/* =========================================================
   Tran + Thomas Design Studio — Portfolio pages
   (loads after styles.css)
   ========================================================= */

/* ---------- Portfolio landing — split hero ---------- */
.split-hero {
  display: flex;
  height: clamp(420px, 68vh, 760px);
  overflow: hidden;
  background: var(--black);
}
.split-pane {
  position: relative;
  flex: 1 1 0;
  flex-grow: 1;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
  font: inherit;
  color: #fff;
  cursor: pointer;
  overflow: hidden;
  transition: flex-grow 0.75s cubic-bezier(0.65, 0, 0.2, 1);
}
.split-hero[data-active="residential"] .split-pane--residential,
.split-hero[data-active="commercial"] .split-pane--commercial { flex-grow: 9; }
.split-hero[data-active="residential"] .split-pane--commercial,
.split-hero[data-active="commercial"] .split-pane--residential { flex-grow: 1; }

.split-pane img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.75s cubic-bezier(0.65, 0, 0.2, 1);
}
.split-pane::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(17, 17, 17, 0.42);
  transition: background 0.4s ease;
}
.split-pane:hover img,
.split-pane:focus-visible img { transform: scale(1.04); }
.split-pane:hover::after,
.split-pane:focus-visible::after { background: rgba(17, 17, 17, 0.28); }
.split-pane:focus-visible { outline: 3px solid var(--accent); outline-offset: -3px; }

.split-pane__caption {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.1rem;
  padding: 1rem;
  text-align: center;
}
.split-pane__name {
  font-family: var(--font-display);
  font-weight: 300;
  text-transform: uppercase;
  font-size: clamp(1.4rem, 3.6vw, 2.7rem);
  letter-spacing: 0.14em;
  line-height: 1;
  white-space: nowrap;
}
.split-pane__cta {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  border: 1px solid rgba(255, 255, 255, 0.7);
  padding: 0.7rem 1.6rem;
  border-radius: 3px;
  transition: background 0.3s ease;
}
.split-pane:hover .split-pane__cta,
.split-pane:focus-visible .split-pane__cta { background: rgba(255, 255, 255, 0.14); }

/* inactive sliver → vertical label, hide button */
.split-hero[data-active="residential"] .split-pane--commercial .split-pane__name,
.split-hero[data-active="commercial"] .split-pane--residential .split-pane__name {
  writing-mode: vertical-rl;
}
.split-hero[data-active="residential"] .split-pane--commercial .split-pane__cta,
.split-hero[data-active="commercial"] .split-pane--residential .split-pane__cta {
  display: none;
}

/* hide grid cards that don't match the active filter */
.project.is-hidden { display: none; }

/* ---------- Gallery filter buttons ---------- */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1.6rem;
}
.filter-btn {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: var(--ink);
  background: none;
  border: 1px solid var(--accent);
  padding: 0.6rem 1.7rem;
  border-radius: 3px;
  cursor: pointer;
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}
.filter-btn:hover:not(.is-active) { background: rgba(181, 159, 126, 0.12); }
.filter-btn.is-active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* =========================================================
   Portfolio detail page
   ========================================================= */

/* ---------- Hero ---------- */
.pf-hero {
  position: relative;
  width: 100%;
  height: clamp(440px, 78vh, 880px);
  overflow: hidden;
  background: var(--black);
}
.pf-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.pf-hero__veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(17, 17, 17, 0.62) 0%,
    rgba(17, 17, 17, 0.15) 45%,
    rgba(17, 17, 17, 0.25) 100%
  );
}
.pf-hero__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: clamp(2rem, 6vw, 4.5rem) var(--gutter);
  text-align: center;
  color: #fff;
}
.pf-hero__eyebrow {
  font-family: var(--font-display);
  font-weight: 400;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.34em;
  color: var(--accent);
  margin: 0 0 1rem;
}
.pf-hero__title {
  font-family: var(--font-display);
  font-weight: 300;
  text-transform: uppercase;
  font-size: clamp(2rem, 6vw, 4rem);
  letter-spacing: 0.1em;
  line-height: 1.1;
  margin: 0;
}

/* ---------- Intro ---------- */
.pf-intro {
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 5rem) var(--gutter) clamp(1.5rem, 4vw, 2.5rem);
  text-align: center;
}
.pf-intro__lead {
  margin: 0;
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  color: var(--body);
}
.pf-intro__meta {
  margin: 2rem 0 0;
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 0.74rem;
  letter-spacing: 0.24em;
  color: var(--muted);
}
.pf-intro__meta span { color: var(--accent); }

