.pwa-banner-overlay{z-index:1000;background:#000000b3;justify-content:center;align-items:flex-end;display:flex;position:fixed;inset:0}.pwa-banner{-webkit-backdrop-filter:blur(40px)saturate(200%);background:var(--glass-bg);border:1px solid var(--glass-border);width:100%;max-width:540px;padding-bottom:env(safe-area-inset-bottom,16px);animation:slideUp var(--spring-duration,.45s) var(--spring-easing,cubic-bezier(.34, 1.56, .64, 1));border-radius:24px 24px 0 0}@supports not ((-webkit-backdrop-filter:blur(1px)) or (backdrop-filter:blur(1px))){.pwa-banner{background:#161618f7}}.pwa-banner__handle{background:#3a3a3c;border-radius:2px;width:36px;height:4px;margin:12px auto 0}.pwa-banner__content{padding:16px 20px 4px}.pwa-banner__icon{color:#ffffffd9;justify-content:center;align-items:center;margin-bottom:12px;line-height:1;display:flex}.pwa-banner__title{color:#fff;margin-bottom:8px;font-size:17px;font-weight:600}.pwa-banner__description{color:#8e8e93;margin-bottom:12px;font-size:14px;line-height:1.5}.pwa-banner__benefits{justify-content:center;gap:8px;margin:0 0 14px;padding:0;list-style:none;display:flex}.pwa-banner__benefit{color:#ebebf5cc;text-align:center;background:#2c2c2e;border-radius:10px;flex-direction:column;flex:1;align-items:center;gap:4px;padding:8px 10px 6px;font-size:12px;line-height:1.3;display:flex}.pwa-banner__benefit-icon{color:#ffffffd9;justify-content:center;align-items:center;display:flex}.pwa-banner__steps{counter-reset:pwa-step;flex-direction:column;gap:10px;margin:0 0 8px;padding:0;list-style:none;display:flex}.pwa-banner__steps li{counter-increment:pwa-step;color:#ebebf5cc;align-items:flex-start;gap:10px;font-size:14px;line-height:1.45;display:flex}.pwa-banner__steps li:before{content:counter(pwa-step);color:#fff;background:#0a84ff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;min-width:22px;height:22px;margin-top:1px;font-size:12px;font-weight:700;display:flex}.pwa-banner__step-icon{vertical-align:middle;color:#0a84ff;display:inline-flex}.pwa-banner__actions{flex-direction:column;gap:8px;padding:12px 20px 16px;display:flex}.pwa-banner__btn{cursor:pointer;text-align:center;border:none;border-radius:12px;width:100%;padding:13px 20px;font-size:15px;font-weight:600;transition:background .15s,opacity .15s}.pwa-banner__btn--primary{color:#fff;background:#0a84ff}.pwa-banner__btn--primary:hover{background:#007aff}.pwa-banner__btn--primary:active{opacity:.85}.pwa-banner__btn--secondary{color:#fff;background:#2c2c2e}.pwa-banner__btn--secondary:hover{background:#3a3a3c}.pwa-banner__btn--secondary:active{opacity:.85}@media (width>=768px){.pwa-banner-overlay{align-items:center}.pwa-banner{border-radius:24px;width:calc(100% - 40px);max-width:440px;padding-bottom:16px}.pwa-banner__actions{flex-direction:row-reverse}.pwa-banner__btn{flex:1}}.index-app{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;background:#000;max-width:480px;min-height:100vh;margin:0 auto}.index-app .header{z-index:100;-webkit-backdrop-filter:blur(40px)saturate(180%);background:var(--glass-bg);border-bottom:1px solid var(--glass-border);contain:layout style;padding-top:calc(20px + env(safe-area-inset-top));padding-bottom:16px;padding-left:calc(20px + env(safe-area-inset-left));padding-right:calc(20px + env(safe-area-inset-right));text-align:center;position:sticky;top:0}.header--scrolled{box-shadow:0 4px 24px #0009}body.level-a2 .header{background-color:var(--tint-a2)}body.level-b1 .header{background-color:var(--tint-b1)}body.level-b2 .header{background-color:var(--tint-b2)}.header h1{letter-spacing:-.5px;margin-bottom:5px;font-size:28px;font-weight:700}.header p{color:#999;padding:0 