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

/* BACKGROUND IMAGE */
body {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Inter', sans-serif;
  color: white;

  background: url("fond.png") no-repeat center center/cover;
}

/* DARK OVERLAY POUR LISIBILITÉ */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(2px);
  z-index: 0;
}

/* CONTENEUR */
.form-container {
  position: relative;
  z-index: 1;

  width: 100%;
  max-width: 500px;
  padding: 40px;
  border-radius: 20px;

  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(15px);

  border: 1px solid rgba(255,255,255,0.2);

  box-shadow:
    0 10px 40px rgba(0,0,0,0.7),
    0 0 25px rgba(255,255,255,0.15),
    0 0 60px rgba(255,255,255,0.08);

  overflow: hidden;
}

/* TITRE */
.form-title {
  font-family: 'Orbitron', sans-serif;
  text-align: center;
  margin-bottom: 30px;
  letter-spacing: 2px;
}

/* GROUPES */
.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  opacity: 0.8;
}

/* INPUTS */
input,
textarea {
  width: 100%;
  padding: 12px;
  border-radius: 10px;

  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.05);

  color: white;
  outline: none;

  transition: 0.3s;
}

input::placeholder,
textarea::placeholder {
  color: rgba(255,255,255,0.4);
}

input:focus,
textarea:focus {
  border-color: white;
  box-shadow: 0 0 12px rgba(255,255,255,0.2);
}

/* ROW */
.row {
  display: flex;
  gap: 10px;
}

.row .form-group {
  flex: 1;
}

/* TEXTAREA */
textarea {
  min-height: 120px;
  resize: none;
}

/* BOUTON */
button {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 12px;

  background: linear-gradient(90deg, #ffffff, #bfbfbf);
  color: black;

  font-family: 'Orbitron', sans-serif;
  letter-spacing: 1px;

  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(255,255,255,0.2);
}