:root{--color-bg-primary: #0a0a0f;--color-bg-secondary: #12121a;--color-bg-tertiary: #1a1a24;--color-glass: rgba(255, 255, 255, .03);--color-glass-border: rgba(255, 255, 255, .08);--color-glass-hover: rgba(255, 255, 255, .06);--color-primary: #3B82F6;--color-primary-hover: #2563EB;--color-primary-glow: rgba(59, 130, 246, .3);--color-secondary: #60A5FA;--color-cta: #F97316;--color-cta-hover: #EA580C;--color-success: #22C55E;--color-warning: #F59E0B;--color-error: #EF4444;--color-text-primary: #F8FAFC;--color-text-secondary: #94A3B8;--color-text-muted: #64748B;--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;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: .375rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-xl: 1.5rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 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 var(--color-primary-glow);--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--header-height: 64px;--sidebar-width: 320px}*,*: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);font-size:var(--font-size-base);line-height:1.6;color:var(--color-text-primary);background:var(--color-bg-primary);min-height:100vh;overflow:hidden}body:before{content:"";position:fixed;inset:0;background:radial-gradient(ellipse at 20% 20%,rgba(59,130,246,.15) 0%,transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(139,92,246,.1) 0%,transparent 50%),radial-gradient(ellipse at 50% 50%,rgba(249,115,22,.05) 0%,transparent 60%);pointer-events:none;z-index:0}#app{position:relative;z-index:1;display:flex;flex-direction:column;height:100vh}.hidden{display:none!important}.icon{width:20px;height:20px;flex-shrink:0}.glass-panel{background:var(--color-glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--color-glass-border);border-radius:var(--radius-lg)}.webgpu-warning{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-lg);background:#ef444426;border-bottom:1px solid rgba(239,68,68,.3);color:#fca5a5;font-size:var(--font-size-sm);font-weight:500}.webgpu-warning .icon{color:var(--color-error)}.header{height:var(--header-height);padding:0 var(--spacing-lg);border-bottom:1px solid var(--color-glass-border);background:#0a0a0fcc;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.header-content{display:flex;align-items:center;justify-content:space-between;height:100%;max-width:1600px;margin:0 auto}.logo{display:flex;align-items:center;gap:var(--spacing-sm)}.logo-icon{width:32px;height:32px;color:var(--color-primary)}.logo h1{font-size:var(--font-size-xl);font-weight:600;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.model-status{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background:var(--color-glass);border:1px solid var(--color-glass-border);border-radius:var(--radius-full);font-size:var(--font-size-sm)}.status-dot{width:8px;height:8px;border-radius:50%;background:var(--color-text-muted);transition:background var(--transition-base)}.model-status.loading .status-dot{background:var(--color-warning);animation:pulse 1.5s ease-in-out infinite}.model-status.ready .status-dot{background:var(--color-success)}.model-status.error .status-dot{background:var(--color-error)}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.2)}}.main-container{display:flex;flex:1;gap:var(--spacing-lg);padding:var(--spacing-lg);max-width:1600px;margin:0 auto;width:100%;overflow:hidden}.sidebar{width:var(--sidebar-width);flex-shrink:0;display:flex;flex-direction:column;gap:var(--spacing-lg);padding:var(--spacing-lg);overflow-y:auto}.sidebar-header{display:flex;align-items:center;gap:var(--spacing-sm);color:var(--color-text-secondary)}.sidebar-header h2{font-size:var(--font-size-base);font-weight:500}.pdf-drop-zone{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-2xl) var(--spacing-lg);border:2px dashed var(--color-glass-border);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-base);text-align:center}.pdf-drop-zone:hover,.pdf-drop-zone.dragover{border-color:var(--color-primary);background:#3b82f60d}.pdf-drop-zone .upload-icon{width:48px;height:48px;color:var(--color-text-muted);margin-bottom:var(--spacing-md);transition:color var(--transition-base)}.pdf-drop-zone:hover .upload-icon{color:var(--color-primary)}.drop-text{font-weight:500;color:var(--color-text-primary);margin-bottom:var(--spacing-xs)}.drop-subtext{font-size:var(--font-size-sm);color:var(--color-text-muted)}.pdf-info{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-md);background:var(--color-bg-tertiary);border-radius:var(--radius-md)}.pdf-preview{display:flex;align-items:center;gap:var(--spacing-sm)}.pdf-icon{width:32px;height:32px;color:var(--color-cta)}.pdf-details{display:flex;flex-direction:column}.pdf-name{font-size:var(--font-size-sm);font-weight:500;color:var(--color-text-primary);max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.pdf-pages{font-size:var(--font-size-xs);color:var(--color-text-muted)}.btn-remove{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:transparent;border:none;border-radius:var(--radius-sm);color:var(--color-text-muted);cursor:pointer;transition:all var(--transition-fast)}.btn-remove:hover{background:#ef44441a;color:var(--color-error)}.btn-remove svg{width:16px;height:16px}.extraction-status{display:flex;flex-direction:column;gap:var(--spacing-sm)}.extraction-progress{height:4px;background:var(--color-bg-tertiary);border-radius:var(--radius-full);overflow:hidden}.extraction-bar{height:100%;width:0%;background:linear-gradient(90deg,var(--color-primary),var(--color-secondary));border-radius:var(--radius-full);transition:width var(--transition-base)}.extraction-text{font-size:var(--font-size-xs);color:var(--color-text-muted)}.model-selector{display:flex;flex-direction:column;gap:var(--spacing-sm)}.model-selector label{font-size:var(--font-size-sm);font-weight:500;color:var(--color-text-secondary)}.select-input{padding:var(--spacing-sm) var(--spacing-md);background:var(--color-bg-tertiary);border:1px solid var(--color-glass-border);border-radius:var(--radius-md);color:var(--color-text-primary);font-family:var(--font-family);font-size:var(--font-size-sm);cursor:pointer;transition:all var(--transition-fast)}.select-input:hover{border-color:var(--color-primary)}.select-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-glow)}.btn-primary{display:flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-lg);background:linear-gradient(135deg,var(--color-primary),var(--color-primary-hover));border:none;border-radius:var(--radius-md);color:#fff;font-family:var(--font-family);font-size:var(--font-size-sm);font-weight:600;cursor:pointer;transition:all var(--transition-fast)}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:var(--shadow-glow)}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.loading-progress{display:flex;flex-direction:column;gap:var(--spacing-sm)}.progress-bar{height:8px;background:var(--color-bg-tertiary);border-radius:var(--radius-full);overflow:hidden}.progress-fill{height:100%;width:0%;background:linear-gradient(90deg,var(--color-primary),var(--color-cta));border-radius:var(--radius-full);transition:width var(--transition-fast);animation:shimmer 2s ease-in-out infinite}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.progress-text{font-size:var(--font-size-xs);color:var(--color-text-muted);text-align:center}.chat-area{flex:1;display:flex;flex-direction:column;overflow:hidden}.chat-messages{flex:1;padding:var(--spacing-lg);overflow-y:auto;display:flex;flex-direction:column;gap:var(--spacing-lg)}.message{display:flex;gap:var(--spacing-md);max-width:85%;animation:messageIn .3s ease}@keyframes messageIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.user{align-self:flex-end;flex-direction:row-reverse}.message-avatar{width:40px;height:40px;flex-shrink:0;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-full);background:var(--color-bg-tertiary);border:1px solid var(--color-glass-border)}.message.user .message-avatar{background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));border:none}.message-avatar svg{width:20px;height:20px;color:var(--color-text-secondary)}.message.user .message-avatar svg{color:#fff}.message-content{padding:var(--spacing-md) var(--spacing-lg);background:var(--color-bg-tertiary);border-radius:var(--radius-lg);border:1px solid var(--color-glass-border)}.message.user .message-content{background:linear-gradient(135deg,var(--color-primary),var(--color-primary-hover));border:none}.message-content p{margin-bottom:var(--spacing-sm)}.message-content