@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--bg-color: #0f172a;--bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);--text-primary: #f8fafc;--text-secondary: #94a3b8;--accent-color: #6366f1;--accent-hover: #4f46e5;--success-color: #10b981;--error-color: #ef4444;--glass-bg: rgba(30, 41, 59, .7);--glass-border: rgba(255, 255, 255, .1);--card-shadow: 0 8px 32px 0 rgba(0, 0, 0, .37);--font-main: "Inter", sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background:var(--bg-gradient);background-attachment:fixed;color:var(--text-primary);min-height:100vh;display:flex;flex-direction:column;-webkit-font-smoothing:antialiased}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes pulseBorder{0%{border-color:var(--glass-border)}50%{border-color:var(--accent-color)}to{border-color:var(--glass-border)}}@keyframes pulse{0%{transform:scale(1);opacity:.8}50%{transform:scale(1.1);opacity:1}to{transform:scale(1);opacity:.8}}.pulse{animation:pulse 2s infinite ease-in-out}.glass-panel{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:16px;box-shadow:var(--card-shadow)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:8px;font-weight:600;font-family:inherit;cursor:pointer;transition:all .3s ease;border:none;font-size:.95rem}.btn-primary{background:var(--accent-color);color:#fff;box-shadow:0 4px 14px #6366f163}.btn-primary:hover:not(:disabled){background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 6px 20px #6366f166}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-outline{background:transparent;color:var(--text-primary);border:1px solid var(--glass-border)}.btn-outline:hover:not(:disabled){background:rgba(255,255,255,.05);border-color:var(--text-secondary)}.app-container{max-width:1000px;margin:0 auto;padding:40px 20px;width:100%;display:flex;flex-direction:column;gap:30px;animation:fadeIn .6s ease-out}.header{text-align:center;margin-bottom:20px}.header h1{font-size:3rem;font-weight:700;background:linear-gradient(to right,#818cf8,#c084fc);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:10px}.header p{color:var(--text-secondary);font-size:1.1rem}.api-key-section{padding:20px;display:flex;flex-direction:column;gap:12px}.input-field{width:100%;padding:12px 16px;background:rgba(0,0,0,.2);border:1px solid var(--glass-border);border-radius:8px;color:#fff;font-family:inherit;font-size:1rem;transition:border-color .3s}.input-field:focus{outline:none;border-color:var(--accent-color)}.upload-area{padding:40px;border:2px dashed var(--glass-border);border-radius:16px;text-align:center;cursor:pointer;transition:all .3s ease;display:flex;flex-direction:column;align-items:center;gap:16px}.upload-area:hover,.upload-area.drag-active{background:rgba(255,255,255,.02);border-color:var(--accent-color)}.upload-icon{color:var(--accent-color);width:48px;height:48px;transition:transform .3s ease}.upload-area:hover .upload-icon{transform:scale(1.1)}.file-list{display:flex;flex-direction:column;gap:10px;margin-top:20px;text-align:left}.file-item{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:rgba(255,255,255,.05);border-radius:8px;font-size:.9rem}.file-item button{background:none;border:none;color:var(--error-color);cursor:pointer;opacity:.7;transition:opacity .2s;display:flex;align-items:center;justify-content:center}.file-item button:hover{opacity:1}.loading-container{display:flex;flex-direction:column;align-items:center;gap:16px;padding:40px;text-align:center}.spinner{width:40px;height:40px;border:4px solid rgba(255,255,255,.1);border-left-color:var(--accent-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.questions-container{display:flex;flex-direction:column;gap:20px}.question-card{padding:24px;animation:fadeIn .4s ease-out;position:relative}.question-card.updating{opacity:.5;pointer-events:none}.question-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:16px;border-bottom:1px solid var(--glass-border);padding-bottom:12px}.question-title{font-size:1.25rem;font-weight:600;color:#c084fc}.question-type{font-size:.8rem;padding:4px 8px;background:rgba(99,102,241,.2);border-radius:4px;color:#818cf8}.question-text{font-size:1.05rem;line-height:1.6;margin-bottom:20px;white-space:pre-wrap}.options-list{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}.option-item{padding:12px 16px;border-radius:8px;background:rgba(0,0,0,.2);border:1px solid var(--glass-border);transition:border-color .2s;display:flex;gap:12px}.option-letter{font-weight:600;color:var(--text-secondary)}.option-item.correct{border-left:4px solid var(--success-color);background:rgba(16,185,129,.05)}.option-item.correct .option-letter{color:var(--success-color)}.question-actions{display:flex;justify-content:flex-end;margin-top:16px;border-top:1px solid var(--glass-border);padding-top:16px}.actions-bar{display:flex;justify-content:space-between;align-items:center;padding:20px;margin-top:20px;position:sticky;bottom:20px;z-index:10}.error-message{color:var(--error-color);background:rgba(239,68,68,.1);padding:12px;border-radius:8px;border:1px solid rgba(239,68,68,.2);margin-bottom:16px}.app-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;margin-bottom:2rem;border-radius:16px;border:1px solid var(--glass-border)}.header-left{display:flex;align-items:center;gap:1rem}.header-logo{height:40px;width:auto;object-fit:contain;mix-blend-mode:screen}.header-title{font-size:1.25rem;font-weight:700;background:linear-gradient(to right,#818cf8,#c084fc);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.header-right{display:flex;align-items:center}.header-subtitle{font-size:.85rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}.app-footer{margin-top:4rem;padding:1.25rem 2rem;border-radius:16px;border:1px solid var(--glass-border)}.footer-content{display:flex;justify-content:space-between;align-items:center;gap:1.5rem;text-align:left}.footer-copyright{color:var(--text-secondary);font-size:.95rem}.footer-copyright a{color:var(--accent-color);text-decoration:none;font-weight:500;transition:color .2s}.footer-copyright a:hover{color:var(--accent-hover);text-decoration:underline}.support-link{color:var(--accent-color);text-decoration:none;font-size:.9rem;font-weight:500;transition:color .2s}.support-link:hover{color:var(--accent-hover);text-decoration:underline}@media (max-width: 768px){.footer-content{flex-direction:column;text-align:center;gap:.75rem}}@media (max-width: 768px){.app-header{flex-direction:column;gap:1rem;text-align:center;padding:1rem}.header-left{flex-direction:column;gap:.5rem}.header-title{font-size:1.1rem}}