:root{
  --bg:#f5f7fb;
  --card:#ffffff;
  --muted:#778095;
  --accent:#2563eb;
  --accent-600:#1e4fd6;
  --radius:12px;
  --shadow: 0 6px 24px rgba(16,24,40,0.06);
  --gap:12px;
  --max-width:1100px;
}

/* Reset-ish */
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial;
  background:var(--bg);
  color:#0f172a;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

/* Topbar */
.topbar{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:14px 20px;
  background:linear-gradient(90deg, #fff, #fbfdff);
  border-bottom:1px solid rgba(15,23,42,0.04);
  box-shadow:var(--shadow);
}
.brand{font-weight:600;font-size:18px}
.room-info{display:flex;flex-direction:column;align-items:flex-end}
.room-code{font-size:13px;color:var(--muted)}
.status{font-size:13px;color:var(--muted);margin-top:4px}

/* Main layout */
.app-grid{
  display:grid;
  grid-template-columns: 1fr 420px;
  gap:20px;
  max-width:var(--max-width);
  margin:22px auto;
  padding:0 20px;
}

/* Panels */
.panel{display:flex;flex-direction:column;gap:12px}
.card{
  background:var(--card);
  border-radius:var(--radius);
  padding:16px;
  box-shadow:var(--shadow);
  border:1px solid rgba(15,23,42,0.04);
}

/* Controls */
.row{display:flex;align-items:center}
.gap{gap:10px}
.input{
  padding:10px 12px;
  border-radius:10px;
  border:1px solid rgba(15,23,42,0.06);
  background:#fff;
  flex:1;
  font-size:14px;
}
.select{
  padding:8px 10px;
  border-radius:8px;
  border:1px solid rgba(15,23,42,0.06);
  background:#fff;
  font-size:14px;
  margin-left:8px;
}

/* Buttons */
.btn{
  padding:9px 12px;
  border-radius:10px;
  border:0;
  cursor:pointer;
  font-weight:600;
}
.btn.primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(37,99,235,0.12)}
.btn.secondary{background:#eef2ff;color:var(--accent)}
.btn.ghost{background:transparent;border:1px solid rgba(15,23,42,0.06);color:var(--muted)}

/* Chat area */
.chat-area{margin-top:8px}
.chat-box{
  height:360px;
  overflow:auto;
  border-radius:8px;
  border:1px solid rgba(15,23,42,0.04);
  padding:12px;
  background:linear-gradient(180deg,#fbfbff,#fff);
}
.message{display:block;padding:8px 12px;border-radius:10px;max-width:78%;margin:8px 0;word-break:break-word}
.message.me{margin-left:auto;background:#dcf8c6;text-align:right}
.message.peer{margin-right:auto;background:#ffffff}

/* send/file row */
.send-row{margin-top:12px;gap:8px}
.file-row{display:flex;align-items:center;gap:8px;margin-top:12px}
.file-label{display:inline-flex;align-items:center;gap:8px;padding:8px 10px;border-radius:8px;border:1px dashed rgba(15,23,42,0.06);cursor:pointer;background:#fff}
.file-label input{display:none}
.small{font-size:12px;color:var(--muted)}
.muted{color:var(--muted)}
.chip{display:inline-block;padding:6px 10px;border-radius:999px;background:#eef2ff;color:var(--accent);font-weight:600}

/* Media panel */
.media-card{display:flex;flex-direction:column;gap:12px}
.media-controls{display:flex;justify-content:space-between;align-items:center;gap:12px}
.selectors{display:flex;flex-direction:column;gap:8px;flex:1}
.media-buttons{display:flex;gap:8px;align-items:center}
.videos{display:flex;gap:12px;flex-wrap:wrap}
.video-wrap{flex:1;min-width:240px;display:flex;flex-direction:column;gap:6px;align-items:stretch}
.video-wrap video{width:100%;height:220px;border-radius:8px;background:#000;object-fit:cover;border:1px solid rgba(15,23,42,0.04)}
/* Mirror local video */
#localVideo {
  transform: scaleX(-1);
}

.video-title{font-size:13px;color:var(--muted)}

/* footer */
.footer{max-width:var(--max-width);margin:18px auto;padding:0 20px;color:var(--muted);font-size:13px}

/* small responsive */
@media (max-width:980px){
  .app-grid{grid-template-columns:1fr; padding:0 14px}
  .videos{flex-direction:column}
  .video-wrap video{height:200px}
}

/* Hiding helper for JS toggles */
.hidden {
  display: none !important;
}