/* Compact workspace and shared surfaces. Purple remains the primary accent. */
:root{--radius:12px;--control-radius:10px;--surface:#f7f6fa;--success:#327a66;--warning:#9a5e1e;color-scheme:light}
:root[data-theme=dark]{--ink:#eeeaf5;--muted:#b4afc4;--purple:#b2a0ff;--purple-dark:#c5b7ff;--lavender:#342d4e;--paper:#20212d;--bg:#181923;--border:#3a394a;--surface:#292936;--sidebar:#181923;--success:#81cbb5;--warning:#e5b475;--action:#7963d2;--action-hover:#705abd;--on-action:#fff;--success-surface:#203a35;--warning-surface:#3c3124;--danger:#f3a8b3;--danger-surface:#412b32;color-scheme:dark}
.workspace :is(.button,.icon-button,select,input:not([type=checkbox]),textarea){border-radius:var(--control-radius)}
.workspace .button{gap:6px;padding:8px 12px;font-size:13px;min-height:40px}
.workspace .icon-button{width:40px;height:40px}
.workspace .icon{width:20px;height:20px;stroke-width:1.7}
.sidebar{width:228px;padding:18px 12px 0;overflow-y:auto}
.sidebar-top{margin-bottom:16px;padding:0 8px}.sidebar .brand{font-size:21px}.sidebar .brand-mark{width:36px;height:36px;font-size:24px;border-radius:var(--control-radius)}.sidebar .brand-caption{font-size:9px;margin-top:4px}
.sidebar-divider{margin:12px 8px}.sidebar-section-label{margin-bottom:6px;font-size:9px}.sidebar .space-nav{min-height:48px;margin-bottom:3px;padding:8px 12px;gap:10px;border-radius:var(--control-radius);font-size:13px}.space-nav small{font-size:11px;margin-top:2px}.space-nav.active{background:#51426e;color:#fff;box-shadow:inset 3px 0 #b7a3ff}.space-nav.active small{color:#d8ccef}.nav-icon{width:22px;height:22px;display:inline-flex;align-items:center;justify-content:center}
.class-item{min-height:52px;padding:8px}.sidebar .class-switcher-toggle{min-height:52px}.class-switcher-text{min-width:0;flex:1}.class-switcher-chevron{flex:none}.sidebar-bottom{padding-top:12px}.sidebar-quote{display:none}.profile{padding:12px 2px}.profile-settings{width:100%;background:transparent;color:inherit;text-align:left;border:0;border-top:1px solid #3b3c4c;cursor:pointer}.profile-settings:hover{background:#333546}.profile-settings>.icon{flex:none;color:#bcb9ca}.sidebar .unread-count{margin-left:auto}.account-logout{margin-top:20px;color:var(--muted)}.mobile-account .avatar{width:30px;height:30px;font-size:13px;border-radius:50%}
.chat-header{min-height:68px;padding:8px 24px;gap:10px;border-bottom:1px solid var(--border);background:var(--paper)}
.header-class-context{display:flex;align-items:center;gap:8px;min-width:0}#header-class-switch{min-width:0}
.chat-title h1{font-size:18px;line-height:1.3;letter-spacing:-.3px;margin-top:2px}.title-dot{display:none}
#header-class-switch{display:flex;align-items:center;gap:7px;max-width:min(54vw,440px);padding:2px 0;border:0;background:transparent;color:var(--muted);font-size:12px;line-height:1.6;text-align:left;min-height:26px}#class-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#header-class-switch:hover{color:var(--purple)}
.header-actions{gap:4px}.language-pill{display:none}.lesson-role{font-size:10px}.conversation-intro{padding:14px 0}.conversation-intro .intro-glyph{font-size:20px}.conversation-intro p{margin-top:4px;font-size:11px}.conversation-intro h2{margin-top:5px}.date-separator{margin:12px 0 16px}.message-scroll{padding:0 24px 12px}.connection-status{padding:6px 24px;font-size:11px}
.message{margin-bottom:12px;gap:8px}.message.own{flex-direction:row-reverse}.message-content{width:auto;min-width:90px;max-width:min(84%,560px)}.message-bubble{padding:10px 13px;border:0;border-radius:var(--radius);background:var(--surface);font-size:14px}.message.own .message-bubble{background:var(--lavender);border-radius:var(--radius)}.message-meta{margin:0 0 4px;font-size:12px}.message.own .message-meta{justify-content:flex-end}.message-you{display:none}.message-time{color:var(--muted);font-size:10px}.message.grouped{margin-top:-7px}.message.grouped>.avatar{visibility:hidden}.message.grouped .message-author,.message.grouped .message-you{display:none}.message.grouped .message-meta{margin-bottom:2px}.message.grouped .message-time{font-size:9px}.message .translation-lines{padding-top:7px;margin-top:6px;border-color:var(--border)}.message .pinyin{font-size:12px;color:var(--muted)}.message .translation-text{font-size:13px;color:var(--muted)}.message .translation-text[lang=zh]{font-size:17px;color:var(--purple)}.message .original-text[lang=zh]{font-size:19px}
.chat-word{display:inline;padding:0;border:0;border-radius:3px;background:transparent;color:inherit;font:inherit;line-height:inherit;letter-spacing:inherit;text-align:inherit}.chat-word:hover,.chat-word:focus-visible{background:var(--lavender);text-decoration:underline;text-decoration-color:var(--purple);text-underline-offset:4px}.word-info-link{background:none;border:0;padding:0;text-align:left;cursor:pointer}
.composer-area{background:var(--paper);padding:0 20px 12px}.chat-options-panel,.composer-menu,.message-context-menu{background:var(--paper);border-color:var(--border);color:var(--ink)}.chat-options-panel .toggle-label{font-size:13px;min-height:38px}.chat-options-search{font-size:13px}.chat-options-panel{padding:10px}
.dictionary-view,.lessons-view,.files-view,.home-view{padding:20px 24px;background:var(--bg)}
.dictionary-overview-heading{flex-direction:row;align-items:center;gap:10px;margin-bottom:14px}.dictionary-overview-heading .eyebrow{display:none}.dictionary-overview-heading h2,.dictionary-heading h2,.files-heading h2,.home-heading h2{font-size:21px;margin:0;line-height:1.4;letter-spacing:-.4px}.dictionary-overview-heading p,.dictionary-heading p,.home-heading p{font-size:13px;line-height:1.5;margin-top:4px;color:var(--muted)}.dictionary-overview-actions{width:auto;flex:none;display:flex;gap:4px;margin:0}.dictionary-overview-actions #dictionary-home-create{flex:none;min-width:40px;width:40px;padding:8px;color:white;background:var(--purple)}
.dictionary-list-menu{position:relative}.dictionary-list-menu summary,.dictionary-card-menu summary{display:flex;align-items:center;justify-content:center;cursor:pointer;list-style:none;width:40px;height:40px;border-radius:var(--control-radius);font-size:22px;color:var(--muted)}.dictionary-list-menu summary::-webkit-details-marker,.dictionary-card-menu summary::-webkit-details-marker{display:none}.dictionary-list-menu[open] summary,.dictionary-card-menu[open] summary{background:var(--lavender);color:var(--purple)}.dictionary-list-menu>.button,.dictionary-card-menu>div{position:absolute;right:0;top:42px;z-index:5;background:var(--paper);color:var(--ink);border:1px solid var(--border);box-shadow:0 8px 24px #0002;border-radius:var(--control-radius);white-space:nowrap;min-width:170px}.dictionary-card-menu>div{display:grid;padding:5px}.dictionary-card-menu button{padding:10px;text-align:left;border:0;background:transparent;border-radius:7px;font-size:13px}.dictionary-card-menu button:hover{background:var(--lavender)}
