/* ============================================================
   SPEL HERO SLIDER — Full-screen cinematic slide system
   Pure CSS transitions + JS-controlled state
   ============================================================ */

/* --- Container ------------------------------------------------ */
.hero-slider {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 620px;
  overflow: hidden;
  background: #040911;
}

/* --- Individual Slides --------------------------------------- */
.hero-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.9s cubic-bezier(0.4, 0, 0.2, 1),
    visibility 0.9s;
  z-index: 1;
}

.hero-slide.is-active {
  opacity: 1;
  visibility: visible;
  z-index: 2;
}

.hero-slide.is-leaving {
  opacity: 0;
  visibility: visible;
  z-index: 3; /* sit above incoming during exit */
  transition:
    opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    visibility 0.7s;
}

/* --- Slide Backgrounds --------------------------------------- */
.slide-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.06);
  transition: transform 8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}

.hero-slide.is-active .slide-bg {
  transform: scale(1.0);
}

/* Slide-specific gradient overlays */
.hero-slide:nth-child(1) .slide-bg { background-color: #050d1c; }
.hero-slide:nth-child(2) .slide-bg { background-color: #071220; }
.hero-slide:nth-child(3) .slide-bg { background-color: #060e18; }
.hero-slide:nth-child(4) .slide-bg { background-color: #040c14; }
.hero-slide:nth-child(5) .slide-bg { background-color: #07101c; }

/* Dark cinematic overlay */
.slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(4, 9, 17, 0.88) 0%,
    rgba(4, 9, 17, 0.60) 50%,
    rgba(4, 9, 17, 0.30) 100%
  );
  z-index: 1;
}

/* Grid texture overlay */
.slide-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(74, 143, 212, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 143, 212, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 2;
}

/* --- Slide Content ------------------------------------------- */
.slide-content {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 5vw, var(--space-16));
  padding-block: clamp(var(--space-20), 12vh, var(--space-32));
}

/* Content animation on entry */
.slide-content .slide-eyebrow,
.slide-content .slide-title,
.slide-content .slide-desc,
.slide-content .slide-actions {
  transform: translateY(28px);
  opacity: 0;
  transition:
    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    opacity   0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-slide.is-active .slide-content .slide-eyebrow  { transform: translateY(0); opacity: 1; transition-delay: 0.15s; }
.hero-slide.is-active .slide-content .slide-title     { transform: translateY(0); opacity: 1; transition-delay: 0.28s; }
.hero-slide.is-active .slide-content .slide-desc      { transform: translateY(0); opacity: 1; transition-delay: 0.40s; }
.hero-slide.is-active .slide-content .slide-actions   { transform: translateY(0); opacity: 1; transition-delay: 0.52s; }

/* Eyebrow */
.slide-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-cta);
  margin-bottom: var(--space-5);
}

.slide-eyebrow::before {
  content: '';
  display: block;
  width: 28px;
  height: 2px;
  background: var(--color-cta);
  border-radius: 1px;
  flex-shrink: 0;
}

/* Title */
.slide-title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 1.0;
  margin-bottom: var(--space-6);
  max-width: 18ch;
}

.slide-title .accent {
  color: #4a8fd4;
  display: block;
}

.slide-title .accent-gold {
  color: var(--color-cta);
  display: block;
}

/* Description */
.slide-desc {
  font-size: var(--text-lg);
  color: rgba(200, 214, 232, 0.85);
  max-width: 54ch;
  line-height: 1.65;
  margin-bottom: var(--space-10);
}

/* Actions */
.slide-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
}

/* --- Slide Accent Visual (right side) ----------------------- */
.slide-visual {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 48%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
  pointer-events: none;
  opacity: 0;
  transition: opacity 1.1s cubic-bezier(0.16, 1, 0.3, 1) 0.3s;
}

.hero-slide.is-active .slide-visual {
  opacity: 1;
}

.slide-visual svg {
  width: min(480px, 90%);
  height: auto;
  filter: drop-shadow(0 0 60px rgba(74, 143, 212, 0.15));
}

