/* ===================================================
   Individual Project Pages — Reference Layout (Light)
   Uses existing site fonts + palette only
   Header/footer/contact untouched
   =================================================== */

main {
  background: var(--white);
}

.project-breadcrumb,
.project-hero,
.project-detail-hero,
.project-media-ribbon,
.project-body,
.project-detail-body,
.project-nav,
.related-works {
  background: var(--white);
}

.project-breadcrumb .container,
.project-hero .container,
.project-detail-hero .container,
.project-media-ribbon .container,
.project-body .container,
.project-detail-body .container,
.project-nav .container,
.related-works .container {
  width: min(1280px, calc(100% - 2 * var(--space-8)));
}

/* ---------- Breadcrumb ---------- */
.project-breadcrumb {
  margin-top: 0;
  padding: 16px 0;
  border-top: 1px solid rgba(139, 148, 158, 0.25);
  border-bottom: 1px solid rgba(139, 148, 158, 0.25);
}

.project-breadcrumb .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}

.breadcrumb-text,
.project-breadcrumb-trail {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel-400);
  font-weight: 500;
}

.project-breadcrumb-trail a {
  color: var(--steel-400);
}

.breadcrumb-sep {
  color: var(--steel-200);
}

.breadcrumb-current {
  color: var(--black);
}

.breadcrumb-back,
.project-back-link {
  font-size: 11px;
  color: var(--steel-600);
  letter-spacing: 0.09em;
  text-transform: lowercase;
  font-weight: 600;
}

.breadcrumb-back:hover,
.project-back-link:hover {
  color: var(--black);
}

.project-back-link::after {
  content: none;
}

/* ---------- Hero ---------- */
.project-hero,
.project-detail-hero {
  padding: 0;
  border-bottom: 1px solid rgba(139, 148, 158, 0.25);
}

.project-hero-grid,
.project-detail-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 46vh;
  gap: 0;
}

.project-hero-image,
.project-detail-image {
  position: relative;
  overflow: hidden;
  border-right: 1px solid rgba(139, 148, 158, 0.25);
}

.project-hero-image::after,
.project-detail-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: none;
  pointer-events: none;
}

.project-hero-image img,
.project-detail-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  filter: none;
  transition: transform 420ms ease;
}

.project-hero-image:hover img,
.project-detail-image:hover img {
  transform: scale(1.02);
}

/* 3D Experience button overlaying hero image (IFC pages) */
.hero-3d-btn {
  position: absolute;
  bottom: 16px;
  right: 16px;
  z-index: 2;
  margin: 0;
}

.project-hero-info,
.project-detail-info {
  padding: 42px clamp(20px, 4vw, 50px) 42px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.project-hero-meta,
.project-detail-meta {
  margin: 0 0 24px;
  padding: 0;
  border-top: 0;
  display: flex;
  align-items: center;
  gap: 14px;
}

.meta-item,
.project-meta-row {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  grid-template-columns: none;
}

.meta-item:first-child::after,
.project-meta-row:first-child::after {
  content: "";
  width: 26px;
  height: 1px;
  background: rgba(242, 183, 5, 0.5);
  margin-left: 6px;
}

.meta-item dt,
.project-meta-label {
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--scaffold-green);
}

.meta-item dd,
.project-meta-value {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel-600);
  font-weight: 500;
}

.project-hero-title,
.project-detail-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(42px, 4.8vw, 77px);
  line-height: 0.94;
  letter-spacing: 0.01em;
  font-weight: 400;
  color: var(--black);
  text-transform: uppercase;
  max-width: 12ch;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

.project-hero-summary,
.project-detail-summary {
  margin: 0 0 16px;
  max-width: 47ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel-600);
}

.project-3d-open-btn {
  margin-top: 4px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--white);
  background: var(--white);
  color: var(--black);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 800;
  cursor: pointer;
  width: fit-content;
  text-decoration: none;
  transition: all 300ms cubic-bezier(0.23, 1, 0.32, 1);
}

