/* ============================================================
   EXPERIMENTS PAGE — experiments.css
   Horizontal scroll gallery walk.
   ============================================================ */

/* ============================================================
   PAGE-LEVEL OVERRIDES
   ============================================================ */
.exp-page {
  overflow: hidden; /* body itself never scrolls — all scrolling is in .exp-wrapper */
}

/* Force nav into its "scrolled" (solid cream) state always —
   there's no vertical scroll to trigger the transition. */
.exp-page .nav {
  --nav-alpha: 1;
  box-shadow: 0 2px 16px rgba(26, 16, 20, 0.1);
  background: rgba(255, 245, 228, 1);
}
.exp-page .nav .nav__logo,
.exp-page .nav .nav__links a {
  color: var(--charcoal);
}
.exp-page .nav .nav__links a:hover {
  color: var(--pink);
}
.exp-page .nav__burger span {
  background: var(--charcoal);
}

/* Active nav link highlight */
.nav__link--active {
  color: var(--pink) !important;
  font-weight: 500;
}

/* ============================================================
   WRAPPER & TRACK
   ============================================================ */
.exp-wrapper {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  overflow-x: auto;
  overflow-y: hidden;
  /* No CSS scroll-snap — handled entirely in JS to avoid
     conflict with custom smooth-scroll animation. */
  scroll-behavior: auto;
  scrollbar-width: none;
}
.exp-wrapper::-webkit-scrollbar {
  display: none;
}

.exp-track {
  display: flex;
  height: 100%;
  width: max-content;
}

/* ============================================================
   INDIVIDUAL PANEL
   ============================================================ */
.exp-panel {
  width: 100vw;
  height: 100%;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Color variants */
.exp-panel--charcoal { background: var(--charcoal); }
.exp-panel--pink     { background: var(--pink); }
.exp-panel--yellow   { background: var(--yellow); }
.exp-panel--cyan     { background: var(--cyan); }
.exp-panel--purple   { background: var(--purple); }
.exp-panel--cream    { background: var(--cream); }

/* Texture overlays — match existing site conventions */
.exp-panel__texture {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: url('../assets/illustrations/webp/old-vintage-grunge-wall-with-peeling-dirty-paint-2026-01-11-09-34-57-utc.webp') center / cover no-repeat;
  mix-blend-mode: multiply;
  opacity: 0.18;
}
.exp-panel__texture--stone {
  background-image: url('../assets/illustrations/webp/old-stone-wall-background-2026-01-05-05-49-00-utc.webp');
  mix-blend-mode: soft-light;
  opacity: 0.35;
}

/* Scattered illustrations sit above texture, below content */
.exp-panel__scatter {
  position: absolute;
  pointer-events: none;
  z-index: 1;
}

/* Giant watermark number */
.exp-panel__watermark {
  position: absolute;
  font-family: var(--font-display);
  font-size: clamp(10rem, 28vw, 26rem);
  font-weight: 900;
  color: rgba(26, 16, 20, 0.05);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 1;
  user-select: none;
  line-height: 1;
  white-space: nowrap;
  clip-path: inset(0); /* contain to panel */
}
.exp-panel--charcoal .exp-panel__watermark,
.exp-panel--purple .exp-panel__watermark {
  color: rgba(255, 245, 228, 0.06);
}

/* Panel number display (bottom-right corner) */
.exp-panel__num-display {
  position: absolute;
  bottom: 1.75rem;
  right: 2rem;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  opacity: 0.35;
  z-index: 10;
  color: var(--charcoal);
}
.exp-panel__num-display--light {
  color: var(--cream);
}

/* ============================================================
   PANEL INNER LAYOUT (work panels)
   ============================================================ */
.exp-panel__inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  padding: 2.5rem clamp(2rem, 6vw, 5rem);
  width: 100%;
  max-width: 1400px;
  position: relative;
  z-index: 2;

