/* Modern PDF Viewer - Full Width Design */
:root {
    --pdf-primary: #1a73e8;
    --pdf-primary-dark: #1557b0;
    --pdf-bg: #ffffff;
    --pdf-surface: #f8f9fa;
    --pdf-text: #202124;
    --pdf-text-secondary: #5f6368;
    --pdf-border: #dadce0;
    --pdf-shadow: 0 8px 32px rgba(0,0,0,0.12);
    --pdf-radius: 16px;
    --pdf-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Container */
.modern-pdf-container {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    width: 100%;
    max-width: 100%;
    margin: 30px 0;
    background: var(--pdf-bg);
    border-radius: var(--pdf-radius);
    box-shadow: var(--pdf-shadow);
    overflow: hidden;
    position: relative;
    transition: var(--pdf-transition);
}

/* Themes */
.modern-pdf-container.theme-dark {
    --pdf-bg: #1a1a1a;
    --pdf-surface: #2d2d2d;
    --pdf-text: #ffffff;
    --pdf-text-secondary: #b0b0b0;
    --pdf-border: #404040;
    --pdf-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.modern-pdf-container.theme-gradient {
    --pdf-primary: #6c5ce7;
    --pdf-primary-dark: #5a4bd1;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.modern-pdf-container.theme-gradient .pdf-viewer-wrapper {
    background: rgba(255,255,255,0.95);
}

.modern-pdf-container.theme-gradient .pdf-header,
.modern-pdf-container.theme-gradient .pdf-toolbar,
.modern-pdf-container.theme-gradient .pdf-footer {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
}

/* Header */
.pdf-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--pdf-bg);
    border-bottom: 1px solid var(--pdf-border);
    flex-wrap: wrap;
    gap: 10px;
}

.pdf-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.pdf-icon {
    font-size: 24px;
    color: var(--pdf-primary);
}

.pdf-title {
    font-weight: 600;
    font-size: 16px;
    color: var(--pdf-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 300px;
}

.pdf-badge {
    background: var(--pdf-primary);
    color: white;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pdf-header-right {
    display: flex;
    align-items: center;
}

.pdf-header-controls {
    display: flex;
    gap: 6px;
}

.pdf-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    color: var(--pdf-text-secondary);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--pdf-transition);
    font-size: 16px;
}

.pdf-btn:hover {
    background: var(--pdf-surface);
    color: var(--pdf-text);
    transform: scale(1.05);
}

.pdf-btn:active {
    transform: scale(0.95);
}

.pdf-download-btn {
    color: var(--pdf-primary);
}

.pdf-download-btn:hover {
    background: rgba(26, 115, 232, 0.1);
}

/* Toolbar */
.pdf-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    background: var(--pdf-surface);
    border-bottom: 1px solid var(--pdf-border);
    flex-wrap: wrap;
    gap: 10px;
}

.pdf-toolbar-left,
.pdf-toolbar-center,
.pdf-toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.pdf-tool-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    color: var(--pdf-text-secondary);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--pdf-transition);
    font-size: 14px;
}

.pdf-tool-btn:hover {
    background: var(--pdf-bg);
    color: var(--pdf-text);
}

.pdf-tool-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.pdf-page-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 14px;
    font-weight: 500;
    color: var(--pdf-text);
    padding: 0 12px;
}

.pdf-current-page {
    color: var(--pdf-primary);
    font-weight: 700;
}

.pdf-separator {
    color: var(--pdf-text-secondary);
}

.pdf-total-pages {
    color: var(--pdf-text-secondary);
}

.pdf-zoom-controls {
    display: flex;
    align-items: center;
    gap: 6px;
}

.pdf-zoom-level {
    font-size: 13px;
    font-weight: 500;
    color: var(--pdf-text-secondary);
    min-width: 45px;
    text-align: center;
}

/* Search Box */
.pdf-search-box {
    position: relative;
    display: flex;
    align-items: center;
    gap: 4px;
}

.pdf-search-input {
    padding: 6px 12px;
    border: 1px solid var(--pdf-border);
    border-radius: 8px;
    font-size: 13px;
    background: var(--pdf-bg);
    color: var(--pdf-text);
    transition: var(--pdf-transition);
    width: 180px;
}

