/**
 * Yao Carousel CSS
 * WordPress optimized version of the HTML template
 *
 * @package YaoCarousel
 * @since 1.0.0
 */

/* ==========================================================================
   CSS Variables for Responsive Design
   ========================================================================== */
:root {
  --yao-desktop-center-width: 310px;
  --yao-desktop-center-height: 498px;
  --yao-desktop-side-width: 228px;
  --yao-desktop-side-height: 366px;
  --yao-tablet-center-width: 248px;
  --yao-tablet-center-height: 398px;
  --yao-mobile-center-width: 220px;
  --yao-mobile-center-height: 353px;
  --yao-transition-duration: 0.5s;
  --yao-border-radius: 8px;
  --yao-shadow-color: rgba(0, 0, 0, 0.2);
  --yao-gradient-start: rgba(218, 194, 163, 0);
  --yao-gradient-end: #dac2a3;
}

/* ==========================================================================
   Main Container - Namespace Protection
   ========================================================================== */
[id^="yao_carousel-container"] {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  margin: 0 auto;
  width: 100%;
  max-width: 900px;
  padding: 0 10px;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

/* ==========================================================================
   Embla Container
   ========================================================================== */
[id^="yao_carousel-container"] .embla {
  width: calc(var(--yao-desktop-center-width) + var(--yao-desktop-side-width) + var(--yao-desktop-side-width));
  max-width: calc(100% - 20px);
  height: var(--yao-desktop-center-height);
  position: relative;
  margin: 0 auto;
  box-sizing: border-box;
  /* 確保不顯示額外的卡片邊緣 */
  overflow: hidden;
}

[id^="yao_carousel-container"] .embla__viewport {
  overflow: hidden;
  width: 100%;
  height: 100%;
}

[id^="yao_carousel-container"] .embla__container {
  display: flex;
  align-items: center;
  height: 100%;
  /* 直接添加CSS過渡 - 最可靠的方法 */
  transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

/* ==========================================================================
   Slide Base Styles
   ========================================================================== */
[id^="yao_carousel-container"] .embla__slide {
  position: relative;
  overflow: hidden;
  border-radius: var(--yao-border-radius);
  flex: 0 0 var(--yao-desktop-side-width);
  height: var(--yao-desktop-side-height);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 8px;
  border-radius: 20px;
  /* Only transition visual properties, not layout */
  transition: filter var(--yao-transition-duration) ease-in-out;
}

/* Center slide (active) */
[id^="yao_carousel-container"] .embla__slide--center {
  flex: 0 0 var(--yao-desktop-center-width) !important;
  height: var(--yao-desktop-center-height) !important;
  filter: none;
  box-shadow: 0 8px 30px var(--yao-shadow-color);
  border-radius: 20px;
}

/* ==========================================================================
   Image Styles
   ========================================================================== */
[id^="yao_carousel-container"] .embla__slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: filter var(--yao-transition-duration) ease-in-out;
  border-radius: var(--yao-border-radius);
}

/* Center slide images - full coverage */
[id^="yao_carousel-container"] .embla__slide--center img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--yao-border-radius);
  z-index: 0;
}

/* ==========================================================================
   Slide Links
   ========================================================================== */
[id^="yao_carousel-container"] .yao_slide-link {
  display: block;
  position: relative;
  width: 100%;
  height: 100%;
  text-decoration: none;
  color: inherit;
  transition: opacity 0.3s ease;
}

[id^="yao_carousel-container"] .yao_slide-link:hover {
  text-decoration: none;
  color: inherit;
}

/* Subtle hover effect that won't interfere with loop */
[id^="yao_carousel-container"] .embla__slide--center .yao_slide-link:hover {
  opacity: 0.95;
}

/* ==========================================================================
   Content Overlay
   ========================================================================== */
[id^="yao_carousel-container"] .yao_item-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 15px;
  color: white;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--yao-transition-duration) ease-in-out,
              visibility var(--yao-transition-duration) ease-in-out;
  font-family: sans-serif;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

[id^="yao_carousel-container"] .yao_item-content h3 {
  margin: 0;
  color: #fff;
  text-align: center;
  font-feature-settings: "case" on;
  font-family: "Noto Sans TC", Arial, sans-serif;
  font-size: 18px;
  font-style: normal;
  font-weight: 400;
  line-height: 160%;
  letter-spacing: 1.8px;
}

[id^="yao_carousel-container"] .yao_item-content p {
  margin: 0 0 8px 0;
  font-size: 0.9em;
  text-align: center;
  order: -1;
}

/* Links inside content should not have additional styling since whole slide is now a link */

