/*
Theme Name: AIR Research
Theme URI: https://github.com/air-research/theme
Author: Advanced Intelligence Research
Description: Sophisticated research theme matching the AIR HTML design exactly — neural animation, dark/light mode, bento grid, Gutenberg blocks.
Version: 1.3.8
Requires at least: 6.4
Tested up to: 6.7
Requires PHP: 8.0
License: CC BY-NC 4.0
Text Domain: air-research
*/

/* ═══ TOKENS (exact from HTML) ═══════════════════════════════════════════ */
:root{
  --v:#7c3aed;--vl:#a78bfa;--vd:#4c1d95;
  --f:'Barlow',sans-serif;--fd:'DM Serif Display',serif;
  --nh:68px;--px:clamp(28px,5.5vw,80px);
}
html.air-dark{
  --bg:#06060c;--bg2:#0d0e1c;--bg3:#111126;
  --text:#f0effa;--muted:#52526a;
  --border:rgba(240,239,250,0.06);
  --nav-bg:rgba(6,6,12,0.9);
  --card:#0d0e1c;
  --grad:linear-gradient(to right,
    #06060c 0%,#06060c 38%,
    rgba(6,6,12,.97) 50%,
    rgba(6,6,12,.78) 63%,
    rgba(6,6,12,.28) 76%,
    transparent 90%);
  color-scheme:dark;
}
html.air-light{
  --bg:#f8f8fc;--bg2:#ffffff;--bg3:#f0effa;
  --text:#0d0e1c;--muted:#5c5c74;
  --border:rgba(13,14,28,0.08);
  --nav-bg:rgba(248,248,252,0.92);
  --card:#ffffff;
  --grad:linear-gradient(to right,
    #f8f8fc 0%,#f8f8fc 38%,
    rgba(248,248,252,.97) 50%,
    rgba(248,248,252,.78) 63%,
    rgba(248,248,252,.28) 76%,
    transparent 90%);
  color-scheme:light;
}

/* ═══ RESET ═══════════════════════════════════════════════════════════════ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;height:100%;}
body{
  background:var(--bg);color:var(--text);font-family:var(--f);font-weight:300;
  line-height:1.75;-webkit-font-smoothing:antialiased;
  transition:background .3s,color .3s;min-height:100%;
  display:flex;flex-direction:column;
}
body.admin-bar .site-nav{top:32px;}
@media screen and (max-width:782px){body.admin-bar .site-nav{top:46px;}}
a{color:var(--vl);text-decoration:none;transition:color .18s;}
a:hover{color:var(--text);}
img{max-width:100%;height:auto;display:block;}

/* ═══ NAV (exact from HTML) ══════════════════════════════════════════════ */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:var(--nh);display:flex;align-items:center;
  justify-content:space-between;padding:0 var(--px);
  background:var(--nav-bg);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
  transition:background .3s,border-color .3s;
}
.nav-logo{
  font-size:11px;font-weight:400;letter-spacing:.28em;
  text-transform:uppercase;color:var(--muted);
  white-space:nowrap;background:none;border:none;cursor:pointer;
  font-family:var(--f);text-decoration:none;transition:color .18s;
}
.nav-logo .accent{color:var(--vl);}
.nav-logo:hover{color:var(--text);}
.nav-right{display:flex;align-items:center;gap:36px;flex-shrink:0;}
.nav-link{
  font-size:11px;font-weight:400;letter-spacing:.22em;
  text-transform:uppercase;color:var(--muted);
  white-space:nowrap;background:none;border:none;cursor:pointer;
  font-family:var(--f);transition:color .18s;padding:0;text-decoration:none;
}
.nav-link:hover,.nav-link.active{color:var(--text);}
.theme-btn{
  background:none;border:1px solid var(--border);border-radius:50%;
  width:32px;height:32px;cursor:pointer;display:flex;align-items:center;
  justify-content:center;color:var(--muted);flex-shrink:0;
  transition:border-color .18s,color .18s;
}
.theme-btn:hover{border-color:var(--v);color:var(--vl);}
.i-moon{display:block;}.i-sun{display:none;}
html.air-light .i-moon{display:none;}html.air-light .i-sun{display:block;}

