:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#7c3aed;--accent-bg:#7c3aed1a;--accent-border:#7c3aed80;--social-bg:#f4f3ec80;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:16px/1.5 var(--sans);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--text:#9ca3af;--text-h:#f3f4f6;--bg:#16171d;--border:#2e303a;--code-bg:#1f2028;--accent:#a78bfa;--accent-bg:#a78bfa26;--accent-border:#a78bfa80}}*{box-sizing:border-box}body{margin:0}button{font-family:var(--sans)}.app{flex-direction:column;max-width:600px;min-height:100vh;margin:0 auto;padding:20px;display:flex}header{text-align:center;margin-bottom:20px}header h1{color:var(--text-h);margin:0 0 16px;font-size:28px}nav{justify-content:center;gap:8px;display:flex}.tab{border:2px solid var(--border);color:var(--text);cursor:pointer;background:0 0;border-radius:8px;padding:8px 24px;font-size:16px;transition:all .2s}.tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}.tab:hover:not(.active){border-color:var(--accent-border)}.stats{background:var(--code-bg);border-radius:12px;margin-bottom:24px;padding:16px 20px}.stats h2{margin:0 0 10px;font-size:16px}.stats-bar{background:var(--border);border-radius:4px;height:8px;margin-bottom:12px;overflow:hidden}.stats-fill{background:#22c55e;border-radius:4px;height:100%;transition:width .4s}.stats-numbers{justify-content:space-around;display:flex}.stat{flex-direction:column;align-items:center;gap:2px;display:flex}.stat-value{color:var(--text-h);font-size:20px;font-weight:600}.stat-label{color:var(--text);font-size:13px}.flashcard{perspective:1000px;cursor:pointer;height:280px;margin-bottom:20px}.flashcard-inner{width:100%;height:100%;transform-style:preserve-3d;transition:transform .5s;position:relative}.flashcard.flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{backface-visibility:hidden;border:2px solid var(--border);box-sizing:border-box;background:var(--bg);border-radius:16px;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;padding:24px;display:flex;position:absolute}.flashcard-back{gap:12px;transform:rotateY(180deg)}.card-label{text-transform:uppercase;letter-spacing:1.5px;color:var(--accent);margin-bottom:8px;font-size:12px}.flashcard-front h2{color:var(--text-h);margin:0;font-size:36px}.hint{color:var(--text);opacity:.6;margin-top:16px;font-size:13px}.definition{color:var(--text-h);text-align:center;margin:0;font-size:18px;line-height:1.5}.example{color:var(--text);text-align:center;margin:0;font-size:14px;font-style:italic}.mark-btn{border:2px solid var(--border);color:var(--text);cursor:pointer;background:0 0;border-radius:6px;padding:6px 16px;font-size:14px;transition:all .2s}.mark-btn.known{color:#fff;background:#22c55e;border-color:#22c55e}.mark-btn:hover:not(.known){color:#22c55e;border-color:#22c55e}.deck-progress{text-align:center;color:var(--text);margin-bottom:12px;font-size:14px}.deck-controls{justify-content:center;gap:12px;display:flex}.nav-btn{border:2px solid var(--border);color:var(--text-h);cursor:pointer;background:0 0;border-radius:8px;padding:10px 24px;font-size:16px;transition:all .2s}.nav-btn:hover{border-color:var(--accent);color:var(--accent)}.shuffle-btn{background:var(--accent-bg);border-color:var(--accent-border);color:var(--accent)}.quiz{flex-direction:column;gap:20px;display:flex}.quiz-header{color:var(--text);justify-content:space-between;font-size:14px;display:flex}.quiz-question{background:var(--code-bg);text-align:center;border-radius:12px;padding:24px}.quiz-definition{color:var(--text-h);margin:0 0 12px;font-size:18px;line-height:1.5}.quiz-example{color:var(--text);margin:0;font-size:14px;font-style:italic}.quiz-options{flex-direction:column;gap:10px;display:flex}.quiz-option{border:2px solid var(--border);color:var(--text-h);cursor:pointer;text-align:left;background:0 0;border-radius:10px;padding:14px 20px;font-size:16px;transition:all .2s}.quiz-option:hover{border-color:var(--accent-border)}.quiz-option.correct{color:#22c55e;background:#22c55e1a;border-color:#22c55e}.quiz-option.wrong{color:#ef4444;background:#ef44441a;border-color:#ef4444}.next-btn{align-self:center}.quiz-result{text-align:center;padding:40px 20px}.quiz-result h2{margin:0 0 