/* =========================================================
   TOPICS SHOWCASE / SLIDER
   ========================================================= */

.topics-showcase {
  position: relative;
}

/* =========================================================
   1. SLIDER SHELL
   ========================================================= */

.topics-slider {
  position: relative;
  min-height: 680px;
  overflow: hidden;
  border: 1px solid rgba(31, 98, 142, 0.25);
  border-radius: 8px;
  background:
    radial-gradient(circle at 20% 30%, rgba(11, 92, 171, 0.25), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(15, 122, 92, 0.22), transparent 45%),
    linear-gradient(100deg,
      #0b5cab 0%,
      #0f7a5c 60%,
      #06382b 100%) !important;
}

.topics-slider__viewport,
.topics-slider__track {
  position: relative;
  min-height: inherit;
}

/* =========================================================
   2. INTRO PANEL
   ========================================================= */

.topics-slider__intro {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  z-index: 5;
  width: min(42%, 520px);
  pointer-events: none;
}

.topics-slider__intro-inner {
  padding: 1.25rem 1.25rem 1.1rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.04));
  backdrop-filter: blur(16px);
  box-shadow:
    0 18px 44px rgba(0, 0, 0, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.topics-slider__kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
  padding: 0.5rem 0.78rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.topics-slider__title {
  margin: 0;
  color: #fff;
  font-size: clamp(1.75rem, 2vw, 2.45rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.topics-slider__intro-copy {
  max-width: 42ch;
  margin: 0.8rem 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.98rem;
  line-height: 1.65;
}

/* =========================================================
   3. SLIDES
   ========================================================= */

.topics-slide {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(360px, 0.8fr);
  align-items: stretch;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(7%);
  transition:
    opacity 0.7s ease,
    transform 0.8s cubic-bezier(0.22, 0.7, 0.2, 1),
    visibility 0s linear 0.8s;
}

.topics-slide.is-active {
  z-index: 2;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(0);
  transition:
    opacity 0.7s ease,
    transform 0.8s cubic-bezier(0.22, 0.7, 0.2, 1),
    visibility 0s linear 0s;
}

.topics-slide__media {
  position: relative;
  min-height: 640px;
  background:
    linear-gradient(135deg, rgba(31, 98, 142, 0.14), rgba(0, 0, 0, 0.2)),
    var(--slide-image) center / cover no-repeat;
  transform: scale(1.08);
  transition: transform 6s ease;
}

.topics-slide.is-active .topics-slide__media {
  transform: scale(1);
}

.topics-slide__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(90deg,
      rgba(31, 98, 142, 0.12) 0%,
      rgba(31, 98, 142, 0.24) 30%,
      rgba(7, 24, 32, 0.75) 60%,
      rgba(7, 24, 32, 0.95) 100%);
}

/* =========================================================
   4. MEDIA COLLAGE + EXPANDED IMAGE
   ========================================================= */

.topics-slide__media--multi {
  position: relative;
  display: block;
  min-height: 640px;
  overflow: hidden;
  padding: 2rem;
}

.topics-slide__media--multi::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  /*background: linear-gradient(90deg,
      rgba(0, 0, 0, 0) 0%,
      rgba(31, 98, 142, 0.12) 65%,
      rgba(117, 189, 212, 0.3) 78%,
      rgba(7, 24, 32, 0.75) 90%,
      rgba(7, 24, 32, 0.95) 100%);*/
}

/* Image cards */
.topics-slide__image {
  position: absolute;
  overflow: hidden;
  background: #111;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  box-shadow:
    0 18px 40px rgba(0, 0, 0, 0.35),
    0 6px 18px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transform-origin: center center;
  opacity: 1;
  transition:
    top 0.45s cubic-bezier(0.22, 0.7, 0.2, 1),
    right 0.45s cubic-bezier(0.22, 0.7, 0.2, 1),
    bottom 0.45s cubic-bezier(0.22, 0.7, 0.2, 1),
    left 0.45s cubic-bezier(0.22, 0.7, 0.2, 1),
    width 0.45s cubic-bezier(0.22, 0.7, 0.2, 1),
    height 0.45s cubic-bezier(0.22, 0.7, 0.2, 1),
    transform 0.45s cubic-bezier(0.22, 0.7, 0.2, 1),
    border-radius 0.35s ease,
    opacity 0.28s ease,
    box-shadow 0.35s ease;
}

