/* ============ Brenvia — dark theme ============ */
:root{
  --bg:#0a0a0c;
  --surface:#131318;
  --surface-2:#1a1a22;
  --line:rgba(255,255,255,.08);
  --text:#eceaf4;
  --muted:#9b98a8;
  --purple:#8b5cf6;
  --purple-soft:rgba(139,92,246,.16);
  --cyan:#22d3ee;
  --radius:16px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:'Space Grotesk',sans-serif;line-height:1.15;letter-spacing:-.01em}
h1{font-size:clamp(2.2rem,5vw,3.6rem);font-weight:700}
h2{font-size:clamp(1.7rem,3.5vw,2.4rem);font-weight:600;margin-bottom:1rem}
h3{font-size:1.1rem;font-weight:600;margin-bottom:.4rem}
p{color:var(--muted)}
strong{color:var(--text)}
img{max-width:100%}

.container{width:min(1120px,92%);margin-inline:auto}
.narrow{width:min(760px,92%)}
.center{text-align:center}

.eyebrow{
  font-size:.78rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--purple);margin-bottom:.9rem;
}
.grad{
  background:linear-gradient(90deg,var(--purple),var(--cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-block;
  background:var(--purple);
  color:#fff;text-decoration:none;font-weight:600;font-size:.95rem;
  padding:.85rem 1.6rem;border-radius:999px;
  transition:transform .25s ease, box-shadow .25s ease, background .25s ease;
}
.btn:hover{transform:translateY(-2px) scale(1.02);box-shadow:0 8px 30px rgba(139,92,246,.35)}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--purple);box-shadow:none;background:var(--purple-soft)}
.btn-small{padding:.55rem 1.2rem;font-size:.88rem}
.btn-big{font-size:1.05rem;padding:1rem 2rem}

/* ---------- navbar ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:50;
  padding:1rem 0;
  transition:background .3s ease, box-shadow .3s ease, padding .3s ease;
}
.nav.scrolled{
  background:rgba(10,10,12,.82);
  backdrop-filter:blur(14px);
  box-shadow:0 1px 0 var(--line);
  padding:.6rem 0;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between}
.logo{
  font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:1.35rem;
  color:var(--text);text-decoration:none;letter-spacing:-.02em;
}
.logo span{color:var(--purple)}
.nav-links{display:flex;align-items:center;gap:1.6rem}
.nav-links a{
  color:var(--muted);text-decoration:none;font-size:.92rem;font-weight:500;
  transition:color .2s ease;
}
.nav-links a:hover{color:var(--text)}
.nav-links .btn{color:#fff}

.burger{display:none;background:none;border:0;cursor:pointer;padding:.4rem}
.burger span{display:block;width:22px;height:2px;background:var(--text);margin:5px 0;transition:.3s}
.burger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.active span:nth-child(2){opacity:0}
.burger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- hero ---------- */
.hero{position:relative;padding:9.5rem 0 5rem;overflow:hidden}
.hero-glow{
  position:absolute;inset:-40% -20% auto;height:120%;
  background:
    radial-gradient(600px 400px at 75% 20%, rgba(139,92,246,.22), transparent 65%),
    radial-gradient(500px 350px at 15% 10%, rgba(34,211,238,.10), transparent 60%);
  animation:drift 14s ease-in-out infinite alternate;
  pointer-events:none;
}
@keyframes drift{from{transform:translateY(0)}to{transform:translateY(30px)}}

.hero-grid{
  position:relative;display:grid;grid-template-columns:1.15fr .85fr;
  gap:3rem;align-items:center;
}
.lead{font-size:1.12rem;margin:1.2rem 0 1.8rem;max-width:34rem}
.hero-actions{display:flex;gap:.9rem;flex-wrap:wrap}
.hero-note{font-size:.85rem;margin-top:1.4rem;color:var(--muted)}

/* signature: phone mock */
.phone-wrap{display:flex;justify-content:center}
.phone{
  position:relative;width:270px;height:520px;
  background:linear-gradient(160deg,var(--surface),var(--surface-2));
  border:1px solid var(--line);border-radius:38px;
  box-shadow:0 30px 80px rgba(0,0,0,.55), inset 0 0 0 6px rgba(255,255,255,.03);
  padding:2.6rem 1rem 1rem;
}
.phone-notch{
  position:absolute;top:14px;left:50%;transform:translateX(-50%);
  width:90px;height:18px;border-radius:999px;background:#000;border:1px solid var(--line);
}
.video-card{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;backdrop-filter:blur(6px);
}
.video-thumb{
  height:130px;display:grid;place-items:center;
  background:
    radial-gradient(120px 80px at 70% 30%, rgba(34,211,238,.25), transparent),
    linear-gradient(140deg,#26263a,#101018);
}
.play{
  width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,.92);
  clip-path:none;position:relative;
}
.play::after{
  content:"";position:absolute;left:17px;top:12px;
  border-left:14px solid #0a0a0c;border-top:10px solid transparent;border-bottom:10px solid transparent;
}
.video-meta{padding:.9rem}
.badge{
  display:inline-block;font-size:.66rem;font-weight:600;letter-spacing:.03em;
  color:#cfd2dc;background:rgba(255,255,255,.08);
  padding:.25rem .55rem;border-radius:6px;margin-bottom:.55rem;
}
.video-title{color:var(--text);font-weight:600;font-size:.92rem;line-height:1.35}
.video-sub{font-size:.78rem;margin-top:.35rem}

