:root{--primary: #C62828;--primary-light: #EF5350;--secondary: #FFFFFF;--text-dark: #212121;--text-muted: #757575;--bg-light: #FAFAFA;--border-color: #E0E0E0;--shadow: 0 2px 8px rgba(0, 0, 0, .08);--radius: 8px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-light);color:var(--text-dark);line-height:1.6}a{text-decoration:none;color:inherit}.app-layout{min-height:100vh;display:flex;flex-direction:column}.main-content{flex:1;padding:24px 16px;max-width:1280px;margin:0 auto;width:100%}.page-title{font-size:1.75rem;font-weight:700;color:var(--primary);margin-bottom:8px}.page-subtitle{color:var(--text-muted);margin-bottom:24px}.documents-layout{display:grid;grid-template-columns:260px 1fr;gap:24px}@media(max-width:768px){.documents-layout{grid-template-columns:1fr}}.tag-sidebar{background:var(--secondary);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);height:fit-content;position:sticky;top:80px}@media(max-width:768px){.tag-sidebar{position:static}}.tag-sidebar h3{font-size:1rem;margin-bottom:12px;color:var(--primary)}.tag-list{list-style:none}.tag-item{padding:8px 12px;border-radius:6px;cursor:pointer;transition:all .2s;margin-bottom:4px;font-size:.9rem}.tag-item:hover,.tag-item.active{background:#c628281a;color:var(--primary);font-weight:500}.doc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.doc-card{background:var(--secondary);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s;cursor:pointer;border:1px solid transparent}.doc-card:hover{transform:translateY(-2px);box-shadow:0 4px 16px #c6282826;border-color:var(--primary-light)}.doc-card-title{font-weight:600;font-size:1rem;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.doc-card-meta{font-size:.8rem;color:var(--text-muted);display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}.doc-card-tags{display:flex;flex-wrap:wrap;gap:4px}.search-bar{margin-bottom:24px}.load-more{text-align:center;margin-top:24px}.hero-section{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);color:var(--secondary);padding:48px 24px;border-radius:var(--radius);margin-bottom:32px;text-align:center}.hero-section h1{font-size:2rem;margin-bottom:8px}.hero-section p{opacity:.9;font-size:1.1rem}.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:32px}.stat-card{background:var(--secondary);padding:20px;border-radius:var(--radius);box-shadow:var(--shadow);text-align:center}.stat-card .stat-value{font-size:1.5rem;font-weight:700;color:var(--primary)}.stat-card .stat-label{color:var(--text-muted);font-size:.9rem}.admin-layout{min-height:100vh;background:var(--bg-light)}.admin-content{padding:24px;margin-left:220px}@media(max-width:768px){.admin-content{margin-left:0;padding:16px}}.upload-dropzone{border:2px dashed var(--border-color);border-radius:var(--radius);padding:48px 24px;text-align:center;transition:all .3s;background:var(--secondary);cursor:pointer}.upload-dropzone.drag-over{border-color:var(--primary);background:#c628280d}.upload-dropzone .upload-icon{font-size:48px;color:var(--primary-light);margin-bottom:16px}.preview-modal .preview-image{max-width:100%;max-height:70vh;object-fit:contain}.preview-modal .preview-pdf{width:100%;height:70vh;border:none}.empty-state{text-align:center;padding:48px 24px;color:var(--text-muted)}