/* ========================================
   Custom CSS - Styles that Tailwind cannot handle
   (keyframes, pseudo-elements, complex selectors, JS state classes)
   ======================================== */

/* ---- Keyframe Animations ---- */
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes eventPopupFadeIn {
  from {
    opacity: 0;
    transform: scale(0.8) translateY(20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* ---- Loading Spinner ---- */
.loading-spinner {
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top: 4px solid #fff;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

.loading-message {
  animation: pulse 2s infinite;
}

/* ---- Slideshow Transitions ---- */
.slide {
  opacity: 0;
  z-index: 1;
  transition: opacity 1.5s ease-in-out;
}

.slide.active {
  opacity: 1;
  z-index: 2;
}

/* ---- Floating Header → Solid on Scroll ---- */
header.scrolled {
  position: fixed;
  top: 1.25rem;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

header.scrolled .header-logo {
  color: #374151;
}

header.scrolled .header-subtitle {
  color: #9ca3af;
}

header.scrolled .hamburger-line {
  background-color: #4b5563;
}

header.scrolled .nav-link {
  color: #4b5563;
}

header.scrolled .nav-link:hover {
  color: #111827;
}

header.scrolled .nav-book-btn {
  color: #374151;
  border-color: #d1d5db;
}

header.scrolled .nav-book-btn:hover {
  background: #374151;
  color: white;
}

/* ---- Hamburger → X (no animation) ---- */
.hamburger.active .hamburger-line {
  display: none;
}

.hamburger.active::after {
  content: "×";
  font-size: 50px;
  font-weight: 100;
  line-height: 30px;
  color: #4b5563;
}

/* ---- Mobile Nav Active State ---- */
@media (max-width: 768px) {
  .nav.active {
    display: flex !important;
    opacity: 1 !important;
    transform: scale(1) !important;
    pointer-events: auto !important;
  }
}

/* ---- Back to Top Button States ---- */
.back-to-top {
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
}

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


/* ---- Program Card nth-child Grid Positioning ---- */
.program-card:nth-child(6) {
  grid-column: 2 / 4;
}

@media (max-width: 1024px) {
  .program-card:nth-child(6) {
    grid-column: auto;
  }
}

@media (max-width: 768px) {
  .program-card:nth-child(6) {
    grid-column: auto;
  }
  .program-card:nth-child(7) {
    grid-column: 1 / -1;
  }
}

@media (max-width: 480px) {
  .program-card:nth-child(7) {
    grid-column: 1 / -1;
  }
}

/* ---- Event Popup Animation ---- */
.event-popup-content {
  animation: eventPopupFadeIn 0.5s ease-out;
}

/* ---- Card Hover Effects ---- */
.program-card:hover img,
.special-card:hover img {
  transform: scale(1.05);
}

.program-card:hover .card-overlay .plus-icon,
.special-card:hover .card-overlay .plus-icon {
  transform: scale(1.08);
}

/* ---- Modal Close Hover ---- */
.modal-close:hover {
  transform: rotate(90deg);
}

.event-popup-close:hover {
  transform: rotate(90deg);
}