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#e066b333}:root{--c-nom-rgb:0,122,255;--c-akk-rgb:255,159,10;--c-dat-rgb:48,209,88;--c-gen-rgb:191,90,242;--c-haben:#ff9f0a;--c-sein:#30d158;--c-praesens:#00c7be;--c-praeteritum:#e8b84b;--c-perfekt:#5dade2;--c-plusquamperfekt:#ff6b81;--c-futur:#5eead4;--c-zustand:#5dade2;--c-konj:#00c7be;--c-passiv:#e8b84b;--c-modal:#ff6b6b;--c-sep:#ff6b81;--c-sep-rgb:255,107,129;--c-neutral:#5dade2}@keyframes modal-slide-up{0%{opacity:0;transform:translateY(24px)scale(.97)}to{opacity:1;transform:translateY(0)scale(1)}}.grammar-modal{-webkit-backdrop-filter:blur(40px)saturate(180%);background:var(--glass-bg,#1c1c1e8c);border:1px solid var(--glass-border,#ffffff1f);box-shadow:var(--shadow-glass,0 8px 32px #00000073, 0 1px 0 #ffffff0f inset);border-radius:var(--radius-glass,20px);word-break:break-word;width:100%;max-width:440px;max-height:88vh;animation:modal-slide-up var(--spring-duration,.45s) var(--spring-easing,cubic-bezier(.34, 1.56, .64, 1)) both;overflow:hidden auto}@supports not 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1.6vw,1.625rem);font-weight:600;line-height:1.25;display:-webkit-box;overflow:hidden}.header-stats{flex-shrink:0;gap:8px;font-size:14px;display:flex}.stat{background:var(--bg-elevated);border-radius:var(--radius-sm);justify-content:center;align-items:center;gap:4px;padding:6px 12px;display:flex}.grammar-btn,.share-btn{background:var(--glass-bg-thin);-webkit-backdrop-filter:blur(var(--glass-blur-thin)) saturate(var(--glass-saturate-thin));border:1px solid #ffffff26;border-color:var(--glass-edge);backface-visibility:hidden;color:var(--text-primary);border-radius:var(--radius-sm);cursor:pointer;transition:background .15s, transform .3s var(--spring-easing);min-width:var(--touch-target);min-height:var(--touch-target);flex-shrink:0;justify-content:center;align-items:center;padding:8px 10px;display:flex;transform:translateZ(0);box-shadow:inset 0 0 8px #ffffff0d}.grammar-btn:hover,.share-btn:hover{background:#ffffff2e}.grammar-btn:active{-webkit-backdrop-filter:blur(var(--glass-blur-pressed)) saturate(var(--glass-saturate));background:var(--glass-bg-pressed);transform:translateZ(0)scale(.96)}.fav-btn{background:var(--bg-elevated);color:var(--text-muted);border-radius:var(--radius-sm);cursor:pointer;min-width:var(--touch-target);min-height:var(--touch-target);border:none;flex-shrink:0;justify-content:center;align-items:center;padding:8px 10px;font-size:18px;line-height:1;transition:color .2s,background .2s;display:flex}.fav-btn:hover{color:#e066b3;background:#e066b31f}.fav-btn.active{color:#e066b3;background:#e066b326}body.level-a2{--theme-primary:#ffd60a}body.level-b1{--theme-primary:#00c7be}body.level-b2{--theme-primary:#ff2d55}.quiz-content{padding:var(--space-lg);flex-direction:column;min-height:calc(100vh - 200px);display:flex}.question-section{-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));background:var(--glass-bg);border:1px solid var(--glass-border);border-color:var(--glass-edge);border-radius:var(--radius-glass);box-shadow:var(--shadow-glass);padding:var(--space-lg);margin-bottom:var(--space-lg);text-align:center}.question-text{font-size:clamp(1.25rem,1.05rem + 1vw,1.625rem);font-weight:600;line-height:1.35}.answer-area{-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));background:var(--glass-bg);border:1px solid var(--glass-border);border-color:var(--glass-edge);border-radius:var(--radius-glass);box-shadow:var(--shadow-glass);padding:var(--space-lg);margin-bottom:var(--space-lg);min-height:100px}.selected-words{flex-wrap:wrap;gap:8px;min-height:50px;display:flex}.selected-word{color:var(--text-primary);cursor:pointer;-webkit-user-select:none;user-select:none;border:1.5px solid var(--text-primary);background:0 0;border-radius:18px;padding:12px 18px;font-size:17px;transition:opacity .15s,outline .1s;animation:.2s