/* =========================================================
   AIVORNEX — Design System
   Editorial-futurist. Serif display + geometric sans body.
   Dark ink theme by default, warm paper light theme optional.
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,500;0,9..144,600;0,9..144,700;1,9..144,400;1,9..144,500&family=Manrope:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root{
  --ink-950:#08090c;
  --ink-900:#0d0f14;
  --ink-850:#12151c;
  --ink-800:#171a23;
  --ink-700:#22262f;
  --ink-600:#333844;
  --ink-500:#4a5060;
  --ink-300:#8a90a0;
  --ink-100:#c7cbd6;
  --paper:#e9e6dd;

  --signal:#5eead4;
  --signal-dim:#2fb8a4;
  --amber:#f5a623;
  --coral:#ff6b5e;

  --bg:var(--ink-950);
  --bg-elev:var(--ink-900);
  --bg-card:rgba(255,255,255,0.035);
  --border:rgba(255,255,255,0.08);
  --text:#eef0f4;
  --text-dim:var(--ink-300);
  --text-faint:var(--ink-500);
  --accent:var(--signal);
  --accent-2:var(--amber);

  --font-display:'Fraunces', serif;
  --font-body:'Manrope', sans-serif;
  --font-mono:'JetBrains Mono', monospace;

  --radius-sm:10px;
  --radius-md:18px;
  --radius-lg:28px;

  --ease:cubic-bezier(.16,1,.3,1);
  --container:1240px;
}

[data-theme="light"]{
  --bg:var(--paper);
  --bg-elev:#f4f1e9;
  --bg-card:rgba(20,18,10,0.035);
  --border:rgba(20,18,10,0.1);
  --text:#181712;
  --text-dim:#5a5648;
  --text-faint:#8b8672;
  --ink-950:#08090c;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  transition:background .4s var(--ease), color .4s var(--ease);
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
button{font-family:inherit;}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:600;
  letter-spacing:-0.01em;
  line-height:1.08;
  margin:0 0 .5em;
}
h1{font-weight:500;}
p{margin:0 0 1em;color:var(--text-dim);}

.mono{font-family:var(--font-mono);letter-spacing:.02em;}

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
  position:relative;
}

/* ---------- Background atmosphere ---------- */
.bg-atmosphere{
  position:fixed;
  inset:0;
  z-index:-2;
  overflow:hidden;
  pointer-events:none;
}
.bg-atmosphere::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(255,255,255,0.045) 1px, transparent 0);
  background-size:34px 34px;
  opacity:.5;
}
[data-theme="light"] .bg-atmosphere::before{
  background-image:radial-gradient(circle at 1px 1px, rgba(0,0,0,0.05) 1px, transparent 0);
}
.blob{
  position:absolute;
  border-radius:50%;
  filter:blur(90px);
  opacity:.28;
  animation:drift 26s ease-in-out infinite alternate;
}
.blob-a{width:520px;height:520px;background:var(--signal);top:-160px;left:-120px;}
.blob-b{width:460px;height:460px;background:var(--coral);bottom:-140px;right:-80px;animation-delay:-8s;}
.blob-c{width:380px;height:380px;background:var(--amber);top:40%;left:60%;animation-delay:-14s;opacity:.18;}
@keyframes drift{
  0%{transform:translate(0,0) scale(1);}
  50%{transform:translate(60px,-40px) scale(1.12);}
  100%{transform:translate(-40px,30px) scale(0.94);}
}
.grain{
  position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.045;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Navbar ---------- */
.navbar{
  position:sticky;top:0;z-index:100;
  backdrop-filter:blur(16px) saturate(140%);
  background:color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom:1px solid var(--border);
  transition:background .4s var(--ease);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 28px;
  max-width:var(--container);margin:0 auto;
}
.brand{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-display);
  font-size:1.35rem;font-weight:600;
  color:var(--text);
}
.brand .mark{
  width:32px;height:32px;border-radius:9px;
  background:linear-gradient(135deg, var(--signal), var(--amber));
  display:flex;align-items:center;justify-content:center;
  color:var(--ink-950);font-weight:800;font-size:1rem;font-family:var(--font-mono);
  box-shadow:0 0 0 1px rgba(255,255,255,.15) inset;
}
.nav-links{
  display:flex;align-items:center;gap:2px;
}
.nav-links a{
  padding:9px 14px;border-radius:100px;
  font-size:.92rem;font-weight:500;color:var(--text-dim);
  position:relative;transition:color .25s, background .25s;
  white-space:nowrap;
}
.nav-links a:hover{color:var(--text);background:var(--bg-card);}
.nav-links a.active{color:var(--accent);}

