/* ================= GLOBAL ================= */

body {
  font-family: 'Space Grotesk', sans-serif;
  background: #ffffff;
  color: #000;
  margin: 0;
  padding-top: 70px;
}

section {
  padding: 6rem 1.5rem;
}

/* ================= NAVBAR ================= */

.navbar-brand {
  font-weight: 800;
  letter-spacing: 0.05em;
}

.nav-link {
  font-weight: 600;
  margin-left: 1.5rem;
  color: #555 !important;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: #000 !important;
}

/* ================= HERO ================= */

.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
}

.hero p {
  font-family: 'Space Mono', monospace;
  margin-top: 1rem;
  color: #666;
}

/* ================= TREE ================= */

.tree-section {
  background: #f7f7f7;
}

.tree-container {
  max-width: 1100px;
  margin: auto;
  text-align: center;
}

.tree-row {
  display: flex;
  justify-content: center;
  gap: 4rem;
  margin-top: 3rem;
  flex-wrap: wrap;
}

.tree-node {
  padding: 1rem 2rem;
  border: 1px solid #ddd;
  background: #fff;
  min-width: 180px;
  font-weight: 600;
  transition: all 0.25s ease;
  cursor: pointer;
}

.tree-node:hover {
  background: #000;
  color: #fff;
  border-color: #000;
  transform: translateY(-6px);
}

.root {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 2rem;
}

.leaf {
  background: #fafafa;
}

/* ================= ABOUT ================= */

.about-section {
  background: #ffffff;
  text-align: center;
}

.about-content {
  max-width: 800px;
  margin: auto;
}

.about-content h2 {
  font-weight: 800;
  margin-bottom: 1.5rem;
}

.about-content p {
  font-family: 'Space Mono', monospace;
  color: #444;
  line-height: 1.6;
}

/* ================= RESPONSIVE ================= */

@media (max-width: 768px) {
  .tree-row {
    gap: 1.5rem;
  }

  .tree-node {
    min-width: 140px;
    padding: 0.8rem 1.2rem;
  }

  .nav-link {
    margin-left: 0;
  }
}