*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #111827;--bg-secondary: #1f2937;--bg-card: #374151;--text-primary: #f9fafb;--text-secondary: #9ca3af;--text-muted: #6b7280;--accent: #3b82f6;--accent-hover: #2563eb;--success: #4ade80;--warning: #fbbf24;--danger: #f87171;--radius: 12px;--radius-sm: 8px;--safe-bottom: env(safe-area-inset-bottom, 16px)}html,body{height:100%;overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased}#root{height:100%}.app{height:100%;max-width:480px;margin:0 auto;position:relative;overflow:hidden}.screen{height:100%;display:flex;flex-direction:column;position:relative}.screen-content{flex:1;padding:24px 20px;overflow-y:auto;display:flex;flex-direction:column}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:16px;color:var(--text-secondary)}.loading-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:#000000b3;color:var(--text-secondary);z-index:20}.loading-spinner{width:40px;height:40px;border:3px solid var(--bg-card);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.btn-primary{background:var(--accent);color:#fff;border:none;padding:16px 32px;border-radius:var(--radius);font-size:17px;font-weight:600;cursor:pointer;width:100%;transition:background .2s}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:active{transform:scale(.98)}.btn-secondary{background:var(--bg-card);color:var(--text-primary);border:none;padding:16px 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var(--safe-bottom));background:#000c;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.setup-actions{display:flex;flex-direction:column;gap:12px;align-items:center}.setup-hint{text-align:center;color:var(--text-secondary);font-size:14px;line-height:1.5}.dev-info{color:var(--warning);font-size:12px;font-family:monospace;text-align:center;margin-bottom:8px}.dev-info-top{position:absolute;top:60px;left:12px;right:12px;color:var(--warning);font-size:11px;font-family:monospace;background:#000000b3;padding:4px 8px;border-radius:4px;z-index:10}.validation-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;pointer-events:none}.guide-frame{width:70%;height:75%;border:2px dashed rgba(255,255,255,.3);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;transition:border-color 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14px;margin-top:8px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.tips-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:4px}.tip-item{font-size:13px;color:var(--text-secondary);line-height:1.4;padding-left:16px;position:relative}.tip-item:before{content:"•";position:absolute;left:4px;color:var(--accent)}.rest-display{display:flex;flex-direction:column;align-items:center}.next-exercise-display{display:flex;flex-direction:column;align-items:center;animation:fadeIn .3s ease-out}.workout-complete-msg{display:flex;flex-direction:column;align-items:center;gap:12px}.complete-icon{font-size:64px}.complete-text{font-size:24px;font-weight:700;color:var(--success)}.workout-bottom{position:absolute;bottom:0;left:0;right:0;padding:16px 20px;padding-bottom:calc(16px + var(--safe-bottom));background:linear-gradient(to 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var(--accent)}.round-text{font-size:13px;color:var(--text-secondary);margin-left:4px}.workout-controls{display:flex;gap:8px;justify-content:center}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}.modal{background:var(--bg-secondary);border-radius:var(--radius);padding:28px 24px;max-width:360px;width:100%;text-align:center}.modal h3{font-size:20px;margin-bottom:8px}.modal p{color:var(--text-secondary);font-size:14px;margin-bottom:20px}.result-screen{background:var(--bg-primary)}.result-content{flex:1;padding:32px 20px;padding-bottom:calc(32px + var(--safe-bottom));overflow-y:auto;display:flex;flex-direction:column;gap:24px}.result-achievement{text-align:center;padding:24px 0}.achievement-icon{font-size:56px;margin-bottom:12px}.achievement-detail{color:var(--text-secondary);font-size:16px;margin-top:4px}.exercise-summary h3{font-size:18px;margin-bottom:12px}.summary-row{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;background:var(--bg-secondary);border-radius:var(--radius-sm);margin-bottom:8px}.summary-name{font-weight:500;font-size:14px;flex:1}.summary-reps{font-size:14px}.reps-done{font-weight:700;color:var(--success);font-size:18px}.reps-target{color:var(--text-muted)}.summary-issue{font-size:11px;color:var(--warning);margin-left:8px}.coach-insight{background:var(--bg-secondary);border-radius:var(--radius);padding:16px}.insight-header{font-size:14px;color:var(--accent);font-weight:600;margin-bottom:8px}.insight-text{font-size:15px;line-height:1.5;color:var(--text-primary)}.improvement-focus{background:#fbbf241a;border:1px solid rgba(251,191,36,.3);border-radius:var(--radius);padding:14px 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h2{font-size:24px;font-weight:700;margin-bottom:4px}.screen-desc{color:var(--text-secondary);font-size:15px;margin-bottom:8px}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--bg-card);border-radius:2px}