/* TeachTally: Chem Hub colour, calm surfaces and native interactions. */
:root{--teal:#55b8b0;--red:#e63946;--deep:#154c47;--ink:#142120;--muted:#243330;--soft:#f1f8f7;--line:#b4c4c3;--grid-line:#e1e9e8;--paper:#fff}
html{background:var(--teal);scroll-behavior:auto;scrollbar-gutter:stable;scroll-padding-top:84px}
body,.app-active,.app-active .workspace{background:var(--teal);color:var(--ink)}
body.page-locked{position:fixed;top:var(--locked-top);left:0;right:0;overflow:hidden}
h1,h2,h3,h4{font-weight:700;letter-spacing:-.025em;color:var(--ink)}
h1{font-size:clamp(28px,2.6vw,38px);line-height:1.2}h2{line-height:1.3}
.muted,.small.muted,.tiny.muted{color:var(--muted)}
.eyebrow,.panel-label{font-size:10px;font-weight:700;letter-spacing:.09em;color:var(--muted)}
.app-active .workspace{padding:30px 32px 24px}
.workspace .card,.classes-section{background:#fff;border:1px solid #a8bdb8!important;border-radius:16px;box-shadow:2px 3px 0 #174d4724,0 5px 14px #173e3912}
.workspace .page-heading{background:transparent!important;border:0!important;box-shadow:none!important;padding:0;margin:0 0 26px}
.page-heading .eyebrow,.page-heading p,.dashboard-date,.workspace-footer{color:#102b28}
.page-heading h1,.dashboard-heading h1{color:#112f2d}
.dashboard-heading{margin-bottom:24px}.dashboard-heading h1{font-size:28px;letter-spacing:-.025em}
.page-heading p{font-size:15px;max-width:70ch;line-height:1.6}
.sidebar{background:#fff;border-right:1px solid #dce6e4;padding:30px 16px 22px;box-shadow:none}
.sidebar-brand,.brand{font-weight:700;letter-spacing:-.035em;color:var(--deep)}
.sidebar-brand{padding-bottom:30px;font-size:22px}.sidebar-brand small{font-size:8px;letter-spacing:.09em;color:var(--muted)}
.nav-item{font-size:14px;font-weight:700;border-radius:9px;color:#172b28;padding:12px 14px;min-height:46px}
.nav-item[aria-current=page]{background:#e6f4f2;color:#154c47;box-shadow:inset 3px 0 #55b8b0}
.nav-item:hover,.sidebar-class:hover,.account-button:hover{background:#f1f7f6}
.sidebar-class{color:#172b28;font-size:12px;border-radius:8px}.sidebar-class.active{background:#e6f4f2;color:#154c47}
.sidebar-class .class-dot{width:8px;height:8px}
.sidebar-date,.sidebar .header-actions{border-color:#e1e9e8}.sidebar-date label,.sidebar-class-heading,.sidebar-private{color:var(--muted)}
.sidebar-date input{border:1px solid #8b9e9c;color:#263f3c;background:#fff}
.sidebar-bottom{padding-top:24px}.account-button{color:#294d48}
.app-active .topbar{background:#fff;border-bottom:1px solid #dce6e4}
.app-active .example-banner{background:#154c47;color:#fff;font-size:11px}.example-banner button{color:#fff}
.workspace .week-calendar{border:1px solid #a8bdb8!important;box-shadow:2px 3px 0 #174d4724,0 5px 14px #173e3912!important;border-radius:16px!important}
.calendar-header{background:#fff;border-bottom:0;padding:22px 24px 16px;gap:14px}
.calendar-header h2{font-size:22px;color:#172326;letter-spacing:-.025em}.calendar-header p{color:var(--muted);font-size:12px}
.calendar-subbar{background:#fff;padding:0 24px 18px;color:var(--muted);gap:16px}
.calendar-subbar select{border:1px solid #8b9e9c;background:#fff;color:#344c49;min-height:38px;font-size:12px}
.calendar-timezone,#calendar-hint{color:var(--muted);font-size:11px}
.calendar-scroll{height:auto;max-height:none;min-height:0;background:#fff;overscroll-behavior:auto;overscroll-behavior-x:contain;overflow-x:auto;overflow-y:hidden;border-color:#e1e9e8}
.calendar-scroll.empty-timetable{min-height:300px}
.tt-week-label{background:#edf7f5;color:#154c47;border-bottom:1px solid #dce6e4;font-size:12px;font-weight:700}
.teaching-grid{background:#fff}
.tt-corner,.tt-day{background:#fafcfb;border-color:#e1e9e8;color:#3e5053}.tt-day span{color:#3e5053;font-size:11px}.tt-day b{color:#253d39;font-size:14px}
.tt-day.is-today{background:#e1f2ef;box-shadow:inset 0 -3px #55b8b0}.tt-day.is-today b{color:#154c47}
.tt-day:hover{background:#eaf5f3}
.tt-period{background:#fafcfb;border-color:#e1e9e8;color:#3e5053;font-weight:700}
.tt-cell{background:#fff;border-color:#e1e9e8}.tt-free,.tt-cell.outside{background:#fff;color:#455854}
.tt-period.break,.tt-break{background:#f4f7f6;color:#3e5053;border-color:#e1e9e8}
.tt-lesson{background:color-mix(in srgb,var(--class-colour) 45%,white);color:#111;border:1px solid color-mix(in srgb,var(--class-colour) 70%,white);border-left:3px solid var(--class-colour);box-shadow:0 2px 3px #173e3924;border-radius:9px;padding:9px 10px;gap:5px}
.tt-lesson strong,.tt-lesson>span,.tt-lesson small,.tt-lesson.has-plan>span{color:#111}
.tt-lesson:hover{background:color-mix(in srgb,var(--class-colour) 48%,white);box-shadow:0 2px 7px #173e391a}
.tt-lesson strong{font-size:12px;font-weight:700}.tt-lesson>span{font-size:11px}
.calendar-footer{background:#fff;border:0;padding:13px 24px;color:var(--muted)}
.timetable-empty h2{font-size:26px;color:#172326}.timetable-empty .empty-icon{color:#22736a}.timetable-empty p{color:var(--muted)}
.timetable-outside{background:#fff5dd;color:#684b16}
.button,.button.subtle,.icon-button,.calendar-controls .button,.calendar-controls .icon-button{background:#fff;color:#29433e;border:1px solid #829c97;border-radius:9px;font-weight:700;box-shadow:none}
.button{min-height:44px;font-size:13px;padding:10px 16px}
.button:hover:not(:disabled),.button.subtle:hover,.icon-button:hover{background:#f0f7f5;transform:none}
.button.primary,.floating-add{background:#55b8b0;border-color:#247b72;color:#102e29}
.button.primary:hover:not(:disabled),.floating-add:hover{background:#43aca2;color:#102e29}
.button.red{background:#e63946;color:#111;border-color:#b51b31}.button.red:hover:not(:disabled){background:#ef4c58;color:#111}
.button.danger,.text-button.danger,.danger{color:#a01427}.class-actions .danger{border-color:#b96d77;background:#fff}
#complete-lesson{background:#fff;color:#154c47;border-color:#829c97}#complete-lesson:hover{background:#edf7f5}
.text-button{color:#226c62}
.floating-add{border-radius:12px;min-height:48px;padding:12px 18px;box-shadow:0 4px 14px #173e3926;font-size:13px}
.calendar-controls .icon-button{min-width:40px;width:40px;height:40px}
.calendar-views,.segmented,.builder-tabs{background:#f1f5f4;border:1px solid #d2dfdc;padding:3px;border-radius:10px}
.calendar-views button,.segmented button,.builder-tabs button{background:transparent;color:#3e5053;border-radius:7px}
.calendar-views button[aria-pressed=true],.segmented button[aria-pressed=true],.builder-tabs button[aria-pressed=true]{background:#fff;color:#154c47;box-shadow:0 1px 4px #1e4c3c24}
input,select,textarea{background:#fff;color:#172326;border:1px solid #8b9e9c;border-radius:9px;scroll-margin-block:90px}
input::placeholder,textarea::placeholder{color:#4d605b;opacity:1}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #176f64;outline-offset:3px}
.button:disabled,.icon-button:disabled,.period-actions button:disabled{opacity:1;background:#eef2f1;color:#667671;border-color:#cbd7d4}
.pill{background:#f0f6f4;border:1px solid #becfc9;color:#35554a;font-size:10px;font-weight:700}
.pill.planned{background:#fff5dd;color:#73561d;border-color:#dbcba5}.pill.completed{background:#e7f5ee;color:#24644b;border-color:#a3c8b5}
.count-badge,.year-badge,.lesson-row-year{background:#e7f4f1;color:#23695f}
.class-card,.class-card:last-child{background:#fff;border:1px solid #a8bdb8;border-radius:12px;box-shadow:1px 2px 0 #174d4724,0 3px 8px #173e390d}
.class-card[data-colour]{border-top:3px solid var(--event-accent)}
.class-card:hover{background:#fafdfc;border-color:#85aaa2;transform:none;box-shadow:0 3px 10px #173e3910}
.class-card:nth-child(n) .year-badge{background:#eef6f4;color:#346258;border-radius:5px;font-weight:700}
