/* =========================================================
   SINGLE COURSE SLIDER — NETFLIX RESPONSIVE
   ---------------------------------------------------------
   ความกว้างการ์ดถูกคำนวณโดย CourseSlider_Responsive.js
   ตามพื้นที่ Browser/iframe จริง ไม่ล็อก 300px / 500px
   ========================================================= */

@font-face {
  font-family: "Prompt-Regular";
  src: url("https://thbof.com/_INNER_assets/fonts/Prompt-Regular.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Prompt-Light";
  src: url("https://thbof.com/_INNER_assets/fonts/Prompt-Light.woff2") format("woff2");
  font-style: normal;
  font-weight: 300;
  font-display: swap;
}

@font-face {
  font-family: "Prompt-Medium";
  src: url("https://thbof.com/_INNER_assets/fonts/Prompt-Medium.woff2") format("woff2");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "Prompt-Thin";
  src: url("https://thbof.com/_INNER_assets/fonts/Prompt-Thin.woff2") format("woff2");
  font-style: normal;
  font-weight: 100;
  font-display: swap;
}

:root {
  --card-width: clamp(180px, 28vw, 300px);
  --card-gap: clamp(8px, 0.85vw, 16px);
  --edge-inset: clamp(12px, 1.6vw, 30px);
  --radius: clamp(8px, 0.75vw, 12px);
  --pink: #d83f87;
  --text: #292929;
  --muted: #8a8a8a;
  --caption-text: #292929;
  --caption-muted: #666666;
  --caption-shadow: 0 1px 1px rgba(255,255,255,.18);
  --caption-scrim: transparent;
  --caption-scrim-border: transparent;

  /* Adaptive neutral labels (e.g. “ฮิตที่ INNER”). */
  --adaptive-label-bg: rgba(28,28,30,.94);
  --adaptive-label-text: #ffffff;
  --adaptive-label-border: rgba(255,255,255,.18);
  --adaptive-label-shadow: 0 3px 10px rgba(0,0,0,.24);

  /* Helps fixed-tone labels stay separated from ANY section background. */
  --label-separation-border: rgba(0,0,0,.16);
  --label-separation-shadow: 0 3px 10px rgba(0,0,0,.20);

  --skeleton-base: #e7e7e9;
  --skeleton-shine: rgba(255,255,255,.78);
  --multi-button-direction: column;

  /* Floating glass Play/Pause — intentionally quiet on wide screens. */
  --slider-control-size: 30px;
  --slider-control-offset: 9px;
  --slider-control-opacity: .78;
}

/* =========================================================
   ADAPTIVE SURFACE CONTRAST
   ---------------------------------------------------------
   CourseSlider_AutoHeight.js may set these variables from the
   ACTUAL LearnWorlds section background. These selectors remain
   as safe fallbacks and for ?theme=dark|light manual overrides.
   ========================================================= */
html[data-surface="light"] {
  --caption-text: #202124;
  --caption-muted: #55585d;
  --caption-shadow: 0 1px 1px rgba(255,255,255,.18);
  --adaptive-label-bg: rgba(28,28,30,.94);
  --adaptive-label-text: #ffffff;
  --adaptive-label-border: rgba(255,255,255,.16);
  --label-separation-border: rgba(0,0,0,.16);
  --label-separation-shadow: 0 3px 10px rgba(0,0,0,.20);
  --skeleton-base: #e7e7e9;
  --skeleton-shine: rgba(255,255,255,.78);
}

html[data-surface="dark"] {
  --caption-text: #ffffff;
  --caption-muted: #d4d6da;
  --caption-shadow: 0 1px 2px rgba(0,0,0,.50), 0 0 8px rgba(0,0,0,.18);
  --adaptive-label-bg: rgba(248,248,250,.94);
  --adaptive-label-text: #151517;
  --adaptive-label-border: rgba(0,0,0,.16);
  --label-separation-border: rgba(255,255,255,.20);
  --label-separation-shadow: 0 3px 12px rgba(0,0,0,.34);
  --skeleton-base: rgba(255,255,255,.13);
  --skeleton-shine: rgba(255,255,255,.24);
}

