/* Custom CSS - Cung Văn Hóa Lao Động Cơ Sở Bình Trưng */

@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@300;400;500;600;700;800&display=swap');

:root {
  --primary: #0b5ed7;
  --primary-dark: #0a4aa8;
  --accent: #dc2626;
  --success: #059669;
  --surface: #ffffff;
  --bg-soft: #f8fafc;
}

body {
  font-family: 'Be Vietnam Pro', sans-serif;
  color: #1e293b;
  background-color: #f8fafc;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

/* Glassmorphism */
.glass-nav {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.glass-card {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(226, 232, 240, 0.8);
}

/* Card Hover Elevation */
.course-card {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.course-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
}

/* Pulse animation for Live Hotline */
@keyframes pulse-subtle {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.08);
    opacity: 0.85;
  }
}

.animate-pulse-subtle {
  animation: pulse-subtle 2s infinite ease-in-out;
}

/* Badges */
.badge-hot {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  box-shadow: 0 2px 8px rgba(220, 38, 38, 0.35);
}

.badge-union {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.35);
}

.badge-free {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.35);
}

/* Modal Backdrop & Content Animation */
.modal-backdrop {
  transition: opacity 0.25s ease-in-out;
}

.modal-content-box {
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease-in-out;
}

/* Image aspect ratio helper */
.aspect-card {
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

/* Custom Scrollbar for Gallery & Filter */
.no-scrollbar::-webkit-scrollbar {
  display: none;
}
.no-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* Modal thumbnail active border */
.modal-thumb-active {
  border-color: #0b5ed7 !important;
  box-shadow: 0 0 0 2px rgba(11, 94, 215, 0.35);
}

/* FAQ Accordion Transition */
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, opacity 0.25s ease-out;
  opacity: 0;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  opacity: 1;
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
}

/* Back to top button */
#back-to-top {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
  transform: translateY(10px);
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Mobile Action Bar Padding offset */
@media (max-width: 768px) {
  body {
    padding-bottom: 76px;
  }
}