/* AI Tool Harbor - dark modern theme */
:root{
  --bg:#0a0e1a; --bg2:#0d1220; --card:#131a2e; --card2:#182140;
  --line:#232e4d; --txt:#e8ecf8; --mut:#94a0c0; --dim:#6b7699;
  --grad:linear-gradient(120deg,#6366f1,#a855f7 55%,#22d3ee);
  --brand:#818cf8; --brand2:#a855f7; --cyan:#22d3ee;
  --radius:14px; --shadow:0 10px 34px rgba(3,7,25,.45);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--txt);font-family:"Inter","SF Pro Text",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.container{max-width:1140px;margin:0 auto;padding:0 22px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(10,14,26,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:62px}
.logo{font-weight:800;font-size:18px;letter-spacing:-.2px}
.links a{color:var(--mut);margin-left:22px;font-size:14.5px;font-weight:500;transition:color .2s}
.links a:hover,.links a.on{color:var(--txt)}

/* hero */
.hero{position:relative;padding:88px 0 64px;text-align:center;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-40% -20% auto;height:520px;background:
  radial-gradient(600px 300px at 20% 30%,rgba(99,102,241,.22),transparent),
  radial-gradient(560px 280px at 80% 40%,rgba(168,85,247,.18),transparent),
  radial-gradient(480px 240px at 50% 70%,rgba(34,211,238,.10),transparent);
  pointer-events:none}
.hero h1{font-size:clamp(32px,5.4vw,56px);line-height:1.14;font-weight:800;letter-spacing:-1px;position:relative}
.hero-sub{max-width:640px;margin:20px auto 30px;color:var(--mut);font-size:17px;position:relative}
.hero-cta{display:flex;gap:14px;justify-content:center;position:relative;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 26px;border-radius:999px;font-weight:600;font-size:15px;transition:transform .18s,box-shadow .2s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 26px rgba(129,140,248,.35)}
.btn-ghost{border:1px solid var(--line);color:var(--txt);background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:var(--brand);box-shadow:0 6px 20px rgba(99,102,241,.18)}
.hero-stats{display:flex;gap:44px;justify-content:center;margin-top:44px;position:relative;flex-wrap:wrap}
.hero-stats b{display:block;font-size:30px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats span{color:var(--dim);font-size:13px}

/* sections */
.section{padding:64px 0}
.section.alt{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{margin-bottom:30px}
.sec-head h2{font-size:28px;font-weight:800;letter-spacing:-.4px}
.sec-head p{color:var(--mut);margin-top:6px}

/* category cards */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(248px,1fr));gap:16px}
.cat-card{--a:var(--brand);background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;display:flex;flex-direction:column;gap:8px;transition:transform .18s,border-color .2s,box-shadow .2s}
.cat-card:hover{transform:translateY(-4px);border-color:var(--a);box-shadow:var(--shadow)}
.cat-head{display:flex;justify-content:space-between;align-items:center}
.cat-icon{font-size:20px;color:var(--a)}
.cat-n{font-size:12px;color:var(--dim);background:var(--bg2);padding:3px 10px;border-radius:999px;border:1px solid var(--line)}
.cat-card h3{font-size:16.5px;font-weight:700}
.cat-card p{font-size:13.5px;color:var(--mut);flex:1}
.cat-link{color:var(--a);font-size:13.5px;font-weight:600}

/* tool cards */
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.tool-grid.sm{grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}
.tool-card{--a:var(--brand);background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;display:flex;flex-direction:column;gap:10px;transition:transform .18s,border-color .2s,box-shadow .2s}
.tool-card:hover{transform:translateY(-4px);border-color:var(--a);box-shadow:var(--shadow)}
.tool-card h3{font-size:17px;font-weight:700}
.tool-card p{font-size:13.5px;color:var(--mut);flex:1}
.tc-top{display:flex;justify-content:space-between;align-items:center;gap:8px}
.badge{font-size:11px;font-weight:700;padding:3px 10px;border-radius:999px;letter-spacing:.3px}
.tc-price{font-size:12px;color:var(--dim)}
.tc-bottom{display:flex;justify-content:space-between;align-items:center}
.stars{color:#fbbf24;font-size:13px;letter-spacing:1px}
.tc-rate{font-weight:700;color:var(--txt);font-size:13px}

