/*
 * Gindi Innovations — interactive project page (KK Barbershop)
 * Markup: templates/partials/project_gallery.html; script: js/project-gallery.js.
 *
 * Ivory page, navy text and controls, gold for selected states, markers and
 * fine rules. The page container is nearly full width (about 40px side
 * margins on desktop, 16px on phones). The large photo keeps the
 * photographs' own 3:2 shape (set on the frame from the image size), so
 * nothing is cropped and the markers, placed in % of the photo, stay on
 * their objects at every size. Its width follows the screen height so the
 * whole photo, caption and counter included, fits in the first screen below
 * the navbar and heading (.pg-fit); the thumbnails follow below the fold.
 */

.pg {
  --pg-fade: 280ms; /* keep in sync with FADE_MS in project-gallery.js */
  --pg-gold-line: color-mix(in srgb, var(--gindi-gold) 55%, transparent);
  padding-block: calc(var(--header-h) + clamp(0.625rem, 0.4rem + 0.7vw, 1.125rem)) clamp(2.5rem, 1.75rem + 3vw, 4.5rem);
}

/* Wider than the site's usual container: heading, tabs, photo and
   thumbnails share these edges (16px on phones, ~40-48px on desktop). */
.pg > .container {
  max-width: 120rem;
  padding-inline: clamp(1rem, 0.4rem + 2.4vw, 3rem);
}

/* ---------- Head: back link and name | tabs ---------- */
.pg-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem 2.5rem;
  margin-block-end: clamp(0.625rem, 0.4rem + 0.6vw, 1rem);
}

.pg-back {
  padding-block: 0.25rem;
  color: var(--muted);
}

.pg-back svg {
  transform: scaleX(-1); /* points back */
}

[dir="rtl"] .pg-back svg {
  transform: none;
}

.pg-title {
  margin-block-start: 0.375rem;
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 1.2rem + 1.5vw, 2.75rem);
  font-weight: var(--fw-regular);
  line-height: 1.08;
  text-wrap: balance;
}

.pg-tabs {
  display: flex;
  border-block-end: 1px solid var(--pg-gold-line);
}

.pg-tab {
  position: relative;
  min-height: 2.75rem;
  padding: 0.5rem 1.125rem;
  border: 0;
  background: none;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: color var(--dur-fast) var(--ease-out);
}

.pg-tab::after {
  content: "";
  position: absolute;
  inset-inline: 0.5rem;
  inset-block-end: -1px;
  height: 2px;
  background: var(--gindi-gold);
  transform: scaleX(0);
  transition: transform var(--dur-fast) var(--ease-out);
}

.pg-tab:hover,
.pg-tab[aria-selected="true"] {
  color: var(--gindi-navy);
}

.pg-tab[aria-selected="true"]::after {
  transform: scaleX(1);
}

.pg-tab:focus-visible {
  outline: 2px solid var(--gindi-navy);
  outline-offset: 2px;
}

/* Only the selected tab's panel shows (the script also sets [hidden]). */
.js .pg-panel:not(.is-active) {
  display: none;
}

/* ---------- The large photo ---------- */
/* As wide as fits: the height left in the first screen below the photo's
   top (--pg-above, measured by project-gallery.js; an estimate without it),
   less a 20px margin, times the image's own ratio (--pg-ratio) — but never
   wider than the container, nor narrower than 30rem (phones and short
   screens then simply scroll). Centred; the page container stays wide. */
.pg-fit {
  width: clamp(min(100%, 30rem), calc((100vh - var(--pg-above, 13rem) - 1.25rem) * var(--pg-ratio, 1.5)), 100%);
  width: clamp(min(100%, 30rem), calc((100svh - var(--pg-above, 13rem) - 1.25rem) * var(--pg-ratio, 1.5)), 100%);
  margin-inline: auto;
}

.pg-frame {
  position: relative;
  overflow: hidden;
  background: var(--navy-08);
}

.pg-frame__img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover; /* the frame has the photo's own shape: nothing is cropped */
  transition: opacity var(--pg-fade) ease;
}

.pg-frame__img.is-entering {
  opacity: 0;
  transition: none;
}

/* Caption and counter on a soft shade at the bottom. */
.pg-frame__bar {
  position: absolute;
  inset-inline: 0;
  inset-block-end: 0;
  z-index: 2;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin: 0;
  padding: 2.5rem clamp(0.875rem, 0.5rem + 1.2vw, 1.5rem) clamp(0.75rem, 0.5rem + 0.8vw, 1.125rem);
  background: linear-gradient(to top, rgb(28 44 74 / 0.72), rgb(28 44 74 / 0));
  color: var(--gindi-ivory);
  pointer-events: none;
}

.pg-frame__caption {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 1rem + 0.8vw, 1.75rem);
  line-height: 1.15;
}

.pg-frame__count {
  flex: none;
  font-size: var(--fs-small);
  letter-spacing: 0.14em;
  unicode-bidi: isolate;
}