.dictionary-overview-tools{display:flex;flex-wrap:nowrap;gap:8px;margin:0 0 8px;align-items:center}.dictionary-overview-tools label{margin:0;min-width:0}.dictionary-overview-tools .dictionary-set-search{flex:1;max-width:none;min-width:0}.dictionary-overview-tools input{height:40px;font-size:14px}.dictionary-sort-label{flex:0 1 160px}.dictionary-sort-label select{width:100%;min-height:40px;font-size:12px;padding:6px;border:1px solid var(--border);background:var(--paper);color:var(--ink)}.dictionary-overview-tools #dictionary-home-refresh{width:40px;padding:6px;flex:none}.dictionary-scope-tabs{gap:4px;margin:0 0 5px;padding:3px;background:var(--surface);border:0;border-radius:var(--control-radius)}.dictionary-scope-tabs>button{padding:7px 10px;min-height:36px;font-size:13px;gap:6px}.dictionary-scope-count{font-size:11px}.dictionary-view .dictionary-scope-hint{font-size:11px;margin-bottom:12px}.dictionary-set-cards{gap:12px;grid-template-columns:repeat(auto-fill,minmax(min(100%,280px),1fr))}.dictionary-set-card{padding:14px;gap:0;border-radius:var(--radius);position:relative;cursor:pointer}.dictionary-set-card:hover{border-color:var(--purple)}.dictionary-set-card-top h4{font-size:16px;margin:0}.dictionary-set-open{min-height:40px;line-height:1.35;padding:0}.dictionary-set-chinese{display:block;color:var(--purple);font-size:15px;margin-top:3px}.dictionary-card-menu{position:relative;flex:none}.dictionary-view .dictionary-set-card-meta{font-size:12px;line-height:1.5;margin:5px 0 8px}.dictionary-set-status{display:flex;justify-content:space-between;gap:8px;font-size:12px;color:var(--muted)}.dictionary-set-status b{color:var(--purple);font-weight:600}.dictionary-view .dictionary-repeat-count{font-size:11px;margin:4px 0 10px;color:var(--muted)}.dictionary-set-modes{gap:8px}.dictionary-mode{padding:8px;min-height:60px;background:var(--surface);border:0;border-radius:var(--control-radius)}.dictionary-mode-writing{--mode-color:var(--success)}.dictionary-mode-title{font-size:13px}.dictionary-mode-counts{font-size:11px;gap:6px}.dictionary-mode-counts>span:last-child{color:var(--warning)}.dictionary-mode-segment{background:var(--border)}.dictionary-resume{margin:0 0 14px;padding:12px 14px;background:var(--lavender);border:0;border-radius:var(--radius);gap:10px}.dictionary-resume b{font-size:13px}.dictionary-view .dictionary-resume p{font-size:13px;margin-top:3px}.dictionary-practice-summary{font-size:11px}.dictionary-view .dictionary-heading{margin-bottom:12px}.dictionary-tabs{margin-bottom:12px}.dictionary-tabs button{font-size:13px;min-height:40px;padding:8px 12px}.dictionary-view .dictionary-main{min-width:0}.dictionary-sidebar{border:0;background:var(--paper);border-radius:var(--radius)}.dictionary-view .dictionary-word-row{padding:10px 0;border-radius:0;border:0;border-bottom:1px solid var(--border);background:transparent}.dictionary-word-main p{font-size:13px}.dictionary-completeness{margin-bottom:10px}
.lesson-card,.lesson-detail,.file-item,.dictionary-flashcard{border-radius:var(--radius);background:var(--paper);border-color:var(--border)}.lesson-card{padding:16px}.lesson-card-title{font-size:17px}.lesson-card-description p{font-size:13px}.lesson-card-top,.lesson-card-materials{font-size:12px}.lessons-tools{margin-bottom:12px}.lesson-card-number{font-size:24px}.files-heading{margin-bottom:14px}.file-upload-form{background:var(--paper);border:0;border-radius:var(--radius);padding:16px}
.home-view{flex:1;min-height:0;overflow:auto}.home-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.home-daily{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px;background:var(--lavender);border-radius:var(--radius);margin-bottom:16px}.home-daily h3{font-size:16px;margin:6px 0}.home-daily p{font-size:12px;color:var(--muted)}.daily-counts{display:flex;gap:24px;font-size:12px;color:var(--muted)}.daily-counts b{display:block;font-size:28px;color:var(--purple);margin-bottom:3px}.home-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.home-card{padding:18px;background:var(--paper);border:1px solid var(--border);border-radius:var(--radius);min-width:0}.home-card h3{font-size:14px;margin-bottom:14px}.home-card h4{font-size:17px;margin:7px 0;overflow-wrap:anywhere}.home-card p{font-size:13px;color:var(--muted);line-height:1.6}.home-card>.button{margin-top:14px}.home-repeat b{font-size:24px;color:var(--purple)}.home-tasks{list-style:none;padding:0;margin:0}.home-tasks button{border:0;border-bottom:1px solid var(--border);background:transparent;color:var(--purple);padding:10px 0;width:100%;text-align:left;line-height:1.5}.home-loading{padding:30px 0;color:var(--muted)}
.picker-class{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;padding:12px;margin-bottom:6px;text-align:left;border:1px solid var(--border);border-radius:var(--control-radius);background:var(--paper);color:var(--ink)}.picker-class.active{background:var(--lavender);border-color:var(--purple)}.picker-class small{display:block;margin-top:4px;color:var(--muted);font-size:12px}#header-class-list{margin:14px 0}.theme-setting{margin-top:16px}.theme-setting select,.word-info-modal select{padding:10px;border:1px solid var(--border);color:var(--ink);background:var(--paper);min-height:44px}.bottom-nav{display:none}
/* A paper-colored board is intentional: ink and stroke hints retain their calibrated contrast. */
.hanzi-board{background:#fff;color:#282937}.hanzi-pagination{position:sticky;bottom:0;z-index:3;display:flex;align-items:center;justify-content:space-between;gap:8px;background:var(--paper);border-top:1px solid var(--border);padding:10px 0 calc(10px + env(safe-area-inset-bottom))}.hanzi-actions{gap:6px;margin-top:8px}.hanzi-actions .button{font-size:12px}.dictionary-view .hanzi-feedback{font-size:13px;min-height:22px;margin:8px 0}.practice-heading{margin-bottom:10px;gap:8px}.practice-heading b{font-size:14px}.practice-heading span,.practice-picker summary{font-size:12px}.hanzi-character-heading{margin-bottom:8px}.hanzi-results{background:var(--surface);border-color:var(--border)}
:root[data-theme=dark] :is(.auth-panel,.chat-main,.composer,.composer-area,.modal,.practice-picker[open],.dictionary-editor-footer,.dictionary-draft-table input,.lesson-material-picker,.lesson-upload-button,.file-upload-form,.file-row,.lesson-section,.dictionary-character-card){background:var(--paper);color:var(--ink);border-color:var(--border)}
:root[data-theme=dark] :is(input:not([type=checkbox]),textarea,select){background:var(--paper);color:var(--ink);border-color:var(--border)}
:root[data-theme=dark] :is(.class-details,.search-bar,.tabs,.mode-switch,.composer-language,.dictionary-bulk,.dictionary-draft-table tr,.lesson-status,.lesson-filters,.hanzi-settings,.hanzi-catalog,.dictionary-character,.dictionary-character-item,.dictionary-character-tile){background:var(--surface);color:var(--muted);border-color:var(--border)}
:root[data-theme=dark] :is(.translation-text,.pinyin,.dictionary-word-pinyin,.dictionary-word-meaning,.dictionary-overview p,.lesson-card-description p,.lesson-detail p,.dictionary-heading p,.file-row p,.file-row small,.hanzi-word-context,.hanzi-feedback,.practice-heading span,.dictionary-privacy,.dictionary-mode-counts,.chat-options-search,.composer-context){color:var(--muted)}
:root[data-theme=dark] :is(.primary,.composer-action.primary,.voice-toggle,.appearance-preview-send,.hanzi-training-modes button[aria-pressed=true]){background:var(--action);color:var(--on-action)}
:root[data-theme=dark] :is(.primary,.voice-toggle):hover:not(:disabled),:root[data-theme=dark] .is-buffering .voice-toggle{background:var(--action-hover)}
