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.piece-outline{stroke:#00c80066;stroke-width:2}.puzzle-piece.locked{cursor:not-allowed;opacity:.6;filter:grayscale(30%)}.lock-indicator{position:absolute;top:-8px;right:-8px;background-color:var(--color-warning);color:#fff;font-size:.625rem;padding:2px 6px;border-radius:var(--border-radius-sm);font-weight:600;white-space:nowrap}.puzzle-complete{background-color:var(--color-success);color:#fff;text-align:center}.puzzle-complete h2{margin:0;color:#fff}.puzzle-complete button{background-color:#fff!important;color:var(--color-success)!important;border:2px solid white!important}@media(prefers-contrast:high){.puzzle-piece .piece-outline{stroke:#0009;stroke-width:2}.puzzle-piece.placed .piece-outline{stroke:#00c800;stroke-width:3}}@media(max-width:768px){.puzzle-container{min-height:400px}.grid-cell{width:80px;height:80px}.grid-size-buttons{flex-direction:column}.puzzle-piece{padding:10px;margin:-10px}}.connect4-game{width:100%;max-width:700px;margin:0 auto;position:relative}.connect4-setup{max-width:500px;margin:0 auto}.player-assignments{display:flex;flex-direction:column;gap:var(--spacing-md);width:100%}.player-assignment{display:flex;align-items:center;justify-content:center;gap:var(--spacing-md);font-size:1.125rem}.color-indicator{width:32px;height:32px;border-radius:50%;border:2px solid var(--color-text)}.color-indicator.red{background-color:#e74c3c}.color-indicator.yellow{background-color:#f1c40f}.game-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-md);background-color:var(--color-surface);border-radius:var(--border-radius-lg);border:2px solid var(--color-border);flex-wrap:wrap;gap:var(--spacing-md)}.player-info{display:flex;gap:var(--spacing-lg);flex-wrap:wrap}.player-status{display:flex;align-items:center;gap:var(--spacing-sm);opacity:.5;transition:opacity .2s}.player-status.active{opacity:1}.player-status span{font-weight:600;color:var(--color-text)}.your-color{display:flex;align-items:center;gap:var(--spacing-sm);font-weight:600;color:var(--color-text)}.connect4-view-toggle{display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-md);padding:var(--spacing-sm) var(--spacing-md);background-color:var(--color-surface);border-radius:var(--border-radius-lg);border:2px solid var(--color-border)}.connect4-view-label{font-weight:600;color:var(--color-text)}.connect4-view-buttons{display:flex;gap:var(--spacing-sm)}.connect4-selecting-overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:5;background-size:cover;background-position:center;border-radius:var(--border-radius-lg);display:grid;place-items:center;padding:var(--spacing-lg)}.connect4-selecting-overlay:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:#0a0f1673;border-radius:inherit}.connect4-selecting-overlay>*{position:relative;z-index:1}.connect4-selecting-text{background:#0c121cb3;color:#fff;padding:.75rem 1.5rem;border-radius:999px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;animation:connect4-flash .9s infinite}.connect4-start-note,.connect4-spectators{font-size:.9rem;color:var(--color-text-secondary);text-align:center}.connect4-board-2d{position:relative;width:min(100%,560px);margin:0 auto;padding:var(--spacing-md);border-radius:var(--border-radius-lg);background-color:#1d2b3f;border:2px solid var(--color-border);box-shadow:var(--shadow-lg)}.connect4-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:var(--spacing-sm);background:#25344a;padding:var(--spacing-md);border-radius:var(--border-radius-md)}.connect4-cell{width:100%;aspect-ratio:1 / 1;border-radius:50%;background:#0f1722;border:2px solid rgba(255,255,255,.08);position:relative;overflow:hidden}.connect4-piece{position:absolute;top:10%;right:10%;bottom:10%;left:10%;border-radius:50%;box-shadow:inset 0 0 10px #0006;transition:transform .2s ease,opacity .2s ease}.connect4-piece.red{background:radial-gradient(circle at 30% 30%,#ff6b5a,#b3261e)}.connect4-piece.yellow{background:radial-gradient(circle at 30% 30%,#ffe37a,#d19a00)}.connect4-piece.preview{opacity:.5}.connect4-piece.last-move{transform:scale(1.08);box-shadow:0 0 0 3px #fff9}.connect4-columns{position:absolute;inset:var(--spacing-md);display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:var(--spacing-sm)}.connect4-column-button{background:transparent;border:none;cursor:pointer}.connect4-column-button:disabled{cursor:not-allowed}.connect4-controls{padding:var(--spacing-md);background-color:var(--color-surface);border-radius:var(--border-radius-lg);border:2px solid var(--color-border)}.connect4-controls-summary{cursor:pointer;font-weight:600;color:var(--color-text);list-style:none}.connect4-controls-summary::-webkit-details-marker{display:none}.connect4-controls[open] .connect4-controls-summary{margin-bottom:var(--spacing-md)}.connect4-controls-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--spacing-md)}.connect4-control