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var(--transition-base);appearance:none;-webkit-appearance:none;-moz-appearance:none;box-shadow:var(--shadow);text-align:center;text-align-last:center}.language-select *{color:#fff!important;background-color:transparent!important}.language-select:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);background:linear-gradient(135deg,var(--primary-hover) 0%,var(--primary-color) 100%)}.language-select:focus{outline:none;box-shadow:0 0 0 3px #6366f14d;border-color:#ffffff4d}.language-select option{background-color:#fff;color:var(--text-primary);padding:var(--space-md);font-weight:500;text-align:center}.language-select::-webkit-select-placeholder{color:#fff}.language-select::-moz-placeholder{color:#fff}.language-select:-ms-input-placeholder{color:#fff}.btn{padding:var(--space-sm) var(--space-xl);border:none;border-radius:var(--radius-lg);font-size:.9375rem;font-weight:600;cursor:pointer;transition:all 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rgba(255,255,255,.2)}.flash-card .card-front{background:linear-gradient(135deg,#667eea,#764ba2);color:var(--text-inverse);transform:rotateY(0);z-index:2}.flash-card .card-back{background:linear-gradient(135deg,#f093fb,#f5576c);color:var(--text-inverse);transform:rotateY(180deg);z-index:1}.flash-card.flipped .card-front{transform:rotateY(-180deg);z-index:1}.flash-card.flipped .card-back{transform:rotateY(0);z-index:2}.card-content{padding:var(--space-3xl);width:100%;height:100%;overflow-y:auto;overflow-x:hidden;display:flex;flex-direction:column;box-sizing:border-box;position:relative;z-index:1}.card-label{font-size:.875rem;text-transform:uppercase;letter-spacing:.15em;opacity:.9;margin-bottom:var(--space-xl);flex-shrink:0;font-weight:600;position:relative;z-index:10;background:transparent}.card-text{font-size:1.375rem;line-height:1.8;word-wrap:break-word;overflow-wrap:break-word;max-width:100%;hyphens:auto;overflow-y:visible;overflow-x:hidden;flex:1;min-height:0}.card-controls{display:flex;justify-content:space-between;align-items:center;gap:var(--space-xl);padding:var(--space-lg);background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);margin-top:var(--space-lg)}.card-navigation{display:flex;align-items:center;gap:var(--space-lg);font-weight:600;color:var(--text-primary);font-size:1rem}.cards-list-section{margin-top:var(--space-3xl)}.cards-list-section 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textarea,.form-group input,.form-select{width:100%;padding:var(--space-md);border:2px solid var(--border-color);border-radius:var(--radius-lg);font-size:1rem;font-family:var(--font-sans);transition:all var(--transition-base);background:var(--bg-card);color:var(--text-primary)}.form-group textarea{resize:vertical;min-height:120px}.form-group textarea:focus,.form-group input:focus,.form-select:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #6366f11a;transform:translateY(-1px)}.form-select{cursor:pointer;appearance:none;-webkit-appearance:none;-moz-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236366f1' d='M6 9L1 4h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:12px;padding-right:2.5rem}.form-hint{display:block;margin-top:var(--space-xs);font-size:.8125rem;color:var(--text-secondary);font-style:italic}.form-actions{display:flex;justify-content:flex-end;gap:var(--space-md);margin-top:var(--space-2xl);padding-top:var(--space-xl);border-top:1px solid var(--border-color)}.empty-state{text-align:center;padding:var(--space-3xl) var(--space-xl);background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:var(--radius-2xl);box-shadow:var(--shadow);color:var(--text-secondary)}.empty-state p{font-size:1.125rem;color:var(--text-secondary)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes 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1024px){.container{padding:var(--space-lg)}.cards-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--space-lg)}}@media (max-width: 768px){header{flex-direction:column;gap:var(--space-lg);align-items:stretch;padding:var(--space-lg)}header h1{font-size:1.75rem;text-align:center}.header-actions{justify-content:center;flex-wrap:wrap}.btn{width:100%}.flash-card{height:500px;min-height:400px}.card-text{font-size:1.125rem}.cards-grid{grid-template-columns:1fr}.card-controls{flex-direction:column}.card-navigation{width:100%;justify-content:center}.modal-content{width:95%;margin:var(--space-lg)}.form-actions{flex-direction:column-reverse}.form-actions .btn{width:100%}}@media (max-width: 480px){.container{padding:var(--space-md)}.flash-card{height:400px;min-height:350px}.card-text{font-size:1rem}.card-content{padding:var(--space-xl)}.header-actions{flex-direction:column}.header-actions .btn,.header-actions a{width:100%}}@media print{body{background:#fff}.header-actions,.card-controls,.card-item-actions{display:none}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}*:focus-visible{outline:2px solid var(--primary-color);outline-offset:2px;border-radius:var(--radius-sm)}