/* Teacher portal — quiet, editorial and purposefully restrained. */
body[data-page="teacher"] {
    --teacher-ink: #18201f;
    --teacher-muted: #66706d;
    --teacher-line: #e5e9e7;
    --teacher-canvas: #f4f6f4;
    --teacher-surface: #ffffff;
    --teacher-accent: #1e6657;
    --teacher-accent-dark: #174f44;
    --teacher-accent-soft: #eaf3f0;
    --teacher-blue: #456a80;
    --teacher-sand: #9a7345;
    color: var(--teacher-ink);
    background: var(--teacher-canvas) !important;
}

body[data-page="teacher"] .eyebrow {
    color: var(--teacher-accent);
    font-size: 11px;
    font-weight: 750;
    letter-spacing: .14em !important;
}

body[data-page="teacher"] .brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    color: #fff;
    background: var(--teacher-accent);
    border-radius: 11px;
    flex: 0 0 auto;
}

body[data-page="teacher"] .brand-mark svg {
    width: 22px;
    height: 22px;
    stroke: currentColor;
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Login */
body[data-page="teacher"].login-page {
    display: block;
    padding: 34px;
    background:
        radial-gradient(circle at 8% 0%, rgba(30, 102, 87, .10), transparent 34%),
        radial-gradient(circle at 100% 100%, rgba(154, 115, 69, .08), transparent 28%),
        #eef1ee !important;
}

body[data-page="teacher"].login-page #loginView {
    display: grid;
    place-items: center;
    width: 100%;
    min-height: calc(100vh - 68px);
}

body[data-page="teacher"] .login-shell {
    display: grid;
    grid-template-columns: minmax(440px, 1.16fr) minmax(390px, .84fr);
    width: min(100%, 1060px);
    min-height: 650px;
    overflow: hidden;
    background: var(--teacher-surface);
    border: 1px solid rgba(23, 79, 68, .10);
    border-radius: 24px;
    box-shadow: 0 30px 80px rgba(31, 48, 43, .13);
}

body[data-page="teacher"] .login-story {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
    padding: 48px 52px;
    color: #eef6f2;
    background: #163d36;
}

body[data-page="teacher"] .login-story::before,
body[data-page="teacher"] .login-story::after {
    content: "";
    position: absolute;
    border: 1px solid rgba(255,255,255,.09);
    border-radius: 50%;
    pointer-events: none;
}

body[data-page="teacher"] .login-story::before { width: 420px; height: 420px; right: -160px; top: -155px; }
body[data-page="teacher"] .login-story::after { width: 260px; height: 260px; left: -100px; bottom: -100px; }

body[data-page="teacher"] .login-brand,
body[data-page="teacher"] .login-mobile-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    font-weight: 700;
}

body[data-page="teacher"] .login-brand .brand-mark { background: rgba(255,255,255,.12); }
body[data-page="teacher"] .login-story-copy { position: relative; z-index: 1; max-width: 430px; }
body[data-page="teacher"] .login-story-copy .eyebrow { color: #9fc3b8; }
body[data-page="teacher"] .login-story-copy h2 {
    margin: 17px 0 20px;
    color: #fff;
    font-size: clamp(34px, 4vw, 48px);
    font-weight: 600;
    line-height: 1.32;
    letter-spacing: -.045em !important;
}
body[data-page="teacher"] .login-story-copy p { max-width: 390px; color: #b8ccc6; font-size: 15px; line-height: 1.9; }
body[data-page="teacher"] .login-story-foot { position: relative; z-index: 1; color: #8eaaa2; font-size: 12px; }

body[data-page="teacher"] .login-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: auto;
    max-width: none;
    padding: 58px 62px;
    border: 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
}

