/* Shared layout for Exact IOT project case-study pages — linked by the four
   /projects/*.html pages via <link rel="stylesheet" href="/css/projects.css">
   (after site.css). Holds breadcrumb, project hero, overview, gallery, specs,
   tech tags, project nav, buttons and CTA rules common to all project pages. */

/* ─── BREADCRUMB ─── */

.breadcrumb {
  position: relative;
  z-index: 1;
  padding: 5.5rem 2.5rem 0;
  max-width: 1200px;
  margin: 0 auto;
}

.breadcrumb-inner {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumb-inner a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.3s;
}

.breadcrumb-inner a:hover { color: var(--accent); }

.breadcrumb-inner .sep { opacity: 0.4; }

.breadcrumb-inner .current { color: var(--text-secondary); }

/* ─── PROJECT HERO ─── */

.project-hero {
  position: relative;
  z-index: 1;
  padding: 2rem 2.5rem 0;
}

.project-hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.project-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.project-num::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--accent);
}

.project-client {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  letter-spacing: 0.03em;
}

.project-client strong {
  color: var(--accent);
  font-weight: 500;
}

.project-intro {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-weight: 300;
  margin-bottom: 2rem;
  max-width: 520px;
}

.project-stat {
  padding: 1rem 0;
  border-top: 1px solid var(--border);
}

.project-stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 0.3rem;
  display: block;
}

.project-stat-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: block;
}

/* When real images replace placeholders */

.project-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: var(--bg-card);
  border-radius: 10px;
  border: 1px solid var(--border);
  transition: border-color 0.4s;
}

.project-img:hover {
  border-color: var(--accent-mid);
}

/* ─── OVERVIEW SECTION ─── */

.project-overview {
  position: relative;
  z-index: 1;
  padding: 5rem 2.5rem;
}

.overview-block {
  max-width: 1200px;
  margin: 0 auto 4rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.overview-block:last-child { margin-bottom: 0; }

.overview-block.reverse .overview-text { order: 2; }

.overview-block.reverse .overview-image { order: 1; }

.overview-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.overview-tag::before {
  content: '//';
  opacity: 0.5;
}

.overview-title {
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.overview-text p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-weight: 300;
  margin-bottom: 1rem;
}

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

.specs-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.specs-text {
  padding-top: 0.5rem;
}

/* Tech stack tags */

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2rem;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.45rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
  transition: all 0.3s;
}

.tech-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

/* ─── PROJECT NAVIGATION ─── */

.project-nav {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  background: var(--bg-surface);
}

.project-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.project-nav-link {
  display: flex;
  flex-direction: column;
  padding: 2.5rem;
  text-decoration: none;
  transition: background 0.3s;
  border-right: 1px solid var(--border);
}

.project-nav-link:last-child { border-right: none; }

.project-nav-link:hover { background: var(--bg-card); }

.project-nav-link.next { text-align: right; align-items: flex-end; }

.project-nav-dir {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.project-nav-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  transition: color 0.3s;
}

.project-nav-link:hover .project-nav-title { color: var(--accent); }

.project-nav-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  margin-top: 0.2rem;
}

/* ─── BUTTONS ─── */

.btn-primary {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.9rem 2rem;
  background: var(--accent);
  color: var(--bg-deep);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  letter-spacing: 0.04em;
  font-weight: 500;
  transition: all 0.3s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-ghost {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.9rem 2rem;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.project-cta-inner {
  max-width: 600px;
  margin: 0 auto;
}

.project-cta h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
  line-height: 1.15;
}

.project-cta p {
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 300;
  margin-bottom: 2rem;
  line-height: 1.65;
}