.mcm-pdf-viewer {
    box-sizing: border-box;
    width: 100%;
    max-width: 100%;
    margin: 0 auto 32px;
    border-radius: 20px;
    overflow: hidden;
    background: #1f1f22;
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.28);
    color: #fff;
}

.mcm-pdf-viewer *,
.mcm-pdf-viewer *::before,
.mcm-pdf-viewer *::after {
    box-sizing: border-box;
}

.mcm-pdf-viewer__toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 18px 20px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0));
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mcm-pdf-viewer__meta {
    min-width: 0;
}

.mcm-pdf-viewer__eyebrow {
    margin: 0 0 4px;
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.64);
}

.mcm-pdf-viewer__title {
    margin: 0;
    font-size: 18px;
    line-height: 1.3;
    color: #fff;
    word-break: break-word;
}

.mcm-pdf-viewer__actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.mcm-pdf-viewer__action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 0 14px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.mcm-pdf-viewer__action:hover,
.mcm-pdf-viewer__action:focus {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.3);
    color: #fff;
    transform: translateY(-1px);
}

.mcm-pdf-viewer__stage {
    padding: 24px;
    background:
        radial-gradient(circle at top center, rgba(255, 255, 255, 0.08), transparent 36%),
        linear-gradient(180deg, #2d2d30 0%, #232326 100%);
}

.mcm-pdf-viewer__sheet {
    position: relative;
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
    background: #0f172a;
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.34);
}

.mcm-pdf-viewer__iframe {
    display: block;
    width: 100%;
    height: var(--mcm-pdf-viewer-height, clamp(720px, 82vh, 1120px));
    border: 0;
    background: #2f2f33;
}

.mcm-pdf-viewer__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 16px 20px 20px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.68);
    background: #1f1f22;
}

.mcm-pdf-viewer__footer a {
    color: #fff;
    text-decoration: underline;
}

.mcm-pdf-viewer.is-fullscreen {
    width: 100vw;
    max-width: none;
    height: 100vh;
    margin: 0;
    border-radius: 0;
}

.mcm-pdf-viewer.is-fullscreen .mcm-pdf-viewer__stage {
    min-height: calc(100vh - 132px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.mcm-pdf-viewer.is-fullscreen .mcm-pdf-viewer__sheet {
    width: min(100%, 1300px);
}

.mcm-pdf-viewer.is-fullscreen .mcm-pdf-viewer__iframe {
    height: calc(100vh - 180px);
}

@media (max-width: 900px) {
    .mcm-pdf-viewer {
        margin: 0 auto 24px;
        border-radius: 16px;
    }

    .mcm-pdf-viewer__toolbar,
    .mcm-pdf-viewer__footer {
        flex-direction: column;
        align-items: flex-start;
    }

    .mcm-pdf-viewer__actions {
        width: 100%;
        justify-content: flex-start;
    }

    .mcm-pdf-viewer__stage {
        padding: 16px;
    }

    .mcm-pdf-viewer__iframe {
        height: var(--mcm-pdf-viewer-height-mobile, min(74vh, 840px));
    }
}