body[data-page="teacher"] .login-mobile-brand { display: none; color: var(--teacher-ink); }
body[data-page="teacher"] .login-heading { margin-bottom: 36px; }
body[data-page="teacher"] .login-heading h1 {
    margin: 9px 0 7px;
    color: var(--teacher-ink);
    font-size: 30px;
    font-weight: 680;
    letter-spacing: -.035em !important;
    text-align: left;
}
body[data-page="teacher"] .login-container .subtitle { margin: 0; color: var(--teacher-muted); font-size: 14px; text-align: left; }
body[data-page="teacher"] .login-container .form-item { margin-bottom: 19px; }
body[data-page="teacher"] .login-container .form-item label { display: flex; align-items: center; margin-bottom: 8px; color: #39413f; font-size: 12px; font-weight: 650; }
body[data-page="teacher"] .school-lookup-link { margin-left: auto; color: var(--teacher-accent); font-size: 12px; font-weight: 600; text-decoration: none; }
body[data-page="teacher"] .school-lookup-link:hover { color: var(--teacher-accent-dark); }
body[data-page="teacher"] .login-container input {
    height: 48px;
    padding: 0 14px;
    background: #fbfcfb !important;
    border-color: #dce2df !important;
    border-radius: 9px !important;
    font-size: 14px;
}
body[data-page="teacher"] .login-container input:focus { background: #fff !important; border-color: var(--teacher-accent) !important; box-shadow: 0 0 0 3px rgba(30,102,87,.10) !important; }
body[data-page="teacher"] .login-container .submit-btn {
    height: 49px;
    margin-top: 5px;
    padding: 0 18px;
    background: var(--teacher-accent) !important;
    border-color: var(--teacher-accent) !important;
    border-radius: 9px !important;
    font-size: 14px;
    font-weight: 680;
}
body[data-page="teacher"] .login-container .submit-btn:hover { background: var(--teacher-accent-dark) !important; border-color: var(--teacher-accent-dark) !important; }
body[data-page="teacher"] .login-container .error-msg { min-height: 20px; margin: 10px 0 0; color: #b54747; }
body[data-page="teacher"] .login-links { display: flex; justify-content: center; gap: 5px; margin-top: 22px; padding-top: 20px; color: #8b9491; border-color: #edf0ee; font-size: 12px; }
body[data-page="teacher"] .login-links a { margin: 0; color: var(--teacher-accent); font-weight: 650; text-decoration: none; }

/* Dashboard chrome */
body[data-page="teacher"].dashboard-page { background: var(--teacher-canvas) !important; }
body[data-page="teacher"] .teacher-header {
    position: sticky;
    z-index: 50;
    top: 0;
    height: 74px;
    padding: 0 max(28px, calc((100vw - 1280px) / 2));
    background: rgba(255,255,255,.94) !important;
    border: 0 !important;
    border-bottom: 1px solid var(--teacher-line) !important;
    box-shadow: 0 1px 0 rgba(22,34,30,.02) !important;
    backdrop-filter: blur(16px);
}
body[data-page="teacher"] .teacher-brand { display: flex; align-items: center; gap: 12px; }
body[data-page="teacher"] .teacher-brand > div > span { display: block; color: var(--teacher-accent); font-size: 10px; font-weight: 800; letter-spacing: .18em !important; }
body[data-page="teacher"] .teacher-brand h1 { margin-top: 1px; color: var(--teacher-ink); font-size: 16px; font-weight: 680; }
body[data-page="teacher"] .teacher-header .user-info { gap: 11px; color: #53605c; font-size: 12px; }
body[data-page="teacher"] .teacher-avatar { display: grid; place-items: center; width: 32px; height: 32px; color: var(--teacher-accent); background: var(--teacher-accent-soft); border: 1px solid #d8e8e3; border-radius: 50%; font-size: 12px; font-weight: 750; }
body[data-page="teacher"] .teacher-header .logout-btn { padding: 7px 12px; color: #626c69 !important; background: transparent !important; border-color: #dce2df !important; border-radius: 8px !important; }
body[data-page="teacher"] .teacher-header .logout-btn:hover { color: var(--teacher-accent) !important; background: var(--teacher-accent-soft) !important; border-color: #c8ddd6 !important; }

body[data-page="teacher"] .container { max-width: 1280px; padding: 36px 28px 60px; }
body[data-page="teacher"] .workspace-intro { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin: 0 2px 28px; }
body[data-page="teacher"] .workspace-intro .eyebrow { margin: 0 0 8px; }
body[data-page="teacher"] .workspace-intro h2 { margin: 0 0 7px; color: var(--teacher-ink); font-size: 28px; font-weight: 650; letter-spacing: -.035em !important; }
body[data-page="teacher"] .workspace-intro > div > p:last-child { margin: 0; color: var(--teacher-muted); font-size: 13px; }
body[data-page="teacher"] .workspace-status { display: flex; align-items: center; gap: 8px; padding: 8px 11px; color: #68736f; background: rgba(255,255,255,.6); border: 1px solid var(--teacher-line); border-radius: 999px; font-size: 11px; white-space: nowrap; }
body[data-page="teacher"] .workspace-status i { width: 6px; height: 6px; background: #3d9878; border-radius: 50%; box-shadow: 0 0 0 4px rgba(61,152,120,.10); }