/* For image/gradient/unknown backgrounds: put a very light local scrim
   behind copy so contrast remains stable even when pixels vary underneath. */
html[data-surface-complex="true"] {
  --caption-scrim: rgba(18,18,20,.72);
  --caption-scrim-border: rgba(255,255,255,.10);
  --caption-text: #ffffff;
  --caption-muted: #e1e2e5;
  --caption-shadow: 0 1px 2px rgba(0,0,0,.55);
  --adaptive-label-bg: rgba(248,248,250,.95);
  --adaptive-label-text: #151517;
  --adaptive-label-border: rgba(0,0,0,.14);
  --label-separation-border: rgba(255,255,255,.22);
  --label-separation-shadow: 0 4px 14px rgba(0,0,0,.34);
}

html[data-version="BIG"] {
  --card-width: clamp(280px, 42vw, 500px);
  --multi-button-direction: row;
}

html[data-version="SMALL"] {
  --card-width: clamp(180px, 28vw, 300px);
  --multi-button-direction: column;
}

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

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  padding: 0;
  background: transparent !important;
}

body {
  overflow-x: hidden;
}

.course-slider {
  position: relative;
  width: 100%;
  padding-inline: var(--edge-inset);
  padding-bottom: 0;
  overflow: hidden;
  background: transparent !important;
}

.slider-track {
  display: flex;
  align-items: flex-start;
  gap: var(--card-gap);
  width: max-content;
  transform: translate3d(0, 0, 0);
  will-change: transform;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
  cursor: grab;
}

.slider-track.is-dragging { cursor: grabbing; }

.slide {
  flex: 0 0 var(--card-width);
  width: var(--card-width);
  min-width: 0;
  margin: 0;
  text-align: left;
  cursor: pointer;
}

.slide-inner {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.10);
  background: #eee;
}

.slide-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
  transition: filter 0.28s ease, transform 0.28s ease;
  -webkit-user-drag: none;
}

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(6px, 0.7vw, 10px);
  padding: 10px;
  border-radius: inherit;
  background: rgba(0, 0, 0, 0.50);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.28s ease, visibility 0.28s ease;
}

.overlay.has-multiple-buttons {
  flex-direction: var(--multi-button-direction);
}

@media (hover: hover) and (pointer: fine) {
  .slide:hover .slide-image { filter: brightness(70%); }
  .slide:hover .overlay {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
}

/* Mobile / touch: long-press adds .is-touch-hover so the card behaves like desktop hover. */
@media (hover: none), (pointer: coarse) {
  .slide.is-touch-hover .slide-image {
    filter: brightness(70%);
  }

  .slide.is-touch-hover .overlay {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  /* Suppress the browser's native long-press menu/callout.
     Keep touch-action on the track so vertical page scrolling and horizontal drag still work. */
  .slider-track,
  .slide,
  .slide *,
  .slide-image,
  .action-btn {
    -webkit-touch-callout: none !important;
    -webkit-user-select: none !important;
    user-select: none !important;
    -webkit-tap-highlight-color: transparent;
  }
}

.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-width: 0;
  padding: clamp(6px, 0.65vw, 10px) clamp(10px, 1.35vw, 24px);
  border-radius: 999px;
  background: #f4f4f4;
  color: var(--text);
  font: clamp(11px, 0.9vw, 16px)/1.35 "Prompt-Regular", sans-serif;
  text-decoration: none !important;
  text-shadow: none !important;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.25s ease, transform 0.25s ease;
}

