.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:var(--color-bg-primary);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--color-border);transition:all .3s ease;opacity:.95}.header.scrolled{background:var(--color-bg-primary);box-shadow:var(--shadow-md);opacity:.98}.header-content{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-md) 0}.logo{font-size:1.5rem;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;transition:transform .3s ease}.logo:hover{transform:scale(1.05)}.nav{display:flex;gap:var(--spacing-lg);align-items:center}.nav-link{color:var(--color-text-secondary);font-weight:500;transition:color .3s ease;position:relative;padding:var(--spacing-xs) 0}.nav-link:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--gradient-primary);transition:width .3s ease;border-radius:2px}.nav-link:hover,.nav-link.active{color:var(--color-text-primary)}.nav-link:hover:after,.nav-link.active:after{width:100%}.mobile-menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:var(--spacing-xs);color:var(--color-text-primary);transition:color .3s ease}.mobile-menu-toggle:hover{color:var(--color-accent-primary)}@media (max-width: 768px){.mobile-menu-toggle{display:flex}.nav{position:absolute;top:100%;left:0;right:0;flex-direction:column;background:var(--color-bg-secondary);padding:var(--spacing-md);gap:var(--spacing-md);border-top:1px solid var(--glass-border);transform:translateY(-100%);opacity:0;visibility:hidden;transition:all .3s ease}.nav.open{transform:translateY(0);opacity:1;visibility:visible}.nav-link{width:100%;padding:var(--spacing-sm)}}.footer{background:var(--color-bg-secondary);border-top:1px solid var(--color-border);padding:var(--spacing-2xl) 0 var(--spacing-lg);margin-top:var(--spacing-2xl)}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--spacing-xl);margin-bottom:var(--spacing-xl)}.footer-section h3,.footer-section h4{margin-bottom:var(--spacing-md);color:var(--color-text-primary)}.footer-logo{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.footer-description{color:var(--color-text-secondary);max-width:300px}.footer-links{list-style:none;display:flex;flex-direction:column;gap:var(--spacing-sm)}.footer-links a{color:var(--color-text-secondary);transition:color .3s ease}.footer-links a:hover{color:var(--color-accent-primary)}.footer-bottom{text-align:center;padding-top:var(--spacing-lg);border-top:1px solid var(--color-border);color:var(--color-text-muted)}@media (max-width: 768px){.footer-content{grid-template-columns:1fr;gap:var(--spacing-lg)}}.chatbot-button{position:fixed;bottom:var(--spacing-lg);right:var(--spacing-lg);width:60px;height:60px;border-radius:50%;background:var(--gradient-primary);border:none;color:#fff;cursor:pointer;box-shadow:0 4px 20px #667eea66;display:flex;align-items:center;justify-content:center;z-index:1000;transition:all .3s ease}.chatbot-button:hover{transform:scale(1.1);box-shadow:0 6px 25px #667eea99}.chatbot-container{position:fixed;bottom:var(--spacing-lg);right:var(--spacing-lg);width:400px;height:600px;max-height:calc(100vh - 2rem);background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);display:flex;flex-direction:column;z-index:1000;animation:slideUp .3s ease-out;-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur)}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.chatbot-header{background:var(--gradient-primary);padding:var(--spacing-md);border-radius:var(--radius-lg) var(--radius-lg) 0 0;display:flex;justify-content:space-between;align-items:flex-start;box-shadow:var(--shadow-sm)}.chatbot-header-content h3{color:#fff;margin-bottom:var(--spacing-xs);font-size:1.25rem}.chatbot-header-content p{color:#ffffffe6;font-size:.875rem;margin:0}.chatbot-close{background:none;border:none;color:#fff;font-size:2rem;cursor:pointer;line-height:1;padding:0;width:30px;height:30px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:background .3s ease}.chatbot-close:hover{background:#fff3}.chatbot-messages{flex:1;overflow-y:auto;padding:var(--spacing-md);display:flex;flex-direction:column;gap:var(--spacing-md)}.message{display:flex;max-width:80%}.message-user{align-self:flex-end}.message-assistant{align-self:flex-start}.message-content{padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);word-wrap:break-word}.message-user .message-content{background:var(--gradient-primary);color:#fff;border-bottom-right-radius:4px}.message-assistant .message-content{background:var(--color-bg-card);color:var(--color-text-primary);border:1px solid var(--color-border);border-bottom-left-radius:4px}.message-assistant .message-content :global(h1),.message-assistant .message-content :global(h2),.message-assistant .message-content :global(h3),.message-assistant .message-content :global(h4),.message-assistant .message-content :global(h5),.message-assistant .message-content :global(h6){margin:.5em 0 .3em;font-weight:600;line-height:1.3}.message-assistant .message-content :global(h1){font-size:1.5em}.message-assistant .message-content :global(h2){font-size:1.3em}.message-assistant .message-content :global(h3){font-size:1.1em}.message-assistant .message-content :global(p){margin:.5em 0;line-height:1.5}.message-assistant .message-content :global(p:first-child){margin-top:0}.message-assistant .message-content :global(p:last-child){margin-bottom:0}.message-assistant .message-content :global(ul),.message-assistant .message-content :global(ol){margin:.5em 0;padding-left:1.5em}.message-assistant .message-content :global(li){margin:.3em 0;line-height:1.5}.message-assistant .message-content :global(code){background:#0000001a;padding:.2em .4em;border-radius:3px;font-family:Courier New,monospace;font-size:.9em}.message-assistant .message-content :global(pre){background:#0000000d;padding:.8em;border-radius:var(--radius-sm);overflow-x:auto;margin:.5em 0}.message-assistant .message-content :global(pre code){background:none;padding:0;font-size:.85em}.message-assistant .message-content :global(a){color:var(--color-accent-primary);text-decoration:underline;word-break:break-word}.message-assistant .message-content :global(a:hover){opacity:.8}.message-assistant .message-content :global(blockquote){border-left:3px solid var(--color-accent-primary);padding-left:1em;margin:.5em 0;opacity:.8}.message-assistant .message-content :global(strong){font-weight:600}.message-assistant .message-content :global(em){font-style:italic}.message-assistant .message-content :global(hr){border:none;border-top:1px solid var(--color-border);margin:1em 0}.message-assistant .message-content :global(table){border-collapse:collapse;margin:.5em 0;width:100%;font-size:.9em}.message-assistant .message-content :global(th),.message-assistant .message-content :global(td){border:1px solid var(--color-border);padding:.4em .6em;text-align:left}.message-assistant .message-content :global(th){background:#0000000d;font-weight:600}.typing-indicator{display:flex;gap:4px;padding:var(--spacing-xs) 0}.typing-indicator span{width:8px;height:8px;border-radius:50%;background:var(--color-text-secondary);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);opacity:.7}30%{transform:translateY(-10px);opacity:1}}.chatbot-input-form{display:flex;padding:var(--spacing-md);border-top:1px solid var(--color-border);gap:var(--spacing-sm);background:var(--color-bg-secondary)}.chatbot-input{flex:1;padding:var(--spacing-sm) var(--spacing-md);background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text-primary);font-family:inherit;font-size:1rem}.chatbot-input:focus{outline:none;border-color:var(--color-accent-primary);box-shadow:0 0 0 2px #667eea1a}.chatbot-send{padding:var(--spacing-sm);background:var(--gradient-primary);border:none;border-radius:var(--radius-md);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s ease}.chatbot-send:hover:not(:disabled){transform:scale(1.1)}.chatbot-send:disabled{opacity:.5;cursor:not-allowed}@media (max-width: 768px){.chatbot-container{width:calc(100vw - 2rem);height:calc(100vh - 2rem);bottom:1rem;right:1rem}.chatbot-button{bottom:1rem;right:1rem}}.theme-selector{position:relative}.theme-selector-button{position:fixed;bottom:calc(var(--spacing-lg) + 80px);right:var(--spacing-lg);width:50px;height:50px;border-radius:50%;background:var(--gradient-primary);border:none;color:#fff;cursor:pointer;box-shadow:var(--shadow-lg);display:flex;align-items:center;justify-content:center;z-index:999;transition:all .3s ease}.theme-selector-button:hover{transform:scale(1.1);box-shadow:var(--shadow-glow)}.theme-selector-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.theme-selector-dropdown{position:fixed;bottom:calc(var(--spacing-lg) + 140px);right:var(--spacing-lg);width:320px;max-height:500px;background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);z-index:1001;overflow:hidden;animation:slideUp .3s ease-out}.theme-selector-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-md);border-bottom:1px solid var(--color-border);background:var(--color-bg-primary)}.theme-selector-header h3{margin:0;font-size:1.125rem;color:var(--color-text-primary)}.theme-selector-close{background:none;border:none;color:var(--color-text-secondary);font-size:1.5rem;cursor:pointer;padding:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all .3s ease}.theme-selector-close:hover{background:var(--color-bg-card);color:var(--color-text-primary)}.theme-selector-list{padding:var(--spacing-sm);max-height:400px;overflow-y:auto}.theme-option{width:100%;display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);background:transparent;border:2px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:all .3s ease;text-align:left;margin-bottom:var(--spacing-xs)}.theme-option:hover{background:var(--color-bg-card);border-color:var(--color-border)}.theme-option.active{background:var(--color-bg-card);border-color:var(--color-accent-primary);box-shadow:0 0 0 2px #667eea1a}.theme-preview{width:48px;height:48px;border-radius:var(--radius-md);flex-shrink:0;box-shadow:var(--shadow-sm)}.theme-info{flex:1;display:flex;flex-direction:column;gap:var(--spacing-xs)}.theme-name{font-weight:600;color:var(--color-text-primary);font-size:.9375rem}.theme-active-badge{font-size:.75rem;color:var(--color-accent-primary);font-weight:500}@media (max-width: 768px){.theme-selector-dropdown{width:calc(100vw - 2rem);right:1rem;bottom:calc(1rem + 140px)}.theme-selector-button{bottom:calc(1rem + 80px);right:1rem}}:root{--color-bg-primary: #0a0e27;--color-bg-secondary: #141b2d;--color-bg-tertiary: #1a2332;--color-bg-card: rgba(255, 255, 255, .05);--color-bg-card-hover: rgba(255, 255, 255, .08);--color-text-primary: #ffffff;--color-text-secondary: #b4b9c7;--color-text-muted: #6b7280;--color-text-inverse: #0a0e27;--color-accent-primary: #667eea;--color-accent-secondary: #764ba2;--color-accent-tertiary: #00d2ff;--color-accent-highlight: #f093fb;--gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--gradient-secondary: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 100%);--gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);--gradient-hero: radial-gradient(ellipse at center, rgba(102, 126, 234, .15) 0%, transparent 70%);--color-border: rgba(255, 255, 255, .1);--shadow-sm: 0 2px 4px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px rgba(0, 0, 0, .3);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .3);--shadow-xl: 0 20px 25px rgba(0, 0, 0, .4);--shadow-glow: 0 0 20px rgba(102, 126, 234, .4);--glass-bg: rgba(255, 255, 255, .05);--glass-border: rgba(255, 255, 255, .1);--glass-blur: blur(10px);--spacing-xs: .5rem;--spacing-sm: 1rem;--spacing-md: 1.5rem;--spacing-lg: 2rem;--spacing-xl: 3rem;--spacing-2xl: 4rem;--spacing-3xl: 6rem;--font-family-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;--font-family-heading: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;--radius-sm: .5rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-xl: 1.5rem;--radius-2xl: 2rem;--color-purple: var(--color-accent-primary);--color-blue: var(--color-accent-tertiary);--color-cyan: var(--color-accent-tertiary);--color-pink: var(--color-accent-highlight)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-family-primary);background-color:var(--color-bg-primary);color:var(--color-text-primary);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color .3s ease,color .3s ease}#root{min-height:100vh}.layout{min-height:100vh;display:flex;flex-direction:column}.main-content{flex:1}h1,h2,h3,h4,h5,h6{font-family:var(--font-family-heading);font-weight:700;line-height:1.2;margin-bottom:var(--spacing-md)}h1{font-size:clamp(2.5rem,5vw,4.5rem);font-weight:800;letter-spacing:-.02em;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1.1}h2{font-size:clamp(2rem,4vw,3rem);font-weight:700;letter-spacing:-.01em;color:var(--color-text-primary)}h3{font-size:clamp(1.5rem,3vw,2rem);font-weight:600;color:var(--color-text-primary)}h4{font-size:clamp(1.25rem,2.5vw,1.5rem);font-weight:600;color:var(--color-text-primary)}p{margin-bottom:var(--spacing-sm);color:var(--color-text-secondary)}a{color:var(--color-accent-primary);text-decoration:none;transition:color .3s ease}a:hover{color:var(--color-accent-tertiary)}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.section{padding:var(--spacing-3xl) 0;position:relative}.text-center{text-align:center}.gradient-text{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .6s ease-out}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}.pulse{animation:pulse 2s ease-in-out infinite}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes shimmer{0%{background-position:-1000px 0}to{background-position:1000px 0}}.slide-up{animation:slideUp .6s ease-out}@media (max-width: 768px){.container{padding:0 var(--spacing-sm)}.section{padding:var(--spacing-2xl) 0}}