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ease;position:relative;overflow:hidden;box-shadow:var(--shadow-light)}.game-blunder-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-medium);background:linear-gradient(135deg,var(--bg-tertiary) 0%,var(--chess-dark) 100%);border-color:var(--chess-green)}.game-blunder-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px;gap:15px}.game-blunder-info{flex:1}.game-players{font-size:1.1rem;font-weight:600;color:var(--chess-light);margin-bottom:6px}.game-details{font-size:.9rem;color:var(--text-secondary)}.game-meta{color:var(--text-muted)}.game-link-disabled{font-size:.8rem;color:var(--text-muted);font-style:italic;padding:4px 8px;background:var(--bg-primary);border-radius:4px}.game-blunder-stats{display:flex;flex-direction:column;align-items:flex-end;gap:8px}.blunder-count{background:linear-gradient(135deg,var(--accent-danger),#c53030);color:var(--white-piece);padding:6px 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1200px){.game-blunder-details:not(.collapsed){max-height:45vh}}.game-blunders-list{display:flex;flex-direction:column;gap:12px}.game-blunders-header{font-weight:600;color:var(--chess-light);margin-bottom:15px;font-size:1.1rem}.individual-blunder{background:#ffffff1a;border-radius:8px;padding:16px;border-left:3px solid var(--accent-danger);transition:all .3s ease;border:1px solid var(--chess-dark)}.individual-blunder:hover{transform:translateY(-1px);box-shadow:var(--shadow-light);background:#ffffff26}.blunder-header{margin-bottom:8px}.blunder-move{font-weight:600;color:var(--chess-light);font-size:1rem}.blunder-description{color:var(--text-secondary);font-size:.9rem;line-height:1.4;margin-bottom:8px}.blunder-best-move{background:#38b2ac1a;border-left:3px solid #38b2ac;padding:8px 12px;margin:8px 0;border-radius:6px;font-size:.9rem;color:#4a5568}.other-blunders{margin:30px 0}.blunders-section-header{display:flex;justify-content:space-between;align-items:center;cursor:pointer;padding:16px 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var(--chess-dark);transition:all .3s ease;position:relative;overflow:hidden;box-shadow:var(--shadow-light)}.blunder-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-medium);background:linear-gradient(135deg,var(--bg-tertiary) 0%,var(--chess-dark) 100%);border-color:var(--chess-green)}.blunder-item.expanded{background:linear-gradient(135deg,rgba(118,150,86,.1) 0%,var(--bg-tertiary) 100%);border-left-color:var(--chess-green)}.blunder-item-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.blunder-item-title{font-weight:600;color:var(--chess-light);font-size:1.2rem;flex:1;margin-right:15px}.blunder-item-score{background:linear-gradient(135deg,var(--chess-green),var(--chess-dark));color:var(--white-piece);padding:6px 14px;border-radius:20px;font-size:.9rem;font-weight:600;flex-shrink:0;box-shadow:var(--shadow-light)}.blunder-item.expanded .blunder-item-score{background:linear-gradient(135deg,var(--chess-light),var(--chess-green));color:var(--black-piece)}.blunder-item-description{color:var(--text-secondary);line-height:1.5;margin-bottom:12px}.blunder-item-stats{display:flex;gap:20px;margin-bottom:12px;font-size:.9rem}.blunder-stat{color:var(--text-muted)}.blunder-stat strong{color:var(--chess-light)}.blunder-toggle-section{margin:15px 0 10px;text-align:center}.blunder-toggle-btn{background:linear-gradient(135deg,var(--chess-green),var(--chess-dark));color:var(--white-piece);border:none;padding:10px 18px;border-radius:8px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .3s ease;display:inline-flex;align-items:center;gap:8px;min-width:150px;justify-content:center;box-shadow:var(--shadow-light);border:1px solid var(--chess-light)}.blunder-toggle-btn:hover{background:linear-gradient(135deg,var(--chess-light),var(--chess-green));color:var(--black-piece);transform:translateY(-2px);box-shadow:var(--shadow-medium)}.blunder-toggle-btn:active{transform:translateY(0)}.blunder-toggle-icon{font-size:.8rem;transition:transform .3s ease}.blunder-toggle-icon.rotated{transform:rotate(180deg)}.blunder-details{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .3s ease,opacity .3s ease;padding:0;opacity:0}.blunder-details.collapsed{max-height:0;padding:0;opacity:0}.blunder-details:not(.collapsed){max-height:400px;padding:20px 8px 20px 0;opacity:1;border-top:1px solid