:root {
  --bg: #f8f8f8;
  --text: #111;
  --muted: #666;
  --border: #ddd;
}

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

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

/* ================= NAV ================= */

.nav {
  max-width: 1100px;
  margin: 40px auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
}

.nav a {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
}

.logo {
  font-weight: 700;
}

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

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

.hero h1 {
  font-size: 3rem;
}

.tagline {
  margin-top: 10px;
  color: var(--muted);
}

.hero-actions {
  margin-top: 30px;
  display: flex;
  gap: 15px;
}

/* ================= BUTTONS ================= */
/* dull by default, black on hover / click */

.btn {
  padding: 10px 22px;
  border: 1px solid var(--border);
  background: transparent;
  text-decoration: none;
  color: var(--muted);
  transition: all 0.2s ease;
}

.btn:hover,
.btn:active,
.btn:focus {
  border-color: var(--text);
  color: var(--text);
  outline: none;
}

/* ================= CONTENT ================= */

.container {
  max-width: 700px;
  margin: 60px auto;
  padding: 0 20px;
}

section {
  margin-bottom: 50px;
}

h2 {
  font-size: 2rem;
  margin-bottom: 10px;
}

h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.muted {
  color: var(--muted);
  font-size: 0.9rem;
}

.list {
  list-style: none;
}

.list li {
  margin-bottom: 8px;
}

.links a {
  display: inline-block;
  margin-right: 15px;
  margin-bottom: 10px;
  text-decoration: none;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

/* ================= FOOTER ================= */

footer {
  text-align: center;
  padding: 40px 0;
  color: var(--muted);
  font-size: 0.85rem;
}

/* ================= ANIMATIONS ================= */

.fade-in {
  opacity: 0;
  transform: translateY(15px);
  animation: fade 0.8s ease forwards;
}

@keyframes fade {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}