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0;font-size:.76rem;color:var(--muted)}.browser-modal{position:relative;display:flex;flex-direction:column;width:min(900px,100%);max-height:86vh;padding:24px;border-radius:16px;background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow);animation:scale-in .22s ease both}.browser-head{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:18px;padding-right:40px}.browser-head h3{display:inline-flex;align-items:center;gap:8px;margin:0;font-size:1.4rem;color:#1a1f2b}.browser-head p{margin:2px 0 0;color:var(--muted);font-size:.9rem}.browser-search input{width:240px;max-width:40vw;padding:10px 14px;border-radius:10px;border:1.5px solid var(--line);background:var(--paper-deep);font:inherit;color:#1a1f2b;outline:none}.browser-search 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#2563eb40}.browser-tile-name{font-size:.84rem;font-weight:700;color:#1a1f2b;text-align:center;line-height:1.2;max-width:100%;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.browser-tile-type{font-size:.74rem;color:var(--muted)}.browser-empty{margin:0;color:var(--muted);font-size:.9rem;font-style:italic}.notebooks-modal{width:min(640px,100%)}.notebook-editor{display:grid;gap:12px;margin-bottom:22px}.notebook-editor-head{display:flex;align-items:center;gap:12px}.notebook-editor-head strong{display:block;color:#1a1f2b}.notebook-editor-head span{font-size:.84rem;color:var(--muted)}.notebook-textarea{width:100%;min-height:160px;resize:vertical;padding:14px 16px;border-radius:12px;border:1.5px solid var(--line);background:var(--paper-deep);font:inherit;font-size:.95rem;line-height:1.5;color:#1a1f2b;outline:none}.notebook-textarea:focus{border-color:var(--brand)}.notebook-actions{display:flex;gap:10px}.notebook-list{display:grid;gap:8px}.notebook-list-item{display:flex;align-items:center;gap:12px;width:100%;padding:10px 12px;border-radius:12px;border:1px solid var(--line);background:var(--paper);cursor:pointer;text-align:left;transition:border-color .14s ease}.notebook-list-item:hover{border-color:var(--brand)}.notebook-list-copy{display:grid;gap:2px;min-width:0}.notebook-list-copy strong{color:#1a1f2b;font-size:.9rem}.notebook-list-copy span{color:var(--muted);font-size:.82rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.micro-card-upload{position:relative;overflow:hidden;padding:0}.micro-card-upload img{width:100%;height:100%;object-fit:cover}.micro-card-upload strong{position:absolute;left:0;right:0;bottom:0;padding:4px 6px;background:#1a1f2bb3;color:#fff;font-size:.72rem;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.micro-card-remove{position:absolute;top:4px;right:4px;display:grid;place-items:center;width:22px;height:22px;border-radius:50%;background:#1a1f2bb8;color:#fff;cursor:pointer}.micro-card-remove:hover{background:#b91c1c}.xp-bar{display:inline-flex;align-items:center;gap:8px;padding:5px 10px;border-radius:999px;background:var(--paper-deep);border:1px solid var(--line);transition:transform .2s ease,box-shadow .2s ease}.xp-bar.is-bumped{transform:scale(1.06);box-shadow:0 0 0 3px #2563eb38}.xp-level{display:inline-flex;align-items:center;gap:4px;font-weight:800;font-size:.82rem;color:var(--brand);white-space:nowrap}.xp-track{position:relative;width:96px;height:8px;border-radius:999px;background:#2563eb24;overflow:hidden}.xp-fill{position:absolute;inset:0 auto 0 0;border-radius:999px;background:linear-gradient(90deg,#2563eb,#7c5cff);transition:width .6s cubic-bezier(.22,1,.36,1)}.xp-count{font-size:.74rem;font-weight:700;color:var(--muted);white-space:nowrap}.confetti-canvas{position:fixed;inset:0;width:100vw;height:100vh;pointer-events:none;z-index:90}.celebration{position:fixed;top:88px;left:50%;transform:translate(-50%);z-index:95;pointer-events:none}.celebration-card{display:flex;align-items:center;gap:14px;padding:14px 