p:last-child{margin-bottom:0}.message-content strong{color:var(--color-secondary)}.message.user .message-content strong{color:#fff}.message-content .hint{font-size:var(--font-size-sm);color:var(--color-text-muted);font-style:italic}.message-actions{display:flex;gap:var(--spacing-sm);margin-top:var(--spacing-sm);padding-top:var(--spacing-sm);border-top:1px solid var(--color-glass-border)}.btn-speak{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:transparent;border:1px solid var(--color-glass-border);border-radius:var(--radius-sm);color:var(--color-text-muted);cursor:pointer;transition:all var(--transition-fast)}.btn-speak:hover{background:#22c55e1a;border-color:var(--color-success);color:var(--color-success)}.btn-speak.speaking{background:#22c55e26;border-color:var(--color-success);color:var(--color-success);animation:speakPulse 1s ease-in-out infinite}.btn-speak svg{width:16px;height:16px}@keyframes speakPulse{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}.message-content .typing-indicator{display:inline-flex;gap:4px;padding:4px 0}.typing-indicator span{width:6px;height:6px;background:var(--color-text-muted);border-radius:50%;animation:typing 1.4s infinite}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-4px)}}.chat-input-container{padding:var(--spacing-lg);border-top:1px solid var(--color-glass-border)}.chat-input-wrapper{display:flex;align-items:flex-end;gap:var(--spacing-sm);padding:var(--spacing-sm);background:var(--color-bg-tertiary);border:1px solid var(--color-glass-border);border-radius:var(--radius-lg);transition:all var(--transition-fast)}.chat-input-wrapper:focus-within{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-glow)}.context-badge{display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-sm);background:#f9731626;border:1px solid rgba(249,115,22,.3);border-radius:var(--radius-sm);color:var(--color-cta);font-size:var(--font-size-xs);font-weight:500}.context-badge .icon{width:14px;height:14px}.chat-input{flex:1;padding:var(--spacing-sm) var(--spacing-md);background:transparent;border:none;color:var(--color-text-primary);font-family:var(--font-family);font-size:var(--font-size-base);resize:none;max-height:150px}.chat-input::placeholder{color:var(--color-text-muted)}.chat-input:focus{outline:none}.chat-input:disabled{opacity:.5;cursor:not-allowed}.btn-send{display:flex;align-items:center;justify-content:center;width:44px;height:44px;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-hover));border:none;border-radius:var(--radius-md);color:#fff;cursor:pointer;transition:all var(--transition-fast);flex-shrink:0}.btn-send:hover:not(:disabled){transform:scale(1.05);box-shadow:var(--shadow-glow)}.btn-send:disabled{opacity:.5;cursor:not-allowed}.btn-send svg{width:20px;height:20px}.input-hint{margin-top:var(--spacing-sm);font-size:var(--font-size-xs);color:var(--color-text-muted);text-align:center}.btn-mic{display:flex;align-items:center;justify-content:center;width:44px;height:44px;background:transparent;border:1px solid var(--color-glass-border);border-radius:var(--radius-md);color:var(--color-text-muted);cursor:pointer;transition:all var(--transition-fast);flex-shrink:0}.btn-mic:hover:not(:disabled){background:#ef44441a;border-color:var(--color-error);color:var(--color-error)}.btn-mic:disabled{opacity:.5;cursor:not-allowed}.btn-mic.recording{background:#ef444433;border-color:var(--color-error);color:var(--color-error);animation:micPulse 1s ease-in-out infinite}.btn-mic svg{width:20px;height:20px}@keyframes micPulse{0%,to{transform:scale(1);box-shadow:none}50%{transform:scale(1.05);box-shadow:0 0 15px #ef444466}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-glass-border);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}@media(max-width:1024px){.main-container{flex-direction:column}.sidebar{width:100%;max-height:40vh}.chat-area{min-height:50vh}}@media(max-width:768px){:root{--header-height: 56px;--spacing-lg: 1rem;--spacing-xl: 1.5rem}.logo h1{font-size:var(--font-size-lg)}.model-status .status-text{display:none}.message{max-width:95%}.pdf-drop-zone{padding:var(--spacing-lg)}}@media(max-width:480px){.sidebar{max-height:35vh}.header-content{padding:0 var(--spacing-sm)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}