.teacher-signin{max-width:34rem;margin:3rem auto;padding:1.5rem;color:#101b30;background:#fff;border:1px solid #d9e6f2;border-radius:16px}
.teacher-signin h1{font-family:"Noto Sans TC","Segoe UI",sans-serif;font-size:2rem;line-height:1.3;margin:1.5rem 0 1rem}
.teacher-signin p,.teacher-tools p{max-width:70ch;line-height:1.7}
.teacher-signin form,.teacher-tools form{display:grid;gap:1rem;max-width:34rem}
.teacher-signin label,.teacher-tools label{display:grid;gap:.5rem;font-size:1rem}
.teacher-signin input,.teacher-tools input{font:inherit;min-width:0;max-width:100%;min-height:48px;border:1px solid #b8cee2;border-radius:8px;padding:.6rem .8rem;background:#fff;color:#101b30;box-sizing:border-box}
.teacher-signin button,.teacher-tools button{font:inherit;background:#006dcc;color:#fff;border:0;border-radius:8px;padding:.7rem 1rem;min-height:48px;cursor:pointer}
.teacher-signin button:hover,.teacher-tools button:hover{background:#005eb2}
.teacher-signin button:disabled,.teacher-tools button:disabled{background:#54647a;cursor:wait}
.teacher-signin :focus-visible,.teacher-tools :focus-visible{outline:3px solid #006dcc;outline-offset:3px}
.teacher-signin .teacher-check{display:flex;align-items:center;gap:.75rem}
.teacher-signin input[type=checkbox]{min-height:24px;width:24px;accent-color:#006dcc}
.teacher-actions{display:flex;gap:1rem;flex-wrap:wrap;margin:1rem 0;align-items:center}
.teacher-actions a{color:#006dcc;text-underline-offset:.2em;overflow-wrap:anywhere}
.teacher-tools{margin:1.5rem 0;padding:1.5rem;background:#fff;border:1px solid #d9e6f2;border-radius:16px}
.teacher-tools h2{margin-top:0;font-size:1.5rem}
.teacher-tools [role=alert],.teacher-signin [role=alert]{color:#a53242}
.teacher-visits{margin-block:2rem}.teacher-visits th,.teacher-visits td{overflow-wrap:anywhere}
#teacherActionStatus{color:#a53242;max-width:70ch;line-height:1.7;margin:1rem 0}
@media(max-width:560px){.teacher-signin{margin:1rem;padding:1rem}.teacher-tools{padding:1rem}.teacher-actions{align-items:stretch;flex-direction:column}.teacher-signin h1{font-size:1.65rem}}