:root {
    --primary:        #AB1D26;
    --primary-dark:   #8a1720;
    --secondary:      #F25E8B;
    --gradient:       linear-gradient(135deg, #AB1D26 0%, #F25E8B 100%);
}

* { box-sizing: border-box; }

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--gradient);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 1rem;
}

/* motif de fond */
body::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 80 80"><circle cx="40" cy="40" r="1.5" fill="rgba(255,255,255,0.08)"/></svg>');
    animation: bgFloat 25s ease-in-out infinite;
}

@keyframes bgFloat {
    0%,100% { transform: translateY(0); }
    50%      { transform: translateY(-15px); }
}

/* ---- cercles décoratifs ---- */
.login-decoration {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,.12);
    animation: deco 5s ease-in-out infinite;
}
.decoration-1 { width:200px; height:200px; top:-80px;  right:-60px; animation-delay:0s; }
.decoration-2 { width:150px; height:150px; bottom:-60px; left:-50px; animation-delay:2.5s; }

@keyframes deco {
    0%,100% { transform: scale(1);    opacity:.12; }
    50%      { transform: scale(1.1); opacity:.2; }
}

/* ---- carte principale ---- */
.login-container {
    background: rgba(255,255,255,.97);
    backdrop-filter: blur(24px);
    border-radius: 24px;
    box-shadow: 0 30px 60px rgba(0,0,0,.18), 0 0 0 1px rgba(255,255,255,.3);
    padding: 2.75rem 2.5rem 2.25rem;
    width: 100%;
    max-width: 440px;
    position: relative;
    z-index: 1;
    animation: slideUp .7s cubic-bezier(.16,1,.3,1) both;
}

@keyframes slideUp {
    from { opacity:0; transform:translateY(28px); }
    to   { opacity:1; transform:translateY(0); }
}

/* ---- logo / marque ---- */
.brand-logo {
    text-align: center;
    margin-bottom: 2rem;
}
.brand-logo img {
    max-height: 72px;
    width: auto;
    margin-bottom: .75rem;
}
.brand-subtitle {
    color: #888;
    font-size: .85rem;
    font-weight: 500;
    letter-spacing: .4px;
    margin: 0;
}

/* ---- séparateur titre ---- */
.login-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1a1a1a;
    text-align: center;
    margin-bottom: 1.75rem;
    position: relative;
}
.login-title::after {
    content: '';
    display: block;
    width: 40px;
    height: 3px;
    background: var(--gradient);
    border-radius: 2px;
    margin: .5rem auto 0;
}

/* ---- alerte erreur ---- */
.alert-login {
    background: #fdecea;
    border: 1px solid #f5c6cb;
    border-left: 4px solid var(--primary);
    border-radius: 10px;
    color: #721c24;
    padding: .75rem 1rem;
    font-size: .88rem;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: .5rem;
}

/* ---- groupes de champs ---- */
.field-group {
    margin-bottom: 1.25rem;
}
.field-group label {
    display: block;
    font-size: .78rem;
    font-weight: 600;
    color: #444;
    text-transform: uppercase;
    letter-spacing: .5px;
    margin-bottom: .45rem;
}
.input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}
.input-icon {
    position: absolute;
    left: 14px;
    color: #bbb;
    font-size: .95rem;
    pointer-events: none;
    transition: color .25s;
}
.input-wrap:focus-within .input-icon { color: var(--primary); }

.login-container .field-group input[type="email"],
.login-container .field-group input[type="password"],
.login-container .field-group input[type="text"] {
    width: 100%;
    padding: .75rem 2.75rem .75rem 2.75rem;
    border: 2px solid #e9ecef !important;
    border-radius: 12px !important;
    font-size: .95rem;
    background: #fafafa !important;
    transition: border-color .25s, box-shadow .25s, background .25s;
    outline: none;
    color: #1a1a1a;
    box-shadow: none !important;
}
.login-container .field-group input[type="email"]:focus,
.login-container .field-group input[type="password"]:focus,
.login-container .field-group input[type="text"]:focus {
    border-color: var(--primary) !important;
    background: #fff !important;
    box-shadow: 0 0 0 4px rgba(171,29,38,.1) !important;
}
.login-container .field-group input.is-valid   { border-color: #1a9e5a !important; }
.login-container .field-group input.is-invalid { border-color: var(--primary) !important; }

/* toggle mot de passe */
.toggle-password {
    position: absolute;
    right: 13px;
    background: none;
    border: none;
    cursor: pointer;
    color: #bbb;
    font-size: .9rem;
    padding: 0;
    transition: color .2s;
}
.toggle-password:hover { color: var(--primary); }

/* ---- bouton connexion ---- */
.btn-login {
    width: 100%;
    padding: .85rem;
    background: var(--gradient);
    border: none;
    border-radius: 12px;
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: .5px;
    cursor: pointer;
    transition: transform .2s, box-shadow .2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .6rem;
    margin-top: .25rem;
}
.btn-login:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(171,29,38,.35);
}
.btn-login:active:not(:disabled) { transform: translateY(0); }
.btn-login:disabled {
    opacity: .75;
    cursor: not-allowed;
}

/* spinner dans le bouton */
.btn-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,.4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- footer carte ---- */
.login-footer {
    text-align: center;
    margin-top: 1.5rem;
    font-size: .82rem;
    color: #999;
}
.login-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: color .2s;
}
.login-footer a:hover { color: var(--primary-dark); text-decoration: underline; }

@media (max-width: 480px) {
    .login-container { padding: 2rem 1.5rem 1.75rem; }
}