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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: #1f2937;
  line-height: 1.6;
  background: #ffffff;
}

/* COMMON */
.section {
  padding: 80px 20px;
  max-width: 1200px;
  margin: auto;
}

.section.light {
  background: #f9fafb;
}

h2, h3, h4 {
  font-weight: 700;
}

.center-text {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 40px;
}

.underline {
  width: 96px;
  height: 4px;
  background: #0d9488;
  margin: 12px auto 40px;
  border-radius: 2px;
}

/* HEADER */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(90deg, #0d9488, #0f766e);
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.nav {
  max-width: 1200px;
  margin: auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand i {
  font-size: 28px;
}

.brand h1 {
  font-size: 18px;
}

.brand p {
  font-size: 12px;
  opacity: 0.8;
}

.nav-links a {
  margin-left: 24px;
  color: #ffffff;
  text-decoration: none;
  font-weight: 500;
}

.nav-links a:hover {
  opacity: 0.8;
}

/* HERO */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Carousel */
.hero-carousel {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-carousel img {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
}

.hero-carousel img.active {
  opacity: 1;
}

/* Overlay */
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(
    to bottom,
    rgba(236, 254, 255, 0.85),
    rgba(13, 148, 136, 0.55)
  );
}

/* Hero content */
.hero-content {
  position: relative;
  z-index: 3;
  max-width: 900px;
  margin: auto;
  text-align: center;
  padding: 40px 20px;
}

.hero h2 {
  font-size: 42px;
  margin-bottom: 20px;
}

.hero p {
  font-size: 20px;
  color: #1f2937;
  margin-bottom: 32px;
}

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

/* BUTTONS */
.btn {
  padding: 14px 32px;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
}

.btn.primary {
  background: #0d9488;
  color: #ffffff;
}

.btn.primary:hover {
  background: #0f766e;
}

.btn.secondary {
  border: 2px solid #0d9488;
  color: #0d9488;
  background: #ffffff;
}

/* CARDS */
.card {
  background: linear-gradient(135deg, #ecfeff, #eff6ff);
  padding: 32px;
  border-radius: 20px;
}

/* GRID */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

/* FEATURES */
.feature-card {
  background: #ffffff;
  padding: 32px;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(0,0,0,0.15);
}

.icon {
  font-size: 32px;
  margin-bottom: 16px;
}

.icon.blue { color: #2563eb; }
.icon.green { color: #16a34a; }
.icon.orange { color: #ea580c; }

/* MISSION */
.mission {
  background: linear-gradient(135deg, #0d9488, #0f766e);
  color: #ffffff;
  padding: 100px 20px;
  text-align: center;
}

.big-icon {
  font-size: 64px;
  margin-bottom: 20px;
}

.mission p {
  max-width: 900px;
  margin: 0 auto 30px;
  font-size: 20px;
}

.mission blockquote {
  background: rgba(255,255,255,0.15);
  padding: 24px;
  border-radius: 20px;
  font-size: 22px;
  font-weight: 600;
}

/* CONTACT */
.contact-card {
  background: #ffffff;
  padding: 24px;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.contact-card i {
  font-size: 28px;
  margin-bottom: 10px;
  color: #0d9488;
}

.contact-card a {
  color: #0d9488;
  text-decoration: none;
}

/* FOOTER */
.footer {
  background: #1f2937;
  color: #d1d5db;
  padding: 32px 20px;
  text-align: center;
  font-size: 14px;
}

/* FOOTER LINKS (LEGAL PAGES) */
.footer-links {
  margin-top: 12px;
  font-size: 13px;
}

.footer-links a {
  color: #9ca3af;
  text-decoration: none;
  margin: 0 6px;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #ffffff;
  text-decoration: underline;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero h2 {
    font-size: 32px;
  }
  .hero p {
    font-size: 18px;
  }
}