.topics-slide__image:hover {
  box-shadow:
    0 24px 48px rgba(0, 0, 0, 0.42),
    0 8px 24px rgba(0, 0, 0, 0.24);
}

.topics-slide__image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: pointer;
  transition: transform 0.45s cubic-bezier(0.22, 0.7, 0.2, 1);
}

/* Collage positions */
.topics-slide__image:nth-child(1) {
  top: 12%;
  left: 6%;
  z-index: 1;
  width: 54%;
  height: 72%;
  transform: rotate(-6deg) scale(1);
}

.topics-slide__image:nth-child(2) {
  right: 8%;
  bottom: 10%;
  z-index: 2;
  width: 50%;
  height: 68%;
  transform: rotate(5deg) scale(1);
}

/* Expanded state */
.topics-slide__media--multi.is-expanded {
  padding: 0;
}

.topics-slide__media--multi.is-expanded .topics-slide__image.is-expanded {
  inset: 0;
  z-index: 4;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
  right: auto;
  bottom: auto;
  border-radius: 0;
  box-shadow: none;
  transform: rotate(0deg) scale(1);
  pointer-events: none;
}

.topics-slide__media--multi.is-expanded .topics-slide__image.is-expanded img {
  transform: scale(1.02);
}

.topics-slide__media--multi.is-expanded .topics-slide__image:not(.is-expanded) {
  opacity: 0;
  pointer-events: none;
  transform: scale(0.96);
}

/* Close button */
.topics-slide__close {
  position: absolute;
  top: 0.75rem;
  left: calc(57% - 52px);
  z-index: 50;
  display: block;
  width: 42px;
  height: 42px;
  padding: 0;
  margin: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(7, 24, 32, 0.82);
  color: #fff;
  font-size: 0;
  line-height: 0;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.28);
  cursor: pointer;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.9);
  appearance: none;
  -webkit-appearance: none;
  transition:
    opacity 0.25s ease,
    transform 0.25s ease,
    visibility 0s linear 0.25s,
    background 0.2s ease;
}

.topics-slide__close::before,
.topics-slide__close::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
  pointer-events: none;
  transform-origin: center;
}

.topics-slide__close::before {
  transform: translate(-50%, -50%) rotate(45deg);
}

.topics-slide__close::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.topics-slide__close:hover {
  background: rgba(7, 24, 32, 0.95);
}

.topics-slide__media--multi.is-expanded+.topics-slide__close {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
  pointer-events: auto;
  transition:
    opacity 0.25s ease,
    transform 0.25s ease,
    visibility 0s linear 0s;
}

/* =========================================================
   5. SLIDE CONTENT
   ========================================================= */

.topics-slide__content {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: min(43%, 520px);
  height: 100%;
  padding: 7.8rem 3rem 6rem 3.5rem;
  color: #fff;
}

.topics-slide__eyebrow {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 0.9rem;
  padding: 0.5rem 0.8rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #1a6fc2, #1aa37a);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.topics-slide h3 {
  margin: 0;
  color: #fff;
  font-size: clamp(1.4rem, 3.7vw, 2.5rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
  text-transform: capitalize;
}

.topics-slide__summary {
  margin: 0.65rem 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.9rem;
  line-height: 1.75;
  white-space: pre-line;
}

.topics-slide__summary-text {
  display: inline;
}

.topics-slide__summary-toggle {
  display: none;
}

.summary-break {
  display: block;
  height: 0.65rem;
}

.topics-slide__list {
  display: grid;
  gap: 0.9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.topics-slide__list li {
  position: relative;
  padding-left: 1.35rem;
  color: rgba(255, 255, 255, 0.92);
  line-height: 1.6;
}

