:root{--bg-primary:#ffffff;--bg-secondary:#f7f7f8;--bg-card:#ffffff;--bg-card-hover:#f3f4f6;--border:#d1d5db;--border-subtle:#e5e7eb;--text-primary:#111827;--text-secondary:#4b5563;--text-muted:#6b7280;--accent:#111827;--accent-hover:#374151;--accent-subtle:#f3f4f6;--success:#047857;--success-subtle:#ecfdf5;--warning:#b45309;--warning-subtle:#fffbeb;--danger:#b91c1c;--danger-subtle:#fef2f2;--radius:8px;--radius-sm:8px;--shadow:0 8px 24px rgba(17,24,39,0.08);--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;--transition:200ms cubic-bezier(0.4,0,0.2,1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none;transition:color var(--transition)}a:hover{color:var(--accent-hover)}.app-layout{display:flex;min-height:100vh}.sidebar{width:260px;background:var(--bg-primary);border-right:1px solid var(--border-subtle);padding:24px 16px;display:flex;flex-direction:column;gap:4px;position:fixed;top:0;left:0;bottom:0;z-index:10}.sidebar-logo{padding:4px 12px 28px}.sidebar-logo img{display:block;height:auto;max-width:168px}.sidebar-nav{display:flex;flex-direction:column;gap:2px;flex:1 1}.sidebar-link{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:var(--radius-sm);color:var(--text-secondary);font-size:.875rem;font-weight:500;transition:all var(--transition)}.sidebar-link:hover{background:var(--bg-secondary);color:var(--text-primary)}.sidebar-link.active{background:var(--accent-subtle);color:var(--accent)}.sidebar-link svg{width:20px;height:20px;flex-shrink:0}.main-content{flex:1 1;margin-left:260px;padding:32px 40px;min-height:100vh}.card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius);padding:24px;transition:border-color var(--transition),box-shadow var(--transition)}.card:hover{border-color:var(--border)}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));grid-gap:16px;gap:16px}.dashboard-two-column{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:16px;gap:16px;margin-top:24px}.document-detail-grid{display:grid;grid-template-columns:minmax(0,1fr) 420px;grid-gap:24px;gap:24px;align-items:start}.document-form-split{display:grid;grid-template-columns:120px minmax(0,1fr);grid-gap:10px;gap:10px}.stat-card{text-align:center;padding:28px 20px}.stat-value{font-size:2.5rem;font-weight:700;letter-spacing:0;line-height:1;margin-bottom:8px}.stat-label{font-size:.8rem;color:var(--text-secondary);letter-spacing:0}.stat-accent{color:var(--accent)}.stat-success{color:var(--success)}.stat-warning{color:var(--warning)}.stat-danger{color:var(--danger)}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border:none;border-radius:var(--radius-sm);font-size:.875rem;font-weight:600;cursor:pointer;transition:all var(--transition);font-family:var(--font-sans)}.btn-primary{background:var(--accent);color:white}.btn-primary:hover{background:var(--accent-hover);box-shadow:var(--shadow)}.btn-secondary{background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg-card-hover)}.btn-danger{background:var(--danger);color:white}.btn-danger:hover{background:#991b1b;box-shadow:var(--shadow)}.table-container{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border-subtle)}table{width:100%;border-collapse:collapse}th{text-align:left;padding:12px 16px;font-size:.75rem;font-weight:600;color:var(--text-muted);letter-spacing:0;background:var(--bg-secondary)}td,th{border-bottom:1px solid var(--border-subtle)}td{padding:14px 16px;font-size:.875rem}tr:hover td{background:var(--bg-card)}.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:var(--radius-sm);font-size:.75rem;font-weight:600}.badge-success{background:var(--success-subtle);color:var(--success)}.badge-warning{background:var(--warning-subtle);color:var(--warning)}.badge-danger{background:var(--danger-subtle);color:var(--danger)}.badge-accent{background:var(--accent-subtle);color:var(--accent)}.input{width:100%;padding:10px 14px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:.875rem;font-family:var(--font-sans);transition:border-color var(--transition)}.input:focus{outline:none;border-color:var(--accent)}.input::placeholder{color:var(--text-muted)}textarea.input{resize:vertical;min-height:72px}.label{display:block;font-size:.8rem;font-weight:600;color:var(--text-secondary);margin-bottom:6px}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px}.page-title{font-size:1.75rem;font-weight:700;letter-spacing:0}.page-subtitle{font-size:.875rem;color:var(--text-secondary);margin-top:4px}.modal-backdrop{position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;padding:24px;background:rgba(17,24,39,.35)}.modal-card{width:100%;max-width:460px;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.upload-zone{border:1px dashed var(--border);border-radius:var(--radius);padding:48px;text-align:center;cursor:pointer;transition:all var(--transition)}.upload-zone.active,.upload-zone:hover{border-color:var(--accent);background:var(--bg-secondary)}.upload-icon{margin-bottom:12px}.upload-icon,.upload-text{font-size:.875rem;color:var(--text-secondary)}.upload-hint{color:var(--text-muted);font-size:.75rem;margin-top:8px}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-primary)}.auth-card{width:100%;max-width:420px;padding:40px}.auth-logo{display:block;width:220px;height:auto;margin:0 auto 28px}.auth-title{font-size:1.5rem;font-weight:700;text-align:center;margin-bottom:32px}.auth-form{display:flex;flex-direction:column;gap:16px}.auth-footer{text-align:center;margin-top:24px;font-size:.875rem;color:var(--text-secondary)}@media (max-width:768px){.sidebar{display:none}.main-content{margin-left:0;padding:20px 16px}.card-grid{grid-template-columns:repeat(2,1fr)}.dashboard-two-column,.document-detail-grid,.document-form-split{grid-template-columns:1fr}.page-header{align-items:flex-start;flex-direction:column;gap:12px}.upload-zone{padding:32px 18px}}