@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap";:root{--bg-primary:#f8fafc;--bg-secondary:#f1f5f9;--bg-tertiary:#fff;--text-primary:#0f172a;--text-secondary:#475569;--accent-color:#4f46e5;--accent-hover:#4338ca;--accent-light:#e0e7ff;--danger:#ef4444;--success:#10b981;--warning:#f59e0b;--border-color:#e2e8f0;--input-bg:#fff;--placeholder-color:#94a3b8;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -1px #0000000f;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -2px #0000000d;--radius-sm:.375rem;--radius-md:.5rem;--radius-lg:1rem;--radius-xl:1.5rem;--font-sans:"Inter", sans-serif;--font-display:"Outfit", sans-serif}[data-theme=dark]{--bg-primary:#0f172a;--bg-secondary:#1e293b;--bg-tertiary:#293548;--text-primary:#f8fafc;--text-secondary:#94a3b8;--accent-color:#818cf8;--accent-hover:#6366f1;--accent-light:#818cf833;--border-color:#3d4f68;--input-bg:#1e293b;--placeholder-color:#64748b;--shadow-md:0 4px 6px -1px #00000059;--shadow-lg:0 10px 15px -3px #0006, 0 4px 6px -2px #0003}*{box-sizing:border-box;margin:0;padding:0}html{overflow-y:scroll}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;line-height:1.5;transition:background-color .3s,color .3s;overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:700}a{color:inherit;text-decoration:none}button{cursor:pointer;color:inherit;background:0 0;border:none;outline:none;font-family:inherit}input,textarea,select{background:var(--input-bg);color:var(--text-primary);border:1.5px solid var(--border-color);border-radius:var(--radius-md);padding:.75rem 1rem;font-family:inherit;transition:border-color .2s,box-shadow .2s}input:focus,textarea:focus,select:focus{border-color:var(--accent-color);box-shadow:0 0 0 3px var(--accent-light);outline:none}select option{background:var(--input-bg);color:var(--text-primary)}::placeholder{color:var(--placeholder-color);opacity:1}.glass{-webkit-backdrop-filter:blur(12px);background:#f8fafcd9;border-bottom:1px solid #e2e8f099}[data-theme=dark] .glass{background:#0f172acc;border-bottom:1px solid #ffffff0d}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--accent-color)}.container{width:100%;max-width:1280px;margin:0 auto;padding:0 2rem}.page-wide{width:100%;max-width:1100px;margin:0 auto}.deck-grid{grid-template-columns:1fr 1fr;align-items:start;gap:2.5rem;margin-bottom:4rem;display:grid}.modes-grid{grid-template-columns:1fr 1fr;gap:1rem;display:grid}@media (width<=850px){.deck-grid{grid-template-columns:1fr}}@media (width<=500px){.modes-grid{grid-template-columns:1fr}}.flashcard-wrapper{flex:1;min-height:350px}.flashcard-drag-target{width:100%;height:100%}.flashcard-actions{margin-top:auto;padding-top:1.5rem}@media (width>=768px){.flashcard-wrapper{flex:none;height:450px}.flashcard-actions{margin-top:2rem;padding-top:0}}.mc-container{flex-direction:column;flex:1;width:100%;max-width:1000px;margin:0 auto;display:flex}.mc-question{flex:1;justify-content:center;align-items:center;margin-bottom:2rem;display:flex}.mc-grid{grid-template-columns:1fr;gap:1.25rem;width:100%;display:grid}@media (width>=768px){.mc-question{flex:none;min-height:250px;margin-bottom:3rem}.mc-grid{grid-template-columns:1fr 1fr}}.mc-option-btn{border-radius:var(--radius-lg);background:var(--bg-tertiary);color:var(--text-primary);border:2px solid var(--border-color);cursor:pointer;text-align:left;outline:none;align-items:center;gap:1.25rem;padding:1.25rem 1.5rem;font-size:1.125rem;font-weight:500;transition:all .2s;display:flex}.mc-option-btn:not(:disabled):hover{border-color:var(--text-secondary);background:var(--bg-secondary)}.mc-option-letter{background:var(--bg-secondary);width:36px;height:36px;color:var(--text-secondary);border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;font-size:.875rem;font-weight:700;transition:all .2s;display:flex}.mc-option-btn:not(:disabled):hover .mc-option-letter{background:var(--text-secondary);color:#fff}.btn-primary{background-color:var(--accent-color);color:#fff;border-radius:var(--radius-lg);justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1.5rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary:hover{background-color:var(--accent-hover);box-shadow:var(--shadow-md)}.btn-secondary{background-color:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color);border-radius:var(--radius-lg);justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1.5rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-secondary:hover{background-color:var(--bg-secondary);border-color:var(--accent-color)}.btn-icon{border-radius:var(--radius-md);justify-content:center;align-items:center;padding:.5rem;transition:background-color .2s;display:inline-flex}.btn-icon:hover{background-color:var(--bg-secondary)}.card{background-color:var(--bg-tertiary);border-radius:var(--radius-xl);box-shadow:var(--shadow-md);border:1px solid var(--border-color);padding:1.5rem;transition:box-shadow .2s,border-color .2s}.card-hover:hover{box-shadow:var(--shadow-lg);border-color:var(--accent-color)}