.exercise-area{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:40vh;max-height:70vh;position:relative;padding:var(--space-lg);-webkit-user-select:none;user-select:none}.exercise-area>.exercise-header{align-self:stretch}.stimulus{display:flex;align-items:center;justify-content:center;width:100%;min-height:200px;font-family:var(--font-heading);font-size:var(--text-3xl);font-weight:var(--weight-bold);color:var(--text);text-align:center;position:relative}.stimulus--large{font-size:4rem}.stimulus--xlarge{font-size:6rem}.feedback-flash{position:fixed;inset:0;pointer-events:none;z-index:var(--z-overlay);opacity:0;transition:opacity var(--transition-fast)}.feedback-flash--correct{background-color:#4ecdc426;opacity:1;animation:feedbackFlash .4s ease forwards}.feedback-flash--incorrect{background-color:#ff6b6b26;opacity:1;animation:feedbackFlash .4s ease forwards}@keyframes feedbackFlash{0%{opacity:1}to{opacity:0}}.exercise-controls{display:flex;align-items:center;justify-content:center;gap:var(--space-md);padding:var(--space-lg);width:100%}.exercise-controls--bottom{position:absolute;bottom:0;left:0;right:0}.exercise-header{display:flex;align-items:center;justify-content:space-between;gap:var(--space-md);padding:var(--space-md) var(--space-lg);width:100%}.exercise-title{flex:1;text-align:center;font-family:var(--font-heading);font-size:var(--text-sm);font-weight:var(--weight-semibold);line-height:1.3;min-width:0}.exercise-header__back{width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-full);color:var(--text-secondary);transition:background-color var(--transition-fast)}.exercise-header__back:hover{background-color:var(--surface-2)}.exercise-header__title{font-family:var(--font-heading);font-size:var(--text-md);font-weight:var(--weight-semibold)}.exercise-header__info{font-size:var(--text-sm);color:var(--text-secondary)}.exercise-stats{display:flex;align-items:center;justify-content:center;gap:var(--space-xl);padding:var(--space-sm) var(--space-lg)}.exercise-stat{display:flex;flex-direction:column;align-items:center;gap:2px}.exercise-stat__value{font-family:var(--font-heading);font-size:var(--text-xl);font-weight:var(--weight-bold);color:var(--text)}.exercise-stat__label{font-size:var(--text-xs);color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}[data-exercise=go-no-go] .stimulus{width:120px;height:120px;border-radius:var(--radius-full);min-height:auto;transition:background-color var(--transition-fast)}[data-exercise=go-no-go] .stimulus--go{background-color:var(--success);box-shadow:0 0 40px #4ecdc44d}[data-exercise=go-no-go] .stimulus--no-go{background-color:var(--error);box-shadow:0 0 40px #ff6b6b4d}[data-exercise=go-no-go] .tap-zone{position:absolute;inset:0;cursor:pointer}[data-exercise=n-back] .stimulus{font-size:5rem;font-family:var(--font-heading);color:var(--primary);text-shadow:0 0 30px var(--primary-glow)}[data-exercise=n-back] .queue{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-md)}[data-exercise=n-back] .queue__item{width:36px;height:36px;display:flex;align-items:center;justify-content:center;font-size:var(--text-sm);font-weight:var(--weight-semibold);color:var(--text-muted);background-color:var(--surface-2);border-radius:var(--radius-md)}[data-exercise=n-back] .queue__item--current{background-color:var(--primary);color:var(--bg);box-shadow:var(--shadow-glow)}[data-exercise=n-back] .queue__item--target{border:2px solid var(--secondary);color:var(--secondary)}[data-exercise=flanker] .arrow-row{display:flex;align-items:center;justify-content:center;gap:var(--space-md)}[data-exercise=flanker] .arrow{font-size:2.5rem;font-weight:var(--weight-bold);color:var(--text-secondary);transition:color var(--transition-fast)}[data-exercise=flanker] .arrow--target{color:var(--primary);font-size:3rem;text-shadow:0 0 20px