rgba(56,178,172,.2);overflow-y:auto}.blunder-occurrences-header{font-weight:600;color:#fff;margin-bottom:15px;font-size:1.05rem}.blunder-occurrence{background:#fffc;border-radius:8px;padding:12px 16px;margin-bottom:10px;border-left:3px solid #4299e1}.blunder-occurrence:last-child{margin-bottom:0}.blunder-occurrence-header{font-weight:600;color:#2d3748;margin-bottom:8px;font-size:.95rem}.occurrence-move{font-size:1rem;font-weight:700;color:#2d3748;margin-bottom:4px}.occurrence-game-info{font-size:.9rem;font-weight:600;color:#4a5568;margin-bottom:4px}.occurrence-game-meta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:6px}.game-meta-item{font-size:.8rem;color:#718096;display:flex;align-items:center;gap:4px}.blunder-occurrence-description{color:#4a5568;font-size:.9rem;line-height:1.4;margin-bottom:8px}.occurrence-best-move{background:#667eea1a;border-left:3px solid #667eea;padding:8px 12px;margin:8px 0;border-radius:6px;font-size:.9rem;color:#4a5568}.occurrence-game-link{margin-top:8px;padding-top:8px;border-top:1px solid rgba(113,128,150,.2)}.game-link-small{background:#4299e1;color:#fff;text-decoration:none;padding:6px 12px;border-radius:6px;font-size:.85rem;font-weight:500;transition:all .3s ease;display:inline-flex;align-items:center;gap:4px}.game-link-small:hover{background:#3182ce;transform:translateY(-1px);box-shadow:0 2px 8px #4299e14d}.game-link-small:active{transform:translateY(0)}.occurrence-game-link-disabled{font-size:.8rem;color:#a0aec0;font-style:italic;margin-top:8px;padding-top:8px;border-top:1px solid rgba(113,128,150,.1)}.no-details{color:#718096;font-style:italic;text-align:center;padding:20px}.hidden{display:none!important}.text-center{text-align:center}.win-prob-drop{background:linear-gradient(135deg,#e53e3e,#c53030);color:#fff;padding:2px 6px;border-radius:4px;font-size:.8rem;font-weight:600;margin-left:8px;box-shadow:0 2px 4px #e53e3e4d;display:inline-block;white-space:nowrap}.win-prob-drop:hover{background:linear-gradient(135deg,#c53030,#9c1f1f);transform:translateY(-1px);box-shadow:0 3px 6px #e53e3e66}.footer{margin-top:auto;text-align:center;padding:32px 24px;color:#f5f5f580;font-size:.9rem;background:linear-gradient(to bottom,transparent,rgba(0,0,0,.4));-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-top:1px solid rgba(255,255,255,.05);position:relative}.footer:before{content:"";position:absolute;top:0;left:50%;transform:translate(-50%);width:100px;height:1px;background:linear-gradient(90deg,transparent,rgba(118,150,86,.3),transparent)}.footer p{margin:0;opacity:.8;transition:opacity .3s ease}.footer p:hover{opacity:1}@media (max-width: 768px){.container{padding:0}.logo{gap:10px}.logo-top{flex-direction:column;gap:10px}.logo img{height:60px}.mcb-title{font-size:3rem}.logo h1{font-size:2.5rem}.settings-grid{grid-template-columns:1fr;gap:20px}.hero-stat-header{flex-direction:column;gap:15px;text-align:center}.input-section,.progress-section,.results-section{padding:25px}.occurrence-game-meta{flex-direction:column;gap:6px}.occurrence-game-info{font-size:.85rem;line-height:1.3}.game-link-small{width:100%;justify-content:center;padding:8px 12px}}@media (max-width: 480px){.logo-top{gap:8px}.logo img{height:50px}.mcb-title{font-size:2.5rem}.logo h1{font-size:2rem}.input-section,.progress-section,.results-section,.settings-panel{padding:20px}}@media (max-width: 1200px){.severity-tooltip .tooltip-content{left:50%;right:auto;transform:translate(-50%)}.severity-tooltip .tooltip-content:after{right:50%;left:50%;transform:translate(-50%)}}@media (max-width: 600px){.severity-tooltip .tooltip-content{width:calc(100vw - 32px);max-width:none;left:50%;transform:translate(-50%)}.severity-tooltip .tooltip-content:after{display:none}}.games-by-blunders-list{gap:20px}.game-blunder-item{padding:24px}.games-by-blunders-content{overflow-y:auto;max-height:650px}.game-blunder-item{overflow:visible}.games-by-blunders-list{max-height:none}@media (max-width: 768px){.games-by-blunders-content{max-height:60vh}}@media (max-width: 768px){.settings-grid{gap:16px}.setting-group{padding:16px}.settings-panel.expanded{padding:24px}}.developer-mode{margin-top:2rem;border-top:2px solid var(--accent-secondary);padding-top:1rem}.developer-toggle{text-align:center;margin-bottom:1rem}.dev-toggle-btn{background:linear-gradient(135deg,var(--bg-secondary),var(--bg-tertiary));border:2px solid var(--accent-secondary);color:var(--text-primary);padding:.75rem 