:root{
  --accent:#4F46E5;
  --accent-2:#10B981;
  --amber:#F59E0B;
  --bg:#FAFAF8;
  --bg-raised:#FFFFFF;
  --text:#1A1A1A;
  --text-dim:#5B5B58;
  --border:#E7E5E0;
  --radius:14px;
  --maxw:1180px;
}
[data-theme="dark"]{
  --bg:#0E0F11;
  --bg-raised:#17181B;
  --text:#EDEDED;
  --text-dim:#9A9A96;
  --border:#28292D;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'Inter',system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;
  transition:background .25s ease, color .25s ease;
}
h1,h2,h3,.display{
  font-family:'Space Grotesk',sans-serif;
  letter-spacing:-0.01em;
  line-height:1.15;
}
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 24px; }

/* NAV */
.nav{
  position:sticky; top:0; z-index:50;
  background:color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.nav-inner{ max-width:var(--maxw); margin:0 auto; padding:14px 24px; display:flex; align-items:center; gap:32px; }
.logo{ display:flex; align-items:center; gap:10px; font-family:'Space Grotesk'; font-weight:700; font-size:19px; }
.logo img{ width:36px; height:36px; flex-shrink:0; object-fit:cover; border-radius:9px; }
.nav-links{ display:flex; gap:26px; font-size:14.5px; font-weight:500; flex:1; }
.nav-links a{ color:var(--text-dim); }
.nav-links a.current, .nav-links a:hover{ color:var(--text); }
.nav-right{ display:flex; align-items:center; gap:14px; }
.search-pill{
  display:flex; align-items:center; gap:8px;
  border:1px solid var(--border); border-radius:999px;
  padding:8px 14px; font-size:13.5px; color:var(--text-dim);
  background:var(--bg-raised);
}
.theme-toggle{
  width:38px; height:38px; border-radius:50%;
  border:1px solid var(--border); background:var(--bg-raised);
  display:flex; align-items:center; justify-content:center; cursor:pointer;
}
.theme-toggle svg{ width:17px; height:17px; }
@media (max-width: 760px){ .nav-links{ display:none; } }

/* BUTTONS / BADGES */
.btn{ display:inline-flex; align-items:center; gap:8px; padding:12px 22px; border-radius:10px; font-weight:600; font-size:14.5px; cursor:pointer; border:none; }
.btn-primary{ background:var(--accent); color:#fff; }
.badge{ display:inline-block; font-size:11.5px; font-weight:700; text-transform:uppercase; letter-spacing:.04em; padding:4px 10px; border-radius:6px; }
.badge-guide{ background:color-mix(in srgb, var(--accent) 14%, transparent); color:var(--accent); }
.badge-comparison{ background:color-mix(in srgb, var(--accent-2) 16%, transparent); color:#0a7a56; }
[data-theme="dark"] .badge-comparison{ color:var(--accent-2); }
.badge-news{ background:color-mix(in srgb, var(--amber) 18%, transparent); color:#92620a; }
[data-theme="dark"] .badge-news{ color:var(--amber); }

/* HERO */
.hero{ padding:76px 0 56px; border-bottom:1px solid var(--border); }
.hero h1{ font-size:clamp(34px,5vw,54px); max-width:780px; margin:0 0 18px; }
.hero p{ color:var(--text-dim); font-size:18px; max-width:560px; margin:0 0 32px; }
.hero-search{ display:flex; gap:10px; max-width:520px; border:1px solid var(--border); border-radius:12px; padding:6px; background:var(--bg-raised); }
.hero-search input{ flex:1; border:none; background:transparent; padding:10px 12px; font-size:15px; color:var(--text); font-family:'Inter'; }
.hero-search input:focus{ outline:none; }

/* SECTIONS */
.section{ padding:52px 0; }
.section-head{ display:flex; align-items:baseline; justify-content:space-between; margin-bottom:26px; gap:16px; }
.section-head h2{ font-size:24px; margin:0; }
.section-head .see-all{ font-size:13.5px; font-weight:600; color:var(--accent); white-space:nowrap; }

/* CATEGORY CARDS */
.cat-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
@media (max-width:900px){ .cat-grid{ grid-template-columns:repeat(2,1fr);} }
@media (max-width:560px){ .cat-grid{ grid-template-columns:1fr;} }
.cat-card{ border:1px solid var(--border); border-radius:var(--radius); padding:22px; background:var(--bg-raised); transition:border-color .2s, transform .2s; display:block; }
.cat-card:hover{ border-color:var(--accent); transform:translateY(-2px); }
.cat-icon{ width:42px; height:42px; border-radius:10px; display:flex; align-items:center; justify-content:center; background:color-mix(in srgb, var(--accent) 12%, transparent); margin-bottom:14px; }
.cat-icon svg{ width:20px; height:20px; color:var(--accent); }
.cat-card h3{ font-size:16.5px; margin:0 0 6px; }
.cat-card p{ font-size:13.5px; color:var(--text-dim); margin:0; line-height:1.5; }

