:root {
  --bg: #0f1626;
  --panel: #16203a;
  --panel-2: #1d2b4d;
  --accent: #2979ff;
  --text: #e6edf7;
  --muted: #9fb0c8;
  --danger: #ff5252;
  --ok: #69f0ae;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  overflow: hidden;
}

.hidden { display: none !important; }

/* ── Beitreten ─────────────────────────────────────────── */
.join {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.join-card {
  background: var(--panel);
  padding: 32px;
  border-radius: 14px;
  width: 360px;
  max-width: 92vw;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}
.join-card h1 { margin: 0 0 4px; color: var(--accent); }
.join-card .sub { margin: 0 0 20px; color: var(--muted); font-size: 14px; }
.join-card label {
  display: block;
  margin-bottom: 14px;
  font-size: 13px;
  color: var(--muted);
}
.join-card input {
  width: 100%;
  margin-top: 5px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--panel-2);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
}
.join-card button {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: white;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 6px;
}
.join-card button:hover { filter: brightness(1.1); }
.hint { color: var(--danger); font-size: 13px; min-height: 18px; margin: 10px 0 0; }

/* ── Konferenz ─────────────────────────────────────────── */
.call { height: 100vh; display: flex; flex-direction: column; }
.bar {
  display: flex;
  align-items: center;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--panel-2);
}
.room-label { color: var(--muted); font-size: 14px; }
.room-label b { color: var(--text); }
.spacer { flex: 1; }
.ghost {
  background: transparent;
  border: 1px solid var(--panel-2);
  color: var(--text);
  padding: 7px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
}
.ghost:hover { background: var(--panel-2); }

.grid {
  flex: 1;
  display: grid;
  gap: 10px;
  padding: 12px;
  overflow: auto;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-content: start;
}
.tile {
  position: relative;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 2px solid var(--panel-2);
}
.tile.speaking { border-color: var(--ok); }
.tile video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #000;
}
.tile .label {
  position: absolute;
  left: 8px;
  bottom: 8px;
  background: rgba(0, 0, 0, 0.6);
  padding: 3px 9px;
  border-radius: 6px;
  font-size: 13px;
}
.tile .muted-icon {
  position: absolute;
  right: 8px;
  bottom: 8px;
  background: rgba(0, 0, 0, 0.6);
  padding: 3px 7px;
  border-radius: 6px;
  font-size: 13px;
  display: none;
}
.tile.mic-off .muted-icon { display: block; }
.tile .avatar {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 46px;
  color: var(--muted);
  background: var(--panel);
}
.tile.has-video .avatar { display: none; }

.controls {
  display: flex;
  justify-content: center;
  gap: 12px;
  padding: 14px;
  background: var(--panel);
  border-top: 1px solid var(--panel-2);
}
.ctrl {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  background: var(--panel-2);
  color: var(--text);
  border: none;
  border-radius: 10px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 20px;
  min-width: 72px;
}
.ctrl span { font-size: 11px; color: var(--muted); }
.ctrl:hover { filter: brightness(1.15); }
.ctrl.off { background: #3a1f1f; }
.ctrl.off span { color: var(--danger); }
.ctrl.active { background: #1f3a2a; }
.ctrl.active span { color: var(--ok); }
.ctrl.leave { background: var(--danger); }
.ctrl.leave span { color: #fff; }