/* =========================================================
   Zett AI — Premium SaaS landing
   Palette: light blue #4DA6FF + white. Glassmorphism modern.
   ========================================================= */

:root{
  --blue:#4DA6FF;
  --blue-600:#2F8BFF;
  --blue-700:#1E6FE0;
  --blue-50:#EEF5FF;
  --blue-100:#DDECFF;
  --ink:#0B1B2E;
  --ink-2:#33445A;
  --muted:#6A7A8C;
  --white:#FFFFFF;
  --bg:#F7FBFF;
  --line:rgba(20,60,110,.10);
  --glass:rgba(255,255,255,.72);
  --shadow-sm:0 4px 16px rgba(20,60,110,.08);
  --shadow:0 18px 50px rgba(25,80,150,.14);
  --shadow-lg:0 40px 90px rgba(25,80,150,.22);
  --grad:linear-gradient(120deg,#4DA6FF,#2F8BFF 55%,#1E6FE0);
  --radius:20px;
  --radius-lg:28px;
  --maxw:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.brand__name{font-family:'Poppins','Inter',sans-serif;line-height:1.12;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
.container{width:min(var(--maxw),92vw);margin-inline:auto}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ===== Reveal animations (JS-gated: visible if JS fails) ===== */
html.js [data-reveal]{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
html.js [data-reveal].is-visible{opacity:1;transform:none}
/* Defensive: split text never stays invisible */
.reveal[data-split]{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html.js [data-reveal]{opacity:1;transform:none;transition:none}
}

/* ===== Aurora mouse-reactive backdrop ===== */
.aurora{position:fixed;inset:0;z-index:-2;overflow:hidden;pointer-events:none;background:
  radial-gradient(1200px 600px at 80% -10%,#E9F3FF, transparent 60%),
  radial-gradient(900px 500px at -10% 20%,#F0F7FF, transparent 60%),var(--bg)}
.aurora__blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.55;
  transition:transform 1.1s var(--ease)}
.aurora__blob--1{width:520px;height:520px;top:-120px;left:-80px;background:radial-gradient(circle,#9CD0FF,transparent 70%)}
.aurora__blob--2{width:620px;height:620px;top:200px;right:-160px;background:radial-gradient(circle,#BFE0FF,transparent 70%)}
.aurora__blob--3{width:480px;height:480px;bottom:-160px;left:30%;background:radial-gradient(circle,#D6ECFF,transparent 70%)}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font-weight:600;font-size:.98rem;padding:.85rem 1.5rem;border-radius:999px;
  border:1px solid transparent;cursor:pointer;transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s;
  white-space:nowrap}
.btn--lg{padding:1.05rem 1.9rem;font-size:1.02rem}
.btn--block{width:100%}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 12px 28px rgba(47,139,255,.35)}
.btn--primary:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(47,139,255,.45)}
.btn--ghost{background:rgba(255,255,255,.7);color:var(--ink);border-color:var(--line);backdrop-filter:blur(8px)}
.btn--ghost:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:var(--blue)}
.btn--white{background:#fff;color:var(--blue-700)}
.btn--white:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}

/* ===== Navbar ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;padding:.8rem 0;transition:padding .3s var(--ease),background .3s,box-shadow .3s}
.nav.is-stuck{background:var(--glass);backdrop-filter:blur(16px);box-shadow:var(--shadow-sm);padding:.55rem 0;border-bottom:1px solid var(--line)}
.nav__inner{display:flex;align-items:center;gap:1.5rem}
.brand{display:flex;align-items:center;gap:.55rem;font-weight:700}
.brand__name{font-size:1.3rem;font-weight:700}
.brand__ai{color:var(--blue)}
.nav__links{display:flex;gap:1.6rem;margin-left:auto;font-weight:500;font-size:.95rem}
.nav__links a{color:var(--ink-2);position:relative;padding:.2rem 0}
.nav__links a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--grad);transition:width .3s var(--ease)}
.nav__links a:hover{color:var(--ink)}
.nav__links a:hover::after{width:100%}
.nav__cta{margin-left:.2rem}
.nav__burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px;margin-left:auto}
.nav__burger span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.3s var(--ease)}
.nav__burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__burger.is-open span:nth-child(2){opacity:0}
.nav__burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== Hero ===== */
.hero{padding:9.5rem 0 5rem}
.hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center}
.pill{display:inline-flex;align-items:center;gap:.5rem;background:#fff;border:1px solid var(--line);
  color:var(--blue-700);font-weight:600;font-size:.82rem;padding:.4rem .85rem;border-radius:999px;box-shadow:var(--shadow-sm)}
.pill__dot{width:8px;height:8px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 4px rgba(77,166,255,.2)}
.hero__title{font-size:clamp(2.3rem,5vw,3.65rem);font-weight:800;margin:1.1rem 0 1.2rem}
.hero__sub{font-size:1.15rem;color:var(--ink-2);max-width:33em}
.hero__cta{display:flex;gap:.9rem;margin:1.8rem 0 1.6rem;flex-wrap:wrap}
.hero__trust{list-style:none;display:flex;gap:1.8rem;flex-wrap:wrap;color:var(--muted);font-size:.92rem}
.hero__trust strong{display:block;font-family:'Poppins';font-size:1.35rem;color:var(--ink);font-weight:700}

/* ===== Hero mockup ===== */
.hero__mockup{position:relative;perspective:1400px}
.mock{background:var(--glass);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.7);
  border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.mock--dash{transform:rotateY(-9deg) rotateX(4deg);transform-style:preserve-3d}
.mock__bar{display:flex;align-items:center;gap:.4rem;padding:.7rem .9rem;border-bottom:1px solid var(--line)}
.dot{width:11px;height:11px;border-radius:50%}
.dot--r{background:#ff6b6b}.dot--y{background:#ffd166}.dot--g{background:#06d6a0}
.mock__url{margin-left:.6rem;font-size:.74rem;color:var(--muted);background:#fff;border:1px solid var(--line);padding:.18rem .7rem;border-radius:999px}
.mock__body{display:grid;grid-template-columns:54px 1fr;gap:.9rem;padding:1rem}
.mock__sidebar{display:flex;flex-direction:column;gap:.7rem;align-items:center;padding-top:.3rem}
.mlogo{width:32px;height:32px;border-radius:10px;background:var(--grad)}
.mitem{width:32px;height:10px;border-radius:6px;background:var(--blue-100)}
.mitem--on{background:var(--blue);width:34px}
.kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:.6rem}
.kpi{background:#fff;border:1px solid var(--line);border-radius:14px;padding:.7rem}
.kpi__label{display:block;font-size:.66rem;color:var(--muted)}
.kpi__val{display:block;font-family:'Poppins';font-weight:700;font-size:1.35rem}
.kpi__trend{font-size:.68rem;font-weight:600;color:#06b67a}
.kpi__trend--down{color:#06b67a}
.chart{margin-top:.8rem;background:#fff;border:1px solid var(--line);border-radius:14px;padding:.6rem;height:120px}
.chart svg{height:100%}
.chart__line{stroke-dasharray:900;stroke-dashoffset:900;animation:draw 2.2s var(--ease) .4s forwards}
@keyframes draw{to{stroke-dashoffset:0}}

