@font-face {
  font-family: 'Inter';
  src: url('{{ 'Inter.woff2' | asset_url }}') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter'
  , -apple-system
  , BlinkMacSystemFont
  , 'Segoe UI'
  , Roboto
  , Arial
  , sans-serif;
  line-height: 1.6;
  color: #333;
  background: #fff;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}
/* ===== STICKY CONTACT ===== */
.sticky-contact {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 99999;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ===== BUTTON ===== */
.contact-btn {
  position: relative;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
  animation: pulse 1.8s infinite;
}

.contact-btn img {
  width: 32px;
  height: 32px;
}

/* ===== COLORS ===== */
.contact-btn.zalo {
  background: #0084ff;
}

.contact-btn.call {
  background: #28a745;
}

/* ===== HOVER SHAKE ===== */
.contact-btn:hover {
  animation: shake 0.5s;
}

/* ===== PULSE EFFECT ===== */
.contact-btn::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.4;
  animation: pulse-ring 1.8s infinite;
  z-index: -1;
}

.contact-btn.zalo {
  color: #0084ff;
}
.contact-btn.call {
  color: #28a745;
}

/* ===== KEYFRAMES ===== */
@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.08);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes pulse-ring {
  0% {
    transform: scale(1);
    opacity: 0.6;
  }
  100% {
    transform: scale(1.8);
    opacity: 0;
  }
}

@keyframes shake {
  0% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-4px);
  }
  50% {
    transform: translateX(4px);
  }
  75% {
    transform: translateX(-4px);
  }
  100% {
    transform: translateX(0);
  }
}

/* ===== MOBILE ===== */
@media (max-width: 768px) {
  .sticky-contact {
    right: 12px;
    bottom: 90px;
  }

  .contact-btn {
    width: 48px;
    height: 48px;
  }

  .contact-btn img {
    width: 26px;
    height: 26px;
  }
}