/* iOS-inspired classroom UI. Loaded only by index.html; print art stays independent. */
:root{
 --paper:#f2f2f7;
 --surface:#ffffff;
 --ink:#1c1c1e;
 --muted:#636369;
 --jade:#0066cc;
 --pale:#eaf2ff;
 --gold:#996100;
 --gold-light:#fff2d6;
 --line:#dcdce2;
 --rose:#b33b32;
 --care-paper:#fff1ea;
 --care-ink:#873c24;
 --shadow:0 8px 24px rgba(28,28,30,.07);
 --ui-font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
 --ui-accent:#0066cc;
 --ui-accent-hover:#0057ad;
 --ui-fill:#e9e9ef;
 --ui-hover:#f5f5fa;
 --ui-field-line:#b8b8c0;
 --ui-radius:14px;
 --ui-sidebar:238px;
 color-scheme:light;
}
body{font-family:var(--ui-font);line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3,.brand,.pet-name,.welcome-title,.honor-card h3,
.form-journey figcaption strong,.reward-notice strong{font-family:var(--ui-font)}
h1{font-size:34px;font-weight:700;letter-spacing:-.025em;line-height:1.25}
h2{font-size:23px;font-weight:650;letter-spacing:-.015em}
h3{font-weight:650}
button,input,select,textarea{font-family:var(--ui-font)}
button{border-radius:11px;background:var(--ui-accent);font-weight:600;transition:background-color .16s ease-out}
button:hover{background:var(--ui-accent-hover)}
button.secondary{background:var(--pale);color:var(--ui-accent)}
button.secondary:hover{background:#dceaff}
button.quiet{color:var(--ui-accent);background:transparent}
button.quiet:hover{background:var(--ui-fill)}
button:disabled{opacity:1;background:var(--ui-fill);color:var(--muted)}
button.quiet:disabled{background:transparent;color:var(--muted)}
button.small{min-height:44px}
.icon-button{color:var(--muted);background:var(--ui-fill);border-radius:50%}
.icon-button:hover{color:var(--ink);background:var(--line)}
.icon{stroke-width:1.8}
input,select,textarea{background:var(--surface);border-color:var(--ui-field-line);border-radius:10px}
input::placeholder,textarea::placeholder{color:var(--muted)}
input[type=checkbox]{accent-color:var(--ui-accent)}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,
textarea:focus-visible,summary:focus-visible{outline:3px solid var(--ui-accent);outline-offset:3px}
.sidebar{width:var(--ui-sidebar);background:#fafafd;color:var(--ink);border-right:1px solid var(--line);padding:28px 18px 22px}
.sidebar .brand{color:var(--ink);font-size:20px;gap:10px;letter-spacing:-.025em;margin-bottom:34px}
.sidebar .brand small{font-family:var(--ui-font);font-size:12px;letter-spacing:0;color:var(--muted);font-weight:400;line-height:1.6;margin-top:4px}
.sidebar .brand-mark{width:42px;height:42px;flex:none;border:0;border-radius:12px;background:var(--ui-accent);color:white}
.brand-mark svg{width:29px;height:29px;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round}
.sidebar .class-label{color:var(--muted);font-size:12px;padding-left:4px;margin-bottom:8px}
.sidebar select{background:var(--surface);color:var(--ink);border-color:var(--line);font-size:14px}
.sidebar button.quiet{color:var(--ui-accent)}
.sidebar>.small{margin:4px 0 25px;padding:8px 4px}
.sidebar nav{gap:6px}
.sidebar .nav-link{color:#48484e;padding:12px 14px;min-height:48px;border-radius:11px;font-weight:500}
.sidebar .nav-link .icon{color:var(--ui-accent)}
.sidebar .nav-link.active{background:#e4eeff;color:var(--ui-accent);font-weight:650}
.sidebar .nav-link:not(.active):hover,.sidebar button.quiet:hover{background:var(--ui-fill);color:var(--ui-accent)}
.sidebar .sidebar-foot{border-top:1px solid var(--line);padding-top:20px}
.sidebar .sidebar-foot p{color:var(--muted);max-width:none;font-size:12px;margin-bottom:8px}
.sidebar-foot button{font-size:13px}
.shell{margin-left:var(--ui-sidebar)}
.topbar{background:var(--surface);padding-top:10px;padding-bottom:10px;min-height:64px;font-size:13px}
.topbar>span:first-child{color:var(--ink);font-weight:600}
#saveStatus{color:var(--muted)}
.topbar .quiet{font-size:13px}