body[data-page="teacher"] .teacher-workspace-nav {
    gap: 28px;
    margin-bottom: 22px;
    padding: 0 2px;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
    background: transparent;
    border: 0;
    border-bottom: 1px solid #dfe4e1;
    border-radius: 0;
}
body[data-page="teacher"] .teacher-workspace-nav::-webkit-scrollbar { display: none; }
body[data-page="teacher"] .teacher-workspace-nav button {
    position: relative;
    padding: 0 1px 13px;
    color: #737c79;
    border-radius: 0 !important;
    font-size: 13px;
    font-weight: 600;
}
body[data-page="teacher"] .teacher-workspace-nav button::after { content: ""; position: absolute; right: 0; bottom: -1px; left: 0; height: 2px; background: transparent; }
body[data-page="teacher"] .teacher-workspace-nav button:hover { color: var(--teacher-ink); }
body[data-page="teacher"] .teacher-workspace-nav button.active { color: var(--teacher-accent); background: transparent !important; }
body[data-page="teacher"] .teacher-workspace-nav button.active::after { background: var(--teacher-accent); }

body[data-page="teacher"] .overview { gap: 14px; margin-bottom: 14px; }
body[data-page="teacher"] .overview-card {
    min-height: 142px;
    padding: 25px;
    gap: 18px;
    border-color: var(--teacher-line) !important;
    border-radius: 15px !important;
    box-shadow: 0 8px 28px rgba(31,48,43,.045) !important;
}
body[data-page="teacher"] .overview-card .icon { width: 46px; height: 46px; border-radius: 13px !important; }
body[data-page="teacher"] .overview-card .icon svg { width: 23px; height: 23px; stroke: currentColor; stroke-width: 1.65; stroke-linecap: round; stroke-linejoin: round; }
body[data-page="teacher"] .overview-card .icon.green { color: var(--teacher-accent); background: var(--teacher-accent-soft); }
body[data-page="teacher"] .overview-card .icon.blue { color: var(--teacher-blue); background: #edf3f5; }
body[data-page="teacher"] .overview-card .icon.orange { color: var(--teacher-sand); background: #f5f0e9; }
body[data-page="teacher"] .overview-card .info { min-width: 0; }
body[data-page="teacher"] .overview-card .info .number { overflow: hidden; color: var(--teacher-ink); font-size: 28px; font-weight: 650; letter-spacing: -.04em !important; text-overflow: ellipsis; white-space: nowrap; }
body[data-page="teacher"] .overview-card:last-child .info .number { font-size: 20px; }
body[data-page="teacher"] .overview-card .info .label { margin-top: 5px; color: #7c8582; font-size: 12px; }

body[data-page="teacher"] .card {
    padding: 25px;
    border-color: var(--teacher-line) !important;
    border-radius: 15px !important;
    box-shadow: 0 8px 28px rgba(31,48,43,.04) !important;
}
body[data-page="teacher"] .card h3 { color: var(--teacher-ink); font-size: 16px; font-weight: 680; }
body[data-page="teacher"] .section-subtitle { color: #7b8581; font-size: 12px; }
body[data-page="teacher"] .scope-card { margin-bottom: 0; }
body[data-page="teacher"] .scope-card .section-header { margin-bottom: 17px; }
body[data-page="teacher"] .scope-tag { padding: 7px 12px; color: var(--teacher-accent) !important; background: var(--teacher-accent-soft) !important; border: 1px solid #d7e7e2; font-size: 12px; font-weight: 600; }
body[data-page="teacher"] .scope-tag.empty { color: #8a693f !important; background: #f7f1e9 !important; border-color: #eadcc9; }

