.language-selector.floating{position:fixed;z-index:1000}.language-selector.floating.bottom-left{bottom:2rem;left:2rem}.language-selector.floating.top-right{top:2rem;right:2rem}.language-toggle{width:48px;height:48px;border-radius:50%;border:2px solid var(--border);background:var(--bg-primary);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.5rem;transition:all .2s ease;box-shadow:var(--shadow)}.language-toggle:hover{border-color:var(--border-hover);transform:translateY(-2px);box-shadow:var(--shadow-hover)}.language-backdrop{position:fixed;top:0;left:0;right:0;bottom:0;z-index:999}.language-dropdown{position:absolute;bottom:100%;left:0;margin-bottom:.5rem;background:var(--bg-primary);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow-hover);overflow:hidden;min-width:120px;animation:slideUp .2s ease;z-index:1002}.language-selector.floating.top-right .language-dropdown{bottom:auto;top:100%;left:auto;right:0;margin-bottom:0;margin-top:.5rem;animation:slideDown .2s ease}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.language-option{width:100%;padding:.75rem 1rem;border:none;background:transparent;cursor:pointer;display:flex;align-items:center;gap:.5rem;transition:background-color .2s ease;color:var(--text-primary);z-index:1001;position:relative}.language-option:hover{background:var(--bg-secondary)}.language-option.active{background:var(--bg-secondary);font-weight:600}.language-name{font-size:.9rem}.language-selector.inline{display:flex;flex-direction:column;gap:1rem}.language-label{font-weight:600;color:var(--text-primary);font-size:1rem}.language-selector.inline .language-options{display:flex;gap:.5rem;flex-wrap:wrap}.language-selector.inline .language-option{padding:.75rem 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.75rem}}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#66d5e6,#256abc,#f4b82d);padding:2rem;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.login-container{background:#fff;border-radius:16px;box-shadow:0 20px 40px #0000001a;overflow:hidden;max-width:400px;width:100%;animation:slideUp .6s ease-out}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.login-header{background:linear-gradient(135deg,#66d5e6,#256abc);color:#fff;padding:3rem 2rem 2rem;text-align:center}.login-logo{width:80px;height:80px;border-radius:12px;margin-bottom:1rem;object-fit:contain;border:3px solid rgba(255,255,255,.3);background:#fff;padding:.5rem}.login-title{margin:0 0 .5rem;font-size:2rem;font-weight:700;letter-spacing:-.02em}.login-subtitle{margin:0;font-size:.9rem;opacity:.9;font-weight:400}.login-form{padding:2rem}.login-form h2{margin:0 0 .75rem;font-size:1.25rem;font-weight:600;color:#2c3e50;text-align:center}.login-description{margin:0 0 1.5rem;font-size:.875rem;color:#6b7280;text-align:center;line-height:1.5}.error-message{background:#fef2f2;border:1px solid #fecaca;color:#dc2626;padding:.75rem;border-radius:8px;margin-bottom:1.5rem;font-size:.875rem;text-align:center}.login-buttons{display:flex;flex-direction:column;gap:.75rem}.login-btn{display:flex;align-items:center;justify-content:center;gap:.75rem;padding:.875rem 1rem;border:2px solid transparent;border-radius:12px;background:#fff;color:#2c3e50;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s ease;text-decoration:none;width:100%;box-shadow:0 2px 8px #0000001a}.login-btn:hover{background:#f9fafb;border-color:#66d5e6;transform:translateY(-2px);box-shadow:0 6px 16px #66d5e64d}.login-btn:active{transform:translateY(0);box-shadow:0 2px 4px #0000001a}.login-btn:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}.google-btn:hover{background:linear-gradient(135deg,#66d5e633,#256abc26);border-color:#66d5e6;box-shadow:0 6px 16px #66d5e666}.microsoft-btn{background:#fff;color:#2c3e50;border:2px solid