.nav-actions{display:flex;align-items:center;gap:10px;}

.icon-btn{
  width:38px;height:38px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-card);border:1px solid var(--border);
  color:var(--text-dim);cursor:pointer;transition:all .25s var(--ease);
}
.icon-btn:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px);}
.icon-btn svg{width:17px;height:17px;}

.menu-toggle{display:none;}

.search-pop{
  position:absolute;top:70px;right:28px;width:min(360px,90vw);
  background:var(--bg-elev);border:1px solid var(--border);
  border-radius:var(--radius-md);padding:14px;
  box-shadow:0 20px 60px rgba(0,0,0,.4);
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:all .3s var(--ease);
  z-index:120;
}
.search-pop.open{opacity:1;visibility:visible;transform:translateY(0);}
.search-pop input{
  width:100%;padding:11px 14px;border-radius:10px;
  border:1px solid var(--border);background:var(--bg-card);
  color:var(--text);font-family:var(--font-body);font-size:.9rem;outline:none;
}
.search-pop input:focus{border-color:var(--accent);}
.search-pop .hint{font-size:.75rem;color:var(--text-faint);margin-top:8px;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 24px;border-radius:100px;
  font-weight:600;font-size:.92rem;cursor:pointer;border:1px solid transparent;
  transition:transform .3s var(--ease), box-shadow .3s var(--ease), background .3s;
}
.btn-primary{
  background:linear-gradient(135deg, var(--signal), var(--signal-dim));
  color:var(--ink-950);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px -8px rgba(94,234,212,.5);}
.btn-ghost{
  background:var(--bg-card);border-color:var(--border);color:var(--text);
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:.82rem;}

/* ---------- Hero ---------- */
.hero{
  padding:96px 0 70px;
  text-align:center;
  position:relative;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:100px;
  background:var(--bg-card);border:1px solid var(--border);
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.06em;text-transform:uppercase;
  color:var(--accent);margin-bottom:28px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent);animation:pulse 2s infinite;}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.3;}}

.hero h1{
  font-size:clamp(2.6rem, 6vw, 5.2rem);
  max-width:900px;margin:0 auto 22px;
  font-style:italic;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg, var(--signal), var(--amber));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero .lede{
  max-width:620px;margin:0 auto 40px;
  font-size:1.13rem;color:var(--text-dim);
}
.hero-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:56px;}

.hero-stats{
  display:flex;justify-content:center;gap:56px;flex-wrap:wrap;
  padding-top:36px;border-top:1px solid var(--border);
  max-width:820px;margin:0 auto;
}
.hero-stats div{text-align:center;}
.hero-stats .num{
  font-family:var(--font-display);font-size:2.1rem;font-weight:600;color:var(--text);
  display:block;
}
.hero-stats .lbl{font-size:.8rem;color:var(--text-faint);text-transform:uppercase;letter-spacing:.05em;}

/* ---------- Sections ---------- */
section{padding:88px 0;}
.section-head{
  display:flex;justify-content:space-between;align-items:flex-end;
  margin-bottom:44px;flex-wrap:wrap;gap:16px;
}
.section-head h2{font-size:clamp(1.8rem,3.4vw,2.6rem);max-width:600px;}
.section-tag{
  font-family:var(--font-mono);font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;
  color:var(--accent);margin-bottom:14px;display:block;
}
.section-desc{max-width:560px;color:var(--text-dim);}
.view-all{
  font-size:.88rem;font-weight:600;color:var(--text-dim);
  display:inline-flex;align-items:center;gap:6px;
  border-bottom:1px solid var(--border);padding-bottom:2px;
  transition:color .25s,border-color .25s;
}
.view-all:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- Grid & Cards ---------- */
.grid{display:grid;gap:22px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}

.card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:26px;
  backdrop-filter:blur(10px);
  transition:transform .4s var(--ease), border-color .4s var(--ease), background .4s var(--ease);
  position:relative;
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:linear-gradient(135deg, transparent, transparent);
  opacity:0;transition:opacity .4s;
}
.card:hover{
  transform:translateY(-6px);
  border-color:color-mix(in srgb, var(--accent) 50%, var(--border));
  background:color-mix(in srgb, var(--accent) 4%, var(--bg-card));
}

.tag{
  display:inline-block;padding:4px 11px;border-radius:100px;
  font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;
  font-family:var(--font-mono);
  background:color-mix(in srgb, var(--accent) 16%, transparent);
  color:var(--accent);margin-bottom:16px;
}
.tag.amber{background:color-mix(in srgb, var(--amber) 16%, transparent);color:var(--amber);}
.tag.coral{background:color-mix(in srgb, var(--coral) 16%, transparent);color:var(--coral);}

