/* Noah AI landing page — edit colors here */
:root{--primary:#8b5cf6;--bg:#fff;--surface:#f5f5f7;--surface-hover:#e5e5ea;--text:#1d1d1f;--muted:#86868b;--border:rgba(0,0,0,.08)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;line-height:1.5;overflow-x:hidden}
h1,h2,h3,h4{letter-spacing:-.02em;line-height:1.15}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
.container{max-width:1280px;margin:0 auto}
.section{padding:96px 24px}.section.alt{background:rgba(245,245,247,.5)}
.center{text-align:center}
.head{max-width:768px;margin:0 auto 48px;text-align:center}
.head h2,.title{font-size:clamp(2rem,4.5vw,3rem);font-weight:700;margin-bottom:24px}
.lead{font-size:1.125rem;color:var(--muted);font-weight:500}
.eyebrow{font-size:.75rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--primary);margin-bottom:8px}
[data-lucide]{width:24px;height:24px;stroke-width:1.5}
/* nav */
.nav{position:fixed;top:0;width:100%;z-index:50;padding:24px 0;transition:all .5s}
.nav.scrolled{padding:16px 0;background:rgba(255,255,255,.8);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--border)}
.nav .container{display:flex;justify-content:space-between;align-items:center;padding:0 24px}
.logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1.25rem}.logo img{width:32px;height:auto}
.links{display:flex;align-items:center;gap:32px}
.links a:not(.btn){font-size:.875rem;font-weight:500;color:var(--muted);transition:color .2s}.links a:not(.btn):hover{color:var(--text)}
.menu-btn{display:none}
.mobile{display:none;position:fixed;inset:0;z-index:40;background:rgba(255,255,255,.95);backdrop-filter:blur(24px);padding:96px 24px;flex-direction:column;gap:24px}
.mobile.open{display:flex}.mobile a:not(.btn){font-size:1.125rem;font-weight:500;border-bottom:1px solid #eee;padding-bottom:16px}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:16px 32px;border-radius:999px;font-weight:600;transition:all .3s}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 12px rgba(0,0,0,.1)}.btn-primary:hover{box-shadow:0 8px 24px rgba(139,92,246,.35)}
.btn-light{background:#fff;border:1px solid var(--border);font-weight:500}.btn-light:hover{background:var(--surface-hover)}
.btn-white{background:#fff;color:var(--text);box-shadow:0 4px 12px rgba(0,0,0,.15)}
.btn-sm{padding:10px 20px;font-size:.875rem}
/* hero */
.hero{padding:144px 24px 96px;position:relative;overflow:hidden;background:radial-gradient(60% 55% at 50% 0,rgba(139,92,246,.14),transparent 70%)}
.hero .container{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;animation:rise .9s cubic-bezier(.16,1,.3,1)}
@keyframes rise{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
.badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:999px;background:#fff;border:1px solid var(--border);font-size:.875rem;font-weight:500;margin-bottom:32px;box-shadow:0 1px 3px rgba(0,0,0,.06)}
.dot{position:relative;width:8px;height:8px;border-radius:50%;background:#22c55e;display:inline-block}
.dot::after{content:"";position:absolute;inset:0;border-radius:50%;background:#22c55e;animation:ping 1.5s infinite}
@keyframes ping{to{transform:scale(2.6);opacity:0}}
.hero h1{font-size:clamp(2.75rem,6vw,4.5rem);font-weight:700;line-height:1.05;margin-bottom:24px}
.hero p.lead{font-size:1.25rem;max-width:560px;margin-bottom:40px;line-height:1.6}
.actions{display:flex;gap:16px;flex-wrap:wrap}
/* product mock */
.mock{background:#fff;border:1px solid var(--border);border-radius:32px;box-shadow:0 25px 50px -12px rgba(0,0,0,.25);overflow:hidden}
.mock-top{display:flex;justify-content:space-between;align-items:center;padding:16px 24px;border-bottom:1px solid var(--border);background:var(--surface);font-size:.75rem;font-weight:600;color:var(--muted)}
.mock-top b{display:flex;align-items:center;gap:8px;font-size:1rem;color:var(--text)}.mock-top b svg{width:18px;height:18px;color:var(--primary)}
.mock-body{padding:24px;display:grid;gap:16px}
.alert{border:1px solid rgba(139,92,246,.35);background:rgba(139,92,246,.06);border-radius:16px;padding:20px}