transparent}.microsoft-btn:hover{background:linear-gradient(135deg,#66d5e633,#f4b82d1a);border-color:#00a4ef;box-shadow:0 6px 16px #00a4ef4d}.github-btn{background:#fff;color:#2c3e50;border:2px solid transparent}.github-btn:hover{background:#24292e;color:#fff;transform:translateY(-2px);box-shadow:0 6px 16px #24292e4d}.provider-icon{width:18px;height:18px;flex-shrink:0}.login-footer{margin-top:2rem;padding-top:1.5rem;border-top:1px solid #e5e7eb;text-align:center}.login-footer p{margin:0;font-size:.75rem;color:#6b7280;line-height:1.5}.link{color:#256abc;text-decoration:none;font-weight:500}.link:hover{color:#66d5e6;text-decoration:underline}.loading{text-align:center;padding:4rem 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.4rem;gap:.4rem}.logo-container{gap:.3rem}.logo-image{max-height:24px}.logo-text{font-size:.9rem}.header-controls{gap:.4rem}.mobile-menu-toggle{width:28px;height:28px;padding:.3rem}.hamburger-line{width:12px;height:1.5px}.avatar{width:26px;height:26px;font-size:.7rem}.theme-toggle{width:28px;height:28px}.theme-toggle-slider{font-size:.85rem}}.sidebar-backdrop{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;z-index:999;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.sidebar{position:fixed;top:0;left:0;height:100vh;width:320px;background:var(--bg-primary);border-right:1px solid var(--border);box-shadow:var(--shadow-hover);transform:translate(-100%);transition:transform .3s 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#e0e0e0}.tools-panel-overlay{position:absolute;top:100%;left:0;right:0;z-index:1000}.tools-grid{display:flex;gap:1rem;flex-wrap:wrap}.tool-item{display:flex;align-items:center;gap:.5rem}.tool-item input[type=checkbox]{margin:0}.tool-info{display:flex;flex-direction:column;gap:.25rem}.tool-name{font-weight:500;font-size:.875rem}.tool-description{font-size:.75rem;color:#666}.chat-messages{flex:1;overflow-y:auto;overflow-x:hidden;padding:1rem;background:var(--bg-primary);min-height:0;max-height:70vh;transition:max-height .3s ease;-webkit-overflow-scrolling:touch}.chat-messages.empty{max-height:35vh}.message{display:flex;gap:.75rem;margin-bottom:1rem;align-items:flex-start}.message.user{justify-content:flex-end;padding-left:25%}.message.assistant{justify-content:flex-start;padding-right:25%}.message-avatar{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.875rem;font-weight:700;color:#fff;flex-shrink:0}.avatar-user{background:linear-gradient(135deg,var(--orange-start),var(--orange-end))}.avatar-assistant{background:linear-gradient(135deg,var(--turquoise-start),var(--turquoise-end))}.message-content{max-width:100%;padding:1rem 1.25rem;border-radius:1.25rem;position:relative;box-shadow:0 2px 8px #0000001a}.content-text{line-height:1.6;word-wrap:break-word}.content-text h1,.content-text h2,.content-text h3{margin:.8em 0 .4em;color:#333;font-weight:600}.content-text h1{font-size:1.5em;border-bottom:2px solid #eee;padding-bottom:.3em}.content-text h2{font-size:1.3em;border-bottom:1px solid #eee;padding-bottom:.2em}.content-text h3{font-size:1.1em}.content-text strong{font-weight:700;color:#2c3e50}.content-text em{font-style:italic;color:#555}.content-text code{background:#f4f4f4;padding:2px 6px;border-radius:4px;font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:.9em;color:#d63384;border:1px solid #e9ecef}.content-text a{color:#4a90e2;text-decoration:none;border-bottom:1px solid transparent;transition:all .2s ease}.content-text a:hover{text-decoration:none;border-bottom:1px solid #4A90E2;background:#4a90e21a;padding:0 2px;border-radius:2px}.content-text p{margin:.5em 0;line-height:1.6}.content-text pre{background:#f8f8f8;border:1px solid #ddd;border-radius:6px;padding:12px;overflow-x:auto;margin:.5em 0}.content-text pre