/* ---------- Gallery style toggle ---------- */
.style-toggle {
  display: flex;
  justify-content: center;
  gap: clamp(0.6rem, 2vw, 1rem);
  padding: clamp(0.5rem, 3vw, 1.5rem) var(--gutter) 0;
}
.style-toggle__btn {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 0.76rem;
  letter-spacing: 0.22em;
  color: var(--ink);
  background: none;
  border: 1px solid var(--accent);
  padding: 0.8rem 2rem;
  cursor: pointer;
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}
.style-toggle__btn:hover:not(.is-active) { background: rgba(181, 159, 126, 0.12); }
.style-toggle__btn.is-active {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

/* hide whichever gallery is inactive */
.pf-gallery[hidden],
.pf-grid[hidden] { display: none; }

/* ---------- Style Two — featured-style 2-column grid ---------- */
.pf-grid {
  max-width: 1320px;
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 3rem) var(--gutter) clamp(3.5rem, 8vw, 6rem);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(0.75rem, 2vw, 1.25rem);
}
.pcard {
  position: relative;
  margin: 0;
  aspect-ratio: 3 / 2;
  border-radius: 10px;
  overflow: hidden;
  cursor: zoom-in;
}
.pcard:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.pcard img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.pcard__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: clamp(1.25rem, 3vw, 2.25rem);
  text-align: center;
  color: #fff;
  background: rgba(17, 17, 17, 0.55);
  opacity: 0;
  transition: opacity 0.45s ease;
}
.pcard:hover img { transform: scale(1.05); }
.pcard:hover .pcard__overlay { opacity: 1; }
.pcard__rule {
  width: 46px;
  height: 2px;
  background: var(--accent);
  transform: translateY(10px);
  transition: transform 0.45s ease;
}
.pcard:hover .pcard__rule { transform: none; }
.pcard__title {
  font-family: var(--font-display);
  font-weight: 300;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  line-height: 1.2;
  margin: 0;
  transform: translateY(10px);
  transition: transform 0.45s ease 0.05s;
}
.pcard:hover .pcard__title { transform: none; }
.pcard__text {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 34ch;
  margin: 0;
  color: rgba(255, 255, 255, 0.88);
  transform: translateY(10px);
  transition: transform 0.45s ease 0.1s;
}
.pcard:hover .pcard__text { transform: none; }

@media (max-width: 540px) {
  .pf-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .pcard img, .pcard__rule, .pcard__title, .pcard__text { transition: opacity 0.3s ease; }
}

/* ---------- Masonry gallery ---------- */
.pf-gallery {
  max-width: 1320px;
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 3rem) var(--gutter) clamp(3.5rem, 8vw, 6rem);
  columns: 3;
  column-gap: clamp(0.75rem, 2vw, 1.25rem);
}
.pf-gallery figure {
  margin: 0 0 clamp(0.75rem, 2vw, 1.25rem);
  break-inside: avoid;
}
.pf-gallery button {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  cursor: zoom-in;
  border-radius: 10px;
  overflow: hidden;
}
.pf-gallery img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  transition: opacity 0.35s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.pf-gallery button:hover img { transform: scale(1.04); opacity: 0.92; }
.pf-gallery button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(17, 17, 17, 0.92);
  padding: clamp(1rem, 4vw, 3rem);
}
.lightbox.is-open { display: flex; }
.lightbox img {
  max-width: 100%;
  max-height: 88vh;
  border-radius: 6px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.lightbox__btn {
  position: absolute;
  background: rgba(255, 255, 255, 0.85);
  color: var(--black);
  border: 0;
  border-radius: 50%;
  width: 52px;
  height: 52px;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.25s ease;
}
.lightbox__btn:hover { background: #fff; }
.lightbox__close { top: clamp(1rem, 3vw, 2rem); right: clamp(1rem, 3vw, 2rem); font-size: 1.3rem; }
.lightbox__prev { left: clamp(0.75rem, 3vw, 2.25rem); top: 50%; transform: translateY(-50%); }
.lightbox__next { right: clamp(0.75rem, 3vw, 2.25rem); top: 50%; transform: translateY(-50%); }
.lightbox__count {
  position: absolute;
  bottom: clamp(1rem, 3vw, 2rem);
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  color: rgba(255, 255, 255, 0.85);
}

/* ---------- Back link ---------- */
.pf-back {
  display: block;
  text-align: center;
  padding: 0 var(--gutter) clamp(3rem, 6vw, 4.5rem);
}
.pf-back a {
  font-family: var(--font-display);
  text-transform: uppercase;
  text-decoration: none;
  font-size: 0.76rem;
  letter-spacing: 0.24em;
  color: var(--muted);
  border-bottom: 1px solid transparent;
  padding-bottom: 3px;
}
.pf-back a:hover { color: var(--ink); border-color: var(--ink); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .pf-gallery { columns: 2; }
}
@media (max-width: 540px) {
  .pf-gallery { columns: 1; }
  .lightbox__btn { width: 42px; height: 42px; font-size: 1.3rem; }
}
@media (prefers-reduced-motion: reduce) {
  .pf-gallery img { transition: none; }
}