/* ============================================================
   AURORA — Design System
   Concept by Xkaii Studio (Harrison Songolo)
   One coherent visual language across the whole site.
   ============================================================ */

/* ---- Tokens ---- */
:root{
  /* color */
  --bg:#0B0B12;
  --bg-2:#0E0E18;
  --surface:#14141F;
  --surface-2:#1C1C2B;
  --border:rgba(255,255,255,.08);
  --border-2:rgba(255,255,255,.14);
  --txt:#F4F3FB;
  --txt-mut:#A5A3C0;
  --txt-dim:#6E6C89;
  --violet:#8B7BFF;
  --violet-deep:#6A54F0;
  --cyan:#4FE1E6;
  --magenta:#C77BFF;
  --pos:#57E7A5;
  --grad:linear-gradient(135deg,var(--violet),var(--cyan));
  --grad-soft:linear-gradient(135deg,rgba(139,123,255,.16),rgba(79,225,230,.12));

  /* type */
  --font:"Inter",-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;

  /* spacing scale */
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px;
  --s7:48px; --s8:64px; --s9:96px; --s10:128px;

  /* radius */
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:24px; --r-pill:100px;

  /* elevation */
  --shadow:0 20px 60px rgba(0,0,0,.5);
  --shadow-lg:0 40px 100px rgba(0,0,0,.6);
  --glow:0 0 80px rgba(139,123,255,.35);

  /* layout */
  --maxw:1200px;
  --nav-h:72px;
}

/* ---- Reset ---- */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--txt);font-family:var(--font);
  line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}

/* ---- Layout helpers ---- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}
.section{padding:var(--s9) 0}
.section-sm{padding:var(--s8) 0}
.center{text-align:center}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--violet);margin-bottom:var(--s4);
}

/* ---- Type ---- */
h1,h2,h3{letter-spacing:-.02em;line-height:1.06}
.display{font-size:clamp(44px,6vw,72px);font-weight:800;letter-spacing:-.03em;line-height:1.02}
h1{font-size:clamp(40px,5vw,56px);font-weight:800}
h2{font-size:clamp(32px,3.6vw,40px);font-weight:800}
h3{font-size:22px;font-weight:700;line-height:1.2}
.lead{font-size:clamp(18px,2vw,20px);color:var(--txt-mut);line-height:1.55}
.muted{color:var(--txt-mut)}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

.section-head{max-width:640px;margin:0 auto var(--s7)}
.section-head.left{margin-left:0;text-align:left}
.section-head p{margin-top:var(--s4)}

/* ---- Buttons ---- */
.btn{
  display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:15px;
  padding:13px 24px;border-radius:var(--r-pill);cursor:pointer;border:none;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease;white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--grad);color:#0B0B12;box-shadow:0 10px 30px rgba(106,84,240,.35)}
.btn-primary:hover{box-shadow:0 14px 40px rgba(106,84,240,.5)}
.btn-ghost{background:rgba(255,255,255,.04);color:var(--txt);border:1px solid var(--border-2)}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--violet)}
.btn-text{background:none;padding:13px 6px;color:var(--txt)}
.btn-text:hover{color:var(--violet)}
.btn-lg{padding:16px 30px;font-size:16px}

/* ---- Nav ---- */
.nav{
  position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:50;
  display:flex;align-items:center;transition:background .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.nav.scrolled{background:rgba(11,11,18,.72);backdrop-filter:blur(14px);border-bottom-color:var(--border)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;width:100%}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.01em}
.logo .mark{width:26px;height:26px;border-radius:8px;background:var(--grad);box-shadow:var(--glow)}
.nav-links{display:flex;gap:30px;font-size:15px;color:var(--txt-mut);font-weight:500}
.nav-links a{transition:color .15s}
.nav-links a:hover,.nav-links a.active{color:var(--txt)}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-burger{display:none}

