/* ==========  Design tokens  ========== */
:root{
  --bg:#f7f8fc;
  --surface:#ffffff;
  --surface-2:#eef1f8;
  --ink:#0d1530;
  --ink-2:#3a4566;
  --muted:#6b7390;
  --border:#e3e7f1;
  --primary:#2d5bff;
  --primary-2:#7a3bff;
  --accent:#16d2c1;
  --shadow:0 20px 50px -20px rgba(45,91,255,.25);
  --shadow-sm:0 8px 24px -12px rgba(13,21,48,.18);
  --radius:18px;
  --radius-sm:12px;
  --container:1200px;
  --grad:linear-gradient(135deg,var(--primary) 0%,var(--primary-2) 100%);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{
  font-family:'Manrope',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:var(--bg);color:var(--ink);
  line-height:1.6;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ==========  Buttons  ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:14px 26px;border-radius:999px;font-weight:600;font-size:15px;
  transition:transform .2s ease,box-shadow .2s ease,opacity .2s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--grad);color:#fff;box-shadow:var(--shadow)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 24px 50px -18px rgba(45,91,255,.5)}
.btn--ghost{background:transparent;color:var(--ink);border:1.5px solid var(--border)}
.btn--ghost:hover{border-color:var(--ink);transform:translateY(-2px)}
.btn--block{width:100%}
.btn--sm{padding:10px 20px;font-size:14px}

.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.12em;
  text-transform:uppercase;color:var(--primary);
  background:rgba(45,91,255,.08);padding:6px 14px;border-radius:999px;margin-bottom:16px;
}

/* ==========  Header  ========== */
.header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:rgba(255,255,255,.78);backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;transition:border-color .25s,background .25s;
}
.header.is-scrolled{border-bottom-color:var(--border);background:rgba(255,255,255,.92)}
.header__inner{display:flex;align-items:center;justify-content:space-between;height:78px;gap:24px}

.logo{display:flex;align-items:center;gap:12px;font-weight:800;color:var(--ink)}
.logo__mark{
  width:42px;height:42px;display:grid;place-items:center;border-radius:12px;
  background:var(--grad);color:#fff;font-family:'JetBrains Mono',monospace;font-size:14px;
  box-shadow:var(--shadow-sm);
}
.logo__text{display:flex;flex-direction:column;line-height:1.1;font-size:16px}
.logo__text small{font-weight:500;color:var(--muted);font-size:11px;margin-top:3px}

.nav{display:flex;align-items:center;gap:8px}
.nav__link{padding:10px 14px;color:var(--ink-2);font-weight:500;font-size:15px;border-radius:10px;transition:color .2s,background .2s}
.nav__link:hover{color:var(--primary);background:var(--surface-2)}
.nav__cta{margin-left:8px}

.burger{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.burger span{width:22px;height:2px;background:var(--ink);border-radius:2px;transition:transform .3s,opacity .3s}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ==========  Hero  ========== */
.hero{
  position:relative;padding:160px 0 100px;overflow:hidden;
  background:
    radial-gradient(60% 80% at 85% 20%,rgba(122,59,255,.10),transparent 60%),
    radial-gradient(50% 60% at 10% 80%,rgba(22,210,193,.10),transparent 60%),
    var(--bg);
}
.hero__grid{display:grid;grid-template-columns:1.1fr 1fr;gap:60px;align-items:center}
.hero__content h1{
  font-size:clamp(36px,5vw,60px);line-height:1.05;letter-spacing:-.02em;
  font-weight:800;margin:8px 0 20px;
}
.hero__content h1::after{content:".";color:var(--primary)}
.hero__lead{font-size:19px;color:var(--ink-2);margin-bottom:14px}
.hero__content p{color:var(--ink-2);margin-bottom:14px;font-size:16px}
.stack{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:20px 0 28px;color:var(--muted)}
.stack span{
  font-family:'JetBrains Mono',monospace;font-size:13px;
  padding:6px 12px;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--ink);
}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px}

