/* =========================================================
   Observer Homepage Topic Slider v3
   - 長標題、長摘要完整顯示
   - 圖片顯示框最大 988 × 430 px
   - 圖片比例錯誤時置中裁切
   ========================================================= */

.obs-slider {
  --obs-accent: #a91f24;
  --obs-text: #20242a;
  --obs-muted: #60666e;
  --obs-bg: #f4f4f4;
  --obs-white: #ffffff;
  --obs-dot: #b9b9b9;
  --obs-shadow: 0 14px 34px rgba(0, 0, 0, 0.12);
  --obs-content-width: 420px;
  --obs-image-width: 988px;
  --obs-image-height: 430px;

  position: relative;
  width: 100%;
  max-width: calc(var(--obs-content-width) + var(--obs-image-width));
  margin: 0 auto;
  color: var(--obs-text);
  font-family: "Noto Sans TC", "Microsoft JhengHei", sans-serif;
}

.obs-slider *,
.obs-slider *::before,
.obs-slider *::after {
  box-sizing: border-box;
}

.obs-slider__viewport {
  position: relative;
  overflow: hidden;
  background: var(--obs-bg);
  box-shadow: var(--obs-shadow);
}

.obs-slider__track {
  position: relative;
  min-height: var(--obs-image-height);
}

.obs-slider__slide {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns:
    minmax(320px, var(--obs-content-width))
    minmax(0, var(--obs-image-width));
  width: 100%;
  min-height: var(--obs-image-height);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(24px);
  transition:
    opacity 0.45s ease,
    transform 0.45s ease,
    visibility 0.45s ease;
}

.obs-slider__slide.is-active {
  position: relative;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(0);
}

.obs-slider__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  min-height: var(--obs-image-height);
  padding: 30px 42px;
  overflow: visible;
  background: var(--obs-bg);
}

.obs-slider__eyebrow {
  position: relative;
  align-self: flex-start;
  margin: 0 0 17px;
  padding-bottom: 8px;
  color: #1f2328;
  font-size: clamp(17px, 1.45vw, 22px);
  font-weight: 800;
  letter-spacing: 0.22em;
  line-height: 1.3;
}

.obs-slider__eyebrow::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 82px;
  height: 5px;
  background: var(--obs-accent);
}

.obs-slider__title {
  display: block;
  margin: 0 0 13px;
  overflow: visible;
  color: var(--obs-text);
  font-size: clamp(22px, 1.85vw, 31px);
  font-weight: 800;
  line-height: 1.4;
  overflow-wrap: anywhere;
  word-break: normal;
}

.obs-slider__excerpt {
  display: block;
  margin: 0 0 15px;
  overflow: visible;
  color: var(--obs-muted);
  font-size: clamp(15px, 1.15vw, 18px);
  line-height: 1.72;
  overflow-wrap: anywhere;
}

.obs-slider__more {
  align-self: flex-start;
  flex: 0 0 auto;
  padding: 7px 0 5px;
  border-bottom: 2px solid transparent;
  color: var(--obs-text);
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  transition:
    color 0.2s ease,
    border-color 0.2s ease,
    transform 0.2s ease;
}

.obs-slider__more::before {
  content: "……";
  margin-right: 2px;
}

.obs-slider__more:hover,
.obs-slider__more:focus-visible {
  border-color: var(--obs-accent);
  color: var(--obs-accent);
  transform: translateX(4px);
}

.obs-slider__media {
  position: relative;
  display: block;
  align-self: start;
  width: 100%;
  max-width: var(--obs-image-width);
  height: var(--obs-image-height);
  min-width: 0;
  overflow: hidden;
  background: #d8d8d8;
}

.obs-slider__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center center;
  transition: transform 0.6s ease;
}

.obs-slider__media:hover img {
  transform: scale(1.025);
}

.obs-slider__arrow {
  position: absolute;
  top: calc(var(--obs-image-height) / 2);
  z-index: 5;
  display: grid;
  width: 44px;
  height: 44px;
  padding: 0;
  place-items: center;
  border: 0;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.5);
  color: var(--obs-white);
  cursor: pointer;
  transform: translateY(-50%);
  transition:
    background 0.2s ease,
    transform 0.2s ease;
}

