/* ============ Simple page hero ============ */

.page-hero {
  padding: 6.25rem 0 3.25rem;
  background: var(--page-bg);
}

.page-hero__inner {
  max-width: 980px;
}

.page-hero__eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.75;
  margin-bottom: 0.55rem;
}

.page-hero__title {
  margin: 0 0 0.65rem;
  font-family: var(--font-headline);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.page-hero__text {
  margin: 0;
  max-width: 52ch;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ===================================================== */
/* PORTFOLIO CUBE SECTION                                */
/* ===================================================== */

.portfolio-corner {
  min-height: 100vh;
  background: radial-gradient(circle at 10% 0%, #181818 0, #000 55%);
  color: #f5f5f5;
  padding: 4rem clamp(1.8rem, 6vw, 4.5rem);
  display: flex;
  align-items: center;
  justify-content: center;
}

.portfolio-corner__inner {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr);
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: center;
}

.portfolio-corner__header {
  max-width: 360px;
}

.portfolio-corner__eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.7;
  margin-bottom: 0.6rem;
}

.portfolio-corner__title {
  margin: 0 0 0.6rem;
  font-family: var(--font-headline);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 1.4rem;
}

.portfolio-corner__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(245, 245, 245, 0.76);
}

/* 3D container */
.corner-scene {
  position: relative;
  width: 320px;
  height: 320px;
  margin: 0 auto;
  perspective: 900px;
  transform-style: preserve-3d;
}

.cube {
  --size: 240px;
  --half: calc(var(--size) / 2);

  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--size);
  height: var(--size);
  transform-style: preserve-3d;
  transform: translate(-50%, -50%);
}

.cube__face--front {
  transform: translateZ(var(--half));
}

.cube__face--right {
  transform: rotateY(90deg) translateZ(var(--half));
}

.cube__face--top {
  transform: rotateX(-90deg) translateZ(var(--half));
}

.cube__face {
  position: absolute;
  width: var(--size);
  height: var(--size);
  background: #050505;
  border: 1px solid #111;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cube__grid {
  display: flex;
  flex-direction: column;
  height: 100%;
  justify-content: space-between;
}

.cube__row {
  display: flex;
  flex-wrap: nowrap;
}

.cube__row-inner {
  display: inline-flex;
  flex-shrink: 0;
}

.cube__row-inner span {
  display: inline-block;
  font-family: var(--font-headline);
  color: #ffffff;
  font-size: 1.4rem;
  letter-spacing: 0.22em;
  margin-right: 2ch;
  text-transform: uppercase;
}

/* ===================================================== */
/* FULLSCREEN PORTFOLIO SHELF                            */
/* ===================================================== */

.portfolio-shelf {
  width: 100%;
  height: 100vh;
  padding: 0;
  margin: 0;
  background: #f4f1ef;
  display: flex;
  align-items: stretch;
  justify-content: center;
  overflow: hidden;
}

.portfolio-shelf__inner {
  width: 100%;
  height: 100%;
  display: flex;
  border: 1px solid #111;
  background: #faf7f0;
  overflow: hidden;
}

.portfolio-shelf__item {
  display: flex;
  flex-direction: row;
  height: 100%;
  flex: 0 0 72px;
  border-right: 1px solid #111;
  overflow: hidden;
  transition: flex-basis 0.9s cubic-bezier(0.19, 1, 0.22, 1);
}

.portfolio-shelf__item:last-child {
  border-right: none;
}

.portfolio-shelf__spine {
  width: 72px;
  height: 100%;
  background: transparent;
  border: none;
  border-right: 1px solid #111;
  writing-mode: vertical-rl;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  transition: 0.5s ease;
}

.portfolio-shelf__panel {
  height: 100%;
  flex: 1;
  display: grid;
  grid-template-columns: 1.1fr 1.3fr;
  gap: 3rem;
  padding: 3rem;
  opacity: 0;
  transform: translateX(25px);
  transition: opacity 0.6s ease 0.1s, transform 1s cubic-bezier(0.19, 1, 0.22, 1);
  pointer-events: none;
}

.portfolio-shelf__image {
  height: 100%;
  border: 1px solid #111;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.portfolio-shelf__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.portfolio-shelf__eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.7;
}

.portfolio-shelf__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-headline);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 1.4rem;
}

.portfolio-shelf__text {
  margin: 0 0 0.8rem;
  line-height: 1.7;
  color: rgba(0, 0, 0, 0.65);
}

.portfolio-shelf__cta {
  display: inline-flex;
  margin-top: 0.8rem;
  padding: 0.72rem 1.25rem;
  border-radius: 999px;
  border: 1px solid rgba(17, 17, 17, 0.6);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.portfolio-shelf__cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-subtle);
  background: rgba(17, 17, 17, 0.04);
}

/* active state */
.portfolio-shelf__item.is-active {
  flex: 1 1 auto;
}

.portfolio-shelf__item.is-active .portfolio-shelf__spine {
  background: #111;
  color: #faf7f0;
  letter-spacing: 0.3em;
}

.portfolio-shelf__item.is-active .portfolio-shelf__panel {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

/* responsive */
@media (max-width: 960px) {
  .portfolio-corner__inner {
    grid-template-columns: 1fr;
  }

  .portfolio-shelf__panel {
    grid-template-columns: 1fr;
    gap: 1.4rem;
    padding: 1.6rem;
  }
}