main{padding-top:30px}
.page-head{border:0;padding-bottom:0;margin-bottom:28px;align-items:center}
.page-head>div:first-child{min-width:0}
.page-head p{font-size:14px;margin-top:10px;line-height:1.7}
.head-actions{flex:none}
.head-action{margin-top:0}
.page-foot{font-size:12px}
.demo-banner{background:#e9eef8;color:#405474;font-size:12px;min-height:48px;padding-top:4px;padding-bottom:4px}
.demo-banner .quiet{color:#245da5}
.save-warning{background:var(--care-paper);color:var(--care-ink)}
.assignment,.form-panel{background:var(--surface);border-radius:var(--ui-radius);box-shadow:none}
.assignment{padding:20px;margin-bottom:22px}
.assignment-meta label,.exam-summary label{font-size:13px}
.assignment p{font-size:13px;line-height:1.7;margin-top:10px}
.assignment h2,.form-panel h2{font-size:22px}
.form-panel{padding:24px}
.homework-progress{margin-bottom:18px}
.check-progress-heading{font-size:13px}
.growth-track{background:#dddde5}
.homework-progress .growth-track{height:5px}
.check-shortcuts{background:var(--ui-fill);padding:4px;border-radius:12px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:3px;margin-top:12px}
.check-shortcuts button{background:transparent;border:0;border-radius:9px;color:#515159;padding:7px 5px;font-size:13px;gap:6px}
.check-shortcuts button:hover{background:#f5f5fa}
.check-shortcuts button.active{background:var(--surface);color:var(--ui-accent);box-shadow:0 2px 5px rgba(28,28,30,.11)}
.check-shortcuts button[data-filter=missing]:not(.active){color:var(--rose)}
.list-tools{gap:10px;margin:20px 0 12px}
.list-tools input{background:#e9e9ef;border-color:transparent}
.list-tools input:focus{background:var(--surface);border-color:var(--ui-accent)}
.filter-select{border-color:var(--line)}
.selection-bar{padding:0 0 12px;background:transparent;border-radius:0;gap:8px}
.selection-bar .select-all{min-height:44px;font-size:12px}
.selection-bar button{font-size:13px;min-height:44px}
.student-list{background:var(--surface);border:0;border-radius:var(--ui-radius);overflow:hidden}
.student-row{padding:14px 14px;min-height:88px;border-color:#e6e6eb;gap:10px}
.student-row:last-child{border-bottom:0}
.student-row.selected{background:#eaf2ff}
.student-info{gap:12px;min-width:0}
.student-info>div{min-width:0}
.student-info img{border-radius:12px}
.student-info strong{font-size:15px;font-weight:650}
.student-info small{font-size:12px;line-height:1.5}
.student-info .name-button{min-height:30px;overflow-wrap:anywhere}
.student-info .name-button:hover{color:var(--ui-accent);text-decoration:none}
.row-actions button{font-size:13px;padding:8px 10px;min-height:44px}
.status-tag{background:#eaf2ff;color:#205fa1;border-radius:6px;font-size:12px;padding:3px 7px;font-weight:500}
.status-tag.missing{background:var(--care-paper);color:var(--care-ink)}
.status-tag.pending{background:#efeff4;color:#5b5b63}
.rule-note{line-height:1.75}
.inline-details summary{min-height:44px;align-content:center;font-size:14px}
.stage .scene-caption{margin:0 0 16px;gap:12px}
.stage .pet-name{font-family:var(--ui-font);font-size:28px;letter-spacing:-.02em;font-weight:700}
.stage .scene-caption span{color:var(--muted);font-size:12px}
.stage .pet-art-window{box-shadow:var(--shadow)}
.stage .scene{background:transparent}
.pet-response{background:var(--surface);border-radius:12px;padding:14px;margin-top:16px}
.pet-response .expression-paper{fill:var(--surface);stroke:#b2b2bc}
.pet-mood-title{font-weight:650}
.pet-companion-tools button{font-size:14px;background:var(--pale)}
.pet-companion-tools button:hover{background:#dceaff}
.stage .pet-state{padding-top:22px}
.pet-state>strong{font-size:17px}
.pet-state p,.journal p{font-size:13px}
.hunger-note{background:var(--care-paper);color:var(--care-ink)}
.growth-stops{font-size:12px;gap:6px}
.pet-state .facts{font-size:12px}
.next-growth,.effort-preview{border-color:var(--line)}
