:root {
    --primary: #1e3a8a;
    --success: #10b981;
    --bg: #cbd5e1;
    --card-bg: #ffffff;
    --text-slate: #64748b;
    --error: #ef4444;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', sans-serif; }

body { 
    background-color: var(--bg); 
    display: flex; align-items: center; justify-content: center; 
    min-height: 100vh; padding: 20px;
}

.login-card {
    background: var(--card-bg); width: 100%; max-width: 400px;
    padding: 2.5rem; border-radius: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    text-align: center;
}

.logo { width: 80px; margin-bottom: 1rem; }

h1 { font-weight: 900; text-transform: uppercase; color: #0f172a; font-size: 1.5rem; margin-bottom: 5px; }

.badge { 
    display: inline-block; background: #eff6ff; color: var(--primary);
    font-size: 10px; font-weight: 800; padding: 5px 12px; 
    border-radius: 8px; text-transform: uppercase; letter-spacing: 1px;
}

.form-group { text-align: left; margin-top: 1.5rem; }

label { font-size: 11px; font-weight: 800; color: var(--text-slate); text-transform: uppercase; margin-bottom: 8px; display: block; }

.input-container { position: relative; }

.input-container i {
    position: absolute; left: 18px; top: 50%; transform: translateY(-50%);
    color: #94a3b8; font-size: 1.1rem; z-index: 10;
}

input {
    width: 100%; padding: 15px 45px 15px 50px;
    border: 2px solid #e2e8f0; border-radius: 1.2rem;
    background: #f8fafc; font-size: 1rem; font-weight: 600; 
    outline: none; transition: 0.3s;
}

input:focus { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.1); }

/* Styles spécifiques pour le JS */
.btn-eye {
    position: absolute; right: 15px; top: 50%; transform: translateY(-50%);
    background: none; border: none; color: #94a3b8; cursor: pointer; z-index: 20;
    display: flex; align-items: center; justify-content: center;
}

.input-error { border-color: var(--error) !important; background: #fef2f2 !important; }
.input-success { border-color: var(--success) !important; }

.shake { animation: shake 0.4s ease-in-out; }

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-8px); }
    75% { transform: translateX(8px); }
}

.btn-login {
    width: 100%; background: var(--primary); color: white; border: none;
    padding: 16px; border-radius: 1.2rem; font-weight: 800;
    text-transform: uppercase; letter-spacing: 1px; margin-top: 2rem;
    cursor: pointer; transition: 0.3s; display: flex; align-items: center; justify-content: center; gap: 10px;
}

.loader {
    width: 18px; height: 18px; border: 3px solid #fff; border-top-color: transparent;
    border-radius: 50%; animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.btn-join {
    display: block; margin-top: 1.5rem; padding: 15px;
    background: linear-gradient(135deg, #10b981, #065f46);
    color: white; text-decoration: none; border-radius: 1.2rem;
    font-weight: 700; font-size: 15px; text-align: center;
    animation: pulse 4s infinite ease-in-out;
}

/* Animation pulsante avec effet d'ombre lumineuse */
@keyframes pulse { 
    0%, 100% { 
        transform: scale(1); 
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); 
    } 
    50% { 
        transform: scale(1.03); 
        box-shadow: 0 0 20px 5px rgba(16, 185, 129, 0.2); 
    } 
}

.alert { background: #fef2f2; color: #b91c1c; padding: 12px; border-radius: 12px; font-size: 12px; font-weight: 700; margin-bottom: 20px; border: 1px solid #fee2e2; }

.forgot-link {
    display: block; margin-top: 15px; font-size: 11px; color: var(--text-slate);
    text-decoration: none; font-weight: 700; text-transform: uppercase;
}

input[type="text"], input[type="email"] {
    text-transform: uppercase;
}
input::placeholder {
    text-transform: none; /* Garde les placeholders lisibles */
}

.btn-login:active { transform: scale(0.96); }

/* Empêche le forçage des majuscules sur le mot de passe */
#password {
    text-transform: none !important;
}

@media screen and (max-width: 480px) {
    .login-card {
        padding: 1.5rem;
        border-radius: 1.5rem;
    }
    input {
        font-size: 16px; /* Évite le zoom automatique sur iOS au focus */
    }
}

.btn-login:hover {
    background: #1e40af; /* Un bleu légèrement plus clair */
    box-shadow: 0 10px 15px -3px rgba(30, 58, 138, 0.3);
}