.error-message{display:flex;gap:1rem;border-radius:8px;animation:error-slide-in .3s ease}.error-message--inline{padding:1rem;background:#ef44441a;border:1px solid var(--color-danger)}.error-message--card{padding:1.5rem;background:var(--color-bg-primary);border:2px solid var(--color-danger);box-shadow:var(--shadow-lg)}.error-message__icon{font-size:1.5rem;flex-shrink:0}.error-message__content{flex:1;display:flex;flex-direction:column;gap:.5rem}.error-message__title{margin:0;font-size:1rem;font-weight:600;color:var(--color-danger)}.error-message__text{margin:0;font-size:.875rem;color:var(--color-text-secondary);line-height:1.5}.error-message__retry{align-self:flex-start;margin-top:.5rem;padding:.5rem 1rem;font-size:.875rem;font-weight:500;color:#fff;background:var(--color-danger);border:none;border-radius:6px;cursor:pointer;transition:background .2s ease}.error-message__retry:hover{background:var(--color-danger-dark)}.error-message__retry:focus-visible{outline:2px solid var(--color-danger);outline-offset:2px}@keyframes error-slide-in{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.error-boundary{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem;background:var(--color-bg-primary)}.error-boundary__content{max-width:600px;width:100%}.error-boundary__title{margin:0 0 2rem;text-align:center;font-size:2rem;color:var(--color-text)}.error-boundary__details{margin-top:2rem;padding:1rem;background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:8px}.error-boundary__details summary{cursor:pointer;font-weight:600;color:var(--color-text);-webkit-user-select:none;user-select:none}.error-boundary__details pre{margin-top:1rem;padding:1rem;background:var(--color-bg-tertiary);border-radius:4px;overflow-x:auto;font-size:.75rem;line-height:1.5;color:var(--color-text-secondary)}.loading-spinner-container{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;padding:2rem}.loading-spinner-container--fullscreen{position:fixed;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;background:var(--color-bg-primary);z-index:9999}.loading-spinner{display:flex;gap:.5rem}.loading-spinner__circle{width:12px;height:12px;background:var(--color-primary);border-radius:50%;animation:loading-bounce 1.4s infinite ease-in-out both}.loading-spinner__circle:nth-child(1){animation-delay:-.32s}.loading-spinner__circle:nth-child(2){animation-delay:-.16s}.loading-spinner--small .loading-spinner__circle{width:8px;height:8px}.loading-spinner--large .loading-spinner__circle{width:16px;height:16px}.loading-spinner__text{margin:0;font-size:1rem;color:var(--color-text-secondary)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}@keyframes loading-bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.navbar{background-color:var(--color-surface);border-bottom:1px solid var(--color-border);box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:100}.navbar-container{max-width:1400px;margin:0 auto;padding:0 var(--spacing-lg);display:flex;align-items:center;justify-content:space-between;height:70px;gap:var(--spacing-xl)}.navbar-brand h1{font-size:var(--font-size-xl);color:var(--color-primary);margin:0;font-weight:600}.navbar-brand{display:flex;align-items:center}.navbar-brand a{display:flex;align-items:center;text-decoration:none}.navbar-logo{height:50px;width:auto;object-fit:contain;transition:opacity var(--transition-fast)}.navbar-logo:hover{opacity:.8}.hamburger-menu{display:none;flex-direction:column;justify-content:space-between;width:30px;height:24px;background:transparent;border:none;cursor:pointer;padding:0;z-index:101}.hamburger-line{width:100%;height:3px;background-color:var(--color-text);border-radius:2px;transition:all .3s ease;transform-origin:center}.hamburger-line.open:nth-child(1){transform:translateY(10.5px) rotate(45deg)}.hamburger-line.open:nth-child(2){opacity:0}.hamburger-line.open:nth-child(3){transform:translateY(-10.5px) rotate(-45deg)}.navbar-menu{display:flex;align-items:center;gap:var(--spacing-xl);flex:1}.navbar-links{display:flex;gap:var(--spacing-sm);flex:1;justify-content:center;list-style:none;margin:0;padding:0}.navbar-links li{display:inline-block}.nav-link{padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--radius-md);font-weight:500;font-size:var(--font-size-base);color:var(--color-text-secondary);transition:all var(--transition-fast);text-decoration:none;display:inline-block}.nav-link:hover{background-color:var(--color-surface-hover);color:var(--color-text)}.nav-link.active{background-color:var(--color-primary);color:#fff}.nav-link:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.dropdown{position:relative}.dropdown:hover .dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}.dropdown-toggle{background:transparent;border:none;cursor:pointer;display:inline-flex;align-items:center;gap:var(--spacing-xs)}.dropdown-arrow{font-size:.7em;transition:transform