:root {
  --base1: #ffffff;
  --base2: #1E1E1E;
  --blueDetail1: #0F304A;
  --blueDetail2: #A9C4DA;
  --beige1: #F5EDE0;
  --beige2: #F1ECE5;
}

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

html { 
  scroll-behavior: smooth; 
}

body {
  font-family: Arial, sans-serif;
  color: var(--base2);
  line-height: 1.6;
  background: var(--base1);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--beige1);
  padding: 1rem 1.5rem;
  box-shadow: 0 2px 8px rgba(169, 196, 218, 0.5);
  position: sticky;
  width: 100%;
  top: 0;
  z-index: 100;
}

.logo {
  height: 45px;
  width: auto;
}

.hamburger {
  display: block;
  font-size: 2rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--blueDetail1);
}

.navLinks {
  display: none;
  flex-direction: column;
  position: absolute;
  top: 70px;
  left: 0;
  width: 100%;
  background: var(--beige1);
  padding: 1rem 0;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  list-style: none;
  text-align: center;
}

.navLinks li { 
  margin: 1rem 0; 
}

.navLinks a {
  text-decoration: none;
  color: var(--base2);
  font-weight: bold;
}

.navLinks a:hover {
  color: var(--base1);
  background-color: var(--blueDetail1);
}

.navLinks.active {
  display: flex;
}

.contactBtn {
  background: var(--blueDetail2);
  color: var(--base2);
  padding: 0.7rem 1.2rem;
  border-radius: 25px;
}

/* Hero */
.hero {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  padding: 2rem 2rem;
}

.heroImg {
  width: 90%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--base2);
  font-weight: bold;
  font-size: 1.2rem;
  flex-shrink: 0;
  border-radius: 5% 5% 5% 5%;
}

.heroText {
  max-width: 500px;
  padding: 3rem 2rem;
}

.heroText p {
  font-size: 1.2rem;
  color: var(--base2);
  margin: 0;
}

.heroText h1 {
  font-size: 2.5rem;
  color: var(--blueDetail1);
  margin: 0;
}

.heroText h3 {
  font-size: 1.4rem;
  font-weight: normal;
  color: var(--base2);
  margin: 0;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: 30px;
  font-size: 1rem;
  font-weight: bold;
  text-decoration: none;
  margin-top: 2rem;
  margin-right: 0.5rem;
  transition: all 0.3s ease;
  background: var(--blueDetail2);
  color: var(--base2);
}

.btn:hover {
  background: var(--blueDetail1);
  color: var(--base1);
}

/* Algemene container */
.profiel {
  padding: 3rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

/* Over mij + opleidingen naast elkaar */
.overMijContainer {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-bottom: 3rem;
}

.overMij, .opleidingen {
  flex: 1;
  background-color: var(--base1);
}

.overMij h2, .opleidingen h2 {
  color: var(--blueDetail1);
  margin-bottom: 1rem;
}

.overMij p {
  background-color: var(--blueDetail2);
  padding: 1.5rem;
  border-radius: 10px;
  line-height: 1.6;
}

/* Opleidingen lijst */
.opleidingenLijst {
  list-style: none;
  padding: 0;
  margin: 0;
}

.opleidingenLijst li {
  border-left: 4px solid var(--blueDetail1);
  padding: 1rem 1.5rem;
  margin-bottom: 1rem;
  border-radius: 6px;
  background-color: var(--base1);
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

.opleidingenLijst li strong {
  display: block;
  font-size: 1.1rem;
  color: var(--base2);
}

.opleidingenLijst li span {
  font-size: 0.9rem;
  color: #555;
}

/* Kennis */
.kennis {
  background-color: var(--beige1);
  padding: 1rem 2rem;
  text-align: center;
}

.kennis h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: var(--base2);
}

.kennis p {
  margin-bottom: 2rem;
  color: var(--base2);
}

.kennis h3 {
  margin-top: 2rem;
  margin-bottom: 1rem;
  text-align: left;
  color: var(--base2);
  max-width: 1100px;   
  margin-left: auto;  
  margin-right: auto; 
}

.skillsGrid {
  list-style: none;
  padding: 0;
  margin: 0 auto 2rem auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  max-width: 1100px;
}

.skillsGrid li {
  background-color: var(--base1);
  border: 2px solid var(--blueDetail1);
  border-radius: 10px;
  padding: 1rem;
  font-weight: 500;
  color: var(--base2);
  transition: all 0.3s ease;
}

.skillsGrid li:hover {
  background-color: var(--blueDetail2);
  transform: translateY(-4px);
  cursor: default;
}

/* Projecten */
.projecten {
  padding: 4rem 2rem;
  text-align: center;
}

.projecten h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: var(--base2);
}

.projecten p {
  margin-bottom: 2rem;
  color: var(--base2);
  text-align: left;
  max-width: 1000px;
  margin: 0 auto;
  padding-bottom: 2rem;
}

.filterButtons {
  margin-bottom: 2rem;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.8rem;
  color: var(--base2);
}

.tag {
  border: none;
  border-radius: 20px;
  padding: 0.6rem 1.2rem;
  background-color: var(--blueDetail2);
  font-size: 0.9rem;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
}

.tag:hover {
  background-color: var(--blueDetail1);
  color: var(--base1);
}

.tag.active {
  background-color: var(--blueDetail1);
  color: var(--base1);
}

.projectGrid {
  list-style: none;
  padding: 0;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  max-width: 1000px;
}

.projectCard {
  border: 2px solid var(--blueDetail1);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
}

.projectCard:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(169, 196, 218, 0.5);
  position: relative;
}

.projectCard::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: calc(100% - 50px);
  background-color: rgba(169, 196, 218, 0.6);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
  pointer-events: none; 
}

