/*
  project-detail.css
  ─────────────────────────────────────────────────────────
  Extends styles.css for individual project case study pages.
  Place this file inside your /projects/ folder.
  Link BOTH in your HTML (paths relative to /projects/):
    <link rel="stylesheet" href="../styles.css">
    <link rel="stylesheet" href="project-detail.css">
  ─────────────────────────────────────────────────────────
*/

/* ── PROJECT HERO ────────────────────────────────────── */
.proj-hero {
  position: relative;
  height: 75vh;
  min-height: 480px;
  overflow: hidden;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: flex-end;
}
.proj-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: grayscale(20%) brightness(0.55);
  transition: transform 0.8s ease;
}
.proj-hero:hover .proj-hero-bg {
  transform: scale(1.02);
}
.proj-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(17,18,16,0.92) 0%, rgba(17,18,16,0.1) 60%, transparent 100%);
}
.proj-hero-content {
  position: relative;
  z-index: 2;
  padding: 0 3.5rem 3.5rem;
  width: 100%;
}
.proj-hero-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mid);
  text-decoration: none;
  margin-bottom: 2rem;
  transition: color 0.2s;
}
.proj-hero-back:hover { color: var(--ink); }
.proj-hero-meta {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 0.8rem;
}
.proj-hero-num {
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--faint);
}
.proj-hero-category {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-bright);
}
.proj-hero h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 1.0;
  max-width: 16ch;
}
.proj-hero-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1.2rem;
}
.proj-hero-tag {
  font-size: 0.67rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.28rem 0.7rem;
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--mid);
  background: rgba(17,18,16,0.5);
}

/* ── SPECS STRIP ─────────────────────────────────────── */
.proj-specs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--rule);
  background: var(--surface);
}
.proj-spec {
  padding: 1.6rem 2rem;
  border-right: 1px solid var(--rule);
}
.proj-spec:last-child { border-right: none; }
.proj-spec-key {
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 0.35rem;
}
.proj-spec-val {
  font-size: 0.9rem;
  color: var(--ink);
  font-weight: 400;
  line-height: 1.4;
}

/* ── CASE STUDY LAYOUT ───────────────────────────────── */
.case-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 0;
  align-items: start; /* FIX: prevents sidebar from stretching to grid row height */
}

/* Outer wrapper that does the sticky behaviour */
.case-sidebar-sticky {
  position: sticky;
  top: 80px;                        /* clears the fixed nav */
  height: calc(100vh - 80px);
  overflow-y: auto;
  scrollbar-width: none;
  border-right: 1px solid var(--rule);
}
.case-sidebar-sticky::-webkit-scrollbar { display: none; }

.case-sidebar {
  padding: 3rem 2rem 3rem 3.5rem;
}

/* FIX 2: sidebar labels — use adjacent sibling / direct rule instead of :first-child */
.case-sidebar-label {
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 1rem;
  margin-top: 2.5rem;
}
/* Remove top margin only from the very first label in the sidebar */
.case-sidebar > .case-sidebar-label:first-of-type {
  margin-top: 0;
}

/* sidebar section nav */
.case-nav {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.case-nav-link {
  font-size: 0.82rem;
  color: var(--mid);
  text-decoration: none;
  padding: 0.45rem 0 0.45rem 0.9rem;
  border-left: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.case-nav-link:hover {
  color: var(--ink);
  border-color: var(--faint);
}
.case-nav-link.active {
  color: var(--ink);
  border-color: var(--accent-bright);
  background: var(--surface);
}

.case-sidebar-sticky nav.case-nav {
  display: flex !important;
  flex-direction: column !important;
  position: static !important;
  transform: none !important;
  width: 100% !important;
  height: auto !important;
  background: transparent !important;
  text-align: left !important;  /* Forces text alignment back to the left */
  align-items: stretch !important;
  margin: 0 !important;
  padding: 0 !important;
}

.case-sidebar-sticky .case-nav-link {
  display: block !important;
  position: static !important;
  float: none !important;
  width: 100% !important;
  text-align: left !important;  /* Ensures text stays left-aligned */
  
  /* Restores your original design spacing */
  font-size: 0.82rem !important;
  padding: 0.55rem 0 0.55rem 0.9rem !important; 
  margin: 0 !important;
}

/* sidebar tech list */
.case-tech-list {
  display: flex;
  flex-direction: column;
}
.case-tech-item {
  font-size: 0.78rem;
  color: var(--mid);
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.case-tech-item:first-child { border-top: 1px solid var(--rule); }
.case-tech-item::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-bright);
  flex-shrink: 0;
}

/* ── CASE STUDY CONTENT ──────────────────────────────── */
.case-content {
  padding: 4rem 3.5rem;
  min-width: 0; /* prevent grid blowout */
}

