:root {
  --navy: #07111f;
  --navy-dark: #020617;
  --blue: #0284c7;
  --sky: #38bdf8;
  --light: #f5f7fb;
  --text: #0f172a;
  --gray: #64748b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.7;
}

/* NAVBAR */
.navbar {
  min-height: 92px;
  background: rgba(7, 17, 31, 0.96) !important;
  backdrop-filter: blur(10px);
}

.navbar-brand {
  font-size: 2.25rem;
  font-weight: 900 !important;
  letter-spacing: 1.5px;
  color: #fff !important;
}

.navbar-brand span {
  color: #2ea8ff;
}

.nav-link {
  color: #cbd5e1 !important;
  font-size: 17px;
  font-weight: 700;
  margin-left: 18px;
}

.nav-link:hover {
  color: var(--sky) !important;
}

/* LANGUAGE SWITCH */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: rgba(255, 255, 255, .45);
}

.lang-switch a {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 17px;
  font-weight: 800;
  padding-bottom: 3px;
}

.lang-switch a:hover {
  color: var(--sky);
}

.lang-switch a.active {
  color: #fff;
  border-bottom: 3px solid var(--sky);
}

/* HERO */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 900px;
  padding: 190px 0 110px;
  color: #fff;
  background:
    linear-gradient(120deg, rgba(3, 7, 18, .96), rgba(8, 47, 73, .72)),
    radial-gradient(circle at 78% 32%, rgba(56, 189, 248, .48), transparent 32%),
    linear-gradient(135deg, #020617, #0f172a 50%, #075985);
}

.hero-wrapper {
  position: relative;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}

.hero-image {
  position: absolute;
  right: -170px;
  top: -35px;
  width: 72%;
  opacity: .5;
  z-index: 1;
  pointer-events: none;
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ENGLISH TYPOGRAPHY */
.eyebrow,
.section-label {
  color: var(--sky);
  font-size: 21px;
  font-weight: 900;
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero h1 {
  max-width: 860px;
  font-size: clamp(52px, 4.8vw, 84px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 1px;
  margin-bottom: 30px;
}

.hero .lead {
  max-width: 640px;
  color: #dbeafe;
  font-size: 20px;
  line-height: 1.85;
  font-weight: 500;
}

.hero .btn-primary {
  margin-top: 28px !important;
  font-size: 18px;
  padding: 15px 38px;
  letter-spacing: 1px;
}

/* SECTIONS */
.section {
  padding: 70px 0;
}

.section-light {
  background: var(--light);
}

.section-dark {
  background: var(--navy);
  color: #fff;
}

.section-dark p {
  color: #cbd5e1;
}

.section h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 30px;
}

/* CARDS */
.info-card,
.contact-box {
  background: #fff;
  border-radius: 12px;
  padding: 34px;
  box-shadow: 0 18px 45px rgba(15, 23, 42, .08);
}

.info-card h5 {
  line-height: 1.6;
  margin-bottom: 16px;
  font-size: 20px;
  font-weight: 700;
}

.address-info {
  margin-bottom: 10px;
  line-height: 1.7;
}

.contact-info {
  margin-bottom: 0;
  line-height: 1.6;
}

.card-box {
  height: 100%;
  padding: 34px;
  background: #fff;
  border-radius: 12px;
  border-top: 5px solid var(--blue);
  box-shadow: 0 18px 45px rgba(15, 23, 42, .08);
  transition: .25s;
}

.card-box:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 60px rgba(15, 23, 42, .14);
}

.card-box span {
  display: block;
  color: var(--blue);
  font-weight: 800;
  margin-bottom: 16px;
}

.card-box h4 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 14px;
}

/* LINK CARDS */
.link-card {
  display: block;
  height: 100%;
  padding: 34px;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 12px;
  color: #fff;
  text-decoration: none;
  background: rgba(255, 255, 255, .07);
  transition: .25s;
}

.link-card:hover {
  color: #fff;
  background: rgba(56, 189, 248, .16);
  transform: translateY(-6px);
}

.link-card h4 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 12px;
}

.link-card p {
  margin-bottom: 0;
}

/* CONTACT */
.contact-box {
  max-width: 900px;
}

.form-control {
  border-radius: 8px;
  padding: 13px 15px;
  border: 1px solid #dbe3ef;
}

.form-control:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 .2rem rgba(2, 132, 199, .15);
}

/* BUTTON */
.btn-primary {
  background: var(--blue);
  border-color: var(--blue);
  border-radius: 999px;
  padding-left: 28px;
  padding-right: 28px;
  font-weight: 800;
}

.btn-primary:hover {
  background: #0369a1;
  border-color: #0369a1;
}

/* FOOTER */
footer {
  padding: 30px 0;
  background: var(--navy-dark);
  color: #94a3b8;
  font-size: 14px;
}

/* TOP BUTTON */
#topBtn {
  display: none;
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 46px;
  height: 46px;
  border: none;
  border-radius: 50%;
  background: var(--blue);
  color: white;
  font-size: 20px;
  z-index: 999;
}

#topBtn:hover {
  background: #0369a1;
}

/* TABLET */
@media (max-width: 991px) {
  .navbar {
    min-height: 78px;
  }

  .navbar-brand {
    font-size: 1.75rem;
  }

  .navbar-collapse {
    padding: 18px 0 12px;
  }

  .nav-link {
    font-size: 16px;
    padding: 10px 0 !important;
    margin-left: 0;
  }

  .lang-switch {
    padding-top: 10px;
  }

  .hero {
    min-height: auto;
    padding: 145px 0 90px;
  }

  .hero h1 {
    font-size: 56px;
  }

  .hero .lead {
    font-size: 18px;
  }

  .hero-image {
    right: -160px;
    top: 80px;
    width: 68%;
    opacity: .35;
  }
}

/* MOBILE */
@media (max-width: 768px) {
  .navbar-brand {
    font-size: 1.45rem;
  }

  .hero {
    padding: 125px 0 70px;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero h1 {
    font-size: 40px;
    line-height: 1.15;
    margin-bottom: 22px;
  }

  .hero .lead {
    font-size: 16px;
    line-height: 1.85;
    max-width: 100%;
  }

  .eyebrow,
  .section-label {
    font-size: 14px;
    letter-spacing: 3px;
  }

  .hero-image {
    position: relative;
    right: auto;
    top: auto;
    width: 115%;
    margin-left: -8%;
    margin-top: 36px;
    opacity: .38;
  }

  .section {
    padding: 64px 0;
  }

  .section h2 {
    font-size: 30px;
    margin-bottom: 22px;
  }

  .card-box,
  .info-card,
  .contact-box,
  .link-card {
    padding: 24px;
    border-radius: 14px;
  }

  .card-box h4,
  .link-card h4 {
    font-size: 20px;
  }
}

/* SMALL MOBILE */
@media (max-width: 480px) {
  .navbar-brand {
    font-size: 1.15rem;
    letter-spacing: 1px;
  }

  .hero {
    padding: 115px 0 58px;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero .lead {
    font-size: 15px;
  }

  .hero .btn-primary {
    width: 100%;
    padding: 14px 20px;
    font-size: 16px;
  }
}