.class-card h3,.class-card:last-child h3{font-weight:700;letter-spacing:-.02em}.class-meta,.class-card .subject{color:#3e5053}
.class-card:after{color:#67827b}.class-meta b{color:#294d44}
.reflection-card,.reflection-card.card{background:#fff}.reflection-icon,.mic-symbol,.attachment-icon{background:#e7f4f1;color:#23695f}
.reflection-card .quick-class-button{background:#fff;border:1px solid #a3b8b2;color:#294d44;border-radius:9px}
.reflection-card .quick-class-button:hover{background:#f1f8f6}
.lesson-tile,.lesson-row{background:#fff;color:#172326;border-color:#dce6e4}.lesson-tile{border-width:1px;border-radius:12px}
.lesson-tile:hover,.lesson-row:hover{background:#f6faf8}.lesson-tile p,.lesson-tile-date,.lesson-row-detail{color:#3e5053}
.lesson-details>input{font-size:18px;font-weight:400}.lesson-fields{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px 24px}
.lesson-fields label{font-size:12px}.lesson-fields>div:first-child{grid-column:auto}
.editor-columns textarea{min-height:240px;max-height:60svh}.editor-columns h2{font-size:22px}
.record-meta{background:#fff;gap:24px;padding:24px}.record-meta b{color:#3e5053;letter-spacing:.02em}
.record-prose{color:#243b36;font-size:15px;line-height:1.85}.record-columns h2{font-size:22px}
.record-worksheets,.attachment-row,.pending-file{border-color:#e1e9e8}.attachment-row{color:#294d44}.attachment-row small,.pending-file small{color:#3e5053}.download-label{color:#226c62;font-weight:700}
.lesson-reminder{background:#fff3f4;color:#172326;border:1px solid #e5bac0;border-left:4px solid #e63946;border-radius:12px}
.lesson-reminder p{color:#172326}.lesson-reminder small{color:#71434a}.reminder-tag{color:#a01427}
.reminder-done{background:#fff;color:#842837;border:1px solid #b96d77!important}.reminder-done:hover{background:#ffe7ea}
.workspace .reminder-list-card{border-left:4px solid #e63946!important}.workspace .reminder-list-card.is-completed{border-left-color:#69a389!important;background:#fbfdfc}
.reminder-list-date,.reminder-list-card small{color:#3e5053}.reminder-destination{background:#edf7f5;color:#294d44}
.reminder-picker-slot{background:#f6faf8;border-color:#a3b8b2;color:#294d44}.reminder-picker-slot.selected{background:#d8eeea;outline-color:#176f64}
.dialog,dialog{background:#fff;color:#172326;border:1px solid #c5d6d1;border-radius:18px;box-shadow:0 20px 70px #173e3933;overscroll-behavior-y:contain;scroll-padding-block:24px;max-height:calc(100dvh - 32px)}
dialog h2{font-size:24px}dialog::backdrop{background:#123e3b73;backdrop-filter:none}
.timetable-dialog>.modal-header,.builder-footer,.observation-dialog .modal-footer{position:static;background:#fff;margin-bottom:0}
.timetable-dialog>.modal-header{padding-top:0;margin-bottom:22px}.builder-footer{padding-bottom:0;border-color:#e1e9e8}.builder-footer p{color:#3e5053}
.timetable-settings{border-color:#e1e9e8}.builder-class-tools{background:#f1f8f6;border:1px solid #d2e3dd}
.builder-grid,.reminder-picker-grid{max-height:none;overscroll-behavior-y:auto;overscroll-behavior-x:contain}
.builder-grid{border-color:#d5e2dd}.builder-head{position:static}.builder-head,.builder-head b,.builder-head>span{background:#f1f8f6;color:#355c50}
.builder-row,.builder-period{background:#fff;border-color:#e1e9e8}.builder-row.break,.builder-row.break .builder-period,.builder-row.break .builder-period input,.builder-break{background:#f4f7f6;color:#3e5053}
.builder-period input{background:#fff;color:#294d44}.drag-grip{color:#3e5053}.period-actions button{background:#fff;color:#355c50;border-color:#a3b8b2}
.builder-slot{background:#fafcfb;color:#3e5053;border-color:#d5e2dd;border-radius:9px}
.builder-slot.assigned{background:color-mix(in srgb,var(--class-colour) 45%,white);color:#111;border-color:var(--class-colour);border-top-width:3px}
.builder-row.drop-target{background:#e7f4f1;outline-color:#176f64}.builder-instruction{color:#3e5053}
.save-bar{position:relative;bottom:auto;margin-top:24px;background:#fff;color:#172326;border:1px solid #dce6e4;border-radius:12px;box-shadow:none;padding:18px 20px}.save-bar p{color:#3e5053}
.observation-note{background:#fff;border-color:#e1e9e8}.observation-note-head,.observation-columns h3{color:#355c50}.observation-columns p{color:#243b36}
.notice{background:#edf7f5;color:#294d44;border-color:#a3b8b2}.error-text,.notice.error{background:#fff3f4;color:#a01427;border-color:#c78893}
.toast{background:#154c47;color:#fff;border:1px solid #fff;border-radius:12px;box-shadow:0 6px 20px #173e3926}.toast.error{background:#a01427;color:#fff}
.button,.icon-button,.nav-item,.sidebar-class,.tt-lesson,.builder-slot,.class-card{transition:background-color 160ms ease,border-color 160ms ease,box-shadow 160ms ease,transform 160ms ease}
.button:active:not(:disabled),.icon-button:active:not(:disabled){transform:scale(.98);transition-duration:70ms}.tt-lesson:active,.builder-slot:active{box-shadow:inset 0 0 0 2px #176f64}
@media(prefers-reduced-motion:no-preference){dialog[open]{animation:dialog-arrive 160ms ease-out}.sidebar{transition:transform 220ms cubic-bezier(.2,.8,.2,1),visibility 220ms}}
@keyframes dialog-arrive{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:1100px){.app-active .workspace{padding:24px 22px 24px}.calendar-header{padding:20px 20px 16px}.calendar-subbar{padding:0 20px 16px}.calendar-header h2{font-size:20px}.lesson-fields{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:850px){.app-active .workspace{padding:22px 18px 24px}.sidebar{height:100dvh}.record-actions,.record-actions>div,.save-bar,.save-buttons{flex-wrap:wrap}.sidebar-open .sidebar-shade{background:#123e3b73}}
@media(max-width:600px){.app-active .workspace{padding:20px 14px 24px}.dashboard-heading h1{font-size:25px}.page-heading h1{font-size:28px}.calendar-header{padding:18px 16px 14px}.calendar-subbar{padding:0 16px 14px}.calendar-header h2{font-size:20px}.calendar-controls .icon-button{min-width:40px;height:42px}.calendar-header .button{min-height:42px}.calendar-timezone,#calendar-hint{font-size:10px}.calendar-footer{padding:12px 16px}.lesson-fields{grid-template-columns:1fr;gap:16px}.lesson-fields input,.lesson-fields select{font-size:16px}.lesson-details>input{font-size:16px}.save-buttons{width:100%;margin:0;display:grid;grid-template-columns:1fr 1fr}.save-buttons #complete-lesson{grid-column:1/-1}.modal-footer{flex-wrap:wrap}.modal-footer>span{flex-basis:100%}dialog,.timetable-dialog{max-height:calc(100dvh - 24px);padding:20px 16px}.builder-period{grid-template-columns:32px minmax(0,1fr)}.period-actions button{min-width:40px;min-height:40px}.builder-head,.builder-row{grid-template-columns:205px repeat(5,minmax(110px,1fr))}.record-meta{gap:16px}.reminder-list-card{gap:16px}.floating-add{bottom:calc(18px + env(safe-area-inset-bottom));right:18px}.class-card h3,.class-card:last-child h3{font-size:17px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.button:active:not(:disabled),.icon-button:active:not(:disabled){transform:none}}
@media(prefers-contrast:more){.workspace .card,.class-card,.tt-cell,.tt-day{border-color:#627c75!important}.button,.icon-button,input,select,textarea{border-color:#355c50}}
@media print{html,body,.app-active,.app-active .workspace{background:#fff}body.page-locked{position:static}.save-bar{display:none}.workspace .card{box-shadow:none}}
@media(min-width:851px) and (max-width:1100px){.sidebar{padding-left:12px;padding-right:12px}.sidebar-brand{font-size:20px;gap:10px;padding-left:7px;padding-right:0}.sidebar-brand small{font-size:7px}}
input,select,textarea,.sidebar-date input,.calendar-subbar select{border-color:#7a8d89}

