/* =================================================================
   OSS STAX — Static Corporate Site
   Corporate blue & white theme
   ================================================================= */

/* ---------- Reset & base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

:root {
  --bg-0: #ffffff;
  --bg-1: #f8fafc;
  --bg-2: #f1f5f9;
  --bg-3: #e2e8f0;
  --line: rgba(15, 23, 42, 0.09);
  --line-strong: rgba(15, 23, 42, 0.16);

  --text: #0c2545;
  --muted: #475569;
  --muted-2: #64748b;

  --accent: #1d4ed8;
  --accent-2: #3b82f6;
  --accent-dark: #0c2f8c;
  --accent-soft: rgba(29, 78, 216, 0.08);
  --accent-glow: rgba(29, 78, 216, 0.30);

  --ok: #16a34a;
  --warn: #d97706;

  --radius: 14px;
  --radius-sm: 10px;
  --shadow-1: 0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 0 rgba(255,255,255,0.5) inset;
  --shadow-2: 0 14px 40px rgba(15, 23, 42, 0.10), 0 2px 6px rgba(15, 23, 42, 0.05);
  --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.05), 0 1px 0 rgba(255,255,255,0.6) inset;

  --max: 1180px;
  --pad: clamp(20px, 4vw, 40px);

  --t-fast: 160ms ease;
  --t: 280ms cubic-bezier(.2,.7,.2,1);
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-0);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; transition: color var(--t-fast); }
a:hover { color: var(--accent); }

button { font-family: inherit; cursor: pointer; }

h1, h2, h3, h4, h5 { margin: 0 0 .5em; font-weight: 700; line-height: 1.2; letter-spacing: -0.01em; color: var(--text); }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 800; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; }
h5 { font-size: .9rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }

p  { margin: 0 0 1em; }
.muted { color: var(--muted); }

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

.eyebrow {
  display: inline-block;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(29, 78, 216, 0.18);
  margin-bottom: 18px;
}

.grad-text {
  background: linear-gradient(90deg, #1d4ed8 0%, #3b82f6 60%, #60a5fa 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 22px;
  font-weight: 600;
  font-size: .95rem;
  border-radius: 10px;
  border: 1px solid transparent;
  transition: transform var(--t-fast), box-shadow var(--t-fast), background var(--t-fast), color var(--t-fast);
  white-space: nowrap;
}
.btn-primary {
  color: #ffffff;
  background: linear-gradient(135deg, #1d4ed8, #3b82f6);
  box-shadow: 0 8px 22px -8px var(--accent-glow), 0 1px 0 rgba(255,255,255,.25) inset;
}
.btn-primary:hover { transform: translateY(-2px); color: #ffffff; box-shadow: 0 14px 30px -10px var(--accent-glow); }
.btn-ghost {
  color: var(--text);
  background: #ffffff;
  border-color: var(--line-strong);
}
.btn-ghost:hover { color: var(--accent); border-color: var(--accent); }
.btn.full { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.7);
  border-bottom: 1px solid transparent;
  transition: background var(--t), border-color var(--t), box-shadow var(--t);
}
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  border-bottom-color: var(--line);
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}

.nav-wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 70px; gap: 24px;
}

.logo {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--text);
}
.logo:hover { color: var(--text); }
.logo-img {
  display: block;
  height: 38px;
  width: auto;
  max-width: 200px;
}
.logo-img-sm { height: 30px; }
.logo-text { font-weight: 800; letter-spacing: -.01em; font-size: 1.1rem; }
.logo-text .accent { color: var(--accent); margin-left: 1px; }
.logo-mark { display: inline-flex; }

