@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,600;1,400&family=DM+Sans:wght@400;500;600;700&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --sans: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --serif: 'Lora', Georgia, serif;

  --ink:        #1C1917;
  --ink-2:      #44403C;
  --ink-3:      #78716C;
  --bg:         #FAFAF8;
  --bg-warm:    #F5F0E8;
  --bg-card:    #FFFFFF;
  --border:     #E7E2D9;
  --border-2:   #D1C9BC;

  --accent:     #2D5BE3;
  --accent-h:   #1E45C2;
  --accent-bg:  #EEF2FD;
  --gold:       #C8820A;
  --gold-bg:    #FEF3DC;

  --max-width: 780px;
  --radius: 10px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.8;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: color .15s; }
a:hover { color: var(--accent-h); text-decoration: underline; }

/* ─── HEADER ─────────────────────────────── */
.site-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 0 var(--border);
}
.site-header::before {
  content: '';
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--accent) 0%, #7B9EF5 100%);
}
.site-header .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.site-header .logo {
  font-family: var(--sans);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.03em;
  text-decoration: none;
  flex-shrink: 0;
}
.site-header .logo:hover { text-decoration: none; color: var(--ink); }
.site-header .logo span { color: var(--accent); }

.site-header nav {
  display: flex;
  gap: 0.25rem;
  font-size: 0.875rem;
  font-family: var(--sans);
}
.site-header nav a {
  color: var(--ink-3);
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  transition: background .15s, color .15s;
  text-decoration: none;
}
.site-header nav a:hover {
  color: var(--accent);
  background: var(--accent-bg);
  text-decoration: none;
}

/* ─── HERO ───────────────────────────────── */
.hero {
  background: var(--bg-warm);
  border-bottom: 1px solid var(--border);
  padding: 4rem 1.5rem 3.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 40px;
  background: var(--bg);
  clip-path: ellipse(55% 100% at 50% 100%);
}
.hero h1 {
  font-family: var(--sans);
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 0.9rem;
  position: relative;
}
.hero p {
  font-family: var(--sans);
  font-size: 1.05rem;
  color: var(--ink-2);
  max-width: 480px;
  margin: 0 auto 2rem;
  line-height: 1.6;
  position: relative;
}
.hero .app-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--accent);
  color: #fff;
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.65rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  transition: background .15s, transform .15s, box-shadow .15s;
  box-shadow: 0 2px 8px rgba(45,91,227,.25);
  position: relative;
}
.hero .app-link:hover {
  background: var(--accent-h);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(45,91,227,.35);
  color: #fff;
  text-decoration: none;
}

/* ─── MAIN ───────────────────────────────── */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

/* ─── ARTICLE CARDS (index) ──────────────── */
.article-grid { display: flex; flex-direction: column; }

.article-card {
  display: grid;
  grid-template-columns: 1fr;
  padding: 2rem 1.5rem;
  margin-bottom: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color .2s, box-shadow .2s, transform .2s;
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
}
.article-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform .25s ease;
}
.article-card:hover {
  border-color: var(--border-2);
  box-shadow: 0 4px 20px rgba(28,25,23,.07);
  transform: translateY(-2px);
}
.article-card:hover::before { transform: scaleY(1); }

.article-card .category {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.article-card h2 {
  font-family: var(--sans);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
  margin-bottom: 0.6rem;
  letter-spacing: -0.02em;
}
.article-card h2 a { color: inherit; text-decoration: none; }
.article-card h2 a:hover { color: var(--accent); text-decoration: none; }
.article-card p {
  font-family: var(--sans);
  font-size: 0.925rem;
  color: var(--ink-3);
  line-height: 1.65;
  margin-bottom: 1rem;
}
.article-card .read-more {
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}
.article-card .read-more::after {
  content: '→';
  transition: transform .2s;
  display: inline-block;
}
.article-card:hover .read-more::after { transform: translateX(3px); }

/* ─── ARTICLE HEADER ─────────────────────── */
.article-header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}
.article-header .category {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  background: var(--accent-bg);
  display: inline-block;
  padding: 0.25rem 0.7rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}
.article-header h1 {
  font-family: var(--sans);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: 1rem;
}
.article-header .meta {
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--ink-3);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.article-header .meta::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 2px;
  background: var(--border-2);
  border-radius: 2px;
}

