/* Nút liên hệ nổi — Zalo + Gọi */
.flt-social{
  position:fixed;bottom:20px;right:14px;z-index:999;
  display:flex;flex-direction:column;align-items:center;gap:14px;
}

.flt-btn{
  position:relative;width:52px;height:52px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  text-decoration:none;color:#fff;
  box-shadow:0 4px 16px rgba(0,0,0,.28);
  transition:transform .2s,box-shadow .2s;
}
.flt-btn:hover{transform:scale(1.06);box-shadow:0 6px 22px rgba(0,0,0,.35)}
.flt-btn i{font-size:24px;line-height:1;position:relative;z-index:2}

.flt-ring,.flt-ring-2{
  position:absolute;inset:0;border-radius:50%;pointer-events:none;z-index:1;
  animation:fltPulse 2s ease-out infinite;
}
.flt-ring-2{animation-delay:1s}
@keyframes fltPulse{
  0%{transform:scale(1);opacity:.75}
  100%{transform:scale(1.55);opacity:0}
}

/* Zalo — bong bóng + chữ Chat Zalo (giống mẫu) */
.flt-zalo-wrap{
  display:flex;flex-direction:column;align-items:center;gap:4px;
  text-decoration:none;color:#2FC3F3;
  transition:transform .2s;
}
.flt-zalo-wrap:hover{transform:scale(1.05)}
.flt-zalo-bubble{
  position:relative;width:52px;height:52px;
  background:#2FC3F3;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 16px rgba(47,195,243,.45);
}
.flt-zalo-bubble::after{
  content:'';position:absolute;left:6px;bottom:-5px;
  width:0;height:0;
  border-left:7px solid transparent;
  border-right:7px solid transparent;
  border-top:9px solid #2FC3F3;
  transform:rotate(28deg);
}
.flt-zalo-bubble img{width:34px;height:34px;display:block}
.flt-zalo-text{
  font-family:Arial,Helvetica,sans-serif;
  font-size:19px;font-weight:800;color:#fff;
  letter-spacing:-.3px;line-height:1;
}
.flt-zalo-label{
  font-family:'Times New Roman',Times,serif;
  font-size:17px;font-weight:600;color:#2FC3F3;
  line-height:1.2;white-space:nowrap;
}

.flt-call{background:#E53935}
.flt-call .flt-ring{border:2px solid rgba(229,57,53,.55)}

.form-note{margin-top:12px;text-align:center}
.form-note a.form-phone{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-d,'Oswald',sans-serif);
  font-size:19px;font-weight:700;color:var(--gold,#F5A623);
  text-decoration:none;letter-spacing:.5px;
  transition:color .2s;
}
.form-note a.form-phone:hover{color:#e8950f}
.form-note a.form-phone i{font-size:18px}

.logo .brand{font-size:clamp(11px,3.2vw,15px)!important;letter-spacing:.4px;line-height:1.25;white-space:nowrap}

@media(max-width:767px){
  .flt-social{bottom:16px;right:10px;gap:12px}
  .flt-btn{width:48px;height:48px}
  .flt-zalo-bubble{width:48px;height:48px}
  .flt-zalo-text{font-size:18px}
  .flt-zalo-label{font-size:16px}
}