20px}.score-display{margin-bottom:8px}.score-number{color:var(--accent);font-size:48px;font-weight:700}.score-total{color:var(--text);font-size:24px}.score-percent{color:var(--text);margin:0 0 24px;font-size:20px}footer{text-align:center;justify-content:center;gap:12px;margin-top:auto;padding-top:40px;padding-bottom:20px;display:flex}.reset-btn{border:1px solid var(--border);color:var(--text);cursor:pointer;opacity:.6;background:0 0;border-radius:6px;padding:8px 16px;font-size:13px;transition:all .2s}.reset-btn:hover{opacity:1;color:#ef4444;border-color:#ef4444}.settings-btn:hover{border-color:var(--accent);color:var(--accent)}.upload-section{flex-direction:column;gap:16px;display:flex}.upload-tabs{justify-content:center;gap:8px;display:flex}.upload-tab{border:2px solid var(--border);color:var(--text);cursor:pointer;background:0 0;border-radius:6px;padding:6px 16px;font-size:14px;transition:all .2s}.upload-tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}.upload-form{flex-direction:column;gap:12px;display:flex}.upload-form input[type=text],.upload-form textarea{border:2px solid var(--border);background:var(--bg);color:var(--text-h);resize:vertical;border-radius:8px;padding:12px 16px;font-family:inherit;font-size:15px}.upload-form input[type=text]:focus,.upload-form textarea:focus{border-color:var(--accent);outline:none}.upload-hint{color:var(--text);margin:0;font-size:13px;line-height:1.5}.upload-message{text-align:center;border-radius:8px;padding:10px 16px;font-size:14px}.upload-message.success{color:#22c55e;background:#22c55e1a;border:1px solid #22c55e4d}.upload-message.error{color:#ef4444;background:#ef44441a;border:1px solid #ef44444d}.file-input{border:2px dashed var(--border);cursor:pointer;color:var(--text);border-radius:8px;padding:12px}.flashcard.expanded{height:auto;min-height:280px}.flashcard.expanded,.flashcard.expanded .flashcard-back{height:auto;min-height:280px;position:relative}.card-actions{flex-wrap:wrap;justify-content:center;gap:8px;display:flex}.mnemonic-toggle{border-color:var(--accent-border);color:var(--accent)}.has-mnemonic-badge{background:var(--accent);color:#fff;border-radius:4px;padding:2px 8px;font-size:11px;font-weight:700;position:absolute;top:12px;right:12px}.mnemonic{border-top:1px solid var(--border);text-align:left;width:100%;margin-top:16px;padding-top:16px}.mnemonic-field{margin-bottom:12px}.mnemonic-field p{color:var(--text-h);margin:4px 0 0;font-size:14px;line-height:1.5}.mnemonic-label{text-transform:uppercase;letter-spacing:1px;color:var(--accent);font-size:11px;font-weight:600}.mnemonic-story{background:var(--code-bg);border-left:3px solid var(--accent);border-radius:6px;padding:8px 12px}.mnemonic-hook{font-weight:600;color:var(--accent)!important}.mnemonic-loading{text-align:center;color:var(--text);padding:12px;font-size:14px;animation:1.5s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:.4}50%{opacity:1}}.mnemonic-hint{text-align:center;color:var(--text);margin:0;font-size:13px}.generate-btn{border:2px solid var(--accent-border);background:var(--accent-bg);color:var(--accent);cursor:pointer;border-radius:6px;margin:8px auto 0;padding:8px 20px;font-size:14px;transition:all .2s;display:block}.generate-btn:hover{background:var(--accent);color:#fff}.generate-btn.regenerate{opacity:.7;margin-top:12px;padding:4px 12px;font-size:12px}.generate-btn.regenerate:hover{opacity:1}.settings-overlay{z-index:100;background:#00000080;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.settings-modal{background:var(--bg);border:1px solid var(--border);border-radius:12px;width:90%;max-width:400px;padding:24px}.settings-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.settings-header h2{margin:0;font-size:20px}.settings-close{color:var(--text);cursor:pointer;background:0 0;border:none;font-size:24px}.settings-body{flex-direction:column;gap:12px;display:flex}.settings-label{color:var(--text-h);font-size:14px;font-weight:600}.settings-input{border:2px solid var(--border);background:var(--bg);color:var(--text-h);border-radius:8px;padding:10px 14px;font-family:monospace;font-size:15px}.settings-input:focus{border-color:var(--accent);outline:none}.settings-hint{color:var(--text);margin:0;font-size:13px}.settings-hint a{color:var(--accent)}.settings-save{align-self:flex-end}