* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', Arial, sans-serif;
  background: #0c0c0c;
  color: #ffffff;
  line-height: 1.6;
}

/* HEADER */
header {
  padding: 24px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #1e1e1e;
  background: #0c0c0c;
}

header strong {
  font-size: 18px;
  letter-spacing: 1px;
}

nav a {
  color: #b5b5b5;
  text-decoration: none;
  margin-left: 24px;
  font-size: 14px;
  transition: color 0.2s ease;
}

nav a:hover {
  color: #ffffff;
}

/* SECTIONS */
section {
  padding: 100px 24px;
  max-width: 1100px;
  margin: auto;
}

h1 {
  font-size: 44px;
  margin-bottom: 16px;
}

h2 {
  font-size: 24px;
  margin-top: 40px;
}

p {
  color: #cfcfcf;
  max-width: 720px;
}

/* BUTTONS */
button {
  background: #ffffff;
  color: #000000;
  padding: 14px 30px;
  border-radius: 999px;
  border: none;
  font-weight: 600;
  cursor: pointer;
  margin-top: 24px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(255,255,255,0.15);
}

/* INPUTS */
input {
  width: 100%;
  max-width: 360px;
  padding: 14px 16px;
  margin-top: 12px;
  background: #121212;
  border: 1px solid #1f1f1f;
  border-radius: 8px;
  color: white;
  font-size: 14px;
}

input:focus {
  outline: none;
  border-color: #ffffff;
}

/* CARDS */
.card {
  margin-top: 40px;
  padding: 32px;
  border-radius: 16px;
  background: #111111;
  border: 1px solid #1f1f1f;
}

/* FOOTER */
footer {
  border-top: 1px solid #1e1e1e;
  padding: 40px 20px;
  text-align: center;
  font-size: 13px;
  color: #888;
}

footer a {
  color: #aaa;
  text-decoration: none;
  margin: 0 10px;
}

footer a:hover {
  color: #ffffff;
}