/* ── About ── */
.portfolio__about {
  width: 100%;
  margin: 0 auto;
  padding: 48px 0 0;
  text-align: center;
}

.portfolio__about-photo {
  width: 30%;
  margin: 0 auto 48px;
  border-radius: var(--pf-radius);
  overflow: hidden;
}

.portfolio__about-photo img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--pf-radius);
}

.portfolio__social {
  margin: 0;
  padding: 0 0 8px;
}

.portfolio__social-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0;
}

.portfolio__social-list li {
  padding: 0 15px 30px 0;
}

.portfolio__social-list li:last-child {
  padding-right: 0;
}

.portfolio__social-list a {
  display: block;
  line-height: 0;
  transition: opacity 0.2s ease;
}

.portfolio__social-list a:hover {
  opacity: 0.85;
}

.portfolio__social-list svg {
  width: 30px;
  height: 24px;
  fill: color-mix(in srgb, var(--content-primaryInverse) 53%, transparent);
  vertical-align: middle;
}

.portfolio__social-list a:hover svg {
  fill: color-mix(in srgb, var(--content-primaryInverse) 93%, transparent);
}

.portfolio__about-footer {
  padding: 60px 0 100px;
}

.portfolio__about-caption {
  color: var(--pf-text-muted);
  margin: 0;
  font-family: var(--pf-font);
  font-size: 12px;
  font-weight: 400;
  line-height: 20px;
}

/* ── Back to top ── */
.portfolio__back-top {
  position: fixed;
  right: 40px;
  bottom: 40px;
  z-index: 400;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border: 0;
  border-radius: 60px;
  background: color-mix(in srgb, var(--content-primaryInverse) 10%, transparent);
  color: var(--pf-text);
  padding: 0;
  cursor: pointer;
  font-family: var(--pf-font);
  font-size: 12px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, background-color 0.2s ease;
}

.portfolio__back-top:hover {
  background: color-mix(in srgb, var(--content-primaryInverse) 20%, transparent);
}

.portfolio__back-top.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.portfolio__back-top-arrow {
  font-size: 18px;
  line-height: 1;
  opacity: 0.5;
}

/* ── Mobile nav overlay (class toggle — display:flex must not override [hidden]) ── */
.portfolio__mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 800;
  background: color-mix(in srgb, var(--pf-bg) 98%, transparent);
  display: none;
  align-items: center;
  justify-content: center;
}

.portfolio__mobile-nav.is-open {
  display: flex;
}

.portfolio__mobile-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 40px;
  height: 40px;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.portfolio__mobile-close::before,
.portfolio__mobile-close::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 24px;
  height: 2px;
  background: var(--pf-text);
}

.portfolio__mobile-close::before { transform: translate(-50%, -50%) rotate(45deg); }
.portfolio__mobile-close::after { transform: translate(-50%, -50%) rotate(-45deg); }

.portfolio__mobile-links {
  display: flex;
  flex-direction: column;
  gap: 24px;
  text-align: center;
}

.portfolio__mobile-links a {
  color: var(--pf-text);
  text-decoration: none;
  font-family: var(--pf-font);
  font-size: 22px;
  font-weight: 400;
  line-height: 32px;
}

/* ── Responsive: 932px → 2 columns, 540px → 1 column ── */
@media (max-width: 932px) {
  .portfolio__nav { display: none; }
  .portfolio__hamburger { display: block; }

  .portfolio__logo {
    margin-left: auto;
    margin-right: 0;
  }

  .portfolio__about-photo {
    width: min(70%, 420px);
  }

  .portfolio__social-list li {
    padding: 0 12px 24px 0;
  }

  .portfolio__about-footer {
    padding: 28px 0 40px;
  }

  .portfolio__cover {
    width: calc(50% - 8px);
    margin-right: var(--pf-col-gap);
  }

  .portfolio__cover:nth-child(3n) { margin-right: var(--pf-col-gap); }
  .portfolio__cover:nth-child(2n) { margin-right: 0; }
}

@media (max-width: 540px) {
  .portfolio__header { padding: 0 16px; }
  .portfolio__logo-link { font-size: 12px; letter-spacing: 0.03em; }

  .portfolio__about-photo {
    width: min(85%, 320px);
  }

  .portfolio__social-list li {
    padding: 0 10px 20px 0;
  }

  .portfolio__about-footer {
    padding: 24px 16px 34px;
  }

  .portfolio__cover {
    margin-right: 0 !important;
    width: 100%;
  }
}

/* Figma capture: force mobile layout at 390px */
body.portfolio--mobile-preview {
  max-width: 390px;
  margin: 0 auto;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--content-primaryInverse) 10%, transparent);
}

body.portfolio--mobile-preview .portfolio__nav { display: none; }
body.portfolio--mobile-preview .portfolio__hamburger { display: block; }
body.portfolio--mobile-preview .portfolio__cover {
  margin-right: 0 !important;
  width: 100%;
}