/* ═══ MOBILE NAV ═════════════════════════════════════════════════════════ */
.nav-hamburger{
  display:none;width:32px;height:32px;
  background:none;border:none;cursor:pointer;
  flex-direction:column;justify-content:center;align-items:center;gap:6px;
  flex-shrink:0;padding:0;
}
.nav-hamburger span{
  display:block;width:18px;height:1px;background:var(--muted);
  transition:transform .28s ease,opacity .18s,background .18s;
  transform-origin:center;
}
.nav-hamburger.open span:first-child{
  transform:translateY(7px) rotate(45deg);background:var(--text);
}
.nav-hamburger.open span:last-child{
  transform:translateY(-7px) rotate(-45deg);background:var(--text);
}
.mobile-nav{
  display:none;position:fixed;inset:0;z-index:998;
  background:var(--bg);
  flex-direction:column;justify-content:flex-start;padding-top:var(--nh);
  opacity:0;transition:opacity .22s;
}
.mobile-nav.open{display:flex;opacity:1;}
.mobile-nav-inner{
  padding:0 var(--px);
  display:flex;flex-direction:column;
}
.mobile-nav-inner .m-link{
  font-size:clamp(22px,5vw,32px);font-weight:300;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted);padding:22px 0;
  border-bottom:1px solid var(--border);display:block;
  transition:color .18s;text-decoration:none;font-family:var(--f);
}
.mobile-nav-inner .m-link:first-child{border-top:1px solid var(--border);}
.mobile-nav-inner .m-link:hover,.mobile-nav-inner .m-link.active{color:var(--text);}
.theme-btn--mobile{display:none;} /* Default hidden until mobile view */
@media(max-width:720px){
  .nav-hamburger{display:flex;}
  .nav-right .nav-link{display:none;}
  .nav-right{gap:12px;}
  /* hide desktop toggle on mobile */
  .theme-btn--desktop{display:none!important;}
  
  /* Show mobile theme toggle naturally within the menu */
  .theme-btn--mobile{display:flex;}
  .mobile-utility {
    margin-top: 40px;
    display: flex;
    justify-content: flex-start;
  }
}

/* ═══ HERO (exact from HTML) ═════════════════════════════════════════════ */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;}
.hero-canvas-wrap{position:absolute;inset:0;z-index:0;}
.hero-canvas-wrap canvas{position:absolute;inset:0;width:100%;height:100%;}
.hero-fade{position:absolute;inset:0;z-index:1;background:var(--grad);pointer-events:none;transition:background .3s;}
.hero-content {
  position: relative;
  z-index: 2;
  width: 100%; /* Ensures it spans predictably inside the flex container */
  max-width: 600px;
  padding: calc(var(--nh) + 72px) var(--px) 80px var(--px); /* Added spaces around + */
}
.hero-eyebrow{font-size:11px;font-weight:400;letter-spacing:.32em;
  text-transform:uppercase;color:var(--v);opacity:.8;margin-bottom:28px;}
.hero-h1{
  font-family:var(--fd);font-style:italic;font-weight:400;
  font-size:clamp(44px,5.5vw,82px);line-height:1.05;letter-spacing:-.02em;
  color:var(--text);margin-bottom:32px;
}
.hero-rule{width:44px;height:1.5px;background:var(--v);margin-bottom:28px;}
.hero-desc{font-size:16px;font-weight:300;line-height:1.9;color:var(--muted);max-width:420px;}
.hero-cta{margin-top:40px;display:flex;align-items:center;gap:20px;flex-wrap:nowrap;}
.btn-primary{
  display:inline-flex;align-items:center;
  font-size:10px;font-weight:400;letter-spacing:.24em;
  text-transform:uppercase;color:var(--text);border:1px solid var(--border);
  padding:12px 24px;transition:border-color .18s;cursor:pointer;
  background:none;font-family:var(--f);white-space:nowrap;text-decoration:none;
}
.btn-primary:hover{border-color:var(--v);color:var(--text);}
.btn-ghost{
  font-size:10px;font-weight:400;letter-spacing:.2em;
  text-transform:uppercase;color:var(--muted);cursor:pointer;
  background:none;border:none;font-family:var(--f);white-space:nowrap;
  transition:color .18s;text-decoration:none;
}
.btn-ghost:hover{color:var(--text);}

