:root {
  --bg: #faf9f6;
  --accent: #a3c4f3;
  --accent2: #f8b3d0;
  --text: #1f1f1f;
  --card-bg: #ffffffc7;
  --border-color: #ddd;
  --shadow: 0 3px 10px rgba(0,0,0,0.06);
}

body {
  font-family: "Inter", sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  line-height: 1.6;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  padding: 1rem 2rem;
  color: white;
}

nav a {
  color: white;
  text-decoration: none;
  margin: 0 0.8rem;
  font-weight: 600;
  transition: opacity 0.2s ease;
}

nav a:hover {
  opacity: 0.7;
}

.lang-switch button {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  margin-left: 0.4rem;
  opacity: 0.8;
  transition: transform 0.2s, opacity 0.2s;
}

.lang-switch button.active,
.lang-switch button:hover {
  opacity: 1;
  transform: scale(1.1);
}

main {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.button {
  display: inline-block;
  background: var(--accent2);
  color: white;
  padding: 0.6rem 1.2rem;
  border-radius: 0.6rem;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.2s;
}

.button:hover {
  background: var(--accent);
}

.project-item, .software-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  margin-bottom: 1.5rem;
  transition: transform 0.2s;
}

.project-item:hover, .software-card:hover {
  transform: translateY(-3px);
}