/* ===========================================================
   NexKeep — nexkeep.com
   =========================================================== */

:root{
  --bg:#06080f;
  --bg-soft:#0a0e1a;
  --surface:rgba(255,255,255,.035);
  --surface-2:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --text:#e8ecf5;
  --muted:#93a0b8;
  --accent:#38e8c8;
  --accent-2:#4f7cff;
  --radius:16px;
  --radius-sm:10px;
  --max:1140px;
  --ff: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --ff-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}

body{
  margin:0;
  font-family:var(--ff);
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  font-size:16px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

img,svg{max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3{line-height:1.2;margin:0;letter-spacing:-.02em;font-weight:650}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}

.container{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:22px}
.mono{font-family:var(--ff-mono);font-size:.8rem;color:var(--muted)}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

.skip-link{
  position:fixed;top:-60px;left:14px;z-index:999;
  background:var(--accent);color:#031;padding:10px 16px;border-radius:0 0 10px 10px;
  font-weight:600;transition:top .2s;
}
.skip-link:focus{top:0}

/* ---------- Background decoration ---------- */
.bg-grid{
  position:fixed;inset:0;z-index:-2;pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 0%, #000 0%, transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 50% 0%, #000 0%, transparent 72%);
}
.bg-glow{
  position:fixed;inset:0;z-index:-3;pointer-events:none;
  background:
    radial-gradient(620px 420px at 12% -5%, rgba(56,232,200,.16), transparent 70%),
    radial-gradient(760px 520px at 88% 8%, rgba(79,124,255,.18), transparent 70%),
    radial-gradient(700px 600px at 50% 110%, rgba(79,124,255,.10), transparent 70%);
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:999px;font-weight:600;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#04121a;box-shadow:0 8px 28px -10px rgba(79,124,255,.75);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px -10px rgba(56,232,200,.6)}
.btn-ghost{background:var(--surface);border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{background:var(--surface-2);border-color:var(--accent);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:.875rem}
.btn-block{width:100%}

.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:.8rem;font-weight:600;
  color:var(--accent);background:rgba(56,232,200,.08);
  border:1px solid rgba(56,232,200,.28);letter-spacing:.02em;
}

.eyebrow{
  display:block;font-size:.78rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--accent);margin-bottom:12px;
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:rgba(6,8,15,.6);
  border-bottom:1px solid transparent;
  transition:border-color .25s, background .25s;
}
.site-header.scrolled{border-bottom-color:var(--line);background:rgba(6,8,15,.88)}
.header-inner{display:flex;align-items:center;gap:20px;height:68px}

.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:30px;height:30px}
.brand-text{font-weight:700;font-size:1.12rem;letter-spacing:-.02em}
.brand-text span{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

.nav{display:flex;gap:4px;margin-left:auto}
.nav a{
  padding:8px 13px;border-radius:999px;font-size:.92rem;color:var(--muted);
  transition:color .18s, background .18s;
}
.nav a:hover{color:var(--text);background:var(--surface)}
.nav a.active{color:var(--text);background:var(--surface-2)}

.header-actions{display:flex;align-items:center;gap:10px}

.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  background:var(--surface);border:1px solid var(--line);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:17px;height:2px;border-radius:2px;background:var(--text);transition:transform .22s, opacity .22s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{padding:clamp(56px,9vw,104px) 0 clamp(40px,6vw,64px)}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,64px);align-items:center}
.hero-title{font-size:clamp(2.1rem,5.3vw,3.65rem);margin:20px 0 20px;font-weight:700}
.hero-title span{display:block}
.grad{
  background:linear-gradient(100deg,var(--accent),var(--accent-2) 70%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{color:var(--muted);font-size:clamp(1rem,1.5vw,1.11rem);max-width:56ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:30px;color:var(--muted);font-size:.9rem}
.hero-points li{display:flex;align-items:center;gap:8px}
.hero-points li::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));flex-shrink:0;
}

