@charset "UTF-8";
:root {
  color-scheme: light;
  --bg:#f7f8fc;
  --paper:#ffffff;
  --paper-alt:#f9faff;
  --ink:#1c2340;
  --muted:#788198;
  --line:#e8eaf3;
  --accent:#5869ed;
  --accent-dark:#4557d7;
  --accent-soft:#e9edff;
  --purple:#9076f9;
  --green:#1d9b6b;
  --green-soft:#e7f8ef;
  --red:#de6069;
  --red-soft:#fff0f0;
  --shadow:0 8px 28px rgba(27,36,74,.045);
}
:root[data-theme="dark"] {
  color-scheme:dark;
  --bg:#111624;
  --paper:#1b2232;
  --paper-alt:#222a3d;
  --ink:#f0f3ff;
  --muted:#a5aec4;
  --line:#333c50;
  --accent:#91a0ff;
  --accent-dark:#7386fa;
  --accent-soft:#30395b;
  --purple:#aa9bf9;
  --green:#70dbaf;
  --green-soft:#1c463b;
  --red:#ff9ba1;
  --red-soft:#4c2938;
  --shadow:0 8px 30px rgba(0,0,0,.13);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;min-width:320px;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Arial,sans-serif;line-height:1.45;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit}
button{cursor:pointer;-webkit-tap-highlight-color:transparent}
button:disabled{opacity:.45;cursor:not-allowed}
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--purple);outline-offset:3px}
a{color:inherit}
h1,h2,h3,p{margin:0}
h1{font-size:clamp(24px,4.8vw,35px);line-height:1.18;letter-spacing:-.035em;font-weight:780}
h2{font-size:21px;line-height:1.25;letter-spacing:-.025em}
h3{font-size:17px;line-height:1.25;letter-spacing:-.01em}
small{font-size:12px}
.muted{color:var(--muted)}
.shell{min-height:100dvh}
.topbar{position:sticky;top:0;height:65px;z-index:30;background:var(--paper);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 20px}
.topbar-brand{display:flex;align-items:center;gap:8px;color:var(--accent);font-size:21px;font-weight:830;letter-spacing:-.055em}
.topbar-current{font-size:13px;font-weight:670;color:var(--muted)}
.page{padding:24px 18px calc(115px + env(safe-area-inset-bottom));max-width:1140px;margin:auto;min-height:calc(100dvh - 66px)}
.page-head{display:flex;align-items:end;justify-content:space-between;margin-bottom:22px}
.eyebrow{font-size:10px;font-weight:820;letter-spacing:.15em;color:var(--accent);margin-bottom:6px}
.subtitle{font-size:14px;color:var(--muted);margin-top:7px}
.sidebar{display:none}
.bottom-nav{position:fixed;bottom:0;left:0;right:0;z-index:40;display:flex;justify-content:space-around;gap:1px;background:var(--paper);border-top:1px solid var(--line);padding:8px 6px calc(9px + env(safe-area-inset-bottom));box-shadow:0 -8px 24px rgba(29,38,71,.035)}
.nav-item{appearance:none;border:0;background:transparent;color:var(--muted);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;border-radius:13px;padding:6px 4px;min-width:0;flex:1;font-size:10px;line-height:1.2;font-weight:650}
.nav-item.active{color:var(--accent);background:var(--accent-soft)}
.nav-item span{white-space:nowrap}
.btn,.icon-btn,.text-btn,.theme-btn,.tiny-btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;text-align:center;border:none;transition:background .18s,transform .15s,color .18s}
.btn:active,.icon-btn:active,.mode-choice:active,.nav-item:active{transform:scale(.975)}
.btn{padding:13px 18px;border-radius:14px;min-height:48px;font-size:14px;font-weight:760;white-space:normal}
.btn svg{flex-shrink:0}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark)}
.btn-secondary{background:var(--accent-soft);color:var(--accent)}
.btn-secondary:hover{filter:brightness(.96)}
.btn-white{background:white;color:#3343b4;box-shadow:0 8px 24px rgba(27,27,87,.09)}
.btn-sm{min-height:39px;padding:9px 12px;border-radius:11px;font-size:13px}
