:root{--color-bg: #0f172a;--color-surface: #1e293b;--color-primary: #3b82f6;--color-primary-hover: #2563eb;--color-text: #f8fafc;--color-text-dim: #94a3b8;--color-success: #10b981;--color-error: #ef4444;--color-card-front: #334155;--color-card-pattern: #475569;--spacing-xs: .5rem;--spacing-sm: 1rem;--spacing-md: 1.5rem;--spacing-lg: 2rem;--spacing-xl: 3rem;--border-radius: .5rem;--transition-fast: .2s ease;--transition-normal: .3s ease;--transition-slow: .6s ease}*{margin:0;padding:0;box-sizing:border-box}html{height:100%;overflow:hidden}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.6;height:100%;overflow:hidden;position:fixed;width:100%}.app{max-width:1200px;margin:0 auto;padding:var(--spacing-md);height:100%;display:flex;flex-direction:column;gap:var(--spacing-xs);overflow:hidden}@media (max-width: 768px){.app{padding:var(--spacing-sm)}}@media (max-width: 480px){.app{padding:var(--spacing-xs)}}.app-header{display:flex;justify-content:center;align-items:center;margin-bottom:var(--spacing-xs);min-height:60px}@media (max-width: 768px){.app-header{margin-bottom:var(--spacing-sm)}}.header-center{display:flex;align-items:center;gap:var(--spacing-md);flex-wrap:wrap;justify-content:center;width:100%;max-width:100%}.new-game-action-btn{padding:var(--spacing-xs) var(--spacing-md);background:var(--color-primary);color:var(--color-text);border:none;border-radius:var(--border-radius);font-size:.875rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.new-game-action-btn:hover:not(:disabled){background:var(--color-primary-hover)}.new-game-action-btn:disabled{opacity:.5;cursor:not-allowed}.controls{position:relative}.settings-icon{background:transparent;border:none;cursor:pointer;padding:0;transition:transform var(--transition-fast),color var(--transition-fast);display:flex;align-items:center;justify-content:center;color:var(--color-text-dim)}.settings-icon .material-symbols-outlined{font-size:30px}.settings-icon:hover:not(:disabled){transform:rotate(90deg);color:var(--color-text)}.settings-icon:disabled{opacity:.5;cursor:not-allowed}.settings-menu{position:absolute;top:100%;right:0;margin-top:var(--spacing-xs);background:var(--color-surface);border-radius:var(--border-radius);padding:var(--spacing-md);box-shadow:0 8px 16px #00000080;z-index:100;width:360px;display:flex;flex-direction:column;gap:var(--spacing-sm)}@media (max-width: 480px){.settings-menu{position:fixed;top:50%;left:50%;right:auto;transform:translate(-50%,-50%);width:calc(100vw - 2rem);max-width:320px;padding:var(--spacing-sm)}}.settings-header{display:flex;justify-content:space-between;align-items:center;font-weight:600;color:var(--color-text-dim);text-transform:uppercase;font-size:.875rem;letter-spacing:.05em;margin-bottom:var(--spacing-xs)}.close-btn{background:transparent;border:none;color:var(--color-text-dim);cursor:pointer;font-size:1.25rem;padding:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center;transition:color var(--transition-fast)}.close-btn:hover{color:var(--color-text)}.difficulty-buttons{display:flex;gap:var(--spacing-xs);justify-content:center}.difficulty-btn{padding:var(--spacing-xs) var(--spacing-md);border:2px solid var(--color-primary);background:transparent;color:var(--color-primary);border-radius:var(--border-radius);font-size:1.125rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);min-width:3rem}.difficulty-btn:hover:not(:disabled){background:var(--color-primary);color:var(--color-text)}.difficulty-btn.active{background:var(--color-primary);color:var(--color-text)}.difficulty-btn:disabled{opacity:.5;cursor:not-allowed}.new-game-btn{padding:var(--spacing-xs) var(--spacing-md);background:var(--color-primary);color:var(--color-text);border:none;border-radius:var(--border-radius);font-size:.875rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);width:100%}.new-game-btn:hover:not(:disabled){background:var(--color-primary-hover)}.new-game-btn:disabled{opacity:.5;cursor:not-allowed}.settings-section{margin-bottom:var(--spacing-md)}.settings-section:last-child{margin-bottom:0}.settings-label{display:block;font-size:.75rem;color:var(--color-text-dim);text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--spacing-xs)}.grid-buttons{display:flex;gap:var(--spacing-xs);width:100%}.grid-btn{padding:var(--spacing-xs) var(--spacing-sm);border:2px