:root {
  --blue: #004052;
  --darkblue: #002b36;
  --darkerblue: #01232e;
  --white: #ffffff;
  --softwhite: #90bfcc;
  --hoverblue: #1d4955;
  --black: #000000;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Open Sans", "Helvetica Neue", sans-serif;
  font-size: 1.2em;
  background-color: var(--blue);
  color: var(--softwhite);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--darkblue);
  z-index: 1000;
  border-bottom: 1px solid var(--softwhite);
}

.site-nav {
  width: 100%;
}

.site-nav .nav-list {
  list-style-type: none;
  margin: 0;
  padding: 0;
  text-align: center;
}

.site-nav .nav-item {
  display: inline-block;
}

.site-nav .nav-item a {
  display: block;
  padding: 1em 1.5em;
  text-decoration: none;
  color: var(--softwhite);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.9rem;
}

.site-nav .nav-item a:hover,
.site-nav .nav-item a:focus {
  background-color: var(--hoverblue);
  color: var(--white);
}

/* About section layout */

.page-title {
  margin-bottom: 2.5rem;
  color: var(--white);
  font-size: 2.2rem;
  text-align: center;
}

.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  column-gap: 3rem;
}

.about-photo {
  margin: 0;
  display: flex;
  justify-content: flex-start;
}

.about-photo img {
  display: block;
  width: 100%;
  max-width: 360px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--darkblue);
  box-shadow: 0 0 25px var(--black);
}

.about-text h2 {
  margin-top: 0;
}

.about-details {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--softwhite);
}

.about-details h3 {
  margin-top: 0;
  color: var(--white);
  font-size: 1.4rem;
}

.about-details ul {
  padding-left: 1.2rem;
  margin: 0.5rem 0 0 0;
}

.about-details li {
  margin-bottom: 0.6rem;
}

.about-gallery {
  margin-top: 2rem;
}

.about-gallery h3 {
  margin-top: 0;
  color: var(--white);
  font-size: 1.3rem;
}

.about-gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.about-gallery-item {
  margin: 0;
}

.about-gallery-item img {
  display: block;
  width: 100%;
  border-radius: 12px;
  object-fit: cover;
  max-height: 180px;
  box-shadow: 0 0 14px var(--black);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.about-gallery-item img:hover,
.about-gallery-item img:focus {
  transform: scale(1.02);
  box-shadow: 0 0 22px var(--black);
}

.about-gallery-item figcaption {
  margin-top: 0.35rem;
  font-size: 0.9rem;
  opacity: 0.9;
}

main {
  margin-top: 90px;
}

.page-section {
  max-width: 1100px;
  margin: 0 auto 3rem auto;
  padding: 0 5rem;
  min-height: 90vh;
  scroll-margin-top: 80px;
}

.page-section h2 {
  color: var(--white);
  margin-top: 0;
}

/* Experience layout */

.experience-grid {
  display: grid;
  grid-auto-rows: minmax(0, 1fr);
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.experience-card {
  background-color: var(--darkblue);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 0 18px var(--black);
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.exp-logo {
  width: 70px;
  height: 70px;
  object-fit: contain;
  border-radius: 12px;
  background-color: var(--white);
  padding: 0.4rem;
  flex-shrink: 0;
}

.exp-text h3 {
  margin-bottom: 0.25rem;
  color: var(--white);
}

.exp-text .exp-company {
  margin-bottom: 0.25rem;
  font-weight: 600;
}

.exp-text .exp-dates {
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
  opacity: 0.9;
}

/* Projects carousel layout */

#proj-carousel {
  margin-top: 1.5rem;
}

#proj-carousel .carousel-inner {
  border-radius: 12px;
  overflow: hidden;
  background-color: var(--darkblue);
  box-shadow: 0 0 18px var(--black);
}

#proj-carousel .carousel-item {
  padding: 2rem 3.5rem;
}

.project-card {
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
}

.project-image {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: contain;
  background-color: transparent;
  border-radius: 8px;
  padding: 0.4rem;
  margin-bottom: 1rem;
}

.project-body {
  flex: 1;
}

.project-card h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  color: var(--white);
}

.project-tagline {
  font-style: italic;
  margin-bottom: 0.75rem;
}

.project-tools {
  margin-top: 0.75rem;
  font-size: 0.9em;
  opacity: 0.9;
}

.project-link {
  margin-top: 1.25rem;
  align-self: flex-start;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--softwhite);
  text-decoration: none;
}

.project-link:hover,
.project-link:focus {
  color: var(--white);
  text-decoration: underline;
}

#proj-carousel .carousel-control-prev,
#proj-carousel .carousel-control-next {
  width: 5%;
}

/* Contact form */

.contact-form {
  margin: 1.5rem auto 0;
  max-width: 640px;
  background-color: var(--darkblue);
  padding: 1.75rem;
  border-radius: 12px;
  box-shadow: 0 0 18px var(--black);
}

.contact-form .form-row {
  margin-bottom: 1rem;
}

.contact-form label {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
  color: var(--softwhite);
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--softwhite);
  background-color: var(--darkerblue);
  color: var(--softwhite);
  font-size: 0.95rem;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--softwhite);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--softwhite);
  box-shadow: 0 0 0 2px var(--darkblue);
}

.contact-submit {
  margin-top: 0.5rem;
  padding: 0.6rem 1.5rem;
  border-radius: 999px;
  border: none;
  background-color: var(--hoverblue);
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

.contact-submit:hover,
.contact-submit:focus {
  background-color: var(--softwhite);
  color: var(--black);
}

.form-help {
  font-size: 0.8rem;
  opacity: 0.8;
  margin-top: 0.25rem;
}

/* Responsive styles */

@media (max-width: 700px) {
  .site-nav .nav-item {
    width: 100%;
  }

  .site-nav .nav-item a {
    padding: 0.75em 1em;
    text-align: left;
  }

  main {
    margin-top: 200px;
  }

  .page-section {
    scroll-margin-top: 200px;
    padding: 0 2.5rem;
  }

  .about-layout {
    grid-template-columns: 1fr;
    row-gap: 1.5rem;
    text-align: center;
  }

  .about-photo {
    justify-content: center;
  }

  .about-photo img {
    max-width: 220px;
  }

  .about-text {
    text-align: center;
  }

  .about-details {
    text-align: left;
  }

  .experience-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .exp-logo {
    width: 60px;
    height: 60px;
  }

  /* Projects carousel: reduce padding on slides */
  #proj-carousel .carousel-item {
    padding: 1.5rem 1.5rem;
  }

  .project-card {
    padding: 1.25rem;
  }

  .project-image {
    max-height: 310px;
  }
}