/* code card */
.hero-visual{position:relative}
.code-card{
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(170deg, rgba(16,22,38,.92), rgba(8,11,20,.92));
  box-shadow:0 40px 80px -40px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.06);
  overflow:hidden;animation:floaty 7s ease-in-out infinite;
}
.code-bar{
  display:flex;align-items:center;gap:7px;padding:12px 16px;
  border-bottom:1px solid var(--line);background:rgba(255,255,255,.02);
}
.dot{width:10px;height:10px;border-radius:50%;display:inline-block}
.dot.r{background:#ff5f57}.dot.y{background:#febc2e}.dot.g{background:#28c840}
.code-file{margin-left:8px;font-family:var(--ff-mono);font-size:.74rem;color:var(--muted)}
.code-body{
  margin:0;padding:18px 18px 14px;overflow-x:auto;
  font-family:var(--ff-mono);font-size:.79rem;line-height:1.85;color:#c3cde0;
}
.c-k{color:#7fd1ff}.c-f{color:#c89bff}.c-s{color:#ffd79a}.c-ok{color:var(--accent)}
.code-foot{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 16px;border-top:1px solid var(--line);background:rgba(255,255,255,.02);
}
.live{display:inline-flex;align-items:center;gap:8px;font-family:var(--ff-mono);font-size:.74rem;color:var(--accent)}
.live i{width:7px;height:7px;border-radius:50%;background:var(--accent);animation:pulse 1.6s infinite}

.float-chip{
  position:absolute;padding:7px 14px;border-radius:999px;
  font-family:var(--ff-mono);font-size:.72rem;font-weight:600;color:var(--text);
  background:rgba(12,17,30,.9);border:1px solid var(--line-strong);
  backdrop-filter:blur(8px);box-shadow:0 10px 24px -14px rgba(0,0,0,.9);
}
.chip-1{top:-14px;right:22px;animation:floaty 6s ease-in-out infinite .4s}
.chip-2{bottom:34px;left:-18px;animation:floaty 6.6s ease-in-out infinite .9s}
.chip-3{top:44%;right:-16px;animation:floaty 7.4s ease-in-out infinite 1.4s}

@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.8)}}

/* ---------- Stats ---------- */
.stats{padding:10px 0 4px}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
}
.stat{
  display:flex;flex-direction:column;gap:2px;align-items:center;text-align:center;
  padding:22px 14px;background:rgba(10,14,26,.72);
}
.stat strong{
  font-size:clamp(1.3rem,2.6vw,1.75rem);font-weight:700;letter-spacing:-.02em;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat span{font-size:.84rem;color:var(--muted)}

/* ---------- Sections ---------- */
.section{padding:clamp(60px,8vw,104px) 0}
.section-tight{padding:clamp(44px,6vw,72px) 0}
.section-head{max-width:620px;margin-bottom:clamp(32px,4vw,48px)}
.section-head h2{font-size:clamp(1.65rem,3.4vw,2.35rem)}
.section-head p{color:var(--muted);margin-top:14px}

/* ---------- Service cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{
  position:relative;padding:26px 24px 24px;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--line);
  transition:transform .22s ease, border-color .22s ease, background .22s ease;
  overflow:hidden;
}
.card::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(420px 220px at var(--mx,50%) var(--my,0%), rgba(56,232,200,.10), transparent 70%);
  opacity:0;transition:opacity .25s;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--surface-2)}
.card:hover::after{opacity:1}
.card-ico{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg, rgba(56,232,200,.16), rgba(79,124,255,.16));
  border:1px solid var(--line-strong);margin-bottom:16px;
}
.card-ico svg{width:22px;height:22px;fill:none;stroke:var(--accent);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:1.06rem;margin-bottom:9px}
.card p{color:var(--muted);font-size:.93rem}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:16px}
.tags li{
  font-family:var(--ff-mono);font-size:.68rem;padding:4px 9px;border-radius:999px;
  color:var(--muted);background:rgba(255,255,255,.04);border:1px solid var(--line);
}

/* ---------- Marquee ---------- */
.marquee{
  position:relative;overflow:hidden;padding:4px 0;
  mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);
}
.marquee-track{display:flex;gap:12px;width:max-content;animation:scroll 42s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-track span{
  padding:10px 20px;border-radius:999px;white-space:nowrap;
  font-family:var(--ff-mono);font-size:.82rem;color:var(--muted);
  background:var(--surface);border:1px solid var(--line);
}
@keyframes scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:s}
.step{
  padding:24px 22px;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--line);
  position:relative;transition:transform .22s, border-color .22s;
}
.step:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.step-no{
  display:block;font-family:var(--ff-mono);font-size:1.5rem;font-weight:700;margin-bottom:12px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.step h3{font-size:1rem;margin-bottom:8px}
.step p{color:var(--muted);font-size:.9rem}

