.extension-security-overlay {
    --security-accent: #6b8cff;
    --security-accent-soft: rgba(107, 140, 255, 0.16);
    --security-glow: rgba(68, 105, 255, 0.42);

    position: fixed;
    inset: 0;
    z-index: 99999;
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background:
        radial-gradient(circle at 15% 18%, rgba(50, 100, 255, 0.24), transparent 30%),
        radial-gradient(circle at 88% 85%, rgba(128, 71, 255, 0.19), transparent 28%),
        rgba(5, 10, 22, 0.83);
    backdrop-filter: blur(18px) saturate(125%);
    -webkit-backdrop-filter: blur(18px) saturate(125%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.24s ease, visibility 0.24s ease;
}

.extension-security-overlay.is-visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.extension-security-overlay.is-active {
    --security-accent: #37d990;
    --security-accent-soft: rgba(55, 217, 144, 0.15);
    --security-glow: rgba(55, 217, 144, 0.38);
}

.extension-security-overlay.is-blocked {
    --security-accent: #ff647f;
    --security-accent-soft: rgba(255, 100, 127, 0.15);
    --security-glow: rgba(255, 75, 105, 0.38);
}

.extension-security-overlay__ambient {
    position: absolute;
    width: min(76vw, 850px);
    aspect-ratio: 1;
    border: 1px solid rgba(255, 255, 255, 0.055);
    border-radius: 50%;
    box-shadow: 0 0 0 80px rgba(255,255,255,.012), 0 0 0 160px rgba(255,255,255,.008);
    animation: extensionSecurityAmbient 8s ease-in-out infinite;
}

.extension-security-overlay__card {
    position: relative;
    z-index: 2;
    width: min(100%, 560px);
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.13);
    border-radius: 32px;
    overflow: hidden;
    color: #fff;
    text-align: center;
    background:
        linear-gradient(145deg, rgba(24, 34, 58, 0.96), rgba(8, 14, 29, 0.97));
    box-shadow: 0 42px 110px rgba(0, 0, 0, 0.48), 0 0 65px var(--security-glow);
    transform: translateY(12px) scale(.98);
    transition: transform .28s cubic-bezier(.22,1,.36,1), box-shadow .28s ease;
}

.extension-security-overlay.is-visible .extension-security-overlay__card {
    transform: translateY(0) scale(1);
}

.extension-security-overlay__card::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(115deg, rgba(255,255,255,.07), transparent 30%, transparent 70%, rgba(255,255,255,.035));
}

.extension-security-overlay__brand {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding-bottom: 19px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}

.extension-security-overlay__brand img {
    width: auto;
    max-width: 170px;
    max-height: 43px;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.extension-security-overlay__brand span {
    padding: 7px 10px;
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 999px;
    color: rgba(255,255,255,.58);
    background: rgba(255,255,255,.035);
    font-size: 9px;
    font-weight: 900;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.extension-security-overlay__visual {
    position: relative;
    width: 126px;
    height: 126px;
    margin: 25px auto 17px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.extension-security-overlay__ring {
    position: absolute;
    inset: 0;
    border: 1px solid var(--security-accent);
    border-radius: 50%;
    opacity: .22;
}

.extension-security-overlay__ring--one { animation: extensionSecurityRing 2.2s ease-out infinite; }
.extension-security-overlay__ring--two { inset: 14px; animation: extensionSecurityRing 2.2s .65s ease-out infinite; }

.extension-security-overlay__icon {
    position: relative;
    z-index: 2;
    width: 76px;
    height: 76px;
    border: 1px solid color-mix(in srgb, var(--security-accent) 40%, transparent);
    border-radius: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--security-accent);
    background: var(--security-accent-soft);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 18px 42px var(--security-glow);
}

.extension-security-icon {
    display: none;
    width: 35px;
    height: 35px;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.is-connecting .extension-security-icon--connecting,
.is-active .extension-security-icon--active,
.is-blocked .extension-security-icon--blocked { display: block; }

.is-connecting .extension-security-overlay__icon { animation: extensionSecurityPulse 1.25s ease-in-out infinite; }

.extension-security-overlay__eyebrow {
    position: relative;
    z-index: 2;
    color: var(--security-accent);
    font-size: 10px;
    font-weight: 900;
    letter-spacing: .14em;
    text-transform: uppercase;
}

.extension-security-overlay h2 {
    position: relative;
    z-index: 2;
    margin: 8px 0 10px;
    color: #fff;
    font-size: clamp(25px, 4vw, 32px);
    line-height: 1.08;
    letter-spacing: -.045em;
}

.extension-security-overlay p {
    position: relative;
    z-index: 2;
    max-width: 440px;
    margin: 0 auto;
    color: rgba(255,255,255,.66);
    font-size: 13px;
    line-height: 1.7;
}

.extension-security-overlay__details {
    position: relative;
    z-index: 2;
    margin-top: 22px;
    padding: 12px;
    border: 1px solid rgba(255,255,255,.08);
    border-radius: 18px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    background: rgba(255,255,255,.027);
}

