/* 강원희국어학원 예비고1 정규 과정 기록 — 강사 화면 */
:root {
  --ink: #1b2559; --ink-2: #3b4a8a; --text: #1f2430; --muted: #6b7280;
  --bg: #f4f6fb; --card: #ffffff; --line: #d9deea; --line-2: #e9edf5;
  --ok: #1f8f4e; --warn: #c7731a; --bad: #c0392b; --info: #2d6cdf;
  --radius: 10px; --shadow: 0 1px 3px rgba(20, 30, 60, .08);
  font-size: 15px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: "IBM Plex Sans KR", "Pretendard", "Malgun Gothic", system-ui, sans-serif; line-height: 1.45; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--info); }
[hidden] { display: none !important; }

/* ── 로그인 ── */
#gate { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; background: var(--bg); z-index: 50; }
#gate .box { width: min(420px, 92vw); background: var(--card); border-radius: 14px; box-shadow: var(--shadow); padding: 28px 24px; text-align: center; }
#gate h1 { font-size: 18px; margin: 0 0 8px; color: var(--ink); }
#gate p { margin: 0 0 18px; color: var(--muted); font-size: 14px; }
#gate .err { color: var(--bad); font-size: 13px; min-height: 1.4em; margin-top: 12px; }
.btn { border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 8px 14px; }
.btn:hover { background: #f7f8fc; }
.btn.primary { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn.primary:hover { background: var(--ink-2); }
.btn.danger { color: var(--bad); border-color: #efc4c0; }
.btn.sm { padding: 4px 9px; font-size: 13px; border-radius: 6px; }
.btn.wide { width: 100%; padding: 11px; }

/* ── 머리 ── */
header.top { position: sticky; top: 0; z-index: 20; background: var(--ink); color: #fff; padding: 8px 14px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
header.top h1 { font-size: 15px; margin: 0; font-weight: 600; white-space: nowrap; }
header.top .spacer { flex: 1; }
header.top .acct { display: flex; align-items: center; gap: 8px; font-size: 13px; }
header.top .acct .role { background: rgba(255,255,255,.18); padding: 2px 8px; border-radius: 999px; }
header.top .acct button { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.4); }
#saveState { font-size: 12px; opacity: .85; min-width: 70px; }

nav.tabs { background: #fff; border-bottom: 1px solid var(--line); display: flex; gap: 2px; padding: 0 10px; overflow-x: auto; position: sticky; top: 46px; z-index: 19; }
nav.tabs button { border: 0; background: transparent; padding: 10px 12px; border-bottom: 3px solid transparent; color: var(--muted); white-space: nowrap; }
nav.tabs button.on { color: var(--ink); border-bottom-color: var(--ink); font-weight: 600; }

main { padding: 12px 14px 60px; max-width: 1500px; margin: 0 auto; }
section.tab { display: none; }
section.tab.on { display: block; }

/* ── 도구 줄 ── */
.toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin: 6px 0 12px; }
.toolbar .week { display: flex; align-items: center; gap: 4px; }
.toolbar .week b { font-size: 16px; color: var(--ink); min-width: 170px; text-align: center; }
.toolbar select, .toolbar input[type=search], .toolbar input[type=text] { border: 1px solid var(--line); border-radius: 8px; padding: 7px 9px; background: #fff; }
.toolbar .hint { color: var(--muted); font-size: 13px; }

