/* =========================
   VD · Portfolio Single (case study)
   ========================= */

.vd-portfolio-single {
  --vd-project-accent: #ff810a;
  --vd-project-gallery-bg: #0c2931;
  background: var(--vd-paper);
  color: var(--vd-dark);
}

/* ===== Hero ===== */

.vd-portfolio-single__hero {
  padding: clamp(112px, 14vw, 178px) 0 clamp(42px, 6vw, 78px);
}

.vd-portfolio-single__divider {
  display: block;
  width: clamp(28px, 2.6vw, 38px);
  height: 2px;
  background: var(--vd-dark);
  margin-bottom: clamp(28px, 4vw, 56px);
  opacity: 0.85;
}

.vd-portfolio-single__sector {
  margin: clamp(14px, 1.6vw, 20px) 0 0;
  font-size: clamp(12px, 1.1vw, 14px);
  font-weight: 700;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--vd-dark);
  opacity: 0.78;
}

.vd-portfolio-single__meta {
  margin-top: clamp(56px, 8vw, 110px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(24px, 4vw, 56px);
  align-items: end;
}

.vd-portfolio-single__meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: clamp(24px, 3vw, 48px);
  margin: 0;
  padding: 0;
}

.vd-portfolio-single__meta-cell dt {
  font-size: clamp(11px, 1.05vw, 13px);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--vd-mid);
  margin-bottom: 8px;
}

.vd-portfolio-single__meta-cell dd {
  margin: 0;
  font-family: var(--vd-font-ui);
  font-size: clamp(14px, 1.4vw, 17px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--vd-dark);
}

.vd-portfolio-single__visit {
  display: inline-flex;
  align-items: center;
  gap: clamp(14px, 1.6vw, 24px);
  padding: clamp(14px, 1.6vw, 18px) clamp(22px, 2.4vw, 32px) clamp(14px, 1.6vw, 18px) clamp(26px, 2.8vw, 36px);
  background: var(--vd-project-accent);
  color: var(--vd-dark);
  border-radius: 9999px;
  font-family: var(--vd-font-ui);
  font-size: clamp(14px, 1.4vw, 16px);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
  transition: transform var(--vd-duration) var(--vd-ease), box-shadow var(--vd-duration) var(--vd-ease);
}

.vd-portfolio-single__visit svg {
  width: clamp(20px, 2vw, 24px);
  height: clamp(20px, 2vw, 24px);
  transition: transform var(--vd-duration) var(--vd-ease);
}

.vd-portfolio-single__visit:hover,
.vd-portfolio-single__visit:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 18px 30px -18px rgba(8, 28, 34, 0.45);
}

.vd-portfolio-single__visit:hover svg,
.vd-portfolio-single__visit:focus-visible svg {
  transform: translateX(4px);
}

/* ===== Cover ===== */

.vd-portfolio-single__cover {
  padding: 0 0 clamp(72px, 10vw, 130px);
}

.vd-portfolio-single__cover-frame {
  margin: 0;
  overflow: hidden;
  border-radius: clamp(28px, 5vw, 72px);
  background: rgba(12, 41, 49, 0.08);
  aspect-ratio: 16 / 9;
}

.vd-portfolio-single__cover-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== Showcase panel (full-bleed dark con rounded all-around) ===== */

.vd-portfolio-single__showcase {
  background: var(--vd-paper);
  padding: clamp(20px, 4vw, 54px) 0 clamp(80px, 12vw, 140px);
}

.vd-portfolio-single__gallery {
  position: relative;
  margin: 0 calc(50% - 50vw);
  padding: clamp(56px, 9vw, 130px) clamp(28px, 6vw, 96px);
  background: var(--vd-project-gallery-bg);
  border-radius: clamp(28px, 4vw, 56px);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 1.8vw, 24px);
}

.vd-portfolio-single__gallery-item {
  margin: 0;
  overflow: hidden;
  border-radius: clamp(10px, 1vw, 14px);
  background: var(--vd-dark-deep);
  aspect-ratio: 1 / 1;
}

