.dmt-contact-dock {
  position: fixed;
  z-index: 999;
  right: 18px;
  bottom: 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.dmt-contact-button {
  display: flex;
  min-width: 178px;
  height: 58px;
  padding: 7px 15px 7px 8px;
  align-items: center;
  gap: 11px;
  border: 1px solid rgba(255, 255, 255, .45);
  border-radius: 17px;
  color: #fff;
  text-decoration: none;
  box-shadow: 0 12px 32px rgba(12, 38, 30, .2);
  transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
}

.dmt-contact-button:hover {
  transform: translateY(-3px);
  color: #fff;
  filter: brightness(1.05);
  box-shadow: 0 16px 38px rgba(12, 38, 30, .28);
}

.dmt-contact-phone {
  background: linear-gradient(135deg, #267653, #174b3b);
}

.dmt-contact-zalo {
  background: linear-gradient(135deg, #1789ee, #0868cf);
}

.dmt-contact-icon {
  position: relative;
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  place-items: center;
  border-radius: 13px;
  background: rgba(255, 255, 255, .18);
}

.dmt-contact-phone .dmt-contact-icon::before {
  position: absolute;
  inset: -4px;
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: 16px;
  content: "";
  animation: dmt-contact-pulse 2.2s ease-out infinite;
}

.dmt-contact-icon svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.dmt-zalo-icon {
  color: #0965c4;
  background: #fff;
  font-size: 11px;
  font-weight: 850;
  letter-spacing: -.03em;
}

.dmt-contact-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.dmt-contact-copy small {
  margin-bottom: 5px;
  color: rgba(255, 255, 255, .76);
  font-size: 9px;
  font-weight: 750;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.dmt-contact-copy strong {
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
}

@keyframes dmt-contact-pulse {
  0% { transform: scale(.9); opacity: .8; }
  75%, 100% { transform: scale(1.25); opacity: 0; }
}

@media (max-width: 580px) {
  .dmt-contact-dock {
    right: 12px;
    bottom: max(12px, env(safe-area-inset-bottom));
    left: 12px;
    flex-direction: row;
    align-items: stretch;
    gap: 8px;
  }

  .dmt-contact-button {
    width: 50%;
    min-width: 0;
    height: 52px;
    padding: 6px 10px 6px 6px;
    justify-content: center;
    border-radius: 15px;
  }

  .dmt-contact-icon {
    width: 38px;
    height: 38px;
    flex-basis: 38px;
    border-radius: 11px;
  }

  .dmt-contact-copy small {
    display: none;
  }

  .dmt-contact-copy strong {
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .dmt-contact-phone .dmt-contact-icon::before {
    animation: none;
  }
}

@media print {
  .dmt-contact-dock { display: none !important; }
}