22px;border-radius:16px;background:var(--paper);border:1px solid var(--line);box-shadow:0 20px 50px #1e293b40;animation:celebrate-in .4s cubic-bezier(.22,1,.36,1) both}.celebration-card strong{display:block;font-size:1.05rem;color:#1a1f2b}.celebration-card span{font-size:.86rem;color:var(--muted)}.celebration-level,.celebration-level strong{color:#7c5cff}.celebration-badge{display:grid;place-items:center;width:46px;height:46px;border-radius:50%;flex:0 0 auto;color:#fff;background:linear-gradient(135deg,#2563eb,#7c5cff);box-shadow:0 6px 16px #2563eb66;animation:badge-pop .5s cubic-bezier(.34,1.56,.64,1) both}@keyframes celebrate-in{0%{opacity:0;transform:translateY(-16px) scale(.9)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes badge-pop{0%{transform:scale(0) rotate(-30deg)}to{transform:scale(1) rotate(0)}}.daily-streak{display:inline-flex;align-items:center;gap:4px;padding:2px 9px;border-radius:999px;background:linear-gradient(135deg,#f59e0b,#ef4444);color:#fff;font-weight:800;font-size:.78rem}.daily-card{display:flex;align-items:center;gap:12px;width:100%;padding:10px;border-radius:12px;border:1px solid var(--line);background:var(--paper-deep);cursor:pointer;text-align:left;transition:border-color .14s ease,transform .12s ease}.daily-card:hover{border-color:var(--brand);transform:translateY(-1px)}.daily-copy{display:grid;gap:2px;min-width:0}.daily-copy strong{color:#1a1f2b;font-size:.95rem}.daily-copy span{color:var(--muted);font-size:.82rem}.daily-cta{width:100%;margin-top:10px;padding:10px;border-radius:10px;background:linear-gradient(135deg,#2563eb,#7c5cff);color:#fff;font-weight:700;font-size:.88rem;cursor:pointer;transition:transform .12s ease,opacity .14s ease}.daily-cta:hover:not(:disabled){transform:translateY(-1px)}.daily-cta:disabled{background:var(--paper-deep);color:var(--muted);cursor:default}.achievements-modal{width:min(680px,100%)}.ach-level{display:flex;align-items:center;gap:12px;margin-bottom:20px}.ach-level-badge{display:inline-flex;align-items:center;gap:5px;font-weight:800;color:#7c5cff;white-space:nowrap}.ach-level-track{position:relative;flex:1;height:10px;border-radius:999px;background:#7c5cff29;overflow:hidden}.ach-level-fill{position:absolute;inset:0 auto 0 0;border-radius:999px;background:linear-gradient(90deg,#2563eb,#7c5cff)}.ach-level-num{font-size:.8rem;font-weight:700;color:var(--muted);white-space:nowrap}.ach-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px;overflow-y:auto}.ach-item{display:flex;align-items:flex-start;gap:12px;padding:14px;border-radius:12px;border:1px solid var(--line);background:var(--paper-deep);opacity:.7}.ach-item.is-unlocked{opacity:1;border-color:#2563eb66;background:var(--paper);box-shadow:var(--shadow-soft)}.ach-icon{display:grid;place-items:center;width:42px;height:42px;flex:0 0 auto;border-radius:12px;background:var(--paper-deep);color:var(--muted)}.ach-item.is-unlocked .ach-icon{color:#fff;background:linear-gradient(135deg,#2563eb,#7c5cff)}.ach-copy{display:grid;gap:3px;min-width:0}.ach-copy strong{color:#1a1f2b;font-size:.95rem}.ach-copy>span{color:var(--muted);font-size:.84rem}.ach-progress{display:flex;align-items:center;gap:8px;margin-top:4px}.ach-progress-track{position:relative;flex:1;height:6px;border-radius:999px;background:#1a1f2b1a;overflow:hidden}.ach-progress-fill{position:absolute;inset:0 auto 0 0;border-radius:999px;background:var(--brand)}.ach-progress-num{font-size:.74rem;font-weight:700;color:var(--muted);white-space:nowrap}.quiz-lives{display:inline-flex;align-items:center;gap:4px;color:#ef4444}.quiz-lives .is-alive{color:#ef4444;animation:heart-pop .3s ease both}.quiz-lives .is-lost{color:#1a1f2b33}@keyframes