:root{--primary-blue: #4a90e2;--secondary-teal: #00a8a8;--accent-green: #00c853;--light-bg: #f0f7ff;--card-shadow: 0 4px 20px rgba(74, 144, 226, .1);--border-radius: 12px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh}.app-container{min-height:100vh;background:linear-gradient(135deg,#f0f7ff,#e0f2ff,#f0f7ff);position:relative;overflow-x:hidden}.app-container:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background-image:url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23667eea" fill-opacity="0.05"><path d="M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 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