.pdf-search-input:focus {
    outline: none;
    border-color: var(--pdf-primary);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}

.pdf-search-results {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    background: var(--pdf-bg);
    border: 1px solid var(--pdf-border);
    border-radius: 8px;
    box-shadow: var(--pdf-shadow);
    max-height: 200px;
    overflow-y: auto;
    display: none;
    z-index: 1000;
}

.pdf-search-results.active {
    display: block;
}

.pdf-search-result-item {
    padding: 8px 12px;
    cursor: pointer;
    font-size: 13px;
    color: var(--pdf-text);
    transition: var(--pdf-transition);
}

.pdf-search-result-item:hover {
    background: var(--pdf-surface);
}

.pdf-search-result-item .highlight {
    background: #fbbc04;
    padding: 0 2px;
    border-radius: 2px;
}

/* Viewer Wrapper */
.pdf-viewer-wrapper {
    position: relative;
    background: #e8e8e8;
    overflow: auto;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 500px;
    width: 100%;
}

.pdf-canvas-container {
    width: 100%;
    display: flex;
    justify-content: center;
    padding: 20px;
}

.pdf-canvas {
    max-width: 100%;
    height: auto !important;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    background: white;
    border-radius: 4px;
    transition: var(--pdf-transition);
}

/* Loading Overlay */
.pdf-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(8px);
    gap: 20px;
}

.pdf-loading-spinner {
    position: relative;
    width: 60px;
    height: 60px;
}

.spinner-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: var(--pdf-primary);
    animation: spin 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

.spinner-ring:nth-child(2) {
    animation-delay: -0.45s;
    border-top-color: #fbbc04;
}

.spinner-ring:nth-child(3) {
    animation-delay: -0.9s;
    border-top-color: #ea4335;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.pdf-loading-text {
    font-size: 16px;
    color: var(--pdf-text-secondary);
    font-weight: 500;
}

.pdf-loading-progress {
    width: 200px;
    height: 4px;
    background: var(--pdf-border);
    border-radius: 2px;
    overflow: hidden;
}

.pdf-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--pdf-primary), #fbbc04);
    width: 0%;
    border-radius: 2px;
    transition: width 0.3s ease;
}

/* Error Overlay */
.pdf-error-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(8px);
    padding: 40px;
    text-align: center;
}

.pdf-error-icon {
    font-size: 48px;
    color: #ea4335;
    margin-bottom: 16px;
}

.pdf-error-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--pdf-text);
    margin-bottom: 8px;
}

.pdf-error-message {
    font-size: 14px;
    color: var(--pdf-text-secondary);
    margin-bottom: 20px;
    max-width: 400px;
}

.pdf-retry-btn {
    padding: 10px 24px;
    background: var(--pdf-primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--pdf-transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.pdf-retry-btn:hover {
    background: var(--pdf-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(26, 115, 232, 0.3);
}

/* Thumbnails */
.pdf-thumbnails {
    background: var(--pdf-surface);
    border-top: 1px solid var(--pdf-border);
    padding: 16px;
    max-height: 200px;
    overflow-y: auto;
}

.pdf-thumbnails-wrapper {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.pdf-thumbnail-item {
    cursor: pointer;
    border: 2px solid transparent;
    border-radius: 8px;
    transition: var(--pdf-transition);
    padding: 4px;
    background: white;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.pdf-thumbnail-item:hover {
    border-color: var(--pdf-primary);
    transform: scale(1.05);
}

.pdf-thumbnail-item.active {
    border-color: var(--pdf-primary);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.2);
}

.pdf-thumbnail-item canvas {
    width: 120px;
    height: auto;
    display: block;
}

/* Footer */
.pdf-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    background: var(--pdf-bg);
    border-top: 1px solid var(--pdf-border);
    font-size: 12px;
    color: var(--pdf-text-secondary);
}

.pdf-page-size {
    font-weight: 500;
}

.pdf-copyright {
    opacity: 0.6;
}

/* Fullscreen */
.modern-pdf-container:-webkit-full-screen {
    width: 100vw;
    height: 100vh;
    max-width: 100vw;
    border-radius: 0;
}

