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

body {
  font-family: 'Inter', sans-serif;
  background: #0f172a;
  color: #e2e8f0;
}

/* NAVBAR */
header {
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(10px);
  padding: 15px 40px;
  position: sticky;
  top: 0;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav ul {
  display: flex;
  gap: 20px;
  list-style: none;
}

nav a {
  color: #e2e8f0;
  text-decoration: none;
  font-weight: 500;
  transition: 0.3s;
}

nav a:hover {
  color: #38bdf8;
}

/* TITRES */
h1 {
  text-align: center;
  margin: 40px 0;
  font-size: 2.5rem;
}

/* CARDS */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
  padding: 20px;
}

.card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 15px;
  padding: 20px;
  backdrop-filter: blur(10px);
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-10px);
}

.card img {
  width: 60px;
  margin-bottom: 10px;
}

.card h2 {
  margin-bottom: 10px;
}

.btn {
  display: inline-block;
  margin-top: 10px;
  padding: 10px 15px;
  border-radius: 10px;
  background: #38bdf8;
  color: black;
  text-decoration: none;
  transition: 0.3s;
}

.btn:hover {
  background: #0ea5e9;
}

/* PROFIL */
.profile {
  max-width: 500px;
  margin: auto;
  background: rgba(255,255,255,0.05);
  padding: 20px;
  border-radius: 15px;
}

.profile img {
  width: 120px;
  border-radius: 50%;
  margin: 20px auto;
  display: block;
}

/* FORMULAIRE */
.form {
  max-width: 500px;
  margin: auto;
  background: rgba(255,255,255,0.05);
  padding: 20px;
  border-radius: 15px;
}

.form input {
  width: 100%;
  padding: 10px;
  margin: 10px 0;
  border-radius: 10px;
  border: none;
}

.form input[type="submit"] {
  background: #38bdf8;
  cursor: pointer;
}

/* FOOTER */
footer {
  margin-top: 50px;
  text-align: center;
  padding: 20px;
  background: #020617;
}

.demo {
  margin-top: 10px;
  padding: 10px;
  background: #1e293b;
}

.flex-demo {
  display: flex;
  gap: 10px;
}

.grid-demo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.demo div {
  background: #38bdf8;
  padding: 20px;
  text-align: center;
}

textarea {
  width: 100%;
  height: 120px;
  margin-top: 10px;
  background: black;
  color: #38bdf8;
  padding: 10px;
}