:root{color-scheme:dark;--bg:#111510;--panel:#1b2119;--line:#35412e;--accent:#d0eb8d}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:#eef3e7;font:16px/1.6 system-ui}main{max-width:960px;margin:auto;padding:28px 24px}a{color:var(--accent);text-decoration:none}header,footer,.account-bar{display:flex;justify-content:space-between;align-items:center;gap:20px}header{font-size:13px}.brand{font-size:26px;font-weight:800;color:#fff}.brand span{font-size:12px;letter-spacing:2px;margin-left:12px}.intro{padding:72px 0 32px}.eyebrow{font-size:11px;letter-spacing:2px;color:#b5c79c}h1{font-size:clamp(48px,8vw,80px);line-height:1.08;letter-spacing:-3px;margin:20px 0}h1 em{color:var(--accent);font-weight:400}p{color:#bfc8b9;max-width:650px}.login{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:30px;max-width:630px}h2{font-size:25px;margin:0 0 14px}.small{font-size:12px;max-width:480px}.contact{display:inline-block;margin-top:16px;font-size:14px}#status{color:var(--accent)}.account-bar{border-bottom:1px solid var(--line);padding:20px 0;margin-bottom:36px}.account-bar p{margin:3px 0}.secondary{background:transparent;color:var(--accent);border:1px solid var(--line);border-radius:8px;padding:12px 18px;cursor:pointer}button{font:inherit}.course{margin:0 0 44px}.course h2 span{display:block;font-size:13px;font-weight:400;color:#aab69f;margin-top:4px}.lesson-list{display:flex;flex-direction:column;gap:10px}.lesson{background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden}.lesson summary{display:flex;align-items:center;gap:22px;padding:23px 26px;cursor:pointer;list-style:none}.lesson summary::-webkit-details-marker{display:none}.lesson summary:hover{background:#273020}:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.number{font-size:30px;color:#a8c372;font-weight:300;min-width:42px}.lesson-name{display:flex;flex:1;flex-direction:column;gap:3px;font-size:19px;line-height:1.4}.expand{font-size:27px;color:var(--accent)}.lesson[open] .expand{transform:rotate(45deg)}.lesson[open] summary{border-bottom:1px solid var(--line)}.materials{padding:8px 26px 24px 90px}.materials a{display:flex;align-items:center;justify-content:space-between;gap:14px;border-radius:8px;padding:13px 16px;background:#252d20;color:#eef3e7;font-size:14px;margin:10px 0;overflow-wrap:anywhere}.materials a:after{content:'↗';color:var(--accent)}.materials a:hover{background:#34402c}.materials .folder{background:transparent;border:1px solid #46523a;color:var(--accent)}footer{border-top:1px solid var(--line);margin-top:70px;padding:25px 0;font-size:12px;color:#aab69f}[hidden]{display:none!important}@media(max-width:600px){main{padding:22px 16px}.intro{padding-top:45px}.login{padding:22px}.brand span{font-size:10px;margin-left:5px}header{font-size:11px}.lesson summary{gap:12px;padding:19px 16px}.number{font-size:24px;min-width:32px}.lesson-name{font-size:16px}.materials{padding:4px 16px 18px}.materials a{font-size:13px}h2{font-size:21px}footer{align-items:flex-start;flex-direction:column}.account-bar{align-items:flex-start}#identity{font-size:13px;overflow-wrap:anywhere}}
.notice{border:1px solid var(--line);border-radius:14px;background:var(--panel);padding:28px;margin:0 0 32px}.notice p{margin:12px 0}.request-controls{display:flex;gap:12px;margin:8px 0 20px}select{font:inherit;min-width:0;flex:1;background:#111510;color:#eef3e7;border:1px solid #59694a;border-radius:8px;padding:12px}label{display:block;font-size:14px;color:#c0cbb6}.primary{font:inherit;background:var(--accent);color:#172010;border:0;border-radius:8px;padding:12px 18px;font-weight:650;cursor:pointer}button:disabled,select:disabled{opacity:.55;cursor:default}.request-row,.admin-request{display:flex;justify-content:space-between;gap:16px;align-items:center;border-top:1px solid var(--line);padding:18px 0;overflow-wrap:anywhere}.badge{font-size:13px;color:var(--accent)}.admin-request p{font-size:14px;margin:3px 0}.admin-request>div{min-width:0}.request-actions{display:flex;gap:8px;flex-wrap:wrap}.panel-heading{display:flex;justify-content:space-between;align-items:center;gap:16px}.panel-heading h2{margin-bottom:0}.signed-in .intro{padding:30px 0 18px}.signed-in .intro h1{font-size:42px}.signed-in .intro>p{display:none}#requestStatus{color:var(--accent)}@media(max-width:600px){.notice{padding:20px}.request-controls,.admin-request,.request-row{flex-direction:column;align-items:stretch}.request-controls select{width:100%}.request-actions button{flex:1}.panel-heading{align-items:flex-start}.panel-heading h2{font-size:20px}}

