/* Atplay AI — Medium-style design */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --accent: #E94560;
  --text-primary: #1a1a1a;
  --text-secondary: #6b6b6b;
  --text-body: #292929;
  --border: #e8e8e8;
  --bg: #ffffff;
  --bg-subtle: #f9f9f9;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: Georgia, 'Times New Roman', serif;
}

html { font-size: 16px; }
body { font-family: var(--font-sans); background: var(--bg); color: var(--text-primary); line-height: 1.6; }

/* ─── HEADER ─── */
header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo img { height: 38px; width: auto; object-fit: contain; }
.logo-text { font-size: 1.2rem; font-weight: 700; color: var(--text-primary); letter-spacing: -0.3px; }

nav { display: flex; align-items: center; gap: 8px; }
nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 20px;
  transition: all 0.15s;
}
nav a:hover { color: var(--text-primary); background: var(--bg-subtle); }
nav a.cta {
  background: var(--accent);
  color: #fff;
  padding: 7px 18px;
}
nav a.cta:hover { background: #c73550; }

/* ─── HERO (homepage) ─── */
.hero {
  text-align: center;
  padding: 80px 24px 64px;
  max-width: 720px;
  margin: 0 auto;
}
.hero-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 20px;
}
.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 20px;
}
.hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto;
}

/* ─── DIVIDER ─── */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* ─── ARTICLES GRID ─── */
.articles-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 24px;
}
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 40px;
}
.section-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
}
.section-link {
  font-size: 0.875rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}
.section-link:hover { text-decoration: underline; }

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
.article-card {
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
  padding-right: 32px;
}
.article-card:nth-child(3n) { padding-right: 0; }

.card-category {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 10px;
  display: block;
}
.article-card h2 {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.article-card h2 a {
  text-decoration: none;
  color: inherit;
}
.article-card h2 a:hover { color: var(--accent); }
.card-excerpt {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-meta {
  font-size: 0.8rem;
  color: #999;
}
.card-meta span { margin-right: 12px; }

/* ─── FEATURED ARTICLE ─── */
.featured-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 48px;
  margin-bottom: 0;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
}
.featured-article .card-category { font-size: 0.8rem; }
.featured-article h2 { font-size: 1.6rem; font-weight: 700; line-height: 1.3; margin-bottom: 14px; }
.featured-article h2 a { text-decoration: none; color: var(--text-primary); }
.featured-article h2 a:hover { color: var(--accent); }
.featured-article .card-excerpt { font-size: 1rem; -webkit-line-clamp: 4; margin-bottom: 16px; }

/* ─── ARTICLE PAGE ─── */
.article-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 56px 24px 80px;
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  margin-bottom: 40px;
  transition: color 0.15s;
}
.back-link:hover { color: var(--accent); }

.article-header { margin-bottom: 40px; }
.article-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 16px;
}
.article-header h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 24px;
}
.article-header .subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 28px;
  font-family: var(--font-serif);
}
.article-byline {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}
.byline-avatar {
  width: 40px;
  height: 40px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 0.9rem;
  flex-shrink: 0;
}
.byline-info { flex: 1; }
.byline-name { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); }
.byline-date { font-size: 0.8rem; color: var(--text-secondary); margin-top: 2px; }
.byline-read-time { font-size: 0.8rem; color: var(--text-secondary); }

/* ─── ARTICLE BODY ─── */
.article-body {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.85;
  color: var(--text-body);
}
.article-body p { margin-bottom: 28px; }
.article-body h2 {
  font-family: var(--font-sans);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 56px 0 20px;
  line-height: 1.3;
}
.article-body h3 {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 36px 0 16px;
}
.article-body ul, .article-body ol {
  margin: 0 0 28px 24px;
}
.article-body li { margin-bottom: 10px; line-height: 1.7; }
.article-body strong { font-weight: 700; color: var(--text-primary); }
.article-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: #c73550; }

.callout {
  background: #fff8f9;
  border-left: 3px solid var(--accent);
  padding: 20px 24px;
  margin: 40px 0;
  border-radius: 0 6px 6px 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text-body);
  line-height: 1.7;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 40px 0;
  font-family: var(--font-sans);
}
.stat-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  text-align: center;
}
.stat-box .stat-num {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  display: block;
}
.stat-box .stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ─── FAQ ─── */
.faq { margin: 48px 0; font-family: var(--font-sans); }
.faq h2 { font-size: 1.4rem; font-weight: 700; margin-bottom: 24px; }
.faq-item { border-bottom: 1px solid var(--border); padding: 20px 0; }
.faq-item h3 { font-size: 1rem; font-weight: 600; color: var(--text-primary); margin-bottom: 10px; }
.faq-item p { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.65; }

/* ─── CTA BLOCK ─── */
.article-cta {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  text-align: center;
  margin: 56px 0;
  font-family: var(--font-sans);
}
.article-cta h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; }
.article-cta p { font-size: 0.95rem; color: var(--text-secondary); margin-bottom: 20px; }
.article-cta a {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 12px 28px;
  border-radius: 24px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.15s;
}
.article-cta a:hover { background: #c73550; }

/* ─── FOOTER ─── */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  background: var(--bg);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-logo { display: flex; align-items: center; gap: 8px; }
.footer-logo img { height: 28px; width: auto; }
.footer-copy { font-size: 0.85rem; color: var(--text-secondary); }
.footer-links { display: flex; gap: 20px; }
.footer-links a { font-size: 0.85rem; color: var(--text-secondary); text-decoration: none; }
.footer-links a:hover { color: var(--accent); }

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .article-card:nth-child(3n) { padding-right: 32px; }
  .article-card:nth-child(2n) { padding-right: 0; }
  .featured-grid { grid-template-columns: 1fr; gap: 24px; }
  .stat-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .articles-grid { grid-template-columns: 1fr; }
  .article-card { padding-right: 0 !important; }
  .header-inner { padding: 0 16px; }
  nav a.cta { padding: 6px 14px; font-size: 0.8rem; }
  .hero { padding: 48px 16px 40px; }
  .article-wrap { padding: 32px 16px 60px; }
}