:root{--bg:#f5f6f8;--card:#fff;--ink:#1c2430;--mute:#6b7685;--line:#e3e7ec;--pri:#2457d6;
--present:#1f9d55;--late:#d99100;--leave:#2b7bd1;--sick:#8a56c9;--absent:#d93a3a;--makeup:#0e9aa7}
@media (prefers-color-scheme:dark){:root{--bg:#14181e;--card:#1d232b;--ink:#e8ecf1;--mute:#93a0b0;--line:#2d3641;--pri:#3d63d6}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 -apple-system,"PingFang TC","Noto Sans TC",sans-serif;padding-bottom:env(safe-area-inset-bottom)}
header{position:sticky;top:0;z-index:5;background:var(--card);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:8px;padding:10px 16px}
header h1{font-size:17px;margin:0;flex:1}
main{max-width:980px;margin:0 auto;padding:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;margin-bottom:12px}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.grow{flex:1}
.mute{color:var(--mute);font-size:14px}
button,input,select{font:inherit;color:inherit}
button{border:1px solid var(--line);background:var(--card);border-radius:10px;padding:9px 14px;cursor:pointer}
button.pri{background:var(--pri);color:#fff;border-color:var(--pri)}
button.sm{padding:5px 10px;font-size:14px}
button.danger{color:var(--absent)}
input,select{border:1px solid var(--line);border-radius:10px;padding:9px 12px;background:var(--card);width:100%}
input[type=date],input[type=month]{width:auto}
label{display:block;font-size:14px;color:var(--mute);margin:10px 0 4px}
.tabs{display:flex;gap:6px;overflow-x:auto;margin-bottom:12px}
.tabs button{white-space:nowrap}
.tabs button.on{background:var(--pri);color:#fff;border-color:var(--pri)}
.cls{display:flex;justify-content:space-between;align-items:center;gap:10px;cursor:pointer}
.badge{font-size:13px;padding:2px 9px;border-radius:99px;background:var(--bg);border:1px solid var(--line)}
.badge.ok{color:var(--present);border-color:var(--present)}
.badge.warn{color:var(--late);border-color:var(--late)}
.stu{padding:6px 0;border-top:1px solid var(--line);display:flex;align-items:center;gap:6px}
.legend{font-size:13px;margin-bottom:8px}
.stu:first-child{border-top:0}
.stu .nm{font-weight:600;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.stu .nm small{font-weight:400;color:var(--mute);margin-left:6px}
.seg{display:grid;grid-template-columns:repeat(6,34px);gap:3px}
.seg button{padding:11px 0;font-size:14px;border-radius:8px}
.seg button.on{color:#fff;border-color:transparent}
.s-present.on{background:var(--present)}.s-late.on{background:var(--late)}.s-leave.on{background:var(--leave)}
.s-sick.on{background:var(--sick)}.s-absent.on{background:var(--absent)}.s-makeup.on{background:var(--makeup)}
.bar{position:sticky;bottom:0;background:var(--card);border-top:1px solid var(--line);padding:10px 16px;display:flex;gap:8px;margin:0 -16px -16px}
.bar button{flex:1}
table{border-collapse:collapse;width:100%;font-size:14px}
th,td{border-bottom:1px solid var(--line);padding:7px 8px;text-align:center;white-space:nowrap}
th:first-child,td:first-child{text-align:left}
.scroll{overflow-x:auto}
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:10px}
.kpi{border:1px solid var(--line);border-radius:10px;padding:10px;text-align:center}
.kpi b{display:block;font-size:24px}
.c-present{color:var(--present)}.c-late{color:var(--late)}.c-leave{color:var(--leave)}.c-sick{color:var(--sick)}.c-absent{color:var(--absent)}.c-makeup{color:var(--makeup)}
td.m{font-weight:700}
#toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#1c2430;color:#fff;padding:10px 18px;border-radius:10px;opacity:0;transition:.2s;pointer-events:none;z-index:20}
#toast.show{opacity:.95}
.login{max-width:360px;margin:12vh auto 0}
.hol{background:#fff3cd;color:#664d03;border-radius:10px;padding:10px 12px;margin-bottom:12px}
dialog{border:1px solid var(--line);border-radius:14px;background:var(--card);color:var(--ink);max-width:420px;width:calc(100% - 32px)}
dialog::backdrop{background:#0008}
/* ---- v2 ---- */
.tabs.top{position:sticky;top:49px;z-index:4;background:var(--bg);padding:6px 0;margin:-16px 0 10px}
.who{font-size:13px;max-width:44vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tag{font-size:12px;font-weight:600;margin-left:3px;padding:0 4px;border-radius:5px}
.t-new{color:var(--present)}.t-transfer{color:var(--leave)}.t-makeup{color:var(--makeup)}.t-trial{color:var(--late)}
.stu .nm .sub{font-weight:400;font-size:12px;color:var(--mute)}
.ctl{display:flex;gap:4px}
.chip{display:inline-block;min-width:26px;text-align:center;padding:1px 6px;border-radius:6px;font-weight:700;font-size:14px;border:1px solid currentColor}
.sheetgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:4px 14px}
.sg{display:flex;justify-content:space-between;align-items:center;gap:6px;padding:4px 0;border-bottom:1px dashed var(--line)}
.inl{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--ink);margin:0}
.checks{display:flex;flex-direction:column;gap:6px;margin:6px 0}
.clickable{cursor:pointer}
.stu.clickable:hover,tr.clickable:hover{background:var(--bg)}
.stu.col{flex-direction:column;align-items:stretch;gap:4px}
td.wrap{white-space:normal;min-width:140px;text-align:left}
textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:9px 12px;background:var(--card);font:inherit;color:inherit}
button[disabled]{opacity:.35}
/* 標注不被截斷：名字可換行，標注獨立一行；窄螢幕隱藏頂部角色文字（選單內仍可看到） */
.stu .nm{white-space:normal;overflow:visible;text-overflow:clip;word-break:break-all;line-height:1.3}
.stu .nm .tag{display:block;margin:1px 0 0;padding:0;font-size:12px}
header h1{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
@media (max-width:560px){.who{display:none}}

