/* ===== NeoHelix AI Automation — design tokens ===== */
:root {
  --bg: #000000;
  --bg-elevated: #0a0a0a;
  --card: #161616;
  --card-border: rgba(255,255,255,.08);
  --text: #ffffff;
  --text-secondary: #b7b7b7;
  --accent: #cff85e;
  --accent-dim: rgba(207,248,94,.12);
  --accent-text: #0a0f00;
  --radius: 18px;
  --radius-sm: 10px;
  --max-width: 1160px;
  --font: 'Golos Text', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.wrap-narrow { max-width: 760px; }

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

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

h1, h2, h3 { font-weight: 700; margin: 0; letter-spacing: -0.02em; }

/* faint drifting grid backdrop */
.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}

/* ===== buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px; font-weight: 600; text-align: center;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  border: 1px solid transparent; cursor: pointer;
  font-family: var(--font);
}
.btn-lg { padding: 15px 30px; font-size: 16px; }
.btn-sm { padding: 9px 18px; font-size: 14px; }
.btn-accent { background: var(--accent); color: var(--accent-text); }
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 8px 24px var(--accent-dim); }
.btn-ghost { background: transparent; color: var(--text); border-color: rgba(255,255,255,.2); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ===== header ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(0,0,0,.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--card-border);
}
.header-inner { display: flex; align-items: center; gap: 28px; height: 76px; }
.logo { font-size: 20px; font-weight: 800; letter-spacing: -0.02em; white-space: nowrap; }
.nav { display: flex; gap: 24px; margin-left: 12px; flex: 1; }
.nav a { font-size: 14.5px; color: var(--text-secondary); transition: color .15s ease; }
.nav a:hover { color: var(--text); }
.header-cta { white-space: nowrap; }
.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px; background: none; border: 1px solid var(--card-border);
  border-radius: 10px; margin-left: 8px; cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; width: 18px; margin: 0 auto; background: var(--text); border-radius: 2px; }

/* ===== hero ===== */
.hero { position: relative; padding: 100px 0 80px; z-index: 1; }
.hero-inner { text-align: center; }
.eyebrow, .section-eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 18px;
}
.hero h1 { font-size: clamp(40px, 6vw, 74px); line-height: 1.04; margin-bottom: 24px; }
.hero-sub {
  font-size: 19px; color: var(--text-secondary); max-width: 640px; margin: 0 auto 36px;
}
.hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 64px; }

.hero-badges { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; max-width: 860px; margin: 0 auto; }
.badge-card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius);
  padding: 22px 18px; text-align: left;
}
.badge-num { display: block; font-size: 30px; font-weight: 800; color: var(--accent); margin-bottom: 6px; }
.badge-label { font-size: 13.5px; color: var(--text-secondary); line-height: 1.4; }

/* ===== generic section ===== */
.section { position: relative; z-index: 1; padding: 96px 0; }
.section-alt { background: var(--bg-elevated); border-top: 1px solid var(--card-border); border-bottom: 1px solid var(--card-border); }
.section-title { font-size: clamp(30px, 4vw, 44px); margin-bottom: 18px; }
.section-lead { font-size: 17px; color: var(--text-secondary); max-width: 620px; margin-bottom: 48px; }

/* ===== team ===== */
.team-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.team-card { background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius); padding: 32px; }
.avatar-mark { width: 56px; height: 56px; color: var(--accent); margin-bottom: 20px; }
.avatar-mark svg { width: 100%; height: 100%; }
.team-card h3 { font-size: 21px; margin-bottom: 6px; }
.team-role { color: var(--accent); font-size: 14px; font-weight: 600; margin: 0 0 14px; }
.team-desc { color: var(--text-secondary); font-size: 15px; margin: 0; }

/* ===== stack ===== */
.stack-group { margin-bottom: 32px; }
.stack-label { display: block; font-size: 13px; font-weight: 700; color: var(--text-secondary); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 14px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  padding: 10px 18px; border: 1px solid var(--card-border); border-radius: 999px;
  font-size: 14.5px; font-weight: 600; background: var(--card); color: var(--text);
  transition: border-color .15s ease, color .15s ease;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }

/* ===== services ===== */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.service-card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius);
  padding: 28px; display: flex; flex-direction: column; transition: transform .2s ease, border-color .2s ease;
}
.service-card:hover { transform: translateY(-4px); border-color: rgba(207,248,94,.35); }
.service-num { font-size: 13px; font-weight: 800; color: var(--accent); letter-spacing: .05em; margin-bottom: 14px; }
.service-card h3 { font-size: 19px; margin-bottom: 10px; }
.service-card p { color: var(--text-secondary); font-size: 14.5px; flex: 1; margin: 0 0 18px; }
.service-price { font-size: 14px; font-weight: 700; color: var(--text); padding-top: 14px; border-top: 1px solid var(--card-border); }