body[data-page="teacher"] .btn { min-height: 36px; padding: 8px 14px; border-radius: 8px !important; font-size: 12px; font-weight: 650; }
body[data-page="teacher"] .btn-primary { background: var(--teacher-accent) !important; border-color: var(--teacher-accent) !important; }
body[data-page="teacher"] .btn-primary:hover { background: var(--teacher-accent-dark) !important; border-color: var(--teacher-accent-dark) !important; }
body[data-page="teacher"] .btn-outline { color: #59635f !important; background: #fff !important; border-color: #dce2df !important; }

body[data-page="teacher"] .filter-bar { display: grid; grid-template-columns: 170px 170px minmax(220px, 1fr); gap: 12px; margin: 0 0 18px; padding: 15px; background: #f8faf8; border: 1px solid #edf0ee; border-radius: 11px; }
body[data-page="teacher"] .filter-item label { display: block; margin: 0 0 6px; color: #6e7875; font-size: 11px; font-weight: 650; }
body[data-page="teacher"] .filter-item select,
body[data-page="teacher"] .filter-item input { width: 100%; height: 38px; min-width: 0; padding: 0 11px; background: #fff; border-color: #dce2df !important; border-radius: 8px !important; font-size: 12px; }
body[data-page="teacher"] .student-total { color: var(--teacher-accent); background: var(--teacher-accent-soft); border-radius: 999px; padding: 5px 10px; font-size: 11px; font-weight: 650; }

body[data-page="teacher"] .table-container { overflow-x: auto; border-color: #e6eae8; border-radius: 10px !important; }
body[data-page="teacher"] table { min-width: 780px; }
body[data-page="teacher"] th { height: 43px; padding: 11px 14px; color: #6d7673 !important; background: #f8faf9 !important; font-size: 11px; font-weight: 700; }
body[data-page="teacher"] td { padding: 13px 14px; color: #515b58; font-size: 12px; }
body[data-page="teacher"] td strong { color: var(--teacher-ink); font-weight: 650; }
body[data-page="teacher"] tr:hover { background: #fafcfb !important; }
body[data-page="teacher"] .loading { color: #89918f; }

body[data-page="teacher"] .announcement-admin-item { padding: 17px 18px; background: #fafbf9; border-color: var(--teacher-line); border-radius: 10px; }
body[data-page="teacher"] .modal-overlay { backdrop-filter: blur(6px); }
body[data-page="teacher"] .modal { padding: 27px; border-radius: 15px !important; box-shadow: 0 28px 70px rgba(21,40,34,.20) !important; }
body[data-page="teacher"] .modal-header h3 { color: var(--teacher-ink); font-size: 17px; font-weight: 680; }
body[data-page="teacher"] .modal input,
body[data-page="teacher"] .modal select,
body[data-page="teacher"] .modal textarea { border-radius: 8px !important; border-color: #dce2df !important; }

/* Live classroom */
body[data-page="teacher"] .classroom-nav-button { display: inline-flex; align-items: center; gap: 7px; }
body[data-page="teacher"] .classroom-live-dot { width: 6px; height: 6px; background: #4a9c7f; border-radius: 50%; box-shadow: 0 0 0 4px rgba(74,156,127,.11); }
body[data-page="teacher"] .lesson-prep-nav-button { display: inline-flex; align-items: center; gap: 6px; }
body[data-page="teacher"] .lesson-prep-nav-button svg { width: 15px; height: 15px; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
body[data-page="teacher"] .classroom-hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    margin-bottom: 16px;
    padding: 27px 29px;
    color: #edf7f3;
    background: linear-gradient(118deg, #173f37 0%, #1e6657 65%, #347c6b 100%);
    border-radius: 16px;
    box-shadow: 0 14px 34px rgba(23,79,68,.14);
}
body[data-page="teacher"] .classroom-kicker { display: block; margin-bottom: 8px; color: #a9cec2; font-size: 9px; font-weight: 800; letter-spacing: .18em; }
body[data-page="teacher"] .classroom-hero h3 { margin: 0 0 7px; color: #fff; font-size: 23px; font-weight: 650; letter-spacing: -.025em; }
body[data-page="teacher"] .classroom-hero p { margin: 0; color: #bed5ce; font-size: 12px; }
body[data-page="teacher"] .classroom-context { display: grid; grid-template-columns: repeat(3, minmax(118px, 1fr)); gap: 9px; min-width: min(100%, 420px); }
body[data-page="teacher"] .classroom-context label,
body[data-page="teacher"] .classroom-knowledge-toolbar label { display: block; min-width: 0; }
body[data-page="teacher"] .classroom-context label > span { display: block; margin: 0 0 5px 2px; color: #bcd6ce; font-size: 9px; font-weight: 700; }
body[data-page="teacher"] .classroom-context select {
    width: 100%; height: 39px; padding: 0 30px 0 11px; color: #1f3d36; background: #f8fcfa; border: 1px solid rgba(255,255,255,.18); border-radius: 8px; font-size: 12px; outline: none;
}
body[data-page="teacher"] .classroom-context select:focus { box-shadow: 0 0 0 3px rgba(255,255,255,.13); }