.vd-portfolio-single__gallery-item img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== Sezioni testo ===== */

.vd-portfolio-single__section {
  padding: clamp(56px, 9vw, 130px) 0;
}

.vd-portfolio-single__section--need {
  padding-top: 0;
}

.vd-portfolio-single__section + .vd-portfolio-single__section {
  padding-top: 0;
}

.vd-portfolio-single__section-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: clamp(40px, 6vw, 96px);
  align-items: start;
}

.vd-portfolio-single__section-block {
  position: relative;
  padding-left: clamp(72px, 9vw, 130px);
}

.vd-portfolio-single__section-label {
  position: absolute;
  left: 0;
  top: 6px;
  width: clamp(56px, 7vw, 100px);
  display: inline-block;
  font-family: var(--vd-font-ui);
  font-size: clamp(11px, 1.05vw, 13px);
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--vd-dark);
  line-height: 1.2;
}

.vd-portfolio-single__section-label::before {
  content: '';
  display: block;
  width: 22px;
  height: 2px;
  background: var(--vd-dark);
  margin-bottom: 10px;
}

.vd-portfolio-single__section-headline {
  margin: 0;
  font-family: var(--vd-font-ui);
  font-weight: 400;
  max-width: 20ch;
  font-size: clamp(34px, 4.8vw, 64px);
  line-height: 1.04;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--vd-dark);
  font-stretch: 90%;
  font-variation-settings: 'wdth' 90;
  text-wrap: balance;
}

.vd-portfolio-single__section-headline strong {
  font-weight: 900;
}

.vd-portfolio-single__section-body {
  margin: 0;
  max-width: 92ch;
  font-family: var(--vd-font-ui);
  font-size: clamp(14px, 1.15vw, 16px);
  line-height: 1.65;
  color: var(--vd-dark);
}

.vd-portfolio-single__section-body p {
  margin: 0 0 1.05em;
}

.vd-portfolio-single__section-body p:last-child {
  margin-bottom: 0;
}

.vd-portfolio-single__section-title {
  margin: 0 0 clamp(28px, 3vw, 40px);
  font-family: var(--vd-font-ui);
  font-weight: 900;
  font-size: clamp(28px, 4vw, 56px);
  line-height: 1.02;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--vd-dark);
  font-stretch: 75%;
  font-variation-settings: 'wdth' 75;
}

.vd-portfolio-single__section-block--titled + .vd-portfolio-single__section-block--titled {
  margin-top: clamp(56px, 8vw, 110px);
}

.vd-portfolio-single__section.vd-portfolio-single__text-flow {
  padding-top: clamp(24px, 5vw, 72px);
}

.vd-portfolio-single__text-flow .vd-portfolio-single__section-block + .vd-portfolio-single__section-block {
  margin-top: clamp(64px, 9vw, 120px);
}

.vd-portfolio-single__section-columns {
  max-width: 92ch;
  column-count: 1;
  column-gap: 0;
  font-family: var(--vd-font-ui);
  font-size: clamp(14px, 1.3vw, 16px);
  line-height: 1.7;
  color: var(--vd-dark);
}

.vd-portfolio-single__section-columns p {
  margin: 0 0 1em;
  break-inside: avoid;
}

.vd-portfolio-single__section-columns strong {
  font-weight: 700;
}

/* ===== Palette ===== */

.vd-portfolio-single__palette {
  list-style: none;
  margin: 0 0 clamp(28px, 4vw, 56px);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: clamp(16px, 2vw, 28px);
}

.vd-portfolio-single__swatch {
  display: grid;
  gap: 10px;
}

.vd-portfolio-single__swatch-chip {
  --vd-swatch: var(--vd-dark);
  display: block;
  aspect-ratio: 4 / 3;
  background: var(--vd-swatch);
  border-radius: clamp(12px, 1.4vw, 18px);
  border: 1px solid var(--vd-border-dark);
}

