:root {
  --bg: #0f1420;
  --panel: #1a2130;
  --panel-2: #232c3d;
  --text: #e8edf5;
  --muted: #8b97ab;
  --accent: #4f7cff;
  --good: #00b894;
  --warn: #e17055;
  --danger: #ff5c6c;
  --line: #2c3648;
}

* { box-sizing: border-box; }

/* Ensure the [hidden] attribute always hides, even on elements with a
   display value set by author CSS (e.g. .overlay uses display:flex). */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", Meiryo, sans-serif;
  overflow: hidden;
  -webkit-user-select: none;
  user-select: none;
}

/* ---------- Join overlay ---------- */
.overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(1200px 600px at 50% -10%, #1c2740, var(--bg));
  z-index: 50;
}

.join-card {
  width: min(92vw, 380px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px 26px 22px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

.join-card h1 {
  margin: 0;
  font-size: 30px;
  letter-spacing: 0.5px;
}

.join-card .sub {
  margin: 2px 0 22px;
  color: var(--muted);
  font-size: 13px;
}

.join-card label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin: 14px 0 6px;
}

.join-card label.check {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 16px 0 4px;
  color: var(--text);
  cursor: pointer;
}

.join-card input[type="text"] {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text);
  font-size: 15px;
  outline: none;
}

.join-card input[type="text"]:focus {
  border-color: var(--accent);
}

#join-btn {
  width: 100%;
  margin-top: 20px;
  padding: 13px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: filter 0.15s;
}

#join-btn:hover { filter: brightness(1.08); }
#join-btn:disabled { opacity: 0.6; cursor: default; }

.hint {
  margin: 16px 0 0;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.6;
}

.error {
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--danger);
}

/* ---------- Stage ---------- */
#stage { position: fixed; inset: 0; }

#floor {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: pointer;
}

/* ---------- Video tiles ---------- */
#videos {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  z-index: 10;
}

.vtile {
  position: relative;
  width: 220px;
  aspect-ratio: 16 / 10;
  background: #000;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.vtile.screen { width: 300px; }

.vtile video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #000;
}

.vtile.screen video { object-fit: contain; }

.vtile .cap {
  position: absolute;
  left: 8px;
  bottom: 6px;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
}

.vtile.self video { transform: scaleX(-1); }
.vtile.self.screen video { transform: none; }

/* ---------- Toolbar ---------- */
#toolbar {
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 10px 16px;
  background: rgba(26, 33, 48, 0.92);
  border: 1px solid var(--line);
  border-radius: 14px;
  backdrop-filter: blur(8px);
  z-index: 20;
}

#toolbar .me {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  padding-right: 16px;
  border-right: 1px solid var(--line);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

#toolbar .tools {
  display: flex;
  align-items: center;
  gap: 10px;
}

.tool {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 60px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel-2);
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.tool .lbl { font-size: 11px; color: var(--muted); }
.tool:hover { border-color: var(--accent); }
.tool.active { background: var(--good); border-color: var(--good); }
.tool.active .lbl { color: #eafff7; }
.tool.danger.active { background: var(--danger); border-color: var(--danger); }
.tool.off { opacity: 0.75; }

.count {
  font-size: 13px;
  color: var(--muted);
  padding-left: 8px;
}

/* ---------- Banner + status ---------- */
.banner {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(79, 124, 255, 0.16);
  border: 1px solid var(--accent);
  color: #cfe0ff;
  font-size: 14px;
  font-weight: 600;
  z-index: 15;
}

.status {
  position: absolute;
  left: 12px;
  bottom: 14px;
  font-size: 12px;
  color: var(--muted);
  z-index: 15;
}

.status.warn { color: var(--warn); }
.status.err { color: var(--danger); }