.modern-pdf-container:-moz-full-screen {
    width: 100vw;
    height: 100vh;
    max-width: 100vw;
    border-radius: 0;
}

.modern-pdf-container:fullscreen {
    width: 100vw;
    height: 100vh;
    max-width: 100vw;
    border-radius: 0;
}

.modern-pdf-container:-webkit-full-screen .pdf-viewer-wrapper {
    height: calc(100vh - 200px) !important;
}

.modern-pdf-container:-moz-full-screen .pdf-viewer-wrapper {
    height: calc(100vh - 200px) !important;
}

.modern-pdf-container:fullscreen .pdf-viewer-wrapper {
    height: calc(100vh - 200px) !important;
}

/* Embed Styles */
.modern-embed-wrapper {
    width: 100%;
    margin: 20px 0;
    border-radius: var(--pdf-radius);
    overflow: hidden;
    box-shadow: var(--pdf-shadow);
}

.modern-pdf-embed {
    width: 100%;
    display: block;
    border: none;
}

/* Download Button */
.modern-pdf-download {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: var(--pdf-primary);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    font-size: 14px;
    transition: var(--pdf-transition);
    margin: 10px 0;
}

.modern-pdf-download:hover {
    background: var(--pdf-primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(26, 115, 232, 0.3);
    text-decoration: none;
}

.modern-pdf-download.size-small {
    padding: 8px 16px;
    font-size: 12px;
}

.modern-pdf-download.size-large {
    padding: 16px 32px;
    font-size: 16px;
}

.modern-pdf-download .download-arrow {
    transition: var(--pdf-transition);
}

.modern-pdf-download:hover .download-arrow {
    transform: translateX(4px);
}

/* Error Message */
.modern-pdf-error {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: #fef3f2;
    border-left: 4px solid #ea4335;
    border-radius: 8px;
    color: #b31412;
    margin: 20px 0;
}

.modern-pdf-error i {
    font-size: 20px;
}

/* Responsive */
@media (max-width: 1024px) {
    .pdf-toolbar {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    
    .pdf-toolbar-left,
    .pdf-toolbar-center,
    .pdf-toolbar-right {
        justify-content: center;
    }
    
    .pdf-search-input {
        width: 140px;
    }
}

@media (max-width: 768px) {
    .pdf-header {
        flex-direction: column;
        align-items: flex-start;
        padding: 12px 16px;
    }
    
    .pdf-header-left {
        width: 100%;
    }
    
    .pdf-title {
        max-width: 200px;
        font-size: 14px;
    }
    
    .pdf-header-right {
        width: 100%;
        justify-content: flex-end;
    }
    
    .pdf-toolbar {
        padding: 10px 16px;
        flex-direction: column;
    }
    
    .pdf-toolbar-left,
    .pdf-toolbar-center,
    .pdf-toolbar-right {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .pdf-search-input {
        width: 100%;
    }
    
    .pdf-viewer-wrapper {
        min-height: 400px;
    }
    
    .pdf-canvas-container {
        padding: 10px;
    }
    
    .pdf-thumbnail-item canvas {
        width: 80px;
    }
    
    .pdf-footer {
        flex-direction: column;
        gap: 4px;
        text-align: center;
        padding: 10px 16px;
    }
}

@media (max-width: 480px) {
    .modern-pdf-container {
        margin: 15px 0;
        border-radius: 12px;
    }
    
    .pdf-header {
        padding: 10px 12px;
    }
    
    .pdf-icon {
        font-size: 20px;
    }
    
    .pdf-title {
        font-size: 12px;
        max-width: 120px;
    }
    
    .pdf-toolbar {
        padding: 8px 12px;
    }
    
    .pdf-tool-btn {
        width: 32px;
        height: 32px;
        font-size: 12px;
    }
    
    .pdf-page-indicator {
        font-size: 12px;
        padding: 0 8px;
    }
    
    .pdf-zoom-level {
        font-size: 11px;
        min-width: 35px;
    }
    
    .pdf-viewer-wrapper {
        min-height: 300px;
    }
    
    .pdf-canvas-container {
        padding: 6px;
    }
    
    .pdf-loading-text {
        font-size: 14px;
    }
    
    .pdf-loading-progress {
        width: 150px;
    }
}