.action-btn:hover {
  background: #fff;
  transform: translateY(-2px);
}

.action-btn.is-course {
  background: var(--pink);
  color: #fff;
}

.card-copy {
  min-width: 0;
  margin-top: clamp(5px, 0.65vw, 8px);
  padding: 0;
  border: 1px solid transparent;
  border-radius: 7px;
  background: transparent;
}

html[data-surface-complex="true"] .card-copy {
  padding: clamp(4px, .45vw, 7px) clamp(6px, .6vw, 10px);
  border-color: var(--caption-scrim-border);
  background: var(--caption-scrim);
  -webkit-backdrop-filter: blur(10px) saturate(120%);
  backdrop-filter: blur(10px) saturate(120%);
  box-shadow: 0 3px 12px rgba(0,0,0,.16);
}

.card-title {
  margin: 0 0 2px;
  overflow: hidden;
  color: var(--caption-text);
  font: clamp(10px, 0.84vw, 14px)/1.4 "Prompt-Regular", sans-serif;
  text-shadow: var(--caption-shadow);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-subtitle {
  margin: 0;
  overflow: hidden;
  color: var(--caption-muted);
  font: clamp(9px, 0.78vw, 13px)/1.4 "Prompt-Light", sans-serif;
  text-shadow: var(--caption-shadow);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-info {
  display: flex;
  align-items: center;
  gap: clamp(6px, 0.7vw, 10px);
  min-width: 0;
}

.card-info > div:last-child { min-width: 0; }

.course-label {
  flex: 0 0 auto;
  margin-top: 5px;
  padding: clamp(5px, 0.55vw, 8px) clamp(8px, 0.9vw, 15px);
  border: 1px solid var(--label-separation-border);
  border-radius: 6px;
  color: #fff;
  font: 700 clamp(9px, 0.72vw, 12px)/1.35 "Prompt-Regular", sans-serif;
  text-align: center;
  text-shadow: 0 1px 2px rgba(0,0,0,.24);
  white-space: nowrap;
  box-shadow: var(--label-separation-shadow);
  -webkit-backdrop-filter: blur(8px) saturate(120%);
  backdrop-filter: blur(8px) saturate(120%);
}

.course-label--pink {
  background: linear-gradient(180deg, rgba(252,125,199,.98), rgba(216,63,135,.98));
}

/* Neutral labels become the inverse of the detected section surface.
   This fixes “ฮิตที่ INNER” disappearing into dark/grey backgrounds. */
.course-label--gray,
.course-label--dark {
  background: var(--adaptive-label-bg);
  color: var(--adaptive-label-text);
  border-color: var(--adaptive-label-border);
  text-shadow: none;
  box-shadow: var(--adaptive-label-shadow);
}

.course-label--white {
  background: rgba(255,255,255,.96);
  color: #171719;
  border-color: rgba(0,0,0,.16);
  text-shadow: none;
}

.course-label--black {
  background: rgba(25,25,27,.95);
  color: #ffffff;
  border-color: rgba(255,255,255,.18);
}

/* =========================================================
   PLAY / PAUSE — FLOATING LIQUID-GLASS CONTROL
   ---------------------------------------------------------
   Lives INSIDE the visual card area, so it adds no layout height.
   Wide desktop: very light / quiet.
   Compact browser + touch: slightly larger and easier to discover.
   Paused state: a touch clearer so Play is easy to find again.
   ========================================================= */
.play-pause-btn {
  position: absolute;
  top: var(--slider-control-offset);
  right: var(--slider-control-offset);
  bottom: auto;
  z-index: 120;

  display: grid;
  width: var(--slider-control-size);
  height: var(--slider-control-size);
  place-items: center;
  padding: 0;

  border: 1px solid rgba(255, 255, 255, .42);
  border-radius: 999px;

  background:
    linear-gradient(145deg, rgba(255,255,255,.22), rgba(255,255,255,.07)),
    rgba(12, 12, 14, .17);
  color: rgba(255, 255, 255, .96);

  box-shadow:
    0 5px 18px rgba(0, 0, 0, .17),
    inset 0 1px 0 rgba(255, 255, 255, .20),
    inset 0 -1px 0 rgba(0, 0, 0, .08);

