:root{--navy-900:#0a2540;--navy-800:#0d2f52;--navy-700:#123a63;--red-700:#8f0e17;--red-600:#c1121f;--red-500:#d81e2c;--orange-500:#f5a623;--bg-app:#eef1f4;--card-bg:#fff;--text-dark:#14243a;--text-muted:#5b6b7a;--border-color:#e1e5ea;--success-600:#2e7d32;--success-100:#e8f6ec;--danger-600:#c62828;--danger-100:#fdecea;--shadow-card:0 10px 30px #0a25401f;--radius-lg:16px;--radius-md:10px}*{box-sizing:border-box}body,html{margin:0;min-height:100%}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#0a2540;background-color:var(--navy-900);color:#14243a;color:var(--text-dark);font-family:Segoe UI,-apple-system,BlinkMacSystemFont,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;min-height:100vh}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}.home-container{background-color:var(--card-bg);border-radius:var(--radius-lg);border-top:6px solid var(--red-600);box-shadow:var(--shadow-card);margin:0 auto;max-width:620px;padding:2.5rem;text-align:center;width:100%}.home-eyebrow{background:var(--navy-900);border-radius:999px;color:#fff;display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:1px;margin-bottom:1rem;padding:.35rem .9rem;text-transform:uppercase}.home-container h2{color:var(--navy-900);font-size:1.6rem;margin:0 0 1.25rem}.home-container h2 strong{color:var(--red-600)}.home-intro{color:var(--text-muted);line-height:1.6;margin-bottom:1rem}.home-highlight{color:var(--orange-500);font-size:1.15rem;font-weight:700;margin:1rem 0 1.5rem}.home-rules{background:var(--bg-app);border-radius:var(--radius-md);list-style:none;margin:0 0 2rem;padding:1.25rem 1.5rem;text-align:left}.home-rules li{align-items:flex-start;color:var(--text-dark);display:flex;gap:.6rem;line-height:1.4;padding:.4rem 0}.rule-icon{flex-shrink:0}.home-goodluck{color:var(--navy-900);font-weight:700;margin-top:1.25rem}.code-form{display:flex;flex-direction:column;gap:1rem;margin:1.5rem 0 .5rem}.code-input{border:2px solid var(--border-color);border-radius:var(--radius-md);box-sizing:border-box;color:var(--text-dark);font-size:1.1rem;letter-spacing:2px;padding:.9rem 1.1rem;text-align:center;text-transform:uppercase;transition:border-color .2s;width:100%}.code-input:focus{border-color:var(--red-600);outline:none}.code-input::placeholder{color:var(--text-muted);letter-spacing:normal;text-transform:none}.timer-container{align-items:center;background:#ffffff1a;border-radius:999px;display:flex;gap:.6rem;min-width:150px;padding:.5rem .9rem}.timer-container.warning{animation:timer-pulse 1.5s ease-in-out infinite;background:#d81e2c40}.timer-icon{font-size:1.1rem}.timer-body{display:flex;flex:1 1;flex-direction:column}.timer-display{color:#fff;font-size:1.05rem;font-weight:700;margin-bottom:.3rem}.timer-display.warning{color:var(--orange-500)}.progress-bar{background-color:#ffffff40;border-radius:3px;height:5px;overflow:hidden}.progress{background-color:#4fc3f7;height:100%;transition:width 1s linear}.progress.warning{background-color:var(--red-500)}@keyframes timer-pulse{0%,to{box-shadow:0 0 0 0 #d81e2c66}50%{box-shadow:0 0 0 6px #d81e2c00}}.exam-container{background-color:var(--card-bg);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);margin:0 auto;max-width:800px;overflow:hidden;width:100%}.exam-header{align-items:center;background:linear-gradient(120deg,var(--navy-900),var(--navy-800));border-bottom:4px solid var(--red-600);display:flex;gap:1.5rem;justify-content:space-between;padding:1.25rem 1.75rem}.exam-progress-info{flex:1 1;min-width:0}.exam-header h2{color:#fff;font-size:1.1rem;font-weight:600;margin:0 0 .5rem}.exam-progress-bar{background:#fff3;border-radius:3px;height:6px;overflow:hidden}.exam-progress-fill{background:var(--orange-500);height:100%;transition:width .4s ease}.question-container{padding:2rem}.question-text{color:var(--text-dark);font-size:1.1rem;line-height:1.6;margin-bottom:2rem}.options-container{display:flex;flex-direction:column;gap:.9rem;margin-bottom:2rem}.option{align-items:center;border:2px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;display:flex;padding:1rem;transition:all .2s}.option:hover{background-color:#fbeceb;border-color:#f0b8b8}.option.selected{background-color:#fdecea;border-color:var(--red-600)}.option-letter{align-items:center;background-color:var(--navy-900);border-radius:50%;color:#fff;display:flex;flex-shrink:0;font-weight:700;height:28px;justify-content:center;margin-right:1rem;width:28px}.option.selected .option-letter{background-color:var(--red-600);color:#fff}.option-text{color:var(--text-dark);flex:1 1}.submit-btn{background:linear-gradient(120deg,var(--red-600),var(--red-700));border:none;border-radius:999px;box-shadow:0 6px 16px #c1121f59;color:#fff;cursor:pointer;font-size:1rem;font-weight:600;padding:.9rem 2rem;transition:transform .15s ease,box-shadow .15s ease;width:100%}.submit-btn:hover:not(:disabled){box-shadow:0 10px 20px #c1121f66;transform:translateY(-2px)}.submit-btn:disabled{background:#f2c2c2;box-shadow:none;cursor:not-allowed}.result-container{background-color:var(--card-bg);border-radius:var(--radius-lg);border-top:6px solid var(--navy-900);box-shadow:var(--shadow-card);margin:0 auto;max-width:700px;padding:2.5rem;width:100%}.result-container h2{color:var(--navy-900);margin-bottom:1.5rem;text-align:center}.result-container h3{border-bottom:1px solid 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.3s;width:100%}.new-exam-btn:hover{background-color:#2980b9}.exam-status{border-radius:var(--radius-md);font-size:1.2rem;font-weight:700;padding:1.75rem;text-align:center;width:100%}.status-icon{display:block;font-size:2.2rem;margin-bottom:.5rem}.exam-status.approved{background-color:var(--success-100);border-left:5px solid var(--success-600);color:var(--success-600)}.exam-status.approved p{color:var(--success-600);font-size:1rem;font-weight:400;margin-top:.5rem}.exam-status.failed{background-color:var(--danger-100);border-left:5px solid var(--danger-600);color:var(--danger-600)}.exam-status.failed p{color:var(--danger-600);font-size:1rem;font-weight:400;margin-top:.5rem}.error,.loading{background:var(--card-bg);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);color:var(--text-muted);font-size:1.2rem;margin:0 auto;max-width:500px;padding:2rem;text-align:center}.error{color:var(--danger-600)}.App{display:flex;flex-direction:column;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;min-height:100vh}.App-header{align-items:center;background:linear-gradient(120deg,var(--navy-900) 0,var(--navy-800) 100%);border-bottom:4px solid var(--red-600);box-shadow:0 4px 16px #0003;color:#fff;display:flex;flex-wrap:wrap;gap:1.5rem;justify-content:center;padding:1.1rem 2rem;text-align:center}.header-logo{filter:brightness(0) invert(1);height:48px;width:auto}.header-title{font-size:1.5rem;font-weight:700;letter-spacing:.5px;margin:0}main{align-items:flex-start;display:flex;flex:1 1;justify-content:center;margin:0 auto;max-width:1200px;padding:2.5rem 1.5rem;width:100%}footer{background:var(--navy-900);color:#ffffffbf;font-size:.85rem;margin-top:auto;padding:1rem;text-align:center}footer p{margin:0}.create-exam-container{background-color:var(--card-bg);border-radius:var(--radius-lg);border-top:6px solid var(--navy-900);box-shadow:var(--shadow-card);margin:0 auto;max-width:560px;padding:2.5rem;text-align:center;width:100%}.create-exam-eyebrow{background:var(--navy-900);border-radius:999px;color:#fff;display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:1px;margin-bottom:1rem;padding:.35rem .9rem;text-transform:uppercase}.create-exam-container h2{color:var(--navy-900);margin-bottom:1rem}.create-exam-container p{color:var(--text-muted);line-height:1.6;margin-bottom:2rem}.create-exam-btn{background:linear-gradient(120deg,var(--red-600),var(--red-700));border:none;border-radius:999px;box-shadow:0 6px 16px #c1121f59;color:#fff;cursor:pointer;font-size:1rem;font-weight:600;padding:.9rem 2.2rem;transition:transform .15s ease,box-shadow .15s ease}.create-exam-btn:hover:not(:disabled){box-shadow:0 10px 20px #c1121f66;transform:translateY(-2px)}.create-exam-btn:disabled{background:#f2c2c2;box-shadow:none;cursor:not-allowed}.error-message{color:var(--danger-600);font-weight:600;margin-top:1rem}
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