.project-3d-open-btn:hover {
  background: var(--scaffold-green);
  border-color: var(--scaffold-green);
  color: var(--white);
}

/* ---------- Media Ribbon ---------- */
.project-media-ribbon {
  border-bottom: 1px solid rgba(139, 148, 158, 0.24);
}

.project-media-ribbon .container {
  width: 100%;
  max-width: none;
  padding: 0;
}

.project-media-ribbon-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px clamp(16px, 4vw, 48px) 18px;
  border-bottom: 1px solid rgba(139, 148, 158, 0.24);
}

.project-media-ribbon-title {
  margin: 0;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--steel-500, #5d6670);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 12px;
}

.project-media-ribbon-title::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--scaffold-green);
}

.project-media-controls {
  display: inline-flex;
  gap: 8px;
}

.project-media-btn {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border: 1px solid rgba(139, 148, 158, 0.3);
  background: var(--white);
  color: var(--steel-600);
  cursor: pointer;
}

.project-media-btn:hover {
  border-color: var(--scaffold-green);
  color: var(--scaffold-green);
}

.project-media-carousel {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 25%;
  gap: 0;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}

.project-media-carousel::-webkit-scrollbar {
  display: none;
}

.project-media-card {
  margin: 0;
  border-right: 1px solid rgba(139, 148, 158, 0.22);
  position: relative;
  overflow: hidden;
  scroll-snap-align: start;
  background: var(--white);
}

.project-media-card:last-child {
  border-right: 0;
}

.project-media-card img,
.project-media-card video {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  filter: none;
  transition: transform 340ms ease, filter 340ms ease;
}

.project-media-card:hover img,
.project-media-card:hover video {
  transform: scale(1.04);
  filter: none;
}

.project-media-card figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0;
  padding: 24px 14px 12px;
  background: linear-gradient(transparent, rgba(15, 15, 16, 0.55));
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.82);
  opacity: 0;
  transition: opacity 260ms ease;
}

.project-media-card:hover figcaption {
  opacity: 1;
}

.project-media-expand {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 30px;
  height: 30px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: rgba(15, 15, 16, 0.45);
  color: var(--white);
  border-radius: 0;
  display: inline-grid;
  place-items: center;
  cursor: pointer;
  opacity: 0;
  transition: all 220ms ease;
  z-index: 2;
}

.project-media-card:hover .project-media-expand,
.project-media-card:focus-within .project-media-expand {
  opacity: 1;
}

.project-media-expand:hover {
  border-color: var(--scaffold-green);
  color: var(--scaffold-green);
}

.project-media-expand svg {
  width: 14px;
  height: 14px;
}

.project-media-card video {
  pointer-events: none;
}

/* ---------- Media Lightbox ---------- */
.project-media-lightbox {
  position: fixed;
  inset: 0;
  z-index: 145;
}

.project-media-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 15, 16, 0.8);
  backdrop-filter: blur(6px);
}

.project-media-lightbox-panel {
  position: relative;
  z-index: 1;
  width: min(1220px, calc(min(100% - 24px, 1500px)));
  max-height: calc(100vh - 24px);
  margin: 12px auto;
  background: var(--white);
  border: 1px solid rgba(139, 148, 158, 0.35);
  overflow: hidden;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.project-media-lightbox-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(139, 148, 158, 0.22);
}

.project-media-lightbox-counter {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel-600);
  font-weight: 700;
}

.project-media-lightbox-close {
  width: 34px;
  height: 34px;
  border-radius: 0;
  border: 1px solid rgba(139, 148, 158, 0.35);
  background: var(--white);
  color: var(--black);
  font-size: 18px;
  cursor: pointer;
}

.project-media-lightbox-close:hover {
  border-color: var(--scaffold-green);
  color: var(--scaffold-green);
}

.project-media-lightbox-stage {
  background: #f3f5f8;
  min-height: 62vh;
  display: grid;
  place-items: center;
  padding: 10px;
}

.project-media-lightbox-stage img,
.project-media-lightbox-stage video {
  width: 100%;
  max-height: min(72vh, 820px);
  object-fit: contain;
  background: #e8edf2;
}