/* ===== portfolio ===== */
.portfolio-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.portfolio-card { background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius); overflow: hidden; transition: transform .2s ease; }
.portfolio-card:hover { transform: translateY(-4px); }
.portfolio-visual {
  height: 168px; padding: 18px; display: flex; flex-direction: column; gap: 14px;
  background: linear-gradient(155deg, #101a06, #0a0a0a 60%);
  border-bottom: 1px solid var(--card-border);
}
.portfolio-visual[data-tone="b"] { background: linear-gradient(155deg, #0a1a18, #0a0a0a 60%); }
.portfolio-visual[data-tone="c"] { background: linear-gradient(155deg, #140a1a, #0a0a0a 60%); }
.pv-window { display: flex; gap: 6px; }
.pv-window span { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,.18); }
.pv-lines { display: flex; flex-direction: column; gap: 8px; flex: 1; justify-content: center; }
.pv-lines i { display: block; height: 6px; border-radius: 4px; background: rgba(207,248,94,.35); width: 90%; }
.pv-lines i:nth-child(2) { width: 70%; background: rgba(255,255,255,.14); }
.pv-lines i:nth-child(3) { width: 80%; background: rgba(255,255,255,.14); }
.pv-chart { display: flex; align-items: flex-end; gap: 6px; flex: 1; }
.pv-chart i { flex: 1; background: rgba(207,248,94,.4); border-radius: 3px 3px 0 0; }
.pv-chart i:nth-child(1){height:35%} .pv-chart i:nth-child(2){height:55%} .pv-chart i:nth-child(3){height:40%} .pv-chart i:nth-child(4){height:75%} .pv-chart i:nth-child(5){height:60%}
.pv-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 6px; flex: 1; }
.pv-grid i { border-radius: 4px; background: rgba(207,248,94,.22); }
.pv-grid i:nth-child(3n+1) { background: rgba(207,248,94,.4); }
.portfolio-body { padding: 22px 24px 26px; }
.portfolio-tag { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--accent); }
.portfolio-body h3 { font-size: 20px; margin: 8px 0 10px; }
.portfolio-body p { color: var(--text-secondary); font-size: 14.5px; margin: 0; }

/* ===== process ===== */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.process-card { padding: 24px 4px; border-top: 2px solid var(--accent); }
.process-num { display: block; font-size: 28px; font-weight: 800; color: var(--text-secondary); opacity: .5; margin-bottom: 14px; }
.process-card h3 { font-size: 18px; margin-bottom: 8px; }
.process-card p { color: var(--text-secondary); font-size: 14.5px; margin: 0; }

/* ===== pricing ===== */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: start; }
.pricing-card { background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius); padding: 32px; position: relative; }
.pricing-card-accent { border-color: var(--accent); background: linear-gradient(160deg, rgba(207,248,94,.08), var(--card) 55%); }
.pricing-badge {
  position: absolute; top: -13px; left: 32px; background: var(--accent); color: var(--accent-text);
  font-size: 12px; font-weight: 700; padding: 5px 12px; border-radius: 999px;
}
.pricing-card h3 { font-size: 20px; margin-bottom: 10px; }
.pricing-price { font-size: 30px; font-weight: 800; margin: 0 0 12px; }
.pricing-desc { color: var(--text-secondary); font-size: 14.5px; margin: 0 0 20px; }
.pricing-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.pricing-list li { font-size: 14.5px; color: var(--text); padding-left: 22px; position: relative; }
.pricing-list li::before { content: '→'; position: absolute; left: 0; color: var(--accent); }

/* ===== faq ===== */
.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item { background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius-sm); overflow: hidden; }
.faq-q {
  width: 100%; text-align: left; background: none; border: none; color: var(--text);
  font-family: var(--font); font-size: 16px; font-weight: 600; padding: 20px 22px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px; cursor: pointer;
}
.faq-icon { font-size: 20px; color: var(--accent); transition: transform .2s ease; flex-shrink: 0; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .25s ease; }
.faq-item.open .faq-a { max-height: 240px; }
.faq-a p { margin: 0 22px 20px; color: var(--text-secondary); font-size: 14.5px; }

/* ===== contact ===== */
.section-contact { text-align: center; }
.section-contact .section-eyebrow, .section-contact .section-title, .section-contact .section-lead { margin-left: auto; margin-right: auto; }
.contact-form { text-align: left; display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form label { display: flex; flex-direction: column; gap: 8px; font-size: 14px; font-weight: 600; color: var(--text-secondary); }
.opt { font-weight: 400; text-transform: none; letter-spacing: 0; }
.contact-form input, .contact-form textarea {
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius-sm);
  padding: 13px 16px; color: var(--text); font-family: var(--font); font-size: 15px; resize: vertical;
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--accent); }
.contact-form .btn { align-self: flex-start; margin-top: 4px; }
.form-note { font-size: 13px; color: var(--text-secondary); opacity: .8; margin: 4px 0 0; }

/* ===== footer ===== */
.site-footer { border-top: 1px solid var(--card-border); padding: 56px 0 28px; position: relative; z-index: 1; }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 32px; margin-bottom: 40px; }
.footer-tagline { color: var(--text-secondary); font-size: 14px; margin: 10px 0 0; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 20px; }
.footer-nav a { font-size: 14px; color: var(--text-secondary); }
.footer-nav a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--card-border); padding-top: 22px; font-size: 13px; color: var(--text-secondary); }

/* ===== scroll reveal ===== */
.rv { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.rv.in { opacity: 1; transform: translateY(0); }

/* ===== responsive ===== */
@media (max-width: 960px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .portfolio-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; }
  .hero-badges { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav { display: none; }
  .nav-toggle { display: flex; }
  .header-cta { display: none; }
  .site-header.open .nav {
    display: flex; flex-direction: column; position: absolute; top: 76px; left: 0; right: 0;
    background: var(--bg); padding: 20px 24px 28px; border-bottom: 1px solid var(--card-border);
  }
  .team-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 56px; }
  .section { padding: 64px 0; }
}