/* ============================================================
   OSA INT. — WEBSITE STYLESHEET
   Brand: Navy #0D1B4B | Royal Blue #1A3FA0 | Blue #2563C8
          Sky #38A8E8 | Light Blue #7DD4F8
   Fonts: Barlow Condensed 800/700 (headings) | Barlow 400 (body)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:ital,wght@0,700;0,800;1,800&family=Barlow:wght@400;600&display=swap');

/* ── RESET & BASE ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Barlow', sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.7;
  color: #0A0A0A;
  background: #fff;
}

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

a { color: #2563C8; text-decoration: none; }
a:hover { color: #38A8E8; }

/* ── TYPOGRAPHY ───────────────────────────────────────────── */
.display {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 800;
  font-size: clamp(44px, 7vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.5px;
}

h1, .h1 {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700;
  font-size: clamp(28px, 4vw, 36px);
  line-height: 1.15;
}

h2, .h2 {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700;
  font-size: clamp(20px, 2.5vw, 24px);
  line-height: 1.2;
}

.label {
  font-family: 'Barlow', sans-serif;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

/* ── LAYOUT ───────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 96px 0; }

/* ── NAV ──────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid #e5eaf3;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav__logo img {
  height: 56px;
  width: auto;
  object-fit: contain;
}

.nav__logo-mark {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, #0D1B4B 0%, #1A3FA0 60%, #38A8E8 100%);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0px 2px 6px rgba(13,27,75,0.25));
}

.nav__logo-mark svg { width: 22px; height: 22px; }

.nav__wordmark {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 800;
  font-style: italic;
  font-size: 26px;
  color: #0D1B4B;
  letter-spacing: 0.02em;
}

.nav__wordmark span { color: #2563C8; }

.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav__links a {
  font-family: 'Barlow', sans-serif;
  font-weight: 600;
  font-size: 14px;
  color: #0D1B4B;
  letter-spacing: 0.02em;
  transition: color 0.2s;
}

.nav__links a:hover { color: #2563C8; }

.btn {
  display: inline-block;
  font-family: 'Barlow', sans-serif;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.04em;
  padding: 10px 24px;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  border: none;
  text-decoration: none;
}

.btn--primary {
  background: #2563C8;
  color: #fff;
}

.btn--primary:hover {
  background: #1A3FA0;
  color: #fff;
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: #fff;
  border: 2px solid #38A8E8;
}

.btn--outline:hover {
  background: #38A8E8;
  color: #0D1B4B;
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #0D1B4B;
  border-radius: 2px;
  transition: 0.3s;
}

/* ── HERO ─────────────────────────────────────────────────── */
.hero {
  background: #0D1B4B;
  padding: 120px 0 100px;
  position: relative;
  overflow: hidden;
}

/* Circuit/speed-line accent — ties to logo motif */
.hero::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 55%;
  height: 100%;
  background:
    repeating-linear-gradient(
      -60deg,
      transparent,
      transparent 60px,
      rgba(56,168,232,0.04) 60px,
      rgba(56,168,232,0.04) 61px
    ),
    repeating-linear-gradient(
      30deg,
      transparent,
      transparent 80px,
      rgba(37,99,200,0.05) 80px,
      rgba(37,99,200,0.05) 81px
    );
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  top: 30%;
  right: 5%;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(56,168,232,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero__eyebrow {
  color: #38A8E8;
  margin-bottom: 20px;
}

.hero__headline {
  color: #fff;
  margin-bottom: 24px;
}

.hero__sub {
  font-size: 17px;
  color: rgba(255,255,255,0.75);
  max-width: 580px;
  margin-bottom: 40px;
  line-height: 1.7;
}

.hero__ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ── STATS BAR ────────────────────────────────────────────── */
.stats-bar {
  background: #0D1B4B;
  border-top: 3px solid #38A8E8;
  padding: 56px 0;
}

.stats-bar__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.stats-bar__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 24px;
  position: relative;
}

/* Vertical separator between items */
.stats-bar__item + .stats-bar__item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10%;
  height: 80%;
  width: 1px;
  background: rgba(56,168,232,0.25);
}

.stats-bar__number {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 800;
  font-size: clamp(44px, 6vw, 64px);
  line-height: 1;
  color: #fff;
  letter-spacing: -0.5px;
  margin-bottom: 10px;
}

.stats-bar__label {
  font-family: 'Barlow', sans-serif;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: #38A8E8;
  line-height: 1.4;
  max-width: 140px;
}

@media (max-width: 640px) {
  .stats-bar__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px 0;
  }

  .stats-bar__item + .stats-bar__item::before { display: none; }

  /* Re-add separator only on right column items */
  .stats-bar__item:nth-child(even)::before {
    display: block;
    top: 10%;
    height: 80%;
  }

