@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Playfair+Display:ital,wght@0,600;0,700;1,600&display=swap');
:root{--ink:#1d2b27;--muted:#77827d;--green:#315d4d;--mint:#e8f0e9;--cream:#f7f8f5;--line:#e8ebe6;--orange:#e6a66b;--white:#fff}*{box-sizing:border-box}body{margin:0;background:var(--cream);color:var(--ink);font-family:'DM Sans',sans-serif}button,input,textarea{font:inherit}button{cursor:pointer}.hidden{display:none!important}.muted{color:var(--muted)}.tiny{font-size:11px;line-height:1.6}.eyebrow{font-size:10px;letter-spacing:1.8px;font-weight:700;color:#87958d}.auth-screen{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 15% 20%,#e5eee5 0,transparent 32%),radial-gradient(circle at 85% 85%,#f4e9dc 0,transparent 30%),var(--cream)}.auth-card{background:#fff;width:min(100%,440px);padding:44px;border:1px solid var(--line);border-radius:22px;box-shadow:0 20px 70px #263b2d12}.brand-mark{height:44px;width:44px;background:var(--green);color:white;border-radius:13px;display:grid;place-items:center;font-family:'Playfair Display';font-size:27px;font-weight:bold}.brand-mark span{color:#f0b47a}.auth-card h1{font:600 38px/1.14 'Playfair Display';margin:10px 0}.auth-card h1 em{color:var(--green)}.auth-card>p:not(.eyebrow){font-size:13px;line-height:1.7}.auth-tabs{display:flex;background:#f1f4f0;padding:4px;border-radius:10px;margin:28px 0 20px}.tab{border:0;background:transparent;flex:1;padding:10px;border-radius:8px;color:var(--muted);font-weight:600;font-size:12px}.tab.active{background:#fff;color:var(--green);box-shadow:0 2px 8px #263b2d10}.field{margin:14px 0}.field label{display:block;font-size:11px;font-weight:700;margin-bottom:7px}.field input{width:100%;border:1px solid var(--line);border-radius:9px;padding:13px 14px;outline:none;font-size:13px}.field input:focus,textarea:focus{border-color:#6c9783;box-shadow:0 0 0 3px #315d4d12}.primary{background:var(--green);color:white;border:0;padding:13px 17px;border-radius:9px;font-weight:700;font-size:12px;transition:.2s}.primary:hover{background:#234536;transform:translateY(-1px)}.primary span{float:right;font-size:17px}.full{width:100%;margin-top:10px}.error{color:#b7473d;font-size:12px;min-height:16px}.app{min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:240px;background:#fff;border-right:1px solid var(--line);padding:27px 18px;display:flex;flex-direction:column;z-index:2}.brand{display:flex;align-items:center;gap:11px;padding:0 9px 44px}.brand b{display:block;font-size:14px}.brand small{display:block;color:var(--muted);font-size:10px;margin-top:3px}.brand-mark.small{height:36px;width:36px;font-size:21px;border-radius:10px}.side-label{font-size:9px;font-weight:700;letter-spacing:1.6px;color:#a1aaa4;padding:0 12px 12px}.sidebar nav{display:grid;gap:5px;overflow-y:auto;min-height:0;padding-right:3px;scrollbar-width:thin}.nav{display:flex;align-items:center;gap:13px;border:0;background:transparent;color:#75817a;padding:12px;border-radius:9px;text-align:left;font-size:12px;font-weight:600}.nav span{width:17px;text-align:center;font-size:16px}.nav:hover,.nav.active{background:var(--mint);color:var(--green)}.sidebar-bottom{margin-top:auto}.mini-card{background:#f5f7f2;border-radius:12px;padding:15px;margin:0 3px 20px}.mini-icon{color:#c48c54;font-size:18px;margin-bottom:8px}.mini-card b{font-size:12px}.mini-card p{font-size:10px;line-height:1.6;color:var(--muted);margin-bottom:0}.logout{width:100%}.main{margin-left:240px;min-height:100vh}.topbar{height:94px;padding:19px 4.5%;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:#ffffffa8}.topbar .eyebrow{margin:0 0 5px}.topbar h2{font:600 23px 'Playfair Display';margin:0}.user-chip{display:flex;align-items:center;gap:10px}.avatar{height:36px;width:36px;border-radius:50%;background:#e8d8c7;color:#72563e;display:grid;place-items:center;font-weight:700}.user-chip