:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,sans-serif;color:#183c36;background:#f3f6f4;font-synthesis:none;font-size:16px}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0;border-radius:12px;background:#e9efec;color:#183c36;padding:12px 18px;font-weight:650}button:hover{filter:brightness(.96)}button:disabled{opacity:.55;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #d88a18;outline-offset:3px}h1{font-size:clamp(2rem,4vw,3rem);letter-spacing:-.055em;line-height:1.13;margin:12px 0 18px}h2{font-size:1.6rem;letter-spacing:-.035em;line-height:1.25}h3{font-size:1.1rem}p{line-height:1.65;color:#51655f}a{color:inherit;text-decoration:none}.brand{font-size:2.1rem;display:flex;align-items:center;gap:10px;font-weight:800}.brand span{font-size:1.35rem;letter-spacing:-.05em}header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 5%;background:#fff;border-bottom:1px solid #dce5df}nav{display:flex;gap:4px}nav button{background:transparent;font-size:.9rem}nav button.selected{background:#e4eee9}.avatar{font-size:.85rem}.workspace{max-width:1250px;margin:0 auto;padding:44px 32px 70px}.eyebrow{font-size:.75rem;letter-spacing:.13em;font-weight:800;color:#527167}.heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}.heading p{margin:6px 0}.wave{color:#dc912c}.streak{display:grid;grid-template-columns:auto auto;gap:5px 10px;background:#fff;padding:20px 24px;border:1px solid #e1e7e2;border-radius:18px}.streak span{grid-column:2;font-size:.8rem;color:#52685e}.learning-grid{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:26px}.subjects{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:22px}.subject{display:flex;align-items:center;text-align:left;background:#fff;border:2px solid transparent;padding:20px 16px;gap:14px}.subject.chosen{border-color:#28765a;background:#eff8f1}.subject b{display:block;font-size:1.05rem}.subject small{display:block;font-size:.8rem;font-weight:400;margin-top:6px}.subject-icon{font-size:1.6rem;background:#daf08d;padding:12px;border-radius:14px}.subject-icon.english{background:#dbe5fb}.arrow{margin-left:auto}.card{background:#fff;border:1px solid #e0e7e2;border-radius:20px;padding:28px;box-shadow:0 4px 16px #163d3503}.exercise{min-height:390px}.exercise h2{max-width:550px}.primary{background:#1c5747;color:#fff;padding:15px 22px;margin-top:12px}.wide{width:100%}.link{background:transparent;color:#24634f;padding:12px 4px;font-size:.9rem}.listen{background:#f0f4f1;font-size:.9rem;margin:0 10px 12px 0}.daily h2{font-size:1.4rem}.big-number{font-size:4rem;font-weight:750;letter-spacing:-.06em;margin:30px 0}.big-number small{display:block;font-size:.85rem;font-weight:450;letter-spacing:0;color:#5b6b63}.mini-stats{display:flex;gap:20px;font-size:.75rem;border-top:1px solid #e3e8e3;padding-top:20px}.mini-stats b{display:block;font-size:1.5rem;margin-bottom:4px}.note{background:#e6efc9;padding:24px;border-radius:18px;margin-top:20px}.note>span{font-size:1.8rem}.note p{font-size:.9rem;margin-bottom:0}.muted{color:#64776e}.small{font-size:.8rem;line-height:1.7}label{display:block;font-size:.9rem;font-weight:650;margin:16px 0}input,select{display:block;width:100%;padding:13px 14px;border:1px solid #cbd9d0;border-radius:10px;background:#fff;color:#183c36;margin-top:8px;min-height:48px}.exercise select{max-width:480px}.math-question{font-size:clamp(2.5rem,7vw,4.7rem)!important;text-align:center;padding:20px 