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

:root {
  --blue-dark: #002b5b;
  --blue-medium: #0077b6;
  --light-bg: #eef2f3;
  --white: #ffffff;
  --text: #333333;
}

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

/* HEADER */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background-color: var(--blue-dark);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: box-shadow 0.3s ease;
}

header.scrolled {
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25);
}

.logo img {
  height: 65px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

nav a {
  text-decoration: none;
  color: var(--white);
  font-weight: 600;
  transition: color 0.3s ease;
}

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

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 22px;
  cursor: pointer;
}

.bar {
  height: 3px;
  width: 100%;
  background-color: var(--white);
  border-radius: 10px;
  transition: all 0.3s ease;
}

@media (max-width: 900px) {
  .hamburger {
    display: flex;
    z-index: 2000;
  }
  nav ul {
    flex-direction: column;
    background-color: var(--blue-dark);
    position: absolute;
    top: 70px;
    right: 0;
    width: 230px;
    border-radius: 0 0 0 8px;
    display: none;
    padding: 1rem;
  }
  nav.active ul {
    display: flex;
    animation: fadeIn 0.25s ease;
  }
  @keyframes fadeIn {
    from {
      opacity: 0;
      transform: translateY(-8px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  .hamburger.active .bar:nth-child(1) {
    transform: rotate(45deg) translateY(8px);
  }
  .hamburger.active .bar:nth-child(2) {
    opacity: 0;
  }
  .hamburger.active .bar:nth-child(3) {
    transform: rotate(-45deg) translateY(-8px);
  }
  nav a {
    color: var(--white);
    padding: 0.7rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  nav a:last-child {
    border-bottom: none;
  }
}

/* HERO */
.hero {
  position: relative;
  text-align: center;
  color: var(--white);
  height: 78vh;
  overflow: hidden;
}
.hero-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(82%);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.05) 55%);
}
.hero-text {
  position: absolute;
  top: 52%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  max-width: 900px;
  padding: 0 1rem;
}
.hero-text h1 {
  font-size: 2.8rem;
  line-height: 1.15;
  margin-bottom: 0.8rem;
}
.hero-text p {
  font-size: 1.2rem;
  opacity: 0.95;
}
.cta-btn {
  display: inline-block;
  margin-top: 1.2rem;
  padding: 0.8rem 1.4rem;
  background: var(--blue-medium);
  color: var(--white);
  text-decoration: none;
  border-radius: 8px;
  font-weight: 700;
  transition: transform 0.2s ease, background 0.2s ease;
}
.cta-btn:hover {
  transform: translateY(-2px);
  background: #036aa0;
}

/* SECTIONS */
.section {
  padding: 4rem 2rem;
  text-align: center;
}
.section.light-bg {
  background-color: var(--light-bg);
}
.section h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: var(--blue-dark);
}

/* ABOUT */
.about-text {
  max-width: 900px;
  margin: 0 auto;
  font-size: 1.06rem;
  display: grid;
  gap: 0.8rem;
}

/* PROGRAMS */
.programs-lead {
  max-width: 860px;
  margin: 0 auto 1.6rem;
  font-size: 1.06rem;
}
.program-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
}
@media (max-width: 980px) {
  .program-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 560px) {
  .program-grid {
    grid-template-columns: 1fr;
  }
}
.program-item {
  background: #fff;
  border-radius: 12px;
  padding: 1.2rem;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
}
.program-item h3 {
  color: var(--blue-dark);
  font-size: 1.05rem;
  margin-bottom: 0.3rem;
}
.program-item p {
  font-size: 0.98rem;
  color: #4a4a4a;
}

/* DESTINATIONS */
.cards {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2rem;
}
.card {
  background-color: #fff;
  border-radius: 12px;
  width: 320px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: transform 0.25s ease;
}
.card:hover {
  transform: translateY(-6px);
}
.card img {
  width: 100%;
  height: 210px;
  object-fit: cover;
}
.card h3 {
  font-size: 1.2rem;
  margin: 0.9rem 1rem 0.4rem;
  color: var(--blue-medium);
}
.card p {
  padding: 0 1rem 1.1rem;
  font-size: 0.98rem;
  color: #4a4a4a;
}

/* GALLERY */
.carousel {
  overflow-x: auto;
  display: flex;
  scroll-behavior: smooth;
}
.carousel-track {
  display: flex;
  gap: 1rem;
  padding: 1rem;
  margin: 0 auto;
  max-width: 1200px;
}
.carousel-track img {
  width: 350px;
  height: 230px;
  border-radius: 12px;
  object-fit: cover;
  transition: transform 0.25s ease;
  cursor: pointer;
}
.carousel-track img:hover {
  transform: scale(1.04);
}

/* CONTACT */
.contact-section {
  background: var(--light-bg);
}
.contact-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.2rem;
}
.contact-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--blue-medium);
  color: white;
  text-decoration: none;
  padding: 0.7rem 1.2rem;
  border-radius: 8px;
  font-weight: 600;
  transition: background 0.3s ease;
}
.contact-chip:hover {
  background: #036aa0;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 1.8rem 1rem;
  background-color: var(--blue-dark);
  color: var(--white);
  font-size: 0.95rem;
}