/* Case Study Stylesheet for tegegn.com.et */
body {
  font-family: 'Space Grotesk', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--page-bg);
  color: var(--text-body);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Header & Nav */
.cs-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--page-bg);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
  padding: 1rem 1.5rem;
}

.cs-nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cs-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 700;
  font-size: 1.1rem;
}

.cs-brand img {
  width: 32px;
  height: 32px;
}

.cs-nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.cs-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  text-decoration: none;
  color: var(--text-dark);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--panel-bg);
  transition: all 0.2s ease;
}

.cs-back-link:hover {
  background: var(--primary-color);
  color: #fff;
  border-color: var(--primary-color);
}

.cs-theme-toggle {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  color: var(--text-dark);
  border-radius: 8px;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.cs-theme-toggle:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* Breadcrumbs */
.cs-breadcrumbs {
  max-width: 1100px;
  margin: 1.5rem auto 0;
  padding: 0 1.5rem;
  font-size: 0.875rem;
  color: var(--text-body);
}

.cs-breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  gap: 0.5rem;
}

.cs-breadcrumbs li+li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--border-color);
}

.cs-breadcrumbs a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

.cs-breadcrumbs a:hover {
  text-decoration: underline;
}

/* Main Container */
.cs-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* Hero Section */
.cs-hero {
  margin-bottom: 2.5rem;
}

.cs-kicker {
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.cs-title {
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.25;
  margin-bottom: 1rem;
}

.cs-lead {
  font-size: 1.15rem;
  color: var(--text-body);
  max-width: 850px;
  margin-bottom: 1.75rem;
}

/* Specs Bar */
.cs-specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  margin-bottom: 2.5rem;
}

.cs-spec-item strong {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.75px;
  color: var(--primary-color);
  margin-bottom: 0.25rem;
}

.cs-spec-item span {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-dark);
}

.cs-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.cs-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.cs-btn-primary {
  background: var(--primary-color);
  color: #fff;
  border: 1px solid var(--primary-color);
}

.cs-btn-primary:hover {
  background: var(--primary-soft);
  color: #fff;
}

.cs-btn-secondary {
  background: var(--panel-bg);
  color: var(--text-dark);
  border: 1px solid var(--border-color);
}

.cs-btn-secondary:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* Featured Image */
.cs-featured-media {
  margin: 2.5rem 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: var(--card-bg);
}

.cs-featured-media img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.cs-media-caption {
  font-size: 0.85rem;
  padding: 0.75rem 1rem;
  text-align: center;
  color: var(--text-body);
  background: var(--panel-bg);
  border-top: 1px solid var(--border-color);
}

/* Content Sections */
.cs-section {
  margin-bottom: 3rem;
}

.cs-section h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
}

.cs-section h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-dark);
  margin: 1.5rem 0 0.75rem;
}

.cs-section p {
  margin-bottom: 1.25rem;
}

.cs-section ul, .cs-section ol {
  margin: 0 0 1.5rem 1.5rem;
}

.cs-section li {
  margin-bottom: 0.5rem;
}

/* Architecture & Callout Boxes */
.cs-callout {
  background: var(--panel-bg);
  border-left: 4px solid var(--primary-color);
  border-radius: 0 10px 10px 0;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}

.cs-callout h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

/* Stat Cards Grid */
.cs-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.cs-stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  text-align: center;
}

.cs-stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-color);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.cs-stat-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dark);
}

/* Code Blocks */
.cs-code-block {
  background: #191512;
  color: #e5dcd3;
  border-radius: 10px;
  padding: 1.25rem;
  overflow-x: auto;
  font-family: 'JetBrains Mono', 'Fira Code', Consolas, Monaco, monospace;
  font-size: 0.9rem;
  margin: 1.5rem 0;
  border: 1px solid #382d25;
}

.cs-code-block code {
  color: inherit;
  font-family: inherit;
}

/* Tech Pills */
.cs-tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.cs-tech-tag {
  background: var(--tag-bg);
  border: 1px solid var(--border-color);
  color: var(--text-dark);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* Footer Navigation */
.cs-footer-nav {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.cs-footer-nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
}

.cs-footer-nav a:hover {
  text-decoration: underline;
}

@media (max-width: 768px) {
  .cs-container {
    padding: 1.5rem 1rem 3rem;
  }
  .cs-specs-grid {
    grid-template-columns: 1fr;
  }
  .cs-footer-nav {
    flex-direction: column;
    align-items: flex-start;
  }
}