.pin-modal-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000;backdrop-filter:blur(5px);animation:fadeIn .2s ease-out}.pin-modal-content{background:#fff;padding:2.5rem;border-radius:12px;box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a;text-align:center;width:100%;max-width:400px;animation:slideUp .3s ease-out}.pin-modal-title{font-size:1.5rem;font-weight:700;color:#1a202c;margin-bottom:.5rem}.pin-modal-subtitle{font-size:.95rem;color:#718096;margin-bottom:2rem}.pin-input-container{display:flex;justify-content:center;gap:1rem;margin-bottom:2rem}.pin-input{width:50px;height:60px;font-size:2rem;text-align:center;border:2px solid #e2e8f0;border-radius:8px;font-weight:700;color:#2d3748;transition:all .2s;background:#fff}.pin-input:focus{border-color:#3182ce;outline:none;box-shadow:0 0 0 3px #3182ce1a}.pin-input.error{border-color:#e53e3e;animation:shake .4s cubic-bezier(.36,.07,.19,.97) both}.pin-actions{display:flex;justify-content:space-between;gap:1rem}.btn-cancel,.btn-submit{padding:.75rem 1.5rem;border-radius:6px;font-weight:600;cursor:pointer;transition:all .2s;flex:1}.btn-cancel{background-color:#f7fafc;border:1px solid #cbd5e0;color:#4a5568}.btn-cancel:hover{background-color:#edf2f7}.btn-submit{background-color:#3182ce;border:none;color:#fff}.btn-submit:hover{background-color:#2c5282}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes shake{10%,90%{transform:translate3d(-1px,0,0)}20%,80%{transform:translate3d(2px,0,0)}30%,50%,70%{transform:translate3d(-4px,0,0)}40%,60%{transform:translate3d(4px,0,0)}}.warning-text{color:#dd6b20;font-size:.85rem;margin-top:-1.5rem;margin-bottom:1.5rem}.lockout-message{margin-bottom:2rem;padding:1rem;background-color:#fff5f5;border-radius:8px;border:1px solid #fed7d7}.error-text{color:#e53e3e;font-weight:700;margin-bottom:.5rem}:root{--text-primary: #1a202c;--text-secondary: #718096;--bg-page: #f7fafc;--bg-card: #ffffff;--accent: #3182ce;--border: #e2e8f0}.home-view{min-height:100vh;background-color:var(--bg-page);color:var(--text-primary);display:flex;flex-direction:column}.home-header.full-height{flex:1;display:flex;align-items:center;justify-content:center;background:var(--bg-card);padding:2rem;text-align:center}.center-content{max-width:600px;width:100%}.home-header h1{font-size:3rem;font-weight:800;letter-spacing:-.025em;margin:0 0 1rem;color:var(--text-primary)}.home-subtitle{font-size:1.25rem;color:var(--text-secondary);margin:0 auto 3rem;line-height:1.6}.btn-start-hero{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 2.5rem;background-color:var(--accent);color:#fff;border:none;font-size:1rem;font-weight:600;border-radius:6px;cursor:pointer;transition:all .2s;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f}.btn-start-hero.large{padding:1rem 3rem;font-size:1.125rem}.btn-start-hero:hover{transform:translateY(-2px);box-shadow:0 10px 15px -3px #0000001a,0 4px 6px -2px #0000000d;background-color:#2c5282}.btn-start-hero:active{transform:translateY(0)}@media(max-width:768px){.home-header h1{font-size:2.25rem}.home-subtitle{font-size:1.125rem}}.mode-selection{display:flex;gap:2rem;margin-top:3rem;justify-content:center;flex-wrap:wrap}.mode-card{background:#fff;border:1px solid var(--border);padding:2rem;border-radius:12px;width:300px;text-align:center;transition:transform .2s,background .2s;box-shadow:0 4px 6px -1px #0000000d}.mode-card:hover{transform:translateY(-5px);box-shadow:0 10px 15px -3px #0000001a}.mode-card h3{margin-top:0;font-size:1.5rem;color:var(--text-primary);margin-bottom:1rem}.mode-card p{color:var(--text-secondary);margin-bottom:2rem;line-height:1.6;min-height:4.8rem}.btn-start-hero.exam-mode{background:linear-gradient(135deg,#e53e3e,#c53030)}.btn-start-hero.exam-mode:hover{background:#c53030}.btn-start-hero.practice-mode{background:linear-gradient(135deg,#38a169,#2f855a)}.btn-start-hero.practice-mode:hover{background:#2f855a}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;color:var(--text-primary)}.loading-spinner{width:40px;height:40px;border:3px solid rgba(0,0,0,.1);border-radius:50%;border-top-color:var(--accent);animation:spin 1s ease-in-out infinite;margin-bottom:1rem}@keyframes spin{to{transform:rotate(360deg)}}#root{width:100%;min-height:100vh;margin:0;padding:0}.App{width:100%;min-height:100vh;margin:0;padding:0;background-color:#1e1e1e}.loading-fallback{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;background-color:#1e1e1e;color:#4fc3f7}.loading-fallback p{margin-top:1rem;font-family:Consolas,Monaco,monospace;font-size:1rem}.loading-spinner{width:40px;height:40px;border:3px solid #333;border-top:3px solid #4fc3f7;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}*{margin:0;padding:0;box-sizing:border-box}:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:dark;color:#ffffffde;background-color:#1e1e1e;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;padding:0;width:100%;min-height:100vh}html,#root{width:100%;min-height:100%}