var(--transition-fast)}.dropdown-toggle[aria-expanded=true] .dropdown-arrow{transform:rotate(180deg)}.dropdown-menu{position:absolute;top:100%;left:0;background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-md);list-style:none;margin:var(--spacing-xs) 0 0 0;padding:var(--spacing-xs);min-width:180px;opacity:0;visibility:hidden;transform:translateY(-10px);transition:all var(--transition-fast);z-index:1000}.dropdown-menu.open{opacity:1;visibility:visible;transform:translateY(0)}.dropdown-item{display:block;min-width:180px;padding:var(--spacing-sm) var(--spacing-md);color:var(--color-text-secondary);text-decoration:none;border-radius:var(--radius-sm);transition:all var(--transition-fast);white-space:nowrap}.dropdown-item:hover{background-color:var(--color-surface-hover);color:var(--color-text)}.dropdown-item.active{background-color:var(--color-primary);color:#fff}.user-dropdown{position:relative}.user-profile-button{display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-md);background-color:transparent;border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.user-profile-button:hover{background-color:var(--color-surface-hover);border-color:var(--color-primary)}.user-profile-button:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.user-profile-button .user-email{display:none}.user-profile-button .dropdown-arrow{font-size:.7em;transition:transform var(--transition-fast)}.user-profile-button[aria-expanded=true] .dropdown-arrow{transform:rotate(180deg)}.user-dropdown-menu{right:0;left:auto}.dropdown-divider{height:1px;background-color:var(--color-border);margin:var(--spacing-xs) 0;list-style:none}.logout-item{width:100%;background:transparent;border:none;cursor:pointer;font-size:var(--font-size-sm);font-family:inherit;text-align:left}.logout-item:hover{background-color:var(--color-error-bg);color:var(--color-error)}.navbar-user{display:flex;align-items:center;gap:var(--spacing-md)}.user-profile-link{text-decoration:none;transition:opacity var(--transition-fast)}.user-profile-link:hover .user-email{opacity:.7}.user-profile-link:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;border-radius:var(--radius-sm)}.user-email{font-size:var(--font-size-sm);color:var(--color-text-secondary);display:none;cursor:pointer}.btn-logout{padding:var(--spacing-sm) var(--spacing-lg);background-color:transparent;border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.btn-logout:hover{background-color:var(--color-error);color:#fff;border-color:var(--color-error)}.btn-login:hover{background-color:var(--color-success);color:#fff;border-color:var(--color-success)}@media(min-width:1034px){.user-email{display:block}.user-profile-button .user-email{display:inline}}@media(max-width:1033px){.hamburger-menu{display:flex}.navbar-container{padding:var(--spacing-md);height:60px}.navbar-menu{position:fixed;top:60px;left:0;right:0;background-color:var(--color-surface);border-bottom:1px solid var(--color-border);box-shadow:var(--shadow-md);flex-direction:column;align-items:stretch;gap:0;padding:var(--spacing-md);transform:translateY(-100%);opacity:0;visibility:hidden;transition:all .3s ease;max-height:calc(100vh - 60px);overflow-y:auto}.navbar-menu.open{transform:translateY(0);opacity:1;visibility:visible}.navbar-links{flex-direction:column;width:100%;gap:var(--spacing-xs)}.navbar-links li{width:100%}.dropdown{position:static}.dropdown-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;margin:0;padding:0 0 0 var(--spacing-lg);background:transparent;max-height:0;overflow:hidden;transition:max-height .3s ease}.dropdown-menu.open{max-height:300px}.dropdown-item{padding:var(--spacing-sm) var(--spacing-md)}.dropdown-toggle{width:100%;justify-content:space-between;text-align:left}.nav-link{display:block;width:100%;padding:var(--spacing-md);font-size:var(--font-size-base);text-align:left}.navbar-user{width:100%;flex-direction:column;gap:var(--spacing-sm);margin-top:var(--spacing-md);padding-top:var(--spacing-md);border-top:1px solid var(--color-border)}.user-dropdown{width:100%;position:static}.user-profile-button{width:100%;justify-content:space-between;padding:var(--spacing-md)}.user-profile-button .user-email{display:inline}.user-dropdown-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;margin:0;padding:0 0 0 var(--spacing-lg);background:transparent;max-height:0;overflow:hidden;transition:max-height .3s ease;right:auto}.user-dropdown-menu.open{max-height:400px}.user-profile-link{width:100%}.user-email{display:block;padding:var(--spacing-md);background-color:var(--color-background);border-radius:var(--radius-md);width:100%;text-align:center}.btn-logout{width:100%;padding:var(--spacing-md)}}.skip-link{position:absolute;top:-40px;left:0;background:var(--color-primary);color:#fff;padding:.75rem 