.float-contact {
  position: fixed;
  bottom: 96px;
  right: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  z-index: 300;
  align-items: flex-end;
}

.float-btn {
  position: relative;
  width: 54px; height: 54px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  box-shadow: 0 6px 24px rgba(0,0,0,.22);
  transition: transform .25s cubic-bezier(.34,1.56,.64,1), box-shadow .25s;
  animation: float-bob 3.5s ease-in-out infinite;
}
.float-btn:hover {
  transform: scale(1.15) translateY(-3px);
  box-shadow: 0 14px 36px rgba(0,0,0,.28);
}
.float-btn:active { transform: scale(.95); }

.zalo-btn {
  background: #fff;
  border: 2.5px solid #0068FF;
  animation-delay: .4s;
}
.call-btn {
  background: linear-gradient(135deg, #2ecc71, #27ae60);
  animation-delay: 0s;
}

@keyframes float-bob {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-7px); }
}
.float-btn:hover { animation: none; }

/* Ripple rings */
.float-ripple {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  animation: ripple-out 2s ease-out infinite;
  pointer-events: none;
}
.zalo-btn .float-ripple  { border: 2px solid rgba(0,104,255,.5); }
.call-btn .float-ripple  { border: 2px solid rgba(46,204,113,.5); }
.float-ripple.delay1     { animation-delay: .9s; }

@keyframes ripple-out {
  0%   { transform: scale(1); opacity: .8; }
  100% { transform: scale(2.1); opacity: 0; }
}

/* Tooltip label */
.float-label {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%) translateX(6px);
  background: var(--brown);
  color: #fff;
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .06em;
  white-space: nowrap;
  padding: 5px 11px;
  border-radius: 8px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .22s, transform .22s;
}
.float-label::after {
  content: '';
  position: absolute;
  left: 100%; top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-left-color: var(--brown);
}
.float-btn:hover .float-label {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

/* Phone number badge */
.float-phone-badge {
  background: var(--brown);
  color: #fff;
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .05em;
  padding: 5px 12px;
  border-radius: 50px;
  margin-right: 4px;
  opacity: 0;
  transform: translateX(10px);
  transition: opacity .3s, transform .3s;
  white-space: nowrap;
  pointer-events: none;
  align-self: center;
}
.float-contact:hover .float-phone-badge {
  opacity: 1;
  transform: translateX(0);
}