:root{--safe-area-inset-top: env(safe-area-inset-top, 0px);--safe-area-inset-bottom: env(safe-area-inset-bottom, 0px);--safe-area-inset-left: env(safe-area-inset-left, 0px);--safe-area-inset-right: env(safe-area-inset-right, 0px);--breakpoint-mobile: 480px;--breakpoint-tablet: 768px;--breakpoint-desktop: 1024px;--breakpoint-large: 1440px;--theme-transition-duration: .3s;--theme-transition-easing: ease-in-out;--color-primary-bg: #0E0B16;--color-secondary-bg: #1F1B2E;--color-accent-purple: #6A1B9A;--color-accent-purple-light: #A239CA;--color-accent-purple-accessible: #BB86FC;--color-text-primary: #E7DFDD;--color-text-secondary: #C4BABD;--color-text-muted: #8A7F82;--color-primary-bg-light: #F8F9FA;--color-secondary-bg-light: #FFFFFF;--color-accent-purple-light-theme: #4A148C;--color-accent-purple-light-accessible: #6A1B9A;--color-text-primary-light: #1A1A1A;--color-text-secondary-light: #4A4A4A;--color-text-muted-light: #6B6B6B;--color-user-message-bg: var(--color-accent-purple);--color-nyx-message-bg: var(--color-secondary-bg);--color-message-border: rgba(167, 57, 202, .3);--color-user-message-bg-light: var(--color-accent-purple-light-theme);--color-nyx-message-bg-light: var(--color-secondary-bg-light);--color-message-border-light: rgba(106, 27, 154, .3);--mystical-glow-primary: rgba(167, 57, 202, .3);--mystical-glow-secondary: rgba(106, 27, 154, .2);--mystical-gradient-start: rgba(106, 27, 154, .1);--mystical-gradient-end: rgba(162, 57, 202, .1);--mystical-gradient-bg: rgba(31, 27, 46, .8);--mystical-glow-primary-light: rgba(106, 27, 154, .4);--mystical-glow-secondary-light: rgba(74, 20, 140, .3);--mystical-gradient-start-light: rgba(106, 27, 154, .08);--mystical-gradient-end-light: rgba(74, 20, 140, .08);--mystical-gradient-bg-light: rgba(255, 255, 255, .9);--color-success: #4CAF50;--color-error: #F44336;--color-warning: #FF9800;--color-info: var(--color-accent-purple-light);--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--space-3xl: 4rem;--font-family-primary: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;--font-family-mono: "Courier New", monospace;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-md: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height-tight: 1.25;--line-height-normal: 1.5;--line-height-relaxed: 1.75;--radius-sm: .25rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-mystical: 0 0 20px rgba(167, 57, 202, .3);--transition-fast: .15s ease;--transition-normal: .3s ease;--transition-slow: .5s ease;--z-base: 0;--z-above: 10;--z-modal: 100;--z-overlay: 1000;--z-max: 9999;--max-width-chat: 800px;--sidebar-width: 280px;--header-height: 60px;--input-height: 60px;--animation-typing: typing 1.5s infinite;--animation-fade-in: fadeIn .3s ease-in;--animation-slide-up: slideUp .3s ease-out}@keyframes typing{0%,60%,to{transform:initial}30%{transform:translateY(-10px)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}@media (max-width: 480px){:root{--space-md: .5rem;--space-lg: .75rem;--space-xl: 1rem;--font-size-md: .875rem;--font-size-lg: 1rem}}@media (max-width: 768px){:root{--space-md: .75rem;--space-lg: 1rem;--space-xl: 1.5rem;--font-size-md: .875rem;--font-size-lg: 1rem}}@media (min-width: 769px) and (max-width: 1024px){:root{--max-width-chat: 900px;--space-lg: 1.25rem;--space-xl: 2rem}}@media (min-width: 1025px){:root{--max-width-chat: 1000px;--space-2xl: 4rem;--space-3xl: 5rem}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;height:100%}body{font-family:var(--font-family-primary);font-size:var(--font-size-md);font-weight:var(--font-weight-normal);line-height:var(--line-height-normal);color:var(--color-text-primary);background-color:var(--color-primary-bg);background-image:radial-gradient(circle at 20% 80%,var(--mystical-gradient-start) 0%,transparent 50%),radial-gradient(circle at 80% 20%,var(--mystical-gradient-end) 0%,transparent 50%),radial-gradient(circle at 40% 40%,var(--mystical-gradient-bg) 0%,transparent 50%);min-height:100vh;min-height:100dvh;height:100%;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overscroll-behavior:none;padding-top:var(--safe-area-inset-top);padding-bottom:var(--safe-area-inset-bottom);padding-left:var(--safe-area-inset-left);padding-right:var(--safe-area-inset-right)}*:focus{outline:2px solid