1rem;text-decoration:none;font-weight:600;z-index:100;border-radius:0 0 var(--radius-md) 0;transition:top var(--transition-fast)}.skip-link:focus{top:0;outline:2px solid white;outline-offset:2px}.layout{min-height:100vh;display:flex;flex-direction:column}.main-content{flex:1;background-color:var(--color-background)}.page-container{max-width:1200px;margin:0 auto;padding:var(--spacing-2xl) var(--spacing-lg);animation:fadeIn .3s ease-in-out}.page-header{margin-bottom:var(--spacing-2xl);animation:slideUp .4s ease-out}.page-header h1{margin-bottom:var(--spacing-sm);color:var(--color-text)}.page-header p{color:var(--color-text-secondary);font-size:var(--font-size-lg)}.page-content{display:flex;flex-direction:column;gap:var(--spacing-xl);animation:slideUp .4s ease-out .1s backwards}.placeholder-card{background:var(--color-surface);padding:var(--spacing-2xl);border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.placeholder-card h2{margin-bottom:var(--spacing-lg);color:var(--color-text)}.placeholder-card p{color:var(--color-text-secondary);margin-bottom:var(--spacing-md);line-height:1.6}.placeholder-card ul{list-style:none;padding:0;margin:var(--spacing-lg) 0}.placeholder-card ul li{padding:var(--spacing-sm) 0;color:var(--color-text-secondary);display:flex;align-items:flex-start;gap:var(--spacing-sm)}.placeholder-card ul li:before{content:"✓";color:var(--color-primary);font-weight:700;flex-shrink:0;margin-top:2px}@media(max-width:768px){.page-container{padding:var(--spacing-lg) var(--spacing-md)}.page-header{margin-bottom:var(--spacing-xl)}.page-header h1{font-size:var(--font-size-2xl)}.page-header p{font-size:var(--font-size-base)}.placeholder-card{padding:var(--spacing-xl)}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-family:inherit;font-weight:500;border:none;border-radius:8px;cursor:pointer;transition:all .2s ease;position:relative;white-space:nowrap}.btn:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.btn:disabled{cursor:not-allowed;opacity:.6}.btn--small{padding:.5rem 1rem;font-size:.875rem;line-height:1.25rem}.btn--medium{padding:.75rem 1.5rem;font-size:1rem;line-height:1.5rem}.btn--large{padding:1rem 2rem;font-size:1.125rem;line-height:1.75rem}.btn--primary{background:var(--color-primary);color:#fff}.btn--primary:hover:not(:disabled){background:var(--color-primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px #6366f14d}.btn--secondary{background:var(--color-bg-secondary);color:var(--color-text);border:1px solid var(--color-border)}.btn--secondary:hover:not(:disabled){background:var(--color-bg-tertiary);transform:translateY(-1px);box-shadow:0 2px 8px #0000001a}.btn--danger{background:var(--color-danger);color:#fff}.btn--danger:hover:not(:disabled){background:var(--color-danger-dark);transform:translateY(-1px);box-shadow:0 4px 12px #ef44444d}.btn--ghost{background:transparent;color:var(--color-text-secondary)}.btn--ghost:hover:not(:disabled){background:var(--color-bg-secondary);color:var(--color-text)}.btn--full-width{width:100%}.btn--loading{pointer-events:none}.btn__spinner{display:inline-block;width:1em;height:1em;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:btn-spin .6s linear infinite;position:absolute;left:50%;transform:translate(-50%)}.btn__text--hidden{opacity:0}@keyframes btn-spin{to{transform:translate(-50%) rotate(360deg)}}.input-wrapper{display:flex;flex-direction:column;gap:.5rem;width:100%}.input-label{font-size:.875rem;font-weight:500;color:var(--color-text)}.input{width:100%;padding:.75rem 1rem;font-size:1rem;font-family:inherit;color:var(--color-text);background:var(--color-bg-primary);border:1px solid var(--color-border);border-radius:8px;transition:all .2s ease}.input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #6366f11a}.input:disabled{background:var(--color-bg-secondary);cursor:not-allowed;opacity:.6}.input--error{border-color:var(--color-danger)}.input--error:focus{box-shadow:0 0 0 3px #ef44441a}.input--textarea{min-height:100px;resize:vertical;line-height:1.5}.input-error{font-size:.875rem;color:var(--color-danger);display:flex;align-items:center;gap:.25rem}.input-helper{font-size:.875rem;color:var(--color-text-secondary)}.input[type=number]::-webkit-inner-spin-button,.input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.input[type=number]{appearance:textfield;-moz-appearance:textfield}.card{background:var(--color-bg-primary);border-radius:12px;transition:all .2s ease}.card--default{border:1px solid var(--color-border)}.card--outlined{border:2px solid