/* Base */
:root{
  --bg: #ffffff;
  --text: #111111;
  --muted: #666666;
  --accent: #0f62fe;
  --border: #e6e6e6;
  --card: #f8f8f8;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:'Poppins',system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,'Helvetica Neue',Arial,"Noto Sans",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:100%;max-width:1100px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--border);z-index:10}
.nav-container{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600}
.brand-mark{display:inline-flex;width:36px;height:36px;border:1px solid var(--border);border-radius:8px;align-items:center;justify-content:center;background:var(--card)}
.brand-avatar{width:32px;height:32px;border-radius:50%;border:1px solid var(--border);object-fit:cover}
.site-nav{display:flex;gap:16px;align-items:center}
.site-nav a{padding:8px 12px;border-radius:8px;color:var(--muted);transition:all 0.2s ease}
.site-nav a.active,.site-nav a:hover{color:var(--text);background:var(--card)}
.admin-link{display:inline-flex;gap:8px;align-items:center}

/* Mobile Menu Toggle */
.mobile-menu-toggle{display:none;flex-direction:column;gap:4px;cursor:pointer;padding:8px;border:none;background:none;z-index:20}
.mobile-menu-toggle span{width:24px;height:3px;background:var(--text);border-radius:2px;transition:all 0.3s ease}
.mobile-menu-toggle.active span:nth-child(1){transform:rotate(45deg) translate(6px,6px)}
.mobile-menu-toggle.active span:nth-child(2){opacity:0}
.mobile-menu-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(6px,-6px)}

/* Hero */
.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center;padding:56px 0}
.hero h1{font-size:40px;margin:0 0 8px}
.hero .lead{color:var(--muted);margin:0 0 8px}
.stack{color:var(--muted);font-size:14px;margin:0 0 20px}
.accent{color:var(--accent)}
.hero-actions{display:flex;gap:12px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:10px;border:1px solid var(--border);background:#fff;transition:all 0.2s ease}
.btn.primary{background:var(--text);color:#fff;border-color:var(--text)}
.btn:hover{transform:translateY(-1px)}
.hero-art .code-card{border:1px solid var(--border);border-radius:12px;padding:18px;background:var(--card)}
.hero-art pre{margin:0;white-space:pre-wrap}

/* Sections */
.section-head h2{margin:0 0 4px}
.section-head p{margin:0;color:var(--muted)}
.projects{padding:24px 0 56px}
.grid.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:16px}
.card{border:1px solid var(--border);border-radius:12px;padding:16px;background:#fff}
.card-icon{font-size:22px;margin-bottom:8px}

/* CTA */
.cta-band{background:var(--card);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.cta-content{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:24px 0}

/* Footer */
.site-footer{border-top:1px solid var(--border);background:#fff}
.footer-container{display:flex;align-items:center;justify-content:space-between;height:64px}
.socials{display:flex;gap:12px}
.socials a{color:var(--muted)}
.socials a:hover{color:var(--text)}

/* Pages */
.page{padding:32px 0}
.page h1{margin:0 0 8px}
.sub{color:var(--muted);margin:0 0 16px}

/* Blog */
.posts{display:grid;gap:16px}
.post{border:1px solid var(--border);border-radius:12px;padding:16px}
.post h3{margin:0 0 6px}
.post .meta{color:var(--muted);font-size:13px;margin-bottom:8px}

/* Enhanced Blog Posts */
.posts-grid{display:grid;gap:20px;margin-top:20px}
.post-card{border:1px solid var(--border);border-radius:16px;padding:20px;background:#fff;transition:all 0.2s ease}
.post-card:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,0,0,0.1);border-color:var(--accent)}
.post-card .card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px}
.post-card .card-title{font-size:18px;font-weight:600;margin:0;color:var(--text)}
.post-card .card-meta{color:var(--muted);font-size:13px;text-align:right}
.post-card .card-excerpt{color:var(--muted);line-height:1.6;margin-bottom:16px}
.post-card .card-actions{display:flex;justify-content:space-between;align-items:center}
.post-card .read-more{color:var(--accent);font-weight:500}

/* Downloads */
.downloads-list{display:grid;gap:16px}
.download-item{border:1px solid var(--border);border-radius:12px;padding:16px;display:flex;justify-content:space-between;align-items:center}
.download-item .info{display:flex;flex-direction:column}
.download-item .info .sub{color:var(--muted);font-size:14px;margin-top:4px}
.download-item .actions{display:flex;gap:8px;align-items:center}
.download-item .btn{font-size:14px;padding:8px 12px}

/* Enhanced Downloads Grid */
.downloads-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px;margin-top:20px}
.download-card{border:1px solid var(--border);border-radius:16px;padding:20px;background:#fff;transition:all 0.2s ease}
.download-card:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,0,0,0.1);border-color:var(--accent)}
.download-card .card-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.download-card .card-icon{width:40px;height:40px;border-radius:10px;background:var(--card);display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--accent)}
.download-card .card-title{font-weight:600;margin:0}
.download-card .card-desc{color:var(--muted);margin:0 0 16px;line-height:1.5}
.download-card .card-meta{color:var(--muted);font-size:13px;margin-bottom:16px}
.download-card .card-actions{display:flex;gap:8px}

/* Enhanced Links */
.links-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;margin-top:20px}
.link-card{border:1px solid var(--border);border-radius:16px;padding:20px;background:#fff;transition:all 0.2s ease}
.link-card:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,0,0,0.1);border-color:var(--accent)}
.link-card .card-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.link-card .card-icon{width:40px;height:40px;border-radius:10px;background:var(--card);display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--accent)}
.link-card .card-title{font-weight:600;margin:0}
.link-card .card-desc{color:var(--muted);margin:0 0 16px;line-height:1.5}
.link-card .card-actions{display:flex;gap:8px}
.link-card .btn{font-size:14px;padding:8px 16px}