:root[data-theme=dark] :is(.button.secondary,.secondary,.tabs button.active,.dictionary-scope-tabs button.active,.dictionary-tabs button.active,.dictionary-character-card:hover,.dictionary-mode:hover:not(:disabled),.chat-options-search:hover){background:var(--lavender);color:var(--purple)}
:root[data-theme=dark] :is(.dictionary-menu-items,.dictionary-editor-footer,.composer-context,.message-quote,.hanzi-tips,.dictionary-character-grid button){background:var(--surface);border-color:var(--border);color:var(--ink)}
:root[data-theme=dark] :is(.connection-status,.form-error){background:#412b32;color:#ffc7b6}:root[data-theme=dark] .connection-status.demo-status{background:var(--lavender);color:var(--purple)}
:root[data-theme=dark] .message-status.error{color:#f3b6a3}:root[data-theme=dark] .dictionary-mode-segment.is-complete{background:var(--mode-color)}:root[data-theme=dark] .dictionary-mode-segment.needs-repeat{background:var(--warning)}
/* Dark surfaces keep their own states; broad overrides must not flatten status colors. */
:root[data-theme=dark] :is(input,textarea)::placeholder{color:var(--muted);opacity:1}
:root[data-theme=dark] .dictionary-set-menu>summary{background:var(--surface);color:var(--muted);border-color:var(--border)}
:root[data-theme=dark] .dictionary-set-menu>summary:hover,:root[data-theme=dark] .dictionary-set-menu[open]>summary{background:var(--lavender);color:var(--purple)}
:root[data-theme=dark] .dictionary-menu-items .button{background:transparent;color:var(--ink)}
:root[data-theme=dark] .dictionary-menu-items .button:hover{background:var(--lavender)}
:root[data-theme=dark] .dictionary-menu-items .danger{color:var(--danger)}
:root[data-theme=dark] .dictionary-word-progress button{background:var(--surface);color:var(--muted);border-color:var(--border)}
:root[data-theme=dark] .dictionary-word-memory.is-known{background:var(--lavender);color:var(--purple)}
:root[data-theme=dark] .dictionary-word-memory.needs-repeat{background:var(--warning-surface);color:var(--warning)}
:root[data-theme=dark] .dictionary-word-progress .dictionary-word-writing{background:var(--success-surface);color:var(--success)}
:root[data-theme=dark] .dictionary-word-progress button:hover:not(:disabled){border-color:currentColor}
:root[data-theme=dark] .dictionary-word-repeat{color:var(--warning)}
:root[data-theme=dark] .dictionary-word-segment{background:var(--border)}
:root[data-theme=dark] .dictionary-word-segment.is-complete{background:var(--success)}
:root[data-theme=dark] .dictionary-word-segment.is-repeat{background:var(--warning)}
:root[data-theme=dark] :is(.dictionary-character-info,#dictionary-card-pinyin){color:var(--muted)}
:root[data-theme=dark] .dictionary-character:hover{background:var(--lavender);border-color:var(--purple)}
:root[data-theme=dark] .dictionary-character-status{background:var(--paper);color:var(--muted)}
:root[data-theme=dark] .dictionary-character.is-complete .dictionary-character-status{background:var(--success-surface);color:var(--success)}
:root[data-theme=dark] .dictionary-character.is-repeat .dictionary-character-status{background:var(--warning-surface);color:var(--warning)}
:root[data-theme=dark] .dictionary-scope-count{background:var(--paper);color:var(--muted)}
:root[data-theme=dark] .dictionary-scope-tabs>.active .dictionary-scope-count{background:var(--purple);color:var(--bg)}
:root[data-theme=dark] .dictionary-draft-table th{background:var(--surface)}
:root[data-theme=dark] .dictionary-draft-table .dictionary-draft-invalid{background:var(--danger-surface)}
:root[data-theme=dark] .dictionary-draft-error{color:var(--danger)}
:root[data-theme=dark] #practice-picker-content .hanzi-character b{color:var(--muted)}
:root[data-theme=dark] #practice-picker-content .hanzi-character.is-complete b{color:var(--success)}
:root[data-theme=dark] #practice-picker-content .hanzi-character.is-repeat b{color:var(--warning)}
:root[data-theme=dark] #practice-picker-content .hanzi-character.is-repeat{background:var(--warning-surface);border-color:var(--warning)}

/* Only the scannable QR canvas stays white, including its quiet zone. */
:root[data-theme=dark] :is(.invite-class,.invite-qr-card){background:var(--surface);border-color:var(--border);color:var(--ink)}
:root[data-theme=dark] .invite-qr:not(:has(svg)){background:var(--paper);color:var(--muted)}
:root[data-theme=dark] .invite-code-row{border-color:var(--border)}
:root[data-theme=dark] .invite-modal>.invite-status{background:var(--success-surface);color:var(--success)}
:root[data-theme=dark] .invite-status:before{background:var(--success)}
:root[data-theme=dark] .invite-modal>.invite-status.inactive{background:var(--warning-surface);color:var(--warning)}
:root[data-theme=dark] .invite-status.inactive:before{background:var(--warning)}

/* Voice controls sit directly on both incoming and outgoing message bubbles. */
:root[data-theme=dark] .voice-wave-track{opacity:.6}
:root[data-theme=dark] .voice-speed:hover{background:var(--lavender)}
:root[data-theme=dark] .reply-quote{background:var(--surface);border-color:var(--purple)}
:root[data-theme=dark] .translation-guide{background:var(--paper);border-color:var(--border)}
:root[data-theme=dark] :is(.details-top h2,.guide-line b){color:var(--ink)}
:root[data-theme=dark] :is(.details-top p,.guide-line p,.guide-footer){color:var(--muted);border-color:var(--border)}
:root[data-theme=dark] :is(.guide-header,.guide-number){color:var(--purple);border-color:var(--border)}
:root[data-theme=dark] .avatar.lavender{background:#39314f;color:#c4b3f2}
:root[data-theme=dark] .avatar.peach{background:#49362e;color:#edbd9e}
:root[data-theme=dark] .avatar.sage{background:#2b4037;color:#a5d1b2}
:root[data-theme=dark] .avatar.blue{background:#2c3b50;color:#adc8ef}
:root[data-theme=dark] .avatar.rose{background:#493140;color:#e8aecb}
@media(max-width:950px){.sidebar{width:210px}.home-grid{grid-template-columns:1fr}.home-daily{align-items:flex-start;flex-direction:column;gap:14px}}
@media(max-width:650px){
 .sidebar{display:none}.chat-header{min-height:64px;padding:6px 10px;gap:5px}.chat-title h1{font-size:16px;line-height:1.2;margin-top:1px}.chat-title{flex:1}#header-class-switch{max-width:calc(100vw - 152px);font-size:12px;min-height:30px}.chat-header .icon-button{width:40px;height:40px}.header-actions{gap:0;flex:none}.lesson-role{display:none}.connection-status{padding:5px 12px;font-size:10px}
 .bottom-nav{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));flex:none;background:var(--paper);border-top:1px solid var(--border);padding:4px 8px max(4px,env(safe-area-inset-bottom));gap:4px}.bottom-nav button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;position:relative;border:0;border-radius:var(--control-radius);background:transparent;color:var(--muted);min-height:48px;font-size:11px}.bottom-nav button[aria-current=page]{background:var(--lavender);color:var(--purple);font-weight:650}.bottom-nav .unread-count{position:absolute;top:0;left:55%;font-size:10px;min-width:18px;line-height:18px;padding:0 4px;background:var(--purple);color:var(--paper)}.exercise-active .bottom-nav,.chat-keyboard-open .bottom-nav{display:none}
