/**
 * Photo Gaon - Scrollytelling Visual Archive
 * Tactile Darkroom Aesthetic & High-Performance Fixed Stage
 */

:root {
  --scrolly-bg: #140306; /* Authentic Royal Crimson darkroom canvas */
  --scrolly-surface: linear-gradient(155deg, rgba(38, 7, 12, 0.94) 0%, rgba(20, 4, 8, 0.97) 100%);
  --scrolly-surface-active: linear-gradient(155deg, rgba(48, 9, 16, 0.97) 0%, rgba(26, 5, 10, 0.99) 100%);
  --scrolly-border: rgba(255, 199, 0, 0.35); /* Radiant storefront yellow border */
  --scrolly-border-active: #FFC700;
  --scrolly-text: #FFFDF7;
  --scrolly-muted: #D4AF98;
  
  /* Authentic Photo Gaon Storefront Colors */
  --scrolly-accent-red: #D71921;
  --scrolly-accent-red-hover: #B71118;
  --scrolly-accent-yellow: #FFC700;
  --scrolly-accent-yellow-hover: #E5B200;
  --scrolly-accent-red-glow: rgba(215, 25, 33, 0.5);
  --scrolly-accent-yellow-glow: rgba(255, 199, 0, 0.6);
  
  --scrolly-accent: #D71921;
  --scrolly-gold: #FFC700;
}

/* Page Reset for Scrollytelling Mode */
.photogaon-scrolly-page {
  background-color: var(--scrolly-bg);
  color: var(--scrolly-text);
  min-height: 100vh;
}

/* Top Exhibition Status Header */
.scrolly-header-hud {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  background: rgba(26, 4, 8, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 2px solid rgba(255, 199, 0, 0.35);
  z-index: 100;
  font-family: var(--wp--preset--font-family--sans-ui, sans-serif);
}

/* 3px Red-to-Yellow Gradient Scroll Progress Line */
.scrolly-scroll-progress-line {
  position: absolute;
  bottom: -1px;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(to right, var(--scrolly-accent-red), var(--scrolly-accent-yellow));
  box-shadow: 0 0 10px var(--scrolly-accent-yellow-glow);
  transition: width 0.08s ease-out;
  z-index: 101;
}

.scrolly-header-hud .brand-link {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  color: var(--scrolly-text);
  text-decoration: none;
}

.scrolly-header-hud .brand-title {
  font-family: var(--wp--preset--font-family--editorial-serif, Georgia, serif);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.scrolly-header-hud .brand-subtitle {
  font-family: var(--wp--preset--font-family--monospace, monospace);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--scrolly-gold);
  text-transform: uppercase;
}

.scrolly-header-hud .hud-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Rounded Header Action Buttons */
.scrolly-header-hud .btn-hud {
  font-family: var(--wp--preset--font-family--sans-ui, sans-serif);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.55rem 1.35rem;
  border-radius: 999px; /* Rounded pill button */
  text-decoration: none;
  transition: all 0.25s ease;
}

.scrolly-header-hud .btn-hud-outline {
  border: 1px solid var(--scrolly-border);
  color: var(--scrolly-text);
  background: transparent;
  border-radius: 999px;
}

.scrolly-header-hud .btn-hud-outline:hover {
  border-color: var(--scrolly-gold);
  color: var(--scrolly-gold);
}

.scrolly-header-hud .btn-hud-accent {
  background: var(--scrolly-accent-red);
  color: #FFFFFF;
  border: 1px solid var(--scrolly-accent-red);
  border-radius: 999px;
  box-shadow: 0 4px 14px var(--scrolly-accent-red-glow);
}

.scrolly-header-hud .btn-hud-accent:hover {
  background: var(--scrolly-accent-red-hover);
  border-color: var(--scrolly-accent-red-hover);
  transform: translateY(-1px);
}

/* Master Scrolly Container */
.photogaon-scrolly-container {
  position: relative;
  width: 100%;
  background: var(--scrolly-bg);
}

/* FIXED Photography Stage (Viewport-Locked Behind Scrolling Cards) */
.photogaon-scrolly-stage {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(circle at 80% 20%, rgba(215, 25, 33, 0.25) 0%, transparent 60%),
              radial-gradient(circle at 15% 75%, rgba(255, 199, 0, 0.16) 0%, transparent 55%),
              #120305;
}