/* Individual Post/Download Pages */
.post-detail,.download-detail{max-width:800px;margin:0 auto}
.post-detail .meta,.download-detail .meta{color:var(--muted);font-size:14px;margin-bottom:16px;display:flex;align-items:center;gap:12px}
.post-detail .content,.download-detail .content{line-height:1.7;margin-bottom:24px}
.post-detail .content p,.download-detail .content p{margin-bottom:16px}
.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--muted);margin-bottom:20px}
.back-link:hover{color:var(--text)}

/* Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.5);display:none;align-items:center;justify-content:center;z-index:100;padding:16px}
.modal{background:#fff;border:1px solid var(--border);border-radius:16px;max-width:560px;width:100%;padding:20px;max-height:85vh;overflow:auto}
.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;gap:8px}
.modal-title{font-weight:600;margin:0}
.modal-actions{display:flex;align-items:center;gap:8px;margin-top:16px;flex-wrap:wrap}
.modal small{color:var(--muted)}
#qrContainer{display:flex;flex-direction:column;align-items:center;justify-content:center}

/* Admin */
.admin-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.panel{border:1px solid var(--border);border-radius:12px;padding:16px}
.panel h3{margin:0 0 10px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:10px}
.field input,.field textarea,.field select{padding:10px;border:1px solid var(--border);border-radius:10px;font-family:inherit;font-size:14px}
.row{display:flex;gap:10px}
.row > *{flex:1}
.list{display:grid;gap:10px}
.list .item{border:1px solid var(--border);border-radius:10px;padding:10px;display:flex;justify-content:space-between;align-items:center}

/* Loading States */
.loading{text-align:center;padding:40px;color:var(--muted)}
.loading i{font-size:24px;margin-bottom:12px;opacity:0.6}

/* Empty States */
.empty-state{text-align:center;padding:60px 20px;color:var(--muted)}
.empty-state i{font-size:48px;margin-bottom:16px;opacity:0.4}
.empty-state h3{margin:0 0 8px;color:var(--text)}
.empty-state p{margin:0}

/* Responsive */
@media (max-width: 900px){
  .hero{grid-template-columns:1fr;gap:24px;padding:40px 0}
  .hero h1{font-size:32px}
  .grid.cards{grid-template-columns:repeat(2,1fr)}
  .admin-grid{grid-template-columns:1fr;gap:16px}
  .links-grid,.downloads-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px}
  .post-card .card-header{flex-direction:column;align-items:flex-start;gap:8px}
  .post-card .card-meta{text-align:left}
  .download-card .card-actions,.link-card .card-actions{flex-direction:column;align-items:stretch}
  .download-card .card-actions .btn,.link-card .card-actions .btn{justify-content:center}
  .post-detail .meta,.download-detail .meta{flex-direction:column;gap:8px;align-items:flex-start}
}

@media (max-width: 768px){
  .mobile-menu-toggle{display:flex}
  .site-nav{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(255,255,255,0.98);backdrop-filter:blur(10px);flex-direction:column;justify-content:center;gap:24px;transform:translateX(-100%);transition:transform 0.3s ease;z-index:15}
  .site-nav.active{transform:translateX(0)}
  .site-nav a{font-size:18px;padding:16px;text-align:center;border-radius:12px;background:var(--card);width:80%;max-width:300px;margin:0 auto}
  .site-nav a:hover,.site-nav a.active{background:var(--accent);color:#fff}
  .nav-container{position:relative}
  .brand{z-index:20}
  .modal{border-radius:12px;max-width:520px;width:100%;padding:16px;max-height:90vh}
  .modal-actions{flex-direction:column;align-items:stretch}
  .modal-actions .btn{justify-content:center}
}

@media (max-width: 600px){
  .container{padding:0 16px}
  .page{padding:24px 0}
  .hero{padding:32px 0}
  .hero h1{font-size:28px}
  .hero .lead{font-size:16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{justify-content:center}
  .cta-content{flex-direction:column;align-items:flex-start;gap:12px;text-align:center}
  .cta-content .btn{align-self:center}
  .links-grid,.downloads-grid{grid-template-columns:1fr;gap:12px}
  .link-card,.download-card,.post-card{padding:16px}
  .link-card .card-header,.download-card .card-header,.post-card .card-header{gap:8px}
  .link-card .card-icon,.download-card .card-icon{width:32px;height:32px;font-size:16px}
  .post-detail,.download-detail{padding:0 16px}
  .admin-grid .panel{padding:12px}
  .admin-grid .field input,.admin-grid .field textarea,.admin-grid .field select{font-size:16px}
  .admin-grid .row{flex-direction:column;gap:8px}
  .admin-grid .list .item{flex-direction:column;gap:8px;align-items:flex-start}
  .admin-grid .list .item .row{flex-direction:row;justify-content:flex-end}
}

@media (max-width: 520px){
  .nav-container{height:auto;padding:12px 0;gap:8px;flex-wrap:wrap}
  .site-nav a{font-size:16px;padding:12px;width:90%}
  .grid.cards{grid-template-columns:1fr;gap:12px}
  .brand-text{font-size:14px}
  .hero-art{display:none}
  .footer-container{flex-direction:column;gap:12px;height:auto;padding:16px 0}
  .socials{justify-content:center}
  .empty-state{padding:40px 16px}
  .empty-state i{font-size:36px}
  .loading{padding:32px 16px}
  .loading i{font-size:20px}
}