/* --- Progress Bar -------------------------------------------- */
.slider-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(255,255,255,0.08);
  z-index: 20;
}

.slider-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-cta), #4a8fd4);
  width: 0%;
  transition: width linear;
  transform-origin: left;
}

/* --- Dots Navigation ----------------------------------------- */
.slider-dots {
  position: absolute;
  bottom: var(--space-10);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-3);
  z-index: 20;
}

.slider-dot {
  position: relative;
  width: 32px;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  border-radius: 2px;
  cursor: pointer;
  padding: 0;
  transition: background var(--transition-fast);
  overflow: hidden;
}

.slider-dot::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background: var(--color-cta);
  border-radius: 2px;
  transition: width linear;
}

.slider-dot.is-active {
  background: rgba(255, 255, 255, 0.1);
  width: 52px;
}

.slider-dot.is-active::after {
  width: var(--dot-fill, 0%);
  transition: width var(--dot-duration, 6000ms) linear;
}

/* --- Arrow Navigation --------------------------------------- */
.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 20;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(4, 9, 17, 0.5);
  border: 1px solid rgba(74, 143, 212, 0.25);
  border-radius: 50%;
  color: rgba(200, 214, 232, 0.8);
  cursor: pointer;
  transition:
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    color var(--transition-interactive),
    transform var(--transition-interactive);
  backdrop-filter: blur(8px);
}

.slider-arrow:hover {
  background: rgba(30, 95, 168, 0.3);
  border-color: rgba(74, 143, 212, 0.6);
  color: #fff;
  transform: translateY(-50%) scale(1.08);
}

.slider-arrow--prev { left: var(--space-6); }
.slider-arrow--next { right: var(--space-6); }

/* --- Slide Counter ------------------------------------------ */
.slider-counter {
  position: absolute;
  bottom: var(--space-10);
  right: var(--space-8);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: rgba(200, 214, 232, 0.5);
  letter-spacing: 0.08em;
  z-index: 20;
}

.slider-counter-current {
  font-size: var(--text-lg);
  font-weight: 700;
  color: rgba(200, 214, 232, 0.85);
}

/* --- Pause indicator ---------------------------------------- */
.slider-pause {
  position: absolute;
  top: var(--space-6);
  right: var(--space-8);
  z-index: 20;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(4, 9, 17, 0.5);
  border: 1px solid rgba(74, 143, 212, 0.2);
  border-radius: var(--radius-full);
  color: rgba(200, 214, 232, 0.6);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all var(--transition-fast);
  backdrop-filter: blur(8px);
}

.slider-pause:hover {
  color: #fff;
  border-color: rgba(74, 143, 212, 0.5);
}

/* --- Swipe hint --------------------------------------------- */
.slider-swipe-hint {
  position: absolute;
  bottom: var(--space-10);
  left: var(--space-8);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: rgba(200, 214, 232, 0.35);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  z-index: 20;
  pointer-events: none;
  animation: swipe-hint-fade 4s ease 2s forwards;
}

@keyframes swipe-hint-fade {
  0%   { opacity: 1; }
  80%  { opacity: 1; }
  100% { opacity: 0; }
}

/* --- Mobile -------------------------------------------------- */
@media (max-width: 768px) {
  .hero-slider { height: 100svh; min-height: 560px; }
  .slide-visual { display: none; }
  .slide-overlay {
    background: linear-gradient(
      180deg,
      rgba(4, 9, 17, 0.75) 0%,
      rgba(4, 9, 17, 0.55) 100%
    );
  }
  .slider-arrow--prev { left: var(--space-3); width: 40px; height: 40px; }
  .slider-arrow--next { right: var(--space-3); width: 40px; height: 40px; }
  .slider-counter { display: none; }
  .slider-pause { top: auto; bottom: var(--space-20); right: var(--space-4); }
  .slider-swipe-hint { left: 50%; transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-slide,
  .slide-bg,
  .slide-content .slide-eyebrow,
  .slide-content .slide-title,
  .slide-content .slide-desc,
  .slide-content .slide-actions,
  .slide-visual { transition: none !important; animation: none !important; }
}