.btn-wide{width:100%}
.btn-danger-outline{color:var(--red);background:var(--red-soft)}
.text-btn{padding:10px 4px;background:none;color:var(--accent);font-size:13px;font-weight:750}
.text-btn:hover{text-decoration:underline}
.icon-btn{background:var(--paper-alt);border:1px solid var(--line);color:var(--muted);border-radius:12px;width:42px;height:42px;flex-shrink:0}
.icon-btn:hover{color:var(--accent);background:var(--accent-soft)}
.icon-btn.danger:hover{color:var(--red);background:var(--red-soft)}
.tiny-btn{width:26px;height:24px;border:0;background:transparent;color:var(--muted);border-radius:6px}
.tiny-btn:hover{background:var(--accent-soft);color:var(--accent)}
.welcome-card{position:relative;isolation:isolate;overflow:hidden;border-radius:26px;padding:26px 24px 27px;background:linear-gradient(122deg,#526af0 0%,#755fdd 65%,#a584f6 100%);color:white;box-shadow:0 15px 36px rgba(84,102,222,.18)}
.welcome-card:before{content:"";position:absolute;right:-45px;top:-110px;width:255px;height:255px;border:1px solid rgba(255,255,255,.23);border-radius:50%;z-index:-1}
.welcome-card:after{content:"";position:absolute;right:18px;top:-35px;width:145px;height:145px;border:1px solid rgba(255,255,255,.18);border-radius:50%;z-index:-1}
.welcome-glow{position:absolute;width:350px;height:350px;right:-180px;bottom:-255px;border-radius:50%;background:rgba(255,255,255,.12);filter:blur(12px);z-index:-1}
.welcome-kicker{display:inline-flex;align-items:center;gap:7px;font-size:10px;font-weight:780;letter-spacing:.13em;color:#e7e7ff;margin-bottom:13px}
.welcome-card h2{font-size:clamp(25px,6vw,37px);line-height:1.13;letter-spacing:-.035em;font-weight:850}
.welcome-card p{font-size:13px;color:#eef0ff;line-height:1.6;margin:13px 0 22px;max-width:300px}
.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;margin:19px 0 29px}
.stat-tile{background:var(--paper);border:1px solid var(--line);padding:16px;border-radius:18px;box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:start;min-height:130px}
.stat-icon{width:32px;height:32px;border-radius:10px;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.stat-tile strong{font-size:28px;letter-spacing:-.045em;line-height:1;font-weight:800}
.stat-tile span{font-size:11px;color:var(--muted);margin-top:8px;line-height:1.3}
.stat-tile small{color:var(--muted);margin-top:2px}
.stat-grid:not(.stat-grid-4) .stat-tile:last-child:nth-child(odd){grid-column:1/-1}
.section-title{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:26px 0 14px}
.section-title.tight{margin-top:21px}
.section-title h2{font-size:20px}
.section-title h3{font-size:17px}
.section-title>.muted{font-size:12px}
.deck-grid{display:grid;grid-template-columns:1fr;gap:14px}
.deck-card{background:var(--paper);border:1px solid var(--line);border-radius:21px;box-shadow:var(--shadow);padding:20px;min-width:0}
.deck-top{display:flex;align-items:start;justify-content:space-between;margin-bottom:17px}
.deck-icon,.deck-summary-icon{height:46px;width:46px;display:flex;align-items:center;justify-content:center;border-radius:14px;background:var(--accent-soft);color:var(--accent)}
.chip{display:inline-flex;align-items:center;background:var(--paper-alt);border:1px solid var(--line);border-radius:100px;padding:5px 11px;font-size:11px;font-weight:700;color:var(--muted)}
.deck-card h3{font-size:19px;letter-spacing:-.025em;line-height:1.35;margin:0 0 4px;overflow-wrap:anywhere}
.deck-card>.muted{font-size:12px}
.progress-label{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);margin-top:21px;margin-bottom:8px}