.mock--chat{position:absolute;bottom:-30px;left:-36px;width:300px;padding:.9rem;font-size:.85rem}
.chat__head{display:flex;align-items:center;gap:.6rem;margin-bottom:.7rem}
.chat__avatar{width:34px;height:34px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:700;font-size:.78rem}
.chat__head strong{display:block;font-size:.86rem}
.chat__status{font-size:.68rem;color:#06b67a}
.chat__bubble{padding:.55rem .8rem;border-radius:14px;margin-bottom:.45rem;max-width:88%;font-size:.8rem;line-height:1.4}
.chat__bubble--in{background:var(--blue-50);border-top-left-radius:4px}
.chat__bubble--out{background:var(--grad);color:#fff;margin-left:auto;border-top-right-radius:4px}
.chat__typing{display:flex;gap:4px;padding:.3rem .2rem}
.chat__typing span{width:7px;height:7px;border-radius:50%;background:var(--blue);animation:blink 1.2s infinite}
.chat__typing span:nth-child(2){animation-delay:.2s}
.chat__typing span:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,60%,100%{opacity:.3}30%{opacity:1}}

.mock--chip{position:absolute;top:-26px;right:-24px;display:flex;align-items:center;gap:.6rem;padding:.7rem .95rem;font-size:.8rem}
.chip__icon{width:30px;height:30px;border-radius:50%;background:#06d6a0;color:#fff;display:grid;place-items:center;font-weight:700}
.mock--chip strong{display:block}
.mock--chip span{color:var(--muted);font-size:.72rem}
.float-a{animation:floaty 6s ease-in-out infinite}
.float-b{animation:floaty 7s ease-in-out infinite reverse}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}

/* ===== Strip ===== */
.strip{padding:1.8rem 0;border-block:1px solid var(--line);background:rgba(255,255,255,.5)}
.strip__inner{display:flex;align-items:center;gap:2rem;flex-wrap:wrap;justify-content:center}
.strip__label{color:var(--muted);font-size:.85rem;font-weight:500}
.strip__logos{list-style:none;display:flex;gap:1.6rem;flex-wrap:wrap;color:var(--ink-2);font-weight:600;font-size:.92rem;opacity:.7}

/* ===== Sections ===== */
.section{padding:6rem 0}
.section--alt{background:linear-gradient(180deg,rgba(238,245,255,.6),rgba(247,251,255,.2))}
.head{text-align:center;max-width:42rem;margin:0 auto 3.2rem}
.eyebrow{display:inline-block;font-weight:700;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--blue-600);margin-bottom:.8rem}
.eyebrow--light{color:#cfe6ff}
.h2{font-size:clamp(1.9rem,3.6vw,2.7rem);font-weight:700}
.h2--light{color:#fff}
.lead{color:var(--ink-2);font-size:1.1rem;margin-top:.9rem}

/* ===== Grids & cards ===== */
.grid{display:grid;gap:1.4rem}
.grid--3{grid-template-columns:repeat(3,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.8rem;
  box-shadow:var(--shadow-sm);transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(77,166,255,.4)}
.card h3{font-size:1.18rem;margin:.9rem 0 .5rem}
.card p{color:var(--ink-2);font-size:.98rem}
.ico,.solico,.uc__ico{display:grid;place-items:center;width:54px;height:54px;border-radius:16px;font-size:1.5rem}
.ico{background:#FFF1F0}
.card--prob:nth-child(2) .ico{background:#FFF7E8}
.card--prob:nth-child(3) .ico{background:#EEF5FF}
.card--prob:nth-child(4) .ico{background:#F0FFF7}
.card--accent{background:var(--grad);color:#fff;border:0}
.card--accent h3,.card--accent p{color:#fff}
.card--accent p{opacity:.92}
.card--accent .ico{background:rgba(255,255,255,.2)}
.solico{background:var(--blue-50);color:var(--blue-700)}
.card--sol:hover .solico{background:var(--grad)}

/* ===== Stats ===== */
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:1.2rem}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.8rem 1.2rem;text-align:center;box-shadow:var(--shadow-sm);transition:transform .35s var(--ease),box-shadow .35s}
.stat:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.stat__num{display:block;font-family:'Poppins';font-weight:800;font-size:clamp(1.8rem,3vw,2.5rem);background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat__txt{color:var(--ink-2);font-size:.92rem;margin-top:.3rem;display:block}