var(--color-border)}.card--elevated{border:none;box-shadow:var(--shadow-md)}.card--clickable{cursor:pointer}.card--clickable:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.card--clickable:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.card--padding-none{padding:0}.card--padding-small{padding:1rem}.card--padding-medium{padding:1.5rem}.card--padding-large{padding:2rem}.card__title{margin:0 0 1rem;font-size:1.25rem;font-weight:600;color:var(--color-text)}.card__content{color:var(--color-text)}.card--padding-none .card__title{padding:1.5rem 1.5rem 0}.card--padding-none .card__content{padding:0 1.5rem 1.5rem}.modal-backdrop{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:var(--z-modal-backdrop);animation:fadeIn .2s ease-out;padding:var(--spacing-lg)}.modal{background:var(--color-bg-primary);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);max-height:90vh;display:flex;flex-direction:column;animation:scaleIn .2s ease-out;position:relative}.modal:focus{outline:none}.modal--small{width:100%;max-width:400px}.modal--medium{width:100%;max-width:600px}.modal--large{width:100%;max-width:800px}.modal__header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-xl);border-bottom:1px solid var(--color-border)}.modal__title{margin:0;font-size:var(--font-size-2xl);font-weight:600;color:var(--color-text)}.modal__close{background:transparent;border:none;font-size:1.5rem;color:var(--color-text-secondary);cursor:pointer;padding:var(--spacing-sm);border-radius:var(--radius-md);transition:all var(--transition-fast);display:flex;align-items:center;justify-content:center;width:2rem;height:2rem}.modal__close:hover{background:var(--color-bg-secondary);color:var(--color-text)}.modal__close:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.modal__body{padding:var(--spacing-xl);overflow-y:auto;flex:1}.modal__footer{padding:var(--spacing-xl);border-top:1px solid var(--color-border);display:flex;justify-content:flex-end;gap:var(--spacing-md)}.confirm-dialog__message{margin:0;color:var(--color-text);font-size:var(--font-size-base);line-height:var(--line-height-relaxed)}.confirm-dialog__actions{display:flex;gap:var(--spacing-md);width:100%;justify-content:flex-end}@media(max-width:768px){.modal-backdrop{padding:var(--spacing-md)}.modal{max-height:95vh}.modal__header,.modal__body,.modal__footer{padding:var(--spacing-lg)}.confirm-dialog__actions{flex-direction:column-reverse}.confirm-dialog__actions button{width:100%}}.edit-entry-form{display:flex;flex-direction:column;gap:var(--spacing-xl)}.category-grid-modal{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-md)}.category-option-modal{position:relative;cursor:pointer;background:var(--color-bg-secondary);border:2px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-md);transition:all var(--transition-fast);display:flex;align-items:center;justify-content:center}.category-option-modal:hover{background:var(--color-bg-tertiary);border-color:var(--color-border-dark)}.category-option-modal input[type=radio]{position:absolute;opacity:0;cursor:pointer}.category-option-modal.selected{border-color:var(--color-primary);background:var(--color-bg-primary)}.category-label-modal{display:flex;align-items:center;gap:var(--spacing-sm);font-weight:500;color:var(--color-text)}.category-icon-modal{width:24px;height:24px;border-radius:50%;flex-shrink:0}.category-icon-modal.category-reading{background:var(--color-reading)}.category-icon-modal.category-writing{background:var(--color-writing)}.category-icon-modal.category-speaking{background:var(--color-speaking)}.category-icon-modal.category-listening{background:var(--color-listening)}.category-icon-modal.category-watching{background:var(--color-watching)}.edit-entry-actions{display:flex;justify-content:flex-end;gap:var(--spacing-md);padding-top:var(--spacing-md)}@media(max-width:480px){.category-grid-modal{grid-template-columns:1fr}.edit-entry-actions{flex-direction:column-reverse}.edit-entry-actions button{width:100%}}.progress-chart-container{background:var(--color-surface);border-radius:var(--radius-lg);padding:var(--spacing-md);box-shadow:var(--shadow-md);margin-top:var(--spacing-md)}.progress-chart-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:var(--spacing-md);gap:var(--spacing-sm)}.progress-chart-title{font-size:var(--font-size-base);font-weight:600;color:var(--color-text);margin:0}.progress-chart-controls{display:flex;gap:var(--spacing-md);flex-wrap:wrap}.chart-control-group{display:flex;flex-direction:column;gap:var(--spacing-xs)}.chart-control-label{font-size:var(--font-size-sm);font-weight:500;color:var(--color-text-secondary)}.chart-select{padding:var(--spacing-xs) var(--spacing-sm);border:2px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-background);color:var(--color-text);font-size:var(--font-size-xs);font-weight:500;cursor:pointer;transition:all