/* ═══ INNER (exact from HTML) ════════════════════════════════════════════ */
.inner{max-width:1280px;margin:0 auto;padding-left:72px;padding-right:72px;}
@media(max-width:768px){.inner{padding-left:28px;padding-right:28px;}}
@media(max-width:480px){.inner{padding-left:20px;padding-right:20px;}}

/* ═══ ABOUT PAGE (exact from HTML) ══════════════════════════════════════ */
.about-page{
  padding-top:calc(var(--nh) + 64px);padding-bottom:96px;
  background:var(--bg);transition:background .3s;
}
.about-heading{
  font-size:clamp(32px,5vw,56px);font-weight:300;
  letter-spacing:-.025em;color:var(--text);margin-bottom:8px;
}
.about-rule{width:40px;height:1.5px;background:var(--v);margin-bottom:48px;}
.about-body{max-width:680px;margin-bottom:72px;}
.about-body p,.about-body .wp-block-paragraph{
  font-size:16px;font-weight:300;line-height:2.0;color:var(--muted);margin-bottom:28px;
}
.about-body p:last-child,.about-body .wp-block-paragraph:last-child{margin-bottom:0;}
.about-stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--border);padding-top:40px;max-width:860px;gap:0;
}
.about-stat{padding:0 32px 0 0;border-right:1px solid var(--border);}
.about-stat:first-child{padding-left:0;}
.about-stat:last-child{border-right:none;}
.stat-label{
  font-size:9px;font-weight:400;letter-spacing:.32em;
  text-transform:uppercase;color:var(--v);opacity:.7;margin-bottom:10px;
}
.stat-val{font-size:15px;font-weight:400;color:var(--text);}

/* ═══ OUR IDEAS (exact from HTML) ═══════════════════════════════════════ */
.ideas-page{
  padding-top:calc(var(--nh) + 56px);padding-bottom:96px;
  background:var(--bg);transition:background .3s;
}
.page-eyebrow{font-size:11px;font-weight:400;letter-spacing:.32em;
  text-transform:uppercase;color:var(--v);opacity:.8;margin-bottom:14px;}
.page-h1{font-size:clamp(32px,5vw,62px);font-weight:300;
  letter-spacing:-.025em;color:var(--text);margin-bottom:8px;}
.page-rule{width:40px;height:1.5px;background:var(--v);margin-bottom:32px;}
.page-sub{font-size:16px;font-weight:300;color:var(--muted);
  max-width:500px;margin-bottom:52px;line-height:1.8;}