/* page head (category / tool) */
.page-head{--a:var(--brand);padding:46px 0 34px;background:linear-gradient(180deg,rgba(129,140,248,.07),transparent 70%);border-bottom:1px solid var(--line)}
.crumb{color:var(--dim);font-size:13px;margin-bottom:14px}
.crumb a{color:var(--mut)}
.crumb a:hover{color:var(--txt)}
.page-head h1{font-size:clamp(28px,4vw,42px);font-weight:800;letter-spacing:-.6px}
.page-head>div>p:last-child{color:var(--mut);margin-top:8px;font-size:16px}
.pill{font-size:12px;font-weight:700;padding:3px 12px;border-radius:999px;margin-left:6px;vertical-align:2px}

/* tool detail */
.tool-hero{display:grid;grid-template-columns:1fr 300px;gap:36px;align-items:end;margin-top:18px}
.tool-hero-info h1{font-size:clamp(30px,4.4vw,46px)}
.tag{color:var(--mut);font-size:17px;margin:8px 0 14px}
.tool-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.stars.big{font-size:17px}
.score{font-weight:700;color:var(--txt)}
.tool-actions{margin-top:22px}
.tool-facts{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.tool-facts div{display:flex;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--line);font-size:13.5px}
.tool-facts div:last-child{border-bottom:none}
.tool-facts span{color:var(--dim)}
.tool-facts b{font-weight:600;text-align:right}

/* two col layout */
.two-col{display:grid;grid-template-columns:1fr 330px;gap:44px;align-items:start}
.main h2{font-size:24px;font-weight:800;margin:26px 0 10px;letter-spacing:-.3px}
.main h2:first-child{margin-top:0}
.main h3{font-size:17px;font-weight:700;margin:20px 0 8px}
.lead{font-size:16.5px;color:var(--txt)}
.pros{list-style:none;display:flex;flex-direction:column;gap:8px;margin:6px 0 8px}
.pros li{padding-left:26px;position:relative;color:var(--mut)}
.pros li::before{content:"✓";position:absolute;left:2px;color:var(--cyan);font-weight:800}
.aff-note{background:var(--card2);border:1px solid var(--line);border-left:3px solid #fbbf24;border-radius:10px;padding:14px 16px;font-size:13.5px;color:var(--mut);margin:22px 0}
.side h3{font-size:15px;margin-bottom:12px;color:var(--mut);text-transform:uppercase;letter-spacing:1px}
.side-grid{display:grid;grid-template-columns:1fr;gap:12px}
.side .tool-card{padding:14px}

/* guide cards + article pages */
.guide-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}
.guide-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;display:flex;flex-direction:column;gap:8px;transition:transform .18s,border-color .2s,box-shadow .2s}
.guide-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow)}
.guide-date{font-size:12px;color:var(--dim)}
.guide-card h3{font-size:17px;font-weight:700;line-height:1.35}
.guide-card p{font-size:13.5px;color:var(--mut);flex:1}
.article-wrap{max-width:820px}
.article-wrap .lead{font-size:17.5px;color:var(--txt);margin-bottom:8px}
.article-wrap h2{font-size:22px;font-weight:800;margin:34px 0 10px;letter-spacing:-.3px}
.article-wrap h2:first-of-type{margin-top:18px}
.article-wrap p{color:var(--mut);margin-bottom:14px}
.article-wrap .tool-grid{margin:6px 0 22px}
.conclusion{background:var(--card2);border:1px solid var(--line);border-left:3px solid var(--brand);border-radius:12px;padding:22px 24px;margin:26px 0}

/* footer */
.footer{border-top:1px solid var(--line);background:var(--bg2);padding:48px 0 26px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:34px;margin-bottom:26px}
.foot-grid h4{font-size:13px;text-transform:uppercase;letter-spacing:1px;color:var(--dim);margin-bottom:12px}
.foot-grid a{display:block;color:var(--mut);font-size:14px;margin-bottom:8px}
.foot-grid a:hover{color:var(--txt)}
.foot-grid p{color:var(--mut);font-size:14px;margin-top:10px}
.copy{color:var(--dim);font-size:12.5px;border-top:1px solid var(--line);padding-top:18px}

@media(max-width:880px){
  .tool-hero,.two-col{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .hero{padding:64px 0 48px}
  .section{padding:48px 0}
}