.primary-nav { display: flex; align-items: center; gap: 28px; }
.primary-nav ul {
  display: flex; gap: 26px;
  list-style: none; padding: 0; margin: 0;
}
.primary-nav a {
  font-size: .92rem; font-weight: 500; color: var(--muted);
  position: relative; padding: 6px 0;
}
.primary-nav a::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0;
  height: 2px; background: var(--accent); transform: scaleX(0);
  transform-origin: left; transition: transform var(--t);
}
.primary-nav a:hover,
.primary-nav a.active { color: var(--text); }
.primary-nav a:hover::after,
.primary-nav a.active::after { transform: scaleX(1); }
.nav-cta { padding: 10px 18px; font-size: .9rem; }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  background: transparent; border: 1px solid var(--line-strong);
  border-radius: 8px;
  position: relative;
}
.nav-toggle span {
  display: block; position: absolute;
  left: 10px; right: 10px; height: 2px;
  background: var(--text); border-radius: 2px;
  transition: transform var(--t-fast), opacity var(--t-fast), top var(--t-fast);
}
.nav-toggle span:nth-child(1) { top: 13px; }
.nav-toggle span:nth-child(2) { top: 20px; }
.nav-toggle span:nth-child(3) { top: 27px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { top: 20px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { top: 20px; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 140px 0 80px;
  overflow: hidden;
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(59, 130, 246, 0.18), transparent 60%),
    radial-gradient(900px 500px at 0% 30%, rgba(29, 78, 216, 0.10), transparent 60%),
    var(--bg-0);
}
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, black 30%, transparent 75%);
}
.glow {
  position: absolute; border-radius: 50%; filter: blur(90px); opacity: .45;
}
.glow-1 { width: 420px; height: 420px; background: #3b82f6; top: -120px; right: -80px; }
.glow-2 { width: 380px; height: 380px; background: #93c5fd; bottom: -120px; left: -100px; opacity: .55; }

.hero-inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center;
}
.hero-copy h1 { margin-bottom: 18px; }
.hero-copy .lead { font-size: 1.1rem; color: var(--muted); max-width: 56ch; margin-bottom: 32px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }

.hero-meta {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
  border-top: 1px solid var(--line); padding-top: 24px; max-width: 540px;
}
.hero-meta li { display: flex; flex-direction: column; }
.hero-meta strong { font-size: 1.2rem; color: var(--text); font-weight: 700; }
.hero-meta span  { font-size: .82rem; color: var(--muted); }

/* Hero visual / card stack */
.hero-visual { position: relative; min-height: 400px; }
.card-stack { position: relative; height: 100%; min-height: 420px; }
.stack-card {
  position: absolute;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-2);
}

.sc1 {
  top: 20px; left: 0; right: 80px;
  padding: 0; overflow: hidden;
  background: #0f172a;
  border-color: rgba(15, 23, 42, 0.4);
}
.sc-head {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px; border-bottom: 1px solid rgba(255,255,255,0.08);
  background: rgba(0,0,0,.2);
  font-size: .78rem; color: #94a3b8;
  font-family: 'JetBrains Mono', monospace;
}
.sc-head .dot { width: 10px; height: 10px; border-radius: 50%; background: #475569; }
.sc-head em { font-style: normal; margin-left: auto; }
.sc1 pre {
  margin: 0; padding: 18px;
  font-family: 'JetBrains Mono', monospace; font-size: .82rem;
  color: #cbd5e1; line-height: 1.7;
  overflow-x: auto;
}
.c-kw  { color: #c084fc; }
.c-fn  { color: #60a5fa; }
.c-str { color: #fbbf24; }
.c-cm  { color: #64748b; font-style: italic; }

.sc2 {
  top: 200px; right: 0; left: 100px;
  padding: 16px 18px;
}
.sc-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: .9rem;
}
.sc-row:last-child { border-bottom: 0; }
.pill {
  font-size: .72rem; padding: 3px 9px; border-radius: 999px; font-weight: 600;
}
.pill.ok   { background: rgba(22, 163, 74, .12); color: var(--ok); }
.pill.warn { background: rgba(217, 119, 6, .12); color: var(--warn); }

.sc3 {
  bottom: 0; left: 30px;
  padding: 18px; min-width: 220px;
  display: flex; flex-direction: column; gap: 8px;
}
.sc3-label { font-size: .78rem; color: var(--muted); text-transform: uppercase; letter-spacing: .1em; }
.sc3-val   { font-size: 2rem; font-weight: 700; color: var(--text); }
.sc3-val small { font-size: 1rem; color: var(--accent); margin-left: 2px; }
.sc3-bar { display: block; height: 6px; background: var(--bg-2); border-radius: 99px; overflow: hidden; }
.sc3-bar i {
  display: block; height: 100%; width: 99.99%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 99px;
}