.viewing-material{overflow:hidden}#materialViewer{width:min(1150px,96vw);height:94dvh;max-height:94dvh;max-width:100vw;padding:0;border:1px solid var(--line);border-radius:12px;background:#151a13;color:#eef3e7;overflow:hidden}#materialViewer::backdrop{background:#000c}#materialViewer[open]{display:flex;flex-direction:column}.viewer-bar{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:14px 18px;border-bottom:1px solid var(--line);flex-shrink:0}.viewer-bar h2{font-size:15px;line-height:1.35;margin:0;overflow-wrap:anywhere}.viewer-bar button{white-space:nowrap}#materialFrame{width:100%;flex:1;min-height:0;border:0;background:#fff}.viewer-help{font-size:12px;margin:0;padding:10px 18px;max-width:none;flex-shrink:0}@media(max-width:600px){#materialViewer{margin:auto 0;width:100vw;height:100dvh;max-height:100dvh;border-radius:0}.viewer-bar{padding:12px;gap:8px}.viewer-bar h2{font-size:13px}.viewer-bar button{padding:9px 11px;font-size:13px}}
.text-button{padding:8px 0;border:0;background:none;color:var(--accent);font-size:13px;cursor:pointer}#permissionsPanel{margin-top:22px;border-top:1px solid var(--line);padding-top:16px}#permissionSearch{width:100%;font:inherit;background:var(--bg);color:#eef3e7;border:1px solid var(--line);border-radius:8px;padding:10px;margin:8px 0}#permissionsPanel h3{margin:0}.admin-request>button{font-size:13px;white-space:nowrap}

.permission-group{margin-top:24px}.permission-group h4{margin:0;padding:12px 14px;border-radius:8px;background:#293321;color:var(--accent);font-size:15px}

.permission-group{overflow-x:auto}.permission-group .permission-row{display:grid;grid-template-columns:minmax(140px,1fr) minmax(180px,1.3fr) 230px;gap:12px;min-width:590px;align-items:center;padding:6px 8px;min-height:44px;white-space:nowrap;overflow-wrap:normal}.permission-identity{display:contents}.permission-name,.permission-email{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px;line-height:1.4}.permission-email{color:#bfc8b9}.permission-row .request-actions{flex-wrap:nowrap;justify-content:flex-end;gap:6px}.permission-row .request-actions button{flex:0 0 auto;padding:6px 9px;font-size:12px;line-height:1.5;min-height:32px}.permission-row .badge{font-size:11px}.permission-group h4{font-size:14px;padding:8px 12px}

