body{margin:0;font-family:Arial;background:#0b141a;color:white}.sidebar{width:240px;height:100vh;background:#111b21;position:fixed;padding:20px}.sidebar ul{list-style:none;padding:0}.sidebar li{padding:15px;background:#202c33;margin-bottom:10px;border-radius:10px}.main{margin-left:260px;padding:30px}.cards{display:flex;gap:20px}.card{background:#111b21;padding:20px;border-radius:15px}.chat-box{display:flex;height:70vh;background:#111b21;border-radius:20px;margin-top:20px}.chat-list{width:30%;background:#202c33;padding:20px}.chat-window{width:70%;padding:20px}input,textarea{width:100%;padding:15px;margin-bottom:15px;border:none;border-radius:10px;background:#202c33;color:white}button{padding:15px;background:#25d366;border:none;border-radius:10px;color:white;width:100%}.login-body{display:flex;justify-content:center;align-items:center;height:100vh}.login-box{background:#111b21;padding:40px;border-radius:20px;width:350px}