/* ============================================
   PORTFOLIO PAGE — COMPLETE STYLES
   ============================================ */

/* ── Page Hero ── */
.page-hero {
  position: relative;
  padding: 160px 28px 80px;
  text-align: center;
  overflow: hidden;
}

.page-hero-container {
  position: relative;
  z-index: 2;
  max-width: 700px;
  margin: 0 auto;
}

.page-hero-title {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
  letter-spacing: -2px;
  margin: 16px 0;
  line-height: 1;
}

.page-hero-sub {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto;
}

/* ── Portfolio Section ── */
.portfolio-section {
  padding: 40px 28px 80px;
}

.portfolio-container {
  max-width: 1200px;
  margin: 0 auto;
}

/* ── Filter Bar ── */
.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 16px;
}

.filter-btn {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 22px;
  border-radius: 50px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.filter-btn i { font-size: 0.8rem; }

.filter-btn:hover {
  border-color: var(--accent-purple);
  color: var(--accent-purple);
  background: rgba(139,92,246,0.08);
}

.filter-btn.active {
  border-color: var(--accent-purple);
  color: var(--accent-purple);
  background: rgba(139,92,246,0.12);
  box-shadow: 0 0 16px rgba(139,92,246,0.15);
}

/* ── Portfolio Meta ── */
.portfolio-meta {
  text-align: center;
  margin-bottom: 40px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ── Portfolio Grid ── */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

/* ── Project Card ── */
.project-card {
  border-radius: 20px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
  cursor: pointer;
  position: relative;
  backdrop-filter: blur(10px);
  animation: cardFadeIn 0.5s ease both;
}

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

.project-card:hover {
  border-color: rgba(139,92,246,0.4);
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(139,92,246,0.15),
              0 0 0 1px rgba(139,92,246,0.1);
}

/* Featured Badge */
.project-card.featured::before {
  content: '⭐ Featured';
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 3;
  padding: 4px 12px;
  border-radius: 50px;
  background: rgba(234,179,8,0.15);
  border: 1px solid rgba(234,179,8,0.3);
  font-size: 0.72rem;
  font-weight: 700;
  color: #eab308;
  backdrop-filter: blur(10px);
}

/* Card Image */
.card-img-wrap {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: linear-gradient(135deg,
    rgba(139,92,246,0.15),
    rgba(6,182,212,0.1)
  );
}

.card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

/* No image placeholder */
.card-img-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: rgba(139,92,246,0.3);
}

/* Hover Overlay */
.card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,10,15,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  backdrop-filter: blur(4px);
}

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

.overlay-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 28px;
  border-radius: 50px;
  background: linear-gradient(135deg, var(--accent-purple), #7c3aed);
  color: #fff;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transform: translateY(10px);
  transition: all 0.3s ease;
  text-decoration: none;
  box-shadow: 0 0 30px rgba(139,92,246,0.4);
}

.project-card:hover .overlay-btn {
  transform: translateY(0);
}

.overlay-btn:hover {
  transform: scale(1.05) !important;
  box-shadow: 0 0 40px rgba(139,92,246,0.6);
}

/* Card Body */
.card-body {
  padding: 24px;
}

.card-category {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.card-category::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 6px var(--accent-cyan);
}

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.35;
  transition: color 0.3s ease;
}

.project-card:hover .card-title {
  color: var(--accent-purple);
}

.card-desc {
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Tech Tags */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.card-tag {
  padding: 3px 10px;
  border-radius: 50px;
  background: rgba(139,92,246,0.08);
  border: 1px solid rgba(139,92,246,0.15);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-purple);
  transition: all 0.2s ease;
}

.card-tag:hover {
  background: rgba(139,92,246,0.15);
  border-color: var(--accent-purple);
}

/* Card Footer */
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}

.card-links {
  display: flex;
  gap: 10px;
}

.card-link {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color 0.3s ease;
  text-decoration: none;
}

.card-link:hover { color: var(--accent-purple); }

.card-link i { font-size: 0.85rem; }

.card-arrow {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--text-secondary);
  transition: all 0.3s ease;
  text-decoration: none;
}

.project-card:hover .card-arrow {
  border-color: var(--accent-purple);
  color: var(--accent-purple);
  background: rgba(139,92,246,0.1);
  transform: rotate(45deg);
}

/* ── Skeleton Loaders ── */
.project-card-skeleton {
  border-radius: 20px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  overflow: hidden;
}

.skeleton-img {
  height: 220px;
  background: linear-gradient(
    105deg,
    rgba(139,92,246,0.05) 40%,
    rgba(139,92,246,0.1) 50%,
    rgba(139,92,246,0.05) 60%
  );
  background-size: 200% 100%;
  animation: shimmer 1.8s infinite;
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position:  200% 0; }
}

.skeleton-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.skeleton-line {
  height: 14px;
  border-radius: 7px;
  background: rgba(139,92,246,0.08);
  animation: shimmer 1.8s infinite;
  background-size: 200% 100%;
}

.skeleton-line.long   { width: 80%; }
.skeleton-line.medium { width: 60%; }

.skeleton-tags {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.skeleton-tag {
  height: 24px;
  width: 60px;
  border-radius: 50px;
  background: rgba(139,92,246,0.06);
  animation: shimmer 1.8s infinite;
  background-size: 200% 100%;
}

/* ── Empty State ── */
.portfolio-empty {
  text-align: center;
  padding: 80px 20px;
  grid-column: 1 / -1;
}

.empty-icon {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  background: rgba(139,92,246,0.1);
  border: 1px solid rgba(139,92,246,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--accent-purple);
  margin: 0 auto 20px;
  animation: iconPulse 3s ease-in-out infinite;
}

.portfolio-empty h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.portfolio-empty p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ── CTA Section ── */
.portfolio-cta {
  padding: 80px 28px;
  text-align: center;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.cta-inner {
  max-width: 560px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-inner p {
  color: var(--text-secondary);
  margin-bottom: 28px;
  font-size: 1rem;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .portfolio-grid { grid-template-columns: 1fr; }
  .filter-bar { gap: 8px; }
  .filter-btn { padding: 8px 16px; font-size: 0.82rem; }
  .portfolio-section { padding: 40px 16px 60px; }
}

/* ── Portfolio Hero Particles ── */
.portfolio-hero {
  position: relative;
  overflow: hidden;
}

.portfolio-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.portfolio-particle {
  position: absolute;
  border-radius: 50%;
  opacity: 0;
  animation: ppFloat linear infinite;
}

@keyframes ppFloat {
  0%   { transform: translateY(100%); opacity: 0; }
  10%  { opacity: 0.7; }
  90%  { opacity: 0.3; }
  100% { transform: translateY(-50px); opacity: 0; }
}

.page-hero-container {
  position: relative;
  z-index: 2;
}

/* ── Filter System ── */
.filter-bar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 16px;
}

.filter-main-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.filter-sub-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 12px 20px;
  border-radius: 12px;
  background: rgba(139,92,246,0.05);
  border: 1px solid rgba(139,92,246,0.12);
  animation: subFilterFadeIn 0.3s ease;
}

@keyframes subFilterFadeIn {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.sub-filter-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 5px;
}

.sub-filter-label i {
  color: var(--accent-purple);
  font-size: 0.65rem;
}

.filter-sub-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: 50px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.filter-sub-btn i { font-size: 0.8rem; }

.filter-sub-btn:hover,
.filter-sub-btn.active {
  border-color: var(--accent-purple);
  color: var(--accent-purple);
  background: rgba(139,92,246,0.1);
}