/* Corner controls: Previous View and Overview (reading start), full screen (end). */
.pg-toolbar {
  position: absolute;
  z-index: 3;
  inset-block-start: clamp(0.625rem, 0.4rem + 0.8vw, 1rem);
  inset-inline-start: clamp(0.625rem, 0.4rem + 0.8vw, 1rem);
  display: flex;
  gap: 0.5rem;
}

.pg-tool,
.pg-expand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-width: 2.75rem;
  min-height: 2.75rem;
  border: 1px solid rgb(200 137 43 / 0.75);
  background: rgb(28 44 74 / 0.72);
  color: var(--gindi-ivory);
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out),
    opacity var(--dur-fast) var(--ease-out);
}

.pg-tool {
  padding-inline: 0.875rem;
  font-family: var(--font-sans);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
}

.pg-expand {
  position: absolute;
  z-index: 3;
  inset-block-start: clamp(0.625rem, 0.4rem + 0.8vw, 1rem);
  inset-inline-end: clamp(0.625rem, 0.4rem + 0.8vw, 1rem);
}

.pg-tool svg {
  flex: none;
  width: 1.125rem;
  height: 1.125rem;
}

.pg-tool .pg-tool__back {
  height: auto;
}

[dir="rtl"] .pg-tool__back {
  transform: scaleX(-1);
}

.pg-expand svg {
  width: 1.125rem;
  height: 1.125rem;
}

.pg-tool:hover:not(:disabled),
.pg-expand:hover {
  border-color: var(--gindi-gold);
  background: var(--gindi-navy);
}

/* Previous View with nowhere to go back to: clearly unavailable. */
.pg-tool:disabled {
  cursor: default;
  opacity: 0.45;
}

/* Overview while showing the overview: marked as the current view. */
.pg-tool[aria-current="true"] {
  border-color: var(--gindi-gold);
  background: rgb(28 44 74 / 0.9);
  color: var(--gindi-gold);
  opacity: 1;
}

.pg-tool:focus-visible,
.pg-expand:focus-visible,
.pg-hotspot:focus-visible {
  outline: 2px solid var(--gindi-yellow);
  outline-offset: 2px;
}

/* ---------- Markers: links to connected views ---------- */
.pg-hotspots {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

.pg-hotspots[hidden] {
  display: none;
}

/* A 44px target centred on the point, around a small gold keystone (the
   logo's own shape). Positioned in physical %, like the photo itself, which
   is never mirrored. The label sits beside the marker. */
.pg-hotspot {
  position: absolute;
  left: var(--x);
  top: var(--y);
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  pointer-events: auto;
  translate: -50% -50%;
}

/* A soft ring so the marker reads on light and dark parts of the photo. */
.pg-hotspot::before {
  content: "";
  position: absolute;
  width: 2.125rem;
  height: 2.125rem;
  border: 1px solid rgb(244 241 236 / 0.9);
  border-radius: 50%;
  background: rgb(28 44 74 / 0.45);
  transition: transform var(--dur-fast) var(--ease-out);
}

.pg-hotspot__mark {
  position: relative;
  width: 1.125rem;
  height: 0.9rem;
  background: var(--gindi-gold);
  clip-path: polygon(0 0, 100% 0, 80% 100%, 20% 100%); /* the logo's keystone */
}

.pg-hotspot:focus-visible::before,
.pg-hotspot.is-revealed::before {
  transform: scale(1.12);
}

@media (hover: hover) {
  .pg-hotspot:hover::before {
    transform: scale(1.12);
  }
}

/* The destination's name: navy and ivory, part of the marker's button (so
   tapping or clicking it opens the view too). Hidden at first; shown on
   mouse hover (only on devices that really hover, so it never sticks after a
   tap), on keyboard focus, and on touch after a first tap (.is-revealed, set
   by project-gallery.js). The script also picks the side that keeps it
   inside the photo (data-place: right, left, above, below) and nudges it
   along if needed (--pg-nudge-x / -y). Escape hides it (.is-quiet). */
.pg-hotspot__label {
  position: absolute;
  top: 50%;
  left: calc(100% - 0.125rem);
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.625rem;
  border: 1px solid rgb(200 137 43 / 0.8);
  background: rgb(28 44 74 / 0.92);
  color: var(--gindi-ivory);
  font-size: 0.875rem;
  font-weight: var(--fw-medium);
  line-height: 1.2;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  translate: 0 calc(-50% + var(--pg-nudge-y, 0px));
  transition: opacity var(--dur-fast) var(--ease-out), visibility 0s linear var(--dur-fast);
}

.pg-hotspot__label svg {
  width: 0.75rem;
  height: 0.75rem;
  color: var(--gindi-gold);
}