body[data-page="teacher"] .classroom-layout { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 16px; align-items: start; }
body[data-page="teacher"] .classroom-layout > .card { margin: 0; padding: 0; overflow: hidden; }
body[data-page="teacher"] .classroom-roster { position: sticky; top: 91px; }
body[data-page="teacher"] .classroom-panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 20px 20px 15px; }
body[data-page="teacher"] .classroom-panel-heading h3 { margin: 0 0 4px; }
body[data-page="teacher"] .classroom-panel-heading p { margin: 0; color: #86908d; font-size: 10px; }
body[data-page="teacher"] .classroom-count { padding: 5px 8px; color: var(--teacher-accent); background: var(--teacher-accent-soft); border-radius: 999px; font-size: 10px; font-weight: 700; white-space: nowrap; }
body[data-page="teacher"] .classroom-student-search { position: relative; margin: 0 16px 12px; }
body[data-page="teacher"] .classroom-student-search svg { position: absolute; top: 10px; left: 11px; width: 16px; height: 16px; color: #81908b; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; pointer-events: none; }
body[data-page="teacher"] .classroom-student-search input { width: 100%; height: 37px; padding: 0 11px 0 35px; background: #f7f9f8; border: 1px solid #e3e8e5; border-radius: 8px; color: var(--teacher-ink); font-size: 11px; outline: none; }
body[data-page="teacher"] .classroom-student-search input:focus { background: #fff; border-color: #a9cbc1; box-shadow: 0 0 0 3px rgba(30,102,87,.07); }
body[data-page="teacher"] .classroom-student-list { max-height: 650px; overflow-y: auto; padding: 0 9px 12px; scrollbar-width: thin; scrollbar-color: #d9e1dd transparent; }
body[data-page="teacher"] .classroom-student-item { display: grid; grid-template-columns: 37px minmax(0, 1fr) auto; align-items: center; gap: 10px; width: 100%; margin: 2px 0; padding: 10px; color: inherit; background: transparent; border: 1px solid transparent; border-radius: 10px; text-align: left; cursor: pointer; transition: background .15s, border-color .15s; }
body[data-page="teacher"] .classroom-student-item:hover { background: #f7faf8; }
body[data-page="teacher"] .classroom-student-item.active { background: var(--teacher-accent-soft); border-color: #d2e5df; }
body[data-page="teacher"] .classroom-roster-avatar { display: grid; place-items: center; width: 37px; height: 37px; color: #58716a; background: #edf1ef; border-radius: 10px; font-size: 13px; font-weight: 750; }
body[data-page="teacher"] .classroom-student-item.active .classroom-roster-avatar { color: #fff; background: var(--teacher-accent); }
body[data-page="teacher"] .classroom-roster-info { min-width: 0; }
body[data-page="teacher"] .classroom-roster-info strong,
body[data-page="teacher"] .classroom-roster-info small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
body[data-page="teacher"] .classroom-roster-info strong { color: #293330; font-size: 12px; font-weight: 670; }
body[data-page="teacher"] .classroom-roster-info small { margin-top: 3px; color: #929b98; font-size: 9px; }
body[data-page="teacher"] .classroom-roster-score { color: #74807c; font-size: 9px; white-space: nowrap; }

