/* ================================================
   Country Story Slider (css__ prefix)
   Full-screen cinematic narrative slider — 11 ASEAN nations
   All sizes use fluid clamp() for viewport-responsive scaling.
   ================================================ */

/* ── Section container ─────────────────────────────────────── */
#slider-section {
  position: relative;
  width: 100%;
  height: 100vh;           /* exactly one viewport tall */
  min-height: 600px;
  max-height: 1080px;
  overflow: hidden;
  isolation: isolate;
}

/* ── Background image layer ───────────────────────────────── */
.css__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.css__bg-img {
  position: absolute;
  inset: -5%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  will-change: transform;
}

.css__bg-img.bg-zoom {
  animation: cssZoomIn 8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

@keyframes cssZoomIn {
  from { transform: scale(1.12); }
  to   { transform: scale(1.02); }
}

/* Dark veil — stronger on left so text is readable */
.css__bg-veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(100deg,
      rgba(4, 10, 7, 0.92)  0%,
      rgba(4, 10, 7, 0.72) 30%,
      rgba(4, 10, 7, 0.28) 58%,
      rgba(4, 10, 7, 0.04) 100%),
    linear-gradient(180deg,
      rgba(4, 10, 7, 0.50)  0%,
      rgba(4, 10, 7, 0.00) 25%,
      rgba(4, 10, 7, 0.00) 60%,
      rgba(4, 10, 7, 0.80) 100%);
}

/* Film grain */
.css__bg-grain {
  position: absolute;
  inset: 0;
  z-index: 2;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  pointer-events: none;
  mix-blend-mode: overlay;
}

/* ── Section header bar ───────────────────────────────────── */
.css__header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 14px;
  /* vertical: matches navbar height; horizontal: clears journey-nav sidebar */
  padding: clamp(16px, 2.6vh, 28px) clamp(20px, 4vw, 64px);
}

.css__header-kicker {
  font-family: var(--font-ui);
  font-size: clamp(8px, 0.6vw, 10px);
  font-weight: 600;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: rgba(208, 236, 197, 0.44);
  white-space: nowrap;
  flex-shrink: 0;
}

.css__header-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(208, 236, 197, 0.18) 0%, transparent 100%);
}

.css__header-count {
  font-family: var(--font-ui);
  font-size: clamp(8px, 0.6vw, 10px);
  font-weight: 600;
  letter-spacing: 0.14em;
  color: rgba(208, 236, 197, 0.34);
  flex-shrink: 0;
  transition: color 0.4s ease;
}

/* ── Story panel ──────────────────────────────────────────── */
/*
   Key layout rules:
   • top / transform centre the panel vertically in the viewport
   • The navbar is ~60–80px tall; the thumb strip ~130–160px; remaining ~60–80% for story
   • We push top to ~52% to nudge below navbar, then translate up by 44%
   • left must clear the journey-rail sidebar (≈ 38px) + a margin
*/
.css__story {
  position: absolute;
  left: clamp(56px, 6.8vw, 124px);   /* clears 38px journey-nav + breathing room */
  top: 52%;
  transform: translateY(-48%);
  z-index: 20;
  /* width: 38 vw on desktop, shrinks on smaller screens */
  width: min(clamp(240px, 34vw, 520px), 48%);
  pointer-events: all;
  transition: opacity 0.32s ease, transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Slide transitions */
.css__story.exit-left  { opacity: 0; transform: translateY(-48%) translateX(-36px); pointer-events: none; }
.css__story.exit-right { opacity: 0; transform: translateY(-48%) translateX( 36px); pointer-events: none; }
.css__story.enter-right { opacity: 0; transform: translateY(-48%) translateX( 52px); }
.css__story.enter-left  { opacity: 0; transform: translateY(-48%) translateX(-52px); }

/* ── Ghost serial number ────────────────────────────────── */
.css__story-serial {
  font-family: var(--font-display);
  /* scale: 4.8 vw gives ~49px @1024, ~72px @1440, clamped 40–88px */
  font-size: clamp(40px, 4.8vw, 88px);
  font-weight: 700;
  line-height: 0.85;
  letter-spacing: -0.02em;
  color: rgba(255, 255, 255, 0.05);
  margin-bottom: -0.1em;
  user-select: none;
}