 .message-scroll{padding:0 12px 10px}.message-content{max-width:calc(100% - 37px)}.message>.avatar{width:28px;height:28px;border-radius:var(--control-radius)}.message-bubble{padding:8px 11px}.message-meta{font-size:11px}.conversation-intro{padding:10px 0}.conversation-intro p{font-size:10px}.composer-area{padding:0 10px 8px}.composer-hint{display:none}
 .dictionary-view,.lessons-view,.files-view,.home-view{padding:14px 12px}.dictionary-overview-heading{flex-direction:row;align-items:flex-start;margin-bottom:12px}.dictionary-overview-heading h2,.dictionary-heading h2,.files-heading h2,.home-heading h2{font-size:19px}.dictionary-overview-heading p{font-size:12px;max-width:260px}.dictionary-overview-actions #dictionary-home-create{width:40px;min-height:40px}.dictionary-overview-tools{flex-wrap:nowrap;gap:5px}.dictionary-overview-tools input{height:42px;font-size:16px;padding:8px}.dictionary-sort-label{flex-basis:122px}.dictionary-sort-label select{font-size:12px;height:42px}.dictionary-overview-tools #dictionary-home-refresh{width:36px;min-width:36px}.dictionary-scope-tabs>button{min-height:38px;font-size:13px;padding:6px}.dictionary-scope-count{font-size:11px}.dictionary-view .dictionary-scope-hint{font-size:11px}.dictionary-set-card{padding:12px}.dictionary-set-card-top h4{font-size:16px}.dictionary-mode{min-height:62px;padding:8px}.dictionary-mode-title{font-size:13px}.dictionary-mode-counts{font-size:11px}.dictionary-view .dictionary-set-card-meta{margin-bottom:7px}.dictionary-resume{padding:10px;align-items:center}.dictionary-resume .button{font-size:12px;padding:8px}.dictionary-view .dictionary-resume p{font-size:12px}.dictionary-view .dictionary-word-main p{font-size:13px}
 .practice-heading{margin-bottom:8px;flex-wrap:wrap}.practice-heading>div{min-width:0;flex:1}.practice-picker summary{min-height:40px;display:flex;align-items:center}.dictionary-view .hanzi-practice{padding:0;background:transparent;border:0}.dictionary-view.is-practicing .dictionary-main{padding:0}.dictionary-view .hanzi-word-context{font-size:18px;margin-bottom:6px}.dictionary-view .hanzi-character-heading{margin-bottom:6px}.hanzi-character-heading #hanzi-current-char{font-size:30px}.hanzi-board{max-width:min(360px,calc(100dvh - 310px));min-width:160px;width:100%;margin-inline:auto;border-radius:var(--radius)}.dictionary-view .hanzi-actions .button{padding:7px 8px;min-height:38px;font-size:12px}.hanzi-pagination{margin-top:8px;bottom:-14px;padding:8px 0 max(8px,env(safe-area-inset-bottom));background:var(--bg)}.hanzi-pagination .button{font-size:12px;padding:8px;min-width:0}.hanzi-pagination .field-hint{font-size:11px;white-space:nowrap;width:auto;order:0}.hanzi-result-metrics{gap:8px}.hanzi-result-metrics dd{font-size:17px}.hanzi-result-explanation{font-size:11px}.home-daily{padding:14px}.home-grid{gap:12px}.home-card{padding:14px}.daily-counts{gap:24px}.theme-setting select,.word-info-modal input,.word-info-modal select{font-size:16px}.modal h2{font-size:22px}
}
@media(max-height:600px) and (max-width:650px){.hanzi-board{max-width:min(240px,calc(100dvh - 240px));min-width:140px}.practice-heading>div>span{display:none}.dictionary-view .hanzi-character-heading{display:none}.hanzi-pagination{bottom:-14px}.home-daily{padding:12px}}

:root[data-theme=dark] #practice-picker-content{background:var(--paper)}
@media(max-width:650px){
 .dictionary-view.is-practicing #hanzi-practice-view{padding-bottom:68px}
 .dictionary-view .hanzi-pagination{position:fixed;left:12px;right:12px;bottom:0;max-width:640px;margin:0 auto;padding:10px 0 max(10px,env(safe-area-inset-bottom));background:var(--bg);flex-wrap:nowrap}
 .dictionary-view .hanzi-board{max-width:min(360px,calc(100dvh - 365px));min-width:140px}
 .dictionary-view .practice-heading{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:8px}
 .dictionary-view .practice-heading .practice-picker{grid-column:auto}
 .dictionary-view .practice-picker>summary{font-size:0;width:40px;min-height:40px;padding:8px;text-align:center}
 .dictionary-view .practice-picker>summary:after{content:'⋯';font-size:20px}
 .dictionary-view .hanzi-character-heading>div>span{font-size:32px}
 .dictionary-view .hanzi-character-heading h3{font-size:19px}
 .dictionary-view .hanzi-character-heading p,.dictionary-view .hanzi-stroke-count{font-size:12px}
 .dictionary-view .hanzi-character-heading{min-height:42px}
}

:root[data-theme=dark] .dictionary-overview-actions #dictionary-home-create{background:var(--action);color:var(--on-action)}
:root[data-theme=dark] .sample-bubble{background:var(--paper);color:var(--ink)}
:root[data-theme=dark] :is(.story-main>p,.auth-note,.story-footer,.lesson-bilingual [lang=zh],.lesson-detail-chinese){color:var(--muted)}

/* Chat proportions share the same tokens with the live appearance preview. */
:root {
  --chat-font:14px; --chat-line:1.4; --chat-gap:8px; --chat-padding:12px;
  --chat-radius:20px; --chat-width:680px; --chat-avatar:44px; --chat-avatar-radius:12px; --chat-composer:32px;
}
#chat-content .conversation {background:var(--paper)}
#chat-content .message-scroll {padding:0 clamp(12px,2.2vw,32px) 16px;scroll-padding-block:20px}
#messages,.conversation-intro,.older-wrap,#chat-empty {max-width:1040px;margin-inline:auto}
#chat-content .conversation-intro {padding:24px 0 20px}
#chat-content .conversation-intro h2 {font-size:14px;margin-top:8px}
#chat-content .conversation-intro p {font-size:12px;line-height:1.6}
#chat-content .date-separator {gap:16px;margin:16px 0 24px;color:var(--muted);font-size:11px}
#chat-content .date-separator::before,#chat-content .date-separator::after {background:var(--border);opacity:.6}
:is(#messages,.appearance-preview) .message {gap:10px;margin-bottom:var(--chat-gap)}
:is(#messages,.appearance-preview) .message-content {min-width:0;width:auto;max-width:min(var(--chat-width),calc(100% - var(--chat-avatar) - 10px))}
:is(#messages,.appearance-preview) .message>.avatar {flex:0 0 var(--chat-avatar);width:var(--chat-avatar);height:var(--chat-avatar);border-radius:var(--chat-avatar-radius);font-size:calc(var(--chat-avatar) * .36);margin-top:2px}
:is(#messages,.appearance-preview) .message-meta {min-height:20px;gap:8px;margin:0 2px 5px;font-size:12px;line-height:1.5}
:is(#messages,.appearance-preview) .message-time {font-size:10px;font-variant-numeric:tabular-nums}
:is(#messages,.appearance-preview) .message-bubble {padding:var(--chat-padding) calc(var(--chat-padding) + 3px);border-radius:var(--chat-radius);font-size:var(--chat-font);line-height:var(--chat-line);background:var(--surface)}
:is(#messages,.appearance-preview) .own .message-bubble {background:var(--lavender);border-radius:var(--chat-radius)}
:is(#messages,.appearance-preview) .original-text {line-height:var(--chat-line)}
:is(#messages,.appearance-preview) .original-text[lang=zh] {font-size:calc(var(--chat-font) + 4px);line-height:var(--chat-line);letter-spacing:.3px}
:is(#messages,.appearance-preview) .pinyin {font-size:calc(var(--chat-font) - 2px);line-height:var(--chat-line);margin-bottom:4px;color:var(--muted)}
:is(#messages,.appearance-preview) .translation-text {font-size:calc(var(--chat-font) - 1px);line-height:var(--chat-line);color:var(--muted)}
:is(#messages,.appearance-preview) .translation-text[lang=zh] {font-size:calc(var(--chat-font) + 2px);color:var(--purple)}