  /* Horizontal separator between rows */
  .stats-bar__item:nth-child(3),
  .stats-bar__item:nth-child(4) {
    padding-top: 40px;
    border-top: 1px solid rgba(56,168,232,0.2);
  }
}

/* ── BUSINESS LINES ───────────────────────────────────────── */
.business-lines {
  background: #fff;
}

.section-header {
  margin-bottom: 56px;
}

.section-header__eyebrow {
  color: #2563C8;
  margin-bottom: 12px;
}

.section-header__title {
  color: #0D1B4B;
  max-width: 600px;
}

.section-header__desc {
  color: #444;
  max-width: 580px;
  margin-top: 16px;
  font-size: 16px;
}

.bl__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.bl__card {
  border: 1px solid #e2e8f5;
  border-top: 4px solid #2563C8;
  border-radius: 8px;
  padding: 40px 36px;
  transition: box-shadow 0.25s, transform 0.25s;
}

.bl__card:hover {
  box-shadow: 0 8px 32px rgba(13,27,75,0.1);
  transform: translateY(-3px);
}

.bl__card--xgrc { border-top-color: #38A8E8; }

.bl__icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #0D1B4B, #2563C8);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.bl__icon svg { width: 26px; height: 26px; color: #fff; fill: none; stroke: currentColor; stroke-width: 1.8; }

.bl__title {
  color: #0D1B4B;
  margin-bottom: 14px;
}

.bl__desc {
  color: #555;
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.bl__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.bl__tag {
  font-family: 'Barlow', sans-serif;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #2563C8;
  background: rgba(37,99,200,0.08);
  padding: 4px 10px;
  border-radius: 3px;
}

/* ── CLIENTS / TRUSTED BY ─────────────────────────────────── */
.clients {
  background: #f4f7fc;
  padding: 80px 0;
}

.clients .section-header {
  margin-bottom: 48px;
  text-align: center;
}

.clients .section-header__title {
  max-width: 100%;
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700;
  color: #0D1B4B;
}

.clients__grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.client-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 160px;
  height: 80px;
  background: #fff;
  border: 1px solid #dde4f0;
  border-radius: 6px;
  filter: grayscale(100%);
  opacity: 0.65;
  transition: filter 0.25s, opacity 0.25s, transform 0.25s;
}

.client-logo:hover {
  filter: grayscale(0%);
  opacity: 1;
  transform: translateY(-2px);
}

.client-logo__name {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700;
  font-size: 15px;
  color: #0D1B4B;
  text-align: center;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0 12px;
}

/* ── SERVICES ─────────────────────────────────────────────── */
.services {
  background: #f9fafb;
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card {
  background: #fff;
  border: 1px solid #e5eaf3;
  border-radius: 8px;
  padding: 32px 24px;
  transition: box-shadow 0.25s, transform 0.25s;
}

.service-card:hover {
  box-shadow: 0 6px 24px rgba(13,27,75,0.08);
  transform: translateY(-2px);
}

.service-card__icon {
  width: 44px;
  height: 44px;
  background: rgba(37,99,200,0.08);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: #2563C8;
}

.service-card__icon svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; }

.service-card__title {
  color: #0D1B4B;
  margin-bottom: 10px;
}

.service-card__desc {
  font-size: 14px;
  color: #666;
  line-height: 1.65;
}

.service-divider {
  display: block;
  width: 32px;
  height: 2px;
  background: #38A8E8;
  margin: 14px 0;
  border-radius: 1px;
}

/* ── ABOUT / OUR DNA ──────────────────────────────────────── */
.about {
  background: #0D1B4B;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.about::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 48px,
      rgba(56,168,232,0.03) 48px,
      rgba(56,168,232,0.03) 49px
    );
  pointer-events: none;
}

.about__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.about__eyebrow { color: #38A8E8; margin-bottom: 12px; }

.about__title { color: #fff; margin-bottom: 20px; }

.about__desc {
  color: rgba(255,255,255,0.72);
  font-size: 16px;
  margin-bottom: 32px;
}

.about__pillars {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about__pillar { border-left: 3px solid #2563C8; padding-left: 18px; }
.about__pillar h3 {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700;
  font-size: 16px;
  color: #7DD4F8;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}
.about__pillar p { color: rgba(255,255,255,0.65); font-size: 14px; }

.about__offices {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.about__office-group h3 {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700;
  font-size: 20px;
  color: #7DD4F8;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.about__office {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(56,168,232,0.2);
  border-radius: 8px;
  padding: 20px 22px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 12px;
}