/* ---------- Trust strip ---------- */
.trust {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-1);
  padding: 28px 0;
}
.trust-label {
  text-align: center; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--muted-2); margin: 0 0 14px;
}
.trust-row {
  display: flex; justify-content: center; align-items: center;
  flex-wrap: wrap; gap: 18px;
  font-family: 'JetBrains Mono', monospace; font-size: .92rem; color: var(--muted);
}
.trust-row i {
  display: inline-block; width: 4px; height: 4px;
  background: var(--accent); border-radius: 50%; opacity: .65;
}

/* ---------- Sections ---------- */
.section { padding: clamp(70px, 9vw, 110px) 0; position: relative; }
.section-alt { background: var(--bg-1); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.section-head {
  text-align: center; max-width: 720px; margin: 0 auto 56px;
}
.section-head .eyebrow { margin-bottom: 14px; }
.section-head .muted { font-size: 1.05rem; }

.two-col {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: center;
}

/* ---------- About ---------- */
.check-list { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 12px; }
.check-list li {
  position: relative; padding-left: 32px;
  font-size: .98rem; color: var(--text);
}
.check-list li::before {
  content: ''; position: absolute; left: 0; top: 4px;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--accent-soft);
  border: 1px solid rgba(29, 78, 216, 0.3);
}
.check-list li::after {
  content: ''; position: absolute; left: 6px; top: 9px;
  width: 8px; height: 4px;
  border-left: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(-45deg);
}

.kpi-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
}
.kpi {
  padding: 28px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  box-shadow: var(--shadow-card);
  display: flex; flex-direction: column; gap: 6px;
  transition: transform var(--t), border-color var(--t), box-shadow var(--t);
}
.kpi:hover { transform: translateY(-3px); border-color: rgba(29, 78, 216, 0.35); box-shadow: var(--shadow-2); }
.kpi strong {
  font-size: 2rem; font-weight: 800; letter-spacing: -.02em;
  background: linear-gradient(135deg, #1d4ed8, #3b82f6);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.kpi span { font-size: .88rem; color: var(--muted); }

/* ---------- Services / Cards ---------- */
.cards {
  display: grid; gap: 22px;
  grid-template-columns: repeat(3, 1fr);
}
.card {
  padding: 32px 26px;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: transform var(--t), border-color var(--t), box-shadow var(--t);
  position: relative; overflow: hidden;
}
.card::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(400px 200px at 50% -10%, rgba(29, 78, 216, 0.08), transparent 60%);
  opacity: 0; transition: opacity var(--t);
  pointer-events: none;
}
.card:hover { transform: translateY(-4px); border-color: rgba(29, 78, 216, 0.35); box-shadow: var(--shadow-2); }
.card:hover::before { opacity: 1; }
.card-icon {
  width: 52px; height: 52px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(29, 78, 216, 0.22);
  margin-bottom: 18px;
}
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); margin-bottom: 18px; }
.mini-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.mini-list li {
  font-size: .88rem; color: var(--text); padding-left: 18px; position: relative;
}
.mini-list li::before {
  content: ''; position: absolute; left: 0; top: 9px;
  width: 6px; height: 6px; background: var(--accent); border-radius: 50%;
}

/* ---------- Industries ---------- */
.industries-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}
.ind-tile {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  box-shadow: var(--shadow-card);
  transition: transform var(--t), border-color var(--t), background var(--t), box-shadow var(--t);
}
.ind-tile:hover { transform: translateY(-3px); border-color: rgba(29, 78, 216, 0.35); box-shadow: var(--shadow-2); }
.ind-tile h4 { color: var(--accent); margin-bottom: 6px; }
.ind-tile p  { color: var(--muted); font-size: .92rem; margin: 0; }

