/* =========================================================================
   Live call — Start / Hangup phone buttons
   ========================================================================= */

.call-btn {
  width: 62px;
  height: 62px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  margin: 0.25rem auto;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform    var(--dur-micro) var(--ease),
              box-shadow   var(--dur-micro) var(--ease),
              opacity      var(--dur-micro) var(--ease);
}
.call-btn svg { width: 24px; height: 24px; fill: white; }
.call-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.call-btn:disabled:hover { transform: none; }

/* Start — teal */
.call-btn-start {
  background: var(--teal-dark);
  box-shadow: 0 4px 20px var(--teal-glow);
}
.call-btn-start:hover:not(:disabled) {
  background: var(--teal);
  transform: scale(1.07);
  box-shadow: 0 8px 28px var(--teal-glow);
}

/* Hangup — coral. No looping pulse: a persistent throb on the end-call control
   reads as an alarm and competes with the RTA's tug-tier alert motion. */
.call-btn-hangup {
  background: var(--red);
}
.call-btn-hangup:hover:not(:disabled) { transform: scale(1.07); }