* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    background: #000;
    overflow: hidden;
    font-family: Arial, Helvetica, sans-serif;
}

/* ================================
   GRID 2 x 2
================================ */
#monitor {
    width: 100vw;
    height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 3px;
    background: #222;
}

/* ================================
   CADA TELA
================================ */
.tela {
    position: relative;
    width: 100%;
    height: 100%;
    background: #000;
    overflow: hidden;
}

/* ================================
   VÍDEO NATIVO
================================ */
.tela video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: #000;
}

/* ================================
   IFRAME (YOUTUBE / WEB)
================================ */
.tela iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
    background: #000;
}

/* ================================
   NOME DO CANAL
================================ */
.identificacao {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 20;
    padding: 7px 12px;
    background: rgba(0, 0, 0, 0.78);
    color: white;
    font-size: 15px;
    font-weight: bold;
}

/* ================================
   STATUS DO SINAL
================================ */
.status {
    position: absolute;
    left: 10px;
    bottom: 8px;
    z-index: 20;
    padding: 4px 8px;
    background: rgba(0, 0, 0, 0.70);
    color: #00ff66;
    font-size: 11px;
    font-weight: bold;
}

/* ================================
   RELÓGIO SUPERIOR
================================ */
#relogio {
    position: fixed;
    right: 12px;
    top: 8px;
    z-index: 100;
    padding: 5px 10px;
    background: rgba(0, 0, 0, 0.78);
    color: white;
    font-size: 18px;
    font-weight: bold;
}

/* ================================
   IDENTIDADE RÁDIO UFG
================================ */
#identidade {
    position: fixed;
    left: 50%;
    bottom: 7px;
    transform: translateX(-50%);
    z-index: 100;
    padding: 5px 12px;
    background: rgba(0, 0, 0, 0.75);
    color: white;
    font-size: 12px;
    font-weight: bold;
}