/* 3-Dees Visuals — Architecture / Spatial project pages
   Editorial Light · Blueprint Precision */

@import url("site-grid.css");
@import url("gallery-carousel.css");

:root {
  --arch-bg: #F4F4F2;
  --arch-bg-warm: #EAE8E3;
  --arch-ink: #1A1A1A;
  --arch-muted: #5c5c59;
  --arch-line: rgba(26, 26, 26, 0.1);
  --arch-accent: #004D40;
  --arch-blueprint: #1E3A8A;
  --arch-steel: #4A6E8D;
  --header-h: 72px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  /* Gallery carousel tokens (Spatial Studio) — same component, pillar palette */
  --carousel-line: var(--arch-line);
  --carousel-viewport-bg: #fff;
  --carousel-btn-bg: #fff;
  --carousel-btn-hover-bg: rgba(0, 77, 64, 0.08);
  --carousel-ink: var(--arch-ink);
  --carousel-muted: var(--arch-muted);
  --carousel-accent: var(--arch-accent);
  --carousel-img-bg: var(--arch-bg-warm);
  --carousel-img-border: var(--arch-line);
  --carousel-img-shadow: 0 12px 32px rgba(26, 26, 26, 0.08);
  --carousel-dot: rgba(26, 26, 26, 0.18);
  --carousel-dot-hover: rgba(0, 77, 64, 0.55);
  --carousel-dot-active-track: rgba(0, 77, 64, 0.28);
  --carousel-radius: 2px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--arch-bg);
  color: var(--arch-ink);
  font-family: Inter, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  overflow-x: hidden;
  isolation: isolate;
}

/* Spatial project pages always get the architecture blueprint grid */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(var(--arch-grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--arch-grid-major) 1px, transparent 1px),
    linear-gradient(var(--arch-grid-minor) 1px, transparent 1px),
    linear-gradient(90deg, var(--arch-grid-minor) 1px, transparent 1px);
  background-size:
    var(--arch-grid-major-size) var(--arch-grid-major-size),
    var(--arch-grid-major-size) var(--arch-grid-major-size),
    var(--arch-grid-minor-size) var(--arch-grid-minor-size),
    var(--arch-grid-minor-size) var(--arch-grid-minor-size);
}

a {
  color: inherit;
  text-decoration: none;
}

img,
video {
  max-width: 100%;
  display: block;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 100;
  padding: 8px 12px;
  background: var(--arch-ink);
  color: var(--arch-bg);
  font-size: 13px;
}

.skip-link:focus {
  top: 12px;
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

/* ——— Header ——— */
#main-header {
  position: sticky;
  top: 0;
  z-index: 60;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(244, 244, 242, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--arch-line);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "Space Grotesk", Inter, sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: -0.02em;
  flex-shrink: 0;
  white-space: nowrap;
}

.logo-image {
  height: 34px;
  width: auto;
}

.logo__slash {
  color: var(--arch-muted);
  font-weight: 500;
}

.logo__track {
  font-family: "Architects Daughter", cursive;
  color: var(--arch-muted);
  font-weight: 600;
  font-size: 0.95rem;
}

.main-nav {
  flex: 1;
  min-width: 0;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 4px 18px;
}

.main-nav a {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--arch-muted);
  padding: 6px 0;
  transition: color 0.25s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--arch-ink);
}

.main-nav a.active {
  border-bottom: 1px solid var(--arch-ink);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.track-switch {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid var(--arch-line);
  color: var(--arch-muted);
  white-space: nowrap;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.track-switch:hover {
  color: var(--arch-ink);
  border-color: var(--arch-ink);
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--arch-ink);
  background: var(--arch-ink);
  color: var(--arch-bg);
  transition: background 0.25s ease, color 0.25s ease, transform 0.25s var(--ease);
  white-space: nowrap;
  cursor: pointer;
}

.cta-button:hover {
  background: transparent;
  color: var(--arch-ink);
  transform: translateY(-1px);
}

.cta-button.ghost {
  background: transparent;
  color: var(--arch-ink);
}

.cta-button.ghost:hover {
  background: var(--arch-ink);
  color: var(--arch-bg);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--arch-line);
  width: 42px;
  height: 42px;
  font-size: 1.15rem;
  color: var(--arch-ink);
  cursor: pointer;
}

.nav-switch {
  display: none;
}

/* ——— Hero ——— */
.project-hero {
  padding: clamp(56px, 8vw, 96px) 0 clamp(40px, 5vw, 64px);
  border-bottom: 1px solid var(--arch-line);
}

.project-hero .container {
  display: grid;
  gap: 32px;
}

.eyebrow,
.section-label {
  margin: 0 0 12px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--arch-steel);
}

.project-hero h1 {
  margin: 0 0 12px;
  font-family: "Space Grotesk", Inter, sans-serif;
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.project-hero .subtitle {
  margin: 0 0 20px;
  font-family: "Architects Daughter", cursive;
  font-size: 1.25rem;
  color: var(--arch-blueprint);
}

.project-hero .lead {
  margin: 0;
  max-width: 62ch;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--arch-muted);
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0;
  border: 1px solid var(--arch-line);
  background: rgba(255, 255, 255, 0.55);
}

.meta-block {
  padding: 18px 16px;
  border-right: 1px solid var(--arch-line);
  border-bottom: 1px solid var(--arch-line);
}

