap: wrap; }
.stat { flex: 1 1 120px; border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 12px; background: var(--card); }
.stat b { display: block; font-family: var(--mono); font-size: 20px; font-variant-numeric: tabular-nums; }
.stat span { font-size: 12px; color: var(--ink-soft); }

.toast {
  position: fixed; left: 50%; bottom: calc(20px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%);
  background: var(--ink); color: var(--card); padding: 10px 16px; border-radius: var(--radius); font-size: 14px;
  max-width: calc(100% - 32px); z-index: 20;
}
.toast.bad { background: var(--bad); }

.center { max-width: 420px; margin: 0 auto; width: 100%; }
.spread { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }

@media (max-width: 680px) {
  h1 { font-size: 25px; }
  .doors { grid-template-columns: 1fr; }
  .door { min-height: 0; }
  .hero { grid-template-columns: 1fr; }
  .hero .stampmark { justify-self: start; }
  .meeting { grid-template-columns: 70px 1fr; }
  .meeting .act { grid-column: 1 / -1; align-items: stretch; }
  .datestamp .d { font-size: 22px; }
}

@media print {
  body { background: #fff; color: #000; }
  .noprint, .top, .tabs, .demo-bar { display: none !important; }
  .print-codes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
  .print-codes div { border: 1px dashed #999; padding: 12px; font-size: 13px; }
}
.print-codes { display: none; }
@media print { .print-codes { display: grid; } }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }