:root {
  --bg-página: #121212;
  --bg-secção: #1e1e1e;
  --bg-nav: #2d2d2d;
  --acento: #ffffff;
  --texto-principal: #eeeeee;
  --texto-secundário: #b0b0b0;
  --borda: #333333;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  background-color: var(--bg-página);
  color: var(--texto-principal);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 30px 10%;
  background-color: var(--bg-secção);
  border-bottom: 2px solid var(--borda);
}

header p {
  margin: 0;
  color: var(--texto-secundário);
  font-weight: bold;
}

nav {
  background-color: var(--bg-nav);
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

nav ul {
  display: flex;
  justify-content: center;
  gap: 30px;
  list-style: none;
  margin: 0;
  padding: 0;
}

nav a {
  color: var(--texto-principal);
  text-decoration: none;
  font-weight: bold;
  padding: 5px 15px;
  transition: all 0.3s ease;
}

nav a:hover {
  color: var(--acento);
  background-color: rgba(255,255,255,0.1);
  border-radius: 5px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 2rem;
  color: white;
  cursor: pointer;
}

main {
  flex-grow: 1;
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px 20px;
  width: 100%;
}

section {
  background-color: var(--bg-secção);
  padding: 40px;
  margin-bottom: 40px;
  border-radius: 12px;
  border: 1px solid var(--borda);
  box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

h2 {
  margin-top: 0;
  color: var(--acento);
  border-left: 4px solid var(--acento);
  padding-left: 15px;
}

#sobre {
  display: flex;
  align-items: center;
  gap: 40px;
}

#sobre img {
  width: 250px;
  height: 250px;
  object-fit: cover;
  border-radius: 20px;
  border: none;
  box-shadow: 0 8px 15px rgba(0,0,0,0.5);
}

.projetos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
}

figure {
  margin: 0;
  background-color: var(--bg-nav);
  border-radius: 15px;
  overflow: hidden;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--borda);
}

figure:hover {
  transform: translateY(-10px);
  border-color: var(--acento);
  box-shadow: 0 10px 20px rgba(0,0,0,0.4);
}

.destaque {
  order: -1;
  border: 2px solid var(--acento);
}

figure img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

figcaption {
  padding: 20px;
  text-align: center;
  font-weight: bold;
}

#contactos ul {
  display: flex;
  justify-content: center;
  gap: 20px;
  list-style: none;
  padding: 0;
  flex-wrap: wrap;
}

#contactos a {
  color: var(--acento);
  text-decoration: none;
  border: 1px solid var(--acento);
  padding: 8px 20px;
  border-radius: 5px;
  transition: all 0.3s ease;
}

#contactos a:hover {
  background-color: var(--acento);
  color: var(--bg-página);
}

iframe {
  width: 100%;
  border-radius: 10px;
  filter: invert(90%) hue-rotate(180deg) brightness(0.8);
  margin-bottom: 30px;
  pointer-events: none;
}

form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 600px;
  margin: 0 auto;
}

input, select, textarea {
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--borda);
  background-color: var(--bg-página);
  color: white;
  font-size: 1rem;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--acento);
}

button {
  background-color: #444444;
  color: white;
  border: 1px solid #666666;
  padding: 15px 40px;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  align-self: center;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
}

button:hover {
  background-color: var(--acento);
  color: var(--bg-página);
  transform: scale(1.05);
}

footer {
  background-color: var(--bg-secção);
  text-align: center;
  padding: 30px;
  border-top: 1px solid var(--borda);
  color: var(--texto-secundário);
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  nav ul {
    display: none;
    flex-direction: column;
    position: absolute;
    width: 100%;
    background-color: var(--bg-nav);
    left: 0;
    top: 55px;
    padding: 20px;
    border-bottom: 2px solid var(--borda);
  }
  nav ul.aberto {
    display: flex;
  }
  #sobre {
    flex-direction: column;
    text-align: center;
  }
  #sobre img {
    width: 200px;
    height: 200px;
  }
}