/* ───────────────────────────────────────────────────────────────────
   Slider home — big cover-per-series carousel
   ─────────────────────────────────────────────────────────────────── */

.route-mount.is-slider { background: var(--bg); }

.slider-screen {
  position: relative;
  /* Fill remaining viewport below the sticky header (~72px) */
  height: calc(100svh - 72px);
  min-height: 560px;
  width: 100%;
  background: var(--bg);
  user-select: none;
  touch-action: pan-y; /* allow vertical scroll, capture horizontal swipes */
  overflow: hidden;
}

/* === INTRO ANIMATION ============================================== */
/* On first mount only — the center image zooms in from ~1.4 to 1,
   then the UI (title, meta, arrows, counter, dots) fades in. */

@keyframes slider-intro-zoom {
  0%   { transform: translate(-50%, -50%) scale(1.45); }
  100% { transform: translate(-50%, -50%) scale(1); }
}
@keyframes slider-intro-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Suppress side slides' fade-in noise during intro */
.slider-screen.is-intro .slider-slide.pos-left,
.slider-screen.is-intro .slider-slide.pos-right {
  opacity: 0;
  transition: opacity 1400ms ease 0ms;
}
.slider-screen.is-intro .slider-slide.pos-center {
  animation: slider-intro-zoom 2600ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* Whole overlay fades in together, slowly, in parallel with the zoom.
   Linear easing so the fade is visibly progressive end-to-end (not front-loaded). */
.slider-screen.is-intro .slider-ui {
  animation: slider-intro-fade-in 3700ms linear 400ms both;
}

/* Once intro completes, the normal slide transitions resume */
.slider-screen:not(.is-intro) .slider-slide.pos-left { opacity: 0.08; }
.slider-screen:not(.is-intro) .slider-slide.pos-right { opacity: 0.08; }

/* === STAGE — three slides side-by-side ============================ */
.slider-stage {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  justify-items: center;
}

/* Each slide is absolutely positioned + transitioned in/out */
.slider-slide {
  position: absolute;
  top: 54%;
  left: 50%;
  width: clamp(320px, 72vw, 1080px);
  height: clamp(380px, 70vh, 980px);
  aspect-ratio: 4 / 5;
  padding: 0;
  background: transparent;
  border: 0;
  cursor: pointer;
  transition:
    transform 700ms cubic-bezier(0.22, 1, 0.36, 1),
    opacity 700ms cubic-bezier(0.22, 1, 0.36, 1),
    filter 700ms ease;
  will-change: transform, opacity;
}

.slider-slide.pos-center {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
  z-index: 3;
  filter: brightness(1);
}
.slider-slide.pos-left {
  transform: translate(calc(-50% - 72vw), -50%) scale(0.84);
  opacity: 0.08;
  z-index: 1;
  filter: brightness(0.82);
  pointer-events: auto;
}
.slider-slide.pos-right {
  transform: translate(calc(-50% + 72vw), -50%) scale(0.84);
  opacity: 0.08;
  z-index: 1;
  filter: brightness(0.82);
  pointer-events: auto;
}

.slider-img {
  width: 100%; height: 100%;
  overflow: hidden;
  background: var(--bg-alt);
  position: relative;
}
.slider-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 800ms cubic-bezier(0.22, 1, 0.36, 1);
}
.slider-slide.pos-center:hover .slider-img img { transform: scale(1.012); }

/* === UI overlay ==================================================== */
.slider-ui {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: var(--space-4) var(--page-pad) var(--space-6);
  pointer-events: none; /* let stage receive events; re-enable on controls */
  z-index: 5;
}

.slider-top {
  display: flex;
  justify-content: center;
  align-items: baseline;
  gap: var(--space-4);
  color: var(--ink-60);
  text-align: center;
}
.slider-top-title {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  margin: calc(var(--space-2) * -1) 0 0 0;
}
.slider-top-title .slider-num { color: var(--ink-60); }
.slider-top-title .slider-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2rem, 4.2vw, 3.6rem);
  letter-spacing: var(--serif-tracking, -0.02em);
  line-height: 1;
  margin: 0;
  color: var(--ink);
  animation: slider-title-in 600ms cubic-bezier(0.22, 1, 0.36, 1);
}
.slider-top-title .slider-meta { color: var(--ink-60); margin-top: var(--space-1); }
.slider-counter {
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--ink);
}
.slider-counter-sep, .slider-counter-total { color: var(--ink-40); }

/* Center row: just holds the arrow positions */
.slider-center {
  position: relative;
  align-self: center;
  width: 100%;
  height: 1px;
}
.slider-arrow {
  pointer-events: auto;
  position: absolute;
  top: 50%;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--ink);
  opacity: 0.4;
  padding: var(--space-4);
  transition: opacity 250ms ease, transform 400ms cubic-bezier(0.22, 1, 0.36, 1);
}
.slider-arrow:hover { opacity: 1; }
.slider-arrow-l {
  left: max(var(--space-3), calc((100vw - 88vw) / 2 - 64px));
  transform: translateY(-50%);
}
.slider-arrow-l:hover { transform: translate(-6px, -50%); }
.slider-arrow-r {
  right: max(var(--space-3), calc((100vw - 88vw) / 2 - 64px));
  transform: translateY(-50%);
}
.slider-arrow-r:hover { transform: translate(6px, -50%); }
.slider-arrow svg { display: block; }
@media (max-width: 1024px) {
  .slider-arrow-l { left: var(--space-3); }
  .slider-arrow-r { right: var(--space-3); }
}
@media (max-width: 640px) {
  .slider-arrow { display: none; }
}

/* Bottom row: counter (L) · meta (C) · CTA + dots (R) */
.slider-bottom {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: end;
  gap: var(--space-6);
  pointer-events: none;
}
.slider-bottom-l {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-60);
  align-self: end;
}
.slider-bottom-c {
  color: var(--ink-60);
  text-align: center;
  justify-self: center;
  align-self: end;
}
.slider-num { color: var(--ink-60); }
.serif-didone .slider-title { font-feature-settings: "ss01", "kern"; }
@keyframes slider-title-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

.slider-cta-block {
  display: flex; flex-direction: column;
  align-items: flex-end;
  gap: var(--space-4);
  pointer-events: none;
  grid-column: 3;
}
.slider-cta {
  pointer-events: auto;
  display: inline-flex; align-items: center; gap: var(--space-3);
  position: relative; padding: var(--space-3) 0;
  color: var(--ink);
}
.slider-cta::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0;
  height: 1px; background: var(--ink-40);
  transition: background 250ms ease, transform 300ms ease;
}
.slider-cta:hover::after { background: var(--ink); }
.slider-cta-arrow {
  font-family: var(--font-mono); font-size: 0.95rem;
  transition: transform 300ms ease;
}
.slider-cta:hover .slider-cta-arrow { transform: translateX(4px); }

.slider-dots {
  pointer-events: auto;
  display: flex; gap: 6px;
  align-items: center;
}
.slider-dot {
  width: 18px; height: 1px;
  background: var(--ink-40);
  border-radius: 0;
  transition: background 250ms ease, width 300ms ease;
}
.slider-dot:hover { background: var(--ink-60); }
.slider-dot.active { background: var(--ink); width: 36px; }

@media (max-width: 768px) {
  .slider-bottom { grid-template-columns: 1fr; }
  .slider-bottom-c { display: none; }
  .slider-cta-block { align-items: flex-start; grid-column: 1; }
  .slider-dots { flex-wrap: wrap; max-width: 100%; }
}
.serif-didone .slider-top-title .slider-title { font-feature-settings: "ss01", "kern"; }