/* ---------- GENERAL ---------- */
html, body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  font-family: "Helvetica Neue", Arial, sans-serif;
  color: #1d3557;
  background-color: #F1E3D3;
  line-height: 1.6;
}

/* -------------------------- HEADER/NAV-BAR*/

header {
    background-color: #1d3557;                                  /* HEADER COLOR */
    position: sticky; top: 0; 
    z-index: 1000;
}

.navbar {
    max-width: 1200px; margin: 0 auto; padding: 1rem 2rem; display: flex; justify-content: space-between; align-items: center; 
}

/* -------------------------- LOGO */
.navbar .logo a {
    color: #457b9d;                                             /* LOGO TEXT COLOR */
    text-decoration: none; /* remove underline */
    font-size: 1.8rem; /* larger font size */
    font-weight: bold; /* bold */
    letter-spacing: 0.5px; /* letter spacing */
}

/* -------------------------- NAV LINKS */
.nav-links {
    list-style: none;margin: 0;padding: 0; display: flex; gap: 25px;
}

.nav-links a {
    color: #457b9d;                                             /* NAV LINK COLORS */
    text-decoration: none; /*remove underline */
    padding: 0.5rem 1rem; /* increase clickable area */
    transition: background-color 0.3s ease, color 0.3s ease;
    border-radius: 5px;
    font-weight: bold; /*bold*/
}

.nav-links a:hover,
.nav-links a:focus {
    background-color: #F1E3D3;                                  /* HOVER COLOR*/
    color: #1d3557; 
}

/* ---------- MAIN SECTION ---------- */
.category-page-main {
  max-width: 1100px;
  margin: 60px auto;
  padding: 0 20px;
}

.category-page-title {
  font-size: 2.6rem;
  text-align: left;
  margin-bottom: 16px;
  color: #1d3557;
}

.category-page-description {
  text-align: left;
  max-width: 800px;
  color: #457b9d;
  font-size: 1.1rem;
}

/* ---------- SUMMARY SECTIONS ---------- */
.summary-section {
  text-align: left;
  max-width: 800px;
}

.summary-section h2 {
  font-size: 2rem;
  margin-bottom: 15px;
  color: #1d3557;
}

.summary-section p {
  color: #457b9d;
  font-size: 1.1rem;
}

/* ---------- PROJECTS ---------- */
.project-detail-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 100px;
}

/* alternate layout */
.project-detail-item:nth-of-type(even) {
  flex-direction: row-reverse;
}

/* two images side by side */
.project-detail-images {
  flex: 1 1 45%;
  display: flex;
  gap: 15px;
}

.project-detail-images img {
  width: 50%;
  height: auto;
  border-radius: 8px;
  object-fit: cover;
}

.project-detail-content {
  flex: 1 1 50%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
}

.project-detail-content h2 {
  font-size: 1.8rem;
  margin-bottom: 6px;
  color: #1d3557;
}

.project-detail-content p {
  color: #457b9d;
  font-size: 1rem;
}

.project-detail-content ul {
  list-style: none;
  padding: 0;
}

.project-detail-content li {
  background-color:#457b9d;
  padding: 8px 12px;
  border-radius: 6px;
  margin-bottom: 8px;
  color:#F1E3D3;
  font-size: 0.95rem;
}

/* ---------- FOOTER ---------- */
footer {
  background-color: #1d3557;
  color: #F1E3D3;
  text-align: center;
  padding: 30px 20px;
  font-size: 0.9rem;
  line-height: 1.5;
}

footer a {
  color: #a8dadc;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
  .project-detail-item,
  .project-detail-item:nth-of-type(even) {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .project-detail-images {
    flex-direction: column;
  }

  .project-detail-images img {
    width: 100%;
  }

  .project-detail-content {
    flex: 1 1 100%;
  }

  .category-page-main {
    margin: 60px auto;
  }
}