/* ============================================================
   ASHTRO — Design system
   Grounded in the Jantar Mantar observatory: brass instruments,
   inked star-charts, ivory manuscript pages, deep night sky.
   The "this is AI" disclosure is treated as an inscribed brass
   plaque — a recurring signature element, not fine print.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,wght@0,400;0,500;0,600;1,400;1,500&family=Manrope:wght@400;500;600;700;800&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --bg:         #f7f0df;
  --bg-soft:    #efe3c4;
  --ink:        #211c3d;
  --ink-soft:   #fffcf4;
  --ink-softer: #f2e7cd;
  --brass:      #b9853f;
  --brass-light:#8a6529;
  --brass-dim:  #cda76a;
  --ivory:      #221f3f;
  --ivory-dim:  #4c4569;
  --terracotta: #9c4536;
  --mist:       #6c6584;
  --line:       rgba(33,28,61,0.14);

  --display: 'Newsreader', serif;
  --body: 'Manrope', sans-serif;
  --mono: 'IBM Plex Mono', monospace;

  --radius: 14px;
  --radius-sm: 8px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--bg);
  color: var(--ivory);
  font-family: var(--body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
button{ font-family: inherit; cursor:pointer; }

.container{
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- Brass plaque ribbon (site-wide AI disclosure) ---------- */
.plaque-ribbon{
  background: linear-gradient(90deg, var(--brass-dim), var(--brass) 45%, var(--brass-dim));
  color: var(--ink);
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  text-align: center;
  padding: 8px 16px;
  position: relative;
}
.plaque-ribbon b{ font-weight: 600; }
.plaque-ribbon::before, .plaque-ribbon::after{
  content: "◆";
  margin: 0 10px;
  opacity: 0.6;
}

/* ---------- Nav ---------- */
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.nav .logo{
  font-family: var(--display);
  font-style: italic;
  font-size: 26px;
  font-weight: 500;
  color: var(--ivory);
  letter-spacing: 0.01em;
}
.nav .logo span{ color: var(--brass-light); }
.nav-links{
  display:flex;
  gap: 32px;
  align-items:center;
  font-size: 14.5px;
  color: var(--mist);
}
.nav-links a:hover{ color: var(--ivory); }
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding: 11px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 14.5px;
  font-weight: 600;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn-primary{
  background: var(--brass);
  color: var(--ink);
}
.btn-primary:hover{ background: var(--brass-dim); transform: translateY(-1px); }
.btn-ghost{
  border-color: var(--line);
  color: var(--ivory);
}
.btn-ghost:hover{ border-color: var(--brass); color: var(--brass-light); }

/* ---------- Hero ---------- */
.hero{
  padding: 88px 0 64px;
  display:grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items:center;
}
.hero-eyebrow{
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--brass-light);
  text-transform: uppercase;
  margin-bottom: 18px;
  display:flex;
  align-items:center;
  gap: 10px;
}
.hero-eyebrow::before{
  content:"";
  width: 22px; height:1px;
  background: var(--brass);
}
.hero h1{
  font-family: var(--display);
  font-weight: 500;
  font-size: 52px;
  line-height: 1.12;
  margin: 0 0 22px;
  color: var(--ivory);
}
.hero h1 em{
  font-style: italic;
  color: var(--brass-light);
}
.hero p.lede{
  font-size: 17px;
  color: var(--mist);
  max-width: 480px;
  margin: 0 0 32px;
}
.hero-ctas{
  display:flex;
  gap:14px;
  margin-bottom: 36px;
}
.hero-plaque{
  display:inline-flex;
  align-items:center;
  gap:10px;
  border: 1px solid var(--brass-dim);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--brass-light);
  background: rgba(201,151,79,0.06);
}

/* ---------- Armillary sphere SVG ---------- */
.armillary-wrap{
  display:flex;
  align-items:center;
  justify-content:center;
}
.armillary{
  animation: spin 90s linear infinite;
  transform-origin: 50% 50%;
}
.armillary .ring2{ animation: spin 60s linear infinite reverse; transform-origin: 200px 200px; }
.armillary .ring3{ animation: spin 40s linear infinite; transform-origin: 200px 200px; }
@keyframes spin{ from{ transform: rotate(0deg);} to{ transform: rotate(360deg);} }
@media (prefers-reduced-motion: reduce){
  .armillary, .armillary .ring2, .armillary .ring3{ animation: none; }
}

/* ---------- Stat plaques row ---------- */
.stats-row{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 8px 0 72px;
}
.stat-plaque{
  background: var(--ink-soft);
  padding: 24px 22px;
  text-align:center;
}
.stat-plaque .num{
  font-family: var(--mono);
  font-size: 26px;
  color: var(--brass-light);
  display:block;
  margin-bottom: 6px;
}
.stat-plaque .label{
  font-size: 12.5px;
  color: var(--mist);
}

/* ---------- Section headers ---------- */
.section{ padding: 64px 0; }
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  margin-bottom: 36px;
  gap: 24px;
  flex-wrap: wrap;
}
.section-head h2{
  font-family: var(--display);
  font-weight: 500;
  font-size: 32px;
  margin:0;
  color: var(--ivory);
}
.section-head p{
  color: var(--mist);
  font-size: 15px;
  margin: 6px 0 0;
}

