@import url('https://fonts.googleapis.com/css2?family=DM+Mono&family=DM+Sans:wght@400;500;600;700&family=Playfair+Display:ital,wght@0,600;0,700;1,600;1,700&display=swap');

:root { --ink:#17202e; --muted:#697386; --blue:#3659e3; --blue-dark:#2848c7; --cream:#f7f5f0; --line:#e6e4df; --green:#2ca775; --orange:#e99432; --red:#df5c5c; }
* { box-sizing:border-box; }
body { margin:0; min-height:100vh; color:var(--ink); background:var(--cream); font-family:'DM Sans',sans-serif; }
button,input { font:inherit; }
button { cursor:pointer; }
.app-shell { width:min(100% - 32px, 780px); margin:auto; padding:24px 0 48px; }
.topbar { display:flex; justify-content:space-between; align-items:center; margin-bottom:56px; }
.brand { color:var(--ink); font-size:18px; font-weight:700; text-decoration:none; letter-spacing:-.4px; }.brand span{display:inline-grid;place-items:center;width:31px;height:31px;margin-right:5px;border-radius:9px;background:var(--blue);color:#fff;font-family:'DM Mono';font-size:13px}.streak{padding:9px 13px;border:1px solid #ebe3d4;border-radius:12px;background:#fff9ed;font-size:14px}.streak strong{color:#c46b15}
.hero { display:flex; justify-content:space-between; gap:30px; padding:0 14px 42px; }.eyebrow,.section-label,.card-hint{color:var(--blue);font-family:'DM Mono';font-size:11px;font-weight:700;letter-spacing:1.3px}.eyebrow{margin:0 0 12px}.hero h1{margin:0;font-family:'Playfair Display',serif;font-size:clamp(38px,8vw,58px);letter-spacing:-2px;line-height:1.03}.hero h1 em{color:var(--blue)}.subtext{max-width:430px;color:var(--muted);line-height:1.5}.daily-progress{text-align:center;align-self:center;color:var(--muted);font-size:12px}.progress-ring{display:grid;place-content:center;width:104px;height:104px;margin-bottom:8px;border:8px solid #dce3fb;border-top-color:var(--blue);border-radius:50%;line-height:1}.progress-ring strong{font-size:28px}.progress-ring span{margin-top:3px;color:var(--muted);font-size:12px}
.tabs { display:flex; gap:5px; overflow-x:auto; padding:5px; border:1px solid var(--line); border-radius:13px; background:#eeece7; }.tab{flex:1;white-space:nowrap;border:0;border-radius:9px;background:transparent;padding:10px 14px;color:var(--muted);font-size:14px;font-weight:600}.tab.active{background:#fff;color:var(--ink);box-shadow:0 1px 5px #26304a15}.view{display:none;padding-top:35px}.view.active-view{display:block}.study-header{display:flex;align-items:end;justify-content:space-between;margin:0 3px 17px}.study-header h2{margin:4px 0 0;font-family:'Playfair Display',serif;font-size:27px;letter-spacing:-.6px}.section-label{margin:0}.counter{color:var(--muted);font-family:'DM Mono';font-size:13px}.flashcard{position:relative;min-height:310px;transform-style:preserve-3d;transition:transform .5s;cursor:pointer;outline:none}.flashcard.flipped{transform:rotateY(180deg)}.card-face{position:absolute;display:flex;flex-direction:column;align-items:center;justify-content:center;inset:0;padding:34px;border:1px solid #dde1ef;border-radius:22px;background:#fff;backface-visibility:hidden;box-shadow:0 12px 30px #1523480c;text-align:center}.card-front{background:linear-gradient(145deg,#fff,#f8faff)}.card-back{transform:rotateY(180deg);background:linear-gradient(145deg,#3659e3,#2848c7);color:#fff}.card-front h2,.card-back h2{margin:13px 0 9px;font-family:'Playfair Display',serif;font-size:clamp(30px,6vw,43px);letter-spacing:-1px}.card-back .card-hint{color:#c7d3ff}.pronunciation{margin:0;color:var(--muted);font-family:'DM Mono';font-size:13px}.speak-button{margin-top:22px;border:0;border-radius:8px;background:#edf1ff;padding:8px 12px;color:var(--blue);font-size:13px;font-weight:600}.pos-tag{margin-top:5px;border:1px solid #94a8f5;border-radius:20px;padding:5px 10px;color:#e0e7ff;font-family:'DM Mono';font-size:12px}.flip-back{position:absolute;bottom:18px;margin:0;color:#bdcaff;font-size:12px}.primary-button{display:block;width:100%;margin-top:20px;border:0;border-radius:12px;background:var(--blue);padding:14px;color:#fff;font-weight:700;transition:.2s}.primary-button:hover{background:var(--blue-dark);transform:translateY(-1px)}.rating-actions{text-align:center}.rating-actions p{margin:20px 0 11px;color:var(--muted);font-size:14px}.rating-buttons{display:flex;gap:9px}.rating{flex:1;border:1px solid var(--line);border-radius:12px;background:#fff;padding:11px 6px;color:var(--ink);font-weight:700}.rating small{display:block;margin-top:4px;color:var(--muted);font-size:11px;font-weight:500}.rating.forget:hover{border-color:var(--red);color:var(--red)}.rating.hard:hover{border-color:var(--orange);color:var(--orange)}.rating.know:hover{border-color:var(--green);color:var(--green)}.hidden{display:none!important}.completion{padding:58px 20px;text-align:center}.completion span{font-size:44px}.completion h2{margin:10px 0 5px;font-family:'Playfair Display',serif;font-size:31px}.completion p{margin:0;color:var(--muted)}
