:root {
  --bg: #0b0d17;
  --bg-alt: #10131f;
  --surface: #151929;
  --border: #252a3d;
  --text: #e8eaf2;
  --muted: #9aa1b8;
  --accent: #6366f1;
  --accent-2: #22d3ee;
  --radius: 16px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.container { width: min(1120px, 100% - 40px); margin-inline: auto; }

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 16px; }
h3 { font-size: 1.15rem; margin-bottom: 8px; }

.eyebrow {
  color: var(--accent-2);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.grad {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  color: #fff;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s, opacity .2s;
  font-family: inherit;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 30px -10px var(--accent); }
.btn:disabled { opacity: .6; cursor: wait; transform: none; }
.btn-sm { padding: 9px 18px; font-size: 0.875rem; }
.btn-ghost { background: transparent; border-color: var(--border); }
.btn-ghost:hover { border-color: var(--muted); box-shadow: none; }
.btn-block { width: 100%; }

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 13, 23, 0.75);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.1rem; }
.logo small { color: var(--muted); font-weight: 500; font-size: 0.75rem; }
.logo-mark {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  font-weight: 800;
}
.nav-links { display: flex; align-items: center; gap: 28px; font-size: 0.95rem; }
.nav-links a:not(.btn) { color: var(--muted); transition: color .2s; }
.nav-links a:not(.btn):hover { color: var(--text); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; transition: transform .2s; }

/* Hero */
.hero { position: relative; overflow: hidden; padding: 120px 0 100px; text-align: center; }
.hero-glow {
  position: absolute; inset: -40% -10% auto;
  height: 700px;
  background:
    radial-gradient(closest-side at 35% 50%, rgba(99, 102, 241, .35), transparent),
    radial-gradient(closest-side at 65% 50%, rgba(34, 211, 238, .2), transparent);
  filter: blur(40px);
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 860px; }
.hero h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); font-weight: 800; margin-bottom: 22px; }
.lead { font-size: clamp(1.05rem, 2vw, 1.25rem); color: var(--muted); max-width: 640px; margin: 0 auto 36px; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-tags { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 56px; }
.hero-tags li {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--muted);
  background: rgba(21, 25, 41, .6);
}

/* Sections */
.section { padding: 100px 0; }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head p:not(.eyebrow) { color: var(--muted); }

/* Service cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  transition: transform .25s, border-color .25s;
}
.card:hover { transform: translateY(-4px); border-color: rgba(99, 102, 241, .6); }
.card p { color: var(--muted); font-size: 0.95rem; }
.icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: rgba(99, 102, 241, .14);
  margin-bottom: 20px;
}
.icon svg, .email-link svg {
  width: 24px; height: 24px;
  fill: none;
  stroke: var(--accent-2);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Process */
.steps { list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.steps li { padding: 28px; border-left: 2px solid var(--border); }
.steps p { color: var(--muted); font-size: 0.95rem; }
.step-num { display: block; font-size: 2rem; font-weight: 800; margin-bottom: 10px; color: var(--accent); }

/* About */
.about { display: grid; grid-template-columns: 1.2fr 1fr; gap: 64px; align-items: center; }
.about p:not(.eyebrow) { color: var(--muted); margin-bottom: 16px; }
.perks { list-style: none; display: grid; gap: 14px; }
.perks li {
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.perks strong { display: block; margin-bottom: 2px; }
.perks span { color: var(--muted); font-size: 0.92rem; }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: start; }
.contact-info p:not(.eyebrow) { color: var(--muted); margin-bottom: 28px; }
.email-link {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 14px 20px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  font-weight: 500;
  word-break: break-all;
  transition: border-color .2s;
}
.email-link:hover { border-color: var(--accent); }

.contact-form {
  display: grid; gap: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-form label { display: grid; gap: 6px; }
.contact-form label span { font-size: 0.875rem; font-weight: 500; color: var(--muted); }
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font: inherit;
  font-size: 0.95rem;
  transition: border-color .2s, box-shadow .2s;
}
.contact-form textarea { resize: vertical; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, .25);
}
.contact-form .invalid { border-color: #f87171; }
.hp { position: absolute; left: -9999px; }
.form-status { font-size: 0.92rem; min-height: 1.4em; text-align: center; }
.form-status.ok { color: #4ade80; }
.form-status.err { color: #f87171; }

/* Footer */
.footer { padding: 32px 0; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.9rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer a:hover { color: var(--text); }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* Responsive */
@media (max-width: 860px) {
  .about, .contact { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 720px) {
  .container { width: calc(100% - 32px); }
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 8px 16px 20px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a:not(.btn) { padding: 12px 0; }
  .nav-links .btn { margin-top: 8px; }
  .nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .hero { padding: 80px 0 70px; }
  .section { padding: 72px 0; }
  .field-row { grid-template-columns: 1fr; }
  .contact-form { padding: 22px; }
  .cards { grid-template-columns: 1fr; }
}