.topics-slide__list li::before {
  content: "";
  position: absolute;
  top: 0.6rem;
  left: 0;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: linear-gradient(135deg, #75bdd4, #1f628e);
  box-shadow: 0 0 0 5px rgba(31, 98, 142, 0.15);
}

/* =========================================================
   6. NAVIGATION
   ========================================================= */

.topics-slider__nav {
  position: absolute;
  right: 2rem;
  bottom: 2rem;
  left: 2rem;
  z-index: 6;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  pointer-events: none;
  transform: translateY(18px);
  transition:
    opacity 0.45s ease,
    transform 0.6s ease;
  transition-delay: 0.5s;
}

.topics-slider__arrow,
.topics-slider__controls {
  pointer-events: auto;
}

.topics-slider__arrow {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border: 0;
  border-radius: 50%;
  background: rgba(31, 98, 142, 0.25);
  color: #fff;
  backdrop-filter: blur(10px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.18);
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.topics-slider__arrow:hover {
  transform: translateY(-2px);
  background: rgba(31, 98, 142, 0.4);
}

.topics-slider__controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.9rem;
  border-radius: 999px;
  background: rgba(14, 47, 71, 0.7);
  backdrop-filter: blur(10px);
}

.topics-slider__dots {
  display: flex;
  flex: 0 1 auto;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  backdrop-filter: blur(10px);
}

.topics-slider__dot {
  width: 11px;
  height: 11px;
  padding: 2px;
  box-sizing: content-box;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  transition:
    width 0.2s ease,
    background 0.2s ease,
    transform 0.2s ease;
}

.topics-slider__dot.is-active {
  width: 34px;
  background: linear-gradient(135deg, #ffffff, #75bdd4);
}

.topics-slider__pause {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 50%;
  background: rgba(31, 98, 142, 0.3);
  color: #fff;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.topics-slider__pause:hover {
  transform: translateY(-1px);
  background: rgba(31, 98, 142, 0.5);
}

.topics-slider__arrow:focus-visible,
.topics-slider__dot:focus-visible,
.topics-slider__pause:focus-visible,
.topics-slide__close:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

/* =========================================================
   7. CONTENT ENTRANCE ANIMATIONS
   ========================================================= */

.topics-slider__intro-inner,
.topics-slide__eyebrow,
.topics-slide h3,
.topics-slide__summary,
.topics-slide__list li,
.topics-slider__nav {
  opacity: 0;
  will-change: transform, opacity;
}

.topics-slider__intro-inner {
  transform: translateY(24px) scale(0.96);
  transition:
    opacity 0.7s ease,
    transform 0.8s cubic-bezier(0.22, 0.7, 0.2, 1);
}

.topics-slide__eyebrow {
  transform: translateY(20px);
  transition:
    opacity 0.45s ease,
    transform 0.6s cubic-bezier(0.22, 0.7, 0.2, 1);
}

.topics-slide h3 {
  transform: translateY(36px);
  transition:
    opacity 0.6s ease,
    transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.15);
}

.topics-slide__summary {
  transform: translateY(28px);
  transition:
    opacity 0.55s ease,
    transform 0.75s cubic-bezier(0.22, 0.7, 0.2, 1);
}

.topics-slide__list li {
  transform: translateX(24px);
  transition:
    opacity 0.45s ease,
    transform 0.65s cubic-bezier(0.22, 0.7, 0.2, 1);
}

.topics-slider .topics-slider__intro-inner,
.topics-slide.is-active .topics-slide__eyebrow,
.topics-slide.is-active h3,
.topics-slide.is-active .topics-slide__summary,
.topics-slide.is-active .topics-slide__list li,
.topics-slider .topics-slider__nav {
  opacity: 1;
  transform: none;
}

.topics-slide.is-active .topics-slide__eyebrow {
  transition-delay: 0.18s;
}

.topics-slide.is-active h3 {
  transition-delay: 0.28s;
}

.topics-slide.is-active .topics-slide__summary {
  transition-delay: 0.42s;
}

.topics-slide.is-active .topics-slide__list li:nth-child(1) {
  transition-delay: 0.54s;
}

