/* === RESET & BASE === */
* {
  margin: 0; padding: 0; box-sizing: border-box;
}
body {
  font-family: 'Inter', sans-serif;
  background: #f7fafc;
  color: #234e52; /* deep teal */
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  line-height: 1.6;
}
a {
  text-decoration: none;
  color: inherit;
}

/* === HEADER === */
header {
  background: #e6f2f1; /* light teal */
  padding: 1rem 0;
  box-shadow: 0 2px 6px rgba(0,0,0,0.12);
  position: sticky;
  top: 0; z-index: 1000;
}
.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo img {
  height: 90px;
  transition: transform 0.3s ease;
}
.logo img:hover {
  transform: scale(1.08);
}
nav {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}
nav a {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  color: #236b60; /* medium green-teal */
  transition: background 0.3s ease, color 0.3s ease;
}
nav a:hover,
nav a:focus {
  background-color: #44bba4; /* brighter teal */
  color: #ffffff;
  outline: none;
}
nav a.active {
  background-color: #44bba4;
  color: white;
  pointer-events: none;
}

/* Hamburger for mobile */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  width: 28px;
  height: 22px;
  justify-content: space-between;
}
.hamburger div {
  height: 3.5px;
  background-color: #236b60;
  border-radius: 3px;
  transition: all 0.3s ease;
}

/* Mobile nav menu - hidden by default */
.mobile-nav {
  display: none;
  flex-direction: column;
  background: #e6f2f1;
  position: absolute;
  top: 100%;
  right: 0;
  width: 100%;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  border-top: 2px solid #44bba4;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.mobile-nav.open {
  max-height: 400px; /* enough to show all links */
}
.mobile-nav a {
  padding: 1rem;
  border-bottom: 1px solid #cde6e3;
  color: #236b60;
}
.mobile-nav a:hover,
.mobile-nav a:focus {
  background-color: #44bba4;
  color: white;
}

/* === HERO === */
.hero {
  background: linear-gradient(135deg, #44bba4 0%, #8ccfdf 100%);
  text-align: center;
  border-radius: 24px;
  margin: 2rem 1rem;
  padding: 4rem 1rem;
  color: #083237;
  box-shadow: 0 8px 18px rgba(0,0,0,0.12);
  animation: fadeIn 1s ease-in-out;
}
.hero h1 {
  font-family: 'Poppins', sans-serif;
  font-size: 2.8rem;
  margin-bottom: 1rem;
  font-weight: 700;
}
.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}
.btn-group {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.btn {
  padding: 1rem 2.2rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  border: none;
  transition: transform 0.2s ease, background 0.3s ease;
}
.btn-primary {
  background: #fdd835; /* bright yellow */
  color: #083237;
  box-shadow: 0 6px 10px rgb(253 216 53 / 0.7);
}
.btn-primary:hover {
  background: #fbc02d;
  transform: translateY(-3px);
  box-shadow: 0 12px 20px rgb(251 192 45 / 0.9);
}
.btn-secondary {
  background: #236b60; /* medium teal */
  color: #fdf5e6;
  box-shadow: 0 6px 10px rgba(35,107,96,0.6);
}
.btn-secondary:hover {
  background: #1b4c45;
  transform: translateY(-3px);
  box-shadow: 0 12px 20px rgba(27,76,69,0.8);
}

/* === FEATURE CARDS === */
.features {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  justify-content: center;
  margin: 3rem auto;
  max-width: 1100px;
  padding: 0 1rem;
}
.feature-card {
  background: #ffffff;
  border-radius: 18px;
  box-shadow: 0 8px 14px rgba(0,0,0,0.12);
  padding: 1.8rem 1.4rem;
  max-width: 300px;
  transition: box-shadow 0.3s ease;
  text-align: center;
  color: #236b60;
}
.feature-card:hover {
  box-shadow: 0 14px 26px rgba(68,187,164,0.4);
}
.feature-card h3 {
  font-family: 'Poppins', sans-serif;
  color: #44bba4;
  margin-bottom: 0.8rem;
  font-weight: 700;
}
.feature-card p {
  font-size: 1rem;
  color: #2f5b56;
}

/* === ABOUT PREVIEW === */
.about-preview {
  background: #ffffff;
  margin: 3rem auto;
  padding: 2rem 1.6rem;
  border-radius: 20px;
  box-shadow: 0 10px 20px rgba(0,0,0,0.15);
  text-align: center;
  max-width: 820px;
  color: #236b60;
}
.about-preview h2 {
  font-family: 'Poppins', sans-serif;
  color: #44bba4;
  font-size: 2.2rem;
  margin-bottom: 1rem;
  font-weight: 700;
}
.about-preview p {
  font-size: 1.1rem;
  margin-bottom: 1.2rem;
}

/* === CONTENT WRAPPER === */
.content-wrapper {
  max-width: 820px;
  margin: 3rem auto 4rem;
  padding: 0 1rem;
  color: #236b60;
}

/* === FORM STYLES === */
main {
  flex: 1;
}

form {
  max-width: 820px;
  margin: 2rem auto 3rem;
  padding: 1.5rem 1.2rem;
  background: #f0f7f6;
  border-radius: 18px;
  box-shadow: 0 6px 14px rgba(35, 107, 96, 0.25);
  color: #236b60;
  font-family: 'Inter', sans-serif;
}

form label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

form input,
form textarea {
  width: 100%;
  padding: 0.6rem 0.8rem;
  margin-bottom: 1.3rem;
  border: 2px solid #44bba4;
  border-radius: 10px;
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  color: #083237;
  transition: border-color 0.3s ease;
}

form input:focus,
form textarea:focus {
  border-color: #fdd835;
  outline: none;
}

form button {
  background-color: #fdd835;
  color: #083237;
  font-weight: 700;
  border: none;
  padding: 1rem 2rem;
  border-radius: 12px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

form button:hover,
form button:focus {
  background-color: #fbc02d;
}

/* === FOOTER === */
footer {
  background: #236b60;
  color: #fdf5e6;
  text-align: center;
  padding: 1.6rem 1rem;
  font-size: 0.9rem;
}
footer a {
  color: #fdd835;
  text-decoration: underline;
}

/* === ANIMATIONS === */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  nav {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .mobile-nav {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    right: 0;
    width: 100%;
    background: #e6f2f1;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    border-top: 2px solid #44bba4;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .mobile-nav.open {
    max-height: 400px;
  }
  .mobile-nav a {
    padding: 1rem;
    border-bottom: 1px solid #cde6e3;
    color: #236b60;
  }
  .mobile-nav a:hover,
  .mobile-nav a:focus {
    background-color: #44bba4;
    color: white;
  }
  .features {
    flex-direction: column;
    align-items: center;
  }
  .hero h1 {
    font-size: 2rem;
  }
}