.project-media-lightbox-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-top: 1px solid rgba(139, 148, 158, 0.22);
}

.project-media-lightbox-caption {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel-600);
  font-weight: 700;
}

.project-media-lightbox-nav {
  display: inline-flex;
  gap: 8px;
}

.project-media-lightbox-btn {
  width: 32px;
  height: 32px;
  border-radius: 0;
  border: 1px solid rgba(139, 148, 158, 0.35);
  background: var(--white);
  color: var(--black);
  cursor: pointer;
}

.project-media-lightbox-btn:hover {
  border-color: var(--scaffold-green);
  color: var(--scaffold-green);
}

/* ---------- Body + Sidebar ---------- */
.project-body,
.project-detail-body {
  padding: 0;
  border-bottom: 1px solid rgba(139, 148, 158, 0.24);
}

.project-body-shell {
  display: grid;
  grid-template-columns: 1fr 320px;
  align-items: start;
}

.project-narrative {
  padding: 62px clamp(16px, 4vw, 56px);
}

.project-narrative p,
.project-narrative li {
  font-size: 14px;
  line-height: 1.82;
  color: var(--steel-600);
}

.project-narrative > p:first-child {
  font-size: 16px;
  line-height: 1.78;
  color: var(--steel-600);
  margin-bottom: 44px;
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(139, 148, 158, 0.24);
}

.project-narrative h2 {
  margin: 42px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(40px, 4.6vw, 66px);
  line-height: 0.94;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  font-weight: 400;
  color: var(--black);
}

.project-narrative strong {
  color: var(--black);
}

.project-sidebar {
  padding: 62px 26px;
  border-left: 1px solid rgba(139, 148, 158, 0.24);
  background: #f8f9fb;
}

.project-sidebar-widget + .project-sidebar-widget {
  margin-top: 34px;
}

.project-sidebar-title {
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel-400);
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(139, 148, 158, 0.24);
  font-weight: 500;
}

.project-spec-list {
  display: grid;
  gap: 10px;
}

.project-spec-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 12px;
}

.project-spec-key {
  color: var(--steel-400);
  letter-spacing: 0.06em;
}

.project-spec-val {
  color: var(--black);
  font-weight: 700;
  text-align: right;
}

.project-outcome-box {
  border: 1px solid rgba(139, 148, 158, 0.2);
  background: #ffffff;
  padding: 14px;
}

.project-outcome-box + .project-outcome-box {
  margin-top: 10px;
}

.project-outcome-num {
  font-family: var(--font-display);
  font-size: 32px;
  line-height: 1;
  color: var(--scaffold-green);
}

.project-outcome-label {
  margin-top: 3px;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel-500, #5d6670);
}

.project-sidebar-copy {
  margin: 0;
  font-size: 12px;
  color: var(--steel-600);
  line-height: 1.65;
}

.project-sidebar-cta {
  margin-top: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--scaffold-green);
  background: #fff;
  color: var(--black);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 800;
  transition: background 0.2s, color 0.2s;
}

.project-sidebar-cta:hover {
  background: var(--scaffold-green);
  color: #fff;
}

/* ---------- Prev / Next ---------- */
.project-nav {
  padding: 26px 0;
  border-bottom: 1px solid rgba(139, 148, 158, 0.24);
}

.project-nav-grid,
.project-nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.project-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--steel-500, #5d6670);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
}

.project-nav-link:hover {
  color: var(--scaffold-green);
}

.project-nav-title {
  display: none;
}

.project-nav-link svg {
  width: 14px;
  height: 14px;
}

/* ---------- Related ---------- */
.related-works {
  padding: 10px 0 64px;
  border-top: 1px solid rgba(139, 148, 158, 0.18);
}

.related-works-title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: clamp(30px, 3.2vw, 44px);
  line-height: 1.05;
  color: var(--black);
  text-transform: none;
}

.related-works-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  background: transparent;
}

