/* ===================================================
   PORTFOLIO — modern asymmetric masonry gallery
   Orange-forward, animated, fully responsive
   =================================================== */

.portfolio {
  background: var(--ink);
  color: var(--paper);
  position: relative;
  overflow: hidden;
  padding-bottom: clamp(100px, 12vw, 160px);
}
.portfolio::before {
  content: '';
  position: absolute;
  top: 10%; left: -200px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(245,106,28,0.18), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.portfolio__filters {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter) 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  position: relative;
  z-index: 2;
}
.chip {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid rgba(250,250,247,0.18);
  color: rgba(250,250,247,0.7);
  transition: all .25s var(--ease);
}
.chip:hover { border-color: var(--orange); color: var(--orange); }
.chip.is-active { background: var(--orange); border-color: var(--orange); color: #fff; }

.portfolio__grid {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: 90px;
  gap: 10px;
  position: relative;
  z-index: 1;
}

.tile {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  cursor: pointer;
  background: var(--ink-3);
  transition: transform .5s var(--ease), opacity .5s var(--ease);
  grid-column: span 4;
  grid-row: span 3;
}
/* Asymmetric bento layout */
.tile[data-size="xl"]  { grid-column: span 6; grid-row: span 5; }
.tile[data-size="l"]   { grid-column: span 6; grid-row: span 4; }
.tile[data-size="m"]   { grid-column: span 4; grid-row: span 4; }
.tile[data-size="s"]   { grid-column: span 4; grid-row: span 3; }
.tile[data-size="wide"]{ grid-column: span 8; grid-row: span 3; }
.tile[data-size="tall"]{ grid-column: span 3; grid-row: span 5; }

.tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .8s var(--ease), filter .4s var(--ease);
  filter: grayscale(0.4) brightness(0.85);
}
.tile::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(11,11,11,0.85) 100%);
  opacity: 0;
  transition: opacity .4s var(--ease);
  z-index: 1;
}
.tile__meta {
  position: absolute;
  left: 20px; right: 20px; bottom: 20px;
  z-index: 2;
  color: #fff;
  transform: translateY(14px);
  opacity: 0;
  transition: transform .4s var(--ease), opacity .4s var(--ease);
  pointer-events: none;
}
.tile__brand {
  font-family: var(--font-display);
  font-size: clamp(20px, 1.6vw, 28px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1;
}
.tile__cat {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--orange);
  margin-top: 6px;
  display: block;
}
.tile__corner {
  position: absolute;
  top: 14px; right: 14px;
  z-index: 2;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--orange);
  display: grid;
  place-items: center;
  color: #fff;
  transform: scale(0) rotate(-45deg);
  transition: transform .35s var(--ease);
  font-size: 14px;
}

.tile:hover img { transform: scale(1.06); filter: grayscale(0) brightness(1); }
.tile:hover::after { opacity: 1; }
.tile:hover .tile__meta { transform: none; opacity: 1; }
.tile:hover .tile__corner { transform: scale(1) rotate(0deg); }

/* filter fade */
.tile.is-hidden { opacity: 0; transform: scale(0.9); pointer-events: none; position: absolute; visibility: hidden; }

/* reveal staggered */
.tile.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.tile.reveal.is-visible { opacity: 1; transform: none; }

/* Responsive layout tweaks */
@media (max-width: 1100px) {
  .portfolio__grid { grid-template-columns: repeat(8, 1fr); grid-auto-rows: 85px; }
  .tile                  { grid-column: span 4; grid-row: span 3; }
  .tile[data-size="xl"]  { grid-column: span 8; grid-row: span 5; }
  .tile[data-size="l"]   { grid-column: span 4; grid-row: span 4; }
  .tile[data-size="m"]   { grid-column: span 4; grid-row: span 3; }
  .tile[data-size="s"]   { grid-column: span 4; grid-row: span 3; }
  .tile[data-size="wide"]{ grid-column: span 8; grid-row: span 3; }
  .tile[data-size="tall"]{ grid-column: span 4; grid-row: span 4; }
}
@media (max-width: 700px) {
  .portfolio__grid { grid-template-columns: repeat(4, 1fr); grid-auto-rows: 80px; gap: 8px; }
  .tile                  { grid-column: span 4; grid-row: span 3; }
  .tile[data-size="xl"]  { grid-column: span 4; grid-row: span 4; }
  .tile[data-size="l"]   { grid-column: span 4; grid-row: span 3; }
  .tile[data-size="m"]   { grid-column: span 2; grid-row: span 3; }
  .tile[data-size="s"]   { grid-column: span 2; grid-row: span 3; }
  .tile[data-size="wide"]{ grid-column: span 4; grid-row: span 3; }
  .tile[data-size="tall"]{ grid-column: span 2; grid-row: span 4; }

  .tile__meta { transform: none; opacity: 1; }
  .tile::after { opacity: 0.7; }
}

/* =============== LIGHTBOX =============== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(5,5,5,0.94);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
  opacity: 0;
  transition: opacity .3s var(--ease);
}
.lightbox.is-open { display: flex; opacity: 1; }
.lightbox__figure {
  margin: 0;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}
.lightbox__figure img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: 0 40px 80px -20px rgba(0,0,0,0.7);
}
.lightbox__figure figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(250,250,247,0.7);
}
.lightbox__close, .lightbox__prev, .lightbox__next {
  position: absolute;
  color: var(--paper);
  font-size: 32px;
  width: 56px; height: 56px;
  border-radius: 50%;
  border: 1px solid rgba(250,250,247,0.2);
  display: grid;
  place-items: center;
  transition: all .2s var(--ease);
}
.lightbox__close { top: 24px; right: 24px; font-size: 28px; line-height: 1; }
.lightbox__prev { left: 24px; top: 50%; transform: translateY(-50%); }
.lightbox__next { right: 24px; top: 50%; transform: translateY(-50%); }
.lightbox__close:hover, .lightbox__prev:hover, .lightbox__next:hover {
  background: var(--orange);
  border-color: var(--orange);
}
@media (max-width: 640px) {
  .lightbox__prev { left: 12px; }
  .lightbox__next { right: 12px; }
  .lightbox__close { top: 12px; right: 12px; }
}