body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #151515;
  color: #ffffff;
  min-height: 100vh;
}

.container {
  text-align: center;
  width: 90%;
  max-width: 500px;
  margin: 0 auto;
  padding-top: 40px;
}

h1 {
  margin-bottom: 10px;
  font-size: 2rem;
}

.subtitle {
  margin-bottom: 25px;
  color: #e0e0e0;
}

.talk-btn {
  width: 230px;
  height: 230px;
  border-radius: 50%;
  border: none;
  font-size: 2rem;
  font-weight: bold;
  cursor: pointer;
  background: #e62129;
  color: white;
  box-shadow: 0 0 30px rgba(230, 33, 41, 0.35);
}

.talk-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.status {
  margin-top: 20px;
  padding: 12px;
  background: #23314a;
  border-radius: 10px;
  color: #ffffff;
}

.login-box {
  max-width: 380px;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-form input {
  padding: 14px;
  border-radius: 10px;
  border: none;
  font-size: 1rem;
}

.btn-secondary {
  padding: 14px 18px;
  border-radius: 10px;
  border: none;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  background: #1f6b8f;
  color: white;
}

.btn-link {
  display: inline-block;
  padding: 12px 18px;
  background: #334155;
  color: white;
  text-decoration: none;
  border-radius: 10px;
}

.hidden {
  display: none;
}

/* Receptor */
.receiver-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  padding: 16px 28px;
  min-height: 100vh;
  box-sizing: border-box;
  background: #101010;
}

.receiver-left {
  border: 1px solid rgba(255,255,255,0.18);
  padding: 18px;
  text-align: center;
  background: #181818;
}

.receiver-right {
  display: flex;
  align-items: stretch;
}

.calls-panel {
  width: 100%;
  background: #f7f7f7;
  border-radius: 34px;
  border: 3px solid #3daa39;
  padding: 24px 18px;
  box-sizing: border-box;
  min-height: 360px;
  box-shadow: 0 0 0 2px rgba(0,0,0,0.25) inset;
}

.calls-title {
  color: #111;
  font-size: 1.2rem;
  font-weight: bold;
  margin-bottom: 18px;
  text-align: center;
}

.calls-list.empty {
  color: #222;
  min-height: 260px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.5rem;
  font-weight: 600;
}

.call-card {
  background: #ffffff;
  color: #111;
  border-radius: 14px;
  padding: 12px;
  margin-bottom: 12px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.12);
  border: 2px solid #d6d6d6;
}

.call-card.waiting {
  border-left: 8px solid #f0b400;
}

.call-card.active {
  border-left: 8px solid #23a34a;
}

.call-card-id {
  font-weight: bold;
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.call-card-status {
  margin-bottom: 10px;
  font-weight: 600;
}

.call-card-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.mini-btn {
  padding: 10px 12px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
  background: #0f6e94;
  color: white;
}

.mini-btn.reject {
  background: #6b7280;
}

@media (max-width: 900px) {
  .receiver-layout {
    grid-template-columns: 1fr;
  }
}
.center-btn {
  display: block;
  margin: 24px auto 0 auto;
}