var(--transition-fast);min-width:120px}.chart-select:hover{border-color:var(--color-primary);background:var(--color-surface-hover)}.chart-select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #3b82f61a}.progress-chart{width:100%;overflow-x:auto}.progress-chart svg{display:block;max-width:100%;height:auto}.progress-chart-empty{display:flex;justify-content:center;align-items:center;min-height:200px;color:var(--color-text-secondary);font-size:var(--font-size-sm);background:var(--color-background);border-radius:var(--radius-md)}.grid-line{stroke:var(--color-border);stroke-width:1;stroke-dasharray:4;opacity:.5}.axis-line{stroke:var(--color-text-secondary);stroke-width:2}.axis-label{fill:var(--color-text-secondary);font-size:12px;font-family:var(--font-family)}.axis-title{fill:var(--color-text);font-size:14px;font-weight:600;font-family:var(--font-family)}.chart-line{stroke:var(--color-primary);stroke-width:3;stroke-linecap:round;stroke-linejoin:round}.data-point{fill:var(--color-background);stroke:var(--color-primary);stroke-width:2;cursor:pointer;transition:all .2s 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h1{color:var(--color-primary);margin-bottom:var(--spacing-md)}.game-over-message{color:var(--color-text-secondary);font-size:var(--font-size-lg);margin-bottom:var(--spacing-2xl)}.game-over-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-xl);margin-bottom:var(--spacing-2xl);padding:var(--spacing-xl);background:var(--color-background);border-radius:var(--radius-md)}.game-over-stat{display:flex;flex-direction:column;gap:var(--spacing-sm)}.game-over-stat .stat-label{font-size:var(--font-size-sm);color:var(--color-text-secondary);font-weight:500;text-transform:uppercase}.game-over-stat .stat-value{font-size:var(--font-size-3xl);color:var(--color-primary);font-weight:700}.game-over-controls{display:flex;justify-content:center;gap:var(--spacing-md);flex-wrap:wrap}.game-over-controls button{min-width:180px}.image-game-content{max-width:1000px;margin:0 auto;display:flex;flex-direction:column;gap:var(--spacing-md);height:calc(100vh - 280px)}.score-display{display:flex;justify-content:center;gap:var(--spacing-lg);padding:var(--spacing-md);background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);flex-shrink:0}.score-stat{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-xs)}.score-label{font-size:var(--font-size-sm);color:var(--color-text-secondary);font-weight:500}.score-value{font-size:var(--font-size-xl);color:var(--color-primary);font-weight:700}.image-display-section{position:relative;display:flex;justify-content:center;align-items:center;min-height:25vh;max-height:35vh;padding:var(--spacing-md);background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);flex-shrink:0}.image-container{max-width:500px;max-height:100%;width:100%;aspect-ratio:4/3;display:flex;justify-content:center;align-items:center;overflow:hidden;border-radius:var(--radius-md);background:var(--color-background)}.game-image{width:100%;height:100%;object-fit:contain;border-radius:var(--radius-md)}.no-image{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-md);color:var(--color-text-secondary)}.no-image span{font-size:4rem}.no-image p{font-size:var(--font-size-base)}.feedback-message{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;padding:var(--spacing-lg) var(--spacing-2xl);border-radius:var(--radius-md);font-size:var(--font-size-lg);font-weight:600;animation:fadeIn .3s;z-index:10;box-shadow:var(--shadow-lg);min-width:200px;max-width:90%}.feedback-message.correct{background:#dcfce7;color:#166534;border:2px solid #22c55e}.feedback-message.incorrect{background:#fee2e2;color:#991b1b;border:2px solid var(--color-error)}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.choices-section{padding:var(--spacing-md);background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);flex-shrink:0}.choices-title{text-align:center;color:var(--color-text);margin-bottom:var(--spacing-md);font-size:var(--font-size-base)}.choices-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:var(--spacing-sm)}.choice-button{padding:var(--spacing-md);background:var(--color-background);border:2px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:500;color:var(--color-text);cursor:pointer;transition:all var(--transition-fast);min-height:50px;display:flex;align-items:center;justify-content:center;text-align:center}.choice-button:hover:not(:disabled){background:var(--color-surface-hover);transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--color-primary)}.choice-button:active:not(:disabled){transform:translateY(0)}.choice-button.correct{background:#dcfce7;border-color:#22c55e;color:#166534}.choice-button.incorrect{background:#fee2e2;border-color:var(--color-error);color:#991b1b;animation:shake .4s}.choice-button:disabled{cursor:not-allowed;opacity:.7}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-10px)}75%{transform:translate(10px)}}.game-controls{display:flex;justify-content:center;gap:var(--spacing-md);margin-top:var(--spacing-sm);flex-shrink:0}@media(max-width:1024px){.choices-grid{grid-template-columns:repeat(3,1fr)}}@media(max-width:768px){.category-options{grid-template-columns:1fr}.game-over-stats{grid-template-columns:1fr;gap:var(--spacing-lg)}.choices-grid{grid-template-columns:repeat(2,1fr);gap:var(--spacing-sm)}.choice-button{padding:var(--spacing-md);min-height:50px;font-size:var(--font-size-sm)}.image-display-section{min-height:30vh}.score-display{flex-wrap:wrap;gap:var(--spacing-md)}.score-stat{min-width:100px}}@media(max-width:480px){.choices-grid{grid-template-columns:1fr}.choice-button{padding:var(--spacing-sm);font-size:var(--font-size-sm)}.image-container{aspect-ratio:1/1}}.admin-stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-bottom:2rem}.admin-stat-card{background:var(--card-bg);border-radius:12px;padding:1.5rem;text-align:center;box-shadow:0 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var(--border-color);color:var(--text-primary)}.admin-table tbody tr:hover{background:var(--hover-bg)}.admin-table tbody tr:last-child td{border-bottom:none}.user-info{display:flex;flex-direction:column;gap:.25rem}.user-nickname{font-weight:500;color:var(--text-primary)}.user-uid{font-size:.75rem;color:var(--text-secondary);font-family:monospace}.stat-badge{display:inline-block;padding:.25rem .75rem;background:var(--primary-color);color:#fff;border-radius:12px;font-size:.875rem;font-weight:600}.admin-badge{display:inline-block;padding:.25rem .75rem;background:linear-gradient(135deg,#ff6b6b,#ee5a6f);color:#fff;border-radius:12px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.admin-actions{display:flex;gap:.5rem;flex-wrap:wrap}.btn-delete-entries,.btn-delete-sessions{padding:.5rem .75rem;color:#fff;border:none;border-radius:6px;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s ease;white-space:nowrap}.btn-delete-entries{background:#ff6b6b}.btn-delete-entries:hover{background:#ee5a6f;transform:translateY(-1px);box-shadow:0 2px 8px #ff6b6b4d}.btn-delete-sessions{background:#ff6b6b}.btn-delete-sessions:hover{background:#ee5a6f;transform:translateY(-1px);box-shadow:0 2px 8px #ff6b6b4d}.btn-delete-entries:active,.btn-delete-sessions:active{transform:translateY(0)}.admin-instructions{background:linear-gradient(135deg,#f8f9fa,#e9ecef)}.instruction-card{background:#fff;border-radius:8px;padding:1.5rem;margin-bottom:1rem;box-shadow:0 1px 4px #0000001a}.instruction-card:last-child{margin-bottom:0}.instruction-card h3{margin:0 0 1rem;color:var(--text-primary);font-size:1.125rem}.instruction-card ol,.instruction-card ul{margin:0;padding-left:1.5rem}.instruction-card li{margin-bottom:.5rem;color:var(--text-primary);line-height:1.6}.instruction-card li:last-child{margin-bottom:0}.instruction-card code{background:#f1f3f5;padding:.125rem .375rem;border-radius:4px;font-family:monospace;font-size:.875rem;color:#e03131}.instruction-card a{color:var(--primary-color);text-decoration:none;font-weight:500}.instruction-card a:hover{text-decoration:underline}.section-description{color:var(--text-secondary);margin-bottom:1.5rem;font-size:.875rem}.youtube-fetcher{max-width:800px}.input-group{display:flex;gap:.75rem;margin-bottom:1rem}.channel-input{flex:1;padding:.75rem 1rem;border:2px solid var(--border-color);border-radius:8px;font-size:.875rem;font-family:monospace;transition:border-color .2s ease}.channel-input:focus{outline:none;border-color:var(--primary-color)}.btn-fetch{padding:.75rem 1.5rem;background:var(--color-primary);color:#fff;border:none;border-radius:8px;font-weight:600;cursor:pointer;transition:all .2s ease;white-space:nowrap}.btn-fetch:hover:not(:disabled){background:var(--color-primary-dark);transform:translateY(-1px)}.btn-fetch:disabled{opacity:.5;cursor:not-allowed}.channel-error{padding:.75rem 1rem;background:#fee;color:#c33;border-radius:8px;font-size:.875rem;margin-bottom:1rem}.channel-result{padding:1.5rem;background:var(--hover-bg);border-radius:12px;border:2px solid var(--border-color)}.result-header{font-size:1rem;margin-bottom:1rem;color:var(--text-primary)}.result-avatar{margin-bottom:1rem;text-align:center}.avatar-preview{max-width:200px;border-radius:50%;box-shadow:0 4px 12px #00000026;border:3px solid var(--border-color)}.result-url{display:flex;gap:.5rem;align-items:center;flex-wrap:wrap}.result-url label{font-weight:600;color:var(--text-secondary);font-size:.875rem;min-width:100px}.url-input{flex:1;padding:.5rem .75rem;border:1px solid