.related-card {
  background: transparent;
  color: inherit;
  display: block;
}

.related-card-thumb,
.related-card-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--steel-200);
  margin-bottom: 8px;
}

.related-card-thumb img,
.related-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: none;
  transition: transform 340ms ease, filter 340ms ease;
}

.related-card:hover .related-card-thumb img,
.related-card:hover .related-card-image img {
  transform: scale(1.02);
  filter: none;
}

.related-card-meta {
  padding: 0;
  border-top: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.related-card:hover .related-card-meta {
  border-top-color: transparent;
}

.related-card-category,
.related-card-tag {
  display: inline-flex;
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--scaffold-green);
  font-weight: 700;
}

.related-card-title {
  margin: 0 0 4px;
  font-size: 11px;
  line-height: 1.35;
  color: var(--black);
  font-weight: 700;
}

.related-card-date {
  margin-left: auto;
  font-size: 10px;
  color: var(--steel-400);
}

/* ---------- Inline 3D Viewer Section ---------- */
.project-ifc-section {
  padding: 0;
  background: transparent;
  border: 0;
}

.project-ifc-section .container {
  width: 100%;
  max-width: none;
  margin: 0;
}

.project-ifc-header {
  text-align: center;
  margin-bottom: clamp(24px, 3vw, 40px);
}

.project-ifc-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 400;
  color: var(--white);
  margin: 0 0 8px;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

.project-ifc-subtitle {
  font-family: var(--font);
  font-size: clamp(14px, 1.4vw, 16px);
  color: var(--steel-400);
  margin: 0;
}

/* Window chrome wrapper */
.project-ifc-window {
  border: 1px solid rgba(139, 148, 158, 0.18);
  border-radius: 16px;
  overflow: hidden;
  background: var(--steel-900);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.25),
    0 4px 16px rgba(0, 0, 0, 0.15);
}

.project-ifc-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--black);
  border-bottom: 1px solid rgba(139, 148, 158, 0.12);
}

.project-ifc-dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--steel-600);
}

.project-ifc-dot:first-child { background: rgba(244, 63, 94, 0.65); }
.project-ifc-dot:nth-child(2) { background: rgba(242, 183, 5, 0.65); }
.project-ifc-dot:nth-child(3) { background: rgba(47, 168, 79, 0.65); }

.project-ifc-toolbar-title {
  margin-left: auto;
  font-size: 12px;
  color: var(--steel-400);
  letter-spacing: 0.01em;
  font-family: var(--font);
}

/* Viewer viewport inside window chrome */
.project-ifc-viewer {
  position: relative;
  width: 100%;
  height: auto;
  min-height: clamp(300px, 28vw, 420px);
  aspect-ratio: 16 / 10;
  background: var(--steel-900);
  overflow: hidden;
}

.project-ifc-viewer canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.project-ifc-viewer .project-3d-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--steel-400);
  background: var(--steel-900);
  z-index: 1;
  pointer-events: none;
}

.project-ifc-viewer .placeholder-icon {
  opacity: 0.4;
}

.project-ifc-viewer .placeholder-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--white);
  margin: 0;
}

.project-ifc-viewer .placeholder-desc {
  font-family: var(--font);
  font-size: 14px;
  color: var(--steel-400);
  margin: 0;
}

.project-ifc-viewer .viewer-controls {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 10;
}

.project-ifc-expand {
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: rgba(15, 15, 16, 0.45);
  color: var(--white);
  border-radius: 0;
  display: inline-grid;
  place-items: center;
  cursor: pointer;
  z-index: 10;
  transition: border-color 220ms ease, color 220ms ease, background 220ms ease;
}

.project-ifc-expand:hover {
  border-color: var(--scaffold-green);
  color: var(--scaffold-green);
  background: rgba(15, 15, 16, 0.72);
}

.project-ifc-expand svg {
  width: 15px;
  height: 15px;
}

.project-ifc-modal {
  position: fixed;
  inset: 0;
  z-index: 150;
}

.project-ifc-modal-backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  background: rgba(15, 15, 16, 0.82);
  backdrop-filter: blur(6px);
  cursor: pointer;
}