.article-card h3{font-size:1.18rem;margin-bottom:10px;}
.article-card p{font-size:.92rem;margin-bottom:18px;}
.article-meta{
  display:flex;justify-content:space-between;align-items:center;
  font-size:.78rem;color:var(--text-faint);font-family:var(--font-mono);
  border-top:1px solid var(--border);padding-top:14px;
}

.icon-tile{
  width:46px;height:46px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg, color-mix(in srgb, var(--accent) 30%, transparent), transparent);
  border:1px solid var(--border);margin-bottom:18px;
  font-size:1.3rem;
}

/* Tool card */
.tool-card{display:flex;flex-direction:column;height:100%;}
.tool-card .name{font-family:var(--font-display);font-size:1.15rem;margin-bottom:6px;}
.tool-card .cat{font-size:.78rem;color:var(--text-faint);margin-bottom:14px;font-family:var(--font-mono);}
.tool-card p{font-size:.88rem;flex:1;}

/* Model card */
.model-card{position:relative;}
.model-card .badge{
  position:absolute;top:22px;right:22px;font-family:var(--font-mono);font-size:.7rem;color:var(--text-faint);
}

/* Startup spotlight */
.startup-card{display:flex;gap:20px;align-items:flex-start;}
.startup-logo{
  width:52px;height:52px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(135deg, var(--ink-700), var(--ink-800));
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-display);font-weight:600;font-size:1.2rem;color:var(--accent);
  border:1px solid var(--border);
}

/* ---------- Newsletter ---------- */
.newsletter{
  border-radius:var(--radius-lg);
  border:1px solid var(--border);
  background:linear-gradient(135deg, color-mix(in srgb, var(--signal) 8%, var(--bg-elev)), var(--bg-elev));
  padding:56px;text-align:center;position:relative;overflow:hidden;
}
.newsletter h2{font-size:clamp(1.7rem,3vw,2.4rem);max-width:560px;margin:0 auto 12px;}
.newsletter p{max-width:480px;margin:0 auto 30px;}
.newsletter-form{
  display:flex;gap:10px;justify-content:center;max-width:460px;margin:0 auto;flex-wrap:wrap;
}
.newsletter-form input{
  flex:1;min-width:220px;padding:14px 18px;border-radius:100px;
  border:1px solid var(--border);background:var(--bg-card);color:var(--text);
  font-family:var(--font-body);outline:none;font-size:.92rem;
}
.newsletter-form input:focus{border-color:var(--accent);}
.form-note{margin-top:14px;font-size:.76rem;color:var(--text-faint);}

/* ---------- FAQ ---------- */
.faq-item{
  border-bottom:1px solid var(--border);padding:22px 0;cursor:pointer;
}
.faq-q{display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:1.02rem;gap:20px;}
.faq-q .plus{font-family:var(--font-mono);font-size:1.3rem;color:var(--accent);transition:transform .3s var(--ease);flex-shrink:0;}
.faq-item.open .plus{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease);}
.faq-item.open .faq-a{max-height:240px;}
.faq-a p{padding-top:14px;margin:0;font-size:.94rem;}

/* ---------- Footer ---------- */
footer{
  border-top:1px solid var(--border);
  padding:64px 0 28px;
  margin-top:40px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:32px;margin-bottom:48px;
}
.footer-brand p{font-size:.88rem;max-width:280px;}
.footer-col h4{font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint);margin-bottom:16px;font-family:var(--font-mono);}
.footer-col a{display:block;padding:6px 0;font-size:.9rem;color:var(--text-dim);transition:color .2s;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;
  padding-top:26px;border-top:1px solid var(--border);
  font-size:.82rem;color:var(--text-faint);
}
.socials{display:flex;gap:10px;}

/* ---------- Page header (inner pages) ---------- */
.page-header{padding:64px 0 40px;}
.breadcrumbs{
  display:flex;gap:8px;align-items:center;font-size:.82rem;color:var(--text-faint);margin-bottom:20px;
  font-family:var(--font-mono);
}
.breadcrumbs a:hover{color:var(--accent);}
.breadcrumbs .sep{opacity:.5;}
.page-header h1{font-size:clamp(2.2rem,4.5vw,3.4rem);max-width:760px;}
.filter-row{display:flex;gap:10px;flex-wrap:wrap;margin:28px 0 8px;}
.chip{
  padding:8px 16px;border-radius:100px;border:1px solid var(--border);
  background:var(--bg-card);font-size:.83rem;font-weight:600;color:var(--text-dim);cursor:pointer;
  transition:all .25s;
}
.chip.active,.chip:hover{border-color:var(--accent);color:var(--accent);}