/* ---------- Specialty tiles ---------- */
.tile-grid{
  display:grid;
  grid-template-columns: repeat(auto-fill, minmax(150px,1fr));
  gap: 14px;
}
.tile{
  background: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 16px;
  transition: border-color .15s ease, transform .15s ease;
}
.tile:hover{ border-color: var(--brass-dim); transform: translateY(-2px); }
.tile .icon{ color: var(--brass-light); margin-bottom: 12px; }
.tile .name{ font-size: 14px; font-weight: 600; color: var(--ivory); }
.tile .count{ font-size: 12px; color: var(--mist); margin-top: 3px; font-family: var(--mono); }

/* ---------- How it works ---------- */
.steps{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.step{
  border-left: 2px solid var(--brass-dim);
  padding-left: 20px;
}
.step .n{
  font-family: var(--mono);
  color: var(--brass-light);
  font-size: 13px;
  margin-bottom: 10px;
  display:block;
}
.step h3{
  font-family: var(--display);
  font-size: 20px;
  font-weight: 500;
  margin: 0 0 8px;
  color: var(--ivory);
}
.step p{ color: var(--mist); font-size: 14.5px; margin:0; }

/* ---------- Persona cards ---------- */
.persona-grid{
  display:grid;
  grid-template-columns: repeat(auto-fill, minmax(260px,1fr));
  gap: 20px;
}
.persona-card{
  background: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  display:flex;
  flex-direction:column;
  gap: 14px;
  transition: border-color .15s ease, transform .15s ease;
}
.persona-card:hover{ border-color: var(--brass-dim); transform: translateY(-3px); }
.persona-top{
  display:flex;
  gap: 14px;
  align-items:flex-start;
}
.avatar{
  width: 56px; height:56px;
  border-radius: 50%;
  flex-shrink:0;
  display:flex;
  align-items:center;
  justify-content:center;
  background: radial-gradient(circle at 30% 30%, var(--ink-softer), var(--bg-soft));
  border: 1px solid var(--brass-dim);
  color: var(--brass-light);
}
.persona-name{
  font-family: var(--display);
  font-size: 17px;
  font-weight: 500;
  color: var(--ivory);
  margin: 0 0 4px;
}
.persona-specialty{
  font-size: 12.5px;
  color: var(--brass-light);
  font-family: var(--mono);
}
.persona-tagline{
  font-size: 13.5px;
  color: var(--mist);
  margin:0;
  min-height: 36px;
}
.persona-meta{
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size: 12.5px;
  color: var(--mist);
  border-top: 1px solid var(--line);
  padding-top: 12px;
}
.persona-meta .rating{ color: var(--brass-light); font-family: var(--mono); }
.persona-rate{
  font-family: var(--mono);
  color: var(--ivory);
  font-size: 13.5px;
}
.ai-plaque{
  display:inline-flex;
  align-items:center;
  gap:5px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--brass);
  border-radius: 4px;
  padding: 3px 7px;
  width: fit-content;
}
.persona-footer{
  display:flex;
  gap:10px;
  align-items:center;
}
.chat-btn{
  flex:1;
  text-align:center;
  padding: 10px 0;
  border-radius: 999px;
  background: var(--brass);
  color: var(--ink);
  font-weight: 700;
  font-size: 13.5px;
  border:none;
}
.chat-btn:hover{ background: var(--brass-dim); }
.lang-tags{
  font-size: 11px;
  color: var(--mist);
  font-family: var(--mono);
}

/* ---------- Filter chips ---------- */
.filters{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-bottom: 32px;
}
.chip{
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--mist);
  background: transparent;
}
.chip.active{
  background: var(--brass);
  border-color: var(--brass);
  color: var(--ink);
  font-weight: 700;
}
.chip:hover:not(.active){ border-color: var(--brass-dim); color: var(--ivory); }

.search-row{
  display:flex;
  gap:12px;
  margin-bottom: 20px;
}
.search-input{
  flex:1;
  background: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--ivory);
  font-family: var(--body);
  font-size: 14px;
}
.search-input::placeholder{ color: var(--mist); }
.search-input:focus{ outline: 2px solid var(--brass); outline-offset: 1px; }

/* ---------- Footer ---------- */
.footer{
  border-top: 1px solid var(--line);
  padding: 48px 0 32px;
  margin-top: 40px;
}
.footer-plaque{
  background: var(--ink-soft);
  border: 1px solid var(--brass-dim);
  border-radius: var(--radius);
  padding: 20px 24px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ivory-dim);
  margin-bottom: 28px;
  line-height: 1.7;
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size: 13px;
  color: var(--mist);
  flex-wrap:wrap;
  gap:12px;
}
.footer-links{ display:flex; gap:20px; }
.footer-links a:hover{ color: var(--brass-light); }

/* ---------- Responsive ---------- */
@media (max-width: 880px){
  .hero{ grid-template-columns: 1fr; }
  .armillary-wrap{ order:-1; }
  .hero h1{ font-size: 38px; }
  .stats-row{ grid-template-columns: repeat(2,1fr); }
  .steps{ grid-template-columns: 1fr; }
  .nav-links{ display:none; }
}

/* ---------- Focus visibility ---------- */
a:focus-visible, button:focus-visible, .chip:focus-visible{
  outline: 2px solid var(--brass-light);
  outline-offset: 2px;
}