/* === Fonts === */
@font-face {
  font-family: 'primaryFont';
  src: url('/fonts/Aeonik-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'headingFont';
  src: url('/fonts/Aeonik-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

/* === Variables === */
:root {
  --cs-bg: #000000;
  --cs-fg: #ffffff;
  --cs-muted: rgba(255, 255, 255, 0.45);
  --cs-border: rgba(255, 255, 255, 0.1);
  --cs-orange: #ff4d2e;
  --cs-font-primary: 'primaryFont', system-ui, -apple-system, sans-serif;
  --cs-font-heading: 'headingFont', system-ui, -apple-system, sans-serif;
}

/* === Resets === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { background: var(--cs-bg); font-size: 16px; scroll-behavior: auto; }
body { background: var(--cs-bg); color: var(--cs-fg); font-family: var(--cs-font-primary); overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* === Orange Transition Overlay (enters page covering it, then exits upward) === */
#cs-transition {
  position: fixed;
  inset: 0;
  background: var(--cs-orange);
  z-index: 9999;
  transform: translateY(0);
  will-change: transform;
  pointer-events: none;
}
#cs-transition.reveal {
  transition: transform 0.72s cubic-bezier(0.76, 0, 0.24, 1);
  transform: translateY(-100%);
}
#cs-transition.cover {
  transition: transform 0.55s cubic-bezier(0.76, 0, 0.24, 1);
  transform: translateY(0) !important;
  pointer-events: all;
}
#cs-transition.hidden {
  transform: translateY(-100%);
  transition: none;
}

/* === Navigation === */
.cs-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2.5rem;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--cs-border);
}
.cs-nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.cs-nav-links a {
  font-family: var(--cs-font-heading);
  font-size: 0.875rem;
  color: var(--cs-muted);
  transition: color 0.2s;
}
.cs-nav-links a:hover { color: var(--cs-fg); }
.cs-nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--cs-font-heading);
  font-size: 0.875rem;
  color: var(--cs-fg);
}
.cs-nav-logo img {
  width: 22px;
  height: auto;
  display: block;
}
.cs-nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--cs-font-heading);
  font-size: 0.8125rem;
  color: var(--cs-fg);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.5rem 1.125rem;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.cs-nav-cta:hover {
  border-color: var(--cs-fg);
  background: rgba(255, 255, 255, 0.06);
}

/* === Page Layout === */
.cs-page {
  display: grid;
  grid-template-columns: minmax(280px, 320px) minmax(0, 1fr);
  min-height: 100vh;
}

/* === Sidebar === */
.cs-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 8rem 2rem 3rem 2.5rem;
  border-right: 1px solid var(--cs-border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
}
.cs-meta {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}
.cs-meta-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.cs-meta-label {
  font-family: var(--cs-font-heading);
  font-size: 0.6875rem;
  letter-spacing: 0.07em;
  color: var(--cs-muted);
  text-transform: uppercase;
}
.cs-meta-value {
  font-family: var(--cs-font-primary);
  font-size: 0.9375rem;
  color: var(--cs-fg);
  line-height: 1.5;
}
.cs-meta-cats {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.cs-meta-cats span {
  font-family: var(--cs-font-primary);
  font-size: 0.9375rem;
  color: var(--cs-fg);
}
.cs-project-name {
  font-family: var(--cs-font-heading);
  font-size: clamp(1.75rem, 2.5vw, 2.75rem);
  color: var(--cs-fg);
  line-height: 1.05;
  letter-spacing: -0.025em;
}

/* === Content Column === */
.cs-content {
  padding: 8rem 4rem 8rem;
  max-width: 1120px;
}
.cs-hero-heading {
  font-family: var(--cs-font-heading);
  font-size: clamp(2rem, 3.5vw, 3.25rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--cs-fg);
  margin-bottom: 1.75rem;
}
.cs-description {
  font-family: var(--cs-font-primary);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 4rem;
  max-width: 580px;
}

/* === Content Sections === */
.cs-section {
  padding-top: 3rem;
  margin-bottom: 3.5rem;
  border-top: 1px solid var(--cs-border);
}
.cs-section-title {
  font-family: var(--cs-font-heading);
  font-size: 1.375rem;
  color: var(--cs-fg);
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}
.cs-section-subtitle {
  font-family: var(--cs-font-heading);
  font-size: 0.9375rem;
  color: var(--cs-fg);
  margin-bottom: 0.875rem;
}
.cs-section p {
  font-family: var(--cs-font-primary);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
}
.cs-section p + p { margin-top: 1rem; }

/* === Images === */
.cs-image-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
  margin: 3rem 0;
}
.cs-image-grid .cs-image {
  margin: 0;
}
.cs-image {
  overflow: hidden;
  background: #111;
}
.cs-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s ease;
}
.cs-image:hover img { transform: scale(1.015); }
.cs-image-caption {
  font-size: 0.75rem;
  color: var(--cs-muted);
  margin-top: 0.75rem;
  font-family: var(--cs-font-heading);
  letter-spacing: 0.03em;
}

/* === Page Footer === */
.cs-footer {
  margin-top: 6rem;
  padding-top: 3rem;
  border-top: 1px solid var(--cs-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.cs-footer-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--cs-font-heading);
  font-size: 0.875rem;
  color: var(--cs-muted);
  transition: color 0.2s;
  cursor: pointer;
}
.cs-footer-back:hover { color: var(--cs-fg); }
.cs-footer-back svg { transform: rotate(180deg); }
.cs-footer-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--cs-font-heading);
  font-size: 0.875rem;
  color: var(--cs-fg);
  border-bottom: 1px solid var(--cs-fg);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}
.cs-footer-cta:hover { color: var(--cs-orange); border-color: var(--cs-orange); }

/* === Responsive === */
@media (max-width: 900px) {
  .cs-page { grid-template-columns: 1fr; }
  .cs-sidebar {
    position: relative;
    height: auto;
    padding: 7rem 1.5rem 2rem;
    border-right: none;
    border-bottom: 1px solid var(--cs-border);
  }
  .cs-meta { flex-direction: row; flex-wrap: wrap; gap: 1.5rem; }
  .cs-project-name { font-size: 2rem; margin-top: 2rem; }
  .cs-content { padding: 2.5rem 1.5rem 5rem; max-width: 100%; }
  .cs-nav { padding: 1.25rem 1.5rem; }
  .cs-nav-links { gap: 1.25rem; }
}

/* === Home page transition overlay === */
#page-transition-overlay {
  position: fixed;
  inset: 0;
  background: var(--cs-orange, #ff4d2e);
  z-index: 9998;
  transform: translateY(100%);
  will-change: transform;
  pointer-events: none;
}
#page-transition-overlay.active {
  transition: transform 0.55s cubic-bezier(0.76, 0, 0.24, 1);
  transform: translateY(0);
  pointer-events: all;
}