.topics-slide.is-active .topics-slide__list li:nth-child(2) {
  transition-delay: 0.64s;
}

.topics-slide.is-active .topics-slide__list li:nth-child(3) {
  transition-delay: 0.74s;
}

.topics-slide.is-active .topics-slide__list li:nth-child(4) {
  transition-delay: 0.84s;
}

/* =========================================================
   8. RESPONSIVE
   ========================================================= */

@media (max-width: 1100px) {
  .topics-slider__intro {
    width: min(50%, 520px);
  }

  .topics-slide__content {
    width: min(44%, 540px);
    padding-right: 2rem;
  }
}

@media (max-width: 980px) {
  .topics-slider {
    min-height: 860px;
  }

  .topics-slider__viewport,
  .topics-slider__track,
  .topics-slide__media {
    min-height: 860px;
  }

  .topics-slide,
  .topics-slide.is-active {
    display: block;
  }

  .topics-slider__intro {
    top: 1rem;
    right: 1rem;
    left: 1rem;
    width: auto;
  }

  .topics-slider__intro-inner {
    padding: 1rem;
    border-radius: 18px;
  }

  .topics-slider__title {
    font-size: clamp(1.55rem, 5vw, 2.2rem);
  }

  .topics-slide__overlay {
    background: linear-gradient(180deg,
        rgba(31, 98, 142, 0.14) 0%,
        rgba(31, 98, 142, 0.24) 28%,
        rgba(0, 0, 0, 0.78) 58%,
        rgba(0, 0, 0, 0.97) 100%);
  }

  .topics-slide__content {
    top: auto;
    right: 1rem;
    bottom: 3.4rem;
    left: 1rem;
    width: auto;
    height: auto;
    padding: 0;
  }

  .topics-slide h3 {
    max-width: 20ch;
    font-size: clamp(1.9rem, 8vw, 3rem);
  }

  .topics-slide__summary {
    max-width: 100%;
    font-size: 0.92rem;
  }

  .topics-slider__nav {
    right: 1rem;
    bottom: 1rem;
    left: 1rem;
  }

  .topics-slide__content {
    padding: 2rem 1.25rem;
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.65) 55%, rgba(0, 0, 0, 0.92) 100%);
  }

  .topics-slide__content {
    pointer-events: none;
  }

  .topics-slide__content a,
  .topics-slide__content button {
    pointer-events: auto;
  }
}

@media (max-width: 768px) {

  .topics-slider,
  .topics-slider__viewport,
  .topics-slider__track,
  .topics-slide__media {
    min-height: 720px !important;
  }

  .topics-slide h3 {
    max-width: 26ch;
    font-size: 1.8rem;
  }

  .topics-slide__media--multi::after {
    background: linear-gradient(180deg,
        rgba(0, 0, 0, 0.2) 0%,
        rgba(0, 0, 0, 0.55) 40%,
        rgba(0, 0, 0, 0.85) 70%,
        rgba(0, 0, 0, 0.98) 100%);
  }

  .topics-slide__content {
    padding: 2rem 1.25rem;
    border-radius: 16px;
    background: linear-gradient(180deg,
        rgba(0, 0, 0, 0) 0%,
        rgba(0, 0, 0, 0.65) 55%,
        rgba(0, 0, 0, 0.92) 100%);
  }

  .topics-slide__eyebrow {
    padding: 0.45rem 0.75rem;
    border: none;
    color: #fff;
    font-size: 0.7rem;
    letter-spacing: 0.06em;
    background: linear-gradient(135deg, #1f628e, #75bdd4);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
  }
}

@media (max-width: 640px) {
  .topics-slider {
    min-height: 920px;
    border-radius: 22px;
  }

  .topics-slider__viewport,
  .topics-slider__track,
  .topics-slide__media {
    min-height: 920px;
  }