/* ═══ BENTO GRID ════════════════════════════════════════════════════════ */
.bento{
  display:grid !important;
  grid-template-columns:repeat(12,minmax(0,1fr)) !important;
  grid-auto-rows:200px;gap:10px;margin-bottom:28px;
  width:100%;box-sizing:border-box;
}
.bc{
  background:var(--card);border:1px solid var(--border);padding:24px;
  position:relative;overflow:hidden;
  display:flex;flex-direction:column;justify-content:flex-end;
  cursor:pointer;transition:border-color .22s,transform .22s,background .3s;
  text-decoration:none;color:inherit;min-width:0;
}
.bc::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(124,58,237,.04),transparent 60%);
  pointer-events:none;
}
.bc:hover{border-color:rgba(124,58,237,.42);transform:translateY(-2px);}
.bento .bc:first-child{grid-column:span 8;grid-row:span 2;}
.bento .bc:not(:first-child){grid-column:span 4;}
.bc-topic{
  font-size:9px;font-weight:400;letter-spacing:.26em;
  text-transform:uppercase;color:var(--v);margin-bottom:5px;position:relative;z-index:1;
}
.bc-title{font-weight:400;color:var(--text);line-height:1.25;position:relative;z-index:1;}
.bento .bc:first-child .bc-title{font-size:clamp(17px,2.2vw,26px);margin-bottom:8px;}
.bento .bc:not(:first-child) .bc-title{font-size:14px;}
.bc-excerpt{
  font-size:13px;color:var(--muted);line-height:1.7;position:relative;z-index:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.bento .bc:not(:first-child) .bc-excerpt{display:none;}
.bc-date{
  font-size:9px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--muted);opacity:.65;margin-top:6px;position:relative;z-index:1;
}

/* ═══ SINGLE IDEA ════════════════════════════════════════════════════════ */
.single-idea-page,.single-post-page{
  padding-top:calc(var(--nh) + 64px);padding-bottom:96px;
  background:var(--bg);transition:background .3s;
}
.back-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:10px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--muted);margin-bottom:40px;transition:color .18s;text-decoration:none;
}
.back-link:hover{color:var(--text);}
.post-meta{display:flex;align-items:center;gap:20px;margin-bottom:24px;}
.post-topic{font-size:9px;font-weight:400;letter-spacing:.28em;
  text-transform:uppercase;color:var(--v);opacity:.8;}
.post-date{font-size:9px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--muted);opacity:.7;}
.post-title{
  font-size:clamp(28px,4vw,52px);font-weight:300;
  letter-spacing:-.025em;color:var(--text);line-height:1.15;margin-bottom:8px;
}
.post-rule{width:40px;height:1.5px;background:var(--v);margin-bottom:32px;}
.post-excerpt-lead{
  font-size:18px;font-weight:300;line-height:1.9;
  color:var(--muted);max-width:680px;margin-bottom:52px;
}
.entry-content{
  max-width:720px;font-size:16px;font-weight:300;line-height:2.0;color:var(--muted);
}
.entry-content h2{font-size:clamp(22px,2.5vw,32px);font-weight:300;
  color:var(--text);letter-spacing:-.02em;margin:52px 0 20px;}
.entry-content h3{font-size:clamp(18px,2vw,24px);font-weight:400;color:var(--text);margin:40px 0 16px;}
.entry-content p{margin-bottom:28px;}
.entry-content ul,.entry-content ol{padding-left:28px;margin-bottom:28px;}
.entry-content li{margin-bottom:10px;}
.entry-content blockquote{
  border-left:2px solid var(--v);padding:16px 0 16px 28px;
  margin:36px 0;font-style:italic;font-size:18px;color:var(--text);
}
.entry-content code{
  font-family:'SF Mono','Fira Code',monospace;font-size:13px;
  background:var(--bg3);border:1px solid var(--border);
  padding:2px 6px;border-radius:3px;color:var(--vl);
}
.entry-content pre{background:var(--bg2);border:1px solid var(--border);
  padding:24px;overflow-x:auto;margin-bottom:28px;}
.entry-content pre code{background:none;border:none;padding:0;}
.entry-content a{color:var(--vl);border-bottom:1px solid rgba(167,139,250,.3);}
.entry-content a:hover{border-color:var(--vl);}