.obs-slider__arrow:hover,
.obs-slider__arrow:focus-visible {
  background: var(--obs-accent);
  transform: translateY(-50%) scale(1.06);
}

.obs-slider__arrow span {
  display: block;
  margin-top: -4px;
  font-family: Arial, sans-serif;
  font-size: 40px;
  font-weight: 300;
  line-height: 1;
}

.obs-slider__arrow--prev {
  left: calc(min(var(--obs-content-width), 32%) + 12px);
}

.obs-slider__arrow--next {
  right: 14px;
}

.obs-slider__dots {
  display: flex;
  min-height: 30px;
  justify-content: center;
  gap: 11px;
  padding: 15px 10px 4px;
}

.obs-slider__dot {
  width: 19px;
  height: 9px;
  padding: 0;
  border: 0;
  background: var(--obs-dot);
  cursor: pointer;
  transition:
    width 0.25s ease,
    background 0.25s ease;
}

.obs-slider__dot.is-active {
  width: 28px;
  background: #333333;
}

.obs-slider__dot:hover,
.obs-slider__dot:focus-visible {
  background: var(--obs-accent);
}

.obs-slider button:focus-visible,
.obs-slider a:focus-visible {
  outline: 3px solid rgba(169, 31, 36, 0.35);
  outline-offset: 3px;
}

.obs-slider .sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.pf-slider-wrapper:has(.obs-slider) > .pf-slider-pagination,
.pf-slider-wrapper:has(.obs-slider) .pf-slider-pagination {
  display: none !important;
}

@media (max-width: 1050px) {
  .obs-slider__slide {
    grid-template-columns: minmax(300px, 38%) minmax(0, 62%);
  }

  .obs-slider__content {
    padding: 27px 34px;
  }

  .obs-slider__title {
    font-size: clamp(21px, 2.35vw, 28px);
  }

  .obs-slider__excerpt {
    font-size: 16px;
    line-height: 1.65;
  }

  .obs-slider__arrow--prev {
    left: calc(38% + 10px);
  }
}

@media (max-width: 760px) {
  .obs-slider__track {
    min-height: 0;
  }

  .obs-slider__slide {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    min-height: 0;
  }

  .obs-slider__media {
    grid-row: 1;
    width: 100%;
    max-width: none;
    height: auto;
    aspect-ratio: 988 / 430;
  }

  .obs-slider__content {
    grid-row: 2;
    justify-content: flex-start;
    min-height: 0;
    padding: 27px 28px 32px;
  }

  .obs-slider__title {
    font-size: clamp(22px, 5.2vw, 29px);
  }

  .obs-slider__excerpt {
    font-size: 16px;
    line-height: 1.7;
  }

  .obs-slider__arrow {
    top: calc((100vw * 430 / 988) / 2);
  }

  .obs-slider__arrow--prev {
    left: 10px;
  }

  .obs-slider__arrow--next {
    right: 10px;
  }
}

@media (max-width: 560px) {
  .obs-slider__content {
    padding: 23px 20px 28px;
  }

  .obs-slider__eyebrow {
    margin-bottom: 15px;
    font-size: 16px;
  }

  .obs-slider__eyebrow::after {
    width: 70px;
    height: 4px;
  }

  .obs-slider__title {
    margin-bottom: 12px;
    font-size: 22px;
    line-height: 1.45;
  }

  .obs-slider__excerpt {
    margin-bottom: 16px;
    font-size: 15.5px;
    line-height: 1.68;
  }

  .obs-slider__arrow {
    width: 40px;
    height: 40px;
  }

  .obs-slider__arrow span {
    font-size: 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .obs-slider__slide,
  .obs-slider__media img,
  .obs-slider__arrow,
  .obs-slider__more,
  .obs-slider__dot {
    transition: none !important;
  }
}