/* AI Income Lab — premium blog theme (light/dark) */
:root{
  --bg:#ffffff; --bg2:#f7f7f5; --fg:#16161a; --muted:#5c5c66;
  --line:#e8e6e0; --accent:#0a7c4d; --accent2:#ff5d3a; --card:#ffffff;
  --hero1:#0d1b12; --hero2:#143c26; --code:#f2f2f0;
  --serif:"Playfair Display", Georgia, "Times New Roman", serif;
  --sans:Inter, -apple-system, "Segoe UI", Roboto, sans-serif;
}
[data-theme="dark"]{
  --bg:#0e0f12; --bg2:#14161b; --fg:#e8e9ed; --muted:#9a9aa5;
  --line:#26282f; --card:#17191f; --hero1:#060a08; --hero2:#0f2418; --code:#1c1e25;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--fg);font-family:var(--sans);line-height:1.65;font-size:16.5px;-webkit-font-smoothing:antialiased;transition:background .25s,color .25s}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
.container{max-width:1080px;margin:0 auto;padding:0 22px}
/* header */
header{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(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:62px}
.logo{font-family:var(--serif);font-size:21px;font-weight:800;color:var(--fg);letter-spacing:-.3px}
.logo em{font-style:normal;color:var(--accent)}
.nav-links{display:flex;gap:22px;align-items:center}
.nav-links a{color:var(--muted);font-size:14.5px;font-weight:600}
.nav-links a:hover{color:var(--fg)}
#themeToggle{background:var(--bg2);border:1px solid var(--line);color:var(--fg);border-radius:99px;padding:5px 12px;cursor:pointer;font-size:14px}
/* hero */
.hero{background:linear-gradient(135deg,var(--hero1),var(--hero2));color:#f4f7f5;padding:64px 0 56px;border-radius:0 0 28px 28px;margin:0 0 40px}
.hero h1{font-family:var(--serif);font-size:clamp(30px,5vw,50px);line-height:1.12;font-weight:800;letter-spacing:-1px;max-width:760px}
.hero h1 span{color:#59d99a;background:linear-gradient(90deg,#59d99a,#ffb36b);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p{color:#c9d6cf;max-width:620px;margin:16px 0 26px;font-size:17px}
.hero-badge{display:inline-block;background:rgba(89,217,154,.14);border:1px solid rgba(89,217,154,.35);color:#59d99a;font-size:12.5px;font-weight:700;letter-spacing:.8px;text-transform:uppercase;padding:6px 14px;border-radius:99px;margin-bottom:18px}
.hero .cta{display:inline-flex;gap:10px;background:var(--accent);color:#fff;padding:12px 24px;border-radius:12px;font-weight:700;font-size:15px}
.hero .cta:hover{text-decoration:none;filter:brightness(1.1)}
.hero-stats{display:flex;gap:34px;margin-top:34px;flex-wrap:wrap}
.hero-stats b{font-family:var(--serif);font-size:22px;display:block;color:#fff}
.hero-stats span{font-size:12.5px;color:#9db8a9}
/* sections */
section{margin-bottom:46px}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:20px}
.sec-head h2{font-family:var(--serif);font-size:27px;letter-spacing:-.5px}
.sec-head a{font-size:13.5px;font-weight:700}
/* featured */
.featured{display:grid;grid-template-columns:1.35fr 1fr;gap:22px}
.fcard{background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:transform .2s,box-shadow .2s;position:relative}
.fcard:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(0,0,0,.08)}
.fthumb{height:190px;display:flex;align-items:center;justify-content:center;font-size:56px;background:linear-gradient(135deg,var(--bg2),var(--line))}
.fbig .fthumb{height:250px;font-size:84px}
.fbody{padding:18px 20px 22px}
.chip{display:inline-block;font-size:11.5px;font-weight:800;letter-spacing:.7px;text-transform:uppercase;padding:4px 10px;border-radius:6px;margin-bottom:10px}
.chip.green{background:#e6f6ee;color:#0a7c4d}
.chip.orange{background:#ffefe9;color:#d0401f}
.chip.blue{background:#e8f0fe;color:#1a56db}
.chip.purple{background:#f3e9ff;color:#7a3ce8}
[data-theme="dark"] .chip.green{background:#0f2b1e;color:#59d99a}
[data-theme="dark"] .chip.orange{background:#33190f;color:#ff9d7e}
[data-theme="dark"] .chip.blue{background:#101f38;color:#8ab4ff}
[data-theme="dark"] .chip.purple{background:#251239;color:#c79bff}
.fbody h3{font-family:var(--serif);font-size:21px;line-height:1.3;margin-bottom:8px}
.fbody h3 a{color:var(--fg)}
.fbody h3 a:hover{color:var(--accent);text-decoration:none}
.fbody p{color:var(--muted);font-size:14.5px;margin-bottom:12px}
.meta{font-size:12.5px;color:var(--muted);display:flex;gap:12px;flex-wrap:wrap}