solid var(--color-primary);background:transparent;color:var(--color-primary);border-radius:var(--border-radius);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);flex:1}.grid-btn.active{background:var(--color-primary);color:var(--color-text)}.grid-btn:hover:not(:disabled){background:var(--color-primary);color:var(--color-text)}.grid-btn:disabled{opacity:.5;cursor:not-allowed}.game-stats{display:flex;gap:var(--spacing-md);align-items:center;flex-wrap:wrap;justify-content:center}.stat{display:flex;align-items:baseline;gap:.5rem}.stat-label{font-size:.875rem;color:var(--color-text-dim)}.stat-value{font-size:1.25rem;font-weight:600;color:var(--color-text);transition:color var(--transition-fast)}.stat-value.completed{color:var(--color-success)}@keyframes slideDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.game-board{display:grid;gap:var(--spacing-sm);padding:0;margin:0 auto;width:min(100%,900px);aspect-ratio:1 / 1;max-height:calc(100vh - 120px)}@media (max-width: 768px){.game-board{width:100%;height:calc(100dvh - 100px)}}.grid-4x3{grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(3,1fr)}.grid-4x4{grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr)}.grid-5x3{grid-template-columns:repeat(5,1fr);grid-template-rows:repeat(3,1fr)}.grid-5x4{grid-template-columns:repeat(5,1fr);grid-template-rows:repeat(4,1fr)}.grid-5x5{grid-template-columns:repeat(5,1fr);grid-template-rows:repeat(5,1fr)}.grid-5x6{grid-template-columns:repeat(5,1fr);grid-template-rows:repeat(6,1fr)}.grid-6x5{grid-template-columns:repeat(6,1fr);grid-template-rows:repeat(5,1fr)}@media (max-width: 480px){.game-board{gap:.375rem;width:100%;height:calc(100dvh - 90px)}}.card{width:100%;height:100%;perspective:1000px;cursor:pointer;transition:transform var(--transition-fast)}.card:hover{transform:scale(1.05)}.card.matched{pointer-events:none}.card.empty-space{background:transparent;pointer-events:none;cursor:default;box-shadow:none}.card.empty-space:hover{transform:none}.card-inner{position:relative;width:100%;height:100%;text-align:center;transition:transform var(--transition-slow);transform-style:preserve-3d}.card.flipped .card-inner{transform:rotateY(180deg)}.card-front,.card-back{position:absolute;width:100%;height:100%;backface-visibility:hidden;border-radius:var(--border-radius);overflow:hidden;box-shadow:0 4px 6px #0000004d}.card-front{background:var(--color-card-front);display:flex;align-items:center;justify-content:center}.card-back-pattern{width:100%;height:100%;background:repeating-linear-gradient(45deg,var(--color-card-front),var(--color-card-front) 10px,var(--color-card-pattern) 10px,var(--color-card-pattern) 20px);opacity:.3}.card-back{background:var(--color-surface);transform:rotateY(180deg)}.card-image{width:100%;height:100%;object-fit:cover}.card.matched .card-back{opacity:.6;animation:matchPulse .5s ease}.game-complete .card.matched .card-back{opacity:1}@keyframes matchPulse{0%,to{transform:rotateY(180deg) scale(1)}50%{transform:rotateY(180deg) scale(1.1)}}.error-message{padding:var(--spacing-md);background:var(--color-error);color:var(--color-text);border-radius:var(--border-radius);text-align:center;font-weight:500}.loading-message{padding:var(--spacing-xl);text-align:center;font-size:1.25rem;color:var(--color-text-dim);animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@media (max-width: 768px){.header-center,.game-stats{gap:var(--spacing-sm)}}@media (max-width: 600px){.header-center{gap:var(--spacing-xs)}.stat{font-size:.875rem}.stat-label{font-size:.75rem}.stat-value{font-size:1rem}}@media (max-width: 480px){.app-header{min-height:auto}.new-game-action-btn{font-size:.75rem;padding:.375rem .75rem}}.card:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}button:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.game-type-buttons{display:flex;flex-direction:column;gap:var(--spacing-xs);width:100%}.game-type-btn{padding:var(--spacing-sm) var(--spacing-md);border:2px solid var(--color-primary);background:transparent;color:var(--color-primary);border-radius:var(--border-radius);font-size:.875rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);width:100%}.game-type-btn:hover:not(:disabled){background:var(--color-primary);color:var(--color-text)}.game-type-btn.active{background:var(--color-primary);color:var(--color-text)}.game-type-btn:disabled{opacity:.5;cursor:not-allowed}.coming-soon{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-xl);text-align:center;color:var(--color-text-dim);gap:var(--spacing-sm)}.coming-soon h2{color:var(--color-text);font-size:1.5rem}.sequence-game-container{display:flex;flex-direction:column;gap:var(--spacing-md);padding:var(--spacing-sm) 0;margin:0 auto;width:min(100%,900px);max-height:calc(100vh - 120px);overflow-y:auto;overflow-x:visible}@media (max-width: 768px){.sequence-game-container{width:100%;height:calc(100dvh - 100px);gap:var(--spacing-sm);padding:var(--spacing-xs) 0}}.sequence-section{display:flex;flex-direction:column;gap:var(--spacing-sm);align-items:center;width:100%;min-height:0;overflow:visible;padding:6px 0}.sequence-label{font-size:.875rem;font-weight:600;color:var(--color-text-dim);text-transform:uppercase;letter-spacing:.05em}.sequence-row{display:flex;gap:var(--spacing-sm);flex-wrap:wrap;justify-content:center;overflow:visible;width:100%;max-width:630px;padding:var(--spacing-xs) 0}.sequence-row.max-cards-4{max-width:490px!important}.sequence-row.max-cards-5{max-width:630px!important}@media (max-width: 768px){.sequence-row{max-width:530px}.sequence-row.max-cards-4{max-width:410px!important}.sequence-row.max-cards-5{max-width:530px!important}}@media (max-width: 480px){.sequence-row{gap:var(--spacing-xs);max-width:360px}.sequence-row.max-cards-4{max-width:290px!important}.sequence-row.max-cards-5{max-width:360px!important}.sequence-section{gap:.375rem;padding:4px 0}.sequence-label{font-size:.75rem}}.sequence-card{perspective:1000px;cursor:pointer;transition:transform var(--transition-fast);border-radius:var(--border-radius);flex-shrink:0;position:relative}.sequence-card:hover:not(.disabled):not(.placeholder){transform:scale(1.05);z-index:20}.sequence-card.disabled{cursor:default}.sequence-card.error:before{content:"";position:absolute;inset:-4px;border:3px solid var(--color-error);border-radius:calc(var(--border-radius) + 2px);pointer-events:none;z-index:10;animation:errorPulse .5s ease}@keyframes errorPulse{0%,to{opacity:1}50%{opacity:.7}}.sequence-card.small{width:80px;height:107px}.sequence-card.medium{width:110px;height:147px}.sequence-card.large{width:150px;height:200px}@media (max-width: 768px){.sequence-card.small{width:70px;height:93px}.sequence-card.medium{width:90px;height:120px}.sequence-card.large{width:120px;height:160px}}@media (max-width: 480px){.sequence-card.small{width:60px;height:80px}.sequence-card.medium{width:65px;height:87px}.sequence-card.large{width:80px;height:107px}}.sequence-card-inner{position:relative;width:100%;height:100%;text-align:center;transition:transform var(--transition-slow);transform-style:preserve-3d}.sequence-card.flipped .sequence-card-inner{transform:rotateY(180deg)}.sequence-card-front,.sequence-card-back{position:absolute;width:100%;height:100%;backface-visibility:hidden;border-radius:var(--border-radius);overflow:hidden;box-shadow:0 4px 6px #0000004d}.sequence-card-front{background:var(--color-card-front);display:flex;align-items:center;justify-content:center}.sequence-card-back{background:var(--color-surface);transform:rotateY(180deg)}.sequence-card.placeholder{border:2px