/* =========================================================
   v2 - Projects page: photo mosaic + fullscreen viewer
   Builds on styles.css
   ========================================================= */

.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- shorter page hero ---------- */
.hero--page { min-height: min(64vh, 600px); padding-bottom: clamp(4rem, 8vw, 5.5rem); }
.hero--page .hero__title { font-size: clamp(2.6rem, 1.2rem + 5.6vw, 5.6rem); }

/* ---------- sticky filter bar ---------- */
.filters { position: sticky; top: 70px; z-index: 50; background: rgba(255,255,255,.94); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.filters__inner { display: flex; align-items: center; gap: 1.2rem; min-height: 68px; }
.filters__chips { display: flex; gap: .5rem; overflow-x: auto; scrollbar-width: none; padding: .6rem 0; flex: 1; }
.filters__chips::-webkit-scrollbar { display: none; }
.filters__count { font-family: var(--font-head); font-weight: 700; font-size: .78rem; color: var(--muted); white-space: nowrap; }
.chip {
  white-space: nowrap; padding: .55rem 1.05rem; border-radius: 99px; border: 1px solid var(--line); background: #fff;
  font-family: var(--font-head); font-weight: 700; font-size: .78rem; color: var(--navy);
  transition: background var(--t), color var(--t), border-color var(--t);
}
.chip:hover { border-color: var(--navy); }
.chip.is-on { background: var(--navy); border-color: var(--navy); color: #fff; }

/* ---------- mosaic ---------- */
.pindex { padding: clamp(1.5rem, 3vw, 2.5rem) 0 clamp(4rem, 8vw, 6.5rem); }
.gallery {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(6, 1fr); grid-auto-rows: clamp(90px, 9vw, 130px); grid-auto-flow: dense; gap: 10px;
}
.gtile--xl { grid-column: span 4; grid-row: span 4; }
.gtile--l  { grid-column: span 4; grid-row: span 3; }
.gtile--m  { grid-column: span 3; grid-row: span 3; }
.gtile--s  { grid-column: span 2; grid-row: span 2; }
.gtile--t  { grid-column: span 2; grid-row: span 3; }
.gtile--full { grid-column: span 6; grid-row: span 4; }
.gallery.is-in .gtile { animation: tileIn .6s var(--ease) both; animation-delay: calc(var(--i) * 60ms); }
@keyframes tileIn { from { opacity: 0; transform: translateY(18px) scale(.98); } to { opacity: 1; transform: none; } }

.gtile a { position: relative; display: block; width: 100%; height: 100%; overflow: hidden; background: var(--navy); }
.gtile img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease), opacity .4s var(--ease); }
.gtile a::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(8,11,51,.85) 0%, rgba(8,11,51,0) 45%); transition: opacity .4s var(--ease); }
.gtile__cap { position: absolute; left: 0; right: 0; bottom: 0; z-index: 1; padding: 1rem 1.1rem 1.1rem; display: flex; flex-direction: column; }
.gtile__cap .tag { color: var(--mint); margin-bottom: .2rem; font-size: .64rem; }
.gtile__title { font-family: var(--font-head); font-weight: 900; font-style: italic; text-transform: uppercase; color: #fff; line-height: 1; font-size: 1rem; transition: transform .4s var(--ease); }
.gtile--xl .gtile__title, .gtile--l .gtile__title, .gtile--full .gtile__title { font-size: clamp(1.3rem, 1rem + 1vw, 2rem); }
.gtile--xl .gtile__cap, .gtile--l .gtile__cap, .gtile--full .gtile__cap { padding: 1.4rem 1.6rem 1.5rem; }
.gtile__more {
  position: absolute; right: 1rem; top: 1rem; z-index: 1;
  background: var(--mint); color: var(--navy); font-family: var(--font-head); font-weight: 800; font-size: .7rem; letter-spacing: .06em; text-transform: uppercase;
  padding: .45rem .75rem; opacity: 0; transform: translateY(-6px); transition: opacity .3s var(--ease), transform .3s var(--ease);
}
.gtile a:hover img, .gtile a:focus-visible img { transform: scale(1.06); }
.gtile a:hover .gtile__title, .gtile a:focus-visible .gtile__title { transform: translateY(-3px); }
.gtile a:hover .gtile__more, .gtile a:focus-visible .gtile__more { opacity: 1; transform: none; }
.gtile a:focus-visible { outline: 3px solid var(--mint-600); outline-offset: 3px; }

