/* RESET */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Arial', sans-serif;
}
/* BACKGROUND GLOBAL */
body {
  background-color: #0a1f44; /* bleu foncé FFF */
  color: #ffffff;
}
/* HEADER */
header {
  background-color: #001a33;
  padding: 20px;
  text-align: center;
  border-bottom: 3px solid #e30613; /* rouge FFF */
}
header h1 {
  font-size: 28px;
  letter-spacing: 2px;
}
/* NAVIGATION */
nav {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-top: 10px;
}
nav a {
  color: white;
  text-decoration: none;
  font-weight: bold;
  transition: 0.3s;
}
nav a:hover {
  color: #e30613; /* rouge */
}
/* BUTTON */
.btn {
  background-color: #e30613;
  color: white;
  padding: 12px 25px;
  border: none;
  border-radius: 30px;
  cursor: pointer;
  transition: 0.3s;
  font-weight: bold;
}
.btn:hover {
  background-color: white;
  color: #0a1f44;
}
/* CARD */
.card {
  background-color: white;
  color: #0a1f44;
  padding: 20px;
  border-radius: 10px;
  margin: 20px;
  box-shadow: 0px 5px 15px rgba(0,0,0,0.3);
}
/* TITLES */
h2 {
  border-left: 5px solid #e30613;
  padding-left: 10px;
  margin-bottom: 15px;
}/* INPUTS */
input, textarea, select {
  width: 100%;
  padding: 12px 15px;
  margin: 10px 0;
  border: 2px solid #ffffff;
  border-radius: 8px;
  background-color: transparent;
  color: white;
  font-size: 14px;
  outline: none;
  transition: 0.3s;
}
/* Placeholder */
input::placeholder,
textarea::placeholder {
  color: rgba(255, 255, 255, 0.6);
}
/* Focus (effet au clic) */
input:focus,
textarea:focus,
select:focus {
  border-color: #e30613; /* rouge FFF */
  box-shadow: 0 0 8px rgba(227, 6, 19, 0.5);
}
/* SELECT */
select {
  background-color: #0a1f44;
  cursor: pointer;
}
/* FORM */
form {
  max-width: 500px;
  margin: 30px auto;
}
/* LABEL */
label {
  font-weight: bold;
  margin-top: 10px;
  display: block;
}