/* Notes remain easy to reach with pointer, touch and keyboard. */
.observation-note-head .text-button{min-height:44px;flex-shrink:0}
.record-actions>div{flex-wrap:wrap}
#observation-dialog .modal-footer{flex-wrap:wrap;gap:12px}

/* Purposeful action feedback. No change to layout or scrolling. */
.button,.text-button{transition:transform 120ms ease-out,background-color 160ms ease-out,box-shadow 160ms ease-out;touch-action:manipulation}
.button:not(:disabled):active,.text-button:not(:disabled):active{transform:scale(.98)}
@media(hover:hover){.button:not(:disabled):hover{box-shadow:0 2px 6px #154c471a}}
[aria-busy="true"]::before{content:"";display:inline-block;width:1em;height:1em;box-sizing:border-box;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;vertical-align:-.12em;margin-right:.55em;animation:feedback-spin .8s linear infinite}
.feedback-tick{width:24px;height:24px;flex-shrink:0;vertical-align:middle;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.feedback-tick circle{fill:#55b8b029;stroke:#55b8b0}
.feedback-tick path{stroke:#154c47;stroke-dasharray:18;stroke-dashoffset:0;animation:feedback-draw 280ms ease-out}
#toast.success-feedback{display:flex;align-items:center;gap:10px;background:#fff;color:#154c47;border:1px solid #55b8b0}
#toast[hidden]{display:none}
.file-saved{display:flex;align-items:center;gap:5px;font-size:.75rem;color:#154c47;margin-bottom:3px}
.file-saved .feedback-tick{width:18px;height:18px}
.file-saved .feedback-tick path{animation:none}
@keyframes feedback-spin{to{transform:rotate(360deg)}}
@keyframes feedback-draw{from{stroke-dashoffset:18}to{stroke-dashoffset:0}}
@media(prefers-reduced-motion:reduce){.button,.text-button{transition:none}.button:not(:disabled):active,.text-button:not(:disabled):active{transform:none}[aria-busy="true"]::before,.feedback-tick path{animation:none}}