.progress-label b{color:var(--accent)}
.progress-track{height:7px;border-radius:20px;background:var(--accent-soft);overflow:hidden}
.progress-fill{height:100%;border-radius:20px;background:linear-gradient(90deg,var(--accent),var(--purple));transition:width .3s ease}
.deck-card-actions{display:flex;gap:9px;margin-top:20px;justify-content:space-between}
.deck-card-actions .btn{flex:1}
.tip-strip{display:flex;align-items:center;gap:13px;border-radius:16px;background:var(--accent-soft);padding:16px 17px;color:var(--accent);font-size:12px;line-height:1.5;margin:28px 0}
.tip-strip svg{flex-shrink:0}
.tip-strip b{font-weight:800}
.empty{background:var(--paper);border:1px dashed var(--line);border-radius:23px;text-align:center;padding:35px 19px;margin:10px 0 22px}
.empty-illustration{height:65px;width:65px;border-radius:20px;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;color:var(--accent);margin:0 auto 17px}
.empty h3{margin:0 0 8px;font-size:18px}
.empty p{color:var(--muted);font-size:13px;max-width:290px;margin:0 auto 20px}
.section-actions{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 22px}
.section-actions .btn{flex:1;min-width:140px}
.breadcrumb{margin:-7px 0 16px}
.deck-summary{display:flex;align-items:center;gap:15px;padding:19px 17px;background:var(--paper);border:1px solid var(--line);border-radius:20px;margin-bottom:15px;box-shadow:var(--shadow)}
.deck-summary-icon{width:54px;height:54px;flex-shrink:0}
.deck-summary .grow{flex:1;min-width:0}
.deck-summary h2{font-size:20px;overflow-wrap:anywhere;margin:7px 0 5px}
.deck-summary p{color:var(--muted);font-size:12px}
.deck-summary .icon-btn{align-self:start}
.card-list{display:flex;flex-direction:column;gap:9px}
.vocab-row{display:flex;align-items:center;gap:10px;padding:15px 12px;background:var(--paper);border:1px solid var(--line);border-radius:16px;min-width:0}
.vocab-index{border-radius:9px;min-width:29px;height:29px;display:flex;justify-content:center;align-items:center;background:var(--accent-soft);color:var(--accent);font-size:12px;font-weight:800}
.vocab-text{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px;overflow-wrap:anywhere}
.vocab-text-button{background:transparent;border:0;text-align:left;color:var(--ink);padding:8px 2px;margin:-8px -2px;min-height:48px;border-radius:8px;cursor:pointer}
.vocab-text-button:hover strong{color:var(--accent)}
.vocab-text strong{font-size:14px}
.vocab-text span{font-size:13px;color:var(--muted)}
.vocab-text small{font-size:11px;color:var(--muted);opacity:.8}
.vocab-tools{display:flex;align-items:center;gap:4px;flex-shrink:0}
.vocab-tools .icon-btn{width:35px;height:38px;border:0;background:transparent}
.mini-move{display:flex;flex-direction:column;gap:1px}
.import-export{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0}
.import-export .btn{flex:1;min-width:145px}
.file-btn{cursor:pointer;position:relative}
.form-card,.setup-card,.chart-card{background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow)}
.scan-intro{display:flex;gap:13px;align-items:center;margin-bottom:17px}
.scan-intro-icon{width:58px;height:58px;border-radius:18px;background:var(--accent-soft);color:var(--accent);display:flex;justify-content:center;align-items:center;flex-shrink:0}
.scan-intro h2{font-size:19px}
.scan-intro p{color:var(--muted);font-size:13px;margin-top:5px}
.field-label{display:block;font-size:12px;font-weight:760;color:var(--ink);margin:16px 0 7px}
.field{appearance:none;width:100%;background:var(--paper-alt);color:var(--ink);border:1px solid var(--line);border-radius:13px;min-height:49px;padding:12px 13px;font-size:16px;outline:0;transition:border-color .15s,box-shadow .15s}