.hero__visual{position:relative;min-height:460px;display:flex;align-items:center;justify-content:center}
.hero__glow{
  position:absolute;inset:-20px;background:var(--grad);filter:blur(70px);opacity:.22;border-radius:50%;
}
.tagcloud{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;justify-content:center;align-items:center;
  gap:10px 12px;padding:30px;max-width:560px;
}
.tag{
  display:inline-block;background:var(--surface);border:1px solid var(--border);
  border-radius:999px;padding:8px 16px;font-family:'JetBrains Mono',monospace;
  color:var(--ink);box-shadow:var(--shadow-sm);
  animation:floatTag 6s ease-in-out infinite;
  transition:transform .25s ease, box-shadow .25s ease, color .25s ease;
}
.tag:hover{transform:translateY(-4px) scale(1.06);box-shadow:var(--shadow);color:var(--primary)}
.tag--sm{font-size:12px;opacity:.85}
.tag--md{font-size:14px}
.tag--lg{font-size:18px;font-weight:600}
.tag--xl{font-size:22px;font-weight:700;letter-spacing:-.01em}
.tag--primary{color:var(--primary);border-color:color-mix(in oklab,var(--primary) 35%,var(--border))}
.tag--accent{color:var(--accent);border-color:color-mix(in oklab,var(--accent) 35%,var(--border))}
.tag:nth-child(2n){animation-delay:.4s}
.tag:nth-child(3n){animation-delay:.8s}
.tag:nth-child(4n){animation-delay:1.2s}
.tag:nth-child(5n){animation-delay:1.6s}
.tag:nth-child(7n){animation-delay:2.1s}
@keyframes floatTag{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}

/* ==========  Sections  ========== */
.section{padding:100px 0;position:relative}
.section--alt{background:linear-gradient(180deg,var(--surface-2),var(--bg))}
.section__head{max-width:680px;margin:0 auto 56px;text-align:center}
.section__head h2{font-size:clamp(30px,3.4vw,44px);font-weight:800;letter-spacing:-.02em;margin-bottom:14px}
.section__head p{color:var(--muted);font-size:17px}

/* ==========  Cards / Services  ========== */
.grid{display:grid;gap:24px}
.grid--services{grid-template-columns:repeat(3,1fr)}
.card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:32px;transition:transform .3s,box-shadow .3s,border-color .3s;
  position:relative;overflow:hidden;
}
.card::before{
  content:"";position:absolute;inset:0 0 auto 0;height:3px;background:var(--grad);
  transform:scaleX(0);transform-origin:left;transition:transform .4s ease;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.card:hover::before{transform:scaleX(1)}
.card__icon{
  width:54px;height:54px;border-radius:14px;background:var(--surface-2);
  display:grid;place-items:center;font-size:26px;margin-bottom:18px;
}
.card h3{font-size:20px;margin-bottom:10px;font-weight:700}
.card p{color:var(--muted);font-size:15px}

/* ==========  Portfolio  ========== */
.grid--portfolio{grid-template-columns:repeat(3,1fr)}
.project{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:32px;display:flex;flex-direction:column;gap:14px;
  transition:transform .3s,box-shadow .3s;position:relative;overflow:hidden;
}
.project:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.project__num{
  font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--primary);font-weight:600;
}
.project h3{font-size:19px;font-weight:700;line-height:1.3}
.project p{color:var(--muted);font-size:14.5px;flex:1}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.tags span{
  font-size:12px;font-weight:600;padding:5px 11px;border-radius:999px;
  background:var(--surface-2);color:var(--ink-2);
}

/* ==========  Contacts / Form  ========== */
.contacts__grid{display:grid;grid-template-columns:1fr 1.1fr;gap:60px;align-items:start}
.contacts__intro h2{font-size:clamp(30px,3.4vw,44px);font-weight:800;letter-spacing:-.02em;margin-bottom:18px}
.contacts__intro p{color:var(--ink-2);font-size:17px;margin-bottom:24px}
.contacts__list{list-style:none;display:flex;flex-direction:column;gap:10px;color:var(--ink-2);font-size:15px}