var(--color-accent-purple-accessible);outline-offset:3px}*:focus:not(:focus-visible){outline:none}*:focus-visible{outline:2px solid var(--color-accent-purple-accessible);outline-offset:3px}[data-theme=light]{--color-primary-bg: var(--color-primary-bg-light);--color-secondary-bg: var(--color-secondary-bg-light);--color-text-primary: var(--color-text-primary-light);--color-text-secondary: var(--color-text-secondary-light);--color-text-muted: var(--color-text-muted-light);--color-user-message-bg: var(--color-user-message-bg-light);--color-nyx-message-bg: var(--color-nyx-message-bg-light);--color-message-border: var(--color-message-border-light);--mystical-glow-primary: var(--mystical-glow-primary-light);--mystical-glow-secondary: var(--mystical-glow-secondary-light);--mystical-gradient-start: var(--mystical-gradient-start-light);--mystical-gradient-end: var(--mystical-gradient-end-light);--mystical-gradient-bg: var(--mystical-gradient-bg-light);--color-accent-purple-accessible: var(--color-accent-purple-light-accessible)}*{transition:background-color var(--theme-transition-duration) var(--theme-transition-easing),color var(--theme-transition-duration) var(--theme-transition-easing),border-color var(--theme-transition-duration) var(--theme-transition-easing),box-shadow var(--theme-transition-duration) var(--theme-transition-easing)}h1,h2,h3,h4,h5,h6{font-weight:var(--font-weight-semibold);line-height:var(--line-height-tight);color:var(--color-text-primary)}h1{font-size:var(--font-size-3xl)}h2{font-size:var(--font-size-2xl)}h3{font-size:var(--font-size-xl)}h4{font-size:var(--font-size-lg)}h5{font-size:var(--font-size-md)}h6{font-size:var(--font-size-sm)}p{margin-bottom:var(--space-md)}a{color:var(--color-accent-purple-light);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-accent-purple);text-decoration:underline}button{font-family:inherit;font-size:inherit;line-height:inherit;border:none;background:none;cursor:pointer;transition:all var(--transition-fast)}button:disabled{cursor:not-allowed;opacity:.6}input,textarea{font-family:inherit;font-size:inherit;line-height:inherit;border:none;background:transparent;color:inherit}input::placeholder,textarea::placeholder{color:var(--color-text-muted)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-secondary-bg);border-radius:var(--radius-sm)}::-webkit-scrollbar-thumb{background:var(--color-accent-purple);border-radius:var(--radius-sm);transition:background var(--transition-fast)}::-webkit-scrollbar-thumb:hover{background:var(--color-accent-purple-light)}::selection{background-color:var(--color-accent-purple);color:var(--color-text-primary)}::-moz-selection{background-color:var(--color-accent-purple);color:var(--color-text-primary)}.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}.container{max-width:var(--max-width-chat);margin:0 auto;padding:0 var(--space-md)}.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.animate-fade-in{animation:var(--animation-fade-in)}.animate-slide-up{animation:var(--animation-slide-up)}.spinner{display:inline-block;width:20px;height:20px;border:2px solid var(--color-text-muted);border-radius:50%;border-top-color:var(--color-accent-purple-light);animation:spin 1s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}@media (prefers-contrast: high){:root{--color-text-primary: #FFFFFF;--color-text-secondary: #F0F0F0;--color-accent-purple: #E1BEE7;--color-accent-purple-light: #F3E5F5;--color-accent-purple-accessible: #E1BEE7;--color-message-border: #FFFFFF;--mystical-glow-primary: rgba(225, 190, 231, .8);--mystical-glow-secondary: rgba(243, 229, 245, .6)}[data-theme=light]{--color-text-primary: #000000;--color-text-secondary: #1A1A1A;--color-accent-purple: #4A148C;--color-accent-purple-accessible: #4A148C;--color-message-border: #000000}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}html{scroll-behavior:auto}}@media print{body{background:#fff;color:#000}.no-print{display:none}}.message-bubble{display:flex;align-items:flex-end;gap:var(--space-sm);margin-bottom:var(--space-md);animation:var(--animation-slide-up)}.message-bubble--user{flex-direction:row-reverse;justify-content:flex-start}.message-bubble--nyx{flex-direction:row;justify-content:flex-start}.message-bubble__content{max-width:70%;min-width:100px;position:relative}.message-bubble__text{padding:var(--space-md) var(--space-lg);border-radius:var(--radius-lg);font-size:var(--font-size-md);line-height:var(--line-height-normal);word-wrap:break-word;position:relative;transition:all