.field:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}
textarea.field{resize:vertical;min-height:75px}
.form-pair{display:grid;grid-template-columns:1fr;gap:2px 14px}
.form-pair .field-label{margin-top:15px}
.selected-deck{margin-top:10px;font-size:13px;color:var(--muted)}
.selected-deck b{color:var(--ink)}
.upload-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}
.upload-option{cursor:pointer;background:var(--paper-alt);border:2px dashed #cbd2f4;border-radius:17px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:5px;min-width:0;min-height:153px;padding:13px 7px;color:var(--accent);transition:background .18s,border-color .18s}
.upload-option:hover{background:var(--accent-soft);border-color:var(--accent)}
.upload-option strong{font-size:13px;color:var(--ink)}
.upload-option span{font-size:11px;color:var(--muted)}
.photo-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:10px;margin-top:15px}
.photo-thumb{border-radius:13px;overflow:hidden;position:relative;background:var(--paper-alt);border:1px solid var(--line);height:116px}
.photo-thumb img{height:86px;width:100%;object-fit:cover}
.photo-thumb span{display:block;font-size:9px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:4px 7px}
.remove-photo{position:absolute;top:5px;right:5px;border:none;border-radius:50%;color:#242742;background:#fff;width:25px;height:25px;display:flex;align-items:center;justify-content:center}
.scan-bottom{margin-top:23px}
.scan-bottom .demo-link{width:100%;margin-top:12px;color:var(--muted)}
.hint{display:flex;align-items:center;gap:8px;color:var(--green);font-size:12px;margin-bottom:13px}
.warning-box{display:flex;align-items:start;gap:11px;background:var(--red-soft);color:var(--ink);padding:15px;border-radius:15px;margin:17px 0;line-height:1.5}
.warning-box svg{color:var(--red);flex-shrink:0}
.warning-box strong{font-size:13px}
.warning-box p{color:var(--muted);font-size:12px;margin-top:4px}
.warning-box code{font-size:11px;overflow-wrap:anywhere}
.spinner{width:25px;height:25px;display:inline-block;border:3px solid var(--accent-soft);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}
.spinner.small{width:18px;height:18px;border-color:rgba(255,255,255,.3);border-top-color:white}
@keyframes spin{to{transform:rotate(360deg)}}
.review-banner{background:var(--green-soft);color:var(--ink);display:flex;gap:12px;border-radius:17px;padding:17px;margin-bottom:18px}
.review-banner>div:first-child{color:var(--green);flex-shrink:0}
.review-banner strong{font-size:16px}
.review-banner p{font-size:12px;color:var(--muted);margin-top:4px}
.demo-banner{background:var(--accent-soft)}
.demo-banner>div:first-child{color:var(--accent)}
.pending-list{display:flex;flex-direction:column;gap:14px}
.pending-card{background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:20px;padding:17px}
.pending-card.needs-check{border-color:#efbd8b}
.pending-top{display:flex;align-items:center;gap:9px;margin-bottom:2px}
.card-no{font-size:12px;font-weight:800}
.pending-actions{display:flex;align-items:center;gap:4px;margin-left:auto}
.pending-actions .icon-btn{width:33px;height:34px;background:transparent;border:none}
.uncertain-chip,.okay-chip{border-radius:20px;padding:5px 8px;font-weight:750;font-size:10px;display:inline-flex;align-items:center;gap:4px}
.uncertain-chip{color:#bd7d32;background:#fff1dd}
.okay-chip{color:var(--green);background:var(--green-soft)}
.secondary-fields .field-label{font-size:11px;color:var(--muted)}