var(--primary-glow)}[data-exercise=flanker] .response-buttons{display:flex;gap:var(--space-xl)}[data-exercise=flanker] .response-btn{width:80px;height:80px;border-radius:var(--radius-full);background-color:var(--surface-2);display:flex;align-items:center;justify-content:center;font-size:2rem;color:var(--text);transition:background-color var(--transition-fast),transform var(--transition-fast)}[data-exercise=flanker] .response-btn:active{transform:scale(.9);background-color:var(--primary)}[data-exercise=visual-search] .search-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:var(--space-sm);padding:var(--space-md);max-width:320px;width:100%}[data-exercise=visual-search] .search-grid__item{aspect-ratio:1;display:flex;align-items:center;justify-content:center;font-size:var(--text-xl);background-color:var(--surface-2);border-radius:var(--radius-md);cursor:pointer;transition:background-color var(--transition-fast),transform var(--transition-fast)}[data-exercise=visual-search] .search-grid__item:hover{background-color:var(--surface-3)}[data-exercise=visual-search] .search-grid__item:active{transform:scale(.9)}[data-exercise=visual-search] .search-grid__item--found{background-color:var(--success-subtle);border:2px solid var(--success)}[data-exercise=breathing] .breathing-circle{width:180px;height:180px;border-radius:var(--radius-full);background:radial-gradient(circle at 40% 40%,var(--primary-hover),var(--primary),var(--primary-active));box-shadow:0 0 60px var(--primary-glow);display:flex;align-items:center;justify-content:center;transition:transform var(--duration-slow) ease-in-out}[data-exercise=breathing] .breathing-circle--inhale{animation:breathe-in 4s ease-in-out forwards}[data-exercise=breathing] .breathing-circle--exhale{animation:breathe-out 4s ease-in-out forwards}@keyframes breathe-in{0%{transform:scale(1)}to{transform:scale(1.5)}}@keyframes breathe-out{0%{transform:scale(1.5)}to{transform:scale(1)}}[data-exercise=breathing] .breathing-label{font-family:var(--font-heading);font-size:var(--text-lg);font-weight:var(--weight-semibold);color:var(--bg);text-align:center}[data-exercise=breathing] .breathing-ring{position:absolute;width:220px;height:220px;border-radius:var(--radius-full);border:2px solid var(--primary-subtle)}[data-exercise=pomodoro] .timer-ring{width:240px;height:240px;position:relative;display:flex;align-items:center;justify-content:center}[data-exercise=pomodoro] .timer-ring__svg{position:absolute;width:100%;height:100%;transform:rotate(-90deg)}[data-exercise=pomodoro] .timer-ring__circle{fill:none;stroke:var(--surface-2);stroke-width:4}[data-exercise=pomodoro] .timer-ring__progress{fill:none;stroke:var(--primary);stroke-width:4;stroke-linecap:round;transition:stroke-dashoffset var(--transition-normal)}[data-exercise=pomodoro] .timer-ring__time{font-family:var(--font-heading);font-size:var(--text-3xl);font-weight:var(--weight-bold);color:var(--text)}[data-exercise=pomodoro] .timer-ring__label{font-size:var(--text-sm);color:var(--text-secondary);margin-top:var(--space-xs)}[data-exercise=pomodoro] .pomodoro-phases{display:flex;align-items:center;gap:var(--space-xs);margin-top:var(--space-lg)}[data-exercise=pomodoro] .pomodoro-phase{width:8px;height:8px;border-radius:var(--radius-full);background-color:var(--surface-2)}[data-exercise=pomodoro] .pomodoro-phase--active{background-color:var(--primary);box-shadow:0 0 8px var(--primary-glow)}[data-exercise=pomodoro] .pomodoro-phase--done{background-color:var(--success)}.countdown-overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background-color:#0f0f1ae6;z-index:var(--z-overlay)}.countdown-overlay__number{font-family:var(--font-heading);font-size:6rem;font-weight:var(--weight-bold);color:var(--primary);animation:countDown 1s