/* Doc Viewer Pro - CSS */
/* ===================== */

.doc-viewer-wrap {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0,0,0,0.12);
    background: #f5f5f5;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    position: relative;
}

/* ---- TOOLBAR ---- */
.dv-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background: #1a1a2e;
    color: #fff;
    min-height: 48px;
    flex-wrap: wrap;
    gap: 8px;
}

.dv-title {
    font-size: 14px;
    font-weight: 600;
    color: #e0e0e0;
    flex: 1;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.dv-controls {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.dv-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.12);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s ease, transform 0.1s ease;
    min-width: 32px;
    min-height: 32px;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

.dv-btn:hover,
.dv-btn:focus-visible {
    background: rgba(255,255,255,0.22);
    outline: none;
}

.dv-btn:active {
    transform: scale(0.94);
    background: rgba(255,255,255,0.28);
}

.dv-zoom-level {
    font-size: 12px;
    color: #ccc;
    min-width: 38px;
    text-align: center;
}

/* ---- LOADING ---- */
.dv-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    color: #666;
    gap: 16px;
}

.dv-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #e0e0e0;
    border-top-color: #4f46e5;
    border-radius: 50%;
    animation: dv-spin 0.7s linear infinite;
}

@keyframes dv-spin {
    to { transform: rotate(360deg); }
}

.dv-error {
    padding: 40px 20px;
    text-align: center;
    color: #c0392b;
    font-size: 15px;
}

.dv-error a {
    color: #4f46e5;
    text-decoration: underline;
}

/* ---- PDF CONTAINER ---- */
.dv-pdf-container {
    overflow-y: auto;
    overflow-x: auto;
    background: #e8e8e8;
    /* Smooth momentum scroll on iOS */
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    overscroll-behavior: contain;
    /* Scrollbar styling */
    scrollbar-width: thin;
    scrollbar-color: #9ca3af #e8e8e8;
}

.dv-pdf-container::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.dv-pdf-container::-webkit-scrollbar-track {
    background: #e8e8e8;
}

.dv-pdf-container::-webkit-scrollbar-thumb {
    background: #9ca3af;
    border-radius: 3px;
}

.dv-pdf-container::-webkit-scrollbar-thumb:hover {
    background: #6b7280;
}

/* PDF Pages wrapper */
.dv-pdf-pages {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 12px;
    gap: 16px;
}

/* Each PDF page canvas */
.dv-pdf-pages canvas {
    display: block;
    box-shadow: 0 2px 12px rgba(0,0,0,0.18);
    border-radius: 4px;
    max-width: 100%;
    height: auto;
    background: #fff;
    /* Smooth rendering */
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* ---- PDF NAV ---- */
.dv-pdf-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 10px 16px;
    background: #1a1a2e;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.dv-page-info {
    font-size: 13px;
    color: #ccc;
    min-width: 100px;
    text-align: center;
}

/* ---- OFFICE IFRAME ---- */
.dv-office-container {
    overflow: hidden;
    position: relative;
    background: #fff;
}

.dv-office-frame {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
    /* Touch-friendly scroll inside iframe */
    -webkit-overflow-scrolling: touch;
}

/* ---- FULLSCREEN MODE ---- */
.doc-viewer-wrap.dv-is-fullscreen {
    position: fixed !important;
    inset: 0 !important;
    z-index: 99999 !important;
    border-radius: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    margin: 0 !important;
}

.doc-viewer-wrap.dv-is-fullscreen .dv-pdf-container,
.doc-viewer-wrap.dv-is-fullscreen .dv-office-container {
    height: calc(100vh - 48px - 48px) !important;
}

.doc-viewer-wrap.dv-is-fullscreen .dv-office-frame {
    height: 100%;
}

/* ---- MOBILE ---- */
@media (max-width: 767px) {
    .dv-toolbar {
        padding: 8px 12px;
        min-height: 44px;
    }

    .dv-title {
        font-size: 13px;
    }

    .dv-btn {
        padding: 6px 8px;
        font-size: 13px;
        min-width: 30px;
        min-height: 30px;
    }

    .dv-zoom-level {
        display: none; /* Hide on small screens to save space */
    }

    .dv-pdf-pages {
        padding: 12px 6px;
        gap: 12px;
    }

    .dv-pdf-nav {
        padding: 8px 12px;
    }

    .dv-page-info {
        font-size: 12px;
    }
}

/* Touch drag scroll indicator for mobile */
.dv-pdf-container::after {
    content: '';
    display: none;
}

@media (hover: none) and (pointer: coarse) {
    .dv-pdf-container {
        /* Ensure native-like touch scrolling */
        touch-action: pan-y pinch-zoom;
    }
}