.projectCard:hover::before {
  opacity: 1;
}

.projectImg {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  padding: 1rem;
  position: relative;
  z-index: 1;
}

.projectImg img {
  max-width: 150%;
  max-height: 100%;
  object-fit: contain;
}

.projectCard h3 {
  margin: 0;
  padding: 1rem;
  background-color: var(--blueDetail1);
  color: var(--base1);
  font-size: 1rem;
  text-align: center;
  z-index: 1;
  position: relative;
}

.projectLinks {
  text-decoration: none;
  color: inherit;
}

/* Contact */
.contact {
  background-color: var(--beige2);
  padding: 2rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contactLeft {
  flex: 1;
}

.contactLeft h2 {
  text-align: center;
  margin-bottom: 0.5rem;
  font-size: 2rem;
  color: var(--base2);
}

.contactLeft p {
  text-align: center;
  margin-bottom: 1.5rem;
  color: var(--base2);
}

.contactInfo {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

.contactInfo li {
  background: var(--blueDetail2);
  border-radius: 50px;
  width: 75%;
  height: 50px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s ease;
}

.contactInfo li:hover {
  background: var(--blueDetail1);
  color: var(--base1);
}

.contactLink {
  text-decoration: none;
  color: inherit;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contactForm {
  background: var(--base1);
  padding: 1.5rem;
  border-radius: 12px;
  border: 1px solid var(--blueDetail2);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 1rem;
  margin-left: 2rem;
  max-width: 90%;
}

.contactForm label {
  display: flex;
  flex-direction: column;
  font-size: 0.9rem;
  color: var(--base2);
  text-align: left;
}

.contactForm input, .contactForm textarea {
  padding: 0.6rem;
  border: 1px solid var(--blueDetail2);
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.9rem;
  resize: none;
}

.contactForm button {
  border: none;
  border-radius: 8px;
  padding: 0.8rem;
  background-color: var(--blueDetail2);
  color: var(--base2);
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.contactForm button:hover {
  background-color: var(--blueDetail1);
  color: var(--base1);
}

/* Footer */
footer {
  background-color: var(--blueDetail1);
  color: var(--base1);
  padding: 2rem;
  text-align: center;
}

.footerLinks {
  display:flex; 
  flex-wrap:wrap; 
  gap:2rem; 
  justify-content:center;
}

.footerLinks article {
  flex: 1;
  min-width: 150px;
}

.footerLinks h4 {
  margin-bottom: 1rem;
  font-size: 1rem;
  font-weight: 600;
}

.footerLinks ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footerLinks li {
  cursor: pointer;
  transition: color 0.3s ease;
}

.footerLinks a {
  text-decoration:none; 
  color:var(--base1);
}

.footerLinks a:hover {
  color: var(--blueDetail1);
  background-color: var(--beige1);
  font-weight: bold;
  padding: 0.5rem 1rem;
  text-decoration: underline;
}

footer p {
  font-size: 0.8rem;
  margin-top: 2rem;
}

@media (min-width: 800px) {

  nav {
    justify-content: center;   
    gap: 3.5rem;               
  }

  .hamburger { display: none; }

  .navLinks {
    display: flex;
    flex-direction: row;
    position: static;
    background: none;
    box-shadow: none;
    gap: 3.5rem;
    width: auto;
  }

  .hero {
    flex-direction: row;
    text-align: left;
  }

  .heroImg { width: 350px; }

  .heroText { padding: 2rem; }

  .skillsGrid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 700px;
    margin: 0 auto;
  }

  .overMijContainer {
    flex-direction: row;
    align-items: flex-start;
  }

  .overMij, .opleidingen {
    flex: 1;
  }

  .kennis h3 {
    margin-left: 4.5rem;
  }

  .projectGrid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 800px;
    margin: 0 auto;
  }

  .tag{
    padding: 0.65rem 1.3rem; 
    font-size: 1rem;
    font-weight: bold;
  }

  .contact {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
    gap: 4rem;
  }

  .contactLeft {
    flex: 1;
    max-width: 300px;
  }

  .contactLeft h2, .contactLeft p {
    text-align: left;
    margin-left: 2rem;
  }

  .contactInfo {
    align-items: stretch;
    width: 100%;
  }

  .contactInfo li {
    width: 100%;
    margin-left: 2rem;
  }

  .contactForm {
    flex: 1;
    max-width: 600px;
    margin-top: 6.5rem;
    margin-left: 0;
    margin-right: 2rem;
  }

  .footerLinks {
    flex-direction: row;
    justify-content: center;
    gap: 3rem;
  }
}

@media (min-width: 1024px) {
  .navLinks{
    font-size: 1.2rem;
  }

  .hero { padding: 4rem 2rem; }
  .heroImg { width: 400px; }
  .heroText h1 { font-size: 2.8rem; }
  .heroText h3 { font-size: 1.5rem; }

  .overMij {
    max-width: 1100px;
    margin: 0 auto;
    gap: 2rem;
  }
  .overMij article p { font-size: 1.1rem; }

  .skillsGrid {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    max-width: 1100px;
  }

  .kennis {
    padding: 2rem 2rem 5rem 2rem;
  }

  .projectGrid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    max-width: 1000px;
  }

  .tag{
    padding: 0.7rem 1.4rem; 
    font-size: 1rem;
    font-weight: bold;
  }

  .contact {
    gap: 6rem; 
    padding: 3rem 2rem;
  }

  .contactLeft {
    max-width: 320px; 
    margin-left: 5rem;
  }

  .contactForm {
    flex: 2;
    max-width: 600px; 
    margin-right: 6rem;
  }

}