/* Slide Stack */
.scrolly-slide-stack {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.scrolly-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transform: scale(1.05);
  transition: opacity 0.75s cubic-bezier(0.25, 1, 0.5, 1), transform 0.95s cubic-bezier(0.25, 1, 0.5, 1);
  will-change: opacity, transform;
}

.scrolly-slide.is-active {
  opacity: 1;
  transform: scale(1);
  z-index: 2;
}

.scrolly-slide.was-active {
  z-index: 1;
}

.scrolly-slide-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 38%;
  display: block;
}

/* Atmospheric Lighting Overlay (Warm Cinematic Royal Crimson Vignette) */
.scrolly-slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(20, 3, 6, 0.55) 0%, rgba(20, 3, 6, 0.2) 40%, rgba(26, 4, 8, 0.9) 100%),
              linear-gradient(to bottom, rgba(26, 4, 8, 0.7) 0%, transparent 16%, transparent 80%, rgba(20, 3, 6, 0.94) 100%);
  pointer-events: none;
}

/* Slide Ambient Frame Markers */
.slide-frame-marker {
  position: absolute;
  font-family: var(--wp--preset--font-family--monospace, monospace);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  color: rgba(255, 199, 0, 0.65);
  text-transform: uppercase;
  z-index: 3;
  pointer-events: none;
}

.slide-frame-marker.top-left {
  top: 84px;
  left: clamp(1.5rem, 4vw, 3rem);
}

.slide-frame-marker.bottom-right {
  bottom: 24px;
  right: clamp(1.5rem, 4vw, 3rem);
}

/* Bottom Telemetry HUD Bar (Fixed Over Viewport Bottom) */
.scrolly-telemetry-hud {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 56px;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(to top, rgba(22, 3, 6, 0.98) 20%, rgba(22, 3, 6, 0.75) 80%, transparent);
  border-top: 1.5px solid rgba(255, 199, 0, 0.28);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 90;
  pointer-events: none;
}

.telemetry-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--wp--preset--font-family--monospace, monospace);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--scrolly-muted);
}

.telemetry-item strong {
  color: var(--scrolly-text);
  font-weight: 500;
}

.telemetry-exif {
  color: var(--scrolly-accent);
}

/* Chapter Scrubber / Navigation Strip */
.scrolly-scrubber-nav {
  position: fixed;
  left: clamp(1.5rem, 3vw, 2.5rem);
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  z-index: 90;
}

.scrubber-dot-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  cursor: pointer;
  background: transparent;
  border: none;
  padding: 0;
  outline: none;
}

.scrubber-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 199, 0, 0.35);
  border: 1px solid rgba(215, 25, 33, 0.4);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 0 0 0 transparent;
}

.scrubber-label {
  font-family: var(--wp--preset--font-family--monospace, monospace);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--scrolly-muted);
  opacity: 0;
  transform: translateX(-8px);
  transition: all 0.3s ease;
  white-space: nowrap;
  pointer-events: none;
}

.scrubber-dot-wrap:hover .scrubber-label,
.scrubber-dot-wrap:focus-visible .scrubber-label {
  opacity: 1;
  transform: translateX(0);
}

.scrubber-dot-wrap.is-active .scrubber-dot {
  background: #FFC700;
  border-color: #D71921;
  transform: scale(1.6);
  box-shadow: 0 0 14px var(--scrolly-accent-yellow-glow), 0 0 6px var(--scrolly-accent-red-glow);
}

.scrubber-dot-wrap.is-active .scrubber-label {
  opacity: 1;
  transform: translateX(0);
  color: #FFC700;
  font-weight: 700;
}

/* Narrative Story Track (Scrolls Naturally Over Fixed Stage) */
.photogaon-scrolly-track {
  position: relative;
  z-index: 10;
  pointer-events: auto;
}

.scrolly-track-inner {
  max-width: 1340px;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  display: flex;
  justify-content: flex-end; /* Position narrative column on right */
}

