/* ============================================================
   PORTFOLIO THEME — portfolio.css
   Portfolio / Work section styles
   ============================================================ */

/* ─── Portfolio Section ──────────────────────────────────── */
#portfolio {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg2) 100%);
}

/* Section header */
.portfolio__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 56px;
  gap: 32px;
  flex-wrap: wrap;
}
.portfolio__header-left {}

/* Filter tabs */
.filter-tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 9px 22px;
  border: 1px solid var(--color-border);
  background: transparent;
  color: rgba(244,239,230,0.45);
  font-family: var(--font-body);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: none;
  transition: all var(--transition-base);
}
.filter-btn:hover {
  color: var(--color-cream);
  border-color: rgba(201,169,110,0.4);
}
.filter-btn.active {
  background: var(--color-gold);
  color: var(--color-dark);
  border-color: var(--color-gold);
}

/* ─── Grid Layout ────────────────────────────────────────── */
.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
}

/* Span rules for asymmetric layout */
.portfolio__item:nth-child(1) { grid-column: span 7; }
.portfolio__item:nth-child(2) { grid-column: span 5; }
.portfolio__item:nth-child(3) { grid-column: span 4; }
.portfolio__item:nth-child(4) { grid-column: span 8; }
.portfolio__item:nth-child(5) { grid-column: span 6; }
.portfolio__item:nth-child(6) { grid-column: span 6; }

/* ─── Portfolio Card ─────────────────────────────────────── */
.portfolio__item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  overflow: hidden;
  position: relative;
  cursor: none;
  transition: transform 0.45s var(--transition-slow),
              border-color 0.35s ease,
              box-shadow 0.45s ease;
}
.portfolio__item:hover {
  transform: translateY(-8px);
  border-color: rgba(201,169,110,0.28);
  box-shadow: 0 24px 60px rgba(0,0,0,0.4);
}

/* Thumbnail */
.portfolio__thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.portfolio__thumb-inner {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.2rem;
  transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.portfolio__item:hover .portfolio__thumb-inner {
  transform: scale(1.07);
}

/* Thumbnail color themes */
.thumb-blue   { background: linear-gradient(135deg, #0d1b2e 0%, #1a3a5c 100%); }
.thumb-purple { background: linear-gradient(135deg, #1a0d2e 0%, #2e1a4a 100%); }
.thumb-amber  { background: linear-gradient(135deg, #2a1a00 0%, #3d2800 100%); }
.thumb-green  { background: linear-gradient(135deg, #0a1f0d 0%, #1a3d20 100%); }
.thumb-rose   { background: linear-gradient(135deg, #2a0d0d 0%, #4a1a1a 100%); }
.thumb-slate  { background: linear-gradient(135deg, #0d0d2a 0%, #1a1a4a 100%); }

/* Hover overlay */
.portfolio__overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,10,10,0.88);
  backdrop-filter: blur(4px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  opacity: 0;
  transition: opacity 0.38s ease;
}
.portfolio__item:hover .portfolio__overlay { opacity: 1; }

.overlay-circle {
  width: 60px; height: 60px;
  border: 1.5px solid var(--color-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold);
  font-size: 1.3rem;
  transition: all var(--transition-base);
  text-decoration: none;
  transform: scale(0.8);
  transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.portfolio__item:hover .overlay-circle {
  transform: scale(1);
}
.overlay-circle:hover {
  background: var(--color-gold);
  color: var(--color-dark);
}
.overlay-chip {
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold);
  opacity: 0.9;
}

/* Card info */
.portfolio__info {
  padding: 18px 20px 22px;
}
.portfolio__category {
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold);
  opacity: 0.8;
  margin-bottom: 6px;
}
.portfolio__name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-cream);
  line-height: 1.3;
}

/* Filter animation */
.portfolio__item.hidden {
  opacity: 0.18;
  transform: scale(0.97);
  pointer-events: none;
}

/* ─── View All CTA ───────────────────────────────────────── */
.portfolio__footer {
  text-align: center;
  margin-top: 60px;
}

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 960px) {
  .portfolio__grid { grid-template-columns: repeat(2, 1fr); }
  .portfolio__item:nth-child(n) { grid-column: span 1; }
}
@media (max-width: 600px) {
  .portfolio__grid { grid-template-columns: 1fr; }
  .portfolio__header { flex-direction: column; align-items: flex-start; }
}