.verify-line{margin-top:15px;display:flex;align-items:center;gap:10px;border:1px solid #efbd8b;border-radius:12px;padding:10px 12px;background:var(--paper-alt);font-size:12px;cursor:pointer}
.verify-line input{width:20px;height:20px;accent-color:var(--accent);flex-shrink:0}
.verify-line span{display:flex;flex-direction:column;gap:3px}
.verify-line small{color:var(--muted)}
.review-footer{position:sticky;bottom:calc(72px + env(safe-area-inset-bottom));display:flex;gap:9px;justify-content:space-between;align-items:center;margin:21px -5px 0;padding:10px 5px;background:var(--bg)}
.review-footer .btn{flex:1;padding:10px}
.setup-card>h2{margin:0 0 6px}
.setup-card>h3{margin:25px 0 12px}
.mode-options{display:grid;grid-template-columns:1fr;gap:10px;margin-top:23px}
.mode-choice{min-height:72px;width:100%;display:flex;align-items:center;text-align:left;gap:13px;padding:14px;background:var(--paper-alt);color:var(--muted);border:1.5px solid var(--line);border-radius:15px}
.mode-choice.selected{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}
.mode-choice>span{display:flex;flex-direction:column;gap:3px;flex:1}
.mode-choice b{color:var(--ink);font-size:14px}
.mode-choice small{color:var(--muted);font-size:12px}
.segmented{display:flex;gap:5px;border-radius:14px;background:var(--paper-alt);padding:5px}
.segmented button{background:transparent;color:var(--muted);font-weight:700;font-size:11px;border:0;border-radius:10px;flex:1;min-height:42px;padding:8px 6px}
.segmented button.selected{background:var(--paper);box-shadow:0 2px 9px rgba(24,30,69,.08);color:var(--accent)}
.setup-card>.btn{margin-top:27px}
.study-wrap{max-width:690px;margin:auto}
.study-toolbar{display:flex;justify-content:space-between;align-items:center;gap:10px}
.study-toolbar>span{font-size:13px;font-weight:780;color:var(--muted)}
.study-toolbar>.icon-btn{background:transparent}
.study-progress{margin:12px 0 22px}
.flash-perspective{perspective:1400px}
.flashcard{display:block;position:relative;width:100%;height:clamp(280px,55vh,395px);transform-style:preserve-3d;transition:transform .65s cubic-bezier(.2,.68,.15,1);border:0;background:transparent;padding:0;cursor:pointer;text-align:center;color:var(--ink)}
.flashcard.flipped{transform:rotateY(180deg)}
.flashface{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:27px;border-radius:26px;background:var(--paper);border:1px solid var(--line);box-shadow:0 19px 40px rgba(40,51,101,.10);backface-visibility:hidden;-webkit-backface-visibility:hidden}
.flashfront:after,.flashback:after{content:"";position:absolute;inset:14px;border-radius:18px;border:1px solid var(--line);pointer-events:none}
.flashback{transform:rotateY(180deg);background:linear-gradient(145deg,var(--paper),var(--accent-soft));border-color:var(--accent-soft)}
.flashface strong{font-size:clamp(27px,7vw,46px);font-weight:780;line-height:1.2;letter-spacing:-.035em;overflow-wrap:anywhere;max-width:100%}
.study-caption{font-size:11px;letter-spacing:.13em;font-weight:850;color:var(--accent);margin-bottom:24px}
.card-tap{position:absolute;bottom:28px;display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
.study-subtools{display:flex;justify-content:space-between;align-items:center;margin:14px 0}
.study-buttons{display:flex;gap:11px;margin-top:18px}
.study-buttons .btn{flex:1;min-width:0;padding:15px 8px}
.btn-wrong{background:var(--red-soft);color:var(--red)}
.btn-right{background:var(--green-soft);color:var(--green)}
.study-hint{color:var(--muted);font-size:12px;text-align:center;margin:16px auto}