.alert .row{display:flex;justify-content:space-between;margin-bottom:8px;font-size:.75rem;font-weight:600;color:var(--muted)}
.alert h4{font-size:1.125rem;margin-bottom:4px}.alert p{font-size:.875rem;color:var(--muted)}
.pills{display:flex;gap:8px;margin-top:16px}.pill{padding:8px 16px;border-radius:999px;font-size:.875rem;font-weight:600;background:#fff;border:1px solid var(--border)}.pill.on{background:var(--primary);color:#fff;border-color:var(--primary)}
.prep{border:1px solid var(--border);border-radius:16px;padding:20px}
.prep ul{list-style:none;display:grid;gap:10px;font-size:.875rem;font-weight:500}
.prep li,.check li{display:flex;align-items:flex-start;gap:10px}.prep li svg{width:18px;height:18px;color:#22c55e;flex:none}
.caption{text-align:center;font-size:.75rem;color:var(--muted);font-weight:500;margin-top:16px}
/* chips, cards, grids */
.chips{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;max-width:900px;margin:0 auto}
.chip{padding:8px 20px;border-radius:999px;background:#fff;border:1px solid var(--border);box-shadow:0 1px 3px rgba(0,0,0,.05);font-size:.875rem;font-weight:600}
.chips.small .chip{background:var(--surface);box-shadow:none;padding:8px 16px}
.grid{display:grid;gap:32px}.g4{grid-template-columns:repeat(4,1fr)}.g3{grid-template-columns:repeat(3,1fr)}
.card{background:#fff;border:1px solid var(--border);border-radius:24px;box-shadow:0 4px 24px rgba(0,0,0,.04);padding:32px;transition:box-shadow .4s,transform .4s}
.card:hover{box-shadow:0 16px 48px rgba(0,0,0,.08);transform:translateY(-4px)}
.card h3{font-size:1.25rem;margin-bottom:12px}.card p{color:var(--muted)}
.icon{width:48px;height:48px;border-radius:16px;background:#fff;border:1px solid var(--border);box-shadow:0 1px 3px rgba(0,0,0,.06);display:flex;align-items:center;justify-content:center;margin-bottom:24px;flex:none}
.blue{color:#3b82f6}.indigo{color:#6366f1}.fuchsia{color:#d946ef}.emerald{color:#10b981}.amber{color:#f59e0b}.rose{color:#f43f5e}.violet{color:#8b5cf6}.orange{color:#f97316}.sky{color:#0ea5e9}.teal{color:#14b8a6}
.step{font-size:.75rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--primary);margin-bottom:8px}
.uses{grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:80px}
.uses .card{display:flex;align-items:center;gap:16px;padding:20px;border-radius:24px}.uses .icon{margin:0;width:44px;height:44px}.uses span{font-weight:700}
/* demo + dark panels */
.demo{max-width:1152px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.steps{list-style:none;display:grid;gap:24px}.steps li{display:flex;gap:16px;align-items:flex-start;font-weight:500}
.steps b{width:32px;height:32px;border-radius:50%;background:var(--primary);color:#fff;font-size:.875rem;display:flex;align-items:center;justify-content:center;flex:none}
.steps span{padding-top:4px}
.dark{border-radius:32px;color:#fff;background:linear-gradient(135deg,#1d1d1f,var(--primary));box-shadow:0 25px 50px -12px rgba(0,0,0,.25)}
.panel{padding:40px}.panel h3{font-size:1.5rem;margin-bottom:24px}
.check{list-style:none;display:grid;gap:16px;font-weight:500}.check svg{width:20px;height:20px;flex:none;margin-top:2px}
.cta{max-width:896px;margin:0 auto;padding:56px 32px;text-align:center}
.cta h3{font-size:clamp(1.75rem,3.5vw,2.25rem);margin-bottom:16px}
.cta p{font-size:1.125rem;opacity:.9;font-weight:500;max-width:672px;margin:0 auto 32px}
/* team */
.team{grid-template-columns:repeat(4,1fr)}
.member{text-align:center;display:flex;flex-direction:column;align-items:center}
.member img{width:96px;height:96px;border-radius:50%;object-fit:cover;border:2px solid var(--border);margin-bottom:16px;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.member h4{font-size:1.125rem}.member .role{font-size:.875rem;font-weight:600;color:var(--primary);margin-bottom:12px}
.member p{font-size:.875rem;color:var(--muted);flex:1;margin-bottom:16px}
.member .tag{width:100%;border-top:1px solid var(--border);padding-top:16px;font:.75rem ui-monospace,monospace;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
