/* ===== CONTACT POPUP - MODERN GLASS UI WITH STAGGERED ANIMATION ===== */

.contact-popup {
  position: fixed;
  inset: 0;
  background: rgba(5, 8, 20, 0.85);
  backdrop-filter: blur(10px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 20px;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.contact-popup .popup-card {
  position: relative;
  width: min(480px, 95vw);
  background: linear-gradient(180deg, 
    rgba(26, 31, 58, 0.98),
    rgba(15, 18, 38, 0.95));
  backdrop-filter: blur(30px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  box-shadow: 
    0 20px 60px rgba(0, 0, 0, 0.8),
    0 0 0 1px rgba(0, 217, 255, 0.1) inset,
    0 0 40px rgba(0, 217, 255, 0.2);
  color: #fff;
  padding: 32px 28px 28px;
  animation: popupSlideIn 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  max-height: 90vh;
  overflow-y: auto;
}

@keyframes popupSlideIn {
  from {
    opacity: 0;
    transform: translateY(40px) scale(0.92);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ===== CLOSE BUTTON ===== */
.popup-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 0;
  color: #fff;
  cursor: pointer;
  background: rgba(255, 59, 48, 0.15);
  backdrop-filter: blur(10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 300;
  line-height: 1;
  z-index: 10;
}

.popup-close:hover {
  background: rgba(255, 59, 48, 0.9);
  transform: rotate(90deg) scale(1.05);
  box-shadow: 0 4px 20px rgba(255, 59, 48, 0.5);
}

.popup-close:active {
  transform: rotate(90deg) scale(0.95);
}

/* ===== HEADER ===== */
.popup-header {
  text-align: center;
  margin: 0 0 32px;
  opacity: 0;
  animation: slideUpFadeIn 0.5s ease forwards;
}

@keyframes slideUpFadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.popup-header .badge {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(0, 212, 255, 0.25), rgba(122, 167, 255, 0.25));
  border: 1px solid rgba(0, 217, 255, 0.3);
  margin-bottom: 12px;
  font-weight: 700;
  color: #00d9ff;
  text-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
}

.popup-header h2 {
  font-size: 28px;
  font-weight: 800;
  margin: 0 0 10px;
  background: linear-gradient(135deg, #fff, #00d9ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 30px rgba(0, 217, 255, 0.3);
}

.popup-header .subtitle {
  opacity: 0.8;
  font-size: 14px;
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
}

/* ===== CONTACT ITEMS CONTAINER ===== */
.contact-items {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ===== CONTACT ITEM ===== */
.contact-item {
  display: flex;
  align-items: stretch;
  gap: 12px;
  opacity: 0;
  transform: translateY(30px);
}

/* Staggered animation for each item */
.contact-item:nth-child(1) {
  animation: slideUpFadeIn 0.5s ease 0.2s forwards;
}

.contact-item:nth-child(2) {
  animation: slideUpFadeIn 0.5s ease 0.35s forwards;
}

.contact-item:nth-child(3) {
  animation: slideUpFadeIn 0.5s ease 0.5s forwards;
}

.contact-item:nth-child(4) {
  animation: slideUpFadeIn 0.5s ease 0.65s forwards;
}

.contact-item:nth-child(5) {
  animation: slideUpFadeIn 0.5s ease 0.8s forwards;
}

/* ===== BUTTONS ===== */
.btn.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 24px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  min-height: 56px;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  flex: 1;
}

.btn.pill::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.btn.pill:hover::before {
  transform: translateX(100%);
}

.btn.pill:active {
  transform: scale(0.96);
}

.btn.pill i {
  font-size: 22px;
}

/* Telegram Button */
.btn.telegram {
  background: linear-gradient(135deg, #2ea6ff, #1283ff);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(18, 131, 255, 0.4);
  border-color: rgba(46, 166, 255, 0.5);
}

.btn.telegram:hover {
  background: linear-gradient(135deg, #3fb4ff, #1f8fff);
  box-shadow: 0 8px 35px rgba(18, 131, 255, 0.6);
  transform: translateY(-3px);
}

/* WhatsApp Button */
.btn.whatsapp {
  background: linear-gradient(135deg, #25D366, #128C7E);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  border-color: rgba(37, 211, 102, 0.5);
}

.btn.whatsapp:hover {
  background: linear-gradient(135deg, #2ee673, #15a084);
  box-shadow: 0 8px 35px rgba(37, 211, 102, 0.6);
  transform: translateY(-3px);
}

/* Zalo Button */
.btn.zalo {
  background: linear-gradient(135deg, #0068FF, #0052CC);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(0, 104, 255, 0.4);
  border-color: rgba(0, 104, 255, 0.5);
}

.btn.zalo:hover {
  background: linear-gradient(135deg, #1a7aff, #0060e6);
  box-shadow: 0 8px 35px rgba(0, 104, 255, 0.6);
  transform: translateY(-3px);
}

/* Discord Button */
.btn.discord {
  background: linear-gradient(135deg, #5865F2, #4752C4);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(88, 101, 242, 0.4);
  border-color: rgba(88, 101, 242, 0.5);
}

.btn.discord:hover {
  background: linear-gradient(135deg, #6875ff, #5865F2);
  box-shadow: 0 8px 35px rgba(88, 101, 242, 0.6);
  transform: translateY(-3px);
}

/* Email Button */
.btn.email {
  background: linear-gradient(135deg, #EA4335, #C5221F);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(234, 67, 53, 0.4);
  border-color: rgba(234, 67, 53, 0.5);
}

