*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:#1a1a1a;color:#fff;display:flex;justify-content:center;align-items:center;min-height:100vh;padding:20px}.container{max-width:800px;width:100%}h1{text-align:center;margin-bottom:20px;font-size:2rem;font-weight:600}.mode-selector{display:flex;gap:10px;justify-content:center;margin-bottom:30px}.mode-btn{padding:12px 24px;font-size:1rem;font-weight:500;border:2px solid #444;background-color:#2a2a2a;color:#888;border-radius:8px;cursor:pointer;transition:all .2s ease}.mode-btn:hover{background-color:#333;border-color:#555}.mode-btn.active{background-color:#2196f3;color:#fff;border-color:#2196f3}.camera-toggle-container{display:flex;justify-content:center;margin-bottom:20px}.camera-toggle-btn{padding:10px 20px;font-size:.9rem;font-weight:500;border:2px solid #666;background-color:#2a2a2a;color:#fff;border-radius:8px;cursor:pointer;transition:all .2s ease}.camera-toggle-btn:hover{background-color:#333;border-color:#777}.camera-toggle-btn.active{background-color:#4caf50;border-color:#4caf50}.video-container{position:relative;width:100%;max-width:640px;margin:0 auto 30px;border-radius:12px;overflow:hidden;box-shadow:0 4px 20px #00000080}#webcam{width:100%;height:auto;display:block;transform:scaleX(-1)}.video-container.hidden{display:none}.status{display:flex;gap:20px;margin-bottom:20px;justify-content:center}.score-display,.focus-level{background-color:#2a2a2a;padding:20px 40px;border-radius:12px;text-align:center;min-width:200px}.score-label,.level-label{font-size:.9rem;color:#888;margin-bottom:10px}.score-value{font-size:3rem;font-weight:700;color:#4caf50}.level-value{font-size:1.5rem;font-weight:600;color:#2196f3}.info{text-align:center;color:#888;font-size:.9rem;padding:15px;background-color:#2a2a2a;border-radius:8px}.nav-links{margin-bottom:20px}.nav-link{display:inline-block;padding:8px 16px;font-size:.9rem;color:#2196f3;text-decoration:none;border-radius:6px;transition:background-color .2s ease}.nav-link:hover{background-color:#2a2a2a}.spot-state{text-align:center}.spot-description{background-color:#2a2a2a;padding:30px;border-radius:12px;margin-bottom:30px}.spot-description p{font-size:1.1rem;line-height:1.6;color:#ccc;margin-bottom:10px}.spot-description p:last-child{margin-bottom:0}.spot-start-btn{padding:16px 48px;font-size:1.2rem;font-weight:600;background-color:#4caf50;color:#fff;border:none;border-radius:12px;cursor:pointer;transition:all .2s ease}.spot-start-btn:hover{background-color:#45a049;transform:translateY(-2px);box-shadow:0 4px 12px #4caf504d}.spot-start-btn:active{transform:translateY(0)}.spot-timer-container{background-color:#2a2a2a;padding:30px;border-radius:12px;margin:30px auto;max-width:400px}.spot-timer-label{font-size:.9rem;color:#888;margin-bottom:10px}.spot-timer{font-size:4rem;font-weight:700;color:#2196f3;margin-bottom:20px}.spot-progress-bar{width:100%;height:12px;background-color:#1a1a1a;border-radius:6px;overflow:hidden}.spot-progress-fill{height:100%;background-color:#2196f3;transition:width .1s linear;border-radius:6px}.spot-cancel-btn{padding:12px 32px;font-size:1rem;font-weight:500;background-color:#666;color:#fff;border:none;border-radius:8px;cursor:pointer;transition:all .2s ease}.spot-cancel-btn:hover{background-color:#777}.spot-result-container{background-color:#2a2a2a;padding:40px;border-radius:12px;max-width:500px;margin:0 auto}.spot-result-title{font-size:1.5rem;font-weight:600;color:#fff;margin-bottom:30px}.spot-result-main{margin-bottom:30px}.spot-result-level{font-size:2.5rem;font-weight:700;margin-bottom:20px}.spot-result-score-container{display:flex;justify-content:center;align-items:baseline;gap:10px}.spot-result-label{font-size:1rem;color:#888}.spot-result-score{font-size:3rem;font-weight:700}.spot-result-details{background-color:#1a1a1a;padding:20px;border-radius:8px;margin-bottom:30px}.spot-result-perclos{font-size:1.1rem;color:#ccc}.spot-result-details-label{color:#888;margin-right:8px}.spot-retry-btn{padding:14px 40px;font-size:1.1rem;font-weight:600;background-color:#2196f3;color:#fff;border:none;border-radius:10px;cursor:pointer;transition:all .2s ease}.spot-retry-btn:hover{background-color:#1976d2;transform:translateY(-2px);box-shadow:0 4px 12px #2196f34d}.spot-retry-btn:active{transform:translateY(0)}