.extension-security-overlay__details div {
    min-width: 0;
    padding: 8px 10px;
    border-radius: 13px;
    display: grid;
    gap: 4px;
    background: rgba(255,255,255,.025);
}

.extension-security-overlay__details span {
    color: rgba(255,255,255,.42);
    font-size: 9px;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.extension-security-overlay__details strong {
    overflow: hidden;
    color: #fff;
    font-size: 11px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.extension-security-overlay__progress {
    position: relative;
    z-index: 2;
    height: 3px;
    margin: 18px 4px 0;
    overflow: hidden;
    border-radius: 99px;
    background: rgba(255,255,255,.07);
}

.extension-security-overlay__progress span {
    width: 100%;
    height: 100%;
    display: block;
    border-radius: inherit;
    background: linear-gradient(90deg, transparent, var(--security-accent), transparent);
    animation: extensionSecurityProgress 1.35s linear infinite;
}

.is-active .extension-security-overlay__progress span,
.is-blocked .extension-security-overlay__progress span {
    animation: none;
    background: var(--security-accent);
}

.extension-security-overlay__actions {
    position: relative;
    z-index: 2;
    margin-top: 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.extension-security-overlay[data-mode="login"] .extension-security-overlay__actions {
    grid-template-columns: 1fr;
}

.extension-security-overlay__actions button,
.extension-security-overlay__actions a {
    min-height: 50px;
    padding: 0 16px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    font: inherit;
    font-size: 12px;
    font-weight: 850;
    text-decoration: none;
    cursor: pointer;
    transition: transform .2s ease, border-color .2s ease, background-color .2s ease;
}

.extension-security-overlay__actions button {
    border: 0;
    color: #fff;
    background: linear-gradient(135deg, var(--security-accent), color-mix(in srgb, var(--security-accent) 67%, #15214a));
    box-shadow: 0 14px 30px var(--security-glow);
}

.extension-security-overlay__actions button svg {
    width: 17px;
    height: 17px;
    stroke: currentColor;
    stroke-width: 1.9;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.extension-security-overlay__actions a {
    border: 1px solid rgba(255,255,255,.11);
    color: #fff;
    background: rgba(255,255,255,.04);
}

.extension-security-overlay__actions button:hover,
.extension-security-overlay__actions a:hover { transform: translateY(-2px); }

.is-connecting .extension-security-overlay__actions,
.is-active .extension-security-overlay__actions { display: none; }

.extension-security-overlay__footer {
    position: relative;
    z-index: 2;
    margin-top: 17px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: rgba(255,255,255,.4);
    font-size: 9px;
    font-weight: 800;
    letter-spacing: .07em;
    text-transform: uppercase;
}

.extension-security-overlay__footer span {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--security-accent);
    box-shadow: 0 0 0 4px var(--security-accent-soft), 0 0 13px var(--security-glow);
}

body.extension-security-blocked { overflow: hidden; }

@keyframes extensionSecurityRing {
    0% { transform: scale(.72); opacity: .35; }
    100% { transform: scale(1.12); opacity: 0; }
}
@keyframes extensionSecurityPulse {
    50% { transform: scale(.94); box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 10px 25px var(--security-glow); }
}
@keyframes extensionSecurityProgress {
    from { transform: translateX(-100%); }
    to { transform: translateX(100%); }
}
@keyframes extensionSecurityAmbient {
    50% { transform: scale(1.04) rotate(3deg); opacity: .65; }
}

@media (max-width: 560px) {
    .extension-security-overlay { padding: 13px; }
    .extension-security-overlay__card { padding: 22px 17px; border-radius: 25px; }
    .extension-security-overlay__brand img { max-width: 135px; max-height: 36px; }
    .extension-security-overlay__brand span { font-size: 8px; }
    .extension-security-overlay__visual { width: 108px; height: 108px; margin-top: 20px; }
    .extension-security-overlay__icon { width: 67px; height: 67px; border-radius: 22px; }
    .extension-security-overlay__details { grid-template-columns: 1fr; }
    .extension-security-overlay__actions { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    .extension-security-overlay *,
    .extension-security-overlay *::before,
    .extension-security-overlay *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }
}

/* Hardening: selettori completamente isolati per evitare collisioni con le pagine del pannello. */
.extension-security-overlay:not(.is-visible) { display: none !important; }
.extension-security-overlay.is-visible { display: flex !important; }
.extension-security-overlay .extension-security-icon {
    width: 35px !important; height: 35px !important;
    min-width: 35px; min-height: 35px; max-width: 35px !important; max-height: 35px !important;
    overflow: visible;
}
.extension-security-overlay.is-connecting .extension-security-icon--connecting,
.extension-security-overlay.is-active .extension-security-icon--active,
.extension-security-overlay.is-blocked .extension-security-icon--blocked { display: block; }
.extension-security-overlay.is-connecting .extension-security-icon--active,
.extension-security-overlay.is-connecting .extension-security-icon--blocked,
.extension-security-overlay.is-active .extension-security-icon--connecting,
.extension-security-overlay.is-active .extension-security-icon--blocked,
.extension-security-overlay.is-blocked .extension-security-icon--connecting,
.extension-security-overlay.is-blocked .extension-security-icon--active { display: none !important; }