/* ===== Timeline ===== */
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:1.6rem;position:relative}
.timeline::before{content:"";position:absolute;top:42px;left:12%;right:12%;height:2px;background:linear-gradient(90deg,var(--blue-100),var(--blue),var(--blue-100));z-index:0}
.step{position:relative;z-index:1;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:2rem 1.6rem;text-align:center;box-shadow:var(--shadow-sm)}
.step__num{display:inline-grid;place-items:center;width:64px;height:64px;border-radius:50%;background:var(--grad);color:#fff;font-family:'Poppins';font-weight:700;font-size:1.3rem;margin-bottom:1rem;box-shadow:0 10px 24px rgba(47,139,255,.4)}
.step h3{font-size:1.2rem;margin-bottom:.5rem}
.step p{color:var(--ink-2);font-size:.97rem}

/* ===== Use cases ===== */
.uc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;box-shadow:var(--shadow-sm);transition:transform .35s var(--ease),box-shadow .35s}
.uc:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.uc__ico{background:var(--blue-50);margin-bottom:.9rem}
.uc h3{font-size:1.1rem;margin-bottom:.4rem}
.uc p{color:var(--ink-2);font-size:.95rem}

/* ===== Testimonials ===== */
.tcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.9rem;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:1.1rem;transition:transform .35s var(--ease),box-shadow .35s}
.tcard:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.quote{font-size:1.05rem;color:var(--ink);line-height:1.55}
.person{display:flex;align-items:center;gap:.8rem;margin-top:auto}
.avatar{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:700;font-family:'Poppins';background:linear-gradient(135deg,var(--a),var(--b))}
.person strong{display:block;font-size:.98rem}
.person em{font-style:normal;color:var(--muted);font-size:.84rem}
.result{display:inline-block;align-self:flex-start;background:var(--blue-50);color:var(--blue-700);font-weight:700;font-size:.85rem;padding:.4rem .9rem;border-radius:999px}

/* ===== FAQ ===== */
.faq__wrap{max-width:780px}
.faq{display:flex;flex-direction:column;gap:.8rem}
.qa{background:#fff;border:1px solid var(--line);border-radius:16px;padding:.4rem 1.3rem;box-shadow:var(--shadow-sm);transition:box-shadow .3s,border-color .3s}
.qa[open]{border-color:rgba(77,166,255,.45);box-shadow:var(--shadow-sm)}
.qa summary{list-style:none;cursor:pointer;font-weight:600;font-size:1.05rem;padding:1rem 0;display:flex;justify-content:space-between;align-items:center;gap:1rem}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";font-size:1.5rem;color:var(--blue);font-weight:400;transition:transform .3s var(--ease)}
.qa[open] summary::after{transform:rotate(45deg)}
.qa p{color:var(--ink-2);padding-bottom:1.1rem;font-size:.98rem;animation:fade .4s var(--ease)}
@keyframes fade{from{opacity:0;transform:translateY(-6px)}to{opacity:1}}

/* ===== CTA final ===== */
.cta{padding:5.5rem 0;background:var(--grad);position:relative;overflow:hidden;margin-top:1rem}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 360px at 85% 10%,rgba(255,255,255,.22),transparent 60%);pointer-events:none}
.cta__grid{display:grid;grid-template-columns:1fr;gap:3rem;justify-items:center;text-align:center;position:relative}
.cta__copy{max-width:42rem}
.cta__lead{color:rgba(255,255,255,.92);font-size:1.12rem;margin:1rem auto 1.4rem;max-width:34em}
.cta__bullets{list-style:none;display:flex;flex-direction:column;gap:.6rem;color:#fff;font-weight:500;margin:0 auto 1.8rem;width:fit-content;text-align:left}
.cta__btn{box-shadow:0 18px 40px rgba(0,0,0,.18)}
.cta__actions{display:flex;gap:.9rem;flex-wrap:wrap}
.btn--wa{background:#25D366;color:#fff}
.btn--wa:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(0,0,0,.2);background:#1ebe5b}
@media (max-width:480px){
  .cta__actions{flex-direction:column;align-items:stretch}
  .cta__actions .btn{width:100%}
}