.earned-token{color:#805300}
.roster-pet,.honor-card{border-radius:var(--ui-radius);background:var(--surface)}
.roster-pet img,.honor-card img{border-radius:14px 14px 0 0}
.roster-pet .roster-body,.honor-card .card-copy{padding:16px}
.roster-pet h3{font-size:17px}
.roster-pet p,.honor-card p{font-size:13px}
.roster-pet button{font-size:13px}
.honor-card h3{font-size:22px;font-weight:650}
.honor-card .card-stamp{color:#805300;font-size:12px}
.print-promise h2{font-size:23px}
.gift-list .icon{color:#996100}
.reward-copy{color:#805300}
.settings h2{font-size:22px;margin:28px 0 12px}
.settings .form-grid{background:var(--surface);padding:20px;border-radius:14px;gap:18px}
.settings .link-row{background:var(--surface);padding:18px 20px;border-bottom-color:#e6e6eb}
.settings .link-row:first-of-type{border-radius:14px 14px 0 0}
.settings .link-row:last-of-type{border-radius:0 0 14px 14px;border-bottom:0}
dialog{background:var(--paper);padding:26px;border-radius:20px;box-shadow:0 24px 80px rgba(28,28,30,.22)}
dialog::backdrop{background:rgba(28,28,30,.32)}
.dialog-head h2{font-size:24px}
.dialog-head .icon-button{width:44px;height:44px;min-width:44px;min-height:44px}
.pet-option{background:var(--surface);color:var(--ink)}
.pet-option:hover{background:var(--pale);color:var(--ui-accent)}
.pet-option span{font-size:13px;padding:10px 3px}
.reward-notice{background:var(--surface);border:0;box-shadow:none}
.reward-notice strong{font-size:22px}
.reward-notice p{color:var(--muted)}
.reward-notice .icon-button{min-width:36px;min-height:36px;height:36px;padding:7px}
.reward-notice>div{min-width:0}
.week-effort{border:0;background:var(--surface);padding:22px}
.week-heading h2{font-size:22px}
.week-mark{background:var(--paper);color:var(--muted)}
.week-days .today .week-mark{outline-color:var(--ui-accent)}
.week-days .earned .week-mark{background:var(--ui-accent);color:white}
.week-days .future{opacity:1}
.form-journey .current .journey-art:after{inset:4px;border-color:var(--ui-accent)}
.form-journey figcaption strong{font-size:19px;font-weight:650}
.book-intro p{font-size:15px}
.book-intro h2,.badge-collection h2,.makeup-list h2,.personal-journal h2{font-size:23px}
.badge-collection ul,.personal-journal ol{background:var(--surface);padding:0 18px;border-radius:14px}
.badge-collection li:last-child,.personal-journal li:last-child{border-bottom:0}
.earned .badge-symbol{background:var(--gold-light);color:#805300}
.care-summary{background:var(--surface);padding:20px}
.care-student{border:0;padding:20px;background:var(--surface);border-radius:14px;margin-top:16px}
.care-student.selected{box-shadow:inset 0 0 0 1px var(--ui-accent)}
.care-empty{background:var(--surface);border-radius:14px;margin-top:20px}
.care-empty h2{font-size:23px}
.care-countdown{color:var(--care-ink)}
.welcome-title{font-size:44px;font-weight:700;letter-spacing:-.03em;line-height:1.3}
.welcome .scene:before{display:none}
.welcome .scene{background:var(--surface)}
.welcome .pet-bubble{background:rgba(255,255,255,.96)}
.toast{background:#303035;box-shadow:0 8px 24px rgba(28,28,30,.16);left:calc(50% + var(--ui-sidebar)/2)}
@media(min-width:1001px) and (max-width:1270px){
 .page-head{flex-wrap:wrap;gap:18px}
 .work-layout{grid-template-columns:minmax(0,1fr) 32%;gap:24px}
 .student-info img{width:44px;height:44px}
 .student-row{padding:12px 10px;gap:8px}
 .row-actions{flex-wrap:wrap;max-width:112px;justify-content:flex-end}
 .selection-bar .select-all{flex-basis:calc(100% - 90px)}
 .check-shortcuts button{flex-direction:column;gap:0}
}
@media(max-width:1150px){
 :root{--ui-sidebar:200px}
 .sidebar{padding:24px 14px}
 .sidebar .brand{font-size:17px;gap:8px}
 .sidebar .brand-mark{width:36px;height:36px;border-radius:10px}
 .brand-mark svg{width:26px;height:26px}
 .sidebar .nav-link{padding:12px}
 .stage .pet-name{font-size:26px}
