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

:root {
  --bg: #000;
  --surface: #0d0d0d;
  --border: #222;
  --text: #f0f0f0;
  --muted: #888;
  --accent: #fff;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
}

/* NAV */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav-logo img {
  height: 36px;
  width: auto;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

nav ul a {
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color 0.2s;
}

nav ul a:hover {
  color: var(--accent);
}

/* HERO */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
}

.hero-logo {
  width: min(480px, 80vw);
  height: auto;
  margin-bottom: 1.5rem;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 2.5rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: background 0.2s, color 0.2s;
}

.btn:hover {
  background: var(--accent);
  color: var(--bg);
}

/* SECTIONS */
section {
  padding: 6rem 2rem;
  border-top: 1px solid var(--border);
}

.container {
  max-width: 800px;
  margin: 0 auto;
}

h2 {
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2rem;
}

#about p {
  font-size: 1.25rem;
  line-height: 1.8;
  color: var(--text);
}

/* CARDS */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1.75rem;
}

.card-tag {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
}

.card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0.75rem 0 0.5rem;
}

.card p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.6;
}

/* CONTACT */
#contact .container {
  text-align: center;
}

#contact p {
  color: var(--muted);
  margin-bottom: 2rem;
}

#contact .btn + .btn {
  margin-left: 1rem;
}

/* FOOTER */
footer {
  padding: 2rem;
  text-align: center;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--muted);
}

footer a:hover {
  color: var(--accent);
}