.case-section {
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--rule);
  scroll-margin-top: 100px; /* FIX: clears nav + some breathing room */
}
.case-section:first-child { padding-top: 0; }
.case-section:last-child { border-bottom: none; padding-bottom: 0; }

.case-section-label {
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 0.7rem;
}
.case-section h2 {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  line-height: 1.1;
  margin-bottom: 1.4rem;
}
.case-section p {
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--mid);
  max-width: 64ch;
  margin-bottom: 1.1rem;
}
.case-section p:last-child { margin-bottom: 0; }
.case-section p strong { color: var(--ink); font-weight: 500; }

/* FIX 3: prevent global em color from bleeding into body copy */
.case-section p em {
  color: inherit;
  font-style: italic;
}

/* ── PULL QUOTE ──────────────────────────────────────── */
.pull-quote {
  margin: 2rem 0;
  padding: 1.4rem 1.8rem;
  border-left: 2px solid var(--accent-bright);
  background: var(--surface);
}
.pull-quote p {
  font-family: 'DM Serif Display', serif;
  font-size: 1.1rem !important;
  line-height: 1.6 !important;
  color: var(--ink) !important;
  font-style: italic;
  max-width: none !important;
  margin: 0 !important;
}

/* ── IMAGE BLOCK ─────────────────────────────────────── */
.img-block { margin: 2.5rem 0; }
.img-block img {
  width: 100%;
  display: block;
  filter: grayscale(15%) brightness(0.85);
  border: 1px solid var(--rule);
  transition: filter 0.3s;
}
.img-block:hover img { filter: grayscale(0%) brightness(0.95); }
.img-caption {
  margin-top: 0.6rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--mid);
  font-style: italic;
}

/* ── Smaller IMAGE BLOCK ─────────────────────────────── */ 
.img-block2 { margin: 2.5rem 0; }
.img-block2 img {
  width: 50%;
  display: block;
  filter: grayscale(15%) brightness(0.85);
  border: 1px solid var(--rule);
  transition: filter 0.3s;
}
.img-block2:hover img { filter: grayscale(0%) brightness(0.95); }
.img-caption {
  margin-top: 0.6rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--mid);
  font-style: italic;
}

/* two-up image grid */
.img-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--rule);
  margin: 2.5rem 0;
  border: 1px solid var(--rule);
}
.img-grid-2 img {
  width: 100%;
  display: block;
  aspect-ratio: 16/10;
  object-fit: contain;
  object-position: center;
  filter: grayscale(15%) brightness(0.8);
  transition: filter 0.3s;
}
.img-grid-2 img:hover { filter: grayscale(0%) brightness(0.95); }

/* ── CALLOUT STATS ───────────────────────────────────── */
.callout {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin: 2rem 0;
}
.callout-item {
  background: var(--surface);
  padding: 1.8rem 2rem;
}
.callout-val {
  font-family: 'DM Serif Display', serif;
  font-size: 2.2rem;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 0.4rem;
}
/* Override global em color specifically here — keep it accent */
.callout-val em {
  color: var(--accent-bright) !important;
  font-style: normal;
}
.callout-label {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mid);
}

/* ── NEXT PROJECT ────────────────────────────────────── */
.proj-next {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 3rem 3.5rem;
  border-top: 1px solid var(--rule);
  background: var(--surface);
  text-decoration: none;
  transition: background 0.2s;
}
.proj-next:hover { background: var(--lift); }
.proj-next-label {
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 0.4rem;
}
.proj-next-title {
  font-family: 'DM Serif Display', serif;
  font-size: 1.5rem;
  color: var(--ink);
}
.proj-next-arrow {
  font-size: 1.8rem;
  color: var(--mid);
  transition: transform 0.2s, color 0.2s;
}
.proj-next:hover .proj-next-arrow {
  transform: translateX(6px);
  color: var(--accent-bright);
}

/* ── RESPONSIVE ──────────────────────────────────────── */
@media (max-width: 900px) {
  .proj-hero { height: 55vw; min-height: 320px; }
  .proj-hero-content { padding: 0 1.5rem 2.5rem; }
  .proj-specs { grid-template-columns: 1fr 1fr; }
  .proj-spec { border-right: none; border-bottom: 1px solid var(--rule); }
  .case-layout { grid-template-columns: 1fr; }
  .case-sidebar-sticky {
    position: static;
    height: auto;
    overflow-y: visible;
    border-right: none;
    border-bottom: 1px solid var(--rule);
  }
  .case-sidebar { padding: 2.5rem 1.5rem; }
  .case-content { padding: 3rem 1.5rem; }
  .img-grid-2 { grid-template-columns: 1fr; }
  .callout { grid-template-columns: 1fr 1fr; }
  .proj-next { padding: 2rem 1.5rem; }
}