#messages .translation-lines,.appearance-preview-translation {padding-top:8px;margin-top:8px;border-top:1px solid var(--border)}
#messages .message.grouped {margin-top:calc(6px - var(--chat-gap))}
#messages .message.grouped .message-meta {min-height:16px;margin-bottom:3px}
#chat-content .composer-area {padding:10px clamp(10px,2.2vw,32px) 16px;background:var(--paper)}
#chat-content .composer-area>:is(.composer,.composer-context) {max-width:1040px;margin-inline:auto}
#chat-content .composer.composer-compact,.appearance-preview .composer {padding:7px;border-radius:var(--chat-composer);background:var(--paper);border:1px solid var(--border);box-shadow:0 4px 20px #28293706}
#chat-content .composer:focus-within {border-color:var(--purple);box-shadow:0 0 0 3px color-mix(in srgb,var(--purple) 10%,transparent)}
#chat-content .composer.composer-compact textarea {font-size:max(16px,var(--chat-font))}
#chat-content .composer-action {border-radius:clamp(6px,calc(var(--chat-composer) - 7px),50px)}
.chat-options-appearance {display:flex;align-items:center;gap:11px;width:100%;min-height:44px;padding:10px 12px;margin-top:4px;border:0;border-top:1px solid var(--border);border-radius:0;background:transparent;color:var(--ink);font-size:13px;text-align:left}
.chat-options-appearance .icon {width:18px;height:18px;color:var(--purple)}
.chat-options-appearance:hover {background:var(--lavender)}
.appearance-menu-arrow {margin-left:auto;font-size:20px;color:var(--muted)}
.account-appearance {margin:0 0 12px;justify-content:center}

/* The preview uses the real chat dimensions; only the parameter panel scrolls. */
.modal.appearance-modal {width:min(840px,calc(100% - 32px));max-width:840px;max-height:calc(100dvh - 32px);padding:0;border:1px solid var(--border);border-radius:18px;background:var(--paper);color:var(--ink);overflow:auto;scrollbar-width:thin}
.modal.appearance-modal[open] {display:flex;flex-direction:column}
.appearance-heading {flex:none;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border)}
.appearance-heading h2 {font-size:19px;line-height:1.3;margin:0;outline:none}
.appearance-heading .icon-button {width:32px;height:32px;flex:none;border-radius:9px;background:var(--surface)}
.appearance-heading .icon {width:18px;height:18px}
.appearance-layout {display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);align-items:stretch;min-height:0}
.appearance-preview-panel {position:static;padding:14px;min-width:0}
.appearance-preview-label {display:flex;align-items:center;gap:6px;margin-bottom:10px;color:var(--muted);font-size:10px;font-weight:550}
.appearance-preview-label>span:last-child {margin-left:auto;font-size:9px;font-weight:400}
.appearance-live-dot {width:5px;height:5px;border-radius:50%;background:var(--success)}
.appearance-preview {padding:12px 10px 10px;border:1px solid var(--border);border-radius:12px;background:var(--paper);overflow:hidden}
.appearance-preview .message-meta {flex-wrap:wrap;gap:5px;min-height:16px;font-size:10px;margin-bottom:3px}
.appearance-preview .message-time {font-size:9px}
.appearance-preview .message.own .message-author {display:inline}
.appearance-preview .composer {display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:12px;min-height:42px;padding:5px}
.appearance-preview-composer>span:first-child {padding-left:7px;color:var(--muted);font-size:var(--chat-font)}
.appearance-preview-send {display:grid;place-items:center;width:32px;height:32px;flex:none;border-radius:clamp(6px,calc(var(--chat-composer) - 7px),50px);background:var(--purple);color:var(--paper)}
.appearance-preview-send .icon {width:16px;height:16px}
.appearance-preview-note {margin:9px 0 0;color:var(--muted);font-size:10px;line-height:1.5}
.appearance-controls {min-width:0;min-height:0;max-height:360px;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;padding:14px;border-left:1px solid var(--border);background:var(--surface)}
.appearance-section {min-width:0;padding:0;border:0;margin:0 0 12px}
.appearance-section:last-child {margin-bottom:0}
.appearance-section legend {padding:0;margin-bottom:6px;color:var(--ink);font-size:11px;font-weight:650}
.appearance-presets,.appearance-themes {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px}
.appearance-presets button,.appearance-themes button {min-width:0;min-height:30px;padding:5px 6px;border:1px solid var(--border);border-radius:8px;background:var(--paper);color:var(--muted);font-size:11px}
.appearance-presets button {display:flex;align-items:center;justify-content:center;gap:6px}
.appearance-presets button[aria-pressed=true],.appearance-themes button[aria-pressed=true] {border-color:var(--purple);background:var(--lavender);color:var(--purple);box-shadow:inset 0 0 0 1px var(--purple)}
.appearance-presets button:hover,.appearance-themes button:hover {border-color:var(--purple);color:var(--purple)}
.density-icon {display:flex;flex-direction:column;justify-content:center;gap:3px;height:16px;width:14px;flex:none}
.density-icon i {height:1px;width:100%;border-radius:2px;background:currentColor}
.density-compact {gap:2px}.density-spacious {gap:5px}
.appearance-sliders {display:grid;gap:0}
.appearance-range {display:grid;grid-template-columns:minmax(0,1fr) minmax(70px,28%) 44px;align-items:center;gap:8px;min-height:30px;margin:0;font-size:12px;font-weight:400}
.appearance-range>span {line-height:1.35}
.appearance-range output {font-size:11px;font-variant-numeric:tabular-nums;color:var(--purple);background:var(--paper);padding:3px 4px;border:1px solid var(--border);border-radius:5px;text-align:center;white-space:nowrap}
.appearance-modal .appearance-range input[type=range] {display:block;width:100%;height:24px;margin:0;padding:0;border:0;border-radius:0;background:transparent;accent-color:var(--purple);cursor:pointer;touch-action:pan-y}
.appearance-modal button:focus-visible,.appearance-range input:focus-visible,.appearance-controls:focus-visible {outline:2px solid var(--purple);outline-offset:3px}
.appearance-footer {flex:none;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 14px;border-top:1px solid var(--border);background:var(--paper);z-index:1}
.appearance-footer .button {min-height:32px;padding:6px 12px;font-size:11px;border-radius:9px}
.appearance-footer .primary {min-width:80px}
@media(max-width:650px) {
  #chat-content .conversation-intro {padding:18px 0 14px}
  #chat-content .conversation-intro p {font-size:11px}
  #chat-content .composer-area {padding-top:6px;padding-bottom:max(10px,env(safe-area-inset-bottom))}
  .appearance-layout {grid-template-columns:minmax(0,1fr)}
}

/* Keep message sizes intact and give the controls the remaining mobile height. */
@media(max-width:650px), (max-height:600px) and (max-width:950px) {
  .modal.appearance-modal {width:calc(100% - 16px);max-height:calc(100dvh - 16px);border-radius:14px}
  .appearance-heading {padding:5px 10px}
  .appearance-heading h2 {font-size:16px}
  .appearance-modal .appearance-heading .icon-button {width:30px;height:30px;min-height:30px}
  .appearance-layout {grid-template-rows:auto minmax(72px,1fr)}
  .appearance-preview-panel {padding:6px 10px}
  .appearance-preview-label {font-size:10px;margin-bottom:5px}
  .appearance-preview {padding:8px}