/* Default side, before the script measures: towards the middle of the photo. */
.pg-hotspot--right .pg-hotspot__label,
.pg-hotspot[data-place="left"] .pg-hotspot__label {
  left: auto;
  right: calc(100% - 0.125rem);
}

.pg-hotspot[data-place="right"] .pg-hotspot__label {
  left: calc(100% - 0.125rem);
  right: auto;
}

.pg-hotspot[data-place="above"] .pg-hotspot__label,
.pg-hotspot[data-place="below"] .pg-hotspot__label {
  left: 50%;
  right: auto;
  translate: calc(-50% + var(--pg-nudge-x, 0px)) 0;
}

.pg-hotspot[data-place="above"] .pg-hotspot__label {
  top: auto;
  bottom: calc(100% - 0.125rem);
}

.pg-hotspot[data-place="below"] .pg-hotspot__label {
  top: calc(100% - 0.125rem);
}

.pg-hotspot.is-revealed .pg-hotspot__label,
.pg-hotspot:focus-visible:not(.is-quiet) .pg-hotspot__label {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition-delay: 0s;
}

@media (hover: hover) {
  .pg-hotspot:hover:not(.is-quiet) .pg-hotspot__label {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition-delay: 0s;
  }
}

/* ---------- Thumbnails ---------- */
/* All six across the gallery width on desktop; captions wrap to at most
   two lines, in a caption area of the same height for every thumbnail. */
.pg-thumbs {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: clamp(0.5rem, 0.3rem + 0.6vw, 1rem);
  margin: clamp(0.625rem, 0.4rem + 0.6vw, 1rem) 0 0;
  padding: 0;
  list-style: none;
}

.pg-thumb {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 0.5rem;
  width: 100%;
  height: 100%;
  padding: 0.3125rem 0.3125rem 0.5rem;
  border: 1px solid transparent;
  background: none;
  color: var(--muted);
  text-align: center;
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.pg-thumb img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: 0.85;
  transition: opacity var(--dur-fast) var(--ease-out);
}

.pg-thumb__caption {
  min-height: calc(2 * 1.35em);
  font-size: clamp(0.875rem, 0.8rem + 0.2vw, 1rem);
  font-weight: var(--fw-medium);
  line-height: 1.35;
  text-wrap: balance;
}

.pg-thumb__num {
  margin-inline-end: 0.25rem;
  color: var(--gindi-gold);
}

.pg-thumb:hover {
  color: var(--gindi-navy);
}

.pg-thumb:hover img,
.pg-thumb[aria-current="true"] img {
  opacity: 1;
}

/* The selected thumbnail: a thin gold border. */
.pg-thumb[aria-current="true"] {
  border-color: var(--gindi-gold);
  color: var(--gindi-navy);
}

.pg-thumb:focus-visible {
  outline: 2px solid var(--gindi-navy);
  outline-offset: 2px;
}

/* ---------- Concept Visualization ---------- */
/* The note under the concept gallery. */
.pg-concept__caption {
  display: grid;
  gap: 0.25rem;
  margin-block: clamp(1rem, 0.7rem + 0.8vw, 1.5rem) 0;
  padding-block-start: 0.875rem;
  border-block-start: 1px solid var(--pg-gold-line);
  color: var(--muted);
}

.pg-concept__label {
  color: var(--gindi-navy);
}

/* ---------- Without JS: every photo listed ---------- */
.pg-static {
  display: grid;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.pg-static img {
  display: block;
  width: 100%;
  height: auto;
}

.pg-static figcaption {
  margin-block-start: 0.5rem;
  font-family: var(--font-heading);
  font-size: 1.25rem;
}

.js .pg-static,
.no-js .pg-gallery,
.no-js .pg-tabs {
  display: none;
}

.no-js .pg-panel + .pg-panel {
  margin-block-start: 2.5rem;
}

/* ---------- Tablet and phone ---------- */
@media (max-width: 64rem) {
  .pg-head {
    align-items: flex-start;
    flex-direction: column;
  }

  /* A scrollable strip; the selected thumbnail is kept in view by the script. */
  .pg-thumbs {
    display: flex;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scroll-snap-type: x proximity;
    scrollbar-width: thin;
    padding-block-end: 0.25rem;
  }

  .pg-thumbs li {
    flex: 0 0 11rem;
    scroll-snap-align: start;
  }
}

@media (max-width: 40rem) {
  .pg-tabs {
    width: 100%;
  }

  .pg-tab {
    flex: 1 1 0;
    padding-inline: 0.5rem;
  }

  /* Icons alone on narrow photos; the names stay for assistive tech. */
  .pg-tool {
    padding-inline: 0.5rem;
  }

  .pg-tool__text {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }

  .pg-frame__bar {
    padding-block-start: 1.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .pg-frame__img,
  .pg-tab,
  .pg-tab::after,
  .pg-thumb,
  .pg-thumb img,
  .pg-hotspot::before,
  .pg-hotspot__label,
  .pg-tool {
    transition: none;
  }
}