.btn.email:hover {
  background: linear-gradient(135deg, #f5564a, #d43d30);
  box-shadow: 0 8px 35px rgba(234, 67, 53, 0.6);
  transform: translateY(-3px);
}

/* Ghost/Copy Button */
.btn.ghost {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  min-width: 110px;
  flex: 0 0 auto;
}

.btn.ghost:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(0, 217, 255, 0.5);
  color: #00d9ff;
  box-shadow: 0 4px 20px rgba(0, 217, 255, 0.3);
  transform: translateY(-3px);
}

/* ===== HINT TEXT ===== */
.hint {
  text-align: center;
  opacity: 0;
  font-size: 13px;
  margin-top: 24px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
  animation: slideUpFadeIn 0.5s ease 0.95s forwards;
}

/* ===== CONTACT FAB BUTTON ===== */
.contact-fab {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, #00d9ff, #0099cc);
  border: 3px solid rgba(0, 217, 255, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 999;
  box-shadow: 
    0 4px 20px rgba(0, 217, 255, 0.5),
    0 0 0 0 rgba(0, 217, 255, 0.4);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  animation: pulse 2.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 
      0 4px 20px rgba(0, 217, 255, 0.5),
      0 0 0 0 rgba(0, 217, 255, 0.4);
  }
  50% {
    box-shadow: 
      0 8px 40px rgba(0, 217, 255, 0.8),
      0 0 0 20px rgba(0, 217, 255, 0);
  }
}

.contact-fab:hover {
  background: linear-gradient(135deg, #00eeff, #00b8e6);
  transform: scale(1.15) rotate(5deg);
  box-shadow: 0 8px 40px rgba(0, 217, 255, 0.8);
  animation: none;
}

.contact-fab:active {
  transform: scale(0.98);
}

.contact-fab i {
  font-size: 30px;
  color: white;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-3px);
  }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .contact-popup .popup-card {
    padding: 28px 20px 24px;
    border-radius: 20px;
  }
  
  .popup-header h2 {
    font-size: 24px;
  }
  
  .popup-header .subtitle {
    font-size: 13px;
  }
  
  .popup-header {
    margin-bottom: 28px;
  }
  
  .contact-items {
    gap: 14px;
  }
  
  .contact-item {
    flex-direction: column;
    gap: 10px;
  }
  
  .btn.ghost {
    min-width: auto;
  }
  
  .btn.pill {
    padding: 14px 20px;
    min-height: 52px;
    font-size: 14px;
  }
  
  .btn.pill i {
    font-size: 20px;
  }
  
  .hint {
    font-size: 12px;
    margin-top: 20px;
  }
  
  .contact-fab {
    width: 58px;
    height: 58px;
    right: 16px;
    bottom: 16px;
  }
  
  .contact-fab i {
    font-size: 26px;
  }
}

@media (max-width: 480px) {
  .contact-popup .popup-card {
    padding: 24px 18px 20px;
  }
  
  .popup-header h2 {
    font-size: 22px;
  }
  
  .popup-header {
    margin-bottom: 24px;
  }
  
  .contact-items {
    gap: 12px;
  }
  
  .btn.pill {
    padding: 13px 18px;
    min-height: 50px;
    font-size: 13px;
  }
  
  .btn.pill i {
    font-size: 19px;
  }
  
  .contact-fab {
    width: 54px;
    height: 54px;
  }
  
  .contact-fab i {
    font-size: 24px;
  }
}

/* ===== ACCESSIBILITY ===== */
.btn.pill:focus-visible,
.popup-close:focus-visible,
.contact-fab:focus-visible {
  outline: 3px solid #00d9ff;
  outline-offset: 3px;
}

/* ===== SMOOTH SCROLLBAR ===== */
.contact-popup .popup-card::-webkit-scrollbar {
  width: 8px;
}

.contact-popup .popup-card::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 10px;
}

.contact-popup .popup-card::-webkit-scrollbar-thumb {
  background: rgba(0, 217, 255, 0.5);
  border-radius: 10px;
}

.contact-popup .popup-card::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 217, 255, 0.7);
}

/* ===== PREVENT BODY SCROLL WHEN OPEN ===== */
body.contact-open {
  overflow: hidden;
}

/* ===== ADDITIONAL HOVER EFFECTS ===== */
.contact-item:hover .btn.pill:not(:hover) {
  opacity: 0.7;
  transform: scale(0.98);
}

.contact-item .btn.pill {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== GLOW EFFECT ON HOVER ===== */
.btn.pill:hover {
  filter: brightness(1.1);
}

.btn.telegram:hover {
  box-shadow: 
    0 8px 35px rgba(18, 131, 255, 0.6),
    0 0 50px rgba(18, 131, 255, 0.3);
}

.btn.whatsapp:hover {
  box-shadow: 
    0 8px 35px rgba(37, 211, 102, 0.6),
    0 0 50px rgba(37, 211, 102, 0.3);
}

.btn.zalo:hover {
  box-shadow: 
    0 8px 35px rgba(0, 104, 255, 0.6),
    0 0 50px rgba(0, 104, 255, 0.3);
}

.btn.discord:hover {
  box-shadow: 
    0 8px 35px rgba(88, 101, 242, 0.6),
    0 0 50px rgba(88, 101, 242, 0.3);
}

.btn.email:hover {
  box-shadow: 
    0 8px 35px rgba(234, 67, 53, 0.6),
    0 0 50px rgba(234, 67, 53, 0.3);
}