.stat-chip{
  position:absolute;font-size:.72rem;font-weight:600;color:var(--text);
  background:rgba(19,19,24,.9);border:1px solid var(--line);
  padding:.5rem .8rem;border-radius:999px;backdrop-filter:blur(8px);
  box-shadow:0 10px 30px rgba(0,0,0,.4);
}
.chip-1{right:-34px;top:44%;border-color:rgba(139,92,246,.5)}
.chip-2{left:-30px;bottom:14%;border-color:rgba(34,211,238,.4)}

/* ---------- sections ---------- */
.section{padding:5.5rem 0}
.section-alt{background:linear-gradient(180deg,transparent,rgba(139,92,246,.05) 30%,transparent)}
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:2.2rem}
.value{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.4rem;transition:transform .25s ease,border-color .25s ease;
}
.value:hover{transform:translateY(-4px);border-color:rgba(139,92,246,.45)}

/* cards */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:2.2rem}
.card{
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:1.6rem 1.3rem;backdrop-filter:blur(6px);
  transition:transform .28s ease, border-color .28s ease, box-shadow .28s ease;
}
.card:hover{
  transform:translateY(-6px) scale(1.01);
  border-color:rgba(139,92,246,.5);
  box-shadow:0 18px 50px rgba(139,92,246,.15);
}
.card-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--purple-soft);color:var(--purple);
  font-size:1.2rem;margin-bottom:1rem;
}

/* steps */
.steps{list-style:none;margin-top:2.2rem;display:grid;gap:1rem}
.step{
  display:flex;gap:1.1rem;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:1.3rem 1.4rem;
  transition:border-color .25s ease, transform .25s ease;
}
.step:hover{border-color:rgba(34,211,238,.4);transform:translateX(4px)}
.step-num{
  flex:0 0 38px;height:38px;border-radius:50%;
  display:grid;place-items:center;font-family:'Space Grotesk',sans-serif;font-weight:700;
  background:linear-gradient(135deg,var(--purple),var(--cyan));color:#fff;
}

/* FAQ accordion */
.faq-list{margin-top:2rem;display:grid;gap:.7rem}
.faq{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  padding:0 1.2rem;overflow:hidden;transition:border-color .25s ease;
}
.faq[open]{border-color:rgba(139,92,246,.5)}
.faq summary{
  cursor:pointer;list-style:none;
  font-weight:600;color:var(--text);padding:1.05rem 0;
  position:relative;padding-right:2rem;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:.2rem;top:50%;transform:translateY(-50%);
  color:var(--purple);font-size:1.3rem;transition:transform .25s ease;
}
.faq[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq p{padding:0 0 1.1rem}

/* contact */
.section-contact{
  background:
    radial-gradient(500px 300px at 50% 0%, rgba(139,92,246,.14), transparent 70%);
}
.section-contact .btn-big{margin-top:1.4rem}

/* footer */
.footer{border-top:1px solid var(--line);padding:2rem 0}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.footer p{font-size:.85rem}

/* reveal animation */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease, transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .hero-glow{animation:none}
  html{scroll-behavior:auto}
}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:3.5rem}
  .phone-wrap{order:2}
  .cards{grid-template-columns:repeat(2,1fr)}
  .values{grid-template-columns:1fr}
  .chip-1{right:6px}
  .chip-2{left:6px}
}
@media (max-width:680px){
  .nav-links{
    position:fixed;inset:0 0 0 auto;width:min(78vw,320px);
    background:rgba(12,12,16,.97);backdrop-filter:blur(16px);
    flex-direction:column;justify-content:center;gap:2rem;
    transform:translateX(100%);transition:transform .3s ease;
  }
  .nav-links.open{transform:none}
  .burger{display:block;position:relative;z-index:60}
  .cards{grid-template-columns:1fr}
  .hero{padding-top:7.5rem}
}