ease-out}.results{display:flex;flex-direction:column;align-items:center;gap:var(--space-lg);padding:var(--space-xl);text-align:center}.results__score{font-family:var(--font-heading);font-size:4rem;font-weight:var(--weight-bold);color:var(--primary)}.results__label{font-size:var(--text-lg);color:var(--text-secondary)}.results__stats{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-md);width:100%;max-width:320px}.results__stat{background-color:var(--surface);border-radius:var(--radius-xl);padding:var(--space-md);text-align:center;box-shadow:var(--shadow-sm)}.results__stat-value{font-family:var(--font-heading);font-size:var(--text-xl);font-weight:var(--weight-bold);color:var(--text)}.results__stat-label{font-size:var(--text-xs);color:var(--text-muted);margin-top:var(--space-xs)}.exercise-timer{font-family:var(--font-heading);font-size:var(--text-lg);font-weight:var(--weight-bold);color:var(--text);font-variant-numeric:tabular-nums;letter-spacing:.02em}.exercise-trial-counter{font-family:var(--font-heading);font-size:var(--text-sm);font-weight:var(--weight-medium);color:var(--text-secondary);font-variant-numeric:tabular-nums}.exercise-stimulus-area{display:flex;align-items:center;justify-content:center;min-height:200px;width:100%;position:relative;user-select:none;-webkit-user-select:none}.exercise-level-label{font-family:var(--font-heading);font-size:var(--text-md);font-weight:var(--weight-semibold);color:var(--primary);text-transform:uppercase;letter-spacing:.05em}.exercise-header-info{font-size:var(--text-sm);color:var(--text-secondary)}.countdown-number{font-family:var(--font-heading);font-size:6rem;font-weight:var(--weight-bold);color:var(--primary)}.countdown-animate{animation:countDown .8s ease-out}.nback-letter{font-family:var(--font-heading);font-size:5rem;font-weight:var(--weight-bold);color:var(--primary);text-shadow:0 0 30px var(--primary-glow);line-height:1;min-height:6rem;display:flex;align-items:center;justify-content:center}.nback-letter-fade{animation:nbackFadeIn .3s ease-out}@keyframes nbackFadeIn{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}.nback-stimulus-area{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:200px;user-select:none;-webkit-user-select:none}.nback-queue{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-md);min-height:44px}.nback-queue-letter{width:36px;height:36px;display:flex;align-items:center;justify-content:center;font-family:var(--font-heading);font-size:var(--text-sm);font-weight:var(--weight-semibold);color:var(--text-muted);background-color:var(--surface-2);border-radius:var(--radius-md)}.nback-match-btn{min-width:160px;min-height:48px;padding:var(--space-sm) var(--space-xl);font-family:var(--font-heading);font-size:var(--text-md);font-weight:var(--weight-semibold);color:var(--bg);background-color:var(--primary);border:none;border-radius:var(--radius-lg);cursor:pointer;touch-action:manipulation;user-select:none;-webkit-user-select:none;transition:background-color var(--transition-fast),transform var(--transition-fast)}.nback-match-btn:hover{background-color:var(--primary-hover)}.nback-match-btn:active{transform:scale(.95);background-color:var(--primary-active)}.nback-controls{display:flex;align-items:center;justify-content:center;padding:var(--space-lg);width:100%}.flanker-btn{min-width:80px;min-height:64px;padding:.75rem 2rem;font-size:2.5rem;line-height:1;border:2px solid var(--surface-3);border-radius:var(--radius-lg);background-color:var(--surface-2);color:var(--text);cursor:pointer;touch-action:manipulation;user-select:none;-webkit-user-select:none;transition:background-color var(--transition-fast),transform var(--transition-fast)}.flanker-btn:hover{background-color:var(--surface-3)}.flanker-btn:active{transform:scale(.9);background-color:var(--primary);color:var(--bg)}.flanker-buttons{display:flex;justify-content:center;gap:var(--space-xl);margin-top:var(--space-xl)}.visual-search-grid{display:grid;gap:var(--space-sm);justify-items:center;align-items:center;margin:var(--space-lg) auto;padding:var(--space-md)}.visual-search-no-target-btn{display:block;margin:var(--space-md) auto;min-height:48px;padding:.75rem 