.viewer-bar h2{flex:1;min-width:0}.viewer-download{font-size:12px;padding:7px 10px;white-space:nowrap;flex-shrink:0}#materialViewer{height:98dvh;max-height:98dvh;width:min(1440px,98vw)}.viewer-bar{padding:8px 12px;gap:8px}.viewer-help{padding:4px 12px;font-size:11px}.practice-controls,.cohort-fields{display:flex;flex-wrap:wrap;gap:12px;align-items:end}.practice-controls label,.cohort-fields label{flex:1;min-width:170px}.practice-controls select,.cohort-fields input,.cohort-fields select,#studentFullName,.practice-admin input{display:block;width:100%;background:var(--bg);border:1px solid var(--line);border-radius:8px;color:#eef3e7;font:inherit;padding:10px;margin:6px 0 12px}#practiceFiles{max-width:100%;margin:12px 0}#uploadProgress{width:100%;height:12px;margin-top:16px;accent-color:var(--accent)}.practice-admin{margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}.practice-admin summary{cursor:pointer;color:var(--accent);font-size:14px}.practice-admin form{margin:20px 0}.practice-admin code{overflow-wrap:anywhere}.cohort-row{padding:16px 0;border-top:1px solid var(--line)}.cohort-row .request-actions{margin-top:8px}.cohort-row button{padding:7px 10px;font-size:12px}.student-work{margin-top:24px}.student-work h3{font-size:16px}.practice-file{display:flex;flex-wrap:wrap;align-items:center;gap:14px;padding:12px 0;border-top:1px solid var(--line)}.practice-file>div{flex:1;min-width:140px;overflow-wrap:anywhere}.practice-file>div a{display:block}.practice-file img{width:120px;height:90px;object-fit:contain;background:#111}.practice-file video{width:100%;max-height:65vh}#practiceStatus{overflow-wrap:anywhere}@media(max-width:600px){#materialViewer{width:100vw;height:100dvh;max-height:100dvh}.viewer-bar h2{font-size:11px;max-height:3em;overflow:hidden}.viewer-bar button,.viewer-download{font-size:11px;padding:6px 8px}.viewer-bar{padding-top:max(8px,env(safe-area-inset-top))}.viewer-help{padding-bottom:max(4px,env(safe-area-inset-bottom))}}

.course{margin-bottom:18px}.course-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer;list-style:none;padding:18px;border:1px solid var(--line);border-radius:12px;background:var(--panel)}.course-heading::-webkit-details-marker{display:none}.course-heading h2{margin:0}.course-toggle:after{content:"+";font-size:26px;color:var(--accent)}.course[open]>.course-heading .course-toggle:after{content:"−"}.course>.lesson-list{margin-top:12px}.upload-success{border:1px solid var(--accent);border-radius:12px;padding:18px;margin:16px 0;background:#293b20}.upload-success p{color:#e4f6c4;font-weight:650;margin:0 0 12px}.upload-success button{background:var(--bg)}

.student-work{border:1px solid var(--line);border-radius:10px;padding:0 14px;margin-top:10px}.student-work>summary{cursor:pointer;padding:14px 0;font-weight:600;color:var(--accent)}

.viewing-photo{overflow:hidden}#photoViewer{width:98vw;max-width:1600px;height:98dvh;max-height:98dvh;padding:0;border:1px solid var(--line);border-radius:10px;background:#111;color:#eef3e7;overflow:hidden}#photoViewer::backdrop{background:#000e}#photoViewer[open]{display:flex;flex-direction:column}.photo-bar{padding:10px 16px;gap:12px;flex-shrink:0;align-items:flex-start}.photo-bar>div{min-width:0;flex:1;max-height:24dvh;overflow:auto}#photoFilename{margin:0;max-width:none;white-space:normal;overflow-wrap:anywhere;color:#fff;font-size:15px;line-height:1.4}.photo-bar button{flex-shrink:0;padding:8px 12px}.photo-stage{position:relative;flex:1;min-height:0;display:flex;align-items:center;justify-content:center;overflow:hidden}#photoImage{width:100%;height:100%;object-fit:contain}#photoError{position:absolute;padding:20px;background:#111e}.photo-navigation{display:flex;justify-content:space-between;gap:16px;padding:8px 16px;flex-shrink:0}.photo-navigation button{min-height:44px}@media(max-width:600px){#photoViewer{width:100vw;height:100dvh;max-height:100dvh;max-width:100vw;margin:0;border:0;border-radius:0}.photo-bar{padding-top:max(10px,env(safe-area-inset-top))}#photoFilename{font-size:13px}.photo-navigation{padding-bottom:max(8px,env(safe-area-inset-bottom))}}