/* Review fixes: predictable scrolling, legible controls and responsive content. */
html{scroll-padding-top:20px}
.workspace,.record-view,.card,.record-columns>*,.editor-columns>*,.section-heading>div,.observation-note-head>span{min-width:0}
.observation-note-head{gap:16px;flex-wrap:wrap}
.observation-note p{white-space:pre-wrap;overflow-wrap:anywhere}
.lesson-tile-main,.lesson-row-main{min-width:0}
.lesson-tile h3,.lesson-row-title,.page-heading h1{overflow-wrap:anywhere}
#observation-dialog .modal-footer>span{flex:1 1 180px}
#observation-dialog .modal-footer>.button{flex:0 0 auto}
.record-meta{grid-template-columns:repeat(auto-fit,minmax(120px,1fr))}
button:disabled{cursor:default}
dialog{overflow-y:auto;overflow-x:hidden;scrollbar-gutter:stable;touch-action:pan-x pan-y}
dialog .toast{position:sticky;bottom:0;left:auto;transform:none;max-width:100%;margin-top:16px}
.builder-grid,.reminder-picker-grid{overflow-x:auto;overflow-y:hidden;touch-action:pan-x pan-y}
.period-actions button,.drag-grip{min-width:36px;min-height:36px}
.builder-period{grid-template-columns:36px minmax(0,1fr)}
.calendar-header #edit-timetable{border-color:#829c97}
@media(min-width:851px){.teaching-grid{min-width:0;grid-template-columns:80px repeat(var(--tt-days,5),minmax(0,1fr))}.sidebar{overscroll-behavior-y:contain}}
@media(max-width:850px){html{scroll-padding-top:82px}input,select,textarea,.timetable-settings input,.timetable-settings select,.builder-class-tools select,.builder-period input{font-size:16px!important}.period-actions button,.drag-grip{min-width:44px;min-height:44px}.record-actions>div{gap:8px}.record-actions .button{min-height:44px}.reminder-picker-day>b{white-space:normal}.toast{max-width:calc(100vw - 32px)}}
@media(max-width:600px){.record-actions>div{display:grid;grid-template-columns:1fr 1fr;width:100%}.record-actions #edit-lesson{grid-column:1/-1}.record-columns>.card{padding:22px 18px}.worksheet-editor>.section-heading{flex-wrap:wrap}.worksheet-editor .section-heading>div{flex-basis:100%}.record-meta{grid-template-columns:1fr 1fr}.section-heading h2{overflow-wrap:anywhere}.observation-note-head{align-items:flex-start}.observation-note-head .text-button{padding:8px 0}.record-toolbar .tiny{margin-left:0}.modal-footer{padding-bottom:env(safe-area-inset-bottom)}.timetable-settings{grid-template-columns:1fr}.timetable-settings>div{width:100%}}

/* Use the existing deep teal for actions against the teal page background. */
.record-actions .button.primary,.button.primary.floating-add{background:var(--deep);border-color:var(--deep);color:#fff}
.record-actions .button.primary:hover:not(:disabled),.button.primary.floating-add:hover:not(:disabled){background:#103d39;color:#fff}
@media(max-width:850px){.builder-period{grid-template-columns:44px minmax(0,1fr)}}


.class-title-row{display:flex;align-items:center;gap:12px;min-width:0}.class-title-row h1{min-width:0}.rename-class{flex:none;width:36px;min-width:36px;height:36px;background:#fff}.rename-class svg{pointer-events:none}

/* One viewport shell, with the navigation outside the content scroller. */
body:not(.app-active)>.sidebar,body:has(#workspace[hidden])>.sidebar{display:none}
@media screen and (min-width:851px){
  html:has(body.app-active){height:100%;min-height:0;overflow:hidden;overscroll-behavior:none;scrollbar-gutter:auto}
  body.app-active,body.app-active.page-locked{position:fixed;inset:0;margin:0;width:100%;height:100vh;height:100dvh;min-height:0;overflow:hidden;padding-bottom:0;display:flex;flex-direction:column;overscroll-behavior:none}
  .app-active #example-banner{flex:none}
  .app-active #main{flex:1 1 0;min-height:0;min-width:0;margin-left:var(--sidebar);width:calc(100% - var(--sidebar));overflow-y:auto;overflow-x:hidden;overscroll-behavior:none;scrollbar-gutter:stable;scroll-padding-top:20px;overflow-anchor:none}
  .app-active .workspace{margin:0;min-height:0;display:flow-root;padding-bottom:max(24px,env(safe-area-inset-bottom))}
  .app-active.page-locked #main{overflow:hidden}
  .app-active>.sidebar{position:absolute;inset:0 auto 0 0;height:100%;max-height:100%;background:#fff;transform:none;transition:none;overflow:hidden;overscroll-behavior:none;isolation:isolate;padding-bottom:max(22px,env(safe-area-inset-bottom))}
  .sidebar-brand,.sidebar>.primary-nav,.sidebar-date,.sidebar-class-heading,.sidebar-bottom{flex-shrink:0}
  .sidebar-classes{min-height:0;overflow-y:auto;overscroll-behavior:none;flex:0 1 auto}
  .sidebar-bottom{padding-top:18px}
}