/* ARTICLE CARDS */
.article-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
@media (max-width:900px){ .article-grid{ grid-template-columns:repeat(2,1fr);} }
@media (max-width:640px){ .article-grid{ grid-template-columns:1fr;} }
.article-card{ display:block; }
.article-thumb{ aspect-ratio:16/9; border-radius:12px; margin-bottom:14px; background:linear-gradient(135deg, color-mix(in srgb, var(--accent) 20%, var(--bg-raised)), color-mix(in srgb, var(--accent-2) 16%, var(--bg-raised))); display:flex; flex-direction:column; align-items:center; justify-content:center; gap:8px; overflow:hidden; }
.article-thumb svg{ width:22px; height:22px; color:var(--text-dim); opacity:.5; }
.article-thumb span{ font-family:'Space Grotesk'; font-weight:600; font-size:12.5px; color:var(--text-dim); opacity:.6; text-align:center; padding:0 16px; }
.article-card h3{ font-size:16.5px; margin:10px 0 8px; line-height:1.35; }
.article-meta{ display:flex; gap:10px; align-items:center; font-size:12.5px; color:var(--text-dim); }
.article-meta .dot::before{ content:"·"; margin:0 2px; }

/* NEWSLETTER */
.newsletter{ border:1px solid var(--border); border-radius:var(--radius); padding:36px; display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap; background:var(--bg-raised); }
.newsletter h3{ font-size:20px; margin:0 0 6px; }
.newsletter p{ color:var(--text-dim); font-size:14px; margin:0; }
.newsletter form{ display:flex; gap:10px; }
.newsletter input{ border:1px solid var(--border); border-radius:10px; padding:11px 14px; font-size:14px; background:var(--bg); color:var(--text); font-family:'Inter'; min-width:220px; }

/* FOOTER */
footer{ border-top:1px solid var(--border); padding:48px 0 32px; margin-top:24px; }
.footer-grid{ display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:32px; margin-bottom:36px; }
@media (max-width:700px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
footer h4{ font-size:12.5px; text-transform:uppercase; letter-spacing:.05em; color:var(--text-dim); margin:0 0 14px; }
footer ul{ list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:9px; }
footer a{ font-size:14px; color:var(--text-dim); }
footer a:hover{ color:var(--text); }
.footer-bottom{ font-size:13px; color:var(--text-dim); border-top:1px solid var(--border); padding-top:22px; }

/* AD SLOT */
.ad-slot{ border:1px dashed var(--border); border-radius:10px; padding:14px; text-align:center; font-size:11.5px; color:var(--text-dim); text-transform:uppercase; letter-spacing:.06em; margin:36px 0; }

/* BREADCRUMBS */
.breadcrumbs{ font-size:13px; color:var(--text-dim); padding:20px 0 0; }
.breadcrumbs a:hover{ color:var(--accent); }

/* CATEGORY / LISTING PAGES */
.cat-header{ padding:20px 0 40px; border-bottom:1px solid var(--border); }
.cat-header h1{ font-size:clamp(28px,4vw,40px); margin:8px 0 12px; }
.cat-header p{ color:var(--text-dim); font-size:16px; max-width:640px; margin:0; }
.cat-list{ display:flex; flex-direction:column; gap:0; }
.cat-list-item{ display:flex; gap:20px; padding:26px 0; border-bottom:1px solid var(--border); }
.cat-list-thumb{ width:160px; aspect-ratio:16/10; border-radius:10px; flex-shrink:0; background:linear-gradient(135deg, color-mix(in srgb, var(--accent) 18%, var(--bg-raised)), color-mix(in srgb, var(--accent-2) 14%, var(--bg-raised))); display:flex; align-items:center; justify-content:center; overflow:hidden; }
.cat-list-thumb svg{ width:16px; height:16px; color:var(--text-dim); opacity:.5; }
@media (max-width:600px){ .cat-list-thumb{ width:100px; } }
.cat-list-item h3{ font-size:18px; margin:2px 0 8px; }
.cat-list-item p{ font-size:14px; color:var(--text-dim); margin:0 0 10px; line-height:1.5; }

/* ARTICLE PAGE */
.article-layout{ display:grid; grid-template-columns:220px 1fr; gap:48px; padding:32px 0 80px; }
@media (max-width:900px){ .article-layout{ grid-template-columns:1fr; } }
.toc{ position:sticky; top:90px; align-self:start; font-size:13.5px; }
.toc h4{ font-size:11.5px; text-transform:uppercase; letter-spacing:.05em; color:var(--text-dim); margin:0 0 14px; }
.toc a{ display:block; padding:7px 0; color:var(--text-dim); border-left:2px solid var(--border); padding-left:12px; }
.toc a:hover{ color:var(--accent); border-color:var(--accent); }
@media (max-width:900px){ .toc{ display:none; } }
.article-body{ max-width:680px; }
.article-body .art-meta{ display:flex; align-items:center; gap:12px; font-size:13px; color:var(--text-dim); margin-bottom:18px; }
.author-chip{ display:flex; align-items:center; gap:8px; }
.avatar{ width:24px; height:24px; border-radius:50%; background:var(--accent); flex-shrink:0; display:inline-block; }
.article-body h1{ font-size:clamp(28px,4vw,38px); margin:6px 0 22px; }
.art-hero-img{ aspect-ratio:16/9; border-radius:14px; margin:0 0 32px; background:linear-gradient(135deg, color-mix(in srgb, var(--accent) 22%, var(--bg-raised)), color-mix(in srgb, var(--accent-2) 18%, var(--bg-raised))); display:flex; flex-direction:column; align-items:center; justify-content:center; gap:10px; overflow:hidden; }
.art-hero-img svg{ width:30px; height:30px; color:var(--text-dim); opacity:.5; }
.art-hero-img span{ font-family:'Space Grotesk'; font-weight:600; font-size:13px; color:var(--text-dim); opacity:.6; }

