.err-wrap {
    max-width: 1300px;
    padding: 80px 14px 100px;
    margin: 0 auto;
    min-height: calc(100vh - 210px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* ── Fundo: estrelas ── */
.err-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

.err-bg::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at  3%  8%, rgba(255,255,255,0.40) 0, rgba(255,255,255,0.40) 1px, transparent 1.5px),
        radial-gradient(circle at 12% 22%, rgba(255,255,255,0.30) 0, rgba(255,255,255,0.30) 1px, transparent 1.5px),
        radial-gradient(circle at 21%  5%, rgba(255,255,255,0.45) 0, rgba(255,255,255,0.45) 1px, transparent 1.5px),
        radial-gradient(circle at 29% 40%, rgba(255,255,255,0.28) 0, rgba(255,255,255,0.28) 1px, transparent 1.5px),
        radial-gradient(circle at 36% 18%, rgba(255,255,255,0.38) 0, rgba(255,255,255,0.38) 1px, transparent 1.5px),
        radial-gradient(circle at 44% 55%, rgba(255,255,255,0.30) 0, rgba(255,255,255,0.30) 1px, transparent 1.5px),
        radial-gradient(circle at 50%  3%, rgba(255,255,255,0.42) 0, rgba(255,255,255,0.42) 1px, transparent 1.5px),
        radial-gradient(circle at 57% 32%, rgba(255,255,255,0.25) 0, rgba(255,255,255,0.25) 1px, transparent 1.5px),
        radial-gradient(circle at 63% 70%, rgba(255,255,255,0.35) 0, rgba(255,255,255,0.35) 1px, transparent 1.5px),
        radial-gradient(circle at 70% 12%, rgba(255,255,255,0.40) 0, rgba(255,255,255,0.40) 1px, transparent 1.5px),
        radial-gradient(circle at 76% 48%, rgba(255,255,255,0.28) 0, rgba(255,255,255,0.28) 1px, transparent 1.5px),
        radial-gradient(circle at 82%  6%, rgba(255,255,255,0.45) 0, rgba(255,255,255,0.45) 1px, transparent 1.5px),
        radial-gradient(circle at 88% 62%, rgba(255,255,255,0.30) 0, rgba(255,255,255,0.30) 1px, transparent 1.5px),
        radial-gradient(circle at 94% 25%, rgba(255,255,255,0.38) 0, rgba(255,255,255,0.38) 1px, transparent 1.5px),
        radial-gradient(circle at  6% 55%, rgba(255,255,255,0.28) 0, rgba(255,255,255,0.28) 1px, transparent 1.5px),
        radial-gradient(circle at 16% 75%, rgba(255,255,255,0.35) 0, rgba(255,255,255,0.35) 1px, transparent 1.5px),
        radial-gradient(circle at 33% 88%, rgba(255,255,255,0.25) 0, rgba(255,255,255,0.25) 1px, transparent 1.5px),
        radial-gradient(circle at 48% 78%, rgba(255,255,255,0.32) 0, rgba(255,255,255,0.32) 1px, transparent 1.5px),
        radial-gradient(circle at 59% 92%, rgba(255,255,255,0.28) 0, rgba(255,255,255,0.28) 1px, transparent 1.5px),
        radial-gradient(circle at 73% 82%, rgba(255,255,255,0.38) 0, rgba(255,255,255,0.38) 1px, transparent 1.5px),
        radial-gradient(circle at 86% 90%, rgba(255,255,255,0.30) 0, rgba(255,255,255,0.30) 1px, transparent 1.5px),
        radial-gradient(circle at 97% 68%, rgba(255,255,255,0.35) 0, rgba(255,255,255,0.35) 1px, transparent 1.5px),
        radial-gradient(circle at  2% 85%, rgba(255,255,255,0.28) 0, rgba(255,255,255,0.28) 1px, transparent 1.5px),
        radial-gradient(circle at 40% 95%, rgba(255,255,255,0.32) 0, rgba(255,255,255,0.32) 1px, transparent 1.5px),
        radial-gradient(circle at 91%  4%, rgba(255,255,255,0.40) 0, rgba(255,255,255,0.40) 1px, transparent 1.5px);
    animation: twinkle-a 8s ease-in-out infinite alternate;
}