2rem;font-family:var(--font-heading);font-size:var(--text-md);font-weight:var(--weight-semibold);color:var(--text);background-color:var(--surface-2);border:2px solid var(--surface-3);border-radius:var(--radius-lg);cursor:pointer;touch-action:manipulation;user-select:none;-webkit-user-select:none;transition:background-color var(--transition-fast),transform var(--transition-fast)}.visual-search-no-target-btn:hover{background-color:var(--surface-3)}.visual-search-no-target-btn:active{transform:scale(.95)}.visual-search-no-target-btn[disabled]{opacity:.4;cursor:not-allowed;pointer-events:none}.breathing-phase-label{text-align:center;font-family:var(--font-heading);font-size:var(--text-xl);font-weight:var(--weight-semibold);margin-bottom:var(--space-xl);color:var(--text);letter-spacing:.05em;text-transform:uppercase}.breathing-circle-container{display:flex;align-items:center;justify-content:center;min-height:250px}.breathing-circle{width:150px;height:150px;border-radius:var(--radius-full);background:linear-gradient(135deg,var(--primary-hover) 0%,var(--primary) 50%,var(--primary-active) 100%);box-shadow:0 0 20px 10px var(--primary-glow)}.breathing-cycle-counter{text-align:center;margin-top:var(--space-xl);font-family:var(--font-heading);font-size:var(--text-sm);color:var(--text-secondary)}.breathing-info{text-align:center;font-size:var(--text-sm);color:var(--text-muted);margin-top:var(--space-md)}.pomodoro-ring-container{position:relative;display:flex;align-items:center;justify-content:center}.pomodoro-timer-text{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-family:var(--font-heading);font-size:var(--text-3xl);font-weight:var(--weight-bold);font-variant-numeric:tabular-nums;color:var(--text)}.pomodoro-quote{text-align:center;margin-top:var(--space-lg);padding:0 var(--space-md);font-size:var(--text-base);font-style:italic;color:var(--text-secondary);line-height:var(--leading-normal)}.pomodoro-controls{display:flex;gap:var(--space-md);justify-content:center;margin-top:var(--space-lg)}.gng-stimulus-area{cursor:pointer}.gng-stimulus{width:100px;height:100px;margin:0 auto;transition:transform .1s ease;animation:stimulusPopIn .2s cubic-bezier(.34,1.56,.64,1) forwards}.gng-stimulus--go{border-radius:var(--radius-full);background-color:var(--gng-go-color, var(--success));background:radial-gradient(circle at 35% 35%,color-mix(in srgb,var(--gng-go-color, var(--success)) 80%,white),var(--gng-go-color, var(--success)));box-shadow:0 0 24px #4ecdc44d;box-shadow:0 0 24px color-mix(in srgb,var(--gng-go-color, var(--success)) 40%,transparent)}.gng-stimulus--nogo{border-radius:var(--radius-sm);background:repeating-linear-gradient(45deg,transparent,transparent 6px,rgba(0,0,0,.1) 6px,rgba(0,0,0,.1) 8px),var(--error);box-shadow:0 0 20px var(--error-subtle)}.flanker-arrow{font-size:3rem;margin:0 .25rem;display:inline-block;user-select:none;line-height:1;color:var(--text-secondary)}.flanker-arrow--target{color:var(--primary);transform:scale(1.3);text-shadow:0 0 12px var(--primary-glow)}.flanker-arrow--neutral{color:var(--text-muted)}.flanker-row{display:flex;align-items:center;justify-content:center;gap:.3rem;animation:flankerSlideIn .2s ease forwards}.vs-item{cursor:pointer;touch-action:manipulation;user-select:none;-webkit-user-select:none;transition:transform .1s;width:var(--vs-item-size, 44px);height:var(--vs-item-size, 44px);box-shadow:0 2px 8px #00000026;animation:scaleIn .15s ease forwards}.vs-item--red-circle{background:var(--error);border-radius:50%}.vs-item--blue-circle{background:var(--primary);border-radius:50%}.vs-item--red-square{background:var(--error);border-radius:0}@media(max-width:480px){.flanker-arrow{font-size:2rem}.flanker-arrow--target{transform:scale(1.2)}}@media(max-width:360px){.flanker-arrow{font-size:1.5rem}}@media(max-width:360px){.vs-item{width:var(--vs-item-size, 36px);height:var(--vs-item-size, 36px)}}