.scrolly-steps-column {
  width: 100%;
  max-width: 580px;
  padding-top: 12vh;
  padding-bottom: 25vh;
}

/* Individual Story Step */
.story-step {
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3.5rem 0;
  opacity: 0.35;
  filter: blur(1.5px);
  transform: translateY(20px) scale(0.98);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), filter 0.5s ease;
}

.story-step.is-active {
  opacity: 1;
  filter: blur(0);
  transform: translateY(0) scale(1);
}

/* Step Card Architecture */
.story-step-card {
  background: var(--scrolly-surface);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1.5px solid var(--scrolly-border);
  border-radius: 20px;
  padding: clamp(2rem, 4vw, 3rem);
  width: 100%;
  box-shadow: 0 24px 60px -10px rgba(0, 0, 0, 0.9), 0 0 28px -5px var(--scrolly-accent-red-glow);
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Authentic Photo Gaon Storefront Red-to-Yellow Accent Stripe */
.story-step-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--scrolly-accent-red) 0%, var(--scrolly-accent-yellow) 100%);
}

.story-step.is-active .story-step-card {
  background: var(--scrolly-surface-active);
  border-color: var(--scrolly-accent-yellow);
  box-shadow: 0 30px 70px -10px rgba(0, 0, 0, 0.95), 0 0 35px 2px var(--scrolly-accent-red-glow), 0 0 16px var(--scrolly-accent-yellow-glow);
}

/* Floating Scroll Invitation on First Frame */
.scrolly-scroll-hint {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1.5rem;
  font-family: var(--wp--preset--font-family--monospace, monospace);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--scrolly-gold);
  animation: scrollyPulse 2s infinite ease-in-out;
}

@keyframes scrollyPulse {
  0%, 100% {
    opacity: 0.65;
    transform: translateY(0);
  }
  50% {
    opacity: 1;
    transform: translateY(4px);
  }
}

/* Card Badge & Eyebrow */
.step-header-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid rgba(255, 199, 0, 0.22);
  padding-bottom: 0.85rem;
}

/* Yellow on Red pill badge - matches Photo Gaon physical storefront panels */
.step-series-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--scrolly-accent-red);
  color: var(--scrolly-accent-yellow);
  border: 1px solid rgba(255, 199, 0, 0.45);
  font-family: var(--wp--preset--font-family--monospace, monospace);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
  padding: 0.35rem 0.95rem;
  border-radius: 999px;
  box-shadow: 0 2px 10px var(--scrolly-accent-red-glow);
}

.step-index-num {
  font-family: var(--wp--preset--font-family--monospace, monospace);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--scrolly-accent-yellow);
}

/* Step Typography */
.step-title {
  font-family: var(--wp--preset--font-family--editorial-serif, Georgia, serif);
  font-size: clamp(1.85rem, 3vw, 2.5rem);
  font-weight: 500;
  line-height: 1.15;
  color: var(--scrolly-text);
  margin-bottom: 0.85rem;
}

.step-subtitle {
  font-family: var(--wp--preset--font-family--sans-ui, sans-serif);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--scrolly-gold);
  margin-bottom: 1.25rem;
}

.step-narrative {
  font-family: var(--wp--preset--font-family--sans-ui, sans-serif);
  font-size: 1rem;
  line-height: 1.7;
  color: #E2DFD7;
  margin-bottom: 1.75rem;
}

/* Deliverables & Metadata Box */
.step-spec-box {
  background: rgba(215, 25, 33, 0.14);
  border: 1px solid rgba(255, 199, 0, 0.35);
  border-left: 4px solid var(--scrolly-accent-yellow);
  border-radius: 12px;
  padding: 1.15rem 1.25rem;
  margin-bottom: 1.75rem;
}

.spec-box-title {
  font-family: var(--wp--preset--font-family--monospace, monospace);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--scrolly-accent-yellow);
  margin-bottom: 0.35rem;
  font-weight: 700;
}

.spec-box-deliverables {
  font-family: var(--wp--preset--font-family--sans-ui, sans-serif);
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--scrolly-text);
}