/* ── Eyebrow / realm subtitle ───────────────────────────── */
.css__story-eyebrow {
  font-family: var(--font-ui);
  /* ~9px @1024px */
  font-size: clamp(7px, 0.7vw, 10px);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(100, 220, 180, 0.80);
  margin-bottom: clamp(4px, 0.8vh, 10px);
  line-height: 1.55;
  /* wrap is fine — just don't let it balloon */
  max-width: 100%;
}

/* ── Country name headline ──────────────────────────────── */
.css__story-name {
  font-family: var(--font-display);
  /*
     Target: looks good at ~48–56px on 1024px screen.
     3.8 vw → 38.9px @1024 → clamped min 30px, max 68px
     On 1280: 48.6px  On 1440: 54.7px  On 1920: 68px (capped)
  */
  font-size: clamp(30px, 3.8vw, 68px);
  font-weight: 700;
  letter-spacing: 0.09em;
  line-height: 1.0;
  background: linear-gradient(150deg, #ffffff 10%, #c8f0e8 55%, #43dfc6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 6px 18px rgba(0,0,0,0.65)) drop-shadow(0 0 32px rgba(67, 223, 198, 0.25));
  margin: 0 0 clamp(10px, 1.6vh, 20px);
  white-space: nowrap;
}

/* Divider */
.css__story-divider {
  width: clamp(32px, 3.6vw, 64px);
  height: 2px;
  background: linear-gradient(90deg, rgba(67, 223, 198, 0.85) 0%, transparent 100%);
  margin-bottom: clamp(8px, 1.4vh, 18px);
  border-radius: 2px;
}

/* Quest label */
.css__story-quest-label {
  font-family: var(--font-ui);
  font-size: clamp(7px, 0.6vw, 9px);
  font-weight: 600;
  letter-spacing: 0.30em;
  text-transform: uppercase;
  color: rgba(100, 220, 180, 0.55);
  margin: 0 0 clamp(4px, 0.7vh, 8px);
}

/* Quest story text */
.css__story-quest {
  font-family: var(--font-body, var(--font-ui));
  /* ~13px @1024, capped 15px */
  font-size: clamp(11px, 0.92vw, 15px);
  font-weight: 400;
  line-height: 1.78;
  color: rgba(228, 244, 226, 0.82);
  margin: 0 0 clamp(16px, 2.4vh, 32px);
  max-width: 100%;
}

/* Nav buttons */
.css__story-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.css__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  /* ~44px @1024 */
  width: clamp(38px, 3.4vw, 58px);
  height: clamp(38px, 3.4vw, 58px);
  border-radius: 50%;
  border: 1px solid rgba(221, 255, 214, 0.15);
  background: linear-gradient(180deg, rgba(18, 34, 22, 0.72) 0%, rgba(12, 24, 16, 0.54) 100%);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  cursor: pointer;
  color: rgba(230, 248, 224, 0.88);
  transition: background 0.22s ease, border-color 0.22s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.css__btn:hover {
  background: linear-gradient(180deg, rgba(67, 223, 198, 0.18) 0%, rgba(67, 223, 198, 0.07) 100%);
  border-color: rgba(67, 223, 198, 0.48);
  transform: scale(1.08);
  box-shadow: 0 0 18px rgba(67, 223, 198, 0.18);
}

.css__btn svg {
  width: clamp(14px, 1.2vw, 20px);
  height: clamp(14px, 1.2vw, 20px);
}

/* ── Progress bar ─────────────────────────────────────────── */
/*
   Sit between the story actions and the thumb strip.
   Use bottom relative to strip height (≈ strip-wrap padding + thumb height).
   thumb height at 3/4 ratio with width ~8vw → ~10.7vw; clamp to 100–145px.
   strip-wrap padding ~18px top + thumb ~120px + some breathing → ~150px.
*/
.css__progress {
  position: absolute;
  bottom: clamp(140px, 19vh, 190px);
  left: clamp(56px, 6.8vw, 124px);
  width: clamp(160px, 24vw, 400px);
  height: 2px;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 2px;
  z-index: 20;
  overflow: hidden;
}