pop;opacity:1!important;filter:none!important;box-shadow:none!important;transform:none!important}.selected-word-nom{background:var(--c-nom,#007aff)}.selected-word-akk{background:var(--c-akk,#ff9f0a)}.selected-word-dat{background:var(--c-dat,#30d158)}.selected-word-gen{background:var(--c-gen,#bf5af2)}.selected-word-draggable{cursor:grab}.selected-word-draggable:active{cursor:grabbing}.selected-word-dragging{cursor:grabbing;opacity:.35!important;filter:none!important;box-shadow:none!important;transform:none!important}.selected-word-drag-over{outline:2.5px dashed var(--text-primary);outline-offset:3px}@keyframes pop{0%{transform:scale(.7)}to{transform:scale(1)}}.answer-placeholder{color:var(--text-faint);text-align:center;padding:15px}.word-grid{grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:20px;display:grid}.word-btn{background:var(--bg-card);border:1px solid var(--bg-border);cursor:pointer;color:var(--text-primary);text-align:center;overflow-wrap:break-word;-webkit-hyphens:auto;hyphens:auto;border-radius:16px;min-width:0;padding:18px;font-size:17px;transition:transform .1s,background .15s}.word-btn:active{background:var(--bg-elevated);transition:transform .1s;transform:scale(.94)}.word-btn:not(:active){transition:transform var(--spring-duration) var(--spring-easing)}.word-btn.used{opacity:.3;pointer-events:none}.word-btn-nom{border-color:var(--c-nom);background:color-mix(in srgb, var(--c-nom) 12%, var(--bg-card));color:var(--c-nom);-webkit-backdrop-filter:blur(8px)}.word-btn-nom:active{background:color-mix(in srgb, var(--c-nom) 22%, var(--bg-card))}.word-btn-akk{border-color:var(--c-akk);background:color-mix(in srgb, var(--c-akk) 12%, var(--bg-card));color:var(--c-akk);-webkit-backdrop-filter:blur(8px)}.word-btn-akk:active{background:color-mix(in srgb, var(--c-akk) 22%, var(--bg-card))}.word-btn-dat{border-color:var(--c-dat);background:color-mix(in srgb, var(--c-dat) 12%, var(--bg-card));color:var(--c-dat);-webkit-backdrop-filter:blur(8px)}.word-btn-dat:active{background:color-mix(in srgb, var(--c-dat) 22%, var(--bg-card))}.word-btn-gen{border-color:var(--c-gen);background:color-mix(in srgb, var(--c-gen) 12%, var(--bg-card));color:var(--c-gen);-webkit-backdrop-filter:blur(8px)}.word-btn-gen:active{background:color-mix(in srgb, var(--c-gen) 22%, var(--bg-card))}.word-btn-comma:active{background:var(--bg-elevated)}.word-btn-comma.used{opacity:.3;pointer-events:none}.word-btn-animate{animation:fadeInUp .2s var(--spring-easing) 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var(--spring-easing)}.feedback-panel{-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));background:var(--glass-bg);border:1px solid var(--glass-border);border-color:var(--glass-edge);border-radius:var(--radius-glass);box-shadow:var(--shadow-glass);animation:fadeInUp .3s var(--spring-easing) both;min-height:0;margin-bottom:20px;padding:20px;overflow:visible}.feedback-panel.correct{border-left:4px solid var(--border-correct);background:#34c7591f}.feedback-panel.wrong{border-left:4px solid var(--border-wrong);background:#ff3b301f}.feedback-title{margin-bottom:8px;font-size:16px;font-weight:700}.feedback-title.correct{color:var(--accent-green)}.feedback-title.wrong{color:var(--accent-red)}.feedback-text{color:var(--text-secondary);font-size:14px;line-height:1.5}.correct-answer{border-radius:var(--radius-sm);background:#ffffff0d;margin-top:12px;padding:12px}.correct-answer-label{color:var(--text-muted);margin-bottom:4px;font-size:12px}.correct-answer-text{color:var(--text-primary);white-space:normal;word-break:break-word;font-size:16px;font-weight:600;overflow:visible}.correct-answer-row{align-items:center;gap:8px;display:flex}.audio-btn{cursor:pointer;background:#ffffff1a;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:16px;transition:background .15s;display:inline-flex}.audio-btn:hover{background:#fff3}@keyframes 