/* ==========================================================================
   Center Slide Effects
   ========================================================================== */
[id^="yao_carousel-container"] .embla__slide--center::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, var(--yao-gradient-start) 50%, var(--yao-gradient-end) 100%);
  border-radius: var(--yao-border-radius);
  pointer-events: none;
  z-index: 2;
}

[id^="yao_carousel-container"] .embla__slide--center .yao_item-content {
  opacity: 1;
  visibility: visible;
  z-index: 3;
  position: absolute;
  bottom: 0;
}

/* ==========================================================================
   Non-Active Slides (Grayscale Effect)
   ========================================================================== */
[id^="yao_carousel-container"] .embla__slide:not(.embla__slide--center) {
  filter: grayscale(100%) brightness(0.8);
}

[id^="yao_carousel-container"] .embla__slide:not(.embla__slide--center) .yao_item-content {
  opacity: 0;
}

/* ==========================================================================
   Navigation Buttons
   ========================================================================== */
[id^="yao_carousel-container"] .embla__button {
  background: transparent !important;
  color: transparent;
  border: none !important;
  box-shadow: none !important;
  border-radius: 0;
  width: 50px;
  height: 50px;
  cursor: pointer;
  z-index: 10;
  font-size: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: none;
  flex-shrink: 0;
  margin: 0 10px;
  padding: 0;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  outline: none !important;
  -webkit-tap-highlight-color: transparent !important;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

[id^="yao_carousel-container"] .embla__button:focus,
[id^="yao_carousel-container"] .embla__button:focus-visible {
  outline: none !important;
  box-shadow: none !important;
  background: transparent !important;
}

[id^="yao_carousel-container"] .embla__button:active {
  outline: none !important;
  box-shadow: none !important;
  background: transparent !important;
  transform: translateY(-50%) !important;
}

[id^="yao_carousel-container"] .embla__button:hover {
  background: transparent !important;
}

/* Remove any browser default button styling */
[id^="yao_carousel-container"] .embla__button::-moz-focus-inner {
  border: 0 !important;
  padding: 0 !important;
}

[id^="yao_carousel-container"] .embla__button--prev {
  left: 10px;
  z-index: 15;
}

[id^="yao_carousel-container"] .embla__button--next {
  right: 10px;
  z-index: 15;
}

[id^="yao_carousel-container"] .embla__button img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: none;
  transition: transform 0.3s ease;
  pointer-events: none;
}

[id^="yao_carousel-container"] .embla__button:hover img {
  transform: scale(1.1);
}

[id^="yao_carousel-container"] .embla__button:disabled {
  opacity: 0.3;
  pointer-events: none;
}

/* ==========================================================================
   Accessibility Features
   ========================================================================== */
[id^="yao_carousel-container"] .embla__button[aria-label] {
  /* Screen reader support */
}

[id^="yao_carousel-container"] .embla__slide[aria-current="true"] {
  /* Active slide indicator for screen readers */
}

/* ==========================================================================
   Loading States
   ========================================================================== */
[id^="yao_carousel-container"] .yao-carousel-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 400px;
  font-size: 16px;
  color: #666;
}

[id^="yao_carousel-container"] .yao-carousel-fallback {
  text-align: center;
  padding: 40px 20px;
  background: #f8f9fa;
  border-radius: var(--yao-border-radius);
  border: 1px solid #dee2e6;
  color: #6c757d;
}

/* ==========================================================================
   Responsive Design - Large Desktop (≥1280px) - External Arrow System
   ========================================================================== */
@media (min-width: 1280px) {
  /* 讓輪播內的箭頭透明但保持功能 */
  [id^="yao_carousel-container"] .embla__button--prev,
  [id^="yao_carousel-container"] .embla__button--next {
    opacity: 0;
    pointer-events: auto;
  }

  /* 容器添加外部箭頭的定位 */
  [id^="yao_carousel-container"] {
    position: relative;
  }

  /* 外部箭頭基本樣式 */
  [id^="yao_carousel-container"] .yao-external-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    cursor: pointer;
    z-index: 15;
    transition: transform 0.3s ease;
  }

  /* 外部箭頭 - 左 */
  [id^="yao_carousel-container"] .yao-external-arrow--prev {
    left: -70px;
  }

  /* 外部箭頭 - 右 */
  [id^="yao_carousel-container"] .yao-external-arrow--next {
    right: -70px;
  }

  /* 外部箭頭懸停效果 */
  [id^="yao_carousel-container"] .yao-external-arrow:hover {
    transform: translateY(-50%) scale(1.1);
  }

  /* 外部箭頭圖片樣式 */
  [id^="yao_carousel-container"] .yao-external-arrow img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
    filter: none;
    transition: transform 0.3s ease;
    pointer-events: none;
  }
}