var(--transition-fast)}.message-bubble--user .message-bubble__text{background:var(--gradient-purple-mystical);color:var(--color-text-primary);border-bottom-right-radius:var(--radius-sm);box-shadow:var(--shadow-md);text-shadow:0 1px 2px rgba(0,0,0,.1)}.message-bubble--nyx .message-bubble__text{background:var(--color-nyx-message-bg);color:var(--color-text-primary);border:1px solid var(--color-message-border);border-bottom-left-radius:var(--radius-sm);box-shadow:var(--shadow-mystical);background-image:var(--gradient-blue-mystical);background-blend-mode:overlay}.message-bubble__timestamp{font-size:var(--font-size-xs);color:var(--color-text-muted);margin-top:var(--space-xs);text-align:right;opacity:.7;transition:opacity var(--transition-fast)}.message-bubble--user .message-bubble__timestamp{text-align:right}.message-bubble--nyx .message-bubble__timestamp{text-align:left}.message-bubble:hover .message-bubble__timestamp{opacity:1}.message-bubble__status{display:flex;align-items:center;justify-content:center;width:20px;height:20px;margin-top:var(--space-xs)}.message-bubble__status--error{color:var(--color-error);font-size:var(--font-size-sm)}.message-bubble__avatar{width:32px;height:32px;border-radius:var(--radius-full);background:var(--gradient-purple-mystical);display:flex;align-items:center;justify-content:center;font-size:var(--font-size-lg);flex-shrink:0;box-shadow:var(--shadow-mystical);border:2px solid var(--color-message-border)}.message-bubble--sending .message-bubble__text{opacity:.7}.message-bubble--error .message-bubble__text{background-color:var(--color-error);opacity:.9}@media (max-width: 768px){.message-bubble__content{max-width:85%}.message-bubble__text{padding:var(--space-sm) var(--space-md);font-size:var(--font-size-sm)}.message-bubble__avatar{width:28px;height:28px;font-size:var(--font-size-md)}}@media (prefers-contrast: high){.message-bubble--user .message-bubble__text{border:2px solid var(--color-text-primary)}.message-bubble--nyx .message-bubble__text{border:2px solid var(--color-accent-purple-light)}}@keyframes messageAppear{0%{opacity:0;transform:translateY(20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.message-bubble{animation:messageAppear .3s ease-out}.typing-indicator{display:flex;align-items:flex-end;margin-bottom:var(--space-md);animation:var(--animation-fade-in)}.typing-indicator__container{display:flex;align-items:flex-end;gap:var(--space-sm)}.typing-indicator__avatar{width:32px;height:32px;border-radius:var(--radius-full);background:linear-gradient(135deg,var(--color-accent-purple),var(--color-accent-purple-light));display:flex;align-items:center;justify-content:center;font-size:var(--font-size-lg);flex-shrink:0;box-shadow:var(--shadow-mystical);border:2px solid var(--color-message-border);animation:pulse 2s infinite}.typing-indicator__content{background-color:var(--color-nyx-message-bg);border:1px solid var(--color-message-border);border-radius:var(--radius-lg);border-bottom-left-radius:var(--radius-sm);padding:var(--space-md) var(--space-lg);box-shadow:var(--shadow-mystical);min-width:80px}.typing-indicator__text{display:flex;align-items:center;height:20px}.typing-indicator__dots{display:flex;gap:var(--space-xs);align-items:center}.typing-indicator__dot{width:8px;height:8px;border-radius:var(--radius-full);background-color:var(--color-accent-purple-light);animation:typing 1.4s infinite ease-in-out;opacity:.4}.typing-indicator__dot:nth-child(1){animation-delay:0ms}.typing-indicator__dot:nth-child(2){animation-delay:.2s}.typing-indicator__dot:nth-child(3){animation-delay:.4s}.typing-indicator__label{font-size:var(--font-size-xs);color:var(--color-text-muted);margin-top:var(--space-xs);font-style:italic;opacity:.8}@keyframes typing{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-10px);opacity:1}}@keyframes pulse{0%,to{transform:scale(1);box-shadow:var(--shadow-mystical)}50%{transform:scale(1.05);box-shadow:0 0 25px #a739ca66}}.typing-indicator__content:before{content:"";position:absolute;inset:-2px;background:linear-gradient(45deg,transparent,rgba(167,57,202,.1),transparent,rgba(106,27,154,.1));border-radius:var(--radius-lg);z-index:-1;animation:mysticalGlow 3s linear infinite}@keyframes mysticalGlow{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (max-width: 768px){.typing-indicator__avatar{width:28px;height:28px;font-size:var(--font-size-md)}.typing-indicator__content{padding:var(--space-sm) var(--space-md)}.typing-indicator__dot{width:6px;height:6px}.typing-indicator__label{font-size:var(--font-size-xs)}}@media (prefers-reduced-motion: reduce){.typing-indicator__dot{animation:none;opacity:1}.typing-indicator__avatar{animation:none}.typing-indicator__content:before{animation:none}}.message-list{display:flex;flex-direction:column;height:100%;position:relative}.message-list__container{flex:1;overflow:hidden;position:relative}.message-list__scroll-container{overflow-y:auto;overflow-x:hidden;height:100%;padding:var(--space-md);scroll-behavior:smooth}.message-list__messages{display:flex;flex-direction:column;min-height:100%;padding-bottom:var(--space-lg)}.message-list__virtualized{padding:var(--space-md)}.message-item{width:100%}.message-list--empty{display:flex;align-items:center;justify-content:center;height:100%;padding:var(--space-2xl)}.message-list__empty-state{text-align:center;max-width:400px;animation:var(--animation-fade-in)}.message-list__empty-icon{font-size:var(--font-size-3xl);margin-bottom:var(--space-lg);opacity:.8}.message-list__empty-title{font-size:var(--font-size-xl);font-weight:var(--font-weight-semibold);color:var(--color-text-primary);margin-bottom:var(--space-md);background:linear-gradient(135deg,var(--color-accent-purple),var(--color-accent-purple-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.message-list__empty-description{font-size:var(--font-size-md);color:var(--color-text-secondary);line-height:var(--line-height-relaxed);margin-bottom:0}.message-list__scroll-button{position:absolute;bottom:var(--space-lg);right:var(--space-lg);background:var(--color-accent-purple);color:var(--color-text-primary);border:none;border-radius:var(--radius-full);padding:var(--space-sm) var(--space-md);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);cursor:pointer;box-shadow:var(--shadow-lg);transition:all var(--transition-fast);display:flex;align-items:center;gap:var(--space-xs);z-index:var(--z-above);animation:var(--animation-slide-up)}.message-list__scroll-button:hover{background:var(--color-accent-purple-light);transform:translateY(-2px);box-shadow:var(--shadow-mystical)}.message-list__scroll-button:active{transform:translateY(0)}.message-list__scroll-icon{font-size:var(--font-size-lg);line-height:1}.message-list__scroll-text{font-size:var(--font-size-xs);white-space:nowrap}.message-list__container:after{content:"";position:absolute;bottom:0;left:0;right:0;height:40px;background:linear-gradient(transparent,var(--color-primary-bg));pointer-events:none;opacity:0;transition:opacity var(--transition-fast)}.message-list:not(.message-list--at-bottom) .message-list__container:after{opacity:1}.message-list__scroll-container::-webkit-scrollbar{width:6px}.message-list__scroll-container::-webkit-scrollbar-track{background:transparent}.message-list__scroll-container::-webkit-scrollbar-thumb{background:var(--color-accent-purple);border-radius:var(--radius-sm);opacity:.6}.message-list__scroll-container::-webkit-scrollbar-thumb:hover{opacity:1}@media (max-width: 768px){.message-list__scroll-container{padding:var(--space-sm)}.message-list__scroll-button{bottom:var(--space-md);right:var(--space-md);padding:var(--space-xs) var(--space-sm)}.message-list__scroll-text{display:none}.message-list__empty-state{padding:var(--space-lg)}.message-list__empty-title{font-size:var(--font-size-lg)}.message-list__empty-description{font-size:var(--font-size-sm)}}@media (prefers-contrast: high){.message-list__scroll-button{border:2px solid var(--color-text-primary)}.message-list__empty-title{-webkit-text-fill-color:var(--color-text-primary);background:none}}@media (prefers-reduced-motion: reduce){.message-list__scroll-container{scroll-behavior:auto}.message-list__scroll-button{animation:none}.message-list__scroll-button:hover{transform:none}}.message-list--loading .message-list__messages{padding-bottom:0}.message-list__scroll-container:focus{outline:2px solid var(--color-accent-purple-light);outline-offset:-2px}.message-list__skeleton{padding:var(--space-md);display:flex;flex-direction:column;gap:var(--space-lg)}.message-list__skeleton-item{display:flex;gap:var(--space-md);align-items:flex-start}.message-list__skeleton-avatar{width:40px;height:40px;border-radius:var(--radius-full);background:linear-gradient(90deg,var(--color-message-border) 0%,var(--color-secondary-bg) 50%,var(--color-message-border) 100%);background-size:200% 100%;animation:skeleton-shimmer 1.5s infinite;flex-shrink:0}.message-list__skeleton-content{flex:1;display:flex;flex-direction:column;gap:var(--space-xs)}.message-list__skeleton-line{height:16px;border-radius:var(--radius-sm);background:linear-gradient(90deg,var(--color-message-border) 0%,var(--color-secondary-bg) 50%,var(--color-message-border) 100%);background-size:200% 100%;animation:skeleton-shimmer 1.5s infinite}.message-list__skeleton-line--short{width:60%}.message-list__skeleton-line--medium{width:80%}.message-list__skeleton-line--long{width:90%}@keyframes skeleton-shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.input-bar{position:relative;padding:var(--space-md);padding-bottom:calc(var(--space-md) + var(--safe-area-inset-bottom));background:var(--color-secondary-bg);border-top:1px solid var(--color-message-border);backdrop-filter:blur(10px);transition:padding .3s var(--ease-out)}.input-bar--keyboard-open{padding-bottom:var(--space-sm)}.input-bar__form{max-width:var(--max-width-chat);margin:0 auto}.input-bar__container{display:flex;align-items:flex-end;gap:var(--space-sm);background:var(--color-primary-bg);border:2px solid var(--color-message-border);border-radius:var(--radius-xl);padding:var(--space-sm);transition:all var(--transition-fast);cursor:text}.input-bar--focused .input-bar__container{border-color:var(--color-accent-purple-light);box-shadow:var(--shadow-mystical)}.input-bar--disabled .input-bar__container{opacity:.6;cursor:not-allowed}.input-bar--over-limit .input-bar__container{border-color:var(--color-error)}.input-bar__input-wrapper{flex:1;position:relative;min-height:44px;display:flex;align-items:center}.input-bar__input{width:100%;background:transparent;border:none;outline:none;color:var(--color-text-primary);font-size:var(--font-size-md);line-height:var(--line-height-normal);resize:none;min-height:24px;max-height:120px;overflow-y:auto;padding:var(--space-sm) 0;font-family:inherit}.input-bar__input::placeholder{color:var(--color-text-muted);font-style:italic}.input-bar__input:disabled{cursor:not-allowed}.input-bar__character-count{position:absolute;top:-24px;right:0;font-size:var(--font-size-xs);color:var(--color-text-muted);padding:var(--space-xs) var(--space-sm);background:var(--color-secondary-bg);border-radius:var(--radius-sm);border:1px solid var(--color-message-border)}.input-bar__character-count--warning{color:var(--color-warning);border-color:var(--color-warning)}.input-bar__character-count--error{color:var(--color-error);border-color:var(--color-error)}.input-bar__send-button{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--radius-full);background:var(--color-accent-purple);color:var(--color-text-primary);border:none;cursor:pointer;transition:all var(--transition-fast);flex-shrink:0;font-size:var(--font-size-lg);position:relative;overflow:hidden}.input-bar__send-button:disabled{background:var(--color-text-muted);cursor:not-allowed;opacity:.5}.input-bar__send-button--active{background:var(--color-accent-purple-light);box-shadow:var(--shadow-mystical)}.input-bar__send-button--active:hover{background:var(--color-accent-purple);transform:scale(1.05)}.input-bar__send-button--active:active{transform:scale(.95)}.input-bar__send-button--loading{background:var(--color-accent-purple);cursor:wait}.input-bar__send-icon{transition:transform var(--transition-fast)}.input-bar__send-button--active:hover .input-bar__send-icon{transform:scale(1.2)}.input-bar__loading-spinner{display:flex;align-items:center;justify-content:center}.input-bar__hint{display:flex;justify-content:center;margin-top:var(--space-sm);opacity:0;transition:opacity var(--transition-fast)}.input-bar--focused 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