/* ---- Hero / aurora mesh ---- */
.hero{position:relative;padding:calc(var(--nav-h) + 90px) 0 var(--s9);overflow:hidden}
.mesh{position:absolute;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.orb{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;animation:drift 16s ease-in-out infinite}
.orb.v{width:640px;height:640px;background:radial-gradient(circle,var(--violet),transparent 65%);top:-220px;left:-140px}
.orb.c{width:560px;height:560px;background:radial-gradient(circle,var(--cyan),transparent 65%);top:-120px;right:-120px;animation-delay:-5s}
.orb.m{width:520px;height:520px;background:radial-gradient(circle,var(--magenta),transparent 65%);top:180px;left:38%;animation-delay:-9s;opacity:.35}
@keyframes drift{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(60px,40px) scale(1.1)}66%{transform:translate(-40px,30px) scale(.94)}}
.hero .wrap{position:relative;z-index:2}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;font-size:13px;color:var(--txt-mut);
  background:rgba(255,255,255,.04);border:1px solid var(--border);padding:7px 15px;border-radius:var(--r-pill);margin-bottom:var(--s5);
}
.hero-badge b{color:var(--cyan)}
.hero-cta{display:flex;gap:14px;justify-content:center;margin-top:var(--s6);flex-wrap:wrap}
.hero.left .section-head,.hero.left{}

/* ---- Assistant mockup (signature component) ---- */
.assistant{
  max-width:820px;margin:var(--s8) auto 0;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--r-xl);box-shadow:var(--shadow-lg);overflow:hidden;
}
.assistant .abar{display:flex;align-items:center;gap:9px;padding:14px 18px;border-bottom:1px solid var(--border);background:var(--surface-2)}
.assistant .abar .d{width:11px;height:11px;border-radius:50%}
.d.r{background:#ff5f57}.d.y{background:#febc2e}.d.g{background:#28c840}
.assistant .abar .t{margin-left:12px;font-size:13px;color:var(--txt-dim)}
.achat{padding:26px 26px 22px;display:flex;flex-direction:column;gap:16px}
.msg{max-width:78%;padding:13px 17px;border-radius:var(--r-lg);font-size:15px;line-height:1.5}
.msg.user{align-self:flex-end;background:var(--grad);color:#0B0B12;font-weight:500;border-bottom-right-radius:4px}
.msg.ai{align-self:flex-start;background:var(--surface-2);border:1px solid var(--border);border-bottom-left-radius:4px}
.msg .src{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.msg .src span{font-size:11px;color:var(--txt-mut);background:rgba(255,255,255,.05);border:1px solid var(--border);padding:3px 9px;border-radius:var(--r-pill)}
.areveal{opacity:0;transform:translateY(8px);animation:msgIn .5s forwards}
@keyframes msgIn{to{opacity:1;transform:none}}

/* ---- Cards / feature grid ---- */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:30px;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-5px);border-color:var(--border-2);box-shadow:var(--shadow)}
.card .icon{
  width:48px;height:48px;border-radius:var(--r-md);display:grid;place-items:center;font-size:22px;
  margin-bottom:var(--s4);background:var(--grad-soft);border:1px solid var(--border);
}
.card h3{margin-bottom:var(--s2)}
.card p{color:var(--txt-mut);font-size:15px}

/* ---- Logo bar ---- */
.logobar{border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:var(--s6) 0}
.logobar .t{text-align:center;font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--txt-dim);margin-bottom:var(--s5)}
.logobar .row{display:flex;gap:54px;justify-content:center;flex-wrap:wrap;align-items:center}
.logobar .row span{font-size:19px;font-weight:800;color:#54526e;letter-spacing:-.02em}

/* ---- Split feature (image + text) ---- */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:60px;align-items:center}
.split.rev{grid-template-columns:1fr 1.05fr}
.split.rev .split-media{order:2}
.split-media{
  background:var(--grad-soft);border:1px solid var(--border);border-radius:var(--r-xl);
  height:360px;position:relative;overflow:hidden;
}
.split h2{margin-bottom:var(--s4)}
.split p{color:var(--txt-mut);margin-bottom:var(--s5)}
.checks{display:flex;flex-direction:column;gap:12px}
.checks li{display:flex;gap:12px;align-items:flex-start;font-size:16px}
.checks li::before{content:"";width:20px;height:20px;border-radius:6px;background:var(--grad-soft);border:1px solid var(--border);flex:none;margin-top:2px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238B7BFF' stroke-width='3'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center}

