/* ==========================================================================
   Home - Hero
   ========================================================================== */

.hero {
  padding-block: 8rem 5rem;
  padding-inline: var(--container-padding-x);
}

.hero__inner {
  max-width: var(--max-width-content);
  margin-inline: auto;
  text-align: center;
}

.hero__title {
  margin-bottom: 1.25rem;
}

.hero__description {
  margin-top: 0.5rem;
  margin-bottom: 2rem;
  font-size: var(--fs-medium);
  color: var(--color-text);
  line-height: var(--lh-loose);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.hero__meta {
  margin-top: 2rem;
  text-align: center;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--color-gray-400);
}

.hero__meta-disciplines {
  font-weight: var(--fw-medium);
  color: var(--color-gray-600);
}

@media (max-width: 991px) {
  .hero { padding-block: 5rem 3rem; }
  .hero__meta { font-size: 0.8125rem; }
}

/* ==========================================================================
   Home - Design Preview (horizontal scroll showcase)
   ========================================================================== */

.design-preview {
  padding-block: 4rem 5rem;
}

.design-preview__container {
  width: 100%;
  max-width: var(--max-width-page);
  margin-inline: auto;
  padding-inline: var(--container-padding-x);
}

.design-preview__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.design-preview__intro {
  max-width: 36rem;
}

.design-preview__title {
  margin: 0 0 0.5rem;
  font-size: 2rem;
  font-weight: var(--fw-medium);
  line-height: var(--lh-tight);
}

.design-preview__sub {
  font-size: var(--fs-medium);
  color: var(--color-text);
  line-height: var(--lh-loose);
}

.design-preview__nav {
  display: flex;
  gap: 0.5rem;
}

.design-preview__btn {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--color-gray-200);
  background-color: var(--color-white);
  color: var(--color-black);
  transition: background-color var(--duration-base) var(--ease),
              border-color var(--duration-base) var(--ease),
              opacity var(--duration-base) var(--ease);
}

.design-preview__btn:hover { background-color: var(--color-gray-100); }
.design-preview__btn:active { background-color: var(--color-gray-softer); }

.design-preview__btn svg {
  width: 18px;
  height: 18px;
}

/* Viewport: wraps the track and provides edge fade gradients */
.design-preview__viewport {
  position: relative;
  width: 100%;
  max-width: var(--max-width-page);
  margin-inline: auto;
}

.design-preview__viewport::before,
.design-preview__viewport::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: var(--container-padding-x);
  pointer-events: none;
  z-index: 2;
}

.design-preview__viewport::before {
  left: 0;
  background: linear-gradient(to right,
    var(--color-white) 30%,
    rgba(255, 255, 255, 0));
}

.design-preview__viewport::after {
  right: 0;
  background: linear-gradient(to left,
    var(--color-white) 30%,
    rgba(255, 255, 255, 0));
}

/* The horizontal scroll track */
.design-preview__track {
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 4px var(--container-padding-x);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: var(--container-padding-x);
  scrollbar-width: none;
  -ms-overflow-style: none;
  cursor: grab;
  list-style: none;
}

.design-preview__track::-webkit-scrollbar { display: none; }

.design-preview__track.is-dragging {
  cursor: grabbing;
  scroll-behavior: auto;
  user-select: none;
}

/* The <li> wrapper is the actual flex item — drives uniform card width */
.design-preview__track > li {
  flex: 0 0 25%; /* 30% smaller than the previous 36% */
  scroll-snap-align: start;
  list-style: none;
}

/* Cards */
.preview-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
  outline: none;
}

.preview-card:focus-visible .preview-card__media {
  box-shadow: 0 0 0 3px rgba(90, 87, 255, 0.35);
}

.preview-card__media {
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  overflow: hidden;
  outline: 1px solid #f2f2f2;
  outline-offset: -1px;
}

.preview-card__image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;       /* fill the card; crop overflow as needed */
  object-position: center;
  transition: transform 0.5s var(--ease);
  pointer-events: none;    /* prevent native image drag from blocking the track drag */
}

.preview-card:hover .preview-card__image {
  transform: scale(1.04);
}

.preview-card__label {
  padding-inline: 0.5rem;
  font-size: 0.875rem;
  font-weight: var(--fw-medium);
  color: var(--color-gray-600);
  letter-spacing: 0.02em;
}

@media (max-width: 991px) {
  .design-preview { padding-block: 3rem 4rem; }
  .design-preview__header { margin-bottom: 1.75rem; }
  .design-preview__title { font-size: 1.75rem; }
  .design-preview__nav { display: none; } /* native touch scroll on mobile */

  .preview-card { flex: 0 0 55%; } /* 30% smaller than 78% */
}

@media (max-width: 479px) {
  .preview-card { flex: 0 0 59%; } /* 30% smaller than 84% */
  .preview-card__media { border-radius: 14px; }
}

/* ==========================================================================
   Home - Projects section
   ========================================================================== */

.section-projects {
  padding-block: 4rem 6rem;
  padding-inline: var(--container-padding-x);
}

.section-projects__heading {
  margin: 0 auto 3rem;
  max-width: var(--max-width-page);
  font-size: 2rem;
  font-weight: var(--fw-medium);
}

.project-grid {
  display: flex;
  gap: 3rem;
  max-width: var(--max-width-page);
  margin-inline: auto;
}

.project-grid__col {
  flex: 1 1 0;
  min-width: 0; /* allow flex children to shrink below their content size */
  display: flex;
  flex-direction: column;
  gap: 4rem;
}

.project-grid__col > .project-card {
  height: auto; /* natural height based on image aspect ratio */
}

/* When the filter empties a column, hide it and keep the remaining column at
   half width so its cards naturally shift to the left edge of the grid. */
.project-grid__col.is-empty {
  display: none;
}

.project-grid:has(.project-grid__col.is-empty) .project-grid__col {
  flex: 0 0 calc((100% - 3rem) / 2);
}

@media (max-width: 991px) {
  .project-grid {
    flex-direction: column;
    gap: 2rem;
  }
  .project-grid__col {
    gap: 2rem;
  }
}

/* ==========================================================================
   Home - About me
   ========================================================================== */

.section-about {
  padding-block: 5rem;
  padding-inline: var(--container-padding-x);
}

.section-about__inner {
  max-width: 105rem;
  margin-inline: auto;
  padding: 3rem;
  background-color: var(--color-gray-soft);
  border-radius: var(--radius-lg);
}

.section-about__title {
  margin-bottom: 2rem;
  font-size: 2rem;
  font-weight: var(--fw-medium);
}

.about-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  width: 100%;
}

.about-list__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem 1.25rem;
  padding-block: 1rem;
  border-bottom: 1px solid var(--color-gray-200);
}

.about-list__item:last-child {
  border-bottom: 0;
}

.about-list__title {
  flex: 1 1 auto;
  font-size: 1.125rem;
  font-weight: var(--fw-semibold);
  font-family: var(--font-kr);
  color: var(--color-text-strong);
}

.about-list__date {
  font-size: var(--fs-medium);
  color: var(--color-text);
}

@media (max-width: 991px) {
  .section-about__inner {
    padding: 3rem 2rem;
  }
}