body[data-page="teacher"] .classroom-knowledge { min-height: 500px; }
body[data-page="teacher"] .classroom-empty { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 7px; min-height: 420px; padding: 30px; color: #8b9592; text-align: center; }
body[data-page="teacher"] .classroom-empty strong { color: #56615e; font-size: 13px; }
body[data-page="teacher"] .classroom-empty span { max-width: 360px; font-size: 11px; line-height: 1.6; }
body[data-page="teacher"] .classroom-empty.compact { min-height: 130px; padding: 22px 14px; }
body[data-page="teacher"] .classroom-empty.error strong { color: #a64d4d; }
body[data-page="teacher"] .classroom-empty-icon { display: grid; place-items: center; width: 52px; height: 52px; margin-bottom: 6px; color: var(--teacher-accent); background: var(--teacher-accent-soft); border-radius: 15px; }
body[data-page="teacher"] .classroom-empty-icon svg { width: 27px; height: 27px; stroke: currentColor; stroke-width: 1.45; stroke-linecap: round; stroke-linejoin: round; }
body[data-page="teacher"] #classroomKnowledgeContent { padding: 23px; }
body[data-page="teacher"] .classroom-student-heading { display: flex; align-items: center; gap: 13px; padding-bottom: 19px; border-bottom: 1px solid #edf0ee; }
body[data-page="teacher"] .classroom-selected-avatar { display: grid; place-items: center; width: 48px; height: 48px; color: #fff; background: var(--teacher-accent); border-radius: 13px; font-size: 17px; font-weight: 750; }
body[data-page="teacher"] .classroom-student-title { min-width: 0; flex: 1; }
body[data-page="teacher"] .classroom-student-title > span { display: block; margin-bottom: 3px; color: var(--teacher-accent); font-size: 9px; font-weight: 750; letter-spacing: .06em; }
body[data-page="teacher"] .classroom-student-title h3 { margin: 0 0 3px; font-size: 18px; }
body[data-page="teacher"] .classroom-student-title p { margin: 0; color: #84908c; font-size: 10px; }
body[data-page="teacher"] .classroom-detail-link { flex: 0 0 auto; }
body[data-page="teacher"] .classroom-summary { display: grid; grid-template-columns: repeat(4, 1fr); gap: 9px; margin: 17px 0; }
body[data-page="teacher"] .classroom-summary > div { min-height: 75px; padding: 13px 14px; background: #f8faf9; border: 1px solid #edf0ee; border-radius: 10px; }
body[data-page="teacher"] .classroom-summary span { display: block; margin-bottom: 7px; color: #7e8985; font-size: 9px; }
body[data-page="teacher"] .classroom-summary strong { color: #24302d; font-size: 20px; font-weight: 680; letter-spacing: -.03em; }
body[data-page="teacher"] .classroom-summary small { margin-left: 3px; color: #89938f; font-size: 9px; }
body[data-page="teacher"] .classroom-summary-loading { grid-column: 1 / -1; display: grid; place-items: center; color: #89938f; font-size: 11px; }
body[data-page="teacher"] .classroom-knowledge-toolbar { display: grid; grid-template-columns: 180px 180px minmax(180px, 1fr); gap: 10px; padding: 13px; background: #f7f9f8; border: 1px solid #edf0ee; border-radius: 10px; }
body[data-page="teacher"] .classroom-knowledge-toolbar label > span { display: block; margin: 0 0 5px 1px; color: #737f7b; font-size: 9px; font-weight: 650; }
body[data-page="teacher"] .classroom-knowledge-toolbar select,
body[data-page="teacher"] .classroom-knowledge-toolbar input { width: 100%; height: 35px; padding: 0 10px; color: #394440; background: #fff; border: 1px solid #dce3df; border-radius: 7px; font-size: 10px; outline: none; }