/* Legible secondary text and a restrained Chem Hub card shadow. */
.lesson-tile{box-shadow:1px 2px 0 #174d4724,0 4px 10px #173e3912;border-color:#a8bdb8}
.record-prose,.observation-columns p{color:#1c302c}
.class-card .subject,.lesson-row-detail,.attachment-row small,.pending-file small,.reminder-list-date{font-size:12px;color:var(--muted)}
.attachment-item{display:flex;align-items:center;gap:16px;border-bottom:1px solid #c6d5d0;min-width:0}
.attachment-item:last-child{border-bottom:0}
.attachment-item .attachment-row{flex:1;min-width:0;border:0}
.attachment-delete{flex:none;min-height:44px;background:#fff;border-color:#b96d77}
.attachment-delete:hover:not(:disabled){background:#fff0f1}
.download-label{font-size:12px}
.workspace-footer{color:#173e39;font-size:12px}
@media(max-width:600px){.attachment-item{flex-wrap:wrap;gap:0 12px;padding-bottom:10px}.attachment-item .attachment-row{flex-basis:100%}.attachment-delete{margin-left:46px}}
@media print{.workspace .card,.workspace .week-calendar,.class-card,.lesson-tile,.tt-lesson{box-shadow:none!important}.attachment-delete{display:none}}

/* Keep long lesson content in normal flow and leave room below its last note. */
#record-view,#lesson-form{height:auto;max-height:none;overflow:visible}
.record-columns{align-items:start}
.record-meta b,.sidebar-date label,.sidebar-class-heading,.sidebar-private{color:#243330}
.page-heading p,.page-heading .eyebrow,.dashboard-date{color:#102b28;font-weight:600}
.nav-item,.sidebar-class{color:#172b28}
.tt-day,.tt-day span,.tt-period,.tt-free,.tt-break,.calendar-subbar,.calendar-timezone,#calendar-hint,.reminder-list-date{color:#243330}
@media(min-width:851px){.app-active #main{touch-action:pan-x pan-y pinch-zoom;-webkit-overflow-scrolling:touch}.app-active .workspace{padding-bottom:calc(48px + env(safe-area-inset-bottom))}}