.photo-originals{display:flex;gap:16px;flex-wrap:wrap;font-size:12px;margin-top:4px}.photo-originals a{cursor:pointer}

.practice-feedback{padding:16px;margin:12px 0;border:1px solid #414c32;border-radius:10px}.practice-feedback textarea{display:block;box-sizing:border-box;width:100%;resize:vertical;font:inherit;color:inherit;background:#10160e;border:1px solid #64734e;border-radius:8px;padding:12px;margin-top:8px}.practice-feedback form button{margin:8px 8px 0 0}.practice-feedback p{overflow-wrap:anywhere}

#classExamplesViewer{box-sizing:border-box;width:100vw;max-width:100vw;height:100dvh;max-height:100dvh;margin:0;padding:0;border:0;background:#080b07;color:#fff;overflow:hidden}#classExamplesViewer::backdrop{background:#080b07}#classExamplesViewer header,#classExamplesViewer nav{position:absolute;z-index:2;left:0;right:0;display:flex;align-items:center;justify-content:space-between;gap:12px;background:#10160ef0;padding:12px max(12px,env(safe-area-inset-right))}#classExamplesViewer header{top:0;padding-top:max(12px,env(safe-area-inset-top))}#classExamplesViewer header>div{min-width:0}#exampleName{overflow-wrap:anywhere;margin:4px 0}#classExamplesViewer nav{bottom:0;padding-bottom:max(12px,env(safe-area-inset-bottom))}#classExamplesViewer nav span{font-size:12px;text-align:center}#exampleStage{position:absolute;inset:125px 0 90px;display:flex;align-items:center;justify-content:center;touch-action:pan-y pinch-zoom}#exampleImage{width:100%;height:100%;object-fit:contain;user-select:none;-webkit-user-drag:none}#exampleStatus{position:absolute;padding:12px;text-align:center;pointer-events:none;background:#080b07b0}#exampleStatus:empty{display:none}#retryExample{position:absolute;bottom:10px}#classExamplesViewer.photo-only header,#classExamplesViewer.photo-only nav{visibility:hidden}#classExamplesViewer.photo-only #exampleStage{inset:0}.upload-detail{font-variant-numeric:tabular-nums}.upload-stalled{color:#ffd78a}@media(max-width:600px){#classExamplesViewer header{font-size:12px}#classExamplesViewer nav span{display:none}}

#exampleFoldersList{width:min(680px,90vw);max-height:100%;overflow:auto;padding:12px}#exampleFoldersList button{display:block;width:100%;text-align:left;margin:12px 0}#newCourseForm{border:1px solid var(--line);padding:16px;border-radius:12px}

#classExamplesViewer.browsing-examples nav{display:none}#classExamplesViewer.browsing-examples #exampleStage{inset:100px 0 12px;align-items:flex-start}#exampleFoldersList{width:100%;box-sizing:border-box}.example-thumbnails{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:14px}#exampleFoldersList .example-thumbnail{margin:0;padding:8px;background:#10160e;border:1px solid #414c32;border-radius:8px;color:inherit;cursor:pointer;min-width:0}.example-thumbnail img{display:block;width:100%;height:180px;object-fit:contain;background:#080b07}.example-thumbnail span{display:block;overflow-wrap:anywhere;font-size:13px;padding-top:8px}@media(max-width:600px){.example-thumbnails{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.example-thumbnail img{height:145px}#exampleFolders{font-size:11px;padding:6px}}

/* Accessible contrast for every native upload selector. */
input[type="file"]{max-width:100%;min-width:0;color:#e8eddf}
input[type="file"]::file-selector-button{background:#f5f6f0;color:#173a25;border:1px solid #b9c5ae;border-radius:6px;padding:10px 14px;font:600 14px system-ui;margin-right:10px;cursor:pointer}
input[type="file"]::-webkit-file-upload-button{background:#f5f6f0;color:#173a25;border:1px solid #b9c5ae;border-radius:6px;padding:10px 14px;font:600 14px system-ui;margin-right:10px;cursor:pointer}

.practice-delete{min-height:44px;white-space:normal;max-width:100%;margin:8px 0;touch-action:manipulation}