0;letter-spacing:-.04em}.question,.math-question{user-select:none;-webkit-user-select:none;-moz-user-select:none;-webkit-touch-callout:none;-webkit-user-drag:none}.exercise-top{display:flex;align-items:center;justify-content:space-between;gap:10px}progress{width:100%;height:7px;accent-color:#397b52}.answers{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:20px 0}.answers button{font-size:1.8rem;padding:22px;background:#f4f7f4;border:1px solid #cbdacf}.feedback{padding:22px;border-radius:14px;margin-top:22px}.feedback .primary{display:block}.good{background:#e8f3da}.retry,.hint{background:#fff2d8}.hint{padding:16px;border-radius:12px;margin-top:12px}.feedback h3{margin:0}.error{background:#ffe9e5;padding:15px;border-radius:12px;color:#8e3027;margin-bottom:20px}.error button{margin-left:15px}.success{background:#e7f4df;padding:15px;border-radius:12px}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:30px 0}.metric{font-size:2.8rem}.badges{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:25px}.badge{background:#f3f4d4;font-size:2rem;min-width:190px}.toolbar{display:flex;align-items:center;gap:30px;margin:28px 0}.toolbar select{max-width:250px}.check{display:flex;align-items:center;gap:12px}.check input{width:22px;min-height:22px;margin:0}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;text-align:left}th,td{padding:17px 12px;border-bottom:1px solid #e6ece7}th{font-size:.8rem;color:#536d60}.admin-form{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}.admin-users{display:grid;gap:20px;margin-top:24px}.user-card{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}.user-card>div{grid-column:1/-1}.user-card h3{margin-top:0}.pending{display:inline-block;font-size:.8rem;background:#fff0c1;padding:7px 10px;border-radius:8px;margin-left:10px}summary{cursor:pointer;font-weight:700}footer{text-align:center;font-size:.8rem;color:#64776e;padding:24px}.auth{max-width:1160px;margin:auto;padding:45px 35px}.auth-grid{display:grid;grid-template-columns:1.2fr 1fr;align-items:center;gap:65px;margin-top:70px}.auth h1{font-size:clamp(2.6rem,5vw,4.2rem)}.intro{font-size:1.15rem}.login{padding:35px}.login h2{font-size:1.8rem}.tiles{display:flex;gap:14px;margin:36px 0}.tiles span{display:grid;gap:20px;padding:24px;background:#deecad;border-radius:18px;transform:rotate(-4deg)}.tiles span+span{background:#dce8f8;transform:rotate(4deg)}.tiles b{font-size:1.8rem}@media(max-width:900px){header{flex-wrap:wrap}nav{order:3;width:100%;overflow:auto}nav button{white-space:nowrap}.learning-grid{grid-template-columns:1fr}aside{display:grid;grid-template-columns:1fr 1fr;gap:18px}.note{margin:0}.streak{padding:14px}.auth-grid{gap:25px}.stat-grid{grid-template-columns:1fr 1fr}}@media(max-width:600px){.workspace{padding:26px 16px}.heading{align-items:flex-start}.streak{font-size:.85rem}.streak span{max-width:80px}.subjects{gap:8px}.subject{padding:14px 10px;gap:8px}.subject-icon{padding:8px;font-size:1.15rem}.subject small{font-size:.75rem}.arrow{display:none}.card{padding:21px}.subject b{font-size:.9rem}.auth{padding:25px 20px}.auth-grid{grid-template-columns:1fr;margin-top:35px}.auth-grid>section:first-child h1{font-size:2.8rem}.tiles,.auth-grid>section:first-child .muted{display:none}.auth-grid>section:first-child .intro{font-size:1rem}.toolbar{flex-direction:column;align-items:flex-start;gap:5px}.user-card,.admin-form{grid-template-columns:1fr}.avatar span{display:none}aside{grid-template-columns:1fr}.stat-grid{gap:10px}.metric{font-size:2.2rem}th,td{padding:14px 8px}.exercise-top .link{font-size:.8rem}.auth-grid{gap:15px}.heading h1{font-size:2rem}}@media(prefers-reduced-motion:no-preference){button{transition:background .15s,transform .15s}button:active{transform:translateY(1px)}}.listen{touch-action:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}.listen[aria-pressed=true]{background:#b92d32;color:#fff}math{font-family:math;font-size:inherit}.community-section{margin-top:24px}.member{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:16px 0;border-bottom:1px solid #e0e7e2}.member>span,.member>b{flex:1;min-width:130px}footer a{display:inline-block;margin-left:16px;padding:8px 0;text-decoration:underline;font-size:.9rem}.celebration{position:relative;overflow:hidden;text-align:center;padding:50px 25px}.celebration-medal{font-size:5rem}.round-metrics{display:flex;justify-content:center;gap:45px;margin:30px 0}.round-metrics b{display:block;font-size:3rem;color:#24634f}.round-metrics span{display:block}.rank-reward{background:#e6efc9;border-radius:14px;padding:15px;font-weight:750}.celebration .primary,.celebration .listen{margin:12px}.confetti{position:absolute;inset:0;pointer-events:none}.confetti i{position:absolute;top:-20px;width:9px;height:15px;background:#daaf31;animation:confetti-fall 3.5s ease-in forwards}@keyframes confetti-fall{to{transform:translateY(950px) rotate(700deg);opacity:0}}@media(prefers-reduced-motion:reduce){.confetti{display:none}}.confetti i:nth-child(1){left:0%;animation-delay:0s;background:#daf08d}.confetti i:nth-child(2){left:37%;animation-delay:.12s;background:#28765a}.confetti i:nth-child(3){left:74%;animation-delay:.24s;background:#dc912c}.confetti i:nth-child(4){left:11%;animation-delay:.36s;background:#7299e6}.confetti i:nth-child(5){left:48%;animation-delay:.48s;background:#daf08d}.confetti i:nth-child(6){left:85%;animation-delay:.6s;background:#28765a}.confetti i:nth-child(7){left:22%;animation-delay:.72s;background:#dc912c}.confetti i:nth-child(8){left:59%;animation-delay:.84s;background:#7299e6}.confetti i:nth-child(9){left:96%;animation-delay:0s;background:#daf08d}.confetti i:nth-child(10){left:33%;animation-delay:.12s;background:#28765a}.confetti i:nth-child(11){left:70%;animation-delay:.24s;background:#dc912c}.confetti i:nth-child(12){left:7%;animation-delay:.36s;background:#7299e6}.confetti i:nth-child(13){left:44%;animation-delay:.48s;background:#daf08d}.confetti i:nth-child(14){left:81%;animation-delay:.6s;background:#28765a}.confetti i:nth-child(15){left:18%;animation-delay:.72s;background:#dc912c}.confetti i:nth-child(16){left:55%;animation-delay:.84s;background:#7299e6}.confetti i:nth-child(17){left:92%;animation-delay:0s;background:#daf08d}.confetti i:nth-child(18){left:29%;animation-delay:.12s;background:#28765a}.confetti i:nth-child(19){left:66%;animation-delay:.24s;background:#dc912c}.confetti i:nth-child(20){left:3%;animation-delay:.36s;background:#7299e6}.confetti i:nth-child(21){left:40%;animation-delay:.48s;background:#daf08d}.confetti i:nth-child(22){left:77%;animation-delay:.6s;background:#28765a}.confetti i:nth-child(23){left:14%;animation-delay:.72s;background:#dc912c}.confetti i:nth-child(24){left:51%;animation-delay:.84s;background:#7299e6}.confetti i:nth-child(25){left:88%;animation-delay:0s;background:#daf08d}.confetti i:nth-child(26){left:25%;animation-delay:.12s;background:#28765a}.confetti i:nth-child(27){left:62%;animation-delay:.24s;background:#dc912c}.confetti i:nth-child(28){left:99%;animation-delay:.36s;background:#7299e6}.confetti i:nth-child(29){left:36%;animation-delay:.48s;background:#daf08d}.confetti i:nth-child(30){left:73%;animation-delay:.6s;background:#28765a}.confetti i:nth-child(31){left:10%;animation-delay:.72s;background:#dc912c}.confetti