:root{--primary-color: #16A34A;--primary-light: #22C55E;--primary-dark: #15803D;--secondary-color: #C4B5FD;--user-message-bg: #16A34A;--bot-message-bg: #F5F5F5;--accent-bg: #E8F5E9;--text-primary: #333333;--text-secondary: #666666;--text-light: #999999;--border-color: #E0E0E0;--success-bg: #E8F5E9;--warning-bg: #FFF3E0;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif}body{margin:0;font-family:var(--font-family);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f5f5f5;color:var(--text-primary);line-height:1.5}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}*{box-sizing:border-box}button{font-family:var(--font-family);cursor:pointer;border:none;border-radius:8px;padding:10px 20px;font-size:16px;transition:background-color .2s ease}a{text-decoration:none;transition:color .2s ease}a:hover{text-decoration:underline}.message-user,.user-message{background-color:var(--primary-color);color:#fff;padding:12px 16px;border-radius:16px;margin:8px 0}.message-bot,.bot-message,.coach-message{background-color:var(--bot-message-bg);color:var(--text-primary);padding:12px 16px;border-radius:16px;margin:8px 0}.success,.success-message{background-color:var(--success-bg);color:#2e7d32}.warning,.warning-message{background-color:var(--warning-bg);color:#e65100}h1{font-size:24px;font-weight:600;color:#333;line-height:1.3;margin-bottom:16px}h2{font-size:18px;font-weight:600;color:#333;line-height:1.3;margin-bottom:12px}h3{font-size:16px;font-weight:600;color:#333;line-height:1.3;margin-bottom:8px}p{font-size:14px;line-height:1.5;margin-bottom:12px}small{font-size:12px;color:#999;line-height:1.4}input,textarea,select{font-size:16px;font-family:inherit;line-height:1.5}.text-xs{font-size:12px}.text-sm{font-size:14px}.text-base{font-size:16px}.text-lg{font-size:18px}.text-xl{font-size:24px}.font-normal{font-weight:400}.font-medium{font-weight:500}.font-semibold{font-weight:600}.font-bold{font-weight:700}.text-primary{color:#333}.text-secondary{color:#666}.text-light{color:#999}.text-left{text-align:left}.text-center{text-align:center}.text-right{text-align:right}.leading-tight{line-height:1.25}.leading-normal{line-height:1.5}.leading-relaxed{line-height:1.75}@media(max-width:320px){h1{font-size:20px}h2{font-size:16px}h3{font-size:14px}p{font-size:13px}}@media(min-width:768px){h1{font-size:28px}h2{font-size:20px}h3{font-size:18px}p{font-size:16px}}