/* ===== Variables ===== */
:root {
  --blue-dark: #0a1f44;
  --blue-dark-2: #102a5c;
  --blue-light: #3aa0ff;
  --blue-light-2: #e8f2ff;
  --white: #ffffff;
  --text-dark: #16213e;
  --text-muted: #5a6b8c;
  --radius: 12px;
  --shadow: 0 10px 30px rgba(10, 31, 68, 0.08);
  --container-width: 1140px;
  --transition: 0.25s ease;
}

/* ===== Reset ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  background: var(--white);
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
}

.btn--primary {
  background: var(--blue-light);
  color: var(--white);
  box-shadow: 0 8px 20px rgba(58, 160, 255, 0.35);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(58, 160, 255, 0.45);
}

.btn--ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--white);
}

.btn--small {
  padding: 10px 20px;
  font-size: 0.85rem;
}

.btn--full {
  width: 100%;
  text-align: center;
  border: none;
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 31, 68, 0.95);
  backdrop-filter: blur(6px);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
}

.logo {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: 0.5px;
}

.logo span {
  color: var(--blue-light);
}

.logo small {
  font-weight: 400;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.7);
  margin-left: 4px;
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition);
}

.nav a:hover {
  color: var(--blue-light);
}

.header__cta {
  display: inline-block;
}

.burger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.burger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-dark-2) 60%, #14397a 100%);
  color: var(--white);
  padding: 120px 0 100px;
  text-align: center;
}

.hero__inner {
  max-width: 760px;
}

.hero__eyebrow {
  color: var(--blue-light);
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.hero__title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero__text {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 36px;
}

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

/* ===== Section common ===== */
section {
  padding: 90px 0;
}

.section__eyebrow {
  color: var(--blue-light);
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-size: 0.85rem;
  text-align: center;
  margin-bottom: 12px;
}

.section__title {
  text-align: center;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--blue-dark);
  max-width: 700px;
  margin: 0 auto 56px;
}

.section__eyebrow--light {
  color: var(--blue-light);
}

.section__title--light {
  color: var(--white);
}

/* ===== Services ===== */
.services {
  background: var(--white);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}

.card {
  background: var(--blue-light-2);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.card__icon {
  font-size: 2.2rem;
  margin-bottom: 18px;
}

.card h3 {
  font-size: 1.15rem;
  color: var(--blue-dark);
  margin-bottom: 12px;
}

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ===== Why ===== */
.why {
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-dark-2) 100%);
  color: var(--white);
}

.why__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 32px;
}

.why__item {
  text-align: center;
  padding: 24px;
}

.why__number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--blue-light);
  margin-bottom: 12px;
}

.why__item h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.why__item p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.92rem;
}

/* ===== Contact ===== */
.contact {
  background: var(--white);
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 56px;
  align-items: start;
}

.contact__text {
  color: var(--text-muted);
  margin-bottom: 28px;
  font-size: 1.05rem;
}

.contact__list li {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
  font-size: 1.05rem;
}

.contact__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--blue-light-2);
  font-size: 1.1rem;
}

.contact__list a:hover {
  color: var(--blue-light);
}

.contact__form {
  background: var(--blue-light-2);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.form__group {
  margin-bottom: 20px;
}

.form__group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: var(--blue-dark);
}

.form__group input,
.form__group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #c9d9ee;
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form__group input:focus,
.form__group textarea:focus {
  outline: none;
  border-color: var(--blue-light);
  box-shadow: 0 0 0 3px rgba(58, 160, 255, 0.2);
}

.form__status {
  margin-top: 14px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--blue-dark);
  min-height: 1.2em;
}

/* ===== Footer ===== */
.footer {
  background: var(--blue-dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 28px 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.9rem;
}

.footer__links {
  display: flex;
  gap: 22px;
}

.footer__links a:hover {
  color: var(--blue-light);
}

/* ===== Responsive ===== */
@media (max-width: 860px) {
  .contact__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--blue-dark);
    flex-direction: column;
    align-items: center;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }

  .nav.is-open {
    max-height: 300px;
  }

  .nav a {
    width: 100%;
    text-align: center;
    padding: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .header__cta {
    display: none;
  }

  .burger {
    display: flex;
  }

  .burger.is-open span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .burger.is-open span:nth-child(2) {
    opacity: 0;
  }

  .burger.is-open span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .hero {
    padding: 90px 0 70px;
  }

  section {
    padding: 64px 0;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }
}