/* ===== DSLLM DOCUMENT VIEWER STYLES ===== */
/* 📚 Professional Document Viewer Component */

.document-viewer-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10005;
    opacity: 0;
    transition: all 0.3s ease;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.document-viewer-modal.show {
    display: flex;
    opacity: 1;
}

.document-viewer-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    cursor: pointer;
}

.document-viewer-container {
    position: relative;
    width: 90%;
    max-width: 1400px;
    height: 90%;
    margin: auto;
    background: var(--bg-color);
    border-radius: 16px;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.85) translateY(20px);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.document-viewer-modal.show .document-viewer-container {
    transform: scale(1) translateY(0);
}

/* ===== HEADER SECTION ===== */
.document-viewer-header {
    padding: 1.25rem 2rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.document-viewer-header h3 {
    margin: 0;
    font-size: 1.3rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.document-viewer-header h3::before {
    content: '📄';
    font-size: 1.5rem;
}

.document-viewer-actions {
    display: flex;
    gap: 0.75rem;
}

.doc-action-btn {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    width: 42px;
    height: 42px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    position: relative;
    overflow: hidden;
}

.doc-action-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.doc-action-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.doc-action-btn:hover::before {
    left: 100%;
}

.doc-action-btn:active {
    transform: translateY(0);
}

/* ===== CONTENT SECTION ===== */
.document-viewer-content {
    flex: 1;
    padding: 2.5rem;
    overflow-y: auto;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.7;
    position: relative;
}

.document-viewer-content::-webkit-scrollbar {
    width: 8px;
}

.document-viewer-content::-webkit-scrollbar-track {
    background: var(--border-color);
    border-radius: 4px;
}

.document-viewer-content::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

.document-viewer-content::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* ===== LOADING STATES ===== */
.document-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-light);
    text-align: center;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: documentSpin 1.2s linear infinite;
    margin-bottom: 1.5rem;
}

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

.loading-text {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.loading-subtext {
    font-size: 0.9rem;
    opacity: 0.7;
}

/* ===== DOCUMENT ERROR STATE ===== */
.document-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-light);
    text-align: center;
}

.document-error-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.document-error h4 {
    color: #dc2626;
    margin-bottom: 0.5rem;
}

/* ===== FOOTER SECTION ===== */
.document-viewer-footer {
    padding: 1.25rem 2rem;
    background: var(--dark-bg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-light);
    border-top: 1px solid var(--border-color);
}

[data-theme="dark"] .document-viewer-footer {
    background: #1e293b;
}

.document-info {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.document-info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.document-info-item::before {
    content: attr(data-icon);
    opacity: 0.7;
}

.document-language-toggle {
    display: flex;
    gap: 0.25rem;
    background: var(--bg-color);
    border-radius: 8px;
    padding: 3px;
    border: 1px solid var(--border-color);
}

.document-language-toggle button {
    padding: 0.4rem 0.8rem;
    border: none;
    background: transparent;
    color: var(--text-light);
    font-size: 0.85rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
}

.document-language-toggle button:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
}

.document-language-toggle button.active {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 2px 4px rgba(99, 102, 241, 0.3);
}

/* ===== MARKDOWN CONTENT STYLING ===== */
.document-viewer-content h1,
.document-viewer-content h2,
.document-viewer-content h3,
.document-viewer-content h4,
.document-viewer-content h5,
.document-viewer-content h6 {
    color: var(--primary-color);
    margin-top: 2.5rem;
    margin-bottom: 1.25rem;
    font-weight: 600;
    line-height: 1.3;
}

.document-viewer-content h1:first-child,
.document-viewer-content h2:first-child {
    margin-top: 0;
}

.document-viewer-content h1 {
    font-size: 2.5rem;
    border-bottom: 3px solid var(--primary-color);
    padding-bottom: 0.75rem;
    margin-bottom: 2rem;
}

.document-viewer-content h2 {
    font-size: 2rem;
    border-bottom: 2px solid rgba(99, 102, 241, 0.3);
    padding-bottom: 0.5rem;
}

.document-viewer-content h3 {
    font-size: 1.5rem;
}

.document-viewer-content h4 {
    font-size: 1.25rem;
}

.document-viewer-content p {
    margin-bottom: 1.5rem;
    text-align: justify;
}

.document-viewer-content code {
    background: var(--border-color);
    color: var(--primary-dark);
    padding: 0.3rem 0.6rem;
    border-radius: 6px;
    font-family: 'SF Mono', 'Monaco', 'Cascadia Code', 'Roboto Mono', monospace;
    font-size: 0.9em;
    font-weight: 500;
}