.quiz-modes{display:flex;gap:8px;margin:0 0 14px;overflow-x:auto}.quiz-mode{flex:1;white-space:nowrap;border:1px solid var(--line);border-radius:10px;background:#fff;padding:9px 12px;color:var(--muted);font-size:13px;font-weight:700}.quiz-mode.active{border-color:var(--blue);background:#edf1ff;color:var(--blue)}.quiz-box{border:1px solid var(--line);border-radius:22px;background:#fff;padding:34px}.quiz-prompt{margin:0;color:var(--muted);font-size:14px}.quiz-box h2{margin:8px 0 26px;font-family:'Playfair Display',serif;font-size:38px}.quiz-context{margin:-8px 0 25px;border-radius:12px;background:#f5f7ff;padding:17px;color:var(--ink);font-size:17px;line-height:1.55}.quiz-options{display:grid;gap:10px}.quiz-option{border:1px solid var(--line);border-radius:11px;background:#fff;padding:13px;text-align:left;color:var(--ink);font-size:15px}.quiz-option:hover:not(:disabled){border-color:#9baefa;background:#f6f8ff}.quiz-option.correct{border-color:var(--green);background:#effaf6;color:#177b52}.quiz-option.wrong{border-color:var(--red);background:#fff4f4;color:#bd3e3e}.answer-form label{display:block;margin-bottom:8px;color:var(--muted);font-size:13px;font-weight:600}.answer-form div{display:flex;gap:9px}.answer-form input{min-width:0;flex:1;border:1px solid #bfc7df;border-radius:10px;padding:12px;outline-color:var(--blue)}.answer-form button{border:0;border-radius:10px;background:var(--blue);padding:0 16px;color:#fff;font-weight:700}.quiz-feedback{min-height:20px;margin:17px 0 0;font-weight:600}.quiz-feedback.correct{color:var(--green)}.quiz-feedback.wrong{color:var(--red)}
.search-box{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:13px;background:#fff;padding:0 14px}.search-box span{font-size:24px;color:var(--muted)}.search-box input{width:100%;border:0;outline:0;padding:15px 0;background:transparent}.word-results{display:grid;gap:9px;margin-top:16px}.word-result{display:flex;justify-content:space-between;gap:18px;border-bottom:1px solid var(--line);padding:15px 6px}.word-result strong{font-family:'Playfair Display',serif;font-size:20px}.word-result p{margin:4px 0 0;color:var(--muted);font-size:14px}.word-result span{align-self:center;color:var(--blue);font-family:'DM Mono';font-size:11px}.empty-state{color:var(--muted);text-align:center;padding:30px}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.stat-grid article{padding:23px 12px;border:1px solid var(--line);border-radius:15px;background:#fff;text-align:center}.stat-grid strong{display:block;color:var(--blue);font-family:'Playfair Display',serif;font-size:36px}.stat-grid span{color:var(--muted);font-size:13px}.weak-words{margin-top:25px;border:1px solid var(--line);border-radius:17px;background:#fff;padding:22px}.weak-words-header{display:flex;justify-content:space-between;align-items:center;gap:16px}.weak-words h3{margin:4px 0 0;font-family:'Playfair Display',serif;font-size:22px}.weak-words-hint{margin:15px 0 0;color:var(--muted);font-size:14px}.weak-words-list{display:grid;grid-template-columns:repeat(2,1fr);gap:9px;margin-top:16px}.weak-words-list article{display:flex;justify-content:space-between;gap:8px;border-radius:10px;background:#fff5f3;padding:10px 11px}.weak-words-list strong{font-family:'Playfair Display',serif;font-size:17px}.weak-words-list span{align-self:center;color:#be4b43;font-size:11px;font-weight:600;white-space:nowrap}.outline-button:disabled{cursor:not-allowed;opacity:.5}.data-tools{display:flex;justify-content:space-between;gap:20px;margin-top:25px;border-radius:17px;background:#eef2ff;padding:24px}.data-tools h3{margin:0 0 6px;font-family:'Playfair Display',serif;font-size:21px}.data-tools p{max-width:400px;margin:0;color:var(--muted);font-size:13px;line-height:1.5}.tool-buttons{display:flex;align-items:center;gap:8px;white-space:nowrap}.outline-button{display:inline-block;border:1px solid #aebdf5;border-radius:10px;background:#fff;padding:10px 12px;color:var(--blue);font-size:13px;font-weight:700}.import-message{text-align:center;color:var(--green);font-weight:600}
@media(max-width:600px){.app-shell{width:min(100% - 22px,780px);padding-top:16px}.topbar{margin-bottom:38px}.hero{padding-bottom:28px}.daily-progress{display:none}.tabs{margin:0 -2px}.tab{padding:10px}.study-header h2{font-size:24px}.flashcard{min-height:290px}.data-tools{display:block}.tool-buttons{margin-top:18px}.quiz-box{padding:24px 18px}.word-result{gap:8px}}