body[data-page="teacher"] .classroom-knowledge-toolbar select:focus,
body[data-page="teacher"] .classroom-knowledge-toolbar input:focus { border-color: #a9cbc1; box-shadow: 0 0 0 3px rgba(30,102,87,.06); }
body[data-page="teacher"] .classroom-type-overview { display: flex; gap: 8px; overflow-x: auto; margin: 14px 0; padding-bottom: 2px; }
body[data-page="teacher"] .classroom-type-chip { min-width: 135px; padding: 10px 12px; color: #64706c; background: #fff; border: 1px solid #e3e8e5; border-radius: 9px; text-align: left; cursor: pointer; }
body[data-page="teacher"] .classroom-type-chip:hover,
body[data-page="teacher"] .classroom-type-chip.active { background: var(--teacher-accent-soft); border-color: #cce0da; }
body[data-page="teacher"] .classroom-type-chip span,
body[data-page="teacher"] .classroom-type-chip strong,
body[data-page="teacher"] .classroom-type-chip small { display: block; }
body[data-page="teacher"] .classroom-type-chip span { margin-bottom: 5px; font-size: 9px; }
body[data-page="teacher"] .classroom-type-chip strong { color: #2d3a36; font-size: 13px; }
body[data-page="teacher"] .classroom-type-chip small { margin-top: 3px; color: #8c9693; font-size: 8px; }
body[data-page="teacher"] .classroom-point-list { overflow: hidden; border: 1px solid #e8ecea; border-radius: 10px; }
body[data-page="teacher"] .classroom-point-list-head { display: flex; justify-content: space-between; padding: 10px 13px; color: #7a8581; background: #f8faf9; border-bottom: 1px solid #e8ecea; font-size: 9px; font-weight: 700; }
body[data-page="teacher"] .classroom-point-row { display: grid; grid-template-columns: 48px minmax(0, 1fr) 118px; align-items: center; gap: 11px; min-height: 61px; padding: 9px 13px; border-bottom: 1px solid #eef1ef; }
body[data-page="teacher"] .classroom-point-row:last-child { border-bottom: 0; }
body[data-page="teacher"] .classroom-point-score { display: grid; place-items: center; width: 42px; height: 31px; border-radius: 8px; font-size: 11px; font-weight: 750; }
body[data-page="teacher"] .classroom-point-score.mastered { color: #277156; background: #eaf5ef; }
body[data-page="teacher"] .classroom-point-score.learning { color: #87652f; background: #f8f1e5; }
body[data-page="teacher"] .classroom-point-score.weak { color: #a34d4d; background: #f9ebeb; }
body[data-page="teacher"] .classroom-point-main,
body[data-page="teacher"] .classroom-point-record { min-width: 0; }
body[data-page="teacher"] .classroom-point-main strong,
body[data-page="teacher"] .classroom-point-main small,
body[data-page="teacher"] .classroom-point-record strong,
body[data-page="teacher"] .classroom-point-record small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
body[data-page="teacher"] .classroom-point-main strong { color: #2d3734; font-size: 12px; font-weight: 650; }
body[data-page="teacher"] .classroom-point-main small { margin-top: 4px; color: #909996; font-size: 9px; }
body[data-page="teacher"] .classroom-point-record { text-align: right; }
body[data-page="teacher"] .classroom-point-record strong { color: #7d8784; font-size: 10px; }
body[data-page="teacher"] .classroom-point-record strong.positive { color: #347c61; }
body[data-page="teacher"] .classroom-point-record strong.negative { color: #aa5252; }
body[data-page="teacher"] .classroom-point-record small { margin-top: 4px; color: #9aa29f; font-size: 8px; }
body[data-page="teacher"] .classroom-pagination .btn:disabled { opacity: .45; cursor: not-allowed; }

