/* ==========================================================================
   NovaTech — design tokens
   Sober software-engineering identity. Cool paper background, steel-blue
   accent, monospace used as the "engineering" voice for labels & the
   terminal signature element. Dark is used only inside that one element,
   never as the page base — keeps the page sober instead of the usual
   near-black + neon-accent AI default.
   ========================================================================== */

:root {
  --bg: #F5F6F8;
  --bg-alt: #ECEEF2;
  --ink: #12161C;
  --ink-soft: #4A5568;
  --ink-faint: #7A8494;
  --accent: #2B5876;
  --accent-soft: #7FA6BF;
  --accent-tint: #E4ECF1;
  --line: #D8DCE1;
  --mono-bg: #12161C;
  --mono-text: #E7EAEE;
  --mono-accent: #7FD1C9;

  --font-display: "Space Grotesk", "Inter", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;

  --maxw: 1120px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

/* -------------------- Nav -------------------- */
header.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245, 246, 248, 0.86);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  max-width: var(--maxw);
  margin: 0 auto;
}

.logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.logo .dot { color: var(--accent); }

nav.links {
  display: flex;
  align-items: center;
  gap: 28px;
}

nav.links a {
  font-size: 0.92rem;
  color: var(--ink-soft);
  transition: color 0.15s ease;
}

nav.links a:hover, nav.links a:focus-visible { color: var(--ink); }

.langs {
  display: flex;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-faint);
}

.langs a { padding: 2px 4px; border-radius: 4px; }
.langs a[aria-current="true"] { color: var(--accent); font-weight: 600; }
.langs a:hover, .langs a:focus-visible { color: var(--accent); background: var(--accent-tint); }

.nav-toggle { display: none; }

@media (max-width: 760px) {
  nav.links { display: none; }
  .nav-toggle { display: block; }
}

/* -------------------- Hero -------------------- */
.hero {
  position: relative;
  padding: 96px 0 88px;
  overflow: hidden;
}

.blueprint-grid {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, black, transparent 85%);
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  align-items: center;
}

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; }
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
}

.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}

h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4.2vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 22px;
}

.hero p.lede {
  font-size: 1.08rem;
  color: var(--ink-soft);
  max-width: 46ch;
  margin: 0 0 32px;
}

.cta-row { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 13px 24px;
  border-radius: 6px;
  font-size: 0.94rem;
  font-weight: 500;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover, .btn-primary:focus-visible { background: var(--accent); transform: translateY(-1px); }

.btn-ghost { border-color: var(--line); color: var(--ink); }
.btn-ghost:hover, .btn-ghost:focus-visible { border-color: var(--accent); color: var(--accent); }

/* -------------------- Terminal signature -------------------- */
.terminal {
  background: var(--mono-bg);
  color: var(--mono-text);
  border-radius: 10px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  box-shadow: 0 24px 48px -20px rgba(18, 22, 28, 0.45);
  overflow: hidden;
}

.terminal-bar {
  display: flex;
  gap: 6px;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.terminal-bar span {
  width: 9px; height: 9px; border-radius: 50%;
  background: rgba(255,255,255,0.16);
}

.terminal-body { padding: 20px 22px 24px; }
.terminal-body .line { margin: 0 0 9px; white-space: pre-wrap; }
.terminal-body .prompt { color: var(--mono-accent); }
.terminal-body .ok { color: var(--mono-accent); }
.terminal-body .cursor {
  display: inline-block;
  width: 7px; height: 15px;
  background: var(--mono-accent);
  margin-left: 2px;
  animation: blink 1.05s steps(1) infinite;
  vertical-align: text-bottom;
}

@keyframes blink { 50% { opacity: 0; } }

/* -------------------- Sections -------------------- */
section { padding: 84px 0; }
section.alt { background: var(--bg-alt); }

.section-head { max-width: 62ch; margin-bottom: 48px; }

h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  letter-spacing: -0.015em;
  margin: 0 0 14px;
}

.section-head p { color: var(--ink-soft); margin: 0; font-size: 1.02rem; }

/* -------------------- Services grid -------------------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}

@media (max-width: 700px) {
  .services-grid { grid-template-columns: 1fr; }
}

.service-card {
  background: var(--bg);
  padding: 32px 30px;
  transition: background 0.15s ease;
}

.service-card:hover { background: var(--accent-tint); }

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--accent);
  background: var(--accent-tint);
  padding: 3px 9px;
  border-radius: 4px;
  margin-bottom: 16px;
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0 0 10px;
}

.service-card p { color: var(--ink-soft); margin: 0; font-size: 0.96rem; }

/* -------------------- About -------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}

@media (max-width: 800px) {
  .about-grid { grid-template-columns: 1fr; }
}

.principles { list-style: none; margin: 0; padding: 0; }
.principles li {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}
.principles li:last-child { border-bottom: 1px solid var(--line); }

.principles .mark {
  font-family: var(--font-mono);
  color: var(--accent-soft);
  font-size: 0.85rem;
  padding-top: 2px;
}

.principles h4 { margin: 0 0 4px; font-size: 1rem; font-family: var(--font-display); }
.principles p { margin: 0; color: var(--ink-soft); font-size: 0.94rem; }

/* -------------------- Contact -------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}

@media (max-width: 800px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-info dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px 18px;
  font-size: 0.96rem;
  margin: 0;
}

.contact-info dt {
  font-family: var(--font-mono);
  color: var(--ink-faint);
  font-size: 0.82rem;
  padding-top: 2px;
}

.contact-info dd { margin: 0; color: var(--ink); }

form.contact-form { display: grid; gap: 14px; }

.field { display: grid; gap: 6px; }

.field label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
}

.field input, .field textarea {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  background: var(--bg);
  color: var(--ink);
}

.field input:focus-visible, .field textarea:focus-visible {
  outline: 2px solid var(--accent-soft);
  outline-offset: 1px;
}

.field textarea { resize: vertical; min-height: 110px; }

/* -------------------- Footer -------------------- */
footer {
  border-top: 1px solid var(--line);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--ink-faint);
}

.footer-inner .langs { font-size: 0.82rem; }

/* -------------------- Reveal on scroll -------------------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.in { opacity: 1; transform: translateY(0); }