/* Variables */
:root {
  --color-bg: #0f0f0f;
  --color-surface: #1a1a1a;
  --color-border: #2a2a2a;
  --color-text: #e8e8e8;
  --color-text-muted: #888;
  --color-accent: #3b82f6;
  --color-accent-hover: #2563eb;
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-serif: 'DM Serif Display', Georgia, serif;
  --max-width: 720px;
  --max-width-wide: 960px;
  --space: 1.25rem;
}

.container-wide {
  max-width: var(--max-width-wide);
}

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

html {
  font-size: 18px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space);
}

/* Header */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space) 0;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--color-text);
  text-decoration: none;
}

.logo:hover {
  color: var(--color-accent);
}

.nav {
  display: flex;
  gap: 1.5rem;
}

.nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
}

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

/* Hero */
.hero {
  padding: 3rem 0;
  text-align: center;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 400;
  margin: 0 0 0.5rem;
}

.tagline {
  color: var(--color-text-muted);
  font-size: 1rem;
  margin: 0 0 1.5rem;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.25rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

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

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

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

.btn-download {
  background: var(--color-accent);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.9rem;
  text-decoration: none;
  display: inline-block;
  margin: 0.5rem 0;
}

.btn-download:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.category-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.category-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s;
}

.category-card:hover {
  border-color: var(--color-accent);
}

.category-icon {
  font-size: 1.75rem;
  display: block;
  margin-bottom: 0.5rem;
}

.category-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.35rem;
}

.category-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.card-label {
  display: inline-block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: 0.35rem;
}

.article-preview {
  border-bottom: 1px solid var(--color-border);
  padding: 1.25rem 0;
}

.article-preview:first-child {
  padding-top: 0;
}

.article-preview a {
  color: inherit;
  text-decoration: none;
}

.article-preview a:hover h2 {
  color: var(--color-accent);
}

.article-preview h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.25rem;
}

.article-preview p {
  margin: 0 0 0.5rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.download-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.download-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
}

.download-info h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.25rem;
}

.download-info p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.feature-list {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--color-text-muted);
}

.feature-list li {
  margin-bottom: 0.75rem;
}

.content-alt .card-grid {
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.prose-wide {
  max-width: 52rem;
}

/* Content */
.content {
  padding: 2rem 0;
}

.content h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 1rem;
}

.content p {
  margin: 0 0 1rem;
  color: var(--color-text-muted);
}

/* Ad slots */
.ad-slot {
  margin: 2rem 0;
}

.ad-placeholder {
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Cards */
.card-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s;
}

.card:hover {
  border-color: var(--color-accent);
}

.card a {
  display: block;
  padding: 1.5rem;
  color: inherit;
  text-decoration: none;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.card p {
  margin: 0 0 0.75rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.read-more {
  color: var(--color-accent);
  font-weight: 500;
  font-size: 0.9rem;
}

/* FAQ section */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.faq-item h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.faq-item p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.faq-item a {
  color: var(--color-accent);
  text-decoration: none;
}

.faq-item a:hover {
  text-decoration: underline;
}

/* Related articles */
.related-articles {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.related-articles h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 1rem;
}

.related-articles ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.related-articles li {
  margin-bottom: 0.75rem;
}

.related-articles a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.related-articles a:hover {
  color: var(--color-accent);
}

/* Snippet / key takeaway */
.prose .key-answer {
  background: var(--color-surface);
  border-left: 3px solid var(--color-accent);
  padding: 1rem 1.25rem;
  margin: 0 0 1.5rem;
  border-radius: 0 8px 8px 0;
  font-size: 0.98rem;
}

/* Page content (about, blog list) */
.page-content {
  flex: 1;
  padding: 2rem 0;
}

.page-content h1 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 400;
  margin: 0 0 0.5rem;
}

.lead {
  color: var(--color-text-muted);
  margin: 0 0 2rem;
}

/* Article list */
.article-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.article-list li {
  border-bottom: 1px solid var(--color-border);
}

.article-list a {
  display: block;
  padding: 1.25rem 0;
  color: inherit;
  text-decoration: none;
}

.article-list a:hover h2 {
  color: var(--color-accent);
}

.article-list h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.25rem;
}

.article-list p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Breadcrumb */
.breadcrumb-wrap {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 0.6rem 0;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--color-text-muted);
}

.breadcrumb li:not(:last-child)::after {
  content: " ›";
  color: var(--color-text-muted);
  opacity: 0.8;
}

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

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

.breadcrumb li:last-child {
  color: var(--color-text);
}

/* Article page */
.article-content {
  flex: 1;
  padding: 2rem 0;
}

.article-content .article-header {
  margin-bottom: 1.5rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

.back-link:hover {
  color: var(--color-accent);
}

.article-content header h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 400;
  margin: 0 0 0.25rem;
}

.meta {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0 0 1.5rem;
}

.prose {
  max-width: 65ch;
}

.prose h2 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 2rem 0 0.5rem;
}

.prose p {
  margin: 0 0 1rem;
  color: var(--color-text-muted);
}

/* Footer */
.site-footer {
  margin-top: auto;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space) 0;
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.site-footer p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.site-footer nav {
  display: flex;
  gap: 1rem;
}

.site-footer a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

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

@media (max-width: 768px) {
  .nav {
    gap: 0.75rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .nav {
    gap: 0.5rem;
    font-size: 0.85rem;
  }
  .hero {
    padding: 2rem 0;
  }
}