@media (max-width: 860px) {
    body[data-page="teacher"].login-page { padding: 18px; }
    body[data-page="teacher"].login-page #loginView { min-height: calc(100vh - 36px); }
    body[data-page="teacher"] .login-shell { grid-template-columns: 1fr; width: min(100%, 480px); min-height: 0; }
    body[data-page="teacher"] .login-story { display: none; }
    body[data-page="teacher"] .login-container { padding: 46px 42px; }
    body[data-page="teacher"] .login-mobile-brand { display: flex; margin-bottom: 52px; }
    body[data-page="teacher"] .teacher-header { padding: 0 20px; }
    body[data-page="teacher"] .container { padding: 28px 20px 50px; }
    body[data-page="teacher"] .overview { grid-template-columns: repeat(2, 1fr); }
    body[data-page="teacher"] .overview-card:last-child { grid-column: 1 / -1; }
    body[data-page="teacher"] .classroom-hero { align-items: flex-start; flex-direction: column; }
    body[data-page="teacher"] .classroom-context { width: 100%; }
    body[data-page="teacher"] .classroom-layout { grid-template-columns: 250px minmax(0, 1fr); }
    body[data-page="teacher"] .classroom-summary { grid-template-columns: repeat(2, 1fr); }
    body[data-page="teacher"] .classroom-knowledge-toolbar { grid-template-columns: 1fr 1fr; }
    body[data-page="teacher"] .classroom-point-search { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
    body[data-page="teacher"].login-page { padding: 0; background: #fff !important; }
    body[data-page="teacher"].login-page #loginView { min-height: 100vh; }
    body[data-page="teacher"] .login-shell { width: 100%; min-height: 100vh; border: 0; border-radius: 0; box-shadow: none; }
    body[data-page="teacher"] .login-container { justify-content: flex-start; padding: 34px 24px 28px; }
    body[data-page="teacher"] .login-mobile-brand { margin-bottom: 70px; }
    body[data-page="teacher"] .login-heading h1 { font-size: 27px; }
    body[data-page="teacher"] .teacher-header { min-height: 66px; padding: 9px 14px; flex-wrap: nowrap; }
    body[data-page="teacher"] .teacher-brand .brand-mark { width: 34px; height: 34px; }
    body[data-page="teacher"] .teacher-brand > div > span { display: none; }
    body[data-page="teacher"] .teacher-brand h1 { font-size: 14px; white-space: nowrap; }
    body[data-page="teacher"] .teacher-avatar { display: none; }
    body[data-page="teacher"] #teacherInfo { max-width: 100px; font-size: 11px; }
    body[data-page="teacher"] .teacher-header .logout-btn { padding: 6px 9px; }
    body[data-page="teacher"] .container { padding: 24px 14px 40px; }
    body[data-page="teacher"] .workspace-intro { align-items: flex-start; margin-bottom: 24px; }
    body[data-page="teacher"] .workspace-intro h2 { font-size: 23px; }
    body[data-page="teacher"] .workspace-status { display: none; }
    body[data-page="teacher"] .teacher-workspace-nav { gap: 23px; margin-bottom: 17px; }
    body[data-page="teacher"] .teacher-workspace-nav button { padding-bottom: 11px; }
    body[data-page="teacher"] .overview { grid-template-columns: 1fr; gap: 10px; }
    body[data-page="teacher"] .overview-card,
    body[data-page="teacher"] .overview-card:last-child { grid-column: auto; min-height: 108px; padding: 19px; }
    body[data-page="teacher"] .overview-card .info .number { font-size: 25px; }
    body[data-page="teacher"] .overview-card:last-child .info .number { font-size: 18px; }
    body[data-page="teacher"] .card { padding: 19px; }
    body[data-page="teacher"] .section-header { align-items: flex-start; }
    body[data-page="teacher"] .filter-bar { grid-template-columns: 1fr 1fr; padding: 12px; }
    body[data-page="teacher"] .filter-search { grid-column: 1 / -1; }
    body[data-page="teacher"] .classroom-hero { gap: 20px; padding: 22px 18px; }
    body[data-page="teacher"] .classroom-hero h3 { font-size: 21px; }
    body[data-page="teacher"] .classroom-context { grid-template-columns: 1fr 1fr; }
    body[data-page="teacher"] .classroom-context label:last-child { grid-column: 1 / -1; }
    body[data-page="teacher"] .classroom-layout { grid-template-columns: 1fr; }
    body[data-page="teacher"] .classroom-roster { position: static; }
    body[data-page="teacher"] .classroom-student-list { max-height: 330px; }
    body[data-page="teacher"] #classroomKnowledgeContent { padding: 17px 14px; }
    body[data-page="teacher"] .classroom-student-heading { align-items: flex-start; flex-wrap: wrap; }
    body[data-page="teacher"] .classroom-detail-link { width: 100%; }
    body[data-page="teacher"] .classroom-knowledge-toolbar { grid-template-columns: 1fr; }
    body[data-page="teacher"] .classroom-point-search { grid-column: auto; }
    body[data-page="teacher"] .classroom-point-list-head span:last-child { display: none; }
    body[data-page="teacher"] .classroom-point-row { grid-template-columns: 44px minmax(0, 1fr) 82px; gap: 7px; padding: 8px 9px; }
    body[data-page="teacher"] .modal-overlay { padding: 12px; }
    body[data-page="teacher"] .modal { padding: 20px; }
}

@media (prefers-reduced-motion: reduce) {
    body[data-page="teacher"] *, body[data-page="teacher"] *::before, body[data-page="teacher"] *::after { scroll-behavior: auto !important; transition: none !important; }
}