/* RESET — retire marges/paddings et uniformise le rendu */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* BASE */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #111;
    color: #eee;
    line-height: 1.6;
    padding-bottom: 40px;
}

/* ============================
   NAVIGATION WAVE
   ============================ */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 35px;
    background: #1a1a1a;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid #222;
}

/* LOGO */
nav .logo {
    font-size: 1.6em;
    font-weight: bold;
    color: #4da6ff;
    letter-spacing: 1px;
}

/* LIENS DE NAVIGATION */
nav .nav-links {
    display: flex;
    align-items: center;
    gap: 18px;
}

nav .nav-links a {
    text-decoration: none;
    color: #eee;
    font-weight: 500;
    transition: color 0.25s, opacity 0.25s;
}

nav .nav-links a:hover {
    color: #4da6ff;
    opacity: 0.85;
}

nav .nav-links a[style*="red"] {
    color: #ff4d4d !important;
}

/* ============================
   TITRES & STRUCTURE GÉNÉRALE
   ============================ */
h1 {
    text-align: center;
    margin: 25px 0 10px;
    color: #4da6ff;
}

main.container {
    max-width: 600px;
    margin: auto;
    padding: 20px;
}

/* ============================
   FORMULAIRES (connexion / inscription)
   ============================ */
form {
    background: #1a1a1a;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid #222;
    margin-top: 20px;
}

label {
    font-weight: 500;
    margin-bottom: 8px;
    display: block;
}

input {
    width: 100%;
    padding: 10px;
    margin: 8px 0 16px;
    border-radius: 8px;
    border: 1px solid #444;
    background: #111;
    color: #eee;
}

button,
input[type="submit"] {
    display: inline-block;
    padding: 12px 22px;
    background: #4da6ff;
    color: white;
    border: none;
    border-radius: 25px;
    font-weight: 600;
    margin-top: 10px;
    cursor: pointer;
    transition: background 0.25s;
}

button:hover {
    background: #3385cc;
}

/* Messages d'erreur / succès */
article {
    padding: 12px;
    border-radius: 10px;
    margin: 15px 0;
    background: #330000;
    border: 1px solid #660000;
    color: #ff7777;
}

.success {
    background: #003300;
    border-color: #006600;
    color: #77ff77;
}

/* ============================
   LIENS SECONDS
   ============================ */
p a {
    color: #4da6ff;
    text-decoration: none;
}

p a:hover {
    text-decoration: underline;
}

/* ============================
   FOOTER
   ============================ */
footer {
    text-align: center;
    padding: 20px;
    background: #1a1a1a;
    border-top: 1px solid #222;
    color: #888;
    margin-top: 40px;
}

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 650px) {
    nav {
        flex-direction: column;
        gap: 10px;
        padding: 12px 20px;
    }
    nav .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
}