/* ---------- Why ---------- */
.why-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(30px,5vw,60px);align-items:start}
.why-copy h2{font-size:clamp(1.6rem,3.2vw,2.2rem)}
.why-copy p{color:var(--muted);margin:14px 0 26px}
.why-list{display:grid;gap:14px}
.why-list li{
  padding:20px 22px;border-radius:var(--radius-sm);
  background:var(--surface);border:1px solid var(--line);
  border-left:2px solid var(--accent);
  transition:background .2s, transform .2s;
}
.why-list li:hover{background:var(--surface-2);transform:translateX(3px)}
.why-list h3{font-size:1rem;margin-bottom:5px}
.why-list p{color:var(--muted);font-size:.92rem;margin:0}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,56px);align-items:start}
.contact-info h2{font-size:clamp(1.6rem,3.2vw,2.2rem)}
.contact-info p{color:var(--muted);margin-top:14px}
.contact-list{margin-top:30px;display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
.contact-list li{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:8px;
  padding:16px 18px;background:rgba(10,14,26,.72);font-size:.94rem;
}
.ci-label{color:var(--muted);font-size:.84rem}
.contact-list a{color:var(--accent);font-weight:600;border-bottom:1px solid transparent;transition:border-color .2s}
.contact-list a:hover{border-bottom-color:var(--accent)}

.contact-form{
  padding:clamp(22px,3vw,30px);border-radius:var(--radius);
  background:linear-gradient(170deg, rgba(16,22,38,.7), rgba(8,11,20,.7));
  border:1px solid var(--line);display:grid;gap:16px;
}
.field{display:grid;gap:7px}
.field label{font-size:.86rem;font-weight:600;color:var(--text)}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text);font:inherit;font-size:.94rem;
  transition:border-color .2s, background .2s;
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 15px) 50%;background-size:5px 5px,5px 5px;background-repeat:no-repeat;cursor:pointer}
.field select option{background:#0a0e1a;color:var(--text)}
.field textarea{resize:vertical;min-height:110px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);background:rgba(255,255,255,.06);
}
.err{display:none;color:#ff8a8a;font-size:.8rem}
.field.invalid input,.field.invalid textarea{border-color:#ff8a8a}
.field.invalid .err{display:block}
.form-note{color:var(--muted);font-size:.8rem;text-align:center}
.form-ok{display:none;color:var(--accent);font-size:.86rem;text-align:center}
.form-ok.show{display:block}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);margin-top:20px;background:rgba(6,8,15,.6)}
.footer-inner{display:flex;flex-wrap:wrap;gap:26px;justify-content:space-between;padding-block:40px}
.footer-brand p{color:var(--muted);font-size:.9rem;margin-top:10px}
.footer-nav{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center}
.footer-nav a{color:var(--muted);font-size:.92rem;transition:color .18s}
.footer-nav a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  padding-block:18px;border-top:1px solid var(--line);color:var(--muted);font-size:.84rem;
}

/* ---------- To top ---------- */
.to-top{
  position:fixed;right:20px;bottom:20px;z-index:90;
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  background:var(--surface-2);border:1px solid var(--line-strong);
  backdrop-filter:blur(10px);color:var(--text);font-size:1.1rem;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s, transform .25s, visibility .25s, border-color .2s;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease, transform .6s ease}
.reveal.visible{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1000px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .hero-visual{order:2;max-width:560px}
  .why-grid,.contact-grid{grid-template-columns:1fr}
}

@media (max-width:860px){
  .nav{
    position:fixed;inset:68px 0 auto;margin:0;
    flex-direction:column;gap:2px;padding:16px 22px 24px;
    background:rgba(6,8,15,.97);backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    transform:translateY(-130%);transition:transform .3s ease;
  }
  .nav.open{transform:translateY(0)}
  .nav a{padding:13px 14px;font-size:1rem;border-radius:var(--radius-sm)}
  .nav-toggle{display:flex}
  .header-cta{display:none}
  .header-inner{gap:12px}
}

@media (max-width:620px){
  .container{padding-inline:18px}
  .cards,.steps{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .float-chip{display:none}
  .hero-cta .btn{flex:1 1 100%}
  .footer-inner{flex-direction:column;gap:20px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
}