/* ============================================
   GrowMark — Portfolio Section (v2)
   ============================================ */

.portfolio {
  background: var(--clr-bg);
  position: relative;
}

/* ── Filter Tabs ───────────────────────── */
.portfolio__filters {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-2xl);
  flex-wrap: wrap;
}

.portfolio__filter-btn {
  font-size: var(--fs-caption);
  font-weight: var(--fw-medium);
  color: var(--clr-text-muted);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--clr-border);
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-smooth);
  backdrop-filter: blur(10px);
}

.portfolio__filter-btn:hover {
  border-color: var(--clr-primary-30);
  color: var(--clr-text);
  background: rgba(255, 255, 255, 0.05);
}

.portfolio__filter-btn.active {
  background: var(--gradient-primary);
  border-color: transparent;
  color: #000;
  font-weight: var(--fw-bold);
  box-shadow: 0 0 20px rgba(0, 200, 83, 0.2);
}

/* ── Portfolio Grid ────────────────────── */
.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-lg);
  margin-bottom: var(--sp-2xl);
}

/* ── Portfolio Card ────────────────────── */
.portfolio-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--clr-border);
  background: var(--clr-surface);
  cursor: pointer;
  transition: all var(--duration-slow) var(--ease-smooth);
}

/* Hover glow effect */
.portfolio-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--clr-primary-30), transparent 60%);
  z-index: -1;
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease-smooth);
}

.portfolio-card:hover::before {
  opacity: 1;
}

.portfolio-card:hover {
  border-color: rgba(0,200,83,0.2);
  box-shadow: var(--shadow-lg), 0 0 40px rgba(0, 200, 83, 0.12);
}

.portfolio-card__image {
  width: 100%;
  height: 240px;
  overflow: hidden;
  position: relative;
}

.portfolio-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-smooth), filter var(--duration-slow) var(--ease-smooth);
  filter: brightness(0.8) saturate(0.9);
}

.portfolio-card:hover .portfolio-card__image img {
  transform: scale(1.05);
  filter: brightness(1) saturate(1.1);
}

/* ── Card overlay on hover ─────────────── */
.portfolio-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 20%, rgba(5,5,5,0.9) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--sp-lg);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-smooth);
}

.portfolio-card:hover .portfolio-card__overlay {
  opacity: 1;
}

.portfolio-card__overlay-title {
  font-size: var(--fs-body);
  font-weight: var(--fw-bold);
  color: var(--clr-text);
  transform: translateY(10px);
  transition: transform var(--duration-normal) var(--ease-smooth);
}

.portfolio-card:hover .portfolio-card__overlay-title {
  transform: translateY(0);
}

.portfolio-card__overlay-cat {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--clr-primary);
  transform: translateY(10px);
  transition: transform var(--duration-normal) var(--ease-smooth) 0.05s;
}

.portfolio-card:hover .portfolio-card__overlay-cat {
  transform: translateY(0);
}

/* ── Card info (below image) ───────────── */
.portfolio-card__info {
  padding: var(--sp-lg);
  position: relative;
  z-index: 2;
  background: var(--clr-surface);
}

.portfolio-card__brand {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  margin-bottom: 4px;
}

.portfolio-card__brand-logo {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--clr-surface-3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: var(--fw-bold);
  color: var(--clr-primary);
  border: 1px solid var(--clr-border);
}

.portfolio-card__name {
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-text);
}

.portfolio-card__category {
  font-size: var(--fs-caption);
  color: var(--clr-text-muted);
  margin-left: 44px;
}

/* ── Hidden card animation ─────────────── */
.portfolio-card.hidden {
  display: none;
}

.portfolio-card.fade-out {
  opacity: 0;
  transform: scale(0.95);
}

.portfolio-card.fade-in {
  animation: portfolioFadeIn 0.5s var(--ease-smooth) forwards;
}

@keyframes portfolioFadeIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* ── Footer ────────────────────────────── */
.portfolio__footer {
  text-align: center;
}

/* ── Responsive ────────────────────────── */
@media (max-width: 900px) {
  .portfolio__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .portfolio__grid {
    grid-template-columns: 1fr;
  }

  .portfolio-card__image {
    height: 200px;
  }
}