var(--border-color);border-radius:6px;font-size:.8rem;font-family:monospace;background:var(--card-bg);min-width:200px}.url-input:focus{outline:none;border-color:var(--primary-color)}.btn-copy{padding:.5rem 1rem;background:var(--secondary-color, #6c757d);color:#fff;border:none;border-radius:6px;font-size:.875rem;cursor:pointer;transition:all .2s ease;white-space:nowrap}.btn-copy:hover{background:var(--secondary-hover, #5a6268)}.btn-clear{padding:.5rem .75rem;background:#dc3545;color:#fff;border:none;border-radius:6px;font-size:1rem;cursor:pointer;transition:all .2s ease;white-space:nowrap;min-width:40px}.btn-clear:hover{background:#c82333}@media(max-width:768px){.admin-stats-grid{grid-template-columns:repeat(2,1fr);gap:1rem}.admin-section{padding:1.5rem}.admin-table th,.admin-table td{padding:.75rem .5rem;font-size:.875rem}.admin-stat-icon{font-size:2rem}.admin-stat-value{font-size:1.5rem}.input-group{flex-direction:column}.result-url{flex-direction:column;align-items:stretch}.result-url label{min-width:auto}}@media(max-width:480px){.admin-stats-grid{grid-template-columns:1fr}.admin-section{padding:1rem}.admin-table{font-size:.75rem}.admin-table th,.admin-table td{padding:.5rem .25rem}.user-uid{display:none}}.filter-section-reading{display:flex;align-items:center;gap:var(--spacing-md);margin-bottom:var(--spacing-2xl);padding:var(--spacing-lg);background:var(--color-surface);border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}.level-filter-select{padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--font-size-base);color:var(--color-text);background-color:var(--color-bg-primary);cursor:pointer;transition:border-color var(--transition-fast);min-width:120px}.book-count{margin-left:auto;color:var(--color-text-secondary);font-size:var(--font-size-sm)}.books-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-lg)}.book-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);transition:all var(--transition-fast);display:flex;flex-direction:column;gap:var(--spacing-sm)}.book-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--color-primary-light)}.book-header{display:flex;justify-content:space-between;align-items:flex-start;gap:var(--spacing-sm);margin-bottom:var(--spacing-xs)}.book-title{font-size:var(--font-size-base);font-weight:600;color:var(--color-text);margin:0;line-height:1.3;flex:1}.book-level{display:inline-block;padding:var(--spacing-xs) var(--spacing-sm);background-color:var(--color-primary);color:#fff;border-radius:var(--radius-sm);font-size:var(--font-size-xs);font-weight:600;white-space:nowrap;flex-shrink:0}.book-author{color:var(--color-text-secondary);font-size:var(--font-size-sm);margin:0;font-style:italic}.book-footer{display:flex;justify-content:space-between;align-items:center;margin-top:var(--spacing-sm);padding-top:var(--spacing-sm);border-top:1px solid var(--color-border)}.book-word-count{color:var(--color-text-secondary);font-size:var(--font-size-xs)}.amazon-button{display:inline-flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-sm);background-color:#fff;color:#000;border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:var(--font-size-xs);font-weight:600;text-decoration:none;cursor:pointer;transition:all var(--transition-fast)}.amazon-button:hover{background-color:#f5f5f5;transform:scale(1.05)}.amazon-button svg{flex-shrink:0}@media(max-width:768px){.books-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:var(--spacing-md)}.filter-section-reading{flex-direction:column;align-items:stretch}.book-count{margin-left:0;text-align:center}}@media(max-width:480px){.books-grid{grid-template-columns:1fr}}.filter-section-watching{display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-md);padding:var(--spacing-lg);background:var(--color-surface);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);flex-wrap:wrap}.filter-controls{display:flex;align-items:center;gap:var(--spacing-md);flex-wrap:wrap}.filter-label{font-weight:600;color:var(--color-text);font-size:var(--font-size-base)}.level-filter-select{padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--font-size-base);color:var(--color-text);background-color:var(--color-bg-primary);cursor:pointer;transition:border-color var(--transition-fast);min-width:150px}.level-filter-select:hover{border-color:var(--color-primary)}.level-filter-select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #6366f11a}.channel-count{color:var(--color-text-secondary);font-size:var(--font-size-sm);white-space:nowrap}.page-info{color:var(--color-text-secondary)}.pagination{display:flex;justify-content:center;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-lg)}.pagination-btn{min-width:40px;height:40px;padding:var(--spacing-xs) var(--spacing-sm);border:1px solid