/* ---- Stats band ---- */
.stats{
  background:var(--grad-soft);border:1px solid var(--border);border-radius:var(--r-xl);
  padding:56px 40px;display:flex;justify-content:space-around;flex-wrap:wrap;gap:30px;
}
.stat{text-align:center}
.stat b{display:block;font-size:52px;font-weight:800;letter-spacing:-.02em}
.stat span{color:var(--txt-mut);font-size:15px}

/* ---- Pricing ---- */
.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.tier{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-xl);padding:34px;display:flex;flex-direction:column}
.tier.hl{border-color:var(--violet);box-shadow:var(--glow);position:relative}
.tier.hl::after{content:"Most popular";position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--grad);color:#0B0B12;font-size:12px;font-weight:700;padding:5px 14px;border-radius:var(--r-pill)}
.tier .name{font-size:15px;font-weight:700;color:var(--txt-mut)}
.tier .price{font-size:48px;font-weight:800;letter-spacing:-.02em;margin:10px 0 2px}
.tier .price small{font-size:15px;font-weight:500;color:var(--txt-mut)}
.tier .desc{color:var(--txt-mut);font-size:14.5px;margin-bottom:var(--s5)}
.tier .feat{display:flex;flex-direction:column;gap:12px;margin-bottom:var(--s6);flex:1}
.tier .feat li{display:flex;gap:10px;font-size:15px;color:var(--txt)}
.tier .feat li::before{content:"✓";color:var(--violet);font-weight:800}

/* ---- Testimonial ---- */
.quote{max-width:820px;margin:0 auto;text-align:center}
.quote p{font-size:clamp(22px,2.6vw,30px);font-weight:600;letter-spacing:-.01em;line-height:1.4}
.quote .by{margin-top:var(--s5);display:flex;gap:12px;align-items:center;justify-content:center;color:var(--txt-mut);font-size:15px}
.quote .av{width:42px;height:42px;border-radius:50%;background:var(--grad)}

/* ---- FAQ ---- */
.faq{max-width:760px;margin:0 auto}
.faq details{border-bottom:1px solid var(--border);padding:20px 0}
.faq summary{cursor:pointer;font-size:18px;font-weight:600;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--violet);font-size:24px;font-weight:400}
.faq details[open] summary::after{content:"−"}
.faq p{color:var(--txt-mut);margin-top:12px;font-size:15.5px}

/* ---- CTA band ---- */
.cta-band{
  text-align:center;background:var(--grad-soft);border:1px solid var(--border);
  border-radius:var(--r-xl);padding:74px 40px;position:relative;overflow:hidden;
}
.cta-band h2{margin-bottom:var(--s4)}
.cta-band p{color:var(--txt-mut);max-width:520px;margin:0 auto var(--s6)}

/* ---- Footer ---- */
.footer{border-top:1px solid var(--border);padding:var(--s8) 0 var(--s6);margin-top:var(--s9)}
.footer .cols{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:40px}
.footer h4{font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--txt-dim);margin-bottom:var(--s4)}
.footer a{display:block;color:var(--txt-mut);font-size:15px;padding:5px 0;transition:color .15s}
.footer a:hover{color:var(--txt)}
.footer .brand p{color:var(--txt-mut);font-size:15px;max-width:280px;margin-top:var(--s3)}
.footer .base{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-top:var(--s7);padding-top:var(--s5);border-top:1px solid var(--border);color:var(--txt-dim);font-size:14px}

/* ---- Scroll reveal ---- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease}
.reveal.in{opacity:1;transform:none}

/* ---- Page hero (inner pages) ---- */
.page-hero{position:relative;padding:calc(var(--nav-h) + 70px) 0 var(--s7);overflow:hidden;text-align:center}
.page-hero .wrap{position:relative;z-index:2}

/* ---- Responsive ---- */
@media(max-width:960px){
  .grid-3,.grid-4{grid-template-columns:1fr 1fr}
  .split,.split.rev{grid-template-columns:1fr}
  .split.rev .split-media{order:0}
  .pricing{grid-template-columns:1fr}
  .footer .cols{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .wrap{padding:0 20px}
  .nav-links,.nav-cta .btn-text{display:none}
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr}
  .footer .cols{grid-template-columns:1fr}
  .stat b{font-size:40px}
}