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

body {
    font-family: 'Inter', sans-serif;
    background-color: #FAFAFA;
    color: #111111;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    justify-content: space-between;
    align-items: center;
    padding: 60px 20px;
    text-align: center;
    line-height: 1.6;
}

main {
    max-width: 600px;
    width: 100%;
}

/* En-tête & Identité visuelle (Logo + Titre) */
header {
    width: 100%;
    max-width: 600px;
    text-align: center;
}

.brand-link {
    text-decoration: none;
    display: inline-block;
    margin-bottom: 25px;
}

.logo-img {
    max-width: 150px; /* Taille optimisée pour accompagner le texte */
    height: auto;
    display: block;
    margin: 0 auto 15px auto;
}

.brand-title {
    font-size: 1.3rem;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: #111;
    margin-bottom: 5px;
}

.brand-subtitle {
    font-size: 0.8rem;
    font-weight: 300;
    color: #666;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* Page d'accueil (index.php) */
.announcement {
    margin-top: 20px;
}

.announcement h1 {
    font-size: 1.15rem;
    font-weight: 400;
    margin-bottom: 15px;
    color: #222;
    letter-spacing: 0.5px;
}

.announcement p {
    font-size: 0.95rem;
    color: #555;
    font-weight: 300;
    margin-bottom: 40px;
}

.btn-contact {
    display: inline-block;
    padding: 12px 30px;
    background-color: #111;
    color: #FFF;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 2px;
    transition: background-color 0.2s ease;
}

.btn-contact:hover {
    background-color: #333;
}

/* Formulaire de contact (contact.php) */
.contact-form {
    text-align: left;
    background: #FFFFFF;
    padding: 30px;
    border: 1px solid #EAEAEA;
    border-radius: 4px;
    margin-bottom: 30px;
}

.contact-form h1 {
    font-size: 1.1rem;
    font-weight: 400;
    margin-bottom: 20px;
    color: #222;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: #333;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #DDD;
    border-radius: 2px;
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    background-color: #FCFCFC;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #111;
    background-color: #FFF;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

button[type="submit"] {
    width: 100%;
    padding: 12px;
    background-color: #111;
    color: #FFF;
    border: none;
    border-radius: 2px;
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

button[type="submit"]:hover {
    background-color: #333;
}

/* Messages d'alerte */
.alert {
    padding: 12px;
    margin-bottom: 20px;
    font-size: 0.85rem;
    border-radius: 2px;
    text-align: center;
}

.alert-success {
    background-color: #E6F4EA;
    color: #137333;
    border: 1px solid #CEEAD6;
}

.alert-error {
    background-color: #FCE8E6;
    color: #C5221F;
    border: 1px solid #FAD2CF;
}

.back-home {
    display: inline-block;
    font-size: 0.85rem;
    color: #666;
    text-decoration: none;
    letter-spacing: 0.5px;
    transition: color 0.2s;
}

.back-home:hover {
    color: #111;
}

/* Pied de page */
footer {
    font-size: 0.8rem;
    color: #888;
    font-weight: 300;
    letter-spacing: 0.5px;
}