/* Chem Hub visual language: ink outlines, paper cards and purposeful accents.
   These rules change presentation only; the viewport shell stays above. */
:root{--ink:#111;--muted:#333;--paper:#fff;--soft:#e8f6f4;--line:#111;--panel-line:#b6c5c2;--brand-edge:#111;--brand-shadow:3px 3px 0 #1113;color-scheme:light}
body,input,select,textarea{color:var(--ink)}
h1,h2,h3,h4,.sidebar-brand,.brand,.page-heading h1,.dashboard-heading h1,.calendar-header h2{color:var(--ink);font-weight:700}
.page-heading p,.page-heading .eyebrow,.dashboard-date,.workspace-footer{color:var(--ink)}
.muted,.small.muted,.tiny.muted,.eyebrow,.panel-label{color:var(--muted)}
.eyebrow,.panel-label{font-size:11px}
.workspace .card,.classes-section,.workspace .week-calendar{border:2px solid var(--brand-edge)!important;box-shadow:var(--brand-shadow)!important;border-radius:18px}
.workspace .page-heading{border:0!important;box-shadow:none!important}
.class-card,.class-card:last-child,.lesson-tile{border:2px solid var(--brand-edge);box-shadow:2px 2px 0 #1113;border-radius:14px}
.class-card[data-colour]{border-top:5px solid var(--event-accent)}
.class-card h3,.class-meta b,.class-meta,.class-card .subject,.class-card:after,.lesson-row-title,.lesson-row-detail,.lesson-tile p,.lesson-tile-date{color:var(--ink)}
.class-card:nth-child(n) .year-badge,.count-badge,.lesson-row-year{background:var(--teal);color:var(--ink);border:1.5px solid var(--ink);font-weight:700}
.sidebar{border-right:2px solid var(--ink)}
.sidebar-brand img{border:2px solid var(--ink)}
.nav-item,.sidebar-class,.account-button{color:var(--ink)}
.nav-item{border:2px solid transparent}
.nav-item[aria-current=page]{background:var(--teal);color:var(--ink);border-color:var(--ink);box-shadow:2px 2px 0 #1113}
.sidebar-class{border:1.5px solid transparent}
.sidebar-class.active{background:var(--soft);color:var(--ink);border-color:var(--ink);box-shadow:inset 4px 0 var(--teal)}
.sidebar-date label,.sidebar-class-heading,.sidebar-private,.sidebar-brand small{color:var(--muted)}
.sidebar-date input,input,select,textarea,.calendar-subbar select{border:2px solid var(--ink);color:var(--ink);background:#fff;border-radius:10px}
input::placeholder,textarea::placeholder{color:#454545;opacity:1}
.button,.button.subtle,.icon-button,.calendar-controls .button,.calendar-controls .icon-button{border:2px solid var(--ink);color:var(--ink);background:#fff;border-radius:10px;box-shadow:1px 2px 0 #1112}
.button.primary,.button.red,.record-actions .button.primary{background:var(--red);border-color:var(--ink);color:var(--ink)}
#complete-lesson{background:var(--teal);color:var(--ink);border-color:var(--ink)}
.button.danger,.class-actions .danger,.attachment-delete{background:#fff;color:#a01425;border-color:#a01425}
.text-button{color:var(--ink);text-decoration-thickness:1.5px}
.text-button.danger{color:#a01425}
.calendar-views,.segmented,.builder-tabs{background:#fff;border:2px solid var(--ink);border-radius:12px;gap:4px}
.calendar-views button,.segmented button,.builder-tabs button{color:var(--ink);border:2px solid transparent;font-weight:700}
.calendar-views button[aria-pressed=true],.segmented button[aria-pressed=true],.builder-tabs button[aria-pressed=true]{background:var(--teal);color:var(--ink);border-color:var(--ink);box-shadow:none}
.calendar-subbar,.calendar-timezone,#calendar-hint,.calendar-footer,.calendar-legend{color:var(--muted)}
.tt-week-label{background:var(--teal);color:var(--ink);border-top:2px solid var(--ink);border-bottom:2px solid var(--ink)}
.tt-corner,.tt-day,.tt-period{background:#fff;color:var(--ink)}
.tt-day b,.tt-day span,.tt-period,.tt-period.break,.tt-break,.tt-free{color:var(--ink)}
.tt-day.is-today{background:var(--teal);box-shadow:inset 0 -3px var(--ink)}
.tt-day.is-today b{color:var(--ink)}
.tt-period.break,.tt-break{background:var(--soft)}
.tt-cell,.tt-period,.tt-day,.tt-corner{border-color:#b6c5c2}
.tt-lesson{border:1.5px solid var(--ink);border-left:5px solid var(--class-colour);background:color-mix(in srgb,var(--class-colour) 38%,white);color:var(--ink);box-shadow:1px 2px 0 #1113}
.tt-lesson strong,.tt-lesson>span,.tt-lesson small{color:var(--ink)}
.tt-lesson.has-plan>span{font-weight:700}
.pill{background:var(--soft);border:1.5px solid var(--ink);color:var(--ink);font-size:11px}
.pill.planned{background:#fff1ce;border-color:#74500c;color:#513600}
.pill.completed{background:var(--teal);border-color:var(--ink);color:var(--ink)}
.reflection-icon,.mic-symbol,.attachment-icon{background:var(--teal);color:var(--ink);border:1.5px solid var(--ink)}
.reflection-card .quick-class-button{color:var(--ink);border:2px solid var(--ink);background:#fff}
.record-meta b,.record-meta>span,.record-prose,.observation-note-head,.observation-columns h3,.observation-columns p{color:var(--ink)}
.record-meta b{font-size:12px}
.attachment-row,.attachment-row small,.pending-file small,.download-label,.reminder-list-date,.reminder-list-card small{color:var(--muted)}
.download-label{color:var(--ink)}
.lesson-reminder{background:#fff0f1;border:2px solid #a01425;border-left:6px solid var(--red);color:var(--ink)}
.lesson-reminder p{color:var(--ink)}
.lesson-reminder small,.reminder-tag{color:#851526}
.reminder-done{border:2px solid #a01425!important;color:#851526;background:#fff}
.workspace .reminder-list-card{border-left:6px solid var(--red)!important}
.workspace .reminder-list-card.is-completed{border-left:6px solid var(--teal)!important;background:#fff}
.reminder-destination,.builder-class-tools{background:var(--soft);border:2px solid var(--ink);color:var(--ink)}
.reminder-picker-slot,.builder-slot,.period-actions button{border:1.5px solid var(--ink);background:#fff;color:var(--ink)}
.reminder-picker-slot.selected{background:var(--teal);outline:2px solid var(--ink)}
.builder-slot.assigned{border-color:var(--ink);border-top:4px solid var(--class-colour);color:var(--ink)}
.builder-head,.builder-head b,.builder-head>span{background:var(--teal);color:var(--ink)}
.builder-period input,.drag-grip,.builder-instruction,.builder-footer p{color:var(--ink)}
.builder-row.break,.builder-row.break .builder-period,.builder-row.break .builder-period input,.builder-break{background:var(--soft);color:var(--ink)}
.save-bar{border:2px solid var(--ink);box-shadow:var(--brand-shadow)}
.save-bar p{color:var(--muted)}
.observation-note{border-color:#b6c5c2}
.notice{background:var(--soft);border:2px solid var(--ink);border-left:6px solid var(--teal);color:var(--ink)}
.notice.error,.error-text{background:#fff0f1;color:#851526;border-color:#a01425}
.dialog,dialog,.auth-card{border:3px solid var(--ink);box-shadow:5px 5px 0 #1115;color:var(--ink)}
dialog::backdrop{background:#1118}
.toast,#toast.success-feedback{background:#fff;color:var(--ink);border:2px solid var(--ink);box-shadow:3px 3px 0 #1114}
.toast.error{background:#fff0f1;color:#851526;border-color:#a01425}
#toast.success-feedback .feedback-tick circle{fill:var(--teal);stroke:var(--ink)}
.feedback-tick path{stroke:var(--ink)}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--ink);outline-offset:4px;box-shadow:0 0 0 3px #fff}
.button:disabled,.icon-button:disabled,.period-actions button:disabled{background:#eee;color:#555;border-color:#777;box-shadow:none}
@media(hover:hover){
 .button:hover:not(:disabled),.button.subtle:hover:not(:disabled),.icon-button:hover:not(:disabled),.reflection-card .quick-class-button:hover{background:var(--soft);color:var(--ink);box-shadow:3px 3px 0 #111;transform:translateY(-1px)}
 .button.primary:hover:not(:disabled),.button.red:hover:not(:disabled),.record-actions .button.primary:hover:not(:disabled){background:#ee4955;color:var(--ink)}
 #complete-lesson:hover:not(:disabled){background:#64c4bc;color:var(--ink)}
 .button.danger:hover:not(:disabled),.attachment-delete:hover:not(:disabled){background:#fff0f1;color:#851526}
 .class-card:hover,.lesson-tile:hover{background:#fff;box-shadow:4px 4px 0 #111;border-color:var(--ink)}
 .lesson-row:hover,.nav-item:hover,.sidebar-class:hover,.account-button:hover{background:var(--soft);color:var(--ink)}
 .nav-item[aria-current=page]:hover{background:var(--teal)}
 .tt-lesson:hover{background:color-mix(in srgb,var(--class-colour) 48%,white);box-shadow:2px 3px 0 #1116}
}
.button:not(:disabled):active,.icon-button:not(:disabled):active{transform:translateY(1px);box-shadow:none}
@media(prefers-reduced-motion:reduce){.button,.icon-button,.class-card,.lesson-tile{transition:none!important;transform:none!important}}
@media print{.workspace .card,.workspace .week-calendar,.class-card,.lesson-tile,.tt-lesson,.save-bar{box-shadow:none!important}}
/* Match contextual controls that have their own layout selectors. */
.sidebar-brand img{border-radius:10px}
.classes-section>.section-heading>.button{border:2px solid var(--ink);background:var(--red);color:var(--ink)}
#sidebar-add-class{border:2px solid var(--ink);color:var(--ink);background:#fff;border-radius:9px;box-shadow:1px 2px 0 #1112}
.calendar-header #edit-timetable{border-color:var(--ink)}
.timetable-settings input,.timetable-settings select,.builder-class-tools select,.builder-class-tools input,.reminder-dialog textarea,.reminder-dialog select{border:2px solid var(--ink);color:var(--ink)}
.builder-class-tools .small,.tt-cell.outside{color:var(--muted)}
.timetable-empty h2{color:var(--ink)}
@media(hover:hover){.classes-section>.section-heading>.button:hover:not(:disabled){background:#ee4955;box-shadow:3px 3px 0 var(--ink)}#sidebar-add-class:hover{background:var(--soft)}}