  -webkit-backdrop-filter: blur(16px) saturate(165%);
  backdrop-filter: blur(16px) saturate(165%);

  opacity: var(--slider-control-opacity);
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;

  transition:
    opacity .22s ease,
    transform .22s cubic-bezier(.22,.61,.36,1),
    background-color .22s ease,
    border-color .22s ease,
    box-shadow .22s ease;
}

/* Modern thin icons. Both layers exist and cross-fade between states. */
.play-pause-btn::before,
.play-pause-btn::after {
  content: "";
  position: absolute;
  display: block;
  opacity: 0;
  transform: scale(.76);
  filter: drop-shadow(0 1px 2px rgba(0,0,0,.28));
  transition: opacity .16s ease, transform .20s cubic-bezier(.22,.61,.36,1);
  pointer-events: none;
}

/* Play — compact filled triangle, softer than the old border triangle. */
.play-pause-btn::before {
  width: 10px;
  height: 11px;
  margin-left: 1.5px;
  border: 0;
  background: currentColor;
  clip-path: polygon(16% 8%, 90% 50%, 16% 92%);
}

/* Pause — slim rounded bars. */
.play-pause-btn::after {
  width: 9px;
  height: 11px;
  border-radius: 2px;
  background:
    linear-gradient(
      to right,
      currentColor 0 28%,
      transparent 28% 72%,
      currentColor 72% 100%
    );
}

.play-pause-btn.is-play::before,
.play-pause-btn.is-pause::after {
  opacity: 1;
  transform: scale(1);
}

/* Paused: still elegant, but Play is easier to rediscover. */
.play-pause-btn.is-play {
  opacity: .92;
  border-color: rgba(255, 255, 255, .50);
  background:
    linear-gradient(145deg, rgba(255,255,255,.22), rgba(255,255,255,.075)),
    rgba(12, 12, 14, .18);
}

@media (hover: hover) and (pointer: fine) {
  /* Let the control gently reveal itself when the slider is being explored. */
  .course-slider:hover .play-pause-btn { opacity: .90; }

  .play-pause-btn:hover {
    opacity: 1;
    transform: scale(1.08);
    border-color: rgba(255, 255, 255, .52);
    background:
      linear-gradient(145deg, rgba(255,255,255,.26), rgba(255,255,255,.10)),
      rgba(12, 12, 14, .24);
    box-shadow:
      0 6px 20px rgba(0, 0, 0, .18),
      inset 0 1px 0 rgba(255, 255, 255, .26),
      inset 0 -1px 0 rgba(0, 0, 0, .08);
  }
}

.play-pause-btn:active { transform: scale(.93); }

.play-pause-btn:focus-visible {
  opacity: 1;
  outline: 2px solid rgba(255,255,255,.92);
  outline-offset: 2px;
}

.play-pause-btn:disabled { cursor: default; }

/* Medium / compact browser: easier to see without becoming a visual block. */
@media (max-width: 1100px) {
  :root {
    --slider-control-size: 32px;
    --slider-control-offset: 8px;
    --slider-control-opacity: .76;
  }
}

@media (pointer: coarse), (max-width: 768px) {
  :root {
    --card-gap: clamp(7px, 2vw, 10px);
    --edge-inset: 15px;
    --slider-control-size: 36px;
    --slider-control-offset: 8px;
    --slider-control-opacity: .86;
  }

  .play-pause-btn {
    border-color: rgba(255, 255, 255, .40);
    background:
      linear-gradient(145deg, rgba(255,255,255,.22), rgba(255,255,255,.075)),
      rgba(12, 12, 14, .18);
    box-shadow:
      0 5px 18px rgba(0, 0, 0, .16),
      inset 0 1px 0 rgba(255, 255, 255, .22);
  }