}
@media(min-width:701px) and (max-width:1000px){
 .work-layout{grid-template-columns:minmax(0,1fr)}
 .stage .pet-state{padding-top:0}
 .page-head{gap:18px}
 .student-row{padding:14px}
 .student-info img{display:block;width:44px;height:44px}
 .row-actions{max-width:none}
}
@media(max-width:700px){
 .sidebar{width:auto;padding:18px 20px;background:var(--surface);grid-template-columns:minmax(0,1fr) 135px;border:0}
 .sidebar .brand{margin:0;font-size:18px;gap:9px}
 .sidebar .brand small{font-size:11px}
 .sidebar .brand-mark{width:36px;height:36px}
 .sidebar select{background:var(--paper);border:0;font-size:12px;min-height:44px}
 .sidebar nav{background:rgba(250,250,253,.94);backdrop-filter:blur(18px);border-top:1px solid var(--line);box-shadow:none;padding:6px 6px calc(6px + env(safe-area-inset-bottom))}
 .sidebar .nav-link{color:var(--muted);font-size:11px;font-weight:500;gap:4px;min-height:52px;padding:5px 2px;border-radius:0}
 .sidebar .nav-link .icon{color:inherit;width:22px;height:22px}
 .sidebar .nav-link.active{color:var(--ui-accent);background:transparent;font-weight:650}
 .sidebar .nav-link:not(.active):hover{background:var(--ui-fill)}
 .shell{margin:0}
 .topbar{padding:4px 20px;gap:10px;min-height:52px}
 #saveStatus{font-size:12px}
 .topbar .quiet{padding:6px;font-size:12px}
 main{padding-top:26px}
 h1{font-size:32px;letter-spacing:-.025em}
 .page-head{align-items:flex-start;padding:0;margin-bottom:24px;gap:18px}
 .page-head p{font-size:13px}
 .head-actions{gap:8px}
 .head-action{font-size:14px}
 .demo-banner{font-size:12px;gap:8px;padding:5px 20px}
 .demo-banner button{font-size:12px;min-height:44px}
 .assignment{padding:18px}
 .form-panel{padding:20px}
 .check-shortcuts{gap:3px}
 .check-shortcuts button{font-size:12px;gap:1px;min-height:52px;padding:5px 2px}
 .list-tools input,.filter-select{font-size:14px}
 .selection-bar{gap:8px;padding-bottom:12px}
 .selection-bar button{padding:8px 10px;font-size:13px}
 .student-row{padding:14px 10px}
 .student-info strong{font-size:15px}
 .student-info .name-button{min-height:44px}
 .row-actions button{font-size:13px}
 .stage .pet-name{font-size:28px}
 .stage .pet-state{padding-top:24px}
 .stage .scene-caption{margin-top:0}
 .stage .pet-response{padding:14px}
 .pet-companion-tools{margin-top:10px}
 .pet-companion-tools button{font-size:14px}
 .roster-grid,.card-preview{gap:18px 12px}
 .roster-pet .roster-body,.honor-card .card-copy{padding:13px}
 .roster-pet h3{font-size:16px}
 .roster-pet p{font-size:12px}
 .roster-pet button{font-size:12px;min-height:44px}
 .honor-card h3{font-size:20px}
 .honor-card button{font-size:13px;padding:10px 6px}
 .honor-card p{font-size:12px}
 .reward-notice strong{font-size:19px}
 .reward-notice p{font-size:13px}
 .week-effort{padding:16px}
 .week-heading h2{font-size:22px}
 .settings .form-grid{padding:18px}
 .settings .link-row{padding:16px 18px}
 .care-student{padding:18px}
 .care-countdown{padding-left:0}
 .welcome-title{font-size:36px}
 .page-foot{font-size:12px;padding-bottom:105px}
 dialog{padding:20px;border-radius:18px}
 .dialog-head h2{font-size:22px}
 .pet-grid{gap:10px;grid-template-columns:repeat(3,minmax(0,1fr))}
 .toast{left:50%;bottom:85px}
}
@media(max-width:360px){
 .sidebar{grid-template-columns:minmax(0,1fr) 112px;gap:8px}
 .sidebar .brand{font-size:16px;gap:7px}
 .sidebar .brand-mark{width:30px;height:30px;border-radius:9px}
 .brand-mark svg{width:23px;height:23px}
 .sidebar .brand small{font-size:10px}
 .topbar{gap:4px}
 .topbar .quiet{padding:6px 4px}
 .roster-grid,.card-preview{grid-template-columns:minmax(0,1fr)}
 .pet-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .selection-bar button{padding:8px}
 .student-row{padding-left:6px;padding-right:8px}
 .week-effort{padding:14px}
 .care-student{padding:16px}
}
@media(prefers-reduced-motion:reduce){button{transition:none}}