  #chat-appearance-dialog .appearance-preview .message-meta {min-height:14px;gap:5px;margin-bottom:3px}
  #chat-appearance-dialog .appearance-preview .composer {margin-top:8px;min-height:42px;padding:5px}
  .appearance-preview-note {font-size:10px;line-height:1.3;margin-top:4px}
  .appearance-controls {border-left:0;border-top:1px solid var(--border);padding:8px 10px;max-height:220px}
  .appearance-controls>.appearance-section:not(.appearance-sliders) {position:relative;padding-left:54px;margin-bottom:6px}
  .appearance-controls>.appearance-section:not(.appearance-sliders)>legend {position:absolute;top:0;left:0;line-height:30px;margin:0;font-size:10px}
  .appearance-presets button,.appearance-themes button {min-height:30px;padding:3px;font-size:10px;gap:4px}
  .density-icon {width:12px}
  .appearance-sliders>legend {position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
  .appearance-range {min-height:30px;gap:6px;grid-template-columns:minmax(0,1fr) minmax(68px,26%) 43px;font-size:11px}
  .appearance-modal .appearance-range input[type=range] {height:30px}
  .appearance-range output {padding:2px 3px}
  .appearance-footer {padding:5px 10px max(5px,env(safe-area-inset-bottom))}
  .appearance-footer .button {min-height:30px;padding:4px 10px;font-size:11px}
}
@media(min-width:500px) and (max-width:950px) and (max-height:600px) {
  .appearance-layout {grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);grid-template-rows:minmax(0,1fr)}
  .appearance-controls {border-top:0;border-left:1px solid var(--border);max-height:calc(100dvh - 100px)}
}

.word-info-hints{margin:10px 0;padding:12px;border:1px solid var(--border);border-radius:var(--control-radius);background:var(--lavender)}
.word-info-hints>div{display:flex;flex-wrap:wrap;gap:6px}.word-info-hints p{overflow-wrap:anywhere}
#word-info-refresh{margin-bottom:10px}#lesson-upload-notice{margin:0 0 12px}#lesson-draft-status{margin:0 0 8px}#lesson-discard-draft{margin-bottom:10px}

/* Content tabs and training actions have separate roles. */
.dictionary-tabs{display:flex;gap:6px}.dictionary-tabs button{flex:0 1 auto;min-width:96px;min-height:44px}.dictionary-heading-actions{gap:8px}.dictionary-heading-actions .button{min-height:44px}.dictionary-heading-actions>#dictionary-train-set{flex:0 1 auto}
@media(max-width:650px){
 .dictionary-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.dictionary-tabs button{min-width:0;font-size:13px}
 .dictionary-heading-actions{display:flex;flex-wrap:nowrap}.dictionary-heading-actions>#dictionary-cards-tab,.dictionary-heading-actions>#dictionary-train-set{flex:1;min-width:0;font-size:13px}
 .bottom-nav{padding-inline:4px;gap:2px}.bottom-nav button{min-width:0;font-size:10px;min-height:48px}
 #class-picker-dialog{width:calc(100vw - 24px);max-width:420px;max-height:85dvh;overflow:auto;padding:20px}
 .account-modal{max-height:90dvh;overflow:auto}
}

.dictionary-view{overflow-anchor:none}

/* Profile settings: one scroll surface, persistent heading, clear groups. */
:root {--tab-focus-radius:10px}
.avatar {position:relative;isolation:isolate}
.avatar>img {position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:inherit;background:inherit}
.avatar-name {max-width:85%;font-size:.9em;line-height:1.15;text-align:center;overflow-wrap:anywhere}
.avatar-name-long {font-size:.5em}
.bottom-nav button {border-radius:var(--tab-focus-radius)}
.account-modal {width:calc(100% - 48px);max-width:800px;max-height:calc(100dvh - 64px);padding:0;border-radius:24px;background:var(--bg);overflow:hidden}
.account-modal[open] {display:flex;flex-direction:column}
.account-header {display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:24px 28px 20px;background:var(--paper);border-bottom:1px solid var(--border);flex:none}
.account-header .eyebrow {font-size:10px;letter-spacing:1.6px;color:var(--muted)}
.account-modal .account-header h2 {font-size:26px;line-height:1.25;margin:8px 0 0;letter-spacing:-.8px;outline:0}
.account-header>.icon-button {flex:none;background:var(--surface);border-radius:50%;width:36px;height:36px}
.account-body {padding:24px 28px 28px;overflow:auto;min-height:0;overscroll-behavior:contain;scrollbar-width:thin;scroll-padding-block:20px}
.account-profile {padding:22px 24px;background:var(--paper);border:1px solid var(--border);border-radius:18px;margin-bottom:18px;position:relative}
.account-profile-top {display:flex;align-items:center;gap:18px;min-width:0}
.account-profile #account-avatar {width:76px;height:76px;flex:none;font-size:30px;border-radius:24px;box-shadow:0 0 0 4px var(--paper),0 0 0 5px var(--border)}
.account-profile-info {min-width:0}
.account-modal .account-profile h3 {font-size:24px;margin:0 0 4px;line-height:1.3;overflow-wrap:anywhere;letter-spacing:-.5px}
.account-profile #account-identity {font-size:13px;color:var(--muted);line-height:1.5;overflow-wrap:anywhere}
.account-profile-label {display:inline-block;margin-top:8px;font-size:11px;color:var(--purple);background:var(--lavender);border-radius:20px;padding:4px 9px}
.account-profile-form {min-width:0;margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}
.account-profile-fields {display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.account-profile-fields label {min-width:0;margin-bottom:12px}
.account-profile-form input {min-width:0;font-size:16px;background:var(--surface)}
.account-profile-form .field-hint {margin-bottom:12px}
.account-avatar-tools {display:flex;align-items:center;gap:8px;margin:20px 0 8px;flex-wrap:wrap}
.account-modal .button {min-height:40px;font-size:12px;padding:9px 13px;gap:7px;border-radius:10px}
.account-modal .icon {width:19px;height:19px;flex:none}
.account-avatar-hint {font-size:11px;color:var(--muted);line-height:1.6}
.avatar-colors {display:flex;align-items:center;gap:14px;border:0;border-top:1px solid var(--border);padding:14px 0 0;margin-top:16px;min-width:0}
.avatar-colors legend {float:left;font-size:11px;color:var(--muted);padding:0;line-height:1.6;flex:1}
.avatar-colors>div {display:flex;gap:10px;flex:none}
.avatar-color {width:30px;height:30px;border:2px solid var(--paper);border-radius:50%;position:relative;cursor:pointer;box-shadow:0 0 0 1px var(--border)}
.avatar-color[aria-pressed=true] {box-shadow:0 0 0 2px var(--purple)}
.avatar-color[aria-pressed=true]::after {content:'✓';font-size:16px;position:absolute;inset:0;display:grid;place-items:center;color:inherit;font-weight:700}
.avatar-colors:disabled {opacity:.45}
.avatar-colors:disabled button {cursor:default}
.avatar-pending {margin-top:14px;padding:12px;border-radius:12px;background:var(--lavender);color:var(--purple);font-size:12px;line-height:1.6}
.avatar-pending>div {display:flex;gap:6px;margin-top:8px}
.account-feedback {font-size:12px;color:var(--success);line-height:1.6;overflow-wrap:anywhere}
.account-feedback:empty {display:none}
.account-feedback:not(:empty) {margin-top:12px}
.account-feedback.is-error {color:#b34e58}
.account-settings-grid {display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
.account-section {min-width:0;border:1px solid var(--border);border-radius:18px;padding:20px;background:var(--paper)}
.account-modal .account-section h3 {display:flex;align-items:center;gap:9px;font-size:15px;font-weight:650;margin:0 0 6px}