/* Step Footer Actions */
.step-footer-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-step-action {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--wp--preset--font-family--sans-ui, sans-serif);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.75rem 1.6rem;
  border-radius: 999px; /* Rounded button */
  text-decoration: none;
  background: var(--scrolly-accent-red);
  color: #FFFFFF;
  border: 1.5px solid var(--scrolly-accent-yellow);
  transition: all 0.25s ease;
  box-shadow: 0 4px 16px var(--scrolly-accent-red-glow);
}

.btn-step-action:hover {
  background: var(--scrolly-accent-yellow);
  color: #140306;
  border-color: var(--scrolly-accent-yellow);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px var(--scrolly-accent-yellow-glow);
}

.btn-step-secondary {
  font-family: var(--wp--preset--font-family--sans-ui, sans-serif);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--scrolly-accent-yellow);
  text-decoration: none;
  transition: color 0.2s ease;
}

.btn-step-secondary:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

/* Final Epilogue Section */
.scrolly-epilogue-step {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 0;
  position: relative;
  z-index: 10;
}

.epilogue-card {
  max-width: 760px;
  background: var(--scrolly-surface-active);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1.5px solid var(--scrolly-border);
  border-radius: 20px;
  padding: clamp(2.5rem, 5vw, 4rem);
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 32px 64px -16px rgba(0, 0, 0, 0.9), 0 0 35px var(--scrolly-accent-red-glow);
}

.epilogue-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--scrolly-accent-red) 0%, var(--scrolly-accent-yellow) 100%);
}

/* Epilogue Action Buttons - Guaranteed High Contrast */
.btn-epilogue-action {
  font-family: var(--wp--preset--font-family--sans-ui, sans-serif);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none !important;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.25s ease;
}

.btn-epilogue-call {
  background: rgba(215, 25, 33, 0.45) !important;
  border: 1.5px solid var(--scrolly-accent-yellow) !important;
  color: #FFFDF7 !important;
  box-shadow: 0 4px 16px rgba(215, 25, 33, 0.4);
}

.btn-epilogue-call:hover {
  background: var(--scrolly-accent-yellow) !important;
  border-color: var(--scrolly-accent-yellow) !important;
  color: #140306 !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--scrolly-accent-yellow-glow);
}

.btn-epilogue-top {
  background: rgba(255, 199, 0, 0.12) !important;
  border: 1.5px solid var(--scrolly-accent-yellow) !important;
  color: var(--scrolly-accent-yellow) !important;
}

.btn-epilogue-top:hover {
  background: var(--scrolly-accent-yellow) !important;
  border-color: var(--scrolly-accent-yellow) !important;
  color: #140306 !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--scrolly-accent-yellow-glow);
}

/* Global button outline fallback */
.btn-hud-outline {
  border: 1.5px solid var(--scrolly-border) !important;
  color: #FFFDF7 !important;
  background: rgba(255, 199, 0, 0.08) !important;
  border-radius: 999px !important;
  text-decoration: none !important;
}

.btn-hud-outline:hover {
  border-color: var(--scrolly-gold) !important;
  background: var(--scrolly-gold) !important;
  color: #140306 !important;
}

/* Mobile & Tablet Adaptations */
@media (max-width: 1024px) {
  .scrolly-scrubber-nav {
    display: none; /* Hide side dots on tablets & mobile */
  }

  .scrolly-track-inner {
    justify-content: center;
  }

  .scrolly-steps-column {
    max-width: 640px;
  }
}

@media (max-width: 768px) {
  .scrolly-slide-overlay {
    background: linear-gradient(to bottom, rgba(20, 3, 6, 0.4) 0%, rgba(20, 3, 6, 0.75) 50%, rgba(26, 4, 8, 0.96) 100%);
  }

  .story-step {
    min-height: 82vh;
    padding: 2rem 0;
    opacity: 0.45;
    filter: none;
  }

  .story-step-card {
    padding: 1.5rem;
  }

  .scrolly-telemetry-hud .telemetry-item:not(.primary-telemetry) {
    display: none;
  }

  .slide-frame-marker {
    display: none;
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  .scrolly-slide,
  .story-step,
  .scrubber-dot,
  .scrolly-scroll-hint {
    transition: none !important;
    transform: none !important;
    animation: none !important;
  }
}