/* UI Components: Buttons, Cards, Grids, Popups, Accordions */

.btn {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  padding: 0.8rem 2rem;
  border-radius: var(--radius-full);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 4px 16px rgba(255, 90, 0, 0.3);
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::after {
  content: '';
  position: absolute;
  top: 0; left: -100%; width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transition: none;
  z-index: -1;
}

.btn:hover, .btn:focus-visible {
  transform: translateY(-4px) scale(1.02);
  background: var(--color-primary-light);
  box-shadow: 0 10px 25px rgba(255, 90, 0, 0.5);
  color: #fff;
  outline: none;
}

.btn:hover::after {
  left: 200%;
  transition: all 0.8s ease-in-out;
}

.btn-small {
  padding: 0.6rem 1.5rem;
  font-size: 0.95rem;
}

/* Grids */
.grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  width: 100%;
}

/* Cards */
.card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.5s ease;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at top right, rgba(255,255,255,0.06), transparent 50%);
  pointer-events: none;
  border-radius: inherit;
}

.card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 15px rgba(255, 90, 0, 0.2);
  border-color: rgba(255, 90, 0, 0.3);
}

.card-img-top {
  width: 100%;
  max-width: 200px;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal);
}

.card:hover .card-img-top {
  transform: scale(1.03);
}

.event-img {
  max-width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  background: var(--color-bg-base);
}

.card .btn,
.card .read-more-btn {
  margin-top: auto;
}

.card-title {
  font-size: 1.3rem;
  color: var(--color-text-main);
  margin-bottom: 1rem;
}

.card-text {
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

/* Gallery Photo */
.gallery-photo {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
  box-shadow: var(--shadow-sm);
}

.gallery-photo:hover {
  transform: scale(1.05) rotate(-1deg);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

/* Accordion (FAQ) */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 800px;
  margin: 0 auto;
}

.accordion-item {
  background: var(--color-bg-surface);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.accordion-item:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

.accordion-item.accordion-open {
  background: var(--color-bg-surface-elevated);
  border-color: rgba(255, 90, 0, 0.3);
}

.accordion-header {
  padding: 1.2rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--color-text-main);
}

.accordion-icon {
  transition: transform var(--transition-normal);
  color: var(--color-primary);
}

.accordion-item.accordion-open .accordion-icon {
  transform: rotate(180deg);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal), padding var(--transition-normal);
  padding: 0 1.5rem;
  color: var(--color-text-muted);
  text-align: left;
}

.accordion-item.accordion-open .accordion-body {
  padding: 0 1.5rem 1.2rem 1.5rem;
  max-height: 1000px;
}

/* Popup / Modal */
.popup-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(10, 11, 16, 0.9);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.popup-overlay.active {
  opacity: 1;
  visibility: visible;
}

.popup-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  transform: scale(0.9);
  transition: transform var(--transition-normal);
}

.popup-overlay.active .popup-content {
  transform: scale(1);
}

.popup-img {
  max-width: 100%;
  max-height: 80vh;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--color-primary);
}

.popup-close {
  position: absolute;
  top: -2rem;
  right: -2rem;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.popup-close:hover {
  color: var(--color-primary);
}

.popup-desc {
  margin-top: 1rem;
  font-size: 1.1rem;
  color: #fff;
  text-align: center;
}

/* Expandable Text */
.expandable-text {
  max-height: 4.5rem;
  overflow: hidden;
  transition: max-height var(--transition-slow);
  position: relative;
}

.expandable-text::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2rem;
  background: linear-gradient(to bottom, transparent, var(--color-bg-surface));
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.expandable-text.expanded {
  max-height: 1000px;
}

.expandable-text.expanded::after {
  opacity: 0;
}

.read-more-btn {
  color: var(--color-primary);
  font-weight: 600;
  margin-top: 0.5rem;
  cursor: pointer;
  display: inline-block;
}

.read-more-btn:hover {
  text-decoration: underline;
}

/* Carousels */
.carousel-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.carousel-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--glass-bg);
  border: var(--glass-border);
  color: var(--color-primary);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.carousel-btn:hover {
  background: var(--color-primary);
  color: #fff;
  transform: scale(1.1);
}

.carousel-indicator {
  position: absolute;
  bottom: -2rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-text-muted);
}