1.5rem;border-radius:8px;font-family:Sofia Sans,sans-serif;font-weight:600;font-size:.9rem;cursor:pointer;transition:all .3s ease;box-shadow:var(--shadow-light)}.dev-toggle-btn:hover{background:linear-gradient(135deg,var(--bg-tertiary),var(--accent-secondary));transform:translateY(-2px);box-shadow:var(--shadow-medium)}.dev-toggle-btn.active{background:linear-gradient(135deg,var(--accent-secondary),var(--chess-green));border-color:var(--chess-green);color:var(--bg-primary)}.dev-panel{background:var(--bg-secondary);border:1px solid var(--accent-secondary);border-radius:12px;overflow:hidden;box-shadow:var(--shadow-light);transition:all .3s ease}.dev-panel.expanded{max-height:none}.dev-panel.collapsed{max-height:60px}.dev-header{background:linear-gradient(135deg,var(--bg-tertiary),var(--accent-secondary));padding:1rem 1.5rem;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--accent-secondary)}.dev-header h3{color:var(--text-primary);font-family:Playfair Display,serif;font-size:1.1rem;font-weight:600;margin:0}.dev-content{padding:1.5rem;transition:all .3s ease}.dev-content.collapsed{display:none}.pgn-textarea{width:100%;background:var(--bg-primary);border:1px solid var(--accent-secondary);border-radius:8px;color:var(--text-primary);font-family:Sofia Sans,sans-serif;font-size:.9rem;padding:1rem;resize:vertical;min-height:120px;transition:all .3s ease}.pgn-textarea:focus{outline:none;border-color:var(--chess-green);box-shadow:0 0 0 2px #76965633}.pgn-textarea::placeholder{color:var(--text-muted)}.dev-settings{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin:1rem 0}.dev-analyze-btn{background:linear-gradient(135deg,var(--chess-green),var(--accent-secondary));border:none;color:var(--bg-primary);padding:1rem 2rem;border-radius:8px;font-family:Sofia Sans,sans-serif;font-weight:600;font-size:1rem;cursor:pointer;transition:all .3s ease;box-shadow:var(--shadow-light);width:100%;margin-top:1rem}.dev-analyze-btn:hover:not(:disabled){background:linear-gradient(135deg,var(--accent-secondary),var(--chess-green));transform:translateY(-2px);box-shadow:var(--shadow-medium)}.dev-analyze-btn:disabled{background:var(--bg-tertiary);color:var(--text-muted);cursor:not-allowed;transform:none;box-shadow:none}@media (max-width: 768px){.dev-settings{grid-template-columns:1fr}.dev-content{padding:1rem}.dev-header{padding:.75rem 1rem}.dev-header h3{font-size:1rem}}.analyze-btn{height:48px;min-height:48px;font-size:20px;font-weight:700;padding:0 32px;margin:16px 0;display:inline-block;line-height:48px;box-sizing:border-box}.settings-panel{min-height:48px;padding-top:0;padding-bottom:0;margin:16px 0;display:block;box-sizing:border-box}.settings-header{min-height:48px;height:48px;padding-top:0;padding-bottom:0;display:flex;align-items:center;box-sizing:border-box;justify-content:center;position:relative}.settings-header .toggle-icon{position:absolute;right:16px;top:50%;transform:translateY(-50%)}#username{height:48px;min-height:48px;font-size:18.4px;font-weight:400;padding:0 16px;margin:16px 0;display:inline-block;box-sizing:border-box;background-color:#465a7e66;color:#fff}.input-group{margin:0;padding:0}.settings-panel.collapsed{height:48px;min-height:48px;max-height:48px;overflow:hidden;padding-top:0;padding-bottom:0;margin:16px 0;box-sizing:border-box}.settings-content.collapsed{display:none}.settings-header h3,.analyze-btn .btn-text{font-family:Sofia Sans,sans-serif!important;font-size:1.05rem!important;font-weight:600!important;color:#fff!important;letter-spacing:.5px!important;text-transform:uppercase!important;opacity:.9!important}.settings-panel.expanded{padding-top:0!important}.settings-content{margin-top:0!important;padding-top:0!important}.settings-summary{font-family:Sofia Sans,sans-serif;margin-top:15px;margin-bottom:15px;padding:15px;background-color:var(--background-secondary);border-radius:8px;font-size:1.2em;color:var(--text-primary);line-height:1.8;text-align:left;border:1px solid var(--border-color);letter-spacing:.5px}.highlight,.highlight-missing{background-color:#ffffff1f;padding:2px 6px;border-radius:4px;font-weight:600;cursor:pointer;transition:all .2s ease-in-out}.highlight:hover,.highlight-missing:hover{background-color:#7696564d;box-shadow:0 0 10px #76965680;color:#fff}.highlight-missing{background-color:#ff000026;color:#c00;border-bottom:2px solid #c00}.highlight-missing:hover{background-color:#ff00004d;color:#fff}