.cta__card{background:#fff;border-radius:var(--radius-lg);padding:1.4rem;box-shadow:var(--shadow-lg)}
.calendly__placeholder{background:var(--blue-50);border:1px dashed var(--blue);border-radius:18px;padding:1.6rem;text-align:center;color:var(--ink-2);margin-bottom:1.2rem}
.calendly__badge{display:inline-block;background:var(--grad);color:#fff;font-weight:700;font-size:.78rem;padding:.3rem .9rem;border-radius:999px;margin-bottom:.7rem}
.calendly__placeholder p{font-size:.9rem}

.lead-form h3{font-size:1.15rem;margin-bottom:1rem;text-align:center}
.field{margin-bottom:.9rem}
.field label{display:block;font-size:.82rem;font-weight:600;color:var(--ink-2);margin-bottom:.35rem}
.field input{width:100%;padding:.8rem 1rem;border:1px solid var(--line);border-radius:12px;font-size:.96rem;font-family:inherit;transition:border-color .25s,box-shadow .25s;background:#fff}
.field input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px rgba(77,166,255,.18)}
.lead-form__ok{text-align:center;color:#06b67a;font-weight:600;margin-top:.9rem}
.lead-form__note{text-align:center;color:var(--muted);font-size:.78rem;margin-top:.8rem}

/* ===== Footer ===== */
.footer{background:#0B1B2E;color:#cdd9e6;padding:3.5rem 0 1.8rem}
.footer__inner{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2rem;padding-bottom:2rem;border-bottom:1px solid rgba(255,255,255,.1)}
.brand--footer .brand__name{color:#fff}
.footer__brand p{color:#8da3b8;margin-top:.8rem;font-size:.92rem;max-width:24em}
.footer__nav,.footer__contact{display:flex;flex-direction:column;gap:.7rem;font-size:.95rem}
.footer__nav a,.footer__contact a{color:#cdd9e6;transition:color .25s}
.footer__nav a:hover,.footer__contact a:hover{color:var(--blue)}
.footer__bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:.6rem;padding-top:1.4rem;color:#8da3b8;font-size:.85rem}

/* ===== Responsive ===== */
/* Collapse nav links to burger early, but keep the CTA always visible top-right */
@media (max-width:960px){
  .nav__links{display:none}
  .nav__burger{display:flex;margin-left:.6rem}
  .nav__cta{display:inline-flex;margin-left:auto;padding:.62rem 1.1rem;font-size:.9rem}
  .nav__links.is-open{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;
    background:var(--glass);backdrop-filter:blur(16px);padding:1.2rem 6vw;gap:1.1rem;box-shadow:var(--shadow);margin:0}
}
@media (max-width:420px){
  .nav__cta{padding:.55rem .9rem;font-size:.82rem}
  .brand__name{font-size:1.15rem}
}

@media (max-width:980px){
  .hero__grid,.cta__grid{grid-template-columns:1fr;gap:2.5rem}
  .hero{padding:8rem 0 3rem}
  .hero__mockup{max-width:460px;margin:1rem auto 0}
  .grid--3{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .timeline{grid-template-columns:1fr;gap:1.2rem}
  .timeline::before{display:none}
  .footer__inner{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .grid--3,.stats{grid-template-columns:1fr}
  .hero__sub{font-size:1.05rem}
  .mock--chat{left:-10px;width:84%}
  .mock--chip{right:-6px}
  .section{padding:4rem 0}
  .footer__inner{grid-template-columns:1fr;text-align:left}
  .footer__bottom{flex-direction:column}
}