/**
 * Hero Slider - Modern Banner Carousel
 * Radiology Conference - December 18th to 20th 2026, Kanyakumari
 */

.hero-slider {
  position: relative;
  width: 100%;
  min-height: 420px;
  overflow: hidden;
}

@media (min-width: 768px) {
  .hero-slider {
    min-height: 520px;
  }
}

@media (min-width: 992px) {
  .hero-slider {
    min-height: 600px;
  }
}

.hero-slider__track {
  display: flex;
  transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  height: 100%;
}

.hero-slider__slide {
  flex: 0 0 100%;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: var(--spacing-2xl) var(--spacing-md);
}

@media (min-width: 768px) {
  .hero-slider__slide {
    min-height: 520px;
  }
}

@media (min-width: 992px) {
  .hero-slider__slide {
    min-height: 600px;
  }
}

/* Slide backgrounds - distinct gradients per slide */
.hero-slider__slide--1 {
  background: linear-gradient(135deg, #f7c637 0%, #d4a52e 50%, #c9a227 100%);
  background-size: 200% 200%;
  animation: gradientShift 15s ease infinite;
}

.hero-slider__slide--2 {
  background: linear-gradient(135deg, #d4a52e 0%, #f7c637 50%, #c9a227 100%);
  background-size: 200% 200%;
  animation: gradientShift 15s ease infinite 2s;
}

.hero-slider__slide--3 {
  background: linear-gradient(135deg, #1a237e 0%, #283593 50%, #0d1542 100%);
  background-size: 200% 200%;
  animation: gradientShift 15s ease infinite 4s;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* Overlay for depth */
.hero-slider__slide::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(255,255,255,0.08) 0%, transparent 50%);
  pointer-events: none;
}

.hero-slider__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
}

.hero-slider__title {
  font-size: clamp(1.75rem, 5vw, 3rem);
  font-weight: 800;
  color: #fff;
  margin: 0 0 var(--spacing-md);
  text-shadow: 0 2px 20px rgba(0,0,0,0.2);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.hero-slider__dates {
  font-size: clamp(1.125rem, 3vw, 1.5rem);
  font-weight: 600;
  color: rgba(255,255,255,0.98);
  margin: 0 0 var(--spacing-sm);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero-slider__venue {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: rgba(255,255,255,0.9);
  margin: 0 0 var(--spacing-lg);
  font-weight: 500;
}

.hero-slider__organizer {
  display: inline-block;
  font-size: clamp(0.9375rem, 2vw, 1.125rem);
  font-weight: 600;
  color: rgba(255,255,255,0.95);
  background: rgba(255,255,255,0.15);
  padding: var(--spacing-sm) var(--spacing-xl);
  border-radius: 50px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.25);
  margin-bottom: var(--spacing-xl);
}

.hero-slider__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-2xl);
  font-size: 1.0625rem;
  font-weight: 700;
  background: var(--color-button);
  color: #fff;
  border-radius: 50px;
  text-decoration: none;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.hero-slider__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
  background: var(--color-button-hover);
  color: #fff;
}

/* Navigation dots */
.hero-slider__dots {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--spacing-sm);
  z-index: 10;
}

.hero-slider__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  border: 2px solid rgba(255,255,255,0.6);
  cursor: pointer;
  transition: all 0.3s ease;
}

.hero-slider__dot:hover {
  background: rgba(255,255,255,0.7);
}

.hero-slider__dot.is-active {
  background: #fff;
  transform: scale(1.2);
  border-color: #fff;
}

/* Arrows */
.hero-slider__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.4);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: all 0.2s ease;
  backdrop-filter: blur(8px);
}

.hero-slider__arrow:hover {
  background: rgba(255,255,255,0.35);
  transform: translateY(-50%) scale(1.05);
}

.hero-slider__arrow--prev {
  left: var(--spacing-md);
}

.hero-slider__arrow--next {
  right: var(--spacing-md);
}

@media (max-width: 767px) {
  .hero-slider__arrow {
    width: 40px;
    height: 40px;
    font-size: 0.875rem;
  }
}

/* Mediox-style hero stats overlay */
.hero-slider__stats {
  position: absolute;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--spacing-xl);
  z-index: 5;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-slider__stat {
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.3);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  text-align: center;
}

.hero-slider__stat-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  display: block;
}

.hero-slider__stat-label {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.9);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (max-width: 767px) {
  .hero-slider__stats {
    bottom: 50px;
    gap: var(--spacing-md);
  }
  .hero-slider__stat {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  .hero-slider__stat-num {
    font-size: 1.25rem;
  }
}