var(--color-border);background-color:var(--color-surface);color:var(--color-text);border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.pagination-btn:hover:not(:disabled){background-color:var(--color-primary-light);border-color:var(--color-primary);color:var(--color-primary)}.pagination-btn.active{background-color:var(--color-primary);border-color:var(--color-primary);color:#fff}.pagination-btn:disabled{opacity:.5;cursor:not-allowed}.pagination-ellipsis{padding:var(--spacing-xs) var(--spacing-sm);color:var(--color-text-secondary)}.channels-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-lg)}.channel-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);transition:all var(--transition-fast);display:flex;flex-direction:column;gap:var(--spacing-md)}.channel-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--color-watching)}.channel-header{display:flex;align-items:center;gap:var(--spacing-md)}.channel-avatar{width:48px;height:48px;border-radius:50%;object-fit:cover;flex-shrink:0;background-color:var(--color-border)}.channel-info{display:flex;flex-direction:column;gap:var(--spacing-xs);flex:1;min-width:0}.channel-title{font-size:var(--font-size-lg);font-weight:600;color:var(--color-text);margin:0;line-height:1.3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.channel-level{display:inline-block;align-self:flex-start;padding:var(--spacing-xs) var(--spacing-sm);background-color:var(--color-watching);color:#fff;border-radius:var(--radius-sm);font-size:var(--font-size-xs);font-weight:600;white-space:nowrap}.channel-footer{display:flex;justify-content:flex-end;margin-top:auto}.youtube-button{display:inline-flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-sm);background-color:red;color:#fff;border:none;border-radius:var(--radius-sm);font-size:var(--font-size-xs);font-weight:600;text-decoration:none;cursor:pointer;transition:all var(--transition-fast)}.youtube-button:hover{background-color:#c00;transform:scale(1.05)}.youtube-button svg{flex-shrink:0}@media(max-width:768px){.channels-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:var(--spacing-md)}.filter-section-watching{flex-direction:column;align-items:flex-start}.filter-controls{width:100%;flex-direction:column;align-items:flex-start}.channel-count{width:100%}.pagination{flex-wrap:wrap;gap:var(--spacing-xs)}.pagination-btn{min-width:36px;height:36px;font-size:var(--font-size-xs)}}.game-selector{display:flex;gap:.5rem;margin-bottom:2rem;padding:.5rem;background:var(--color-surface);border-radius:12px;box-shadow:0 2px 8px #0000001a}.game-tab{flex:1;padding:.875rem 1.5rem;background:transparent;border:none;border-radius:8px;font-size:1rem;font-weight:500;color:var(--color-text-secondary);cursor:pointer;transition:all .2s ease}.game-tab:hover{background:var(--color-surface-hover);color:var(--color-text)}.game-tab.active{background:var(--color-primary);color:#fff;box-shadow:0 2px 8px #4caf504d}.leaderboard-container{background:var(--color-surface);border-radius:12px;box-shadow:0 2px 8px #0000001a;overflow:hidden}.leaderboard-header{padding:1.5rem;background:linear-gradient(135deg,var(--color-primary),#66bb6a);color:#fff}.leaderboard-header-content{display:flex;align-items:center;justify-content:space-between;gap:1.5rem}.leaderboard-header h2{margin:0 0 .5rem;font-size:1.5rem;font-weight:600}.play-now-button{display:inline-block;padding:.75rem 1.5rem;background:#fff;color:var(--color-primary);border:none;border-radius:8px;font-size:1rem;font-weight:600;text-decoration:none;cursor:pointer;transition:all .2s ease;box-shadow:0 2px 8px #00000026;white-space:nowrap;align-self:center}.play-now-button:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0003;background:#fffffff2}.leaderboard-title{color:#fff}.category-filter{display:flex;align-items:center;gap:.75rem;margin-top:.75rem}.category-filter label{color:#fff;font-size:.875rem;font-weight:500}.category-select{padding:.5rem 1rem;border:2px solid rgba(255,255,255,.3);border-radius:8px;background:#ffffff26;color:#fff;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s ease;min-width:150px}.category-select:hover{background:#ffffff40;border-color:#ffffff80}.category-select:focus{outline:none;background:#ffffff4d;border-color:#fff}.category-select option{background:var(--color-surface);color:var(--color-text)}.leaderboard-subtitle{margin:0;color:#fff;font-size:.875rem;opacity:.9}.leaderboard-table{padding:1rem}.leaderboard-table-header{display:grid;grid-template-columns:80px 1fr 100px 100px 100px 120px;gap:1rem;padding:1rem;font-weight:600;font-size:.875rem;color:var(--color-text-secondary);text-transform:uppercase;border-bottom:2px solid var(--color-border)}.leaderboard-row{display:grid;grid-template-columns:80px 1fr 100px 100px 100px 120px;gap:1rem;padding:1rem;align-items:center;border-bottom:1px solid 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