/**
 * projects.css
 * ─────────────────────────────────────────────────────────────────────────────
 * Projects section: filterable category buttons + responsive card grid.
 * Cards show thumbnail, title, description, tech tags, and action links.
 * ─────────────────────────────────────────────────────────────────────────────
 */

/* ── FILTER BUTTONS ─────────────────────────────────────────────
   Category filter pills above the project grid.
──────────────────────────────────────────────────────────────── */
.project-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.filter-btn {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.filter-btn:hover {
  color: var(--color-text-primary);
  border-color: var(--color-border-light);
  background: var(--color-bg-card-hover);
}

.filter-btn.active {
  color: var(--color-text-inverse);
  background: var(--gradient-accent);
  border-color: transparent;
  box-shadow: 0 4px 12px rgba(0, 212, 170, 0.3);
}

/* ── PROJECTS GRID ──────────────────────────────────────────────
   Responsive 2-column grid of project cards.
──────────────────────────────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-6);
}

/* ── PROJECT CARD ───────────────────────────────────────────────
   Individual project card with thumbnail, info, and links.
──────────────────────────────────────────────────────────────── */
.project-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition:
    border-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.project-card:hover {
  border-color: var(--color-accent-border);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}

/* Hidden state for filtered-out cards */
.project-card.hidden {
  display: none;
}

/* Featured card gets a subtle accent border */
.project-card.featured {
  border-color: var(--color-accent-border);
}

.project-card.featured::before {
  content: 'Featured';
  display: block;
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-text-inverse);
  background: var(--gradient-accent);
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  z-index: 2;
}

.project-card.featured {
  position: relative;
}

/* ── CARD THUMBNAIL ─────────────────────────────────────────────
   Project screenshot/image area.
──────────────────────────────────────────────────────────────── */
.project-thumbnail {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-bg-card-hover);
  position: relative;
}

.project-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-thumbnail img {
  transform: scale(1.05);
}

/* Overlay on hover */
.project-thumbnail-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 212, 170, 0.1);
  opacity: 0;
  transition: opacity var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-card:hover .project-thumbnail-overlay {
  opacity: 1;
}

/* ── CARD BODY ──────────────────────────────────────────────────
   Text content below the thumbnail.
──────────────────────────────────────────────────────────────── */
.project-body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

.project-title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  line-height: var(--leading-snug);
}

.project-description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  flex: 1;
}

/* Status badge */
.project-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
}

.project-status.production {
  color: var(--color-success);
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.project-status.completed {
  color: var(--color-accent-2);
  background: var(--color-accent-2-dim);
  border: 1px solid rgba(79, 142, 247, 0.3);
}

.project-status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* Tech stack tags */
.project-tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ── CARD FOOTER ────────────────────────────────────────────────
   Action links: GitHub, Demo, Case Study.
──────────────────────────────────────────────────────────────── */
.project-footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-primary);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.project-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent-border);
  background: var(--color-accent-dim);
}

.project-link svg {
  width: 14px;
  height: 14px;
}