:root{--color-bg-primary: #0a0a0f;--color-bg-secondary: #12121a;--color-bg-card: #1a1a24;--color-bg-elevated: #22222e;--color-accent-primary: #00d4aa;--color-accent-secondary: #7c3aed;--color-accent-warning: #f59e0b;--color-accent-danger: #ef4444;--color-accent-success: #22c55e;--color-text-primary: #ffffff;--color-text-secondary: #a1a1aa;--color-text-muted: #71717a;--gradient-primary: linear-gradient(135deg, #00d4aa 0%, #7c3aed 100%);--gradient-card: linear-gradient(145deg, rgba(26, 26, 36, .9), rgba(18, 18, 26, .9));--gradient-glow: radial-gradient(circle at center, rgba(0, 212, 170, .15), transparent 70%);--shadow-sm: 0 2px 4px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px rgba(0, 212, 170, .3);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 48px;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--font-size-4xl: 2.5rem;--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);background:var(--color-bg-primary);color:var(--color-text-primary);min-height:100vh;line-height:1.6;overflow-x:hidden}body:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background:var(--gradient-glow);pointer-events:none;z-index:-1}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.2}h1{font-size:var(--font-size-4xl)}h2{font-size:var(--font-size-3xl)}h3{font-size:var(--font-size-2xl)}h4{font-size:var(--font-size-xl)}a{color:var(--color-accent-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-text-primary)}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--space-md)}.page{min-height:100vh;display:flex;flex-direction:column;padding:var(--space-lg)}.header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-md) 0;margin-bottom:var(--space-xl)}.logo{display:flex;align-items:center;gap:var(--space-sm);font-size:var(--font-size-xl);font-weight:700}.logo-icon{width:40px;height:40px;background:var(--gradient-primary);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:20px}.card{background:var(--gradient-card);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);padding:var(--space-lg);transition:all var(--transition-base)}.card:hover{border-color:#00d4aa4d;box-shadow:var(--shadow-glow)}.card-header{margin-bottom:var(--space-md)}.card-title{font-size:var(--font-size-xl);margin-bottom:var(--space-xs)}.card-description{color:var(--color-text-secondary);font-size:var(--font-size-sm)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-md) var(--space-lg);font-family:inherit;font-size:var(--font-size-base);font-weight:600;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-base);text-decoration:none}.btn-primary{background:var(--gradient-primary);color:var(--color-bg-primary)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow)}.btn-secondary{background:var(--color-bg-elevated);color:var(--color-text-primary);border:1px solid rgba(255,255,255,.1)}.btn-secondary:hover{background:var(--color-bg-card);border-color:var(--color-accent-primary)}.btn-danger{background:var(--color-accent-danger);color:#fff}.btn-danger:hover{background:#dc2626}.btn-lg{padding:var(--space-lg) var(--space-xl);font-size:var(--font-size-lg)}.btn-sm{padding:var(--space-sm) var(--space-md);font-size:var(--font-size-sm)}.btn-block{width:100%}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.form-group{margin-bottom:var(--space-md)}.form-label{display:block;margin-bottom:var(--space-sm);font-size:var(--font-size-sm);font-weight:500;color:var(--color-text-secondary)}.form-input,.form-select{width:100%;padding:var(--space-md);font-family:inherit;font-size:var(--font-size-base);color:var(--color-text-primary);background:var(--color-bg-secondary);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-md);outline:none;transition:all var(--transition-fast)}.form-input:focus,.form-select:focus{border-color:var(--color-accent-primary);box-shadow:0 0 0 3px #00d4aa33}.form-input::placeholder{color:var(--color-text-muted)}.level-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:var(--space-sm)}.level-btn{aspect-ratio:1;display:flex;align-items:center;justify-content:center;font-size:var(--font-size-lg);font-weight:600;background:var(--color-bg-secondary);border:2px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.level-btn:hover{border-color:var(--color-accent-primary)}.level-btn.selected{background:var(--gradient-primary);color:var(--color-bg-primary)}.level-btn[data-tier=beginner]{border-color:#94a3b8}.level-btn[data-tier=elementary]{border-color:#22c55e}.level-btn[data-tier=intermediate]{border-color:#eab308}.level-btn[data-tier=advanced]{border-color:#f97316}.level-btn[data-tier=expert]{border-color:#ec4899}.level-btn[data-tier=professional]{border-color:#06b6d4}.badge{display:inline-flex;align-items:center;padding:var(--space-xs) var(--space-sm);font-size:var(--font-size-xs);font-weight:600;text-transform:uppercase;letter-spacing:.05em;border-radius:var(--radius-full)}.badge-waiting{background:#f59e0b33;color:var(--color-accent-warning)}.badge-playing{background:#22c55e33;color:var(--color-accent-success)}.badge-resting{background:#7c3aed33;color:var(--color-accent-secondary)}.player-list{display:flex;flex-direction:column;gap:var(--space-sm)}.player-item{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);background:var(--color-bg-secondary);border-radius:var(--radius-md);transition:all var(--transition-fast)}.player-item:hover{background:var(--color-bg-elevated)}.player-avatar{width:40px;height:40px;background:var(--gradient-primary);border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;font-weight:700}.player-info{flex:1}.player-name{font-weight:600}.player-level{font-size:var(--font-size-sm);color:var(--color-text-secondary)}.courts-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--space-lg)}.court-card{background:var(--color-bg-card);border:2px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);overflow:hidden}.court-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-md);background:var(--color-bg-elevated)}.court-number{font-size:var(--font-size-lg);font-weight:700}.court-body{padding:var(--space-lg)}.court-teams{display:flex;align-items:center;justify-content:center;gap:var(--space-lg)}.court-team{flex:1;text-align:center}.court-vs{font-size:var(--font-size-xl);font-weight:700;color:var(--color-accent-primary)}.qr-container{display:flex;flex-direction:column;align-items:center;padding:var(--space-xl);background:#fff;border-radius:var(--radius-lg)}.qr-code{margin-bottom:var(--space-md)}.session-code{font-size:var(--font-size-3xl);font-weight:700;letter-spacing:.2em;color:var(--color-bg-primary)}.connection-status{display:flex;align-items:center;gap:var(--space-sm);font-size:var(--font-size-sm)}.connection-dot{width:8px;height:8px;border-radius:var(--radius-full);animation:pulse 2s infinite}.connection-dot.connected{background:var(--color-accent-success)}.connection-dot.disconnected{background:var(--color-accent-danger);animation:none}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.score-input-group{display:flex;align-items:center;gap:var(--space-md)}.score-input{width:80px;height:80px;font-size:var(--font-size-3xl);font-weight:700;text-align:center;background:var(--color-bg-secondary);border:2px solid rgba(255,255,255,.1);border-radius:var(--radius-md);color:var(--color-text-primary)}.score-separator{font-size:var(--font-size-2xl);color:var(--color-text-muted)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}.fade-in{animation:fadeIn var(--transition-base) forwards}.slide-in{animation:slideIn var(--transition-base) forwards}.toast-container{position:fixed;bottom:var(--space-lg);right:var(--space-lg);z-index:1000;display:flex;flex-direction:column;gap:var(--space-sm)}.toast{padding:var(--space-md) var(--space-lg);background:var(--color-bg-elevated);border-radius:var(--radius-md);border-left:4px solid var(--color-accent-primary);box-shadow:var(--shadow-lg);animation:slideIn var(--transition-base) forwards}.toast-error{border-left-color:var(--color-accent-danger)}.toast-success{border-left-color:var(--color-accent-success)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000c;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:100;opacity:0;visibility:hidden;transition:all var(--transition-base)}.modal-overlay.active{opacity:1;visibility:visible}.modal{background:var(--color-bg-card);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);padding:var(--space-xl);max-width:500px;width:90%;transform:scale(.9);transition:transform var(--transition-base)}.modal-overlay.active .modal{transform:scale(1)}.spinner{width:40px;height:40px;border:3px solid var(--color-bg-elevated);border-top-color:var(--color-accent-primary);border-radius:var(--radius-full);animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-2xl);text-align:center;color:var(--color-text-muted)}.empty-state-icon{font-size:48px;margin-bottom:var(--space-md)}@media(max-width:768px){:root{--font-size-4xl: 2rem;--font-size-3xl: 1.5rem}.level-grid{grid-template-columns:repeat(6,1fr)}.courts-grid{grid-template-columns:1fr}}@media(max-width:480px){.page,.card{padding:var(--space-md)}}