/* grid */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:860px){.grid{grid-template-columns:1fr 1fr}.featured{grid-template-columns:1fr}}
@media(max-width:560px){.grid{grid-template-columns:1fr}}
/* topics strip */
.topics{display:flex;gap:10px;flex-wrap:wrap}
.topic{background:var(--bg2);border:1px solid var(--line);border-radius:99px;padding:9px 18px;font-size:13.5px;font-weight:600;color:var(--fg)}
.topic:hover{background:var(--accent);color:#fff;text-decoration:none;border-color:var(--accent)}
/* newsletter */
.newsletter{background:var(--bg2);border:1px solid var(--line);border-radius:20px;padding:34px;text-align:center}
.newsletter h2{font-family:var(--serif);font-size:26px;margin-bottom:8px}
.newsletter p{color:var(--muted);font-size:14.5px;max-width:480px;margin:0 auto 18px}
.newsletter form{display:flex;gap:10px;max-width:440px;margin:0 auto}
.newsletter input{flex:1;padding:12px 16px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--fg);font-size:14.5px}
.newsletter button{background:var(--accent);color:#fff;border:0;padding:12px 22px;border-radius:10px;font-weight:700;cursor:pointer;font-size:14.5px}
/* footer */
footer{border-top:1px solid var(--line);padding:36px 0 28px;margin-top:50px}
.foot{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:13.5px;color:var(--muted)}
.foot a{color:var(--muted)}
.foot .disc{margin-top:18px;font-size:12px;color:var(--muted);max-width:820px;line-height:1.5}
/* ===== ARTICLE PAGES ===== */
article.post{max-width:740px;margin:0 auto;padding:44px 0 20px}
.post .chip{margin-bottom:14px}
.post h1{font-family:var(--serif);font-size:clamp(28px,4.4vw,42px);line-height:1.15;letter-spacing:-.8px;margin-bottom:16px}
.post .meta{font-size:13.5px;margin-bottom:26px}
.post .cover{height:240px;border-radius:18px;display:flex;align-items:center;justify-content:center;font-size:96px;background:linear-gradient(135deg,var(--bg2),var(--line));margin-bottom:30px}
.post h2{font-family:var(--serif);font-size:25px;margin:36px 0 12px;letter-spacing:-.3px}
.post h3{font-family:var(--serif);font-size:19.5px;margin:26px 0 10px}
.post p{margin-bottom:16px;color:var(--fg)}
.post ul,.post ol{margin:0 0 18px 22px}
.post li{margin-bottom:8px}
.post blockquote{border-left:4px solid var(--accent);background:var(--bg2);padding:16px 20px;border-radius:0 12px 12px 0;margin:20px 0;font-family:var(--serif);font-size:18px}
.post code{background:var(--code);padding:2px 7px;border-radius:6px;font-size:14px}
.post table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px}
.post th,.post td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.post th{background:var(--bg2)}
.toc{background:var(--bg2);border:1px solid var(--line);border-radius:14px;padding:18px 22px;margin:22px 0;font-size:14.5px}
.toc b{display:block;margin-bottom:8px}
.toc a{display:block;padding:3px 0;color:var(--muted)}
.toc a:hover{color:var(--accent)}
.cta-box{background:linear-gradient(135deg,var(--hero1),var(--hero2));color:#fff;border-radius:18px;padding:26px 28px;margin:32px 0;text-align:center}
.cta-box h3{font-family:var(--serif);font-size:21px;margin-bottom:8px}
.cta-box p{color:#c9d6cf;font-size:14px;margin-bottom:14px}
.cta-box a{background:var(--accent);color:#fff;padding:11px 22px;border-radius:10px;font-weight:700;font-size:14px;display:inline-block}
.author{display:flex;gap:14px;align-items:center;background:var(--bg2);border:1px solid var(--line);border-radius:16px;padding:18px;margin:30px 0}
.author .av{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:20px;flex-shrink:0}
.author b{display:block}
.author p{font-size:13.5px;color:var(--muted);margin:2px 0 0}
.related{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:14px}
@media(max-width:640px){.related{grid-template-columns:1fr}}
/* simple pages (about/privacy/contact) */
.simple{max-width:760px;margin:0 auto;padding:48px 0 20px}
.simple h1{font-family:var(--serif);font-size:36px;margin-bottom:18px}
.simple h2{font-family:var(--serif);font-size:22px;margin:26px 0 10px}
.simple p,.simple li{margin-bottom:12px;color:var(--muted)}
/* ad slot placeholder (activate after AdSense approval) */
.adslot{min-height:110px;background:var(--bg2);border:1px dashed var(--line);border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:12.5px;margin:26px 0}