/* === Scrollytelling Layout === */

/* Intro section */
#intro {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  text-align: left;
  padding: var(--space-lg);
  position: relative;
  background:
    linear-gradient(to bottom, rgba(10,10,20,0.3) 0%, rgba(10,10,20,0.5) 50%, rgba(10,10,20,0.88) 100%),
    url('../assets/press/hero-clipsource.webp') center center / cover no-repeat;
  z-index: var(--z-narrative);
}

#intro .intro-narrator {
  grid-column: 1;
  grid-row: 2;
  align-self: end;
  justify-self: center;
  margin-bottom: 8vh;
}

.intro-title {
  margin-bottom: var(--space-md);
  opacity: 0;
  animation: intro-fade-in 1.5s ease forwards 0.3s;
}

.intro-subtitle {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  opacity: 0;
  animation: intro-fade-in 1.5s ease forwards 0.8s;
}

.intro-narrator {
  opacity: 0;
  animation: intro-fade-in 1.5s ease forwards 1.3s;
  max-width: 520px;
}

.intro-scroll-hint {
  position: absolute;
  bottom: var(--space-lg);
  left: 25%;
  transform: translateX(-50%);
  color: var(--text-muted);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0;
  animation: intro-fade-in 1.5s ease forwards 2s, scroll-hint-bounce 2s ease-in-out infinite 3s;
}

@keyframes intro-fade-in {
  to { opacity: 1; }
}

@keyframes scroll-hint-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* Guided section — sticky graph + floating chapters */
#guided {
  position: relative;
}

.guided-graph-wrapper {
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: var(--z-graph);
}

.chapters-track {
  position: relative;
  z-index: var(--z-narrative);
  pointer-events: none;
  margin-top: -100vh; /* Overlap the sticky graph */
}

/* Each chapter */
.chapter {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--space-2xl) var(--space-lg);
  pointer-events: auto;
}

.chapter-content {
  max-width: 420px;
  padding: var(--space-lg);
  background: var(--bg-overlay);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  backdrop-filter: blur(12px);
  position: relative;
}

/* ========================================
   Document card-stack (hover-scrollable)
   Compact by default, expands on hover.
   Cards behind fan out to fill the right side.
   ======================================== */
.doc-stack {
  position: fixed;
  right: 2vw;
  top: 50%;
  z-index: var(--z-panel);
  pointer-events: none;
  perspective: 1400px;

  /* Compact default size */
  width: 16vw;
  max-width: 220px;

  /* Entry animation */
  opacity: 0;
  visibility: hidden;
  transform: translateY(-42%);
  transition:
    opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    width 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    max-width 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    right 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    visibility 0s 0.7s;
}

/* Visible when JS adds both .doc-stack-visible and .doc-stack-ready */
.doc-stack.doc-stack-visible.doc-stack-ready {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(-50%);
  transition:
    opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.9s cubic-bezier(0.16, 1, 0.3, 1),
    width 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    max-width 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    right 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    visibility 0s;
}

/* Expand on hover */
.doc-stack:hover {
  width: 38vw;
  max-width: 520px;
  right: 3vw;
}

.doc-stack-cards {
  position: relative;
  width: 100%;
  aspect-ratio: 0.72;
  transform-style: preserve-3d;
}

/* --- Individual cards --- */
.doc-card {
  position: absolute;
  inset: 0;
  display: block;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  cursor: pointer;
  transform-origin: center bottom;

  /* Aged paper base */
  background:
    linear-gradient(168deg, #f7f2e8 0%, #ede5d4 40%, #e8ddc8 100%);
  border: 1px solid rgba(160, 140, 100, 0.2);
  border-radius: 2px;

  /* Default: hidden behind stack */
  opacity: 0;
  transform: translateY(0) scale(0.90) rotateX(2deg);
  box-shadow: none;
  filter: brightness(0.1);
  pointer-events: none;

  /* Background cards snap quickly into position */
  transition:
    transform 0.25s ease-out,
    opacity 0.2s ease-out,
    box-shadow 0.2s ease-out,
    filter 0.2s ease-out;
}