.vd-portfolio-single__swatch-name {
  font-size: clamp(13px, 1.2vw, 15px);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--vd-dark);
}

.vd-portfolio-single__swatch-hex {
  font-size: clamp(11px, 1vw, 13px);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--vd-mid);
  font-feature-settings: 'tnum' 1;
}

/* ===== CTA finale ===== */

.vd-portfolio-single__cta {
  padding: clamp(80px, 12vw, 160px) 0 clamp(100px, 14vw, 180px);
  background: var(--vd-paper);
}

.vd-portfolio-single__cta-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.vd-portfolio-single__cta-title {
  margin: 0 0 clamp(32px, 4vw, 56px);
  max-width: 22ch;
  font-family: var(--vd-font-ui);
  font-weight: 900;
  font-size: clamp(28px, 4.4vw, 60px);
  line-height: 1.05;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--vd-dark);
  font-stretch: 80%;
  font-variation-settings: 'wdth' 80;
}

.vd-portfolio-single__cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(16px, 2vw, 28px);
  align-items: center;
}

.vd-portfolio-single__cta-primary,
.vd-portfolio-single__cta-secondary {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 14px 26px;
  border-radius: 9999px;
  font-family: var(--vd-font-ui);
  font-size: clamp(13px, 1.3vw, 15px);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: transform var(--vd-duration) var(--vd-ease), background var(--vd-duration) ease, color var(--vd-duration) ease;
}

.vd-portfolio-single__cta-primary {
  background: var(--vd-project-accent);
  color: var(--vd-dark);
}

.vd-portfolio-single__cta-primary svg,
.vd-portfolio-single__cta-secondary svg {
  width: 20px;
  height: 20px;
  transition: transform var(--vd-duration) var(--vd-ease);
}

.vd-portfolio-single__cta-primary:hover,
.vd-portfolio-single__cta-primary:focus-visible {
  transform: translateY(-2px);
}

.vd-portfolio-single__cta-primary:hover svg,
.vd-portfolio-single__cta-primary:focus-visible svg {
  transform: translateX(4px);
}

.vd-portfolio-single__cta-secondary {
  background: transparent;
  color: var(--vd-dark);
  border: 1px solid rgba(12, 41, 49, 0.28);
}

.vd-portfolio-single__cta-secondary:hover,
.vd-portfolio-single__cta-secondary:focus-visible {
  border-color: var(--vd-dark);
}

.vd-portfolio-single__cta-secondary:hover svg,
.vd-portfolio-single__cta-secondary:focus-visible svg {
  transform: translateX(-4px);
}

/* ===== Responsive ===== */

@media (max-width: 900px) {
  .vd-portfolio-single__meta {
    grid-template-columns: minmax(0, 1fr);
    align-items: flex-start;
  }

  .vd-portfolio-single__section-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .vd-portfolio-single__section-block {
    padding-left: 0;
  }

  .vd-portfolio-single__section-label {
    position: static;
    width: auto;
    margin-bottom: 16px;
  }

  .vd-portfolio-single__section-label::before {
    display: inline-block;
    vertical-align: middle;
    margin: 0 10px 4px 0;
  }

  .vd-portfolio-single__section-headline {
    max-width: 100%;
    font-size: clamp(28px, 7.5vw, 44px);
    line-height: 1.08;
  }

  .vd-portfolio-single__section-columns {
    column-count: 1;
  }

  .vd-portfolio-single__gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 540px) {
  .vd-portfolio-single__gallery {
    grid-template-columns: minmax(0, 1fr);
    padding: 28px;
  }

  .vd-portfolio-single__cover-frame {
    border-radius: 28px;
  }

  .vd-portfolio-single__meta-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .vd-portfolio-single__visit,
  .vd-portfolio-single__visit svg,
  .vd-portfolio-single__cta-primary,
  .vd-portfolio-single__cta-secondary,
  .vd-portfolio-single__cta-primary svg,
  .vd-portfolio-single__cta-secondary svg {
    transition: none;
    transform: none;
  }
}