  .play-pause-btn.is-play { opacity: .96; }

  .play-pause-btn::before {
    width: 11px;
    height: 12px;
  }

  .play-pause-btn::after {
    width: 10px;
    height: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .slide-image,
  .overlay,
  .action-btn { transition-duration: 0.01ms !important; }
}

/* =========================================================
   INITIAL LOADING — NETFLIX SKELETON
   ---------------------------------------------------------
   Skeleton occupies the real card footprint while the real track is
   prepared behind it, then cross-fades without a layout jump.
   ========================================================= */

.course-slider {
  --loading-fade-duration: 460ms;
}

.course-slider.is-loading {
  transition: height var(--loading-fade-duration) cubic-bezier(.22,.61,.36,1);
}

.course-slider.is-loading .slider-track {
  position: absolute;
  top: 0;
  left: var(--edge-inset);
  opacity: 0;
  pointer-events: none;
}

.course-slider .slider-track {
  transition: opacity var(--loading-fade-duration) cubic-bezier(.22,.61,.36,1);
}

.course-slider.is-content-ready .slider-track {
  opacity: 1;
  pointer-events: auto;
}

.course-slider.is-loading .play-pause-btn {
  opacity: 0;
  pointer-events: none;
}

.slider-loading {
  position: relative;
  z-index: 5;
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: none;
  transition:
    opacity var(--loading-fade-duration) cubic-bezier(.22,.61,.36,1),
    transform var(--loading-fade-duration) cubic-bezier(.22,.61,.36,1),
    visibility 0s linear 0s;
}

.slider-loading.is-leaving,
.course-slider.is-content-ready .slider-loading {
  opacity: 0;
  visibility: hidden;
  transform: translateY(-5px);
  transition:
    opacity var(--loading-fade-duration) cubic-bezier(.22,.61,.36,1),
    transform var(--loading-fade-duration) cubic-bezier(.22,.61,.36,1),
    visibility 0s linear var(--loading-fade-duration);
}

.slider-loading-track {
  display: flex;
  flex-wrap: nowrap;
  align-items: flex-start;
  gap: var(--card-gap);
  width: max-content;
}

.slider-loading-card {
  position: relative;
  display: block;
  flex: 0 0 var(--card-width);
  width: var(--card-width);
  min-width: 0;
  margin: 0;
  padding: 0;
}

.slider-loading-media,
.slider-loading-line {
  position: relative;
  overflow: hidden;
  background: var(--skeleton-base);
}

.slider-loading-media {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  box-shadow: 0 4px 10px rgba(0,0,0,.04);
}

.slider-loading-line {
  height: clamp(7px, .7vw, 10px);
  margin-top: clamp(6px, .7vw, 9px);
  border-radius: 999px;
}

.slider-loading-line--wide { width: 72%; }

.slider-loading-line--short {
  width: 42%;
  height: clamp(6px, .58vw, 8px);
  margin-top: clamp(5px, .55vw, 7px);
  opacity: .82;
}

.slider-loading-media::after,
.slider-loading-line::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
    100deg,
    rgba(255,255,255,0) 0%,
    rgba(255,255,255,.20) 36%,
    var(--skeleton-shine) 50%,
    rgba(255,255,255,.20) 64%,
    rgba(255,255,255,0) 100%
  );
  transform: translateX(-110%);
  animation: course-slider-loading-shimmer 1.35s ease-in-out infinite;
  will-change: transform;
}

.slider-loading-sr {
  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;
}

@keyframes course-slider-loading-shimmer {
  100% { transform: translateX(110%); }
}

@media (prefers-reduced-motion: reduce) {
  .slider-loading-media::after,
  .slider-loading-line::after {
    animation: none !important;
  }

  .slider-loading,
  .course-slider .slider-track,
  .course-slider.is-loading {
    transition-duration: .01ms !important;
  }
}