label{display:block;font-weight:600;margin-bottom:var(--spacing-sm);color:var(--color-text)}.connect4-slider{width:100%}.connect4-board-3d{position:relative;width:min(100%,760px);margin:0 auto;padding:var(--spacing-md);border-radius:var(--border-radius-lg);background:radial-gradient(circle at top,#2e3d51cc,#131c28f2);border:2px solid var(--color-border);box-shadow:var(--shadow-lg)}.connect4-3d-canvas{width:100%;height:420px}.connect4-3d-controls{display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-sm);margin-bottom:var(--spacing-sm);flex-wrap:wrap}.connect4-3d-instructions{font-size:.75rem;color:#ffffffbf;text-transform:uppercase;letter-spacing:.08em;text-align:center;flex:1 1 260px}.connect4-3d-reset{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid rgba(255,255,255,.2);background:#ffffff14;color:#f8f8f8;padding:.4rem .8rem;border-radius:999px;font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;cursor:pointer;transition:transform .15s ease,background .15s ease}.connect4-3d-reset:hover{transform:translateY(-1px);background:#ffffff29}.connect4-3d-fallback{padding:var(--spacing-lg);background-color:var(--color-surface);border-radius:var(--border-radius-lg);border:2px dashed var(--color-border);text-align:center;color:var(--color-text-secondary)}.game-over{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;text-align:center}.game-over h2{margin:0;color:#fff}.winner-indicator{width:80px;height:80px;border-radius:50%;border:4px solid white;animation:celebrate 1s ease-in-out infinite}.winner-indicator.red{background-color:#e74c3c}.winner-indicator.yellow{background-color:#f1c40f}@keyframes celebrate{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}@keyframes connect4-flash{0%,to{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(1.05)}}@media(max-width:768px){.color-indicator{width:24px;height:24px}.game-header{flex-direction:column;align-items:flex-start}}.game-lobby{min-height:100vh;padding:var(--spacing-xl) 0;background-color:var(--color-background)}.lobby-header{text-align:center}.lobby-header h1{font-size:2rem;font-weight:700;margin-bottom:var(--spacing-lg);color:var(--color-text)}.room-code-card{display:inline-block;background-color:var(--color-primary);color:#fff}.room-code-label{font-size:.875rem;opacity:.9;margin-bottom:var(--spacing-xs)}.room-code{font-size:1.5rem;font-weight:700;letter-spacing:2px;font-family:Courier New,monospace}.section-title{font-size:1.5rem;font-weight:600;margin-bottom:var(--spacing-sm);color:var(--color-text)}.section-description{color:var(--color-text-secondary);margin-bottom:var(--spacing-lg)}.games-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.game-card{transition:transform .2s,box-shadow .2s}.game-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.game-name{font-size:1.25rem;font-weight:600;margin-bottom:var(--spacing-xs);color:var(--color-text)}.game-description{color:var(--color-text-secondary);margin-bottom:var(--spacing-xs)}.game-meta{display:flex;align-items:center;gap:var(--spacing-sm);margin-top:var(--spacing-sm)}.game-players{font-size:.875rem;color:var(--color-text-secondary);font-weight:600;margin:0}.players-list{display:flex;flex-direction:column;gap:var(--spacing-sm)}.player-item{padding:var(--spacing-sm);border-radius:var(--border-radius);background-color:var(--color-surface);border:1px solid var(--color-border)}.player-name{font-weight:600;color:var(--color-text);flex:1}.no-players{text-align:center;color:var(--color-text-secondary);font-style:italic;padding:var(--spacing-lg)}.host-message{text-align:center;color:var(--color-text-secondary);font-size:.875rem;margin-top:var(--spacing-sm)}.lobby-actions{display:flex;justify-content:center;padding-top:var(--spacing-lg);border-top:2px solid var(--color-border)}.game-room{min-height:100vh;padding:var(--spacing-md);background-color:var(--color-background)}.game-room-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-md);background-color:var(--color-surface);border-radius:var(--border-radius-lg);border:2px solid var(--color-border);flex-wrap:wrap;gap:var(--spacing-md)}.room-info{display:flex;align-items:center;gap:var(--spacing-lg);flex-wrap:wrap}.room-info h1{font-size:1.5rem;font-weight:700;color:var(--color-text);margin:0}.game-type{color:var(--color-text-secondary);margin:var(--spacing-xs) 0 0 0;font-size:.875rem}.room-badges{display:flex;gap:var(--spacing-sm);align-items:center}.section-title{font-size:1.25rem;font-weight:600;color:var(--color-text);margin-bottom:var(--spacing-md)}.video-section{padding:var(--spacing-md);background-color:var(--color-surface);border-radius:var(--border-radius-lg);border:2px solid var(--color-border)}.video-section-header{display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-md);margin-bottom:var(--spacing-md)}.video-layout-toggle{display:flex;gap:var(--spacing-sm);flex-wrap:wrap}.pin-toggle{display:inline-flex;align-items:center;gap:var(--spacing-xs);font-size:.875rem;font-weight:600;color:var(--color-text)}.pin-toggle