/* ============================================================
   Lisvel — marketing site design system
   Self-contained (independent of the app). Dark, indigo, modern.
   ============================================================ */
:root{
  --bg:#0A0D14; --bg-2:#111827; --bg-3:#1C2333; --bg-hover:#1F2A3C;
  --line:rgba(255,255,255,.08); --line-2:rgba(255,255,255,.14);
  --ink:#F0F4FF; --ink-2:#9AA8BF; --ink-3:#5A6B85;
  --primary:#6366F1; --primary-2:#8B5CF6; --accent:#818CF8;
  --success:#10B981; --warn:#F59E0B; --danger:#EF4444;
  --grad:linear-gradient(135deg,#6366F1 0%,#8B5CF6 100%);
  --grad-text:linear-gradient(120deg,#A5B4FC,#C4B5FD 60%,#F0ABFC);
  --r:14px; --r-lg:22px; --r-full:999px;
  --shadow:0 18px 50px rgba(0,0,0,.55); --shadow-sm:0 6px 22px rgba(0,0,0,.4);
  --maxw:1140px; --font:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --mono:'JetBrains Mono','SF Mono',Menlo,Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);background:var(--bg);color:var(--ink);
  line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;
  background-image:radial-gradient(ellipse 80% 50% at 50% -10%,rgba(99,102,241,.18),transparent 70%);
  background-repeat:no-repeat;background-attachment:fixed;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:88px 0}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
h1,h2,h3{line-height:1.12;letter-spacing:-.02em;font-weight:700}
h1{font-size:clamp(34px,6vw,60px)}
h2{font-size:clamp(26px,4vw,40px)}
h3{font-size:19px}
p{color:var(--ink-2)}
.lead{font-size:clamp(16px,2.2vw,20px);color:var(--ink-2);max-width:620px}
.gradient{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.center{text-align:center}
.muted{color:var(--ink-3)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;
  padding:12px 22px;border-radius:var(--r-full);border:1px solid transparent;cursor:pointer;
  transition:transform .15s ease,filter .15s ease,background .15s ease,border-color .15s ease;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(99,102,241,.35)}
.btn-primary:hover{filter:brightness(1.08)}
.btn-ghost{background:rgba(255,255,255,.04);color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{background:var(--bg-hover)}
.btn-lg{padding:15px 28px;font-size:16px}
.btn-block{width:100%;justify-content:center}

/* badges / pills */
.pill{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  padding:6px 14px;border-radius:var(--r-full);background:rgba(99,102,241,.12);
  border:1px solid var(--line-2);color:var(--accent)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 0 4px rgba(16,185,129,.18)}

/* ---------- header ---------- */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);
  background:rgba(10,13,20,.72);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:20px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:-.02em}
.brand-mark{width:30px;height:30px;border-radius:9px;background:var(--grad);display:grid;place-items:center;
  color:#fff;font-weight:800;box-shadow:0 0 18px rgba(99,102,241,.5)}
.nav-links{display:flex;gap:6px;margin-left:14px}
.nav-links a{padding:8px 12px;border-radius:10px;font-size:14.5px;color:var(--ink-2);transition:.15s}
.nav-links a:hover{color:var(--ink);background:rgba(255,255,255,.05)}
.nav-cta{margin-left:auto;display:flex;gap:10px;align-items:center}
.nav-toggle{display:none;margin-left:auto;background:rgba(255,255,255,.05);border:1px solid var(--line-2);
  color:var(--ink);width:42px;height:42px;border-radius:12px;font-size:20px;cursor:pointer}

/* ---------- hero ---------- */
.hero{padding:96px 0 72px;text-align:center}
.hero h1{margin:18px auto 0;max-width:920px}
.hero .lead{margin:22px auto 0;text-align:center}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:34px}
.hero-note{margin-top:16px;font-size:13px;color:var(--ink-3)}
.hero-shot{margin:56px auto 0;max-width:1000px;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line-2);box-shadow:var(--shadow);background:var(--bg-2)}
.hero-shot .bar{display:flex;gap:7px;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--bg-3)}
.hero-shot .bar i{width:11px;height:11px;border-radius:50%;background:#3a4a63}
.hero-frame{aspect-ratio:16/9;background:
  radial-gradient(circle at 30% 20%,rgba(99,102,241,.22),transparent 45%),
  radial-gradient(circle at 80% 70%,rgba(139,92,246,.18),transparent 45%),var(--bg-2);
  display:grid;place-items:center;color:var(--ink-3);font-size:14px}

/* logos / trust strip */
.trust{display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:center;align-items:center;
  color:var(--ink-3);font-size:13.5px;font-weight:600}
.trust span{display:inline-flex;align-items:center;gap:8px}

/* ---------- feature grid ---------- */
.grid{display:grid;gap:18px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,0));
  border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;transition:.2s}
.card:hover{border-color:var(--line-2);transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.card .ico{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;margin-bottom:16px;
  background:rgba(99,102,241,.12);border:1px solid var(--line-2);font-size:22px}
.card h3{margin-bottom:8px}
.card p{font-size:14.5px}