i:nth-child(32){left:47%;animation-delay:.84s;background:#7299e6}.confetti i:nth-child(33){left:84%;animation-delay:0s;background:#daf08d}.confetti i:nth-child(34){left:21%;animation-delay:.12s;background:#28765a}.confetti i:nth-child(35){left:58%;animation-delay:.24s;background:#dc912c}.confetti i:nth-child(36){left:95%;animation-delay:.36s;background:#7299e6}.confetti i:nth-child(37){left:32%;animation-delay:.48s;background:#daf08d}.confetti i:nth-child(38){left:69%;animation-delay:.6s;background:#28765a}.confetti i:nth-child(39){left:6%;animation-delay:.72s;background:#dc912c}.confetti i:nth-child(40){left:43%;animation-delay:.84s;background:#7299e6}.confetti i:nth-child(41){left:80%;animation-delay:0s;background:#daf08d}.confetti i:nth-child(42){left:17%;animation-delay:.12s;background:#28765a}.confetti i:nth-child(43){left:54%;animation-delay:.24s;background:#dc912c}.confetti i:nth-child(44){left:91%;animation-delay:.36s;background:#7299e6}.confetti i:nth-child(45){left:28%;animation-delay:.48s;background:#daf08d}.confetti i:nth-child(46){left:65%;animation-delay:.6s;background:#28765a}.confetti i:nth-child(47){left:2%;animation-delay:.72s;background:#dc912c}.confetti i:nth-child(48){left:39%;animation-delay:.84s;background:#7299e6}.exercise-active .heading,.exercise-active .subjects,.exercise-active .learning-grid>aside{display:none}.exercise-active .learning-grid{grid-template-columns:minmax(0,760px);justify-content:center}.exercise-active .workspace{padding-top:20px;padding-bottom:20px}.exercise-active .exercise{min-height:0}.exercise-active header{padding-top:10px;padding-bottom:10px}.exercise-active .math-question{margin:14px 0;padding:8px 0}.exercise-active .question{margin:18px 0;font-size:1.45rem}.exercise-active .exercise label{margin:10px 0}.exercise-active .feedback{margin-top:12px;padding:16px}.exercise-active .feedback p{margin:8px 0}.exercise-active .listen{margin-bottom:4px}.exercise-active footer{padding:6px 16px}input[type=number]{appearance:textfield;-moz-appearance:textfield}input[type=number]::-webkit-inner-spin-button,input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}@media(max-width:1024px){.exercise-active header{padding:8px 16px;gap:8px}.exercise-active header nav{display:none}.exercise-active .brand{font-size:1.6rem}.exercise-active .brand span{font-size:1.1rem}.exercise-active .avatar,.exercise-active .workspace{padding:10px 12px}.exercise-active .exercise{padding:16px;border-radius:14px}.exercise-active .exercise-top .eyebrow{margin:0}.exercise-active .exercise-top .link{padding:8px 4px}.exercise-active .math-question{font-size:2.6rem!important;margin:8px 0;padding:0}.exercise-active .question{font-size:1.2rem;margin:12px 0;line-height:1.35}.exercise-active .answers{margin:12px 0;gap:8px}.exercise-active .answers button{padding:14px;font-size:1.5rem;min-height:48px}.exercise-active .exercise .primary{margin-top:6px;padding:12px 16px;min-height:44px}.exercise-active .exercise .small{margin:4px 0;font-size:.8rem;line-height:1.35}.exercise-active .exercise input{scroll-margin-block:16px}}.mode-grid,.coach-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:16px 0}.mode-card{display:grid;gap:5px;text-align:left;border:2px solid transparent;padding:16px}.mode-card.selected,.chip.selected{border-color:#28765a;background:#e6efc9}.mode-title{font-size:1.1rem}.mode-detail,.mode-points{font-size:.9rem;font-weight:450}.chip-row{display:flex;flex-wrap:wrap;gap:8px}.chip{border:2px solid transparent;padding:10px 