.project-ifc-modal-panel {
  position: relative;
  z-index: 1;
  width: min(1480px, calc(100% - 24px));
  margin: 12px auto;
  max-height: calc(100vh - 24px);
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 10px;
}

.project-ifc-modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.project-ifc-modal-title {
  margin: 0;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
  font-weight: 700;
}

.project-ifc-modal-close {
  width: 34px;
  height: 34px;
  border-radius: 0;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(15, 15, 16, 0.72);
  color: var(--white);
  font-size: 18px;
  cursor: pointer;
}

.project-ifc-modal-close:hover {
  border-color: var(--scaffold-green);
  color: var(--scaffold-green);
}

.project-ifc-window--modal {
  border-radius: 0;
  height: calc(100vh - 80px);
  max-height: calc(100vh - 80px);
}

.project-ifc-viewer--modal {
  min-height: 0;
  height: calc(100vh - 128px);
  aspect-ratio: auto;
}

/* ---------- 3D Modal ---------- */
.project-3d-modal {
  position: fixed;
  inset: 0;
  z-index: 140;
}

.project-3d-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 15, 16, 0.72);
  backdrop-filter: blur(5px);
}

.project-3d-modal-panel {
  position: relative;
  z-index: 1;
  width: min(1220px, calc(100% - 28px));
  margin: 14px auto;
  max-height: calc(100vh - 28px);
  overflow: auto;
  background: #F5F5F5;
  border: 1px solid #E0E0E0;
  padding: 14px;
}

.project-3d-modal-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.project-3d-modal-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 34px);
  color: var(--black);
}

.project-3d-modal-close {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid #E0E0E0;
  background: var(--white);
  color: var(--steel-600);
  cursor: pointer;
  font-size: 18px;
}

.project-3d-screen {
  height: clamp(240px, 36vw, 420px);
  border: 1px solid #E0E0E0;
  margin-bottom: 12px;
  background: var(--white);
}

.project-3d-screen canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* 3D viewer control buttons container — transparent layout wrapper only */
.viewer-controls {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 10;
  display: flex;
  gap: 6px;
  background: none;
  border: none;
  padding: 0;
}

/* ── Light-mode button defaults ── */
.viewer-control-btn {
  display: inline-flex;
  align-items: center;
  padding: 7px 13px;
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 0;
  background: rgba(255, 255, 255, 0.82);
  color: #333;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s, box-shadow 0.2s;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}
.viewer-control-btn:hover {
  background: rgba(255, 255, 255, 0.96);
  border-color: rgba(0, 0, 0, 0.25);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}
.viewer-control-btn.active {
  background: var(--scaffold-green);
  border-color: var(--scaffold-green);
  color: #fff;
}
.viewer-control-btn.active:hover {
  background: var(--scaffold-green-hover);
  border-color: var(--scaffold-green-hover);
  color: #fff;
}

/* ── Dark-mode button overrides ── */
.viewer-dark .viewer-control-btn {
  background: rgba(0, 0, 0, 0.45);
  border-color: rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.88);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}
.viewer-dark .viewer-control-btn:hover {
  background: rgba(0, 0, 0, 0.6);
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
}
.viewer-dark .viewer-control-btn.active {
  background: var(--scaffold-green);
  border-color: var(--scaffold-green);
  color: #fff;
}
.viewer-dark .viewer-control-btn.active:hover {
  background: var(--scaffold-green-hover);
  border-color: var(--scaffold-green-hover);
  color: #fff;
}

.project-exp-carousel {
  padding: 6px 2px 4px;
}

.project-exp-carousel .portfolio-carousel-track {
  gap: 16px;
}

.project-exp-carousel .portfolio-card-modern {
  min-width: 292px;
}

.project-exp-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 10px;
}

.project-exp-dots {
  display: flex;
  gap: 8px;
}

.project-exp-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  border: 0;
  background: rgba(139, 148, 158, 0.5);
  cursor: pointer;
}