.err-bg::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at  8% 28%, rgba(255,255,255,0.75) 0, rgba(255,255,255,0.75) 1.5px, transparent 2px),
        radial-gradient(circle at 23% 60%, rgba(255,255,255,0.65) 0, rgba(255,255,255,0.65) 1.5px, transparent 2px),
        radial-gradient(circle at 39% 15%, rgba(255,255,255,0.70) 0, rgba(255,255,255,0.70) 1.5px, transparent 2px),
        radial-gradient(circle at 54% 45%, rgba(255,255,255,0.60) 0, rgba(255,255,255,0.60) 1.5px, transparent 2px),
        radial-gradient(circle at 67% 72%, rgba(255,255,255,0.75) 0, rgba(255,255,255,0.75) 1.5px, transparent 2px),
        radial-gradient(circle at 79% 35%, rgba(255,255,255,0.65) 0, rgba(255,255,255,0.65) 1.5px, transparent 2px),
        radial-gradient(circle at 92% 55%, rgba(255,255,255,0.70) 0, rgba(255,255,255,0.70) 1.5px, transparent 2px),
        radial-gradient(circle at 15% 42%, rgba(255,255,255,0.60) 0, rgba(255,255,255,0.60) 1.5px, transparent 2px),
        radial-gradient(circle at 46% 82%, rgba(255,255,255,0.70) 0, rgba(255,255,255,0.70) 1.5px, transparent 2px),
        radial-gradient(circle at 85% 18%, rgba(255,255,255,0.75) 0, rgba(255,255,255,0.75) 1.5px, transparent 2px),
        radial-gradient(circle at 30% 35%, rgba(255,255,255,0.90) 0, rgba(255,255,255,0.90) 2px, transparent 3px),
        radial-gradient(circle at 60% 22%, rgba(255,255,255,0.85) 0, rgba(255,255,255,0.85) 2px, transparent 3px),
        radial-gradient(circle at 78% 68%, rgba(255,255,255,0.90) 0, rgba(255,255,255,0.90) 2px, transparent 3px);
    animation: twinkle-b 11s ease-in-out infinite alternate;
}

@keyframes twinkle-a {
    0%   { opacity: 0.7; }
    50%  { opacity: 1;   }
    100% { opacity: 0.6; }
}

@keyframes twinkle-b {
    0%   { opacity: 0.9; }
    60%  { opacity: 0.5; }
    100% { opacity: 1;   }
}

/* ── Astronauta ── */
.err-astro {
    position: absolute;
    bottom: -30px;
    right: 4%;
    width: 210px;
    opacity: 0.35;
    animation: float 7s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0)    rotate(-4deg); }
    50%       { transform: translateY(-22px) rotate(-4deg); }
}

/* ── Conteúdo ── */
.err-content {
    position: relative;
    z-index: 1;
}

.err-code {
    display: block;
    font-size: 6rem;
    font-weight: 800;
    font-family: "Montserrat", sans-serif;
    color: rgba(255, 255, 255, 0.12);
    line-height: 1;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
}

.err-title {
    font-size: 1.75rem;
    font-weight: 700;
    font-family: "Montserrat", sans-serif;
    color: #fff;
    margin: 0 0 12px;
    line-height: 1.2;
}

.err-msg {
    font-size: 0.9rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.45);
    margin: 0 0 36px;
    max-width: 460px;
    font-weight: 400;
}

.err-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
}

.err-sep {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.2);
    margin: 6px 0 2px;
}

.err-links a {
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: 5px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.5);
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.err-links a:hover {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.2);
    color: #fff;
}

.err-links i {
    font-size: 0.95rem;
    line-height: 1;
}

@media (max-width: 600px) {
    .err-wrap {
        padding: 60px 14px 80px;
    }

    .err-code {
        font-size: 4rem;
    }

    .err-title {
        font-size: 1.35rem;
    }

    .err-astro {
        width: 140px;
        right: -10px;
        bottom: -10px;
        opacity: 0.2;
    }
}