:root{--primary: #0f172a;--secondary: #4F46E5;--accent: #4338ca;--accent-light: #818cf8;--bg: #f8fafc;--bg-alt: #f1f5f9;--card-bg: #ffffff;--text: #334155;--text-light: #475569;--white: #ffffff;--text-on-secondary: #ffffff;--border: #e2e8f0;--success: #059669;--hero-gradient: linear-gradient(135deg, var(--bg) 0%, #e0e7ff 100%);--chatbot-gradient: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);--overlay-bg: rgba(0, 0, 0, .5);--card-shadow: 0 10px 30px rgba(0, 0, 0, .05);--card-shadow-hover: 0 20px 40px rgba(0, 0, 0, .08), 0 8px 16px rgba(0, 0, 0, .04);--btn-shadow: 0 8px 25px rgba(79, 70, 229, .35);--header-bg: rgba(255, 255, 255, .95);--header-glass-bg: rgba(255, 255, 255, .7);--mobile-menu-bg: white;--footer-bg: var(--primary);--footer-text: white;--section-dark-bg: #0f172a;--section-dark-text: white;--tech-stack-bg: #f8fafc;--tech-stack-text: #0f172a;--tech-stack-grid: rgba(79, 70, 229, .2);--tech-stack-card-bg: #ffffff;--tech-stack-card-border: #e2e8f0;--tech-stack-card-active-bg: rgba(79, 70, 229, .08);--tech-stack-card-active-border: rgba(79, 70, 229, .3);--tech-stack-muted: #64748b;--tech-stack-accent: #4F46E5;--tech-stack-feature-bg: rgba(79, 70, 229, .05);--tech-stack-check: #059669;--chat-container-bg: #f9fafb;--chat-bubble-bg: #ffffff;--chat-header-bg: #4338ca;--chat-header-text: #ffffff;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--ease-out-expo: cubic-bezier(.16, 1, .3, 1);--ease-out-back: cubic-bezier(.34, 1.56, .64, 1);--ease-in-out: cubic-bezier(.4, 0, .2, 1);--theme-transition: background-color .3s ease, color .3s ease, border-color .3s ease, box-shadow .3s ease}[data-theme=dark]{--primary: #f1f5f9;--secondary: #a5b4fc;--accent: #c4b5fd;--accent-light: #dcd3ff;--bg: #0f172a;--bg-alt: #1e293b;--card-bg: #1e293b;--text: #e2e8f0;--text-light: #cbd5e1;--white: #0f172a;--border: #334155;--success: #4ade80;--hero-gradient: linear-gradient(135deg, var(--bg) 0%, #1e1b4b 100%);--chatbot-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);--overlay-bg: rgba(0, 0, 0, .7);--card-shadow: 0 10px 30px rgba(0, 0, 0, .3);--card-shadow-hover: 0 20px 40px rgba(0, 0, 0, .4), 0 8px 16px rgba(0, 0, 0, .2);--btn-shadow: 0 8px 25px rgba(129, 140, 248, .35);--header-bg: rgba(15, 23, 42, .95);--header-glass-bg: rgba(15, 23, 42, .7);--mobile-menu-bg: #1e293b;--footer-bg: #020617;--footer-text: #e2e8f0;--section-dark-bg: #1e293b;--section-dark-text: #f1f5f9;--tech-stack-bg: #0f172a;--tech-stack-text: #f1f5f9;--tech-stack-grid: rgba(129, 140, 248, .2);--tech-stack-card-bg: rgba(255, 255, 255, .03);--tech-stack-card-border: rgba(255, 255, 255, .05);--tech-stack-card-active-bg: rgba(129, 140, 248, .15);--tech-stack-card-active-border: rgba(129, 140, 248, .3);--tech-stack-muted: rgba(255, 255, 255, .65);--tech-stack-accent: #818cf8;--tech-stack-feature-bg: rgba(255, 255, 255, .05);--tech-stack-check: #4ade80;--chat-container-bg: #0f172a;--chat-bubble-bg: #334155;--chat-header-bg: #4f46e5;--chat-header-text: #ffffff;--text-on-secondary: #0f172a}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-sans);background-color:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;transition:var(--theme-transition)}a{text-decoration:none;color:inherit}ul{list-style:none}img{max-width:100%;display:block}.container{max-width:1200px;margin:0 auto;padding:0 20px}.btn{display:inline-block;padding:12px 24px;border-radius:100px;font-weight:600;transition:all .2s var(--ease-out-expo);cursor:pointer;border:none;position:relative;overflow:hidden}.btn:after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,.2) 0%,transparent 50%);opacity:0;transition:opacity .3s 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