/**
 * Staging-only ribbon — pointer-events: none so the cursor and clicks pass
 * through to the page beneath (ribbon feels like a floating 3D overlay).
 */
:root {
    --vss-staging-ribbon-h: 44px;
}

.vss-staging-ribbon {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 2147483646;
    height: var(--vss-staging-ribbon-h);
    pointer-events: none;
    perspective: 900px;
    isolation: isolate;
}

.vss-staging-ribbon__layer {
    position: absolute;
    inset: 0;
    transform: rotateX(10deg);
    transform-origin: top center;
    filter: drop-shadow(0 10px 18px rgba(15, 23, 42, 0.45));
}

.vss-staging-ribbon__bar {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 0 72px;
    overflow: hidden;
    color: #451a03;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.28em;
    line-height: 1;
    text-transform: uppercase;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.42) 0%, rgba(255, 255, 255, 0) 38%),
        linear-gradient(180deg, #fcd34d 0%, #f59e0b 52%, #d97706 100%);
    border-bottom: 2px solid #b45309;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.55),
        inset 0 -4px 10px rgba(120, 53, 15, 0.35);
}

.vss-staging-ribbon__bar::before,
.vss-staging-ribbon__bar::after {
    content: "";
    position: absolute;
    top: 0;
    bottom: -1px;
    width: 28px;
    background: linear-gradient(180deg, #fde68a 0%, #c2410c 100%);
    box-shadow: inset -2px 0 6px rgba(0, 0, 0, 0.18);
}

.vss-staging-ribbon__bar::before {
    left: 0;
    clip-path: polygon(0 0, 100% 0, 0 100%);
}

.vss-staging-ribbon__bar::after {
    right: 0;
    clip-path: polygon(0 0, 100% 0, 100% 100%);
    box-shadow: inset 2px 0 6px rgba(0, 0, 0, 0.18);
}

.vss-staging-ribbon__shine {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        105deg,
        transparent 38%,
        rgba(255, 255, 255, 0.28) 48%,
        transparent 58%
    );
    opacity: 0.85;
    animation: vss-staging-ribbon-shine 6s ease-in-out infinite;
}

.vss-staging-ribbon__text {
    position: relative;
    z-index: 1;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.35);
}

.vss-staging-ribbon__shadow {
    position: absolute;
    left: 8%;
    right: 8%;
    bottom: -14px;
    height: 14px;
    background: radial-gradient(ellipse at center, rgba(15, 23, 42, 0.38) 0%, transparent 72%);
    pointer-events: none;
}

@keyframes vss-staging-ribbon-shine {
    0%, 100% { transform: translateX(-120%); }
    45%, 55% { transform: translateX(120%); }
}

body:has(.vss-staging-ribbon) {
    padding-top: var(--vss-staging-ribbon-h) !important;
}

body:has(.vss-staging-ribbon) #main-nav-for-chat {
    top: var(--vss-staging-ribbon-h);
}

body:has(.vss-staging-ribbon) .sidebar {
    top: var(--vss-staging-ribbon-h);
    height: calc(100vh - var(--vss-staging-ribbon-h));
}

@media (max-width: 767.98px) {
    .vss-staging-ribbon__bar {
        font-size: 11px;
        letter-spacing: 0.18em;
        padding: 0 40px;
    }
}

@media print {
    .vss-staging-ribbon {
        display: none !important;
    }

    body:has(.vss-staging-ribbon) {
        padding-top: 0 !important;
    }
}