.css__progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, rgba(67, 223, 198, 0.92) 0%, rgba(100, 220, 180, 0.48) 100%);
  border-radius: 2px;
}

/* ── Thumbnail strip ──────────────────────────────────────── */
.css__strip-wrap {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 20;
  padding: clamp(10px, 1.6vh, 20px) clamp(12px, 2.4vw, 40px);
  background: linear-gradient(to top, rgba(4, 10, 7, 0.85) 0%, rgba(4, 10, 7, 0.0) 100%);
  /* NO mask — was hiding thumbnails at left/right edges */
}

.css__strip {
  display: flex;
  gap: clamp(6px, 0.7vw, 12px);
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  cursor: grab;
  user-select: none;
  padding-bottom: 2px;
  /* align items to bottom so active-raised cards don't expand strip height */
  align-items: flex-end;
}

.css__strip::-webkit-scrollbar { display: none; }
.css__strip.is-dragging { cursor: grabbing; }

/* Individual thumbnail */
.css__thumb {
  position: relative;
  flex-shrink: 0;
  /*
     Reduced: ~59px @1024  ~80px @1440  cap 96px
     Ensures all 11 fit in one row on most screens without scrolling.
  */
  width: clamp(56px, 5.8vw, 96px);
  aspect-ratio: 3 / 4;
  border-radius: clamp(8px, 0.8vw, 14px);
  overflow: hidden;
  border: 1px solid rgba(221, 255, 214, 0.10);
  cursor: pointer;
  transition:
    transform   0.32s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow  0.32s ease,
    border-color 0.32s ease,
    filter       0.32s ease;
  filter: saturate(0.65) brightness(0.72);
}

.css__thumb:hover {
  transform: translateY(-5px) scale(1.04);
  filter: saturate(0.95) brightness(0.92);
}

.css__thumb.is-active {
  border-color: rgba(67, 223, 198, 0.74);
  box-shadow: 0 0 0 2px rgba(67, 223, 198, 0.26), 0 12px 28px rgba(0,0,0,0.55);
  transform: translateY(-7px) scale(1.05);
  filter: saturate(1.08) brightness(1.04);
}

.css__thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  transition: transform 0.48s ease;
}
.css__thumb:hover .css__thumb-img,
.css__thumb.is-active .css__thumb-img {
  transform: scale(1.07);
}

/* Overlay gradient on thumb */
.css__thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(4, 10, 7, 0.72) 0%, rgba(4, 10, 7, 0.10) 50%, transparent 100%);
  border-radius: inherit;
  pointer-events: none;
}

/* Serial on thumb */
.css__thumb-serial {
  position: absolute;
  top: 6px;
  right: 6px;
  z-index: 2;
  font-family: var(--font-display);
  font-size: clamp(9px, 0.9vw, 14px);
  font-weight: 700;
  color: rgba(255, 255, 255, 0.16);
  line-height: 1;
  letter-spacing: 0.04em;
}

/* Country name on thumb */
.css__thumb-name {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  z-index: 2;
  padding: 16px 6px 6px;
  font-family: var(--font-display);
  font-size: clamp(6px, 0.56vw, 9px);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(230, 248, 220, 0.88);
  text-align: center;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Active indicator bar */
.css__thumb-active-bar {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  z-index: 3;
  height: 3px;
  background: linear-gradient(90deg,
    rgba(67, 223, 198, 0.0)   0%,
    rgba(67, 223, 198, 0.92) 50%,
    rgba(67, 223, 198, 0.0) 100%);
  transform: scaleX(0);
  transition: transform 0.38s cubic-bezier(0.22, 1, 0.36, 1);
  border-radius: 3px;
}
.css__thumb.is-active .css__thumb-active-bar {
  transform: scaleX(1);
}

/* Stagger reveal handled in JS (CountryStorySlider.js) to avoid is-visible cycling issues */

/* ================================================================
   RESPONSIVE BREAKPOINTS
   ================================================================ */