dashed var(--color-text-dim);background:transparent;box-shadow:none;cursor:default}.sequence-card.placeholder:hover{transform:none}.placeholder-content{width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:var(--color-text-dim);font-size:2rem}.sequence-difficulty-buttons{display:flex;flex-direction:column;gap:var(--spacing-xs);width:100%}.sequence-difficulty-btn{padding:var(--spacing-sm) var(--spacing-md);border:2px solid var(--color-primary);background:transparent;color:var(--color-primary);border-radius:var(--border-radius);font-size:.875rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);width:100%}.sequence-difficulty-btn:hover:not(:disabled){background:var(--color-primary);color:var(--color-text)}.sequence-difficulty-btn.active{background:var(--color-primary);color:var(--color-text)}.sequence-difficulty-btn:disabled{opacity:.5;cursor:not-allowed}.game-result{text-align:center;padding:var(--spacing-md);border-radius:var(--border-radius);font-size:1.25rem;font-weight:600;margin:var(--spacing-md) auto 0;max-width:min(100%,600px);animation:slideDown .3s ease}.game-result.correct{background:var(--color-success);color:var(--color-text)}.game-result.incorrect{background:var(--color-error);color:var(--color-text)}@media (max-width: 480px){.game-result{font-size:1rem;padding:var(--spacing-sm);margin-top:var(--spacing-sm)}}.modal-overlay{position:fixed;inset:0;background:#000c;display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--spacing-md);animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:var(--color-surface);border-radius:var(--border-radius);max-width:360px;width:100%;box-shadow:0 20px 60px #00000080;animation:slideUp .3s ease}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-body{padding:var(--spacing-sm) var(--spacing-md);display:flex;flex-direction:column;gap:var(--spacing-sm)}.stats-section{background:#ffffff0d;padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--border-radius)}.stats-section h3{margin:0 0 var(--spacing-xs) 0;font-size:.75rem;color:var(--color-text-dim);text-transform:uppercase;letter-spacing:.05em;font-weight:600}.stat-row{display:flex;justify-content:space-between;padding:.25rem 0}.stat-label{color:var(--color-text-dim);font-size:.875rem}.stat-value{color:var(--color-text);font-weight:600;font-size:.875rem}.record-celebration{display:flex;flex-direction:column;gap:0;align-items:center}.record-badge{padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--border-radius);font-size:1rem;font-weight:700;text-align:center;animation:bounceIn .5s ease}@keyframes bounceIn{0%{transform:scale(.8);opacity:0}50%{transform:scale(1.05)}to{transform:scale(1);opacity:1}}.record-badge.overall{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#1e293b}.record-badge.personal{background:linear-gradient(135deg,#3b82f6,#2563eb);color:var(--color-text)}.best-scores{display:flex;gap:var(--spacing-xs);flex-wrap:wrap}.score-comparison{flex:1;min-width:100%;background:#ffffff0d;padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--border-radius)}.score-comparison h4{margin:0 0 .25rem;font-size:.75rem;color:var(--color-primary);text-transform:uppercase;letter-spacing:.05em;font-weight:600}.modal-footer{padding:var(--spacing-sm) var(--spacing-md);border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:flex-end}.modal-close-btn{padding:var(--spacing-xs) var(--spacing-md);background:var(--color-primary);color:var(--color-text);border:none;border-radius:var(--border-radius);font-size:.875rem;font-weight:600;cursor:pointer;transition:background var(--transition-fast)}.modal-close-btn:hover{background:var(--color-primary-hover)}@media (max-width: 480px){.modal-content{margin:var(--spacing-sm);max-width:calc(100% - 2rem)}.record-badge{font-size:.875rem;padding:var(--spacing-xs) var(--spacing-sm)}.stats-section h3,.score-comparison h4{font-size:.7rem}}