b{display:block;font-size:11px}.user-chip small{display:block;color:var(--muted);font-size:10px;margin-top:3px}.content{max-width:1200px;padding:30px 4.5% 60px;margin:auto}.welcome{background:#e9f0e9;border-radius:17px;padding:30px 34px;display:flex;justify-content:space-between;align-items:center;overflow:hidden;position:relative}.welcome:after{content:'ä';position:absolute;right:11%;top:-52px;font:190px 'Playfair Display';color:#315d4d12}.welcome h1{font:600 30px 'Playfair Display';margin:8px 0}.welcome p{font-size:12px;color:#66766d;margin:0;max-width:430px;line-height:1.7}.welcome .primary{position:relative;z-index:1;white-space:nowrap}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:22px 0}.stat,.panel,.lesson-card,.unit-card{background:#fff;border:1px solid var(--line);border-radius:13px;padding:18px}.stat small{color:var(--muted);font-size:10px}.stat strong{display:block;font:600 27px 'Playfair Display';margin:9px 0 4px}.stat span{font-size:10px;color:#829087}.section-head{display:flex;justify-content:space-between;align-items:center;margin:28px 0 13px}.section-head h3{font:600 18px 'Playfair Display';margin:0}.text-btn{border:0;background:transparent;color:var(--green);font-size:11px;font-weight:700}.progress-track{height:6px;background:#edf0eb;border-radius:8px;overflow:hidden}.progress-fill{height:100%;background:#5f8b70;border-radius:8px}.unit-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.unit-card{padding:17px;display:flex;gap:14px;align-items:flex-start;cursor:pointer;transition:.15s}.unit-card:hover,.lesson-card:hover{border-color:#b6c9bc;transform:translateY(-1px)}.unit-num{height:36px;width:36px;flex:none;border-radius:10px;background:#eff4ee;color:var(--green);display:grid;place-items:center;font-weight:700;font-size:12px}.unit-card h4{font-size:12px;margin:1px 0 5px}.unit-card p{font-size:10px;color:var(--muted);margin:0 0 12px}.unit-meta{font-size:9px;color:#89938d}.lesson-list{display:grid;gap:10px}.lesson-card{display:flex;align-items:center;gap:14px;cursor:pointer}.lesson-card h4{font-size:12px;margin:0 0 5px}.lesson-card p{font-size:10px;color:var(--muted);margin:0}.lesson-card .arrow{margin-left:auto;color:var(--green);font-size:18px}.pill{font-size:9px;padding:5px 8px;border-radius:20px;background:#f0f2ef;color:#78847d}.pill.done{background:#e6f2e9;color:#3d7654}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:20px}.lesson-main,.lesson-aside{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px}.lesson-main h1{font:600 28px 'Playfair Display';margin:8px 0}.lesson-main h3{font:600 17px 'Playfair Display';margin:25px 0 10px}.lesson-main p,.lesson-main li{font-size:12px;line-height:1.8;color:#5c6962}.phrase{background:#f6f8f4;padding:13px;border-radius:9px;margin:8px 0}.phrase b{font-size:13px}.phrase span{display:block;color:var(--muted);font-size:10px;margin-top:4px}.vocab-table{width:100%;border-collapse:collapse}.vocab-table td{padding:10px 7px;border-bottom:1px solid var(--line);font-size:11px}.vocab-table td:first-child{font-weight:700}.vocab-table td:last-child{color:var(--muted)}.lesson-aside h4{font-size:12px;margin:0 0 13px}.lesson-aside button{width:100%;margin-top:9px}.quiz-q{padding:15px 0;border-bottom:1px solid var(--line)}.quiz-q p{font-weight:700;color:var(--ink)}.option{display:block;border:1px solid var(--line);padding:10px;border-radius:8px;margin:7px 0;cursor:pointer;font-size:11px}.option:has(input:checked){border-color:#6e9b7d;background:#f1f7f1}.option input{margin-right:8px}.flashcard{max-width:560px;min-height:240px;margin:25px auto;background:#fff;border:1px solid var(--line);border-radius:18px;display:grid;place-items:center;text-align:center;padding:30px;box-shadow:0 12px 40px #263b2d09}.flashcard .de{font:600 36px 'Playfair Display';margin:15px 0}.flashcard .en{font-size:14px;color:var(--muted)}.flash-actions{display:flex;justify-content:center;gap:12px}.secondary{border:1px solid var(--line);background:#fff;padding:12px 18px;border-radius:9px;font-size:11px;font-weight:700;color:var(--ink)}.secondary:hover{background:#f4f7f3}.search{width:100%;padding:12px;border:1px solid var(--line);border-radius:9px;margin:10px 0 15px}.word-list{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.word-item{background:#fff;border:1px solid var(--line);border-radius:10px;padding:13px}.word-item b{font-size:12px}.word-item span{display:block;color:var(--muted);font-size:10px;margin-top:4px}.note-area{width:100%;min-height:250px;border:1px solid var(--line);border-radius:10px;padding:15px;resize:vertical;font-size:12px;line-height:1.7}.toast{position:fixed;right:25px;bottom:25px;background:#213d31;color:white;padding:13px 18px;border-radius:9px;font-size:12px;opacity:0;transform:translateY(10px);transition:.2s;z-index:10;pointer-events:none}.toast.show{opacity:1;transform:translateY(0)}@media(max-width:850px){.sidebar{width:68px;padding:20px 8px}.brand{padding:0 8px 35px}.brand>div,.side-label,.nav:not(.logout){font-size:0}.nav{justify-content:center;padding:12px 4px}.nav span{font-size:18px}.mini-card{display:none}.logout{font-size:0}.main{margin-left:68px}.lesson-layout{grid-template-columns:1fr}.lesson-aside{order:-1}}@media(max-width:600px){.content{padding:20px 15px}.topbar{padding:15px}.welcome{padding:23px;display:block}.welcome h1{font-size:25px}.welcome .primary{margin-top:17px}.stats{gap:8px}.stat{padding:12px}.stat strong{font-size:21px}.unit-grid,.word-list{grid-template-columns:1fr}.auth-card{padding:30px 24px}.lesson-main,.lesson-aside{padding:17px}}

/* v2 learner workspaces */
textarea{font:inherit;border:1px solid var(--line);border-radius:9px;padding:12px;line-height:1.6;max-width:100%;resize:vertical}input[type=range]{accent-color:var(--green)}audio{max-width:100%}.word-item small{display:block;line-height:1.6;margin-top:6px}.word-item .text-btn{margin-top:8px;padding-left:0}.panel .field input{width:100%;padding:11px;border:1px solid var(--line);border-radius:8px}.panel .option{line-height:1.6}.panel .flash-actions{flex-wrap:wrap;justify-content:flex-start}

/* Complete A1 library */
.library-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:18px}
.library-topic{min-width:0}
.library-topic h3{margin:8px 0 10px}
.library-topic p{line-height:1.65;color:var(--muted);font-size:13px}
.library-topic details{border-top:1px solid var(--line);margin-top:14px;padding-top:12px}
.library-topic summary{cursor:pointer;font-weight:650;font-size:13px}
.library-topic .option{display:flex;align-items:flex-start;gap:9px;margin:9px 0;font-size:13px}
.library-topic .option input{margin-top:3px}
@media(max-width:760px){.library-grid{grid-template-columns:1fr}}

/* A1 Mastery Studio */
.mastery-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;margin:18px 0}.mastery-card{display:flex;flex-direction:column;gap:8px;min-height:112px;padding:15px;text-align:left;border:1px solid var(--line);border-radius:14px;background:var(--white);color:var(--ink);cursor:pointer;transition:border-color .15s,transform .15s}.mastery-card:hover{transform:translateY(-2px);border-color:var(--green)}.mastery-card.selected{border-color:var(--green);box-shadow:inset 0 0 0 1px var(--accent);background:var(--surface-2)}.mastery-card b{font-size:14px}.mastery-card small{color:var(--muted);font-size:11px}.mastery-options{display:grid;gap:9px}.mastery-options .option{padding:13px;border:1px solid var(--line);border-radius:10px}.mastery-options .option:has(input:checked){border-color:var(--green);background:var(--surface-2)}@media(max-width:1050px){.mastery-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:650px){.mastery-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mastery-card{min-height:100px;padding:12px}}