input{position:absolute;opacity:0;pointer-events:none}.pin-toggle-slider{position:relative;width:44px;height:24px;background-color:var(--color-border);border-radius:999px;transition:background-color .2s ease;box-shadow:inset 0 0 0 1px #00000014}.pin-toggle-slider:after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;background-color:var(--color-surface);border-radius:50%;transition:transform .2s ease;box-shadow:var(--shadow-sm)}.pin-toggle input:checked+.pin-toggle-slider{background-color:var(--color-primary)}.pin-toggle input:checked+.pin-toggle-slider:after{transform:translate(20px)}.game-area{padding:var(--spacing-md)}.game-container{width:100%;max-width:none;display:flex;justify-content:center;padding:var(--spacing-lg)}.no-game{text-align:center;padding:var(--spacing-xl);color:var(--color-text-secondary)}.game-placeholder{text-align:center;padding:var(--spacing-xl);background-color:var(--color-surface);border-radius:var(--border-radius-lg);border:2px dashed var(--color-border);width:100%;max-width:600px}.game-placeholder h3{font-size:1.5rem;font-weight:600;color:var(--color-text);margin-bottom:var(--spacing-md);text-transform:capitalize}.hint{color:var(--color-text-secondary);font-size:.875rem;font-style:italic;margin-top:var(--spacing-sm)}.players-section{width:100%;max-width:500px;margin-top:var(--spacing-xl)}.players-section h3{font-size:1.125rem;font-weight:600;color:var(--color-text);margin-bottom:var(--spacing-md)}.player-item{background-color:var(--color-background)}.player-info-row{display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-md)}.player-name{font-weight:600;color:var(--color-text)}.player-badges{display:flex;gap:var(--spacing-sm);align-items:center}@media(max-width:768px){.game-room-header{flex-direction:column;align-items:flex-start}.room-info{flex-direction:column;align-items:flex-start;gap:var(--spacing-sm)}.player-info-row{flex-direction:column;align-items:flex-start}}.settings-page{min-height:100vh;padding:var(--spacing-xl) 0;background-color:var(--color-background)}.settings-header{text-align:center;margin-bottom:var(--spacing-lg)}.settings-header h1{font-size:2rem;font-weight:700;margin-bottom:var(--spacing-sm);color:var(--color-text)}.settings-header p{color:var(--color-text-secondary)}.setting-group{padding:var(--spacing-md) 0}.setting-group:not(:last-child){border-bottom:2px solid var(--color-border)}.setting-group h2{font-size:1.25rem;font-weight:600;margin-bottom:var(--spacing-md);color:var(--color-text)}.setting-item{margin-bottom:var(--spacing-lg)}.setting-label{font-weight:600;font-size:1rem;color:var(--color-text);display:block;margin-bottom:var(--spacing-sm)}.setting-description{color:var(--color-text-secondary);font-size:.875rem;margin-top:var(--spacing-xs);font-weight:400}.setting-slider{width:100%;min-height:var(--min-touch-target);cursor:pointer}.setting-checkbox{display:flex;flex-direction:column;cursor:pointer}.setting-checkbox input[type=checkbox]{width:var(--min-touch-target);height:var(--min-touch-target);cursor:pointer;margin-bottom:var(--spacing-sm)}.settings-actions{display:flex;justify-content:space-between;gap:var(--spacing-md);padding-top:var(--spacing-lg);border-top:2px solid var(--color-border)}@media(max-width:768px){.settings-actions{flex-direction:column}}:root{--color-primary: #0056b3;--color-primary-hover: #004494;--color-secondary: #6c757d;--color-secondary-hover: #545b62;--color-success: #0f5132;--color-warning: #997404;--color-danger: #842029;--color-background: #ffffff;--color-surface: #f8f9fa;--color-text: #212529;--color-text-secondary: #495057;--color-border: #dee2e6;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--min-touch-target: 44px;--border-radius-sm: .25rem;--border-radius-md: .5rem;--border-radius-lg: .75rem;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .1);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .1);--focus-outline: 3px solid #0056b3;--focus-outline-offset: 2px}.high-contrast{--color-primary: #0000ff;--color-primary-hover: #0000cc;--color-background: #000000;--color-surface: #1a1a1a;--color-text: #ffffff;--color-text-secondary: #cccccc;--color-border: #ffffff;--color-success: #00ff00;--color-warning: #ffff00;--color-danger: #ff0000}.reduced-motion *,.reduced-motion *:before,.reduced-motion *:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--color-background);color:var(--color-text);min-height:100vh}*:focus{outline:var(--focus-outline);outline-offset:var(--focus-outline-offset)}*:focus:not(:focus-visible){outline:none}*:focus-visible{outline:var(--focus-outline);outline-offset:var(--focus-outline-offset)}.skip-to-main{position:absolute;top:-40px;left:0;background:var(--color-primary);color:#fff;padding:8px;text-decoration:none;z-index:100}.skip-to-main:focus{top:0}.visually-hidden,.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}