/* =========================================================
   VIEWER (<dialog>) - dark, photo first
   ========================================================= */
body.has-case { overflow: hidden; }
.viewer {
  position: fixed; inset: 0; width: 100%; height: 100%; max-width: 100%; max-height: 100%; margin: 0; padding: 0; border: none;
  background: #05072a; color: rgba(255,255,255,.75);
  display: none; grid-template-rows: 1fr auto;
}
.viewer[open] { display: grid; animation: fadeIn .3s var(--ease) both; }
.viewer::backdrop { background: #05072a; }
@keyframes fadeIn { from { opacity: 0; } }

.viewer__stage { position: relative; min-height: 0; display: grid; grid-template: minmax(0, 1fr) / minmax(0, 1fr); padding: clamp(3.5rem, 6vw, 4.5rem) clamp(1rem, 6vw, 5rem) 1rem; }
.viewer__img { width: 100%; height: 100%; object-fit: contain; user-select: none; filter: drop-shadow(0 30px 60px rgba(0,0,0,.45)); }
.viewer__img.is-in { animation: imgIn .5s var(--ease) both; }
@keyframes imgIn { from { opacity: 0; transform: scale(.97); } }

.viewer__arrow {
  position: absolute; top: 50%; translate: 0 -50%; width: 3.4rem; height: 3.4rem; display: grid; place-items: center;
  border-radius: 50%; background: rgba(255,255,255,.1); color: #fff; font-size: 1.3rem; transition: background var(--t), color var(--t);
}
.viewer__arrow[hidden], .viewer__path[hidden] { display: none; }
.viewer__arrow:hover { background: var(--mint); color: var(--navy); }
.viewer__arrow--prev { left: clamp(.5rem, 2vw, 1.5rem); }
.viewer__arrow--next { right: clamp(.5rem, 2vw, 1.5rem); }
.viewer__count { position: absolute; left: 50%; bottom: -.2rem; translate: -50% 0; font-family: var(--font-head); font-weight: 700; font-size: .75rem; letter-spacing: .1em; color: rgba(255,255,255,.5); }

.viewer__close {
  position: absolute; right: 1rem; top: 1rem; width: 3rem; height: 3rem; display: grid; place-items: center; z-index: 2;
  border-radius: 50%; background: #fff; color: var(--navy); transition: transform var(--t), background var(--t);
}
.viewer__close svg { width: 20px; height: 20px; }
.viewer__close:hover { transform: rotate(90deg); background: var(--mint); }

.viewer__bar {
  display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 1.2rem clamp(1.5rem, 4vw, 3rem);
  padding: 1.3rem clamp(1rem, 6vw, 5rem) 1.6rem; border-top: 1px solid rgba(255,255,255,.1);
}
.viewer__info .tag { color: var(--mint); margin-bottom: .25rem; }
.viewer__title { color: #fff; font-weight: 900; font-style: italic; text-transform: uppercase; font-size: clamp(1.4rem, 1.1rem + 1.2vw, 2.1rem); line-height: 1; }
.viewer__line { margin-top: .4rem; font-size: .98rem; }

/* compact 9-step strip */
.viewer__path { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(9, 14px); gap: 4px; position: relative; padding-top: 1.3rem; }
.viewer__path::before { content: attr(data-label); position: absolute; top: 0; left: 0; white-space: nowrap; font-family: var(--font-head); font-weight: 700; font-size: .62rem; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,.45); }
.viewer__path li { height: 14px; background: rgba(255,255,255,.12); }
.viewer__path li.is-on { background: var(--mint); }

.viewer__actions { display: flex; align-items: center; gap: 1.2rem; }
.viewer__proj { font-family: var(--font-head); font-weight: 700; font-size: .8rem; color: #fff; white-space: nowrap; transition: color var(--t); }
.viewer__proj:hover { color: var(--mint); }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .viewer__bar { grid-template-columns: 1fr auto; }
  .viewer__path { display: none; }
}
@media (max-width: 720px) {
  .filters__count { display: none; }
  .gallery { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 120px; gap: 8px; }
  .gtile--xl, .gtile--l, .gtile--full, .gtile--t { grid-column: span 2; grid-row: span 2; }
  .gtile--m, .gtile--s { grid-column: span 1; grid-row: span 2; }
  .gtile__more { display: none; }
  .viewer__stage { padding: 4rem .5rem .5rem; }
  .viewer__arrow { display: none; }
  .viewer__bar { grid-template-columns: 1fr; }
  .viewer__actions { justify-content: space-between; }
}
@media (prefers-reduced-motion: reduce) {
  .gallery.is-in .gtile, .viewer[open], .viewer__img.is-in { animation: none; }
}