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(backdrop-filter:blur(1px))){.results-modal{background:#161618f7}}.results-icon{margin-bottom:15px;font-size:50px}.results-logo{object-fit:cover;border-radius:14px;width:64px;height:64px;margin-bottom:15px}.results-title{margin-bottom:10px;font-size:24px;font-weight:700}.results-score{color:var(--theme-primary,var(--accent-blue));margin:15px 0;font-size:56px;font-weight:800}.results-message{color:var(--text-muted);margin-bottom:20px;font-size:16px}.stars{justify-content:center;gap:16px;margin-bottom:25px;display:flex}.star-item{flex-direction:column;align-items:center;gap:4px;display:flex}.star-icon{font-size:36px;transition:opacity .2s}.star-label{letter-spacing:.5px;font-size:11px;font-weight:600}.star-item:first-child .star-earned .star-icon{animation:starPop .4s var(--spring-easing) 0s both}.star-item:nth-child(2) .star-earned .star-icon{animation:starPop .4s var(--spring-easing) 80ms both}.star-item:nth-child(3) .star-earned .star-icon{animation:starPop .4s var(--spring-easing) 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var(--bg-border);border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;background:0 0;width:100%;margin-top:12px;padding:10px 20px;font-size:14px;transition:border-color .15s,color .15s}.share-result-btn:hover{border-color:var(--accent-blue);color:var(--text-primary)}.share-result-btn:active{opacity:.7}.share-feedback{color:var(--accent-green);text-align:center;margin-bottom:4px;font-size:13px;animation:.2s share-fade-in}@keyframes share-fade-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}@media (width<=390px){.quiz-content{padding-left:0;padding-right:0}.header{padding-top:calc(10px + env(safe-area-inset-top));padding-bottom:10px;padding-left:calc(12px + env(safe-area-inset-left));padding-right:calc(12px + env(safe-area-inset-right));gap:8px}.back-btn{padding:6px 8px;font-size:16px}.grammar-btn{padding:6px 8px;font-size:14px}.stat{padding:4px 7px;font-size:12px}.header-stats{gap:5px}}@media (orientation:landscape) and (height<=500px){.header{padding-top:12px;padding-left:calc(20px + env(safe-area-inset-left));padding-right:calc(20px + env(safe-area-inset-right))}.quiz-content{padding-left:calc(20px + env(safe-area-inset-left));padding-right:calc(20px + env(safe-area-inset-right))}.app{padding-bottom:env(safe-area-inset-bottom)}}@media (width<=430px){.quiz-content{padding-left:0;padding-right:0}.header{padding-top:calc(12px + env(safe-area-inset-top));padding-bottom:12px;padding-left:calc(16px + env(safe-area-inset-left));padding-right:calc(16px + env(safe-area-inset-right));gap:6px}.stat{padding:5px 8px;font-size:13px}.modal-overlay{padding:0}}@media (width>=600px) and (width<=767px){.word-grid{grid-template-columns:repeat(3,1fr);gap:12px}.quiz-content{padding:20px 24px}}@media (width>=768px){:root{--app-max-width:1000px}.app{min-height:100dvh;box-shadow:none;border:none;border-radius:0;margin:0;overflow-x:hidden}.header{padding:16px 24px;padding-top:calc(16px + env(safe-area-inset-top))}.quiz-content{padding:24px}.question-section{padding:20px}.answer-area{min-height:110px;padding:20px}.selected-word{padding:13px 20px;font-size:18px}.word-grid{grid-template-columns:repeat(3,1fr);gap:12px}.word-btn{padding:16px 12px;font-size:16px}.btn{padding:18px;font-size:17px}.feedback-text{font-size:15px}.modal-overlay:has(.grammar-modal){align-items:stretch;padding:0;overflow:hidden}.grammar-modal{border-radius:0;width:100%;max-width:100%;height:100dvh;max-height:100dvh}}@media (width>=1024px) and (width<=1099px){:root{--app-max-width:100%}.header{padding:16px 28px;padding-top:calc(16px + env(safe-area-inset-top))}.quiz-content{flex-direction:column;padding:20px 28px;display:flex}.question-section{padding:20px 24px}.word-grid{grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:16px}.word-btn{padding:20px 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(width<=1099px){.index-app{max-width:980px}.lessons-grid{grid-template-columns:repeat(3,1fr);gap:14px}}@media (width>=1100px){.index-app{max-width:min(1240px,100vw - 40px)}.lessons-grid{grid-template-columns:repeat(3,1fr);gap:16px}}.settings-row-toggle{cursor:default;align-items:flex-start}.settings-row-toggle .row-text{flex:1}.ios-toggle{background:var(--bg-elevated,#3a3a3c);cursor:pointer;border:none;border-radius:16px;outline:none;flex-shrink:0;width:51px;height:31px;margin-top:2px;padding:0;transition:background .25s;position:relative}.ios-toggle:after{content:"";width:27px;height:27px;transition:transform .3s var(--spring-easing), width .2s ease;background:#fff;border-radius:16px;position:absolute;top:2px;left:2px;box-shadow:0 2px 4px #0000004d}.ios-toggle:active:after{width:31px}.ios-toggle:focus-visible{box-shadow:0 0 0 3px #0a84ff73}.ios-toggle-on{background:#34c759}.ios-toggle-on:after{transform:translate(20px)}.ios-toggle-on:active:after{transform:translate(16px)}.case-legend{background:var(--bg-elevated,#2c2c2e);border-radius:10px;flex-direction:column;gap:8px;margin:4px 16px 12px;padding:10px 12px;display:flex}.case-legend-item{align-items:baseline;gap:8px;font-size:13px;display:flex}.case-legend-dot{border-radius:50%;flex-shrink:0;width:12px;height:12px}.case-legend-dot-nom{background:var(--c-nom)}.case-legend-dot-akk{background:var(--c-akk)}.case-legend-dot-dat{background:var(--c-dat)}.case-legend-dot-gen{background:var(--c-gen)}.case-legend-name{min-width:80px;font-weight:600}.case-legend-example{color:var(--text-secondary,#98989f)}.case-legend-hint{color:var(--text-secondary,#98989f);border-top:1px solid var(--border-color,#ffffff14);flex-direction:column;gap:2px;padding-top:4px;font-size:12px;display:flex}.case-legend-sentence{white-space:nowrap;font-weight:600}.case-legend-word-nom{color:var(--c-nom)}.case-legend-word-akk{color:var(--c-akk)}.settings-row-nav{transition:transform .3s var(--spring-easing);justify-content:space-between}.settings-row-nav:active{transform:scale(.98)}.row-chevron{color:#8e8e93;flex-shrink:0;align-items:center;line-height:1;display:flex}.settings-row-disabled{opacity:.45;pointer-events:none}.settings-title-nav{justify-content:center;align-items:center;display:flex;position:relative}.settings-back-btn{color:#0a84ff;cursor:pointer;-webkit-backdrop-filter:blur(8px);background:#ffffff14;border:1px solid #ffffff1a;border-radius:20px;align-items:center;gap:2px;padding:5px 12px 5px 8px;font-size:15px;font-weight:400;line-height:1;transition:background .2s,transform .15s;display:flex;position:absolute;left:16px}.settings-back-btn:hover{background:#ffffff21}.settings-back-btn:active{transform:scale(.96)}.push-loading-indicator{flex-shrink:0;width:51px;height:31px;margin-top:2px;display:inline-block;position:relative}.push-loading-indicator:after{content:"";border:2px solid #3a3a3c;border-top-color:#8e8e93;border-radius:50%;width:18px;height:18px;margin:-9px 0 0 -9px;animation:.7s linear infinite push-spin;position:absolute;top:50%;left:50%}@keyframes push-spin{to{transform:rotate(360deg)}}.resume-subtitle{color:var(--text-muted);margin-bottom:8px;font-size:14px}.resume-percent{color:var(--text-faint);margin-bottom:28px;font-size:13px}.error-screen{background:var(--bg-app);height:100vh;color:var(--accent-red);text-align:center;flex-direction:column;justify-content:center;align-items:center;padding:20px;font-size:15px;display:flex}.error-screen__icon{margin-bottom:16px;font-size:40px}.error-screen__title{color:var(--accent-red);font-size:15px}.error-screen__detail{color:var(--text-faint);margin-top:8px;font-size:12px}.error-screen__back{color:var(--accent-blue);cursor:pointer;background:0 0;border:none;margin-top:24px;font-size:14px}.loading-screen{background:var(--bg-app);height:100vh;color:var(--text-faint);justify-content:center;align-items:center;font-size:16px;display:flex}@media 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