:root {
    --black:       #000000;
    --gold:        #F0CD77;
    --gold-soft:   #f7dc9a;   /* variante claire */
    --gold-deep:   #c9a94f;   /* variante sombre */
    --grey:        #54595F;
    --grey-light:  #8a8f95;   /* variante claire */
    --panel:       #141518;
    --panel-2:     #0c0d0f;
    --text:        #f5f1e6;
    --text-muted:  #9a9da3;
}

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

html, body { height: 100%; }

body {
    font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background:
        radial-gradient(circle at 18% 18%, rgba(240, 205, 119, 0.14), transparent 42%),
        radial-gradient(circle at 82% 82%, rgba(84, 89, 95, 0.22), transparent 45%),
        var(--black);
    color: var(--text);
    min-height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.card {
    width: 100%;
    max-width: 580px;
    background: linear-gradient(160deg, var(--panel), var(--panel-2));
    border: 1px solid rgba(240, 205, 119, 0.40);
    border-radius: 20px;
    padding: 52px 44px;
    text-align: center;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.55);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent 30%, rgba(240, 205, 119, 0.08) 50%, transparent 70%);
    pointer-events: none;
}

.logo {
    width: 160px;
    height: auto;
    margin: 0 auto 26px;
    display: block;
    filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.5));
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.76rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--gold);
    background: rgba(240, 205, 119, 0.10);
    border: 1px solid rgba(240, 205, 119, 0.40);
    padding: 6px 14px;
    border-radius: 999px;
    margin-bottom: 22px;
}

.brand {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--text);
    margin-bottom: 10px;
}

.brand .accent { color: var(--gold); }

.tagline {
    font-size: 0.98rem;
    font-style: italic;
    color: var(--grey-light);
    line-height: 1.5;
    margin-bottom: 28px;
}

h1 {
    font-size: 2rem;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--text);
}

h1 .accent { color: var(--gold); }

p.lead {
    font-size: 1.02rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 32px;
}

.loader {
    width: 46px;
    height: 46px;
    margin: 0 auto 30px;
    border: 4px solid rgba(240, 205, 119, 0.18);
    border-top-color: var(--gold);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.contact {
    font-size: 0.92rem;
    color: var(--text-muted);
}

.contact a {
    color: var(--gold);
    text-decoration: none;
    border-bottom: 1px solid rgba(240, 205, 119, 0.5);
}

.contact a:hover { color: var(--gold-soft); }

.footer {
    margin-top: 26px;
    font-size: 0.74rem;
    color: rgba(154, 157, 163, 0.55);
    letter-spacing: 0.04em;
}

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

@media (max-width: 480px) {
    .card { padding: 38px 24px; }
    h1 { font-size: 1.6rem; }
    .brand { font-size: 1.3rem; }
    .logo { width: 128px; }
}