.doc-card img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top left;
  mix-blend-mode: multiply;
}

/* Paper texture overlay */
.doc-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 15% 85%, rgba(120, 90, 40, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 85% 15%, rgba(120, 90, 40, 0.04) 0%, transparent 50%);
  pointer-events: none;
  z-index: 1;
}

.doc-card-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.7rem 1rem 0.6rem;
  background: linear-gradient(transparent 0%, rgba(30, 25, 15, 0.65) 100%);
  color: rgba(255, 255, 255, 0.9);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.4s ease 0.15s, transform 0.4s ease 0.15s;
  z-index: 2;
}

/* ---- Active (front) card — fully opaque, solid, smooth entrance ---- */
.doc-card.active {
  z-index: 10;
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1) rotateX(0deg);
  filter: none;
  box-shadow:
    0 2px 6px rgba(0, 0, 0, 0.2),
    0 10px 30px rgba(0, 0, 0, 0.3),
    0 24px 64px rgba(0, 0, 0, 0.2);
  /* Active card gets a slightly longer, smoother transition */
  transition:
    transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.15s ease-out,
    box-shadow 0.35s ease,
    filter 0.15s ease-out;
}

.doc-stack:hover .doc-card.active .doc-card-label {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Cards behind: fully opaque, just dimmed via brightness ---- */
.doc-card[data-offset="1"] {
  z-index: 9;
  opacity: 1;
  pointer-events: none;
  transform: translateY(55px) scale(0.95) rotateX(1deg);
  filter: brightness(0.55);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
}

.doc-card[data-offset="2"] {
  z-index: 8;
  opacity: 1;
  pointer-events: none;
  transform: translateY(105px) scale(0.905) rotateX(1.5deg);
  filter: brightness(0.38);
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.2);
}

.doc-card[data-offset="3"] {
  z-index: 7;
  opacity: 1;
  pointer-events: none;
  transform: translateY(150px) scale(0.865) rotateX(2deg);
  filter: brightness(0.25);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.doc-card[data-offset="4"] {
  z-index: 6;
  opacity: 0.7;
  pointer-events: none;
  transform: translateY(188px) scale(0.83) rotateX(2deg);
  filter: brightness(0.18);
}

.doc-card[data-offset="5"],
.doc-card[data-offset="6"],
.doc-card[data-offset="7"] {
  z-index: 5;
  opacity: 0;
  pointer-events: none;
  transform: translateY(210px) scale(0.81) rotateX(2deg);
}

/* ---- Cards above (already viewed, slipped off top) ---- */
.doc-card[data-offset="-1"] {
  z-index: 9;
  opacity: 1;
  pointer-events: none;
  transform: translateY(-55px) scale(0.95) rotateX(-0.5deg);
  filter: brightness(0.5);
  box-shadow: 0 -1px 8px rgba(0, 0, 0, 0.15);
}

.doc-card[data-offset="-2"] {
  z-index: 8;
  opacity: 1;
  pointer-events: none;
  transform: translateY(-105px) scale(0.905) rotateX(-1deg);
  filter: brightness(0.35);
}

.doc-card[data-offset="-3"] {
  z-index: 7;
  opacity: 0.8;
  pointer-events: none;
  transform: translateY(-150px) scale(0.865) rotateX(-1.5deg);
  filter: brightness(0.22);
}

.doc-card[data-offset="-4"],
.doc-card[data-offset="-5"],
.doc-card[data-offset="-6"],
.doc-card[data-offset="-7"] {
  z-index: 6;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-188px) scale(0.83) rotateX(-1.5deg);
}

/* ---- Hover: zoom the active page ---- */
.doc-stack:hover .doc-card.active {
  box-shadow:
    0 4px 12px rgba(0, 0, 0, 0.2),
    0 12px 36px rgba(0, 0, 0, 0.3),
    0 24px 72px rgba(0, 0, 0, 0.2);
}

/* External link icon — appears on hover */
.doc-card.active::after {
  content: 'Öppna dokument \2197';
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 10px;
  background: rgba(10, 10, 20, 0.7);
  color: rgba(255, 255, 255, 0.85);
  border-radius: 3px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.55rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 3;
}