.account-section h3>.icon {color:var(--purple);width:18px;height:18px}
.account-section-hint {font-size:12px;color:var(--muted);line-height:1.6;margin-bottom:16px}
.account-modal .account-local-note {font-size:11px;line-height:1.65;color:var(--muted);margin:14px 0 0}
.account-modal .theme-setting {display:flex;align-items:center;justify-content:space-between;gap:10px;margin:0;padding:0 0 14px;font-size:12px;font-weight:500}
.account-modal .theme-setting select {min-width:0;max-width:172px;width:auto;min-height:38px;font-size:12px;border-radius:9px;padding:8px;background:var(--surface)}
.account-settings-link {display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;padding:14px 0;text-align:left;border:0;border-top:1px solid var(--border);background:transparent;color:var(--ink);cursor:pointer}
.account-settings-link b {display:block;font-size:12px;font-weight:500}
.account-settings-link small {display:block;margin-top:5px;font-size:11px;color:var(--muted);line-height:1.5}
.account-settings-link>span:last-child {font-size:24px;color:var(--muted)}
.account-settings-link:hover b {color:var(--purple)}
.tab-radius-setting {border-top:1px solid var(--border);padding-top:14px}
.tab-radius-setting>label {display:flex;justify-content:space-between;align-items:flex-start;gap:8px;margin:0 0 9px;font-size:12px;line-height:1.5;font-weight:500}
.tab-radius-setting output {white-space:nowrap;color:var(--purple);font-size:11px;min-width:40px;text-align:right;font-variant-numeric:tabular-nums}
.account-modal input[type=range] {width:100%;height:26px;min-height:0;padding:0;margin:0;accent-color:var(--purple);border:0;cursor:pointer;background:transparent;box-shadow:none}
.tab-radius-labels {display:flex;justify-content:space-between;color:var(--muted);font-size:10px;margin-top:3px}
#tab-focus-hint {color:var(--muted);font-size:11px;line-height:1.6;margin:12px 0}
.tab-focus-preview {display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:3px;border:1px solid var(--border);border-radius:12px;padding:5px;background:var(--surface)}
.tab-focus-preview>span {display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;min-width:0;min-height:51px;font-size:8px;color:var(--muted);border-radius:var(--tab-focus-radius)}
.tab-focus-preview .icon {width:17px;height:17px}
.tab-focus-preview .is-active {background:var(--lavender);color:var(--purple);font-weight:650}
.account-modal .notification-settings {margin:0;padding:20px;border:1px solid var(--border)}
.account-modal .notification-settings #push-status {font-size:12px;line-height:1.65;margin:0 0 14px}
.account-modal .setting-checkbox {display:flex;align-items:center;justify-content:space-between;gap:14px;border-top:1px solid var(--border);padding-top:16px;margin-top:16px}
.account-modal .setting-checkbox>span {min-width:0}
.account-modal .setting-checkbox b {display:block;font-size:12px;font-weight:500;line-height:1.5}
.account-modal .setting-checkbox small {display:block;font-size:11px;color:var(--muted);line-height:1.5;margin-top:4px;overflow-wrap:anywhere}
.account-modal .setting-checkbox input {appearance:none;flex:none;width:36px;height:22px;min-height:0;margin:0;border:0;border-radius:20px;background:var(--border);position:relative;cursor:pointer;transition:background .15s}
.account-modal .setting-checkbox input::before {content:'';position:absolute;width:16px;height:16px;top:3px;left:3px;background:#fff;border-radius:50%;box-shadow:0 1px 3px #0002;transition:transform .15s}
.account-modal .setting-checkbox input:checked {background:var(--purple)}
.account-modal .setting-checkbox input:checked::before {transform:translateX(14px)}
.account-modal .setting-checkbox input:disabled {opacity:.4;cursor:default}
.account-modal .account-security #account-email-status {font-size:12px;line-height:1.7;color:var(--muted);margin:12px 0;overflow-wrap:anywhere}
.account-modal .account-security #account-email-status.email-verified {color:var(--success)}
.account-security summary {display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer;list-style:none;color:var(--purple);font-size:12px;line-height:1.5;min-height:40px;border-top:1px solid var(--border);padding-top:10px}
.account-security summary::-webkit-details-marker {display:none}
.account-security summary>span {font-size:20px}
.account-security details[open] summary>span {transform:rotate(45deg)}
.account-security form {padding-top:10px}
.account-modal .account-security label {font-size:12px;margin-bottom:14px;gap:6px}
.account-modal .account-security input:not([hidden]) {min-width:0;width:100%;font-size:14px;background:var(--surface);border-radius:9px}
.account-about-mark {display:grid;place-items:center;width:20px;height:20px;border-radius:6px;color:var(--purple);background:var(--lavender);font-size:14px;font-weight:500}
.account-modal .account-about .build-version {color:var(--purple);text-align:left;display:block;padding:0;font-size:12px;min-height:34px}
.account-modal .account-about .pwa-install {margin-top:14px}
.account-modal .account-logout {margin-top:16px;border-top:1px solid var(--border);border-radius:0;padding-top:16px;justify-content:flex-start;color:#aa4f5d}
.account-modal :is(button,input,select,summary):focus-visible {outline:3px solid var(--purple);outline-offset:3px}
:root[data-theme=dark] .account-modal {background:var(--bg)}
:root[data-theme=dark] .account-feedback.is-error,:root[data-theme=dark] .account-modal .account-logout {color:#f3a8b3}
@media(max-width:650px) {
 .account-modal {width:100%;max-width:100%;height:100dvh;max-height:100dvh;margin:0;border:0;border-radius:0}
 .account-header {padding:max(18px,env(safe-area-inset-top)) 18px 17px}
 .account-header .eyebrow {font-size:9px;letter-spacing:1.3px}
 .account-modal .account-header h2 {font-size:24px;margin-top:7px}
 .account-header>.icon-button {width:36px;height:36px}
 .account-body {padding:18px 16px max(24px,env(safe-area-inset-bottom))}
 .account-profile {padding:20px;margin-bottom:14px}
 .account-profile-fields {grid-template-columns:minmax(0,1fr);gap:0}
 .account-profile #account-avatar {width:64px;height:64px;font-size:27px;border-radius:21px}
 .account-modal .account-profile h3 {font-size:22px}
 .account-settings-grid {grid-template-columns:1fr;gap:14px}
 .account-section,.account-modal .notification-settings {padding:20px}
 .account-modal .theme-setting select {font-size:16px;max-width:190px}
 .account-modal .button {min-height:44px}
 .account-avatar-tools {gap:4px}
 .account-avatar-tools .button {padding-inline:10px}
 .avatar-colors {flex-wrap:wrap;gap:12px}
 .avatar-colors>div {gap:12px}
 .avatar-color {width:32px;height:32px}
 .tab-focus-preview>span {font-size:10px;min-height:54px}
 .tab-focus-preview .icon {width:19px;height:19px}
 .account-modal .account-security input:not([hidden]) {font-size:16px}
 .account-modal .account-logout {min-height:48px}
}
@media(prefers-reduced-motion:reduce) {.account-modal .setting-checkbox input,.account-modal .setting-checkbox input::before {transition:none}}
@media(min-width:651px) {
 .account-profile {display:grid;grid-template-columns:minmax(0,1fr) minmax(0,280px);column-gap:24px;row-gap:8px}
 .account-profile-top {grid-column:1;grid-row:1 / span 2}
 .account-avatar-tools {grid-column:2;margin:0}