/* Article page */
.article-body{max-width:740px;margin:0 auto;}
.article-body h2{font-size:1.6rem;margin-top:2em;}
.article-body h3{font-size:1.25rem;margin-top:1.6em;}
.article-body p{color:var(--text-dim);font-size:1.02rem;}
.article-body blockquote{
  border-left:3px solid var(--accent);padding:4px 0 4px 22px;margin:2em 0;
  font-family:var(--font-display);font-style:italic;font-size:1.2rem;color:var(--text);
}
.article-hero-meta{display:flex;gap:18px;align-items:center;color:var(--text-faint);font-size:.85rem;font-family:var(--font-mono);margin-bottom:30px;flex-wrap:wrap;}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:40px;}
.contact-info .info-row{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--border);}
.contact-info .info-row .lbl{font-family:var(--font-mono);font-size:.78rem;color:var(--text-faint);text-transform:uppercase;letter-spacing:.05em;min-width:110px;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-grid .full{grid-column:1/-1;}
.field label{display:block;font-size:.82rem;color:var(--text-faint);margin-bottom:8px;font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.04em;}
.field input,.field textarea,.field select{
  width:100%;padding:13px 16px;border-radius:10px;border:1px solid var(--border);
  background:var(--bg-card);color:var(--text);font-family:var(--font-body);outline:none;font-size:.92rem;
  transition:border-color .25s;
}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--accent);}
.field textarea{resize:vertical;min-height:120px;}
.form-disclaimer{
  margin-top:18px;padding:14px 18px;border-radius:12px;background:var(--bg-card);border:1px dashed var(--border);
  font-size:.82rem;color:var(--text-faint);
}

/* Legal pages */
.legal-body{max-width:760px;margin:0 auto;}
.legal-body h2{font-size:1.4rem;margin-top:1.8em;}
.legal-body p,.legal-body li{color:var(--text-dim);font-size:.96rem;}
.legal-body li{margin-bottom:8px;padding-left:2px;}
.legal-body ul{padding-left:20px;list-style:disc;margin-bottom:1.2em;}
.updated-badge{
  display:inline-block;padding:6px 14px;border-radius:100px;background:var(--bg-card);
  border:1px solid var(--border);font-family:var(--font-mono);font-size:.75rem;color:var(--text-faint);margin-bottom:24px;
}

/* 404 */
.page-404{text-align:center;padding:120px 0;}
.page-404 .code{
  font-family:var(--font-display);font-size:clamp(6rem,18vw,11rem);font-weight:600;line-height:1;
  background:linear-gradient(120deg,var(--signal),var(--amber));-webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s var(--ease), transform .8s var(--ease);}
.reveal.in-view{opacity:1;transform:translateY(0);}
.reveal-stagger > *{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease), transform .7s var(--ease);}
.reveal-stagger.in-view > *{opacity:1;transform:translateY(0);}
.reveal-stagger.in-view > *:nth-child(1){transition-delay:.05s;}
.reveal-stagger.in-view > *:nth-child(2){transition-delay:.12s;}
.reveal-stagger.in-view > *:nth-child(3){transition-delay:.19s;}
.reveal-stagger.in-view > *:nth-child(4){transition-delay:.26s;}
.reveal-stagger.in-view > *:nth-child(5){transition-delay:.33s;}
.reveal-stagger.in-view > *:nth-child(6){transition-delay:.4s;}
.reveal-stagger.in-view > *:nth-child(7){transition-delay:.47s;}
.reveal-stagger.in-view > *:nth-child(8){transition-delay:.54s;}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .contact-grid{grid-template-columns:1fr;}
}
@media (max-width:760px){
  .nav-links{
    position:fixed;top:70px;left:0;right:0;bottom:0;
    background:var(--bg);
    flex-direction:column;align-items:stretch;padding:20px 24px;
    gap:4px;
    transform:translateX(100%);
    transition:transform .4s var(--ease);
    z-index:90;
    overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-links a{padding:14px 16px;font-size:1.05rem;border-radius:12px;}
  .menu-toggle{
    display:flex;width:38px;height:38px;border-radius:10px;align-items:center;justify-content:center;
    background:var(--bg-card);border:1px solid var(--border);color:var(--text);cursor:pointer;
  }
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .form-grid{grid-template-columns:1fr;}
  .newsletter{padding:36px 22px;}
  .hero-stats{gap:32px;}
  section{padding:60px 0;}
}