code{background:none;padding:0;border:none}.content-text blockquote{border-left:4px solid #ddd;margin:.5em 0;padding-left:1em;color:#666;font-style:italic}.content-text ul,.content-text ol{margin:.5em 0;padding-left:2em}.content-text li{margin:.2em 0}.message.user .message-content{background:linear-gradient(135deg,var(--orange-start),var(--orange-end));background:#f4b82de6;color:#2c3e50;border:none}.message.assistant .message-content{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border)}[data-theme=dark] .message.user .message-content{background:#f4b82dcc;color:#1a1a1a}[data-theme=dark] .message.assistant .message-content{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border)}[data-theme=dark] .content-text h1,[data-theme=dark] .content-text h2,[data-theme=dark] .content-text h3{color:var(--text-primary)}[data-theme=dark] .content-text h1{border-bottom:2px solid var(--border)}[data-theme=dark] .content-text h2{border-bottom:1px solid var(--border)}[data-theme=dark] .content-text strong{color:#f4b82d}[data-theme=dark] .content-text em{color:#ccc}[data-theme=dark] .content-text code{background:#ffffff1a;color:#e6e6e6}[data-theme=dark] .content-text pre{background:#ffffff0d;border:1px solid var(--border)}[data-theme=dark] .content-text a{color:#66b3ff!important}[data-theme=dark] .content-text a:hover{color:#80c7ff!important}[data-theme=dark] .content-text blockquote{border-left:4px solid #f4b82d;background:#f4b82d1a}[data-theme=dark] .content-text ul li::marker{color:var(--text-primary)}[data-theme=dark] .content-text ol li::marker{color:var(--text-primary)}.message-tools{margin-top:.5rem;padding-top:.5rem;border-top:1px solid rgba(255,255,255,.2);font-size:.75rem}.message.assistant .message-tools{border-top-color:#0000001a}[data-theme=dark] .message-tools{border-top-color:#fff3;color:var(--text-primary)}[data-theme=dark] .message.assistant .message-tools{border-top-color:#ffffff26}.tools-used{display:flex;gap:.25rem;flex-wrap:wrap;margin-top:.25rem}.tool-chip{padding:.125rem .5rem;background:#fff3;border-radius:12px;font-size:.625rem;color:var(--text-primary)}.message.assistant .tool-chip{background:#0000001a;color:var(--text-primary)}[data-theme=dark] .tool-chip{background:#4a90e24d;color:#fff;border:1px solid rgba(74,144,226,.5)}[data-theme=dark] .message.assistant .tool-chip{background:#4a90e240;color:#fff;border:1px solid rgba(74,144,226,.4)}.message-timestamp{font-size:.625rem;opacity:.7;margin-top:.5rem}.chat-input{padding:1rem 2rem;border-top:1px solid var(--border);background:var(--bg-primary)}.input-container{display:flex;gap:.5rem}.message-input{flex:1;padding:.75rem;border:1px solid var(--border);border-radius:20px;resize:none;outline:none;font-family:inherit;background:var(--bg-primary);color:var(--text-primary);transition:all .2s ease}.message-input:focus{border-color:var(--orange-start);box-shadow:0 0 0 3px #f4b82d1a}.send-button{padding:.75rem 1.5rem;background:linear-gradient(135deg,var(--orange-start),var(--orange-end));color:#fff;border:none;border-radius:20px;cursor:pointer;font-weight:500;transition:all .2s ease;box-shadow:var(--shadow)}.send-button:hover:not(:disabled){transform:translateY(-1px);box-shadow:var(--shadow-hover)}.send-button:disabled{background:#ccc;cursor:not-allowed}.chat-messages .loading-container{background:linear-gradient(135deg,#f5f7fa,#c3cfe2);border-radius:12px;margin:8px 16px;animation:slideInUp .3s ease-out}@keyframes slideInUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.loading-container.thinking{background:linear-gradient(135deg,#e3f2fd,#bbdefb)}.loading-container.searching{background:linear-gradient(135deg,#e8f5e8,#c8e6c9)}.loading-container.processing{background:linear-gradient(135deg,#fff8e1,#ffecb3)}.tool-status{font-size:.85rem;font-weight:500;padding:6px 