/* OTG Solutions — styles. Change brand colors here. */
:root {
  --bg: #070b14;
  --bg-alt: #0b1220;
  --surface: #0f1a2e;
  --border: #1c2a44;
  --text: #e6edf7;
  --muted: #93a3bd;
  --accent: #22d3ee;      /* primary brand color */
  --accent-2: #3b82f6;    /* secondary brand color */
  --accent-ink: #04111a;
  --radius: 14px;
  --maxw: 1160px;
  --font: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font); line-height: 1.6; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 .5em; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
p { margin: 0 0 1em; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: .5rem; padding: .85rem 1.4rem; border-radius: 10px; font-weight: 600; font-size: .95rem; border: 1px solid transparent; cursor: pointer; transition: transform .15s, background .2s, border-color .2s, box-shadow .2s; font-family: inherit; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: var(--accent-ink); box-shadow: 0 8px 30px -10px var(--accent); }
.btn-ghost { border-color: var(--border); color: var(--text); background: rgba(255,255,255,.02); }
.btn-ghost:hover { border-color: var(--accent); }
.btn-sm { padding: .55rem 1rem; font-size: .875rem; }

/* Nav */
.nav { position: sticky; top: 0; z-index: 50; background: rgba(7,11,20,.75); backdrop-filter: blur(12px); border-bottom: 1px solid transparent; transition: border-color .2s; }
.nav.scrolled { border-bottom-color: var(--border); }
.nav-inner { display: flex; align-items: center; gap: 2rem; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: .6rem; font-weight: 800; font-size: 1.1rem; letter-spacing: -.01em; }
.nav-links { display: flex; gap: 1.75rem; margin-left: auto; }
.nav-links a { color: var(--muted); font-size: .92rem; font-weight: 500; transition: color .2s; }
.nav-links a:hover { color: var(--text); }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; margin-left: auto; }
.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 64px; }
.hero-grid { position: absolute; inset: 0; background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px); background-size: 56px 56px; opacity: .35; mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%); }
.hero::before { content: ""; position: absolute; width: 700px; height: 700px; left: 50%; top: -300px; transform: translateX(-50%); background: radial-gradient(circle, rgba(34,211,238,.18), transparent 65%); pointer-events: none; }
.hero-inner { position: relative; text-align: center; max-width: 860px; }
.eyebrow { display: inline-block; font-family: var(--mono); font-size: .78rem; color: var(--accent); border: 1px solid rgba(34,211,238,.3); background: rgba(34,211,238,.06); padding: .4rem .9rem; border-radius: 999px; margin-bottom: 1.5rem; }
.hero h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); font-weight: 800; background: linear-gradient(180deg, #fff, #b9c6db); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: clamp(1.05rem, 1.8vw, 1.25rem); color: var(--muted); max-width: 680px; margin: 0 auto 2rem; }
.hero-ctas { display: flex; gap: .75rem; justify-content: center; flex-wrap: wrap; }
.stats { position: relative; list-style: none; padding: 0; margin: 72px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--border); border-radius: var(--radius); background: rgba(15,26,46,.6); }
.stats li { padding: 1.4rem 1.2rem; text-align: center; }
.stats li + li { border-left: 1px solid var(--border); }
.stats strong { display: block; font-size: 1.35rem; font-weight: 700; color: var(--text); }
.stats span { font-size: .85rem; color: var(--muted); }

/* Sections */
.section { padding: 96px 0; }
.section.alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head p:last-child { color: var(--muted); font-size: 1.05rem; }
.kicker { font-family: var(--mono); font-size: .8rem; color: var(--accent); margin-bottom: .75rem; letter-spacing: .02em; }

/* Service cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; transition: border-color .2s, transform .2s; }
.card:hover { border-color: rgba(34,211,238,.45); transform: translateY(-3px); }
.icon { width: 44px; height: 44px; border-radius: 10px; display: grid; place-items: center; background: rgba(34,211,238,.1); color: var(--accent); margin-bottom: 18px; }
.icon svg { width: 22px; height: 22px; }
.card h3 { font-size: 1.15rem; }
.card p { color: var(--muted); font-size: .95rem; }
.card ul { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--border); padding-top: 14px; }
.card li { font-size: .88rem; color: var(--text); padding: 4px 0 4px 20px; position: relative; }
.card li::before { content: ""; position: absolute; left: 0; top: 12px; width: 8px; height: 2px; background: var(--accent); }

/* Steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.steps li { position: relative; padding: 28px 24px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); counter-increment: step; }
.steps li::before { content: "0" counter(step); font-family: var(--mono); font-size: .85rem; color: var(--accent); display: block; margin-bottom: 14px; }
.steps h3 { font-size: 1.1rem; }
.steps p { color: var(--muted); font-size: .93rem; margin: 0; }

/* Case studies */
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case { border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; background: linear-gradient(180deg, var(--surface), var(--bg)); display: flex; flex-direction: column; }
.tag { align-self: flex-start; font-family: var(--mono); font-size: .72rem; color: var(--accent); border: 1px solid rgba(34,211,238,.3); border-radius: 999px; padding: .2rem .7rem; margin-bottom: 16px; }
.case h3 { font-size: 1.15rem; margin-bottom: 1rem; }
.case dl { margin: 0; display: grid; gap: 12px; }
.case dt { font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); font-weight: 600; }
.case dd { margin: 2px 0 0; font-size: .93rem; }

/* About */
.about { display: grid; grid-template-columns: 340px 1fr; gap: 64px; align-items: center; }
.about-card { border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; text-align: center; background: var(--surface); }
.avatar { width: 120px; height: 120px; border-radius: 50%; margin: 0 auto 20px; display: grid; place-items: center; font-size: 2.2rem; font-weight: 800; color: var(--accent-ink); background: linear-gradient(135deg, var(--accent), var(--accent-2)); overflow: hidden; }
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.about-card h3 { margin-bottom: .2rem; }
.chips { list-style: none; padding: 0; margin: 20px 0 0; display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.chips li { font-size: .78rem; font-family: var(--mono); padding: .3rem .7rem; border-radius: 999px; background: rgba(59,130,246,.12); border: 1px solid rgba(59,130,246,.3); }
.prose p { color: var(--muted); font-size: 1.08rem; }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; }
.contact-list { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 14px; }
.contact-list li { display: flex; align-items: center; gap: 12px; }
.contact-list svg { width: 18px; height: 18px; color: var(--accent); flex: none; }
.contact-list a:hover { color: var(--accent); }
.form { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; display: grid; gap: 16px; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form label { display: grid; gap: 6px; font-size: .85rem; font-weight: 500; color: var(--muted); }
.form input, .form select, .form textarea { width: 100%; font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: .75rem .9rem; transition: border-color .2s, box-shadow .2s; }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(34,211,238,.15); }
.form button { justify-self: start; }
.form-status { margin: 0; font-size: .9rem; min-height: 1.2em; }
.form-status.ok { color: #34d399; }
.form-status.err { color: #f87171; }
.hp { position: absolute; left: -9999px; }

/* Footer */
.footer { border-top: 1px solid var(--border); padding: 40px 0; }
.footer-inner { display: flex; justify-content: space-between; gap: 32px; align-items: flex-end; flex-wrap: wrap; }
.footer p { margin: .5rem 0 0; max-width: 520px; }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }

/* Responsive */
@media (max-width: 960px) {
  .cards, .cases { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .about, .contact { grid-template-columns: 1fr; gap: 40px; }
  .about-card { max-width: 420px; }
}
@media (max-width: 760px) {
  .nav-links { position: fixed; inset: 68px 0 auto 0; flex-direction: column; gap: 0; background: var(--bg); border-bottom: 1px solid var(--border); padding: 8px 24px 16px; display: none; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; font-size: 1rem; }
  .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .hero { padding: 80px 0 48px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stats li:nth-child(3) { border-left: 0; }
  .stats li:nth-child(n+3) { border-top: 1px solid var(--border); }
  .cards, .cases, .steps, .form .row { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }
  .container { padding: 0 16px; }
  .form { padding: 22px; }
}