:root{--bg-primary: #ffffff;--bg-secondary: #f3f4f6;--bg-card: #ffffff;--text-primary: #111827;--text-secondary: #6b7280;--accent: #dc2626;--accent-hover: #b91c1c;--success: #16a34a;--fail: #dc2626;--border: #e5e7eb;--nav-bg: #ffffff}[data-theme=dark]{--bg-primary: #111827;--bg-secondary: #1f2937;--bg-card: #1f2937;--text-primary: #f9fafb;--text-secondary: #9ca3af;--accent: #ef4444;--accent-hover: #dc2626;--success: #22c55e;--fail: #ef4444;--border: #374151;--nav-bg: #1f2937}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;min-height:100vh;min-height:-webkit-fill-available}html{background:var(--nav-bg)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app{position:fixed;top:0;left:0;right:0;bottom:0;display:flex;flex-direction:column;max-width:480px;margin:0 auto}.app-content{flex:1;overflow-y:auto;padding:16px 16px 80px}.screen-title{font-size:24px;font-weight:700;margin-bottom:20px}.navigation{position:fixed;left:0;right:0;bottom:0;display:flex;justify-content:center;background:var(--nav-bg);border-top:1px solid var(--border);padding-top:8px;padding-bottom:max(8px,env(safe-area-inset-bottom,34px));padding-left:env(safe-area-inset-left,0px);padding-right:env(safe-area-inset-right,0px)}.nav-btn{flex:1;max-width:120px;display:flex;flex-direction:column;align-items:center;gap:4px;padding:8px;background:none;border:none;color:var(--text-secondary);cursor:pointer;transition:color .2s}.nav-btn.active{color:var(--accent)}.nav-icon{width:24px;height:24px}.nav-label{font-size:12px;font-weight:500}.workout-screen.start{display:flex;flex-direction:column;align-items:center;padding-top:40px}.workout-selector{display:flex;gap:12px;margin-bottom:16px}.workout-type-btn{display:flex;flex-direction:column;align-items:center;padding:16px 24px;background:var(--bg-card);border:2px solid var(--border);border-radius:12px;cursor:pointer;transition:all .2s}.workout-type-btn.active{border-color:var(--accent);background:var(--bg-secondary)}.workout-letter{font-size:32px;font-weight:700;color:var(--accent)}.workout-exercises{font-size:12px;color:var(--text-secondary);margin-top:4px}.suggestion-note{font-size:14px;color:var(--text-secondary);margin-bottom:16px}.start-btn{padding:16px 48px;font-size:18px;font-weight:600;background:var(--accent);color:#fff;border:none;border-radius:12px;cursor:pointer;transition:background .2s}.start-btn:hover{background:var(--accent-hover)}.workout-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.cancel-btn{padding:8px 16px;font-size:14px;background:none;border:1px solid var(--border);border-radius:8px;color:var(--text-secondary);cursor:pointer}.exercises-list{display:flex;flex-direction:column;gap:16px}.exercise-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:16px}.exercise-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.exercise-name{font-size:18px;font-weight:600}.exercise-weight{font-size:20px;font-weight:700;color:var(--accent)}.exercise-sets{display:flex;align-items:center;gap:12px}.sets-label{font-size:14px;color:var(--text-secondary);min-width:40px}.set-buttons{display:flex;gap:8px;flex:1}.set-button-container{position:relative}.set-button{width:48px;height:48px;border-radius:50%;border:2px solid var(--border);background:var(--bg-secondary);font-size:18px;font-weight:600;cursor:pointer;transition:all .2s;color:var(--text-primary)}.set-button.success{background:var(--success);border-color:var(--success);color:#fff}.set-button.fail{background:var(--fail);border-color:var(--fail);color:#fff}.set-button.empty{background:var(--bg-secondary);color:var(--text-secondary)}.rep-picker-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:100}.rep-picker{background:var(--bg-card);border-radius:16px;padding:20px;min-width:280px}.rep-picker-title{font-size:18px;font-weight:600;text-align:center;margin-bottom:16px}.rep-picker-options{display:flex;gap:8px;justify-content:center}.rep-option{width:44px;height:44px;border-radius:50%;border:2px solid var(--border);background:var(--bg-secondary);font-size:18px;font-weight:600;cursor:pointer;color:var(--text-primary)}.rep-option.target{border-color:var(--success)}.exercise-history{margin-top:12px;padding-top:12px;border-top:1px solid var(--border)}.history-title{font-size:12px;font-weight:600;color:var(--text-secondary);margin-bottom:4px}.history-entry{font-size:12px;color:var(--text-secondary);line-height:1.5}.rest-timer{margin-top:16px;text-align:center}.rest-timer.active{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:16px}.timer-display{font-size:48px;font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:12px}.timer-controls{display:flex;gap:8px;justify-content:center}.timer-button{padding:12px 24px;font-size:16px;font-weight:600;background:var(--accent);color:#fff;border:none;border-radius:8px;cursor:pointer}.timer-button.secondary{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border)}.finish-btn{margin-top:24px;width:100%;padding:16px;font-size:18px;font-weight:600;background:var(--success);color:#fff;border:none;border-radius:12px;cursor:pointer}.history-screen.empty{text-align:center;padding-top:40px}.empty-message{color:var(--text-secondary)}.history-list{display:flex;flex-direction:column;gap:12px}.history-workout{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:16px}.history-workout-header{display:flex;justify-content:space-between;margin-bottom:8px}.history-date{font-weight:600}.history-type{color:var(--accent);font-weight:600}.history-exercises{display:flex;flex-direction:column;gap:4px}.history-exercise{font-size:14px;padding-left:12px;border-left:3px solid var(--border)}.history-exercise.success{border-left-color:var(--success)}.history-exercise.fail{border-left-color:var(--fail)}.settings-section{margin-bottom:24px}.section-title{font-size:14px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;margin-bottom:12px}.section-description{font-size:14px;color:var(--text-secondary);margin-bottom:12px}.setting-row{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--border)}.setting-label{font-size:16px}.toggle-btn{padding:8px 16px;font-size:14px;font-weight:600;background:var(--bg-secondary);border:1px solid var(--border);border-radius:8px;cursor:pointer;color:var(--text-primary)}.toggle-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}.weight-input-group{display:flex;align-items:center;gap:8px}.weight-input{width:80px;padding:8px 12px;font-size:16px;text-align:right;border:1px solid var(--border);border-radius:8px;background:var(--bg-secondary);color:var(--text-primary)}.weight-unit{font-size:14px;color:var(--text-secondary)}.data-buttons{display:flex;flex-direction:column;gap:8px}.data-btn{padding:12px 16px;font-size:16px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:8px;cursor:pointer;color:var(--text-primary);text-align:center}.about-text{font-size:14px;color:var(--text-secondary);line-height:1.5}.about-text.small{font-size:12px;margin-top:8px}@supports (padding: max(0px)){.app-content{padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right));padding-top:max(16px,env(safe-area-inset-top))}}