/* ── Large desktop (≥ 1600px) — just loosen limits slightly ── */
@media (min-width: 1600px) {
  .css__story {
    left: clamp(80px, 7.2vw, 140px);
    width: clamp(420px, 32vw, 560px);
  }

  .css__story-name {
    font-size: clamp(48px, 3.6vw, 72px);
  }

  .css__progress {
    left: clamp(80px, 7.2vw, 140px);
    bottom: clamp(160px, 18vh, 210px);
  }
}

/* ── 1280 – 1599 px – standard laptop / monitor ── */
@media (min-width: 1281px) and (max-width: 1599px) {
  .css__story {
    left: clamp(64px, 6vw, 110px);
    width: clamp(340px, 35vw, 520px);
  }
}

/* ── Tablet landscape 769–1280px ───────────────────────────── */
@media (max-width: 1280px) {
  .css__story {
    left: clamp(52px, 5.6vw, 90px);
    width: min(clamp(240px, 44vw, 460px), 52%);
  }

  .css__story-name {
    font-size: clamp(26px, 3.6vw, 56px);
  }

  .css__story-serial {
    font-size: clamp(36px, 4.2vw, 72px);
  }

  .css__story-quest {
    font-size: clamp(10px, 0.88vw, 14px);
  }

  .css__progress {
    left: clamp(52px, 5.6vw, 90px);
    width: clamp(140px, 22vw, 340px);
    bottom: clamp(130px, 17.5vh, 180px);
  }

  .css__thumb {
    width: clamp(52px, 6.8vw, 88px);
  }
}

/* ── Tablet portrait / large phone (≤ 768px) ──────────────── */
@media (max-width: 768px) {
  #slider-section {
    height: auto;
    min-height: 100svh;
    max-height: none;
    display: flex;
    flex-direction: column;
  }

  /* Story panel becomes in-flow, not absolutely positioned */
  .css__story {
    position: relative;
    left: auto; top: auto;
    transform: none;
    width: 100%;
    flex: 1;
    padding: clamp(80px, 14vh, 120px) clamp(18px, 5vw, 36px) 0;
    /* reset animation transforms for mobile */
  }

  .css__story.exit-left  { transform: translateX(-26px); opacity: 0; }
  .css__story.exit-right { transform: translateX( 26px); opacity: 0; }
  .css__story.enter-right { transform: translateX( 38px); opacity: 0; }
  .css__story.enter-left  { transform: translateX(-38px); opacity: 0; }

  .css__story-serial {
    font-size: clamp(44px, 16vw, 88px);
  }

  .css__story-name {
    font-size: clamp(26px, 8vw, 48px);
    white-space: normal;
    word-break: break-word;
  }

  .css__story-eyebrow {
    font-size: clamp(7px, 2vw, 10px);
  }

  .css__story-quest {
    font-size: clamp(12px, 3.2vw, 15px);
    line-height: 1.7;
  }

  /* Progress floats just above thumb strip */
  .css__progress {
    position: relative;
    left: auto; bottom: auto;
    width: calc(100% - clamp(36px, 10vw, 72px));
    margin: clamp(12px, 2vh, 20px) auto 0;
  }

  .css__header {
    padding: clamp(14px, 2vh, 22px) clamp(18px, 5vw, 36px);
  }

  .css__strip-wrap {
    padding: 8px 12px 14px;
    /* no mask on mobile either — use padding for breathing room */
  }

  .css__strip {
    gap: 8px;
    padding: 0 18px 2px;
  }

  .css__thumb {
    width: clamp(52px, 17vw, 82px);
    border-radius: 10px;
    filter: saturate(0.78) brightness(0.78);
  }
}

/* ── Small phone (≤ 480px) ─────────────────────────────────── */
@media (max-width: 480px) {
  .css__story {
    padding-top: clamp(70px, 12vh, 100px);
  }

  .css__story-name {
    font-size: clamp(24px, 9.5vw, 38px);
  }

  .css__thumb {
    width: clamp(48px, 16vw, 68px);
  }
}

/* ── Very small / landscape on phone (≤ 380px) ─────────────── */
@media (max-width: 380px) {
  .css__story-name {
    font-size: clamp(22px, 10vw, 34px);
  }

  .css__thumb {
    width: 48px;
  }
}