*{
    box-sizing:border-box;
}
body{
    margin:0;
    min-height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
    background:linear-gradient(135deg,#667eea,#764ba2);
    font-family:'Segoe UI',Arial,sans-serif;
}
.container{
    background:white;
    width:850px;
    max-width:95%;
    padding:30px;
    border-radius:20px;
    box-shadow:0 15px 35px rgba(0,0,0,.25);
   text-align:center;
}
.h1{
    margin-bottom:25px;
    color:#333;
    font-size:30px;
}
.camera-box{
    position:relative;
    display:inline-block;
}
.btn-camera,
.btn-stop{
    padding:12px 25px;
    border:none;
    border-radius:10px;
    cursor:pointer;
    color:#fff;
    font-size:16px;
    margin:5px;
    transition:.3s;
}
.btn-camera{
    background:#2196F3;
}
.btn-camera:hover{
    background:#1976D2;
}
.btn-stop{
    background:#f44336;
}

.btn-stop:hover{
    background:#d32f2f;
}
.btn-home{
    display:inline-block;
    padding:12px 25px;
    margin:5px;
    background:#28a745;
    color:#fff;
    text-decoration:none;
    border-radius:10px;
    font-size:16px;
    transition:.3s;
}

.btn-home:hover{
    background:#218838;
}
video{
    width:720px;
    max-width:100%;
    border-radius:20px;
    border:5px solid #667eea;
    box-shadow:0 10px 25px rgba(0,0,0,.2);
}
.status-box{
    margin-top:25px;
    padding:15px;
    border-radius:15px;
    background:#f5f5f5;
    font-size:22px;
    font-weight:bold;
    color:#555;
}
#emotion{
    color:#667eea;
}
.info{
    margin-top:15px;
    font-size:14px;
    color:#777;
}