 .account-avatar-hint {grid-column:2}
 .avatar-colors,.avatar-pending,.account-profile-form,.account-profile>.account-feedback {grid-column:1 / -1}
 .avatar-colors {margin-top:8px}
 .account-design {grid-column:1;grid-row:1 / span 2}
 .account-security {grid-column:2;grid-row:2}
 .account-about {grid-column:1 / -1}
}

.account-modal #email-feedback {color:var(--muted)}
/* Word lookup keeps the editable fields close to the message context. */
.modal.word-info-modal {width:min(400px,calc(100vw - 24px));padding:18px 20px;max-height:calc(100dvh - 24px);border-radius:16px;}
.word-info-modal .modal-top {margin:0 0 8px;gap:12px;align-items:flex-start;}
.word-info-modal .modal-top>div {min-width:0;}
.word-info-modal .eyebrow {font-size:10px;letter-spacing:1px;}
.word-info-modal #word-info-title {font-size:28px;line-height:1.25;color:var(--purple);margin:4px 0 0;overflow-wrap:anywhere;}
.word-info-modal #word-info-context {font-size:12px;line-height:1.45;margin:0 0 12px;overflow-wrap:anywhere;}
#word-info-form {display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 12px;}
#word-info-form label {min-width:0;gap:5px;margin:0;font-size:12px;}
#word-info-form input,#word-info-form select {width:100%;min-width:0;height:40px;min-height:40px;padding:8px 10px;border-radius:8px;font-size:16px;}
#word-info-form .word-info-full,#word-info-refresh,#word-info-hints,#word-info-status,#word-info-save {grid-column:1/-1;}
#word-info-form #word-info-refresh {justify-self:start;min-height:36px;padding:4px 0;margin:0;font-size:12px;color:var(--muted);}
#word-info-form #word-info-refresh:hover {color:var(--purple);background:transparent;}
#word-info-form #word-info-status {font-size:12px;line-height:1.45;margin:0;}
#word-info-status:empty {display:none;}
#word-info-form .word-info-hints {margin:0;padding:10px;}
#word-info-form #word-info-save {min-height:42px;padding:9px 12px;font-size:14px;}

/* Account progress and classroom mastery. Wide result tables scroll within the dialog. */
.learning-status-bar {display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;margin-bottom:8px;}
.learning-status-bar:has(>#class-learning-open[hidden]) {display:none;}
.learning-status-bar #class-learning-open {min-height:32px;padding:4px 8px;background:transparent;color:var(--muted);font-size:12px;}
.learning-status-bar #class-learning-open:hover {background:var(--surface);color:var(--ink);}
#learning-sync-status {display:inline-flex;align-items:center;justify-content:center;width:30px;min-width:30px;height:30px;padding:7px;border:0;border-radius:8px;background:transparent;color:var(--muted);line-height:1;vertical-align:middle;}
#learning-sync-status:empty {visibility:hidden;}
.learning-status-bar #class-learning-open {margin-left:auto;}
#learning-sync-status .learning-sync-icon {display:block;width:16px;height:16px;opacity:.8;}
#learning-sync-status:hover,#learning-sync-status[aria-expanded="true"] {background:var(--surface);color:var(--ink);}
#learning-sync-status:focus-visible {outline:2px solid var(--purple);outline-offset:2px;}
#learning-sync-status[data-sync-status="syncing"] {color:var(--purple);}
#learning-sync-status[data-sync-status="warning"] {color:#b36d25;}
[data-theme="dark"] #learning-sync-status[data-sync-status="warning"] {color:#e1ac65;}
#learning-sync-status[data-sync-status="syncing"] .learning-sync-icon {animation:sync-status-spin 1.4s linear infinite;}
@keyframes sync-status-spin {to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){#learning-sync-status .learning-sync-icon{animation:none}}
.modal.learning-stats-modal {width:min(860px,calc(100vw - 24px));max-width:860px;padding:18px 20px;max-height:calc(100dvh - 24px);}
.learning-stats-modal .modal-top {margin:0 0 8px;gap:12px;align-items:flex-start;}
.learning-stats-modal .eyebrow {font-size:10px;letter-spacing:1px;}
.learning-stats-modal h2 {font-size:21px;margin:4px 0 0;overflow-wrap:anywhere;}
.learning-stats-explanation {margin:0 0 10px;font-size:12px;color:var(--muted);}
.learning-stats-explanation summary {cursor:pointer;}
.learning-stats-explanation p {margin:6px 0 0;}
.learning-stats-controls {display:flex;align-items:end;gap:8px;}
.learning-stats-controls label {display:grid;gap:4px;flex:1;min-width:0;margin:0;font-size:12px;color:var(--muted);}
.learning-stats-controls select {width:100%;min-height:38px;padding:6px 10px;border:1px solid var(--border);border-radius:var(--control-radius);background:var(--paper);color:var(--ink);font:inherit;}
.learning-stats-controls .button {min-height:38px;padding:7px 12px;font-size:12px;}
#class-learning-feedback {margin:8px 0;font-size:11px;line-height:1.5;color:var(--muted);}
.learning-stats-scroll-hint {display:none;}
.learning-stats-set {padding:12px 0;border-top:1px solid var(--border);}
.learning-stats-set:last-child {padding-bottom:0;}
.learning-stats-set h3 {margin:0 0 3px;font-size:15px;overflow-wrap:anywhere;}
.learning-stats-set>p {margin:0;font-size:12px;line-height:1.5;color:var(--muted);}
.learning-stats-totals {display:flex;flex-wrap:wrap;gap:6px 16px;margin:8px 0 10px;font-size:12px;color:var(--muted);}
.learning-stats-totals span {display:flex;align-items:baseline;gap:5px;}
.learning-stats-totals b {font-size:16px;color:var(--ink);}
.learning-stats-table-wrap {width:100%;overflow-x:auto;}
.learning-stats-table {width:100%;min-width:560px;border-collapse:collapse;font-size:12px;line-height:1.4;font-variant-numeric:tabular-nums;}
.learning-stats-table th,.learning-stats-table td {text-align:left;padding:8px;border-bottom:1px solid var(--border);vertical-align:top;}
.learning-stats-table thead th {font-size:11px;font-weight:500;color:var(--muted);}
.learning-stats-table th:first-child {min-width:110px;max-width:180px;overflow-wrap:anywhere;}
.learning-stats-table small {display:block;margin-top:2px;color:var(--muted);font-size:11px;}
.learning-stats-table progress {display:block;width:64px;height:5px;margin-top:4px;accent-color:var(--purple);}
@media(max-width:650px) {
 .modal.learning-stats-modal {padding:16px;}
 .learning-stats-controls select {font-size:16px;}
 .learning-stats-totals {gap:4px 12px;}
 .learning-stats-set>.learning-stats-scroll-hint {display:block;font-size:11px;margin:0 0 4px;}
}

/* Status details open from the header icon without taking space in the page. */
.header-sync{display:flex;align-items:center;flex:none}
.sync-status-popover{position:fixed;z-index:70;width:320px;max-width:calc(100vw - 24px);max-height:calc(100dvh - 24px);overflow:auto;padding:16px;border:1px solid var(--border);border-radius:12px;background:var(--paper);color:var(--ink);box-shadow:0 12px 32px #0002;text-align:left;font-size:13px;line-height:1.5}
.sync-status-popover[hidden]{display:none}.sync-status-popover h2{margin:0 0 10px;font-size:14px;line-height:1.4}.sync-status-popover h3{margin:12px 0 4px;font-size:12px;font-weight:600}.sync-status-popover p{margin:0 0 10px;color:var(--muted);overflow-wrap:anywhere}.sync-status-popover .button{min-height:36px;padding:6px 12px;font-size:12px}
.lesson-materials li{flex-wrap:wrap}.lesson-materials [data-offline-file]{font-size:11px}.lesson-materials li>div{min-width:0;overflow-wrap:anywhere}
@media(max-width:650px){.lesson-materials [data-offline-file]{margin-left:auto}}