/* contact */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:64px}
.contact .card:hover{transform:none;box-shadow:0 4px 24px rgba(0,0,0,.04)}
.info{display:grid;gap:24px;margin-top:32px}.info div{display:flex;align-items:center;gap:16px}.info .icon{margin:0}
.info small{display:block;font-size:.875rem;color:var(--muted);font-weight:500}.info strong{font-size:1.125rem;font-weight:600;white-space:pre-line}
.reveal{color:var(--primary);cursor:pointer;direction:rtl;unicode-bidi:bidi-override;display:inline-block}
form{display:grid;gap:24px}.two{display:grid;grid-template-columns:1fr 1fr;gap:24px}
label{font-size:.875rem;font-weight:500;display:block}
input[type=text],input[type=email]{width:100%;margin-top:8px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:12px 16px;font:inherit;outline:0}
input[type=text]:focus,input[type=email]:focus{box-shadow:0 0 0 2px rgba(139,92,246,.5)}
fieldset{border:0}legend{font-size:.875rem;font-weight:500;margin-bottom:12px}
.opts{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:16px;display:grid;gap:8px}
.opts label{display:flex;align-items:center;gap:12px;font-weight:400;cursor:pointer}.opts input{accent-color:var(--primary);width:18px;height:18px}
form .btn{width:100%;border-radius:12px}.btn:disabled{opacity:.7}
.note{font-size:.75rem;color:var(--muted);text-align:center}
.error{display:none;padding:16px;background:#fef2f2;border:1px solid #fecaca;color:#dc2626;border-radius:12px;font-size:.875rem;font-weight:500}
.success{display:none;text-align:center;padding:48px 0}.success h3{font-size:1.5rem;margin:16px 0 8px}.success p{color:var(--muted)}.success button{margin-top:16px;color:var(--primary);font-weight:500}
.tick{width:64px;height:64px;border-radius:50%;background:#dcfce7;color:#22c55e;display:inline-flex;align-items:center;justify-content:center}
/* footer, modal, scroll-top */
footer{background:var(--surface);border-top:1px solid var(--border);padding:64px 24px 32px}
.foot{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;margin-bottom:64px}
.foot p{color:var(--muted);font-weight:500;max-width:384px}.foot h4{margin-bottom:16px}
.foot ul{list-style:none;display:grid;gap:12px}.foot li a,.foot li button{font-size:.875rem;font-weight:500;color:var(--primary)}
.copy{border-top:1px solid var(--border);padding-top:32px;font-size:.875rem;color:var(--muted);font-weight:500}
dialog{margin:auto;width:calc(100% - 32px);max-width:768px;max-height:85vh;border:1px solid var(--border);border-radius:16px;padding:0;overflow:hidden;box-shadow:0 25px 50px -12px rgba(0,0,0,.35)}
dialog[open]{display:flex;flex-direction:column}dialog::backdrop{background:rgba(0,0,0,.6);backdrop-filter:blur(4px)}
dialog header{display:flex;justify-content:space-between;align-items:center;padding:24px;border-bottom:1px solid var(--border)}
dialog h2{font-size:1.5rem}dialog .body{padding:24px;overflow-y:auto}
dialog .body h3{font-size:1.25rem;margin:24px 0 12px}dialog .body p{color:var(--muted);margin-bottom:16px}dialog .body ul{color:var(--muted);padding-left:20px;margin-bottom:16px}
dialog footer{padding:24px;display:flex;justify-content:flex-end;border-top:1px solid var(--border)}
dialog footer button{background:var(--primary);color:#fff;padding:8px 24px;border-radius:8px;font-weight:500}
.x{width:32px;height:32px;border-radius:50%;background:var(--surface)}
#top{position:fixed;bottom:32px;right:32px;z-index:40;width:48px;height:48px;border-radius:50%;background:var(--primary);color:#fff;box-shadow:0 10px 15px rgba(0,0,0,.2);display:none;align-items:center;justify-content:center}
#top.show{display:flex}
@media(max-width:1024px){.g4,.team,.uses{grid-template-columns:repeat(2,1fr)}.hero .container,.demo,.contact{grid-template-columns:1fr}}
@media(max-width:768px){.links{display:none}.menu-btn{display:block}.g3,.foot,.two{grid-template-columns:1fr}.g4,.team{grid-template-columns:1fr}.section{padding:72px 20px}}