.write-panel{min-height:330px;background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:30px 21px;text-align:center}
.study-word{font-size:clamp(26px,7vw,38px);font-weight:820;letter-spacing:-.035em;overflow-wrap:anywhere;margin-bottom:10px}
.write-form{text-align:left;margin-top:24px}
.write-input{font-size:17px}
.write-form .btn{margin-top:20px}
.answer-feedback{margin-top:24px;padding:15px;border-radius:14px;display:flex;flex-direction:column;gap:5px}
.answer-feedback.right{background:var(--green-soft);color:var(--green)}
.answer-feedback.wrong{background:var(--red-soft);color:var(--red)}
.answer-feedback b{font-size:17px}
.answer-feedback span{font-size:13px}
.finish-card{background:var(--paper);border:1px solid var(--line);border-radius:24px;max-width:580px;margin:25px auto;text-align:center;padding:40px 20px;display:flex;flex-direction:column;align-items:center;gap:13px}
.finish-emoji{font-size:63px}
.finish-card h2{font-size:31px}
.finish-card p{color:var(--muted);font-size:14px}
.finish-card .btn{width:100%;max-width:310px}
.finish-stats{display:flex;gap:14px;width:100%;max-width:310px;margin:12px 0}
.finish-stats div{flex:1;border:1px solid var(--line);border-radius:14px;padding:12px;display:flex;flex-direction:column}
.finish-stats b{font-size:27px;color:var(--accent)}
.finish-stats span{font-size:11px;color:var(--muted)}
.search-input-wrap{display:flex;align-items:center;gap:11px;background:var(--paper);border:1px solid var(--line);border-radius:15px;padding:0 15px;color:var(--muted)}
.search-input{border:0;background:transparent;color:var(--ink);width:100%;height:55px;outline:none;font-size:16px}
.search-input:focus{outline:none}
.result-count{margin:20px 0 12px;font-size:12px}
.chart-card{padding:23px;margin-top:23px}
.chart-card .section-title{margin:0}
.chart-card .section-title h2{font-size:17px}
.bar-chart{height:260px;display:flex;align-items:end;justify-content:space-around;gap:8px;margin-top:22px;padding:0 2px}
.bar-col{display:flex;align-items:center;flex-direction:column;gap:8px;flex:1;height:100%;min-width:0}
.bar-col>span{font-size:11px;color:var(--muted);margin-top:auto}
.bar-track{height:210px;max-width:43px;width:100%;border-radius:10px;background:var(--accent-soft);position:relative;overflow:hidden}
.bar-fill{position:absolute;bottom:0;left:0;right:0;min-height:3px;background:linear-gradient(0deg,var(--accent),var(--purple));border-radius:10px;transition:height .4s}
.bar-col small{font-size:11px;color:var(--muted)}
.modal-backdrop{position:fixed;inset:0;z-index:100;background:rgba(10,15,35,.6);display:flex;align-items:end;justify-content:center}
.modal{width:100%;max-width:560px;max-height:92dvh;overflow-y:auto;overscroll-behavior:contain;background:var(--paper);border-radius:25px 25px 0 0;padding:24px 22px calc(24px + env(safe-area-inset-bottom));box-shadow:0 -14px 50px rgba(0,0,0,.16)}
.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}
.modal-head h2{font-size:23px}
.modal .field-label{margin-top:17px}
.modal .btn-wide{margin-top:27px}
#toasts{position:fixed;z-index:120;top:75px;left:16px;right:16px;display:flex;flex-direction:column;align-items:center;gap:8px;pointer-events:none}
.toast{color:var(--ink);background:var(--paper);border:1px solid var(--line);box-shadow:0 12px 40px rgba(26,37,68,.13);border-radius:13px;padding:12px 15px;font-size:13px;font-weight:650;text-align:center;max-width:520px}
.toast.success{border-color:var(--green);color:var(--green)}
.toast.error{border-color:var(--red);color:var(--red)}