.project-exp-dot.active {
  background: var(--scaffold-green);
}

.project-exp-arrows {
  display: inline-flex;
  gap: 8px;
}

.project-exp-arrow {
  width: 32px;
  height: 32px;
  border-radius: 0;
  border: 1px solid rgba(139, 148, 158, 0.45);
  background: rgba(15, 15, 16, 0.55);
  color: var(--white);
  cursor: pointer;
}

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .project-hero-grid,
  .project-detail-hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .project-hero-image,
  .project-detail-image {
    border-right: 0;
    border-bottom: 1px solid rgba(139, 148, 158, 0.24);
    min-height: 280px;
  }

  .project-hero-image img,
  .project-detail-image img {
    height: 100%;
  }

  .project-body-shell {
    grid-template-columns: 1fr;
  }

  .project-sidebar {
    border-left: 0;
    border-top: 1px solid rgba(139, 148, 158, 0.24);
    padding: 34px clamp(16px, 4vw, 56px);
  }

  .project-media-carousel {
    grid-auto-columns: 50%;
  }
}

@media (max-width: 760px) {
  .project-breadcrumb .container {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .project-hero-info,
  .project-detail-info,
  .project-narrative {
    padding: 30px 14px;
  }

  .project-media-ribbon-head {
    padding: 14px;
  }

  .project-media-carousel {
    grid-auto-columns: 82%;
  }

  .project-media-lightbox-panel {
    width: calc(100% - 12px);
    max-height: calc(100vh - 12px);
    margin: 6px auto;
  }

  .project-media-lightbox-stage {
    min-height: 48vh;
  }

  .project-nav-grid,
  .project-nav-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .project-media-ribbon-head,
  .project-ifc-modal-head {
    justify-content: center;
    text-align: center;
  }

  .project-ifc-section .container {
    display: flex;
    justify-content: center;
    overflow-x: clip;
  }

  .project-ifc-window {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    border-radius: 0;
  }

  .project-ifc-toolbar {
    justify-content: center;
    flex-wrap: wrap;
  }

  .project-ifc-toolbar-title {
    width: 100%;
    margin-left: 0;
    text-align: center;
  }

  .project-ifc-viewer .viewer-controls {
    top: 12px;
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    width: calc(100% - 24px);
  }

  .project-ifc-expand {
    right: 12px;
    left: auto;
    transform: none;
  }

  .related-works-grid {
    grid-template-columns: 1fr;
  }

  .project-3d-modal-panel {
    width: calc(100% - 16px);
    margin: 8px auto;
    max-height: calc(100vh - 16px);
    padding: 10px;
  }

  .project-ifc-modal-panel {
    width: calc(100% - 12px);
    margin: 6px auto;
    max-height: calc(100vh - 12px);
  }

  .project-ifc-window--modal {
    height: calc(100vh - 72px);
    max-height: calc(100vh - 72px);
  }

  .project-ifc-viewer--modal {
    height: calc(100vh - 120px);
  }

  .project-exp-carousel .portfolio-card-modern {
    min-width: 248px;
  }

  .project-ifc-viewer {
    height: clamp(280px, 60vw, 400px);
  }
}

/* ══════ GSAP Enhancement Layer ══════ */

/* Sidebar glassmorphism */
.project-sidebar {
  background: rgba(248, 249, 251, 0.75);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-left: 1px solid rgba(255, 255, 255, 0.3);
}

/* Modal entrance will-change hints */
.project-expanded-container,
.project-expanded-backdrop {
  will-change: transform, opacity;
}

/* Viewer controls — no container background, just layout */
.viewer-controls {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  background: none;
  border-radius: 0;
  padding: 0;
}

/* Soft depth for hero image */
.project-hero-image img,
.project-detail-image img {
  will-change: transform;
}

@media (prefers-reduced-motion: reduce) {
  .project-sidebar {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: #f8f9fb;
  }
  .viewer-controls {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: none;
  }
  .project-expanded-container,
  .project-expanded-backdrop,
  .project-hero-image img,
  .project-detail-image img {
    will-change: auto;
  }
}