.doc-stack:hover .doc-card.active::after {
  opacity: 0.8;
  transform: translateY(0);
}

/* ---- Pagination pips ---- */
.doc-stack-pips {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 14px;
  opacity: 0;
  transition: opacity 0.35s ease;
}

.doc-stack:hover .doc-stack-pips {
  opacity: 1;
}

.doc-pip {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.doc-pip.active {
  background: var(--red-thread);
  transform: scale(1.5);
  box-shadow: 0 0 6px rgba(201, 48, 44, 0.4);
}

.doc-pip:hover:not(.active) {
  background: rgba(255, 255, 255, 0.45);
  transform: scale(1.3);
}

/* ---- Page count ---- */
.doc-stack-count {
  text-align: center;
  margin-top: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.55rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  opacity: 0;
  transition: opacity 0.35s ease;
}

.doc-stack:hover .doc-stack-count {
  opacity: 0.7;
}

.chapter-content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--red-thread);
  opacity: 0.5;
  border-radius: 3px 0 0 3px;
}

.chapter-number {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--red-thread);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.chapter .narrator-text {
  margin-top: var(--space-md);
}

/* Chapter state transitions */
.chapter-content {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.chapter.active .chapter-content {
  opacity: 1;
  transform: translateY(0);
}

/* About sections between guided and explore */
#about-aina, #about-team {
  position: relative;
  z-index: var(--z-narrative);
  padding: var(--space-2xl) var(--space-lg);
  background: var(--bg-base);
}

/* Om AINA */
.about-aina-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.about-aina-avatar {
  width: 250px;
  height: 250px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--aina-ai);
  box-shadow: 0 0 40px rgba(138, 164, 255, 0.15);
  flex-shrink: 0;
}

.about-aina-text {
  flex: 1;
}

.about-aina-text h2 {
  margin-bottom: var(--space-md);
}

.about-aina-text .subtitle {
  margin-bottom: var(--space-md);
  font-size: 1.1rem;
}

.about-aina-text p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

/* Teamet */
.team-grid {
  max-width: 900px;
  margin: var(--space-xl) auto 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-lg);
}

.team-section-title {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.team-card {
  background: var(--bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 4px;
  padding: var(--space-lg);
  text-align: center;
  position: relative;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.team-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--red-thread);
  opacity: 0.5;
}

.team-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: var(--space-md);
  border: 2px solid rgba(255, 255, 255, 0.1);
}

.team-name {
  font-family: 'Lexend', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.team-role {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Closing section */
#closing-section {
  position: relative;
  z-index: var(--z-narrative);
  padding: var(--space-2xl) var(--space-lg);
  text-align: center;
  background: var(--bg-base);
}

.closing-tips-link {
  display: inline-block;
  margin-top: var(--space-xl);
  padding: 0.7rem 2rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-family: 'Lexend', sans-serif;
  font-size: 0.9rem;
  font-weight: 400;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  transition: all 0.2s;
}

.closing-tips-link:hover {
  color: var(--text-primary);
  border-color: rgba(201, 48, 44, 0.5);
  background: rgba(201, 48, 44, 0.08);
}

/* Back button (unused, kept for reference) */
.back-to-story {
  display: none;
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-controls);
  padding: 0.5rem 1.5rem;
  background: var(--bg-overlay);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  backdrop-filter: blur(8px);
  transition: all var(--transition-fast);
}

.back-to-story:hover {
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Loading indicator */
.loading-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-base);
  z-index: 10000;
  transition: opacity var(--transition-slow);
}

.loading-overlay.fade-out {
  opacity: 0;
  pointer-events: none;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--aina-ai);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--space-md);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 1024px) {
  .doc-stack {
    width: 30vw;
    right: 2vw;
  }
}

@media (max-width: 768px) {
  .chapter-content {
    max-width: 100%;
  }

  .doc-stack {
    display: none; /* Hide on small screens, too tight */
  }

  .about-aina-inner {
    flex-direction: column;
    text-align: center;
  }

  .about-aina-avatar {
    width: 180px;
    height: 180px;
  }

  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}