.loading-screen{min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:22px;text-align:center;color:var(--muted)}
.loading-screen h1{color:var(--ink)}
@media(min-width:600px){
  .page{padding:33px 30px 110px}
  .stat-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .stat-grid:not(.stat-grid-4) .stat-tile:last-child:nth-child(odd){grid-column:auto}
  .deck-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .form-pair{grid-template-columns:repeat(2,minmax(0,1fr))}
  .review-footer{bottom:calc(75px + env(safe-area-inset-bottom))}
}
@media(min-width:1000px){
  .shell{display:grid;grid-template-columns:238px minmax(0,1fr)}
  .sidebar{display:flex;position:sticky;top:0;max-height:100dvh;height:100dvh;flex-direction:column;background:var(--paper);border-right:1px solid var(--line);padding:29px 17px 21px}
  .brand{display:flex;gap:11px;align-items:center;color:var(--accent);font-size:26px;font-weight:850;letter-spacing:-.05em;padding:0 13px 36px}
  .brand>span{display:flex;flex-direction:column;line-height:1}
  .brand small{color:var(--muted);font-weight:500;letter-spacing:.02em;margin-top:4px}
  .side-nav{display:flex;flex-direction:column;gap:7px}
  .sidebar .nav-item{flex-direction:row;justify-content:flex-start;gap:13px;padding:13px 14px;text-align:left;min-height:50px;font-size:14px;flex:auto}
  .sidebar-bottom{margin-top:auto}
  .sidebar-tip{background:var(--accent-soft);border-radius:15px;padding:15px;display:flex;gap:9px;align-items:start;font-size:12px;font-weight:700;color:var(--accent);margin-bottom:13px}
  .theme-btn{background:transparent;color:var(--muted);border:none;padding:10px 14px;width:100%;justify-content:flex-start;font-size:13px;font-weight:750}
  .main-frame{min-width:0}
  .topbar{height:72px;padding:0 38px}
  .topbar-brand{display:none}
  .topbar-current{font-size:14px}
  .page{padding:38px 40px 80px}
  .page-head{margin-bottom:27px}
  .bottom-nav{display:none}
  .stat-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
  .stat-grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
  .stat-tile{min-height:148px;padding:19px}
  .welcome-card{padding:38px 38px 36px}
  .welcome-card h2{font-size:37px}
  .welcome-card p{font-size:15px;max-width:450px}
  .deck-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .review-footer{bottom:0}
  .modal-backdrop{align-items:center;padding:30px}
  .modal{border-radius:24px;padding:29px 31px;max-height:90dvh}
}
@media(min-width:1450px){
  .deck-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(max-width:380px){
  .page{padding-left:13px;padding-right:13px}
  .pending-card{padding:13px}
  .nav-item{font-size:9px}
  .vocab-row{gap:4px;padding:11px 8px}
  .vocab-tools{gap:0}
  .vocab-tools .icon-btn{width:28px}
  .mini-move .tiny-btn{width:23px}
  .study-buttons .btn{font-size:12px}
  .welcome-card{padding:22px 18px}
  .review-footer .btn{font-size:12px}
  .stat-tile{padding:13px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}

/* Sicherung der lokalen Handy-Daten */
.phone-save-box{
  padding:18px;margin:18px 0 22px;border:1px solid var(--line);border-radius:20px;
  background:var(--paper);box-shadow:var(--shadow);
}
.phone-save-box strong{display:flex;align-items:center;gap:10px;font-size:15px;line-height:1.4}
.phone-save-box strong svg{flex-shrink:0;color:var(--accent)}
.phone-save-box p{margin:9px 0 14px;color:var(--muted);font-size:13px;line-height:1.6}
.phone-save-box .section-actions{display:flex;gap:10px;flex-wrap:wrap;margin:0}
.phone-save-box .btn{min-height:44px}
@media(max-width:400px){
  .phone-save-box .section-actions>*{width:100%;justify-content:center}
}