/* ARTICLE PHOTOGRAPHY */
.article-thumb,
.cat-list-thumb,
.art-hero-img.has-photo{
  background-image:linear-gradient(180deg, transparent 62%, rgba(14,15,17,.16)), var(--article-image);
  background-position:center, var(--image-position, center);
  background-repeat:no-repeat;
  background-size:cover;
}
.article-thumb > svg,
.article-thumb > span,
.cat-list-thumb > svg,
.cat-list-thumb > span,
.art-hero-img.has-photo > svg,
.art-hero-img.has-photo > span{ display:none; }
a[href*="ai-lesson-planning-guide"] :is(.article-thumb,.cat-list-thumb),
.art-hero-img.lesson-planning-photo{
  --article-image:url('/assets/articles/ai-lesson-planning.webp');
  --image-position:center 42%;
}
a[href*="magicschool-vs-eduaide"] :is(.article-thumb,.cat-list-thumb),
.art-hero-img.comparison-photo{
  --article-image:url('/assets/articles/ai-tool-comparison.webp');
  --image-position:center 48%;
}
a[href*="is-it-ethical-for-teachers-to-use-ai"] :is(.article-thumb,.cat-list-thumb),
.art-hero-img.ethics-photo{
  --article-image:url('/assets/articles/ethical-ai-for-teachers.webp');
  --image-position:center 50%;
}
a[href*="free-ai-tools-for-teachers"] :is(.article-thumb,.cat-list-thumb),
.art-hero-img.free-tools-photo{
  --article-image:url('/assets/articles/free-ai-tools.webp');
  --image-position:center 44%;
}
.takeaways{ border:1px solid var(--border); border-left:3px solid var(--accent); border-radius:10px; padding:20px 22px; margin:0 0 36px; background:var(--bg-raised); }
.takeaways h4{ font-size:13px; text-transform:uppercase; letter-spacing:.04em; margin:0 0 12px; color:var(--accent); }
.takeaways ul{ margin:0; padding-left:18px; font-size:15px; line-height:1.7; }
.article-body p{ font-size:17px; line-height:1.68; color:var(--text); margin:0 0 22px; }
.article-body h2{ font-size:23px; margin:44px 0 16px; scroll-margin-top:90px; }
.article-body h3{ font-size:18px; margin:28px 0 12px; scroll-margin-top:90px; }
.compare-table{ width:100%; border-collapse:collapse; margin:24px 0; font-size:14.5px; }
.compare-table th, .compare-table td{ border:1px solid var(--border); padding:12px 14px; text-align:left; }
.compare-table th{ background:var(--bg-raised); font-family:'Space Grotesk'; font-weight:600; }
.callout{ background:color-mix(in srgb, var(--amber) 10%, transparent); border:1px solid color-mix(in srgb, var(--amber) 35%, transparent); border-radius:10px; padding:16px 18px; font-size:14.5px; margin:24px 0; }
.callout strong{ color:var(--amber); }
.faq-item{ border-bottom:1px solid var(--border); padding:18px 0; }
.faq-item h3{ font-size:16px; margin:0 0 8px; }
.faq-item p{ font-size:15px; color:var(--text-dim); margin:0; }
.cta-box{ background:var(--accent); color:#fff; border-radius:14px; padding:32px; text-align:center; margin:44px 0; }
.cta-box h3{ margin:0 0 8px; font-size:20px; }
.cta-box p{ opacity:.85; margin:0 0 20px; font-size:14.5px; }
.cta-box .btn-primary{ background:#fff; color:var(--accent); }
.author-box{ display:flex; gap:16px; border-top:1px solid var(--border); padding-top:28px; margin-top:12px; }
.author-box .avatar{ width:48px; height:48px; }
.author-box h4{ font-size:15px; margin:0 0 4px; }
.author-box p{ font-size:13.5px; color:var(--text-dim); margin:0; }

/* PROSE (legal / about pages) */
.prose{ max-width:680px; margin:0 auto; padding:48px 24px 80px; }
.prose h1{ font-size:32px; margin-bottom:20px; }
.prose h2{ font-size:20px; margin-top:32px; margin-bottom:12px; }
.prose p{ font-size:16px; line-height:1.7; color:var(--text); margin:0 0 16px; }

/* SEARCH */
.search-note{ color:var(--text-dim); font-size:13.5px; margin-top:14px; }