/* ==========================================================================
   Responsive Design - Tablet (769px - 1279px)
   ========================================================================== */
@media (min-width: 769px) and (max-width: 1279px) {
  [id^="yao_carousel-container"] .embla__button--prev {
    left: -60px;
  }

  [id^="yao_carousel-container"] .embla__button--next {
    right: -60px;
  }
}

/* ==========================================================================
   Responsive Design - Small Desktop/Large Tablet (≤900px)
   ========================================================================== */
@media (max-width: 900px) {
  [id^="yao_carousel-container"] .embla__button--prev {
    left: -50px;
  }

  [id^="yao_carousel-container"] .embla__button--next {
    right: -50px;
  }
}

/* ==========================================================================
   Responsive Design - Tablet (≤768px)
   ========================================================================== */
@media (max-width: 768px) {
  [id^="yao_carousel-container"] {
    max-width: 100%;
    padding: 0;
  }

  [id^="yao_carousel-container"] .embla {
    width: calc(280px + 160px + 160px);
    max-width: 600px;
    height: 350px;
    margin: 0 auto;
  }

  [id^="yao_carousel-container"] .embla__slide {
    flex: 0 0 160px;
    height: 300px;
    padding: 0 10px;
  }

  [id^="yao_carousel-container"] .embla__slide--center {
    flex: 0 0 280px !important;
    height: 350px !important;
  }

  [id^="yao_carousel-container"] .embla__button--prev {
    left: 10px;
    width: 40px;
    height: 40px;
    z-index: 15;
  }

  [id^="yao_carousel-container"] .embla__button--next {
    right: 10px;
    width: 40px;
    height: 40px;
    z-index: 15;
  }

  [id^="yao_carousel-container"] .yao_item-content h3 {
    font-size: 16px;
    letter-spacing: 1.2px;
  }

  [id^="yao_carousel-container"] .yao_item-content p {
    font-size: 0.8em;
  }
}

/* ==========================================================================
   Responsive Design - Mobile (≤480px)
   ========================================================================== */
@media (max-width: 480px) {
  [id^="yao_carousel-container"] {
    padding: 0;
  }

  [id^="yao_carousel-container"] .embla {
    width: 100%;
    max-width: 100%;
    height: 320px;
    margin: 0 auto;
  }

  [id^="yao_carousel-container"] .embla__slide {
    flex: 0 0 140px;
    height: 280px;
    padding: 0 7.5px;
  }

  [id^="yao_carousel-container"] .embla__slide--center {
    flex: 0 0 240px !important;
    height: 320px !important;
  }

  [id^="yao_carousel-container"] .embla__button--prev {
    left: 10px;
    width: 35px;
    height: 35px;
    z-index: 15;
  }

  [id^="yao_carousel-container"] .embla__button--next {
    right: 10px;
    width: 35px;
    height: 35px;
    z-index: 15;
  }

  [id^="yao_carousel-container"] .yao_item-content {
    padding: 10px;
  }

  [id^="yao_carousel-container"] .yao_item-content h3 {
    font-size: 14px;
    letter-spacing: 1px;
    line-height: 140%;
  }

  [id^="yao_carousel-container"] .yao_item-content p {
    font-size: 0.75em;
    margin-bottom: 5px;
  }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */
@media print {
  [id^="yao_carousel-container"] .embla__button {
    display: none;
  }

  [id^="yao_carousel-container"] .embla__slide:not(.embla__slide--center) {
    display: none;
  }

  [id^="yao_carousel-container"] .embla__slide--center .yao_item-content {
    background: rgba(0, 0, 0, 0.7);
    color: white;
  }
}

/* ==========================================================================
   High Contrast Mode Support
   ========================================================================== */
@media (prefers-contrast: high) {
  [id^="yao_carousel-container"] .embla__slide--center::after {
    background: linear-gradient(180deg, transparent 50%, rgba(0, 0, 0, 0.8) 100%);
  }

  [id^="yao_carousel-container"] .yao_item-content {
    background: rgba(0, 0, 0, 0.9);
  }
}

/* ==========================================================================
   Reduced Motion Support
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  [id^="yao_carousel-container"] .embla__slide,
  [id^="yao_carousel-container"] .yao_item-content,
  [id^="yao_carousel-container"] .embla__button img {
    transition: none;
  }
}

/* ==========================================================================
   Dark Mode Support
   ========================================================================== */
@media (prefers-color-scheme: dark) {
  [id^="yao_carousel-container"] .yao-carousel-fallback {
    background: #2d3748;
    border-color: #4a5568;
    color: #e2e8f0;
  }
}