heart-pop{0%{transform:scale(.6)}60%{transform:scale(1.2)}to{transform:scale(1)}}.flashcards-modal{width:min(560px,100%)}.fc-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.flashcard{display:block;width:100%;height:320px;margin:0 auto 16px;border:none;background:transparent;cursor:pointer;perspective:1200px}.flashcard-inner{position:relative;display:block;width:100%;height:100%;transition:transform .52s cubic-bezier(.22,1,.36,1);transform-style:preserve-3d}.flashcard.is-flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-face{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:20px;border-radius:16px;border:1px solid var(--line);background:var(--paper);box-shadow:var(--shadow-soft);backface-visibility:hidden;-webkit-backface-visibility:hidden}.flashcard-front img{max-width:80%;max-height:76%;object-fit:contain}.flashcard-hint{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:.9rem;font-weight:600}.flashcard-back{transform:rotateY(180deg);text-align:center;background:linear-gradient(180deg,#ffffff,var(--paper-deep))}.flashcard-back strong{font-size:1.5rem;color:#1a1f2b}.flashcard-back em{color:var(--brand);font-weight:700;font-style:normal}.flashcard-note{margin:8px 0 0;max-width:90%;font-size:.9rem;line-height:1.5;color:#5b6472}.flashcard-where{margin-top:6px;font-size:.82rem;color:var(--muted)}.fc-controls{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:12px}.fc-study-link{display:block;width:100%;padding:8px;background:transparent;color:var(--brand);font-weight:700;font-size:.9rem;cursor:pointer}.fc-study-link:hover{text-decoration:underline}.shortcuts-modal{width:min(440px,100%)}.shortcuts-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}.shortcuts-list li{display:flex;align-items:center;gap:14px;padding:8px 4px;border-bottom:1px solid var(--line)}.shortcut-keys{display:inline-flex;gap:4px;flex:0 0 96px}.shortcut-keys kbd{display:inline-grid;place-items:center;min-width:26px;height:26px;padding:0 7px;border-radius:7px;border:1px solid var(--line);border-bottom-width:2px;background:var(--paper-deep);font-family:inherit;font-size:.8rem;font-weight:700;color:#1a1f2b}.shortcut-label{color:#5b6472;font-size:.9rem}.user-menu-theme{display:grid;gap:7px;padding:4px 12px 8px}.user-menu-theme-label{font-size:.78rem;font-weight:700;color:var(--muted)}.user-menu-swatches{display:flex;gap:8px}.user-menu-swatch{display:grid;place-items:center;width:26px;height:26px;border-radius:50%;cursor:pointer;color:#fff;border:2px solid transparent;transition:transform .12s ease,box-shadow .14s ease}.user-menu-swatch:hover{transform:scale(1.12)}.user-menu-swatch.is-active{box-shadow:0 0 0 2px var(--paper),0 0 0 4px #1a1f2b73}.welcome-modal{position:relative;width:min(440px,100%);padding:32px 28px 24px;border-radius:18px;background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow);text-align:center;animation:scale-in .24s ease both}.welcome-art{display:grid;place-items:center;width:76px;height:76px;margin:0 auto 16px;border-radius:50%;color:#fff;background:linear-gradient(135deg,var(--accent),color-mix(in srgb,var(--accent) 55%,#7c5cff));box-shadow:0 10px 26px color-mix(in srgb,var(--accent) 40%,transparent);animation:badge-pop .48s cubic-bezier(.34,1.56,.64,1) both}.welcome-title{margin:0 0 10px;font-size:1.35rem;color:#1a1f2b}.welcome-body{margin:0 auto 20px;max-width:36ch;font-size:.95rem;line-height:1.55;color:#5b6472}.welcome-dots{display:flex;justify-content:center;gap:7px;margin-bottom:20px}.welcome-dot{width:8px;height:8px;border-radius:50%;background:var(--paper-deep);box-shadow:inset 0 0 0 1px var(--line);transition:background .2s ease,transform .2s ease}.welcome-dot.is-active{background:var(--accent);transform:scale(1.25);box-shadow:none}.welcome-actions{display:flex;justify-content:center;gap:10px}