.about__office-flag { font-size: 24px; line-height: 1; }

.about__office-info h4 {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700;
  font-size: 17px;
  color: #fff;
  margin-bottom: 2px;
}

.about__office-info p {
  color: rgba(255,255,255,0.55);
  font-size: 13px;
}

.about__values {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.about__value-chip {
  font-family: 'Barlow', sans-serif;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #38A8E8;
  background: rgba(56,168,232,0.1);
  border: 1px solid rgba(56,168,232,0.25);
  padding: 5px 12px;
  border-radius: 3px;
}

/* ── CONTACT ──────────────────────────────────────────────── */
.contact { background: #fff; }

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 72px;
  align-items: start;
}

.contact__info h2 { color: #0D1B4B; margin-bottom: 16px; }
.contact__info p { color: #555; font-size: 15px; margin-bottom: 32px; }

.contact__detail {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 20px;
}

.contact__detail-icon {
  width: 36px;
  height: 36px;
  background: rgba(37,99,200,0.08);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #2563C8;
}

.contact__detail-icon svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; }

.contact__detail-text h4 {
  font-family: 'Barlow', sans-serif;
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #888;
  margin-bottom: 2px;
}

.contact__detail-text p { color: #0D1B4B; font-size: 14px; }

.contact__form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.form__field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form__label {
  font-family: 'Barlow', sans-serif;
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #555;
}

.form__input, .form__textarea {
  font-family: 'Barlow', sans-serif;
  font-size: 15px;
  color: #0A0A0A;
  background: #f9fafb;
  border: 1px solid #dde4f0;
  border-radius: 4px;
  padding: 12px 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}

.form__input:focus, .form__textarea:focus {
  outline: none;
  border-color: #2563C8;
  box-shadow: 0 0 0 3px rgba(37,99,200,0.1);
}

.form__textarea { min-height: 120px; resize: vertical; }

/* ── TECHNOLOGY PARTNERS ──────────────────────────────────── */
.partners {
  background: #fff;
  padding: 72px 0;
  border-top: 1px solid #e5eaf3;
}

.partners .section-header {
  margin-bottom: 40px;
  text-align: center;
}

.partners .section-header__title {
  max-width: 100%;
  color: #0D1B4B;
}

.partners__grid {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.partner-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 200px;
  height: 88px;
  background: #f4f7fc;
  border: 1px solid #dde4f0;
  border-radius: 8px;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.partner-logo:hover {
  border-color: #38A8E8;
  box-shadow: 0 4px 16px rgba(37,99,200,0.1);
  transform: translateY(-2px);
}

.partner-logo__text {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700;
  font-size: 14px;
  color: #888;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-align: center;
  padding: 0 16px;
}

/* ── FOOTER ───────────────────────────────────────────────── */
.footer {
  background: #0A0A0A;
  color: rgba(255,255,255,0.55);
  padding: 48px 0 32px;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 28px;
}

.footer__brand p {
  font-size: 14px;
  line-height: 1.65;
  margin-top: 14px;
  max-width: 260px;
}

.footer__brand .nav__wordmark { color: #fff; font-size: 20px; }

.footer__col h4 {
  font-family: 'Barlow', sans-serif;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.35);
  margin-bottom: 16px;
}

.footer__col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }

.footer__col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  transition: color 0.2s;
}

.footer__col ul li a:hover { color: #38A8E8; }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

.footer__legal a { color: rgba(255,255,255,0.35); margin-left: 20px; transition: color 0.2s; }
.footer__legal a:hover { color: #38A8E8; }

/* ── DIVIDER LINE ─────────────────────────────────────────── */
.sky-divider {
  display: block;
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, #2563C8, #38A8E8);
  border-radius: 2px;
  margin: 20px 0;
}

/* ── RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .about__inner { grid-template-columns: 1fr; gap: 48px; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  section { padding: 64px 0; }

  .nav__links, .nav__cta { display: none; }
  .nav__hamburger { display: flex; }

  .bl__grid { grid-template-columns: 1fr; }
  .services__grid { grid-template-columns: 1fr; }
  .contact__grid { grid-template-columns: 1fr; gap: 40px; }
  .form__row { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; gap: 32px; }
  .footer__bottom { flex-direction: column; gap: 12px; text-align: center; }

  .partners__grid { gap: 12px; }
  .partner-logo { width: 160px; height: 72px; }

  .clients__grid { gap: 10px; }
  .client-logo { width: 130px; height: 64px; }
  .client-logo__name { font-size: 12px; }
}

@media (max-width: 480px) {
  .hero__ctas { flex-direction: column; }
  .btn { text-align: center; }
  .clients__grid { gap: 8px; }
  .client-logo { width: 110px; height: 56px; }
}