  /* Entrance animation — slides in when panel becomes active */
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.55s ease 0.05s, transform 0.55s ease 0.05s;
}

.exp-panel.active .exp-panel__inner {
  opacity: 1;
  transform: translateX(0);
}

/* INFO SIDE */
.exp-panel__tag {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 4px 12px;
  border: 1.5px solid var(--charcoal);
  border-radius: 100px;
  margin-bottom: 1.25rem;
  opacity: 0.65;
  color: var(--charcoal);
}

.exp-panel__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5.5vw, 5rem);
  font-style: italic;
  font-weight: 700;
  line-height: 1.0;
  transform: rotate(-2.5deg);
  display: inline-block;
  transform-origin: left center;
  margin-bottom: 1.5rem;
  color: var(--charcoal);
}
.exp-panel__title--light {
  color: var(--cream);
}

.exp-panel__desc {
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  line-height: 1.75;
  max-width: 40ch;
  color: var(--charcoal);
  opacity: 0.85;
}
.exp-panel__desc--light {
  color: var(--cream);
}

.exp-panel__link {
  display: inline-block;
  margin-top: 1.75rem;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-decoration: underline;
  text-underline-offset: 4px;
  color: var(--charcoal);
  opacity: 0.7;
  transition: opacity 0.2s;
}
.exp-panel__link:hover {
  opacity: 1;
}
.exp-panel__link--light {
  color: var(--cream);
}

/* Light-panel tag overrides */
.exp-panel--charcoal .exp-panel__tag,
.exp-panel--purple .exp-panel__tag {
  border-color: var(--cream);
  color: var(--cream);
}

/* VISUAL FRAME */
.exp-panel__frame {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
  border: 2px solid rgba(26, 16, 20, 0.35);

  /* Entrance — slight horizontal offset, opposite direction to info */
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.55s ease 0.15s, transform 0.55s ease 0.15s;
}

.exp-panel.active .exp-panel__frame {
  opacity: 1;
  transform: translateX(0);
}

/* Inner inset border — ornate double-frame effect */
.exp-panel__frame::before {
  content: '';
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(26, 16, 20, 0.2);
  pointer-events: none;
}

/* Corner diamond accents */
.exp-panel__frame::after {
  content: '✦';
  position: absolute;
  top: -0.7em;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.9rem;
  color: inherit;
  opacity: 0.5;
  line-height: 1;
}

.exp-panel__frame--light {
  border-color: rgba(255, 245, 228, 0.35);
}
.exp-panel__frame--light::before {
  border-color: rgba(255, 245, 228, 0.2);
}
.exp-panel__frame--light::after {
  color: var(--cream);
}

.exp-panel__frame img {
  width: 68%;
  max-height: 52vh;
  object-fit: contain;
  mix-blend-mode: multiply;
  position: relative;
  z-index: 1;
  display: block;
}

/* ============================================================
   INTRO PANEL
   ============================================================ */
.exp-intro {
  position: relative;
  z-index: 2;
  padding: 2rem clamp(2rem, 6vw, 5rem);
  max-width: 700px;

  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease 0.1s, transform 0.6s ease 0.1s;
}
.exp-panel--intro.active .exp-intro {
  opacity: 1;
  transform: translateY(0);
}

.exp-intro__label {
  color: var(--cream);
  opacity: 0.65;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.exp-intro__title {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 10rem);
  font-weight: 900;
  font-style: normal;
  color: var(--cream);
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  transform: rotate(-2deg);
  display: inline-block;
  transform-origin: left center;
}
.exp-intro__title em {
  font-style: italic;
  color: var(--yellow);
}

.exp-intro__sub {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.2vw, 1.35rem);
  font-style: italic;
  color: var(--cream);
  opacity: 0.8;
  max-width: 30ch;
}

/* Scroll hint */
.exp-hint {
  position: absolute;
  bottom: 2.5rem;
  right: 3rem;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--cream);
  opacity: 0.6;
}
.exp-hint .mono {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.exp-hint__arrow {
  font-size: 1.1rem;
  animation: hint-pulse 2s ease-in-out infinite;
  display: inline-block;
}