.document-viewer-content pre {
    background: var(--dark-bg);
    color: #f8f8f2;
    padding: 1.5rem;
    border-radius: 12px;
    overflow-x: auto;
    margin: 1.5rem 0;
    border: 1px solid rgba(99, 102, 241, 0.2);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.document-viewer-content pre code {
    background: none;
    color: inherit;
    padding: 0;
    border-radius: 0;
    font-weight: normal;
}

.document-viewer-content blockquote {
    border-left: 4px solid var(--primary-color);
    margin: 1.5rem 0;
    padding: 1.25rem 1.5rem;
    background: rgba(99, 102, 241, 0.05);
    border-radius: 0 8px 8px 0;
    font-style: italic;
}

.document-viewer-content ul,
.document-viewer-content ol {
    margin: 1.5rem 0;
    padding-left: 2rem;
}

.document-viewer-content li {
    margin-bottom: 0.5rem;
}

.document-viewer-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.document-viewer-content th,
.document-viewer-content td {
    border: 1px solid var(--border-color);
    padding: 1rem;
    text-align: left;
}

.document-viewer-content th {
    background: var(--primary-color);
    color: white;
    font-weight: 600;
}

.document-viewer-content tr:nth-child(even) {
    background: rgba(99, 102, 241, 0.02);
}

.document-viewer-content a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
}

.document-viewer-content a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* ===== DOC CARDS ENHANCEMENT ===== */
.doc-card {
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.doc-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.6s;
}

.doc-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: var(--primary-color);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15), 
                0 0 0 1px rgba(99, 102, 241, 0.3);
}

.doc-card:hover::before {
    left: 100%;
}

.doc-card:active {
    transform: translateY(-4px) scale(1.01);
}

.doc-card .doc-link {
    color: var(--primary-color);
    font-weight: 500;
    transition: all 0.2s;
    display: inline-block;
    margin-top: 0.75rem;
    position: relative;
}

.doc-card:hover .doc-link {
    color: var(--primary-dark);
    transform: translateX(4px);
}

.doc-card .doc-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.doc-card:hover .doc-link::after {
    width: 100%;
}

/* ===== FULLSCREEN MODE ===== */
.document-viewer-container.fullscreen {
    width: 100% !important;
    height: 100% !important;
    max-width: none !important;
    border-radius: 0 !important;
}

.document-viewer-container.fullscreen .document-viewer-header {
    border-radius: 0;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .document-viewer-container {
        width: 95%;
        height: 95%;
    }
    
    .document-viewer-content {
        padding: 2rem;
    }
}

@media (max-width: 768px) {
    .document-viewer-container {
        width: 100%;
        height: 100%;
        border-radius: 0;
    }
    
    .document-viewer-header {
        padding: 1rem 1.5rem;
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .document-viewer-header h3 {
        font-size: 1.1rem;
    }
    
    .document-viewer-content {
        padding: 1.5rem;
    }
    
    .document-viewer-footer {
        padding: 1rem 1.5rem;
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .document-info {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .doc-action-btn {
        width: 38px;
        height: 38px;
    }
    
    .document-viewer-content h1 {
        font-size: 2rem;
    }
    
    .document-viewer-content h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .document-viewer-actions {
        gap: 0.5rem;
    }
    
    .document-language-toggle {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .document-language-toggle button {
        padding: 0.3rem 0.6rem;
        font-size: 0.8rem;
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    .document-viewer-modal {
        position: static !important;
        width: auto !important;
        height: auto !important;
        display: block !important;
        opacity: 1 !important;
    }
    
    .document-viewer-overlay,
    .document-viewer-header,
    .document-viewer-footer {
        display: none !important;
    }
    
    .document-viewer-container {
        width: 100% !important;
        height: auto !important;
        max-width: none !important;
        border-radius: 0 !important;
        box-shadow: none !important;
        transform: none !important;
    }
    
    .document-viewer-content {
        padding: 0 !important;
        overflow: visible !important;
    }
}

/* ===== ACCESSIBILITY ENHANCEMENTS ===== */
.document-viewer-modal:focus-within {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.doc-action-btn:focus {
    outline: 2px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
}

.document-language-toggle button:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* ===== ANIMATION ENHANCEMENTS ===== */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.document-viewer-content > * {
    animation: slideInUp 0.6s ease-out;
}

/* ===== HIGH CONTRAST MODE ===== */
@media (prefers-contrast: high) {
    .document-viewer-container {
        border: 2px solid var(--text-color);
    }
    
    .doc-action-btn {
        border: 2px solid rgba(255, 255, 255, 0.5);
    }
}