/* Shared Google-Drive-style PDF viewer overlay styles */

.pdf-viewer-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}
.pdf-viewer-overlay.open {
    display: flex;
}

.pdf-viewer-backdrop {
    position: absolute;
    inset: 0;
    background-color: rgba(17, 18, 18, 0.6);
    opacity: 0;
    transition: opacity 0.25s ease;
}
.pdf-viewer-overlay.open .pdf-viewer-backdrop {
    opacity: 1;
}

.pdf-viewer-sheet {
    position: relative;
    width: 96vw;
    height: 94vh;
    background-color: var(--bg);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
    display: flex;
    flex-direction: column;
    transform: scale(0.96);
    opacity: 0;
    transition: transform 0.25s ease, opacity 0.25s ease;
}
.pdf-viewer-overlay.open .pdf-viewer-sheet {
    transform: scale(1);
    opacity: 1;
}

.pdf-viewer-header {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 14px 20px;
    background-color: var(--primary-light);
}

.pdf-viewer-title {
    font-family: var(--font-text-secondary);
    font-size: 18px;
    font-weight: bold;
    color: var(--text-dark);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

.pdf-viewer-counter {
    font-family: var(--font-text-secondary);
    font-size: 14px;
    color: var(--grey-blue);
    white-space: nowrap;
}

.pdf-viewer-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.pdf-viewer-action-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: #fde2d8;
    color: var(--accent-light);
    font-size: 15px;
    border: none;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
}
.pdf-viewer-action-btn:hover {
    transform: scale(1.1);
    background: var(--accent);
    color: white;
}

.pdf-viewer-body {
    flex: 1;
    position: relative;
}
.pdf-viewer-body iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.pdf-viewer-nav {
    position: relative;
    width: 56px;
    height: 56px;
    margin: 0 24px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: #fde2d8;
    color: var(--accent-light);
    font-size: 20px;
    border: none;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, background 0.2s, opacity 0.2s;
}
.pdf-viewer-nav:hover {
    transform: scale(1.1);
    background: var(--accent);
    color: white;
}
.pdf-viewer-nav:disabled {
    opacity: 0;
    pointer-events: none;
}

/* mobile: full-screen sheet */
@media (max-width: 1000px) {
    .pdf-viewer-sheet {
        width: 100vw;
        height: 100dvh;
        border-radius: 0;
    }
    .pdf-viewer-nav {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        margin: 0;
        z-index: 2001;
        width: 44px;
        height: 44px;
        font-size: 16px;
    }
    .pdf-viewer-prev {
        left: 10px;
    }
    .pdf-viewer-next {
        right: 10px;
    }
    .pdf-viewer-nav:hover {
        transform: translateY(-50%) scale(1.1);
    }
    .pdf-viewer-title {
        font-size: 14px;
    }
    .pdf-viewer-counter {
        display: none;
    }
}