body {
    margin: 0;
    padding: 0;
    background-color: #eaf8f8;
    font-family: 'Segoe UI', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.contenedor {
    text-align: center;
    background-color: white;
    padding: 20px 16px;
    border-radius: 20px;
    box-shadow: 0 0 25px rgba(0,0,0,0.15);
    width: 100%;
    max-width: 420px;
    box-sizing: border-box;
}

h1 {
    color: #00a7b5;
    margin-bottom: 8px;
    font-size: 20px;
}

.instrucciones {
    color: #444;
    margin-bottom: 12px;
    font-size: 14px;
}

/* VIDEO RESPONSIVE */
.video-container {
    position: relative;
    width: 100%;
    max-width: 360px;
    margin: 0 auto;
}

#video {
    width: 100%;
    height: auto;
    border-radius: 12px;
    background: #000;
}

/* Canvas encima del video con el mismo tamaño */
canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100% !important;
    height: 100% !important;
}

#btnIniciar {
    background-color: #00a7b5;
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 20px;
    font-size: 15px;
    cursor: pointer;
    margin-top: 16px;
    transition: background-color 0.3s;
    width: 100%;
    max-width: 260px;
}

#btnIniciar:hover {
    background-color: #008c96;
}

#estado {
    margin-top: 10px;
    font-weight: bold;
    color: #003c4d;
    font-size: 14px;
}