/* ---------- Why us ---------- */
.why-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px;
}
.why-item {
  padding: 28px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  box-shadow: var(--shadow-card);
  position: relative; overflow: hidden;
}
.why-num {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: .85rem; color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 10px; border-radius: 6px;
  margin-bottom: 14px;
}
.why-item h4 { margin-bottom: 8px; }
.why-item p  { color: var(--muted); margin: 0; font-size: .95rem; }

/* ---------- CTA band ---------- */
.cta-band {
  padding: 64px 0;
  background:
    radial-gradient(600px 300px at 100% 0%, rgba(59, 130, 246, 0.12), transparent 60%),
    radial-gradient(600px 300px at 0% 100%, rgba(29, 78, 216, 0.10), transparent 60%),
    var(--bg-1);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.cta-inner {
  display: flex; justify-content: space-between; align-items: center; gap: 32px;
  flex-wrap: wrap;
}
.cta-inner h3 { font-size: 1.5rem; margin-bottom: 6px; }
.cta-inner .muted { margin: 0; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
.contact-grid-2 {
  grid-template-columns: repeat(2, 1fr);
  max-width: 760px;
  margin: 0 auto;
}
.contact-card {
  display: flex; flex-direction: column; gap: 8px;
  padding: 32px 26px;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  color: var(--text);
  transition: transform var(--t), border-color var(--t), box-shadow var(--t);
}
a.contact-card { cursor: pointer; }
a.contact-card:hover,
.contact-card:hover {
  transform: translateY(-3px);
  border-color: rgba(29, 78, 216, 0.35);
  box-shadow: var(--shadow-2);
  color: var(--text);
}
.contact-card .ci {
  margin-bottom: 6px;
}
.contact-card h4 {
  margin: 0;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--muted);
  font-weight: 600;
}
.contact-card p {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
}
.contact-card address {
  font-style: normal;
  color: var(--muted);
  font-size: .94rem;
  line-height: 1.6;
}
.contact-card address strong {
  color: var(--text);
  display: inline-block;
  margin-bottom: 4px;
  font-size: 1rem;
}

.footer-address {
  color: var(--muted);
  font-size: .88rem;
  line-height: 1.55;
  padding-top: 6px;
}
.ci {
  width: 42px; height: 42px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 10px; background: var(--accent-soft);
  color: var(--accent); border: 1px solid rgba(29, 78, 216, 0.22);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-1);
  border-top: 1px solid var(--line);
  padding-top: 60px;
  margin-top: 0;
}
.footer-inner {
  display: grid; grid-template-columns: 1.4fr 2fr; gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .muted { margin-top: 14px; max-width: 36ch; font-size: .92rem; }
.footer-cols {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px;
}
.footer-cols h5 { color: var(--text); }
.footer-cols ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer-cols a { color: var(--muted); font-size: .92rem; }
.footer-cols a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 20px 0;
  font-size: .85rem;
  color: var(--muted-2);
}
.footer-bottom .container {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0; transform: translateY(18px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1);
}
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-inner,
  .two-col { grid-template-columns: 1fr; gap: 50px; }
  .hero { padding-top: 120px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 30px; }
  .hero-visual { order: -1; min-height: 380px; }
}

@media (max-width: 720px) {
  .nav-toggle { display: inline-block; }
  .primary-nav {
    position: fixed; top: 70px; left: 0; right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
    padding: 24px var(--pad);
    flex-direction: column; align-items: stretch; gap: 18px;
    transform: translateY(-110%); opacity: 0; pointer-events: none;
    transition: transform var(--t), opacity var(--t);
  }
  .primary-nav.open {
    transform: translateY(0); opacity: 1; pointer-events: auto;
  }
  .primary-nav ul { flex-direction: column; gap: 14px; }
  .primary-nav a { font-size: 1rem; color: var(--text); }
  .nav-cta { width: 100%; }

  .hero-meta { grid-template-columns: 1fr; gap: 14px; }
  .cards,
  .industries-grid,
  .kpi-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr 1fr; gap: 24px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }

  .sc1 { right: 30px; }
  .sc2 { left: 40px; }
  .sc3 { left: 0; }
}