.meta-block dt {
  margin: 0 0 6px;
  font-family: "Architects Daughter", cursive;
  font-size: 0.85rem;
  color: var(--arch-blueprint);
}

.meta-block dd {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ——— Sections ——— */
.project-section {
  padding: clamp(56px, 8vw, 96px) 0;
  border-bottom: 1px solid var(--arch-line);
}

.project-section h2 {
  margin: 0 0 12px;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.section-note {
  font-family: "Architects Daughter", cursive;
  color: var(--arch-blueprint);
  margin: 0 0 28px;
  font-size: 1.05rem;
}

.prose {
  max-width: 68ch;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--arch-muted);
}

.prose p {
  margin: 0 0 1.1em;
}

.prose p:last-child {
  margin-bottom: 0;
}

/* Viewport / media frame */
.viewport-frame {
  border: 1px solid var(--arch-line);
  background: var(--arch-bg-warm);
  padding: 12px;
  position: relative;
}

.viewport-frame::before {
  content: attr(data-label);
  position: absolute;
  top: -10px;
  left: 16px;
  padding: 0 8px;
  background: var(--arch-bg);
  font-family: "Architects Daughter", cursive;
  font-size: 0.85rem;
  color: var(--arch-blueprint);
}

.viewport-frame video,
.viewport-frame iframe,
.viewport-frame img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #ddd;
}

.viewport-frame iframe {
  border: 0;
  min-height: 360px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.gallery-item {
  border: 1px solid var(--arch-line);
  background: #fff;
  overflow: hidden;
}

.gallery-item img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.gallery-item figcaption {
  padding: 12px 14px;
  font-family: "Architects Daughter", cursive;
  font-size: 0.9rem;
  color: var(--arch-blueprint);
  border-top: 1px solid var(--arch-line);
}

.testimonial {
  max-width: 640px;
  margin: 32px 0 0;
  padding: 24px 28px;
  border-left: 3px solid var(--arch-blueprint);
  background: rgba(255, 255, 255, 0.65);
}

.testimonial p {
  margin: 0;
  font-style: italic;
  line-height: 1.65;
  color: var(--arch-muted);
}

.testimonial footer {
  margin-top: 12px;
  font-family: "Architects Daughter", cursive;
  color: var(--arch-blueprint);
  font-style: normal;
}

/* Pager + CTA */
.project-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: clamp(40px, 6vw, 72px) 0;
}

.pager-link {
  display: block;
  padding: 22px 20px;
  border: 1px solid var(--arch-line);
  background: rgba(255, 255, 255, 0.55);
  transition: border-color 0.25s ease, transform 0.25s var(--ease);
}

.pager-link:hover {
  border-color: var(--arch-ink);
  transform: translateY(-2px);
}

.pager-link.next {
  text-align: right;
}

.pager-link span {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--arch-muted);
  margin-bottom: 8px;
}

.pager-link strong {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
}

.cta-band {
  padding: clamp(56px, 8vw, 88px) 0;
  border-top: 1px solid var(--arch-line);
  background: var(--arch-bg-warm);
  text-align: left;
}

.cta-band h2 {
  margin: 0 0 12px;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.cta-band p {
  margin: 0 0 24px;
  max-width: 52ch;
  color: var(--arch-muted);
  line-height: 1.65;
}

#main-footer {
  border-top: 1px solid var(--arch-line);
  padding: 36px 0;
  background: var(--arch-bg);
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 24px;
  font-size: 0.8rem;
  color: var(--arch-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a:hover {
  color: var(--arch-accent);
}

@media (max-width: 900px) {
  .mobile-menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(244, 244, 242, 0.98);
    border-bottom: 1px solid var(--arch-line);
  }

  .main-nav.active {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    padding: 18px 20px;
    gap: 12px;
    justify-content: flex-start;
  }

  .header-content {
    position: relative;
  }

  .header-actions .cta-button,
  .header-actions .track-switch {
    display: none;
  }

  .nav-switch {
    display: list-item;
    margin-top: 8px;
    padding-top: 12px;
    border-top: 1px solid var(--arch-line);
  }

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

  .pager-link.next {
    text-align: left;
  }
}

@media (max-width: 560px) {
  .logo__track,
  .logo__slash {
    display: none;
  }

  .gallery-item img {
    height: 200px;
  }
}

.folder-section {
  text-align: center;
}

.folder-viewer-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
  position: relative;
}

.folder-frame {
  width: 100%;
  max-width: 950px;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 4px;
  background: #111;
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
  position: relative;
}

.folder-track {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
}

.folder-spread {
  min-width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #1a1a1a;
  flex-shrink: 0;
  gap: 0;
  margin: 0;
  padding: 0;
}

.folder-spread img,
.folder-spread .folder-page-empty {
  width: 50% !important;
  height: 100% !important;
  margin: 0 !important;
  padding: 0 !important;
  border: none !important;
}

.folder-spread img {
  object-fit: fill !important;
  background: transparent;
  display: block;
}

.folder-spread .folder-page-empty {
  background: #1a1a1a;
}

.folder-nav-btn {
  background: #fff;
  border: 1px solid var(--arch-line);
  color: var(--arch-ink);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.folder-nav-btn:hover {
  background: var(--arch-ink);
  color: var(--arch-bg);
  border-color: var(--arch-ink);
}

.folder-counter {
  margin-top: 1rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  color: #888;
}