  .topics-slider__kicker {
    font-size: 0.72rem;
  }

  .topics-slider__intro-copy {
    font-size: 0.93rem;
  }

  .topics-slider__arrow {
    width: 46px;
    height: 46px;
  }

  .topics-slider__dots {
    flex: 1;
    overflow: auto;
  }

  .topics-slide__list {
    gap: 0.75rem;
  }

  .topics-slide__summary {
    pointer-events: auto;
  }

  .topics-slide__summary-text {
    display: -webkit-inline-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 5;
    overflow: hidden;
    vertical-align: bottom;
  }

  .topics-slide.is-summary-expanded .topics-slide__summary-text {
    display: inline;
    -webkit-line-clamp: unset;
    overflow: visible;
  }

  .topics-slide__summary-toggle {
    display: inline;
    margin-left: 0.35rem;
    padding: 0;
    border: 0;
    background: transparent;
    color: #75bdd4;
    font-size: inherit;
    font-weight: 700;
    line-height: inherit;
    cursor: pointer;
    vertical-align: bottom;
    pointer-events: auto;
  }

  .topics-slide__summary-toggle:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 3px;
    border-radius: 4px;
  }

  /*smoother scrolling on iOS */
  .topics-slide__summary {
    -webkit-overflow-scrolling: touch;
  }
}

@media (max-width: 480px) {

  .topics-slider,
  .topics-slider__viewport,
  .topics-slider__track,
  .topics-slide__media {
    min-height: 660px !important;
  }

  .topics-slide h3 {
    max-width: 36ch;
    font-size: 1.6rem;
  }

  .topics-slide__summary {
    font-size: 0.85rem;
  }

  .topics-slide__eyebrow {
    display: none;
  }

  .topics-slide__list li {
    font-size: 0.85rem;
  }
}

@media (max-width: 440px) {
  .topics-slide.is-summary-expanded .topics-slide__summary {
    display: block;
    max-height: 160px;
    /* adjust as needed */
    overflow-y: auto;
    padding-right: 0.5rem;
    -webkit-overflow-scrolling: touch;
  }

  .topics-slide.is-summary-expanded .topics-slide__summary {
    display: block;
    max-height: 160px;
    overflow-y: auto;
    padding-right: 0.5rem;
    -webkit-overflow-scrolling: touch;
    pointer-events: auto;
    touch-action: pan-y;
  }
}

@media (max-width: 400px) {
  .topics-slider__nav {
    right: 0.75rem;
    bottom: 0.75rem;
    left: 0.75rem;
    gap: 0.6rem;
    align-items: center;
  }

  .topics-slider__arrow {
    width: 40px;
    height: 40px;
    flex: 0 0 40px;
  }

  .topics-slider__controls {
    flex: 1 1 auto;
    min-width: 0;
    gap: 0.35rem;
    padding: 0.45rem 0.6rem;
  }

  .topics-slider__dots {
    flex: 1 1 auto;
    min-width: 0;
    gap: 0.45rem;
    padding: 0.35rem 0.5rem;
    overflow-x: auto;
    overflow-y: hidden;
    justify-content: flex-start;
    scrollbar-width: none;
  }

  .topics-slider__dots::-webkit-scrollbar {
    display: none;
  }

  .topics-slider__dot {
    width: 10px;
    height: 10px;
    flex: 0 0 auto;
  }

  .topics-slider__dot.is-active {
    width: 24px;
  }

  .topics-slider__pause {
    width: 32px;
    height: 32px;
    flex: 0 0 32px;
  }
}

/* =========================================================
   9. REDUCED MOTION
   ========================================================= */

@media (prefers-reduced-motion: reduce) {

  .topics-slide,
  .topics-slide__media,
  .topics-slide__image,
  .topics-slide__image img,
  .topics-slide__close,
  .topics-slider__arrow,
  .topics-slider__dot,
  .topics-slider__pause,
  .topics-slider__intro-inner,
  .topics-slide__eyebrow,
  .topics-slide h3,
  .topics-slide__summary,
  .topics-slide__list li,
  .topics-slider__nav {
    transition: none !important;
  }
}