12px}.practice-summary{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:20px 0}.practice-summary b,.practice-summary span{display:block}.practice-summary b{font-size:1.6rem}.practice-summary span{font-size:.85rem}.practice-legend{display:flex;flex-wrap:wrap;gap:12px;margin:16px 0;font-size:.85rem}.dot{display:inline-block;width:12px;height:12px;margin-right:5px;border:1px solid #587063;border-radius:50%}.fresh{background:#f3f6f4}.week{background:#dce8f8}.partial{background:#fff0c1}.full{background:#deecad}.times-table{display:grid;grid-template-columns:22px repeat(9,minmax(0,1fr));gap:3px}.times-head{text-align:center;font-weight:700}.times-cell{border:1px solid #cbdacf;border-radius:6px;padding:6px 2px;text-align:center;font-size:.75rem}.times-label,.cell-pts{display:block}.cell-pts{font-weight:700}.slot-row{display:flex;justify-content:center;gap:2px;margin:5px 0}.slot-row i{width:5px;height:5px;border:1px solid #52685e;border-radius:50%}.slot-row .on{background:#24634f}.verb-map{display:grid;grid-template-columns:repeat(auto-fit,minmax(125px,1fr));gap:8px}.verb-chip{padding:12px;border-radius:10px;text-align:center;border:1px solid #cbdacf}.verb-en,.verb-de{display:block}.verb-en{font-weight:700}.verb-de{font-size:.85rem}.coach{border:1px solid #cbdacf;border-radius:12px;padding:16px;background:#f3f7f3}.coach h3{margin-top:0}.coach p{font-size:.9rem}.learning-coach{background:#edf2fc}.point-status{padding:12px;background:#edf4df;border-radius:10px;line-height:1.5;margin:12px 0}.point-status span{display:block;font-size:.9rem}.accuracy strong,.accuracy span,.accuracy small{display:block}.accuracy strong{font-size:1.5rem}.accuracy small{color:#64776e}.exercise>.accuracy{font-size:.8rem;margin:8px 0}.exercise>.accuracy strong{font-size:1rem}.answers button.answer-correct:disabled{background:#d5edb3;border-color:#24634f;color:#183c36;opacity:1}.answers button.answer-wrong:disabled{background:#ffe2dc;border-color:#99382c;color:#74251b;opacity:1}.strength-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:10px}.strength{padding:12px;border-left:4px solid #98a99d;background:#f4f7f4}.strength span{display:block;font-size:.85rem}.strength.weak{border-color:#bb771e}.strength.strong{border-color:#27724b}.strength progress{margin-top:10px}@media(max-width:600px){.coach-grid{grid-template-columns:1fr}.times-table{gap:2px;grid-template-columns:16px repeat(9,minmax(0,1fr))}.times-cell{font-size:.68rem}.practice-summary{gap:8px}}.mode-choices{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:16px 0}.mode-choices button{text-align:left;padding:18px}.mode-choices b,.mode-choices span{display:block}.mode-choices .chosen{outline:2px solid #23775d}.flashcards{padding:24px}.flashcard{display:block;width:100%;min-height:180px;padding:0;background:transparent;perspective:1000px}.flashcard-inner{display:grid;transform-style:preserve-3d;transition:transform .3s;min-height:180px}.flashcard.flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{grid-area:1/1;display:flex;align-items:center;justify-content:center;padding:24px;border-radius:20px;background:#e7f3ec;backface-visibility:hidden;font-size:clamp(1.5rem,5vw,2.6rem)}.flashcard-back{transform:rotateY(180deg);background:#eef0ff}.flashcards .toolbar{flex-wrap:wrap}.flashcards button{touch-action:manipulation}.flashcards select{width:100%}@media(prefers-reduced-motion:reduce){.flashcard-inner{transition:none}}@media(max-width:600px){.flashcards{padding:16px}.mode-choices button{padding:12px}.mode-choices span{font-size:.85rem}}