/* ─── ARTICLE BODY ───────────────────────── */
.article-body h2 {
  font-family: var(--sans);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 2.5rem 0 0.8rem;
  color: var(--ink);
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}
.article-body h3 {
  font-family: var(--sans);
  font-size: 1.05rem;
  font-weight: 700;
  margin: 2rem 0 0.5rem;
  color: var(--ink-2);
}
.article-body p { margin-bottom: 1.35rem; }
.article-body ul, .article-body ol {
  margin: 0 0 1.35rem 0;
  padding-left: 0;
  list-style: none;
}
.article-body li {
  padding: 0.3rem 0 0.3rem 1.5rem;
  position: relative;
  margin-bottom: 0.2rem;
}
.article-body ul li::before {
  content: '•';
  position: absolute;
  left: 0.4rem;
  color: var(--accent);
  font-weight: 700;
}
.article-body ol { counter-reset: ol; }
.article-body ol li { counter-increment: ol; }
.article-body ol li::before {
  content: counter(ol);
  position: absolute;
  left: 0;
  width: 1.2rem;
  text-align: right;
  color: var(--accent);
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 700;
  top: 0.38rem;
}
.article-body strong { font-weight: 700; color: var(--ink); }

/* ─── CALLOUT ────────────────────────────── */
.callout {
  background: var(--gold-bg);
  border: 1px solid #F0D08A;
  border-left: 4px solid var(--gold);
  padding: 1.1rem 1.4rem;
  margin: 2rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: var(--sans);
  font-size: 0.925rem;
  line-height: 1.65;
  color: var(--ink-2);
}
.callout strong {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gold);
  margin-bottom: 0.4rem;
}
.callout strong::before {
  content: '★';
  font-size: 0.75rem;
}

/* ─── BACK LINK ──────────────────────────── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink-3);
  margin-bottom: 2.5rem;
  padding: 0.4rem 0.75rem 0.4rem 0.5rem;
  border-radius: 6px;
  transition: background .15s, color .15s;
  text-decoration: none;
}
.back-link::before { content: '←'; font-size: 1rem; }
.back-link:hover {
  color: var(--accent);
  background: var(--accent-bg);
  text-decoration: none;
}

/* ─── FOOTER ─────────────────────────────── */
.site-footer {
  background: var(--ink);
  border-top: none;
  padding: 2.5rem 1.5rem;
  font-family: var(--sans);
  font-size: 0.85rem;
  color: #A8A29E;
}
.site-footer .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.site-footer nav { display: flex; gap: 1.5rem; }
.site-footer nav a { color: #A8A29E; text-decoration: none; transition: color .15s; }
.site-footer nav a:hover { color: #fff; text-decoration: none; }

/* ─── SIMPLE PAGES ───────────────────────── */
.simple-page h1 {
  font-family: var(--sans);
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 2px solid var(--border);
}
.simple-page h2 {
  font-family: var(--sans);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink);
  margin: 2.25rem 0 0.6rem;
}
.simple-page p { font-family: var(--sans); font-size: 0.975rem; margin-bottom: 1rem; line-height: 1.7; }
.simple-page ul { margin: 0 0 1rem 0; padding-left: 0; list-style: none; }
.simple-page li { padding: 0.2rem 0 0.2rem 1.4rem; position: relative; }
.simple-page li::before { content: '→'; position: absolute; left: 0; color: var(--accent); font-size: 0.85rem; top: 0.25rem; }

/* ─── RESPONSIVE ─────────────────────────── */
@media (max-width: 640px) {
  body { font-size: 17px; }
  .hero { padding: 3rem 1.25rem 2.75rem; }
  .hero h1 { font-size: 1.6rem; }
  .hero::after { display: none; }
  .article-header h1 { font-size: 1.5rem; }
  .site-header .inner { padding: 0 1rem; }
  .site-header nav a { padding: 0.3rem 0.5rem; font-size: 0.8rem; }
  main { padding: 2rem 1rem 4rem; }
  .article-card { padding: 1.25rem 1.1rem; }
}