/* ============================================================
   portfolio.css — Portfolio / musics page
   ============================================================ */

.portfolio-hero {
  padding: 9rem clamp(1rem, 3vw, 2.5rem) 4rem;
  text-align: center;
}

.portfolio-hero h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 300;
  margin-bottom: 1rem;
}

.portfolio-hero p {
  font-size: 0.95rem;
  max-width: 480px;
  margin: 0 auto;
  color: var(--white-dim);
}

/* ---------- Category nav ---------- */
.category-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  padding: 0 clamp(1rem, 3vw, 2.5rem) 3rem;
  flex-wrap: wrap;
}

.category-nav a {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white-dim);
  padding: 0.6rem 1.25rem;
  border: 1px solid transparent;
  border-radius: 100px;
  transition: all var(--transition);
}

.category-nav a:hover,
.category-nav a.active {
  color: var(--white);
  border-color: var(--border-light);
  background: var(--surface);
}

/* ---------- Portfolio sections ---------- */
.portfolio-section {
  padding: 2rem clamp(1rem, 3vw, 2.5rem) 5rem;
  max-width: 1800px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}

.portfolio-section:first-of-type {
  border-top: none;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 300;
}

.section-count {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--white-dim);
  font-family: var(--font-body);
  font-weight: 400;
}

/* ---------- Horizontal scroll track ---------- */
.scroll-track-wrap {
  position: relative;
  overflow: hidden;
}

.scroll-track {
  display: flex;
  gap: 1.25rem;
  overflow-x: auto;
  padding-bottom: 1.25rem;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
  cursor: grab;
}

.scroll-track:active {
  cursor: grabbing;
}

.scroll-track::-webkit-scrollbar {
  height: 3px;
}
.scroll-track::-webkit-scrollbar-track {
  background: transparent;
}
.scroll-track::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
}

/* ---------- Portfolio card ---------- */
.p-card {
  flex: 0 0 360px;
  scroll-snap-align: start;
  position: relative;
  cursor: pointer;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.p-card:hover {
  border-color: var(--border-light);
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}

.p-card-thumb {
  position: relative;
  overflow: hidden;
}

.p-card-thumb img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
  transition: transform 0.5s cubic-bezier(0.4,0,0.2,1);
}

.p-card:hover .p-card-thumb img {
  transform: scale(1.05);
}

.p-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(8,10,12,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.p-card:hover .p-card-overlay {
  background: rgba(8,10,12,0.05);
}

.p-play {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1.5px solid rgba(244,240,235,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  background: rgba(8,10,12,0.25);
  transition: all var(--transition);
}

.p-card:hover .p-play {
  border-color: var(--accent);
  background: rgba(45,199,142,0.18);
  transform: scale(1.1);
}

.p-play svg {
  width: 16px;
  height: 16px;
  fill: var(--white);
  margin-left: 2px;
  transition: fill var(--transition);
}

.p-card:hover .p-play svg {
  fill: var(--accent);
}

.p-card-body {
  padding: 1.1rem 1.25rem 1.25rem;
}

.p-card-title {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--white);
  margin-bottom: 0.4rem;
  line-height: 1.4;
}

.p-card-meta {
  font-size: 0.72rem;
  color: var(--white-dim);
  letter-spacing: 0.05em;
  line-height: 1.5;
}

.p-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

.p-tag {
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  border: 1px solid var(--border-light);
  color: var(--white-dim);
}

.p-tag--accent {
  border-color: rgba(45,199,142,0.3);
  color: var(--accent);
  background: var(--accent-dim);
}

/* ---------- Back to top ---------- */
.back-top {
  text-align: center;
  padding: 1rem 0 4rem;
}

.back-top a {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--white-dim);
  text-decoration: none;
  transition: color 0.3s ease;
}

.back-top a:hover { color: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 680px) {
  .p-card {
    flex: 0 0 260px;
  }
}

@media (max-width: 400px) {
  .p-card {
    flex: 0 0 230px;
  }
}

@media (max-width: 340px) {
  .p-card {
    flex: 0 0 200px;
  }
}