/* Independent completion control, beside the tile's lesson-opening button. */
.tt-lesson-wrap{position:relative;width:100%;min-width:0;min-height:0;display:flex}
.tt-lesson.has-plan strong{padding-right:34px}
.tt-status{position:absolute;top:0;right:0;width:40px;height:40px;min-height:0;padding:0;border:0;background:transparent;color:#111;display:grid;place-items:center;border-radius:10px;cursor:pointer;touch-action:manipulation}
.tt-status-circle{width:23px;height:23px;border:2px solid #111;border-radius:50%;display:grid;place-items:center;background:#fff;transition:background-color 160ms ease,box-shadow 160ms ease}
.tt-status-circle svg{width:18px;height:18px;fill:none;stroke:#111;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round;opacity:0}
.tt-status[aria-pressed=true] .tt-status-circle{background:var(--red)}
.tt-status[aria-pressed=true] svg{opacity:1}
.tt-status[aria-busy=true]::before{content:none}
.tt-status[aria-busy=true] .tt-status-circle{border-style:dashed;animation:feedback-spin .8s linear infinite}
.tt-status:disabled{opacity:1;cursor:wait}
@media(hover:hover){.tt-status:not(:disabled):hover .tt-status-circle{box-shadow:0 0 0 3px #fff,0 0 0 5px #111}}
.tt-dense .tt-status{width:30px;height:30px}
.tt-dense .tt-status-circle{width:21px;height:21px}
.tt-dense .tt-lesson.has-plan strong{padding-right:26px}
@media(pointer:coarse){.tt-status{width:44px;height:44px}.tt-lesson.has-plan strong{padding-right:38px}}
@media(prefers-reduced-motion:reduce){.tt-status-circle{transition:none!important;animation:none!important}}

/* Dictation stays anchored to the observations it creates. */
.lesson-observations-card{min-width:0;overflow:visible}
.observation-controls{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap;margin-left:auto}
.observation-controls .button{font-size:11px;height:46px;min-height:46px;padding:8px 12px;white-space:nowrap}
.save-observation-button:not([hidden]){animation:observation-save-in 180ms ease-out both}
.observations-heading{flex-wrap:wrap}
.saved-observations{margin-top:24px;padding-top:20px;border-top:1.5px solid #111}
.saved-observations>h3{font-size:13px;margin:0 0 13px;color:#111}
.saved-observation{border:1.5px solid #111;border-radius:10px;background:#fff;box-shadow:2px 3px 0 #1112;margin:0 0 12px;overflow:hidden}
.saved-observation>summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px;cursor:pointer;min-height:62px;color:#111;background:#e9f6f3}
.saved-observation>summary::-webkit-details-marker{display:none}
.saved-observation>summary:hover{background:#d5eeea}
.saved-observation>summary strong{font-size:14px;line-height:1.5;display:block;overflow-wrap:anywhere}
.saved-observation>summary small{font-size:11px;color:#333;display:block;margin-top:4px}
.saved-observation>summary svg{width:17px;height:17px;fill:none;stroke:#111;stroke-width:2;flex:none;transition:transform 180ms ease}
.saved-observation[open]>summary svg{transform:rotate(90deg)}
.saved-observation-content{padding:0 16px 16px;border-top:1px solid #1113}
.saved-observation-content>p{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;line-height:1.85;margin:16px 0;color:#111}
.saved-observation-actions{display:flex;flex-wrap:wrap;gap:8px 18px}
.saved-observation-actions .text-button{font-size:12px;min-height:40px;color:#111}
.saved-observation-actions .danger{color:#b51d2c}
@keyframes observation-save-in{from{opacity:0;transform:translateY(4px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}
@media(prefers-reduced-motion:reduce){.save-observation-button:not([hidden]){animation:none}.saved-observation>summary svg{transition:none}}
.observations-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:20px}
.record-columns .observations-heading h2,.editor-columns .observations-heading h2{margin:0;line-height:1.3}
.voice-anchor{position:relative;flex:none}
.voice-button{min-width:112px;gap:9px}
.voice-button>svg{width:21px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}
.voice-wave{height:24px;display:none;align-items:center;gap:3px;width:26px;justify-content:center}
.voice-wave i{display:block;width:3px;height:18px;border-radius:3px;background:currentColor;transform:scaleY(.3);animation:voice-wave 850ms ease-in-out infinite alternate}
.voice-wave i:nth-child(2){animation-delay:-350ms}.voice-wave i:nth-child(3){animation-delay:-650ms}.voice-wave i:nth-child(4){animation-delay:-150ms}.voice-wave i:nth-child(5){animation-delay:-450ms}
.voice-button[data-phase=recording]>svg{display:none}.voice-button[data-phase=recording] .voice-wave{display:flex}
.voice-button[data-phase=recording]{background:var(--red);color:#111;box-shadow:0 0 0 3px #e6394626}
.voice-bubble{position:absolute;right:0;top:calc(100% + 14px);width:285px;max-width:calc(100vw - 40px);z-index:12;background:#fff;color:#111;border:2px solid #111;border-radius:16px;padding:18px;box-shadow:4px 4px 0 #1113;transform-origin:top right;transform:translateY(-5px) scale(.88);opacity:0;transition:transform 240ms cubic-bezier(.2,.8,.2,1),opacity 160ms ease;pointer-events:none}
.voice-bubble.is-open{transform:translateY(0) scale(1);opacity:1;pointer-events:auto}
.voice-bubble:before{content:'';position:absolute;right:24px;top:-8px;width:12px;height:12px;background:#fff;border-top:2px solid #111;border-left:2px solid #111;transform:rotate(45deg)}
.voice-bubble p{font-size:14px;line-height:1.6;margin:0;white-space:normal;overflow-wrap:anywhere}
.voice-recovery{display:flex;gap:20px}.voice-recovery:has(button:not([hidden])){margin-top:8px}
.observation-text{width:100%;min-height:260px;font-size:15px;line-height:1.8;resize:vertical}
.observation-save{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:14px}
.observation-save .small{font-size:12px;flex:1;min-width:140px}
.earlier-observations{margin-top:20px;border-top:1px solid #b6c5c2;padding-top:15px}
.earlier-observations>summary{cursor:pointer;font-size:13px;font-weight:700;min-height:44px;display:list-item;line-height:1.5}
.earlier-observations .observation-columns{grid-template-columns:1fr;gap:14px}
.earlier-observations .observation-note{padding:14px 0}
@keyframes voice-wave{from{transform:scaleY(.25)}to{transform:scaleY(1)}}
@media(max-width:600px){.observations-heading{flex-wrap:wrap}.voice-button{min-width:104px}.observation-text{font-size:16px}.voice-bubble{width:255px}}
@media(prefers-reduced-motion:reduce){.voice-bubble{transform:none!important;transition:none!important}.voice-wave i{animation:none!important}.voice-wave i:nth-child(2n){transform:scaleY(.8)}}