12px;border-radius:16px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.3);box-shadow:0 2px 8px #0000001a;transition:all .2s ease}.loading-container.thinking .tool-status{background:#ffffffe6;color:#1976d2;border-color:#1976d24d}.loading-container.searching .tool-status{background:#ffffffe6;color:#388e3c;border-color:#388e3c4d}.loading-container.processing .tool-status{background:#ffffffe6;color:#f57c00;border-color:#f57c004d}@media (max-width: 768px){.chat-container{min-height:55vh}.chat-messages{max-height:75vh}.chat-messages.empty{max-height:30vh}.chat-messages .loading-container{margin:6px 8px}.tool-status{font-size:.8rem;padding:4px 8px}.chat-header{padding:.5rem .75rem}.chat-input{padding:.75rem 1rem 1rem}.chat-controls>div{font-size:.8rem}.chat-controls .select{min-width:auto}}@media (max-width: 480px){.chat-container{min-height:50vh}.chat-messages{max-height:75vh}.chat-messages.empty{max-height:25vh}.chat-header{padding:.4rem .6rem}.chat-header h1{font-size:1rem!important}.chat-input{padding:.75rem .75rem 1.5rem;padding-bottom:env(safe-area-inset-bottom,1.5rem)}.chat-controls{font-size:.75rem}.chat-controls label{font-size:.7rem}.status-badge{font-size:.65rem!important;padding:.2rem .4rem!important}.controls-toggle{font-size:.75rem!important;padding:.3rem .6rem!important}.chat-controls.collapsed+*{margin-top:0}.input-container{gap:.4rem}.message-input{padding:.6rem;font-size:1rem}.send-button{padding:.6rem 1rem;font-size:.9rem}.clear-chat-button{padding:.4rem .6rem!important;font-size:1rem!important}.chat-controls{gap:.5rem;flex-wrap:wrap}.select{padding:.4rem;font-size:.85rem}.status-badge{font-size:.75rem;padding:.25rem .5rem}.model-info-tooltip{font-size:.85rem;max-width:90vw}.chat-messages{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}}.error-alert{margin:1rem;padding:1rem;background:#ffebee;border:1px solid #ffcdd2;border-radius:4px;color:#c62828}.stop-button{padding:.75rem 1.5rem;background:linear-gradient(135deg,#e74c3c,#c0392b);color:#fff;border:none;border-radius:8px;cursor:pointer;font-weight:700;transition:all .2s ease;flex-shrink:0}.stop-button:hover{transform:translateY(-1px);box-shadow:0 4px 12px #e74c3c4d;background:linear-gradient(135deg,#c0392b,#a93226)}.loading{display:inline-block;width:16px;height:16px;border:2px solid #ffffff;border-radius:50%;border-top-color:transparent;animation:spin 1s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}:root{--orange-start: #F4B82D;--orange-end: #D94524;--turquoise-start: #66D5E6;--turquoise-end: #256ABC;--bg-primary-light: #ffffff;--bg-secondary-light: #f8f9fa;--bg-tertiary-light: #e9ecef;--text-primary-light: #212529;--text-secondary-light: #6c757d;--border-light: #dee2e6;--border-hover-light: #adb5bd;--shadow-light: 0 2px 8px rgba(0, 0, 0, .1);--shadow-hover-light: 0 4px 16px rgba(0, 0, 0, .15);--bg-primary-dark: #1a1a1a;--bg-secondary-dark: #2d2d2d;--bg-tertiary-dark: #404040;--text-primary-dark: #ffffff;--text-secondary-dark: #b0b0b0;--border-dark: #404040;--border-hover-dark: #606060;--shadow-dark: 0 2px 8px rgba(0, 0, 0, .3);--shadow-hover-dark: 0 4px 16px rgba(0, 0, 0, .4)}[data-theme=light]{--bg-primary: var(--bg-primary-light);--bg-secondary: var(--bg-secondary-light);--bg-tertiary: var(--bg-tertiary-light);--text-primary: var(--text-primary-light);--text-secondary: var(--text-secondary-light);--border: var(--border-light);--border-hover: var(--border-hover-light);--shadow: var(--shadow-light);--shadow-hover: var(--shadow-hover-light)}[data-theme=dark]{--bg-primary: var(--bg-primary-dark);--bg-secondary: var(--bg-secondary-dark);--bg-tertiary: var(--bg-tertiary-dark);--text-primary: var(--text-primary-dark);--text-secondary: var(--text-secondary-dark);--border: var(--border-dark);--border-hover: var(--border-hover-dark);--shadow: var(--shadow-dark);--shadow-hover: var(--shadow-hover-dark)}:root{--primary-color: #0066ff;--primary-dark: #0056b3;--success-color: #28a745;--success-bg: #d4edda;--error-color: #dc3545;--error-bg: #fee;--warning-color: #ffc107;--warning-bg: #fff3cd;--info-bg: #e7f3ff;--bg-color: var(--bg-primary);--card-bg: var(--bg-primary);--secondary-bg: var(--bg-secondary);--inactive-bg: var(--bg-tertiary);--code-bg: var(--bg-secondary);--hover-bg: var(--bg-secondary);--text-color: var(--text-primary);--border-color: var(--border);--box-shadow: var(--shadow)}[data-theme=dark]{--code-bg: #2d2d2d}.gradient-orange{background:linear-gradient(135deg,var(--orange-start) 0%,var(--orange-end) 100%)}.gradient-turquoise{background:linear-gradient(135deg,var(--turquoise-start) 0%,var(--turquoise-end) 100%)}.text-gradient-orange{background:linear-gradient(135deg,var(--orange-start) 0%,var(--orange-end) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.text-gradient-turquoise{background:linear-gradient(135deg,var(--turquoise-start) 0%,var(--turquoise-end) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.logo-container{display:flex;align-items:center;gap:.75rem}.logo-image{width:60px;height:60px;border-radius:8px;object-fit:contain}.logo-icon{width:56px;height:56px;border-radius:12px;background:linear-gradient(135deg,var(--orange-start) 0%,var(--orange-end) 100%);display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;font-size:1.4rem}.logo-text{font-size:1.75rem;font-weight:700;color:var(--text-primary);margin:0}.btn-primary{background:linear-gradient(135deg,var(--orange-start) 0%,var(--orange-end) 100%);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;font-weight:500;cursor:pointer;transition:all .2s ease;box-shadow:var(--shadow)}.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-hover)}.btn-secondary{background:linear-gradient(135deg,var(--turquoise-start) 0%,var(--turquoise-end) 100%);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;font-weight:500;cursor:pointer;transition:all .2s ease;box-shadow:var(--shadow)}.btn-secondary:hover{transform:translateY(-1px);box-shadow:var(--shadow-hover)}.btn-outline{background:transparent;color:var(--text-primary);border:2px solid var(--border);padding:.75rem 1.5rem;border-radius:8px;font-weight:500;cursor:pointer;transition:all .2s ease}.btn-outline:hover{border-color:var(--border-hover);background:var(--bg-secondary);transform:translateY(-1px)}.theme-toggle{background:var(--bg-secondary);border:2px solid var(--border);border-radius:20px;padding:4px;cursor:pointer;transition:all .2s ease;width:60px;height:32px;position:relative}.theme-toggle-slider{width:20px;height:20px;background:linear-gradient(135deg,var(--orange-start) 0%,var(--orange-end) 100%);border-radius:50%;transition:transform .2s ease;display:flex;align-items:center;justify-content:center;color:#fff;font-size:10px}[data-theme=dark] .theme-toggle-slider{transform:translate(28px);background:linear-gradient(135deg,var(--turquoise-start) 0%,var(--turquoise-end) 100%)}html{font-size:16px;line-height:1.6}*{box-sizing:border-box}body{margin:0;padding:0;min-height:100vh}html{scroll-behavior:smooth}*:focus{outline:2px solid var(--orange-start, #F4B82D);outline-offset:2px}.js-focus-visible :focus:not([data-focus-visible-added]){outline:none}@media print{*{background:transparent!important;color:#000!important;box-shadow:none!important;text-shadow:none!important}a,a:visited{text-decoration:underline}.no-print{display:none!important}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.visually-hidden{position:absolute!important;clip:rect(1px 1px 1px 1px);clip:rect(1px,1px,1px,1px);padding:0!important;border:0!important;height:1px!important;width:1px!important;overflow:hidden}