.form{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:36px;box-shadow:var(--shadow-sm);
}
.field{display:flex;flex-direction:column;margin-bottom:18px}
.field label{font-size:14px;font-weight:600;margin-bottom:8px;color:var(--ink-2)}
.field label span{color:#e23a3a}
.field input,.field textarea{
  font:inherit;color:var(--ink);background:var(--bg);
  border:1.5px solid var(--border);border-radius:var(--radius-sm);
  padding:14px 16px;transition:border-color .2s,background .2s;
  width:100%;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary);background:#fff}
.field textarea{resize:vertical;min-height:120px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.hint{font-size:13px;color:var(--muted);margin:-6px 0 18px}

.field--file{position:relative}
.field--file input[type=file]{position:absolute;left:0;top:0;width:.1px;height:.1px;opacity:0}
.file-label{
  display:flex;justify-content:space-between;align-items:center;cursor:pointer;
  border:1.5px dashed var(--border);border-radius:var(--radius-sm);padding:16px;
  transition:border-color .2s,background .2s;
}
.file-label:hover{border-color:var(--primary);background:var(--surface-2)}
.file-label small{color:var(--muted);font-size:13px}

.checkbox{display:flex;gap:10px;align-items:flex-start;margin:8px 0 22px;font-size:14px;color:var(--ink-2);cursor:pointer}
.checkbox input{margin-top:3px;width:18px;height:18px;accent-color:var(--primary);flex-shrink:0}
.checkbox em{color:#e23a3a;font-style:normal}

.form__status{margin-top:16px;font-size:14px;font-weight:600;min-height:22px;text-align:center}
.form__status.is-success{color:#13a26b}
.form__status.is-error{color:#e23a3a}

/* ==========  Footer  ========== */
.footer{background:var(--ink);color:#cdd3e8;padding:50px 0 30px}
.footer__inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:30px;align-items:flex-start}
.logo--footer .logo__text{color:#fff;font-size:18px}
.footer__copy{margin-top:14px;font-size:14px;color:#8d97b8;line-height:1.6}
.footer__nav{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:14px;align-items:center}
.footer__nav a{color:#cdd3e8;transition:color .2s}
.footer__nav a:hover{color:#fff}

/* ==========  Cookie banner  ========== */
.cookie{
  position:fixed;left:20px;right:20px;bottom:20px;z-index:100;
  background:var(--ink);color:#fff;border-radius:var(--radius);
  padding:18px 22px;display:flex;align-items:center;gap:16px;
  box-shadow:0 30px 60px -20px rgba(0,0,0,.4);max-width:760px;margin:0 auto;
  animation:slideUp .4s ease;
}
.cookie p{font-size:14px;color:#cdd3e8;flex:1}
@keyframes slideUp{from{transform:translateY(40px);opacity:0}to{transform:translateY(0);opacity:1}}

/* ==========  Reveal on scroll  ========== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ==========  Responsive  ========== */
@media (max-width:960px){
  .grid--services,.grid--portfolio{grid-template-columns:repeat(2,1fr)}
  .hero{padding:130px 0 70px}
  .hero__grid,.contacts__grid{grid-template-columns:1fr;gap:50px}
  .hero__visual{order:-1;max-width:520px;margin:0 auto}
}
@media (max-width:760px){
  .nav{
    position:fixed;top:78px;left:0;right:0;background:#fff;
    flex-direction:column;align-items:stretch;padding:18px;gap:6px;
    border-bottom:1px solid var(--border);
    transform:translateY(-120%);transition:transform .3s ease;
    box-shadow:0 20px 40px -20px rgba(13,21,48,.2);
  }
  .nav.is-open{transform:translateY(0)}
  .nav__link{padding:14px 16px;font-size:16px}
  .nav__cta{margin:8px 0 0}
  .burger{display:flex}
  .logo__text small{display:none}
  .section{padding:70px 0}
  .grid--services,.grid--portfolio{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .form{padding:24px}
  .footer__inner{flex-direction:column}
  .tagcloud{padding:10px;gap:8px}
  .tag--xl{font-size:18px}
  .tag--lg{font-size:16px}
}