/* A persistent lesson details card keeps heading and actions together. */
.lesson-summary-card{margin-bottom:24px}
.lesson-card-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:22px}
.lesson-card-heading>div{min-width:0}
.lesson-card-heading h1{font-size:clamp(25px,2.4vw,36px);line-height:1.25;margin:7px 0 0;overflow-wrap:anywhere}
.lesson-card-heading .eyebrow{color:var(--muted)}
.lesson-summary-card .record-meta{padding:0;margin:0 0 24px;background:none;border:0;box-shadow:none}
.lesson-summary-card .lesson-details{padding:0;border:0;background:none}
.lesson-summary-card .lesson-details>input{margin-bottom:20px}
.lesson-card-actions{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:10px;border-top:1px solid #b6c5c2;padding-top:20px;margin-top:24px}
.lesson-card-actions .button{min-height:44px;white-space:nowrap}
.lesson-save-slot{width:0;opacity:0;overflow:hidden;flex:0 0 auto;margin-left:-10px;transition:width 260ms cubic-bezier(.2,.8,.2,1),margin-left 260ms cubic-bezier(.2,.8,.2,1),opacity 140ms ease}
.lesson-save-slot>div{width:142px;padding:0 3px 3px 0}
.lesson-save-slot .button{width:100%}
.is-editing .lesson-save-slot{width:142px;margin-left:0;opacity:1}
@media(max-width:600px){.lesson-card-heading{gap:12px}.lesson-card-heading h1{font-size:25px}.lesson-card-actions{justify-content:flex-start;gap:8px}.lesson-card-actions .button{font-size:12px;padding:10px 12px}.lesson-save-slot{margin-left:-8px}.is-editing .lesson-save-slot{margin-left:0}.lesson-summary-card .lesson-fields{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){.lesson-save-slot{transition:none!important}}
@media print{.lesson-card-actions{display:none}}

.observation-controls .voice-button[data-phase=recording]{background:var(--red);color:#111}

/* Dictation stays red; explicit saving uses a lighter version of the page teal. */
.observation-controls .voice-button{background:#e63946;color:#111;border-color:#111}
.observation-controls .voice-button:hover:not(:disabled){background:#ee4955;color:#111}
.observation-controls .save-observation-button{background:#d5eeea;color:#111;border-color:#111}
.observation-controls .save-observation-button:hover:not(:disabled){background:#b8e1da;color:#111}

/* The class overview gives all available width to its class tiles. */
.dashboard-grid{grid-template-columns:minmax(0,1fr)}
.class-summary-card{margin-bottom:24px}
.class-summary-controls{display:flex;justify-content:flex-start;margin:0 0 22px}
.class-summary-controls .button{min-height:44px}

/* Approved TeachTally wordmark: one consistent lockup on paper surfaces. */
.brand .brand-lockup,.sidebar-brand .brand-lockup{display:block;width:194px;height:auto;max-width:100%;object-fit:contain;border:0;border-radius:0;flex-shrink:1}
.sidebar-brand{padding:0 0 26px;gap:0}
.sidebar-brand .brand-lockup{width:194px}
.topbar .brand .brand-lockup{width:166px;height:auto}
@media(max-width:850px){.app-active .topbar .brand .brand-lockup,.topbar .brand .brand-lockup{display:block;width:148px;height:auto}.sidebar-brand .brand-lockup{width:194px}}
@media(max-width:375px){.topbar .brand .brand-lockup,.app-active .topbar .brand .brand-lockup{width:132px}}
.class-summary-card h2{margin:4px 0 0;font-size:25px}
.class-summary-card .section-heading{align-items:center;margin-bottom:12px}
.class-summary-range{font-size:13px;font-weight:700;color:#111;margin-bottom:22px}
.class-summary-sections{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 32px}
.class-summary-sections>section:first-child{grid-column:1/-1}
.class-summary-sections h3{font-size:14px;letter-spacing:0;color:#111;margin:0 0 8px}
.class-summary-sections p{font-size:15px;line-height:1.85;white-space:pre-wrap;margin:0;color:#111;overflow-wrap:anywhere}
#class-summary-status{font-size:12px;color:#243b36;border-top:1px solid #1113;padding-top:16px;margin:22px 0 0}
.summary-empty{font-size:15px;line-height:1.8;color:#111;margin:0}
.class-notes-archive{border-top:1px solid #1113;margin-top:20px;padding-top:12px}
.class-notes-archive>summary{font-size:13px;font-weight:700;cursor:pointer;min-height:44px;line-height:44px;color:#111}
@media(max-width:700px){.class-summary-sections{grid-template-columns:1fr;gap:22px}.class-summary-card .section-heading{flex-wrap:wrap;gap:12px}}

/* Login progress stays inside its button, with the same red treatment as Dictate. */
#auth-submit{display:flex;align-items:center;justify-content:center;gap:4px;min-height:52px}
#auth-submit .auth-progress{display:none;align-items:center;justify-content:center;gap:4px;width:30px;height:18px;flex:none}
#auth-submit .auth-progress i{display:block;width:5px;height:5px;background:currentColor;border-radius:50%}
#auth-submit[aria-busy="true"]{background:var(--red);color:#111;border-color:#111;opacity:1;cursor:wait;box-shadow:2px 2px 0 #1113}
#auth-submit[aria-busy="true"]::before{display:none}
#auth-submit[aria-busy="true"] .auth-progress{display:inline-flex}
#auth-submit[aria-busy="true"] .auth-progress i{animation:auth-dots 1.1s ease-in-out infinite}
#auth-submit[aria-busy="true"] .auth-progress i:nth-child(2){animation-delay:140ms}
#auth-submit[aria-busy="true"] .auth-progress i:nth-child(3){animation-delay:280ms}
@keyframes auth-dots{0%,60%,100%{transform:translateY(0);opacity:.5}30%{transform:translateY(-4px);opacity:1}}
@media(prefers-reduced-motion:reduce){#auth-submit[aria-busy="true"] .auth-progress i{animation:none;transform:none;opacity:1}}