/* steps */
.steps{counter-reset:s;display:grid;gap:18px;grid-template-columns:repeat(3,1fr)}
.step{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;position:relative}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:-16px;left:24px;
  width:34px;height:34px;border-radius:10px;background:var(--grad);color:#fff;font-weight:800;
  display:grid;place-items:center;box-shadow:0 8px 20px rgba(99,102,241,.4)}
.step h3{margin:8px 0}

/* section heading helper */
.sec-head{max-width:640px;margin:0 auto 44px;text-align:center}
.sec-head h2{margin-top:10px}
.sec-head p{margin-top:12px}

/* ---------- pricing ---------- */
.prices{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;align-items:stretch}
.price{display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:26px}
.price.feature{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary),0 18px 50px rgba(99,102,241,.18);position:relative}
.price.feature::after{content:'Popular';position:absolute;top:-11px;right:20px;font-size:11px;font-weight:700;
  text-transform:uppercase;letter-spacing:.08em;background:var(--grad);color:#fff;padding:4px 10px;border-radius:var(--r-full)}
.price .name{font-weight:700;font-size:16px}
.price .amount{font-size:34px;font-weight:800;letter-spacing:-.03em;margin:10px 0 2px}
.price .amount small{font-size:14px;font-weight:600;color:var(--ink-3)}
.price .tagline{font-size:13px;color:var(--ink-3);min-height:34px}
.price ul{list-style:none;margin:18px 0;display:flex;flex-direction:column;gap:10px}
.price li{font-size:13.5px;color:var(--ink-2);padding-left:24px;position:relative;line-height:1.45}
.price li::before{content:'✓';position:absolute;left:0;color:var(--success);font-weight:700}
.price .btn{margin-top:auto}

/* ---------- FAQ ---------- */
.faq{max-width:780px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.qa{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.qa>button{width:100%;text-align:left;background:none;border:none;color:var(--ink);cursor:pointer;
  font-family:inherit;font-size:16px;font-weight:600;padding:18px 20px;display:flex;justify-content:space-between;gap:16px;align-items:center}
.qa>button .chev{transition:transform .2s;color:var(--ink-3);flex-shrink:0}
.qa.open>button .chev{transform:rotate(180deg)}
.qa .a{max-height:0;overflow:hidden;transition:max-height .25s ease}
.qa .a p{padding:0 20px 18px;font-size:14.5px}
.qa.open .a{max-height:320px}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(135deg,rgba(99,102,241,.16),rgba(139,92,246,.10));
  border:1px solid var(--line-2);border-radius:var(--r-lg);padding:54px 32px;text-align:center}
.cta-band h2{max-width:560px;margin:0 auto}
.cta-band .lead{margin:14px auto 26px}

/* ---------- legal / prose ---------- */
.prose{max-width:780px;margin:0 auto}
.prose h1{font-size:clamp(28px,4vw,40px);margin-bottom:10px}
.prose .updated{color:var(--ink-3);font-size:13px;margin-bottom:34px}
.prose h2{font-size:22px;margin:34px 0 12px}
.prose h3{font-size:17px;margin:22px 0 8px}
.prose p,.prose li{color:var(--ink-2);font-size:15px;margin-bottom:12px}
.prose ul{padding-left:22px;margin-bottom:12px}
.prose a{color:var(--accent);text-decoration:underline}
.notice{background:rgba(245,158,11,.08);border:1px solid rgba(245,158,11,.3);border-radius:var(--r);
  padding:14px 16px;font-size:13.5px;color:#FCD9A0;margin:20px 0}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--line);padding:60px 0 40px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.foot-grid h4{font-size:12px;text-transform:uppercase;letter-spacing:.12em;color:var(--ink-3);margin-bottom:14px;font-weight:700}
.foot-grid a{display:block;color:var(--ink-2);font-size:14px;padding:5px 0;transition:.15s}
.foot-grid a:hover{color:var(--ink)}
.foot-about{max-width:300px}
.foot-about p{font-size:14px;margin:12px 0 16px}
.foot-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:24px;border-top:1px solid var(--line);color:var(--ink-3);font-size:13px}
.foot-bottom .langs{display:flex;gap:12px;flex-wrap:wrap}

/* 404 */
.notfound{min-height:64vh;display:grid;place-items:center;text-align:center}
.notfound .big{font-size:clamp(80px,18vw,160px);font-weight:800;line-height:1;background:var(--grad-text);
  -webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .grid-3,.steps{grid-template-columns:1fr 1fr}
  .prices{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  section{padding:60px 0}
  .nav-links,.nav-cta .btn-ghost{display:none}
  .nav-toggle{display:block}
  .nav.open .nav-links{display:flex;position:absolute;top:66px;left:0;right:0;flex-direction:column;
    background:var(--bg-2);border-bottom:1px solid var(--line);padding:12px;gap:4px}
  .nav.open .nav-links a{padding:12px}
  .grid-3,.grid-2,.steps,.prices,.foot-grid{grid-template-columns:1fr}
  .hero{padding:64px 0 48px}
  .foot-about{max-width:none}
}