/* ── 표 ── */
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 12px 14px; margin-bottom: 14px; }
.card h2 { font-size: 15px; margin: 0 0 10px; color: var(--ink); }
.card h3 { font-size: 14px; margin: 14px 0 6px; color: var(--ink-2); }
.tbl-wrap { overflow-x: auto; }
table.grid { border-collapse: collapse; width: 100%; font-size: 13.5px; }
table.grid th, table.grid td { border: 1px solid var(--line-2); padding: 4px 6px; text-align: center; white-space: nowrap; }
table.grid th { background: #f0f3fa; color: var(--ink-2); font-weight: 600; position: sticky; top: 0; }
table.grid td.l, table.grid th.l { text-align: left; }
table.grid tr:hover td { background: #fafbff; }
table.grid .sticky { position: sticky; left: 0; background: #fff; z-index: 2; }
table.grid tr:hover .sticky { background: #fafbff; }
table.grid input, table.grid select { border: 1px solid transparent; background: transparent; padding: 4px 4px; border-radius: 6px; width: 100%; min-width: 0; text-align: center; }
table.grid input:focus, table.grid select:focus { border-color: var(--info); background: #fff; outline: none; }
table.grid input.num { width: 52px; }
table.grid input.txt { width: 150px; text-align: left; }
table.grid td.calc { color: var(--muted); }
table.grid td.lp { font-weight: 600; color: var(--ink); }
table.grid tr.left td { color: var(--muted); }
.saved { animation: flash 1.2s ease-out; }
@keyframes flash { 0% { background: #dff5e6; } 100% { background: transparent; } }
.bad { color: var(--bad); }
.warn { color: var(--warn); }
.ok { color: var(--ok); }
.muted { color: var(--muted); }
.tag { display: inline-block; padding: 1px 7px; border-radius: 999px; font-size: 12px; background: #eef1f8; color: var(--ink-2); }
.tag.s퇴원, .tag.s휴원 { background: #f3f4f6; color: var(--muted); }
.tag.s예약 { background: #fff4e5; color: var(--warn); }

/* ── 카드(폰) ── */
.cards { display: none; }
.stu-card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 10px 12px; margin-bottom: 10px; }
.stu-card .head { display: flex; align-items: baseline; gap: 8px; margin-bottom: 6px; }
.stu-card .head b { font-size: 16px; }
.stu-card .row { display: grid; grid-template-columns: 92px 1fr; gap: 6px 8px; align-items: center; padding: 3px 0; border-top: 1px dashed var(--line-2); }
.stu-card .row label { color: var(--muted); font-size: 13px; }
.stu-card .row input, .stu-card .row select { border: 1px solid var(--line); border-radius: 7px; padding: 6px 8px; width: 100%; background: #fff; }
.stu-card .seg { display: flex; flex-wrap: wrap; gap: 4px; }
.stu-card .seg button { border: 1px solid var(--line); background: #fff; border-radius: 7px; padding: 5px 9px; font-size: 13px; }
.stu-card .seg button.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.stu-card .lp { text-align: right; color: var(--ink); font-weight: 600; margin-top: 6px; }

/* ── 양식 ── */
form.inline { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; align-items: end; }
form.inline label { display: flex; flex-direction: column; font-size: 12px; color: var(--muted); gap: 3px; }
form.inline input, form.inline select, form.inline textarea { border: 1px solid var(--line); border-radius: 7px; padding: 7px 8px; background: #fff; }
form.inline .full { grid-column: 1 / -1; }
textarea { border: 1px solid var(--line); border-radius: 7px; padding: 7px 8px; width: 100%; min-height: 80px; }
.msg { font-size: 13px; color: var(--muted); margin: 6px 0; min-height: 1.3em; }
.msg.err { color: var(--bad); }
.msg.ok { color: var(--ok); }
.kv { display: grid; grid-template-columns: 160px 1fr; gap: 6px 10px; align-items: center; font-size: 14px; }
.kv input { border: 1px solid var(--line); border-radius: 7px; padding: 6px 8px; width: 110px; }
details { margin: 8px 0; }
details summary { cursor: pointer; color: var(--ink-2); font-weight: 600; }
.mrow { display: flex; gap: 6px; align-items: center; margin: 4px 0; }
.mrow input { border: 1px solid var(--line); border-radius: 7px; padding: 6px 8px; flex: 1; }
.mrow select { border: 1px solid var(--line); border-radius: 7px; padding: 6px 8px; }

#toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: #1f2430; color: #fff; padding: 10px 16px; border-radius: 999px; font-size: 14px; opacity: 0; transition: opacity .2s; pointer-events: none; z-index: 60; }
#toast.on { opacity: .95; }

@media (max-width: 760px) {
  :root { font-size: 15px; }
  header.top h1 { font-size: 14px; }
  nav.tabs { top: 0; position: static; }
  main { padding: 10px 10px 70px; }
  .tbl-wrap.input-grid { display: none; }
  .cards { display: block; }
  .toolbar .week b { min-width: 0; }
  .kv { grid-template-columns: 1fr; }
}
@media print {
  header.top, nav.tabs, .toolbar, .btn { display: none !important; }
}