:root{--primary-color: #6d5ce7;--secondary-color: #a49eff;--bg-gradient:linear-gradient( 135deg, #CE9FFC 10%, #7367F0 100%);--text-dark: #333;--text-light: #fff;--text-secondary: #8a8a8a;--border-color: #e9e9e9;--bg-light: #f8f9fa;--bg-received-msg: #f0f2f5;--bg-sent-msg: var(--primary-color);--font-family: "Poppins", sans-serif}body{margin:0;font-family:var(--font-family);background:var(--bg-gradient);display:flex;justify-content:center;align-items:center;min-height:100vh;color:var(--text-dark)}*{box-sizing:border-box}