/* ---- 手機友善 ---- */
a{color:inherit;text-decoration:none}
.item{display:flex;align-items:center;gap:8px;padding:10px 0;border-top:1px solid var(--line)}
.item:first-of-type{border-top:0}
.item.col{flex-direction:column;align-items:stretch;gap:4px}
.item .ctl{flex-wrap:wrap}
.counts{display:flex;flex-wrap:wrap;gap:2px 12px;font-size:14px}
.sm-t{font-size:13px;font-weight:400}
.wrap2{font-size:14px;white-space:normal;word-break:break-all}
.clickable:active{background:var(--bg)}
@media (max-width:640px){
  /* 分頁：自動換行成兩三排，不用左右滑 */
  .tabs.top{position:static;flex-wrap:wrap;overflow:visible;gap:6px;margin:0 0 12px;padding:0}
  .tabs.top button{flex:1 1 calc(33.3% - 6px);padding:9px 4px;font-size:15px}
  button.sm,select,input,button{min-height:40px}
  button.sm{padding:6px 12px}
  .row input[type=date],.row input[type=month]{flex:1 1 140px;min-width:0}
  .kpis{grid-template-columns:repeat(2,1fr)}
  main{padding:12px}
  .card{padding:12px}
  .bar{margin:0 -12px -12px}
}
/* 勾選框放大、好點 */
input[type=checkbox],input[type=radio]{width:22px!important;height:22px;min-height:0!important;flex:none;accent-color:var(--pri)}
.checks .inl,.inl{padding:6px 0;font-size:16px;gap:10px}

/* 一般學生 5 顆（無補課）；補課學生只有 1 顆「補課」 */
.seg.five{grid-template-columns:repeat(5,34px)}
.seg.one{grid-template-columns:1fr;width:181px}
.seg.one button{font-size:15px}

.seg.two{grid-template-columns:repeat(2,1fr);width:181px}
.seg.two button{font-size:15px}

/* 當日未點名：學生名字小標籤 */
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}
.chipn{border:1px solid var(--line);border-radius:8px;padding:2px 8px;font-size:14px;background:var(--bg)}
.chipn small{margin-left:3px;font-size:11px}

dialog{max-height:92vh;overflow:auto}