/* ── Sidebar navigation ── */
.overview-nav {
  position: fixed;
  left: 0;
  top: 0;
  height: 100vh;
  width: 17rem;
  z-index: 20;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: stretch;
  box-sizing: border-box;
  background: #e8e8e8;
  border-right: 1px solid #d8d8d8;
}

.filter-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: .9rem 1.25rem 1.1rem;
  border-top: 1px solid #d0d0d0;
  background: #e8e8e8;
}

.filter-bar-label {
  display: block;
  font-size: .45rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  font-family: var(--font-family-mono);
  color: #bbb;
  margin-bottom: .55rem;
}

.filter-bar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
}

.filter-bar a::after {
  content: none;
}

/* ── Scroll container ── */
.projects-scroll {
  margin: calc(var(--padding) * -1);
  margin-left: 14rem;
}

.overview-project {
  height: 200vh;
}

.overview-sticky {
  display: flex;
  height: 100vh;
  overflow: hidden;
  border-bottom: 1px solid var(--color-light);
  will-change: transform;
}

.overview-col-image {
  flex: 0 0 55%;
  position: relative;
  overflow: hidden;
  background: var(--color-light);
}

.overview-cover {
  position: absolute;
  inset: 0;
  background: var(--color-black);
}

.overview-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

video.overview-cover-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
}

.overview-cover:has(video.overview-cover-video) {
  background: var(--color-background);
}

iframe.overview-cover-video {
  position: absolute;
  top: 50%;
  left: 50%;
  width: calc(100vh * 16 / 9);
  height: 100vh;
  min-width: 100%;
  transform: translate(-50%, -50%);
  border: 0;
  pointer-events: none;
}

.overview-cover--full { background: var(--color-background); }
.overview-cover--full img {
  object-fit: contain;
}

.overview-col-info {
  flex: 0 0 45%;
  display: flex;
  align-items: center;
  padding: 4rem 3rem;
  box-sizing: border-box;
  background: var(--color-background);
}

.overview-info-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  width: 100%;
}

.overview-counter {
  font-size: .65rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--color-grey);
}

.overview-title {
  font-size: clamp(1.75rem, 3vw, 2.75rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -.02em;
  margin-top: .25rem;
}

.overview-title a {
  text-decoration: none;
  color: inherit;
}

.overview-subheading {
  margin-top: .4rem;
  font-size: .9rem;
}

.overview-text {
  font-size: .85rem;
  line-height: 1.7;
  color: #444;
}

.overview-view-link {
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-grey);
  text-decoration: none;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-light);
  transition: color .2s;
}

.overview-view-link:hover {
  color: var(--color-black);
}

.overview-links {
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.overview-external-link {
  border-top: none;
  padding-top: 0;
}

/* ── Scroll hint ── */
.scroll-hint {
  position: fixed;
  bottom: 2.5rem;
  left: calc(17rem + (100vw - 17rem) / 2);
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .9rem;
  z-index: 15;
  pointer-events: none;
  opacity: 1;
  transition: opacity .9s ease;
}
.scroll-hint.is-gone {
  opacity: 0;
}
.scroll-hint-label {
  font-size: .65rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--color-grey);
}
.scroll-hint-track {
  width: 1px;
  height: 3.5rem;
  background: var(--color-light);
  position: relative;
  overflow: hidden;
}
.scroll-hint-track::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 40%;
  background: var(--color-grey);
  animation: scroll-hint-slide 1.7s cubic-bezier(.45, 0, .55, 1) infinite;
}
@keyframes scroll-hint-slide {
  0%   { transform: translateY(-100%); opacity: 0; }
  15%  { opacity: 1; }
  85%  { opacity: 1; }
  100% { transform: translateY(300%); opacity: 0; }
}
.scroll-hint.is-shaking {
  animation: scroll-hint-shake .6s cubic-bezier(.36,.07,.19,.97);
}
@keyframes scroll-hint-shake {
  0%, 100% { transform: translateX(-50%) translateY(0);    }
  20%       { transform: translateX(-50%) translateY(7px);  }
  45%       { transform: translateX(-50%) translateY(-3px); }
  65%       { transform: translateX(-50%) translateY(5px);  }
  80%       { transform: translateX(-50%) translateY(-2px); }
}

@media screen and (max-width: 60rem) {
  html {
    scroll-snap-type: y mandatory;
    scroll-padding-top: 3.5rem;
  }

  .scroll-hint { display: none; }
  .overview-nav { display: none; }

  .projects-scroll { margin: calc(var(--padding) * -1); }

  .overview-project {
    height: calc(100vh - 3.5rem);
    height: calc(100svh - 3.5rem);
    scroll-snap-align: start;
    scroll-snap-stop: always;
    border-bottom: 1px solid var(--color-light);
  }

  .overview-sticky {
    flex-direction: column;
    height: 100%;
    overflow: hidden;
  }

  .overview-col-image {
    flex: 1 1 0;
    min-height: 0;
    height: auto;
    width: 100%;
  }

  .overview-cover { transform: none !important; }

  .overview-col-info {
    flex: none;
    border-left: none;
    border-top: 1px solid var(--color-light);
    padding: 1.25rem var(--padding);
  }

  .overview-info-inner {
    gap: .75rem;
  }

  /* hide redundant labels, keep description */
  .overview-col-info .project-label { display: none; }
  .overview-col-info .project-divider { display: none; }
  .overview-col-info .project-section-label { display: none; }
  .overview-col-info .overview-subheading { display: none; }

  .overview-view-link {
    padding-top: .75rem;
  }
}