@keyframes hint-pulse {
  0%, 100% { transform: translateX(0); opacity: 0.6; }
  50%       { transform: translateX(8px); opacity: 1; }
}

/* ============================================================
   EXIT PANEL
   ============================================================ */
.exp-exit__bg-illus {
  position: absolute;
  bottom: -40px;
  right: -60px;
  width: clamp(300px, 45vw, 700px);
  mix-blend-mode: screen;
  opacity: 0.12;
  pointer-events: none;
  z-index: 1;
}

.exp-exit {
  position: relative;
  z-index: 2;
  padding: 2rem clamp(2rem, 6vw, 5rem);
  max-width: 650px;

  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.55s ease 0.05s, transform 0.55s ease 0.05s;
}
.exp-panel--exit.active .exp-exit {
  opacity: 1;
  transform: translateX(0);
}

.exp-exit__label {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cream);
  opacity: 0.45;
  margin-bottom: 1.5rem;
}

.exp-exit__title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 9vw, 7.5rem);
  font-weight: 900;
  color: var(--cream);
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  transform: rotate(-2deg);
  display: inline-block;
  transform-origin: left center;
}
.exp-exit__title em {
  font-style: italic;
  color: var(--yellow);
}

.exp-exit__sub {
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 2vw, 1.2rem);
  font-style: italic;
  color: var(--cream);
  opacity: 0.55;
  margin-bottom: 2.5rem;
}

.exp-exit__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.75rem;
  margin-bottom: 3rem;
}
.exp-exit__links a {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cream);
  text-decoration: underline;
  text-underline-offset: 4px;
  opacity: 0.65;
  transition: opacity 0.2s, color 0.2s;
}
.exp-exit__links a:hover {
  opacity: 1;
  color: var(--yellow);
}

.exp-exit__copy {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--cream);
  opacity: 0.3;
}

/* ============================================================
   PROGRESS BAR
   ============================================================ */
.exp-progress {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(26, 16, 20, 0.15);
  z-index: 200;
}
.exp-progress__fill {
  height: 100%;
  background: var(--pink);
  width: 0%;
  transition: width 0.12s linear;
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .exp-panel__inner,
  .exp-panel__frame,
  .exp-intro,
  .exp-exit {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .exp-hint__arrow {
    animation: none;
  }
}

/* ============================================================
   RESPONSIVE — mobile: revert to vertical scroll
   ============================================================ */
@media (max-width: 640px) {
  .exp-page {
    overflow: auto;
  }
  .exp-wrapper {
    position: static;
    overflow-x: auto;
    overflow-y: auto;
    height: auto;
    scroll-snap-type: none;
  }
  .exp-track {
    flex-direction: column;
    width: 100%;
    height: auto;
  }
  .exp-panel {
    width: 100%;
    height: auto;
    min-height: 100svh;
    scroll-snap-align: none;
    flex-direction: column;
    justify-content: center;
  }
  .exp-panel__inner {
    grid-template-columns: 1fr;
    padding: 5rem 1.5rem 3rem;
    opacity: 1;
    transform: none;
    transition: none;
  }
  .exp-panel__frame {
    opacity: 1;
    transform: none;
    transition: none;
    margin-top: 2rem;
  }
  .exp-panel__frame img {
    width: 55%;
    max-height: 35vh;
  }
  .exp-intro {
    padding: 6rem 1.5rem 3rem;
    opacity: 1;
    transform: none;
    transition: none;
  }
  .exp-exit {
    padding: 4rem 1.5rem 3rem;
    opacity: 1;
    transform: none;
    transition: none;
  }
  .exp-hint {
    display: none;
  }
  .exp-panel__watermark {
    font-size: clamp(7rem, 35vw, 14rem);
  }
  .exp-progress {
    display: none;
  }
}