/* ═══ FOOTER — padding matches nav var(--px), always left-aligned ════════ */
.site-footer{
  background:var(--bg2);border-top:1px solid var(--border);
  padding:52px var(--px) 64px;
  margin-top:auto; /* push to bottom on short pages */
  transition:background .3s,border-color .3s;
}
.footer-top{display:block;margin-bottom:28px;} /* block = both logo + nav left-aligned */
/* Spacer so body bg never shows below footer on tall viewports */
body::after{content:'';display:block;}
.footer-logo{
  font-size:13px;font-weight:400;letter-spacing:.28em;
  text-transform:uppercase;color:var(--muted);
  display:block;margin-bottom:10px;text-decoration:none;transition:color .18s;
}
.footer-logo .accent{color:var(--vl);}
.footer-logo:hover{color:var(--text);}
.footer-nav{display:flex;gap:28px;flex-wrap:wrap;}
.footer-nav a,.footer-nav button{
  font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);
  background:none;border:none;cursor:pointer;font-family:var(--f);
  transition:color .18s;text-decoration:none;
}
.footer-nav a:hover,.footer-nav button:hover{color:var(--text);}
.footer-rule{height:1px;background:var(--v);opacity:.18;margin-bottom:22px;}
.footer-copy{font-size:11px;font-weight:300;color:var(--muted);line-height:1.9;opacity:.65;}

/* ═══ GENERIC / ARCHIVE ══════════════════════════════════════════════════ */
.generic-page,.archive-page{
  padding-top:calc(var(--nh) + 64px);padding-bottom:96px;
  background:var(--bg);transition:background .3s;
}
.post-list{display:flex;flex-direction:column;}
.post-list-item{
  border-top:1px solid var(--border);padding:28px 0;
  display:flex;justify-content:space-between;align-items:flex-start;
  gap:20px;text-decoration:none;color:inherit;transition:opacity .18s;
}
.post-list-item:last-child{border-bottom:1px solid var(--border);}
.post-list-item:hover{opacity:.72;}
.post-list-item-topic{font-size:9px;letter-spacing:.26em;text-transform:uppercase;color:var(--v);margin-bottom:6px;}
.post-list-item-title{font-size:16px;font-weight:400;color:var(--text);line-height:1.4;}
.post-list-item-date{font-size:9px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--muted);opacity:.65;white-space:nowrap;margin-top:4px;}

/* ═══ 404 ════════════════════════════════════════════════════════════════ */
.page-404{padding-top:calc(var(--nh) + 64px);padding-bottom:96px;
  background:var(--bg);min-height:80vh;display:flex;align-items:center;}
.error-code{font-size:clamp(80px,12vw,160px);font-family:var(--fd);
  font-style:italic;font-weight:400;color:var(--v);opacity:.2;line-height:1;}
.error-title{font-size:clamp(24px,3vw,40px);font-weight:300;color:var(--text);margin-bottom:16px;}
.error-desc{font-size:15px;color:var(--muted);max-width:400px;margin-bottom:36px;}

/* No content */
.no-ideas,.no-posts{grid-column:span 12;text-align:center;padding:80px 0;
  font-size:13px;color:var(--muted);letter-spacing:.1em;}

/* WP */
.alignleft{float:left;margin:0 24px 24px 0;}
.alignright{float:right;margin:0 0 24px 24px;}
.aligncenter{display:block;margin:0 auto 24px;}
.alignwide{max-width:1100px;margin-left:auto;margin-right:auto;}
.alignfull{width:100vw;max-width:none;margin-left:calc(50% - 50vw);}
.screen-reader-text{clip:rect(1px,1px,1px,1px);position:absolute !important;height:1px;width:1px;overflow:hidden;}

/* ═══ RESPONSIVE (exact from HTML) ══════════════════════════════════════ */
@media(max-width:900px){
  .about-stats{grid-template-columns:repeat(2,1fr);gap:24px;}
  .about-stat{border-right:none;padding-right:0;}
}
@media(max-width:720px){
  .bento{grid-auto-rows:160px;}
  .bento .bc:first-child{grid-column:span 12;}
  .bento .bc:not(:first-child){grid-column:span 6;}
  /* footer-top already block, nothing needed */
  .about-stats{grid-template-columns:1fr 1fr;}
  /* hero-content left padding handled by var(--px) globally */
}
@media(max-width:480px){
  .bento .bc{grid-column:span 12 !important;}
  .about-stats{grid-template-columns:1fr;}
}