:root{--bg: #f1f5f9;--surface: #fff;--surface-alt: #f8fafc;--border: #e2e8f0;--text: #1e293b;--text-muted: #64748b;--text-dim: #94a3b8;--text-dark: #0f172a;--primary: #2563eb;--primary-hover: #1d4ed8;--shadow: 0 1px 4px rgba(0,0,0,.08);--input-bg: #fff;--input-text: #1e293b}[data-theme=dark]{--bg: #0f172a;--surface: #1e293b;--surface-alt: #162032;--border: #334155;--text: #e2e8f0;--text-muted: #94a3b8;--text-dim: #64748b;--text-dark: #f1f5f9;--shadow: 0 1px 4px rgba(0,0,0,.3);--input-bg: #0f172a;--input-text: #e2e8f0}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:Segoe UI,system-ui,sans-serif;background:var(--bg);color:var(--text);font-size:14px;transition:background .2s,color .2s}a{text-decoration:none;color:inherit}.app-layout{display:flex;min-height:100vh}.sidebar{width:220px;min-width:220px;background:#1e293b;color:#cbd5e1;display:flex;flex-direction:column;padding:0}.sidebar-brand{display:flex;align-items:center;gap:10px;padding:22px 20px;font-size:16px;font-weight:700;color:#fff;border-bottom:1px solid #334155}.brand-icon{font-size:20px}.sidebar-nav{flex:1;padding:16px 0;display:flex;flex-direction:column;gap:2px}.nav-item{display:flex;align-items:center;gap:10px;padding:10px 20px;border-radius:6px;margin:0 8px;color:#94a3b8;font-size:14px;transition:all .15s}.nav-item:hover{background:#334155;color:#e2e8f0}.nav-item.active{background:#2563eb;color:#fff}.btn-logout{margin:16px;padding:9px;background:none;border:1px solid #334155;color:#94a3b8;border-radius:6px;cursor:pointer;font-size:13px;transition:all .15s}.btn-logout:hover{background:#334155;color:#e2e8f0}.main-content{flex:1;padding:32px;overflow-y:auto}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.page-header h1{font-size:22px;font-weight:700;color:var(--text-dark)}.card{background:var(--surface);border-radius:10px;box-shadow:var(--shadow);padding:24px}.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:var(--surface);border-radius:10px;padding:20px 24px;box-shadow:var(--shadow)}.stat-card .stat-label{font-size:12px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px}.stat-card .stat-value{font-size:22px;font-weight:700;color:var(--text-dark)}.stat-card .stat-sub{font-size:11px;color:var(--text-dim);margin-top:4px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse}thead th{text-align:left;padding:10px 14px;font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;border-bottom:2px solid var(--border);background:var(--surface-alt)}tbody tr{border-bottom:1px solid var(--border);transition:background .1s}tbody tr:hover{background:var(--surface-alt)}tbody td{padding:12px 14px}.text-right{text-align:right}.text-mono{font-family:Courier New,monospace}.badge{display:inline-block;padding:3px 10px;border-radius:12px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.04em}.badge-draft{background:#e2e8f0;color:#475569}.badge-sent{background:#dbeafe;color:#1d4ed8}.badge-paid{background:#dcfce7;color:#15803d}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:7px;font-size:13px;font-weight:500;cursor:pointer;border:none;transition:all .15s;white-space:nowrap}.btn-primary{background:#2563eb;color:#fff}.btn-primary:hover{background:#1d4ed8}.btn-secondary{background:var(--surface-alt);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--border)}.btn-danger{background:#fee2e2;color:#b91c1c}.btn-danger:hover{background:#fecaca}.btn-success{background:#dcfce7;color:#15803d}.btn-success:hover{background:#bbf7d0}.btn-sm{padding:5px 11px;font-size:12px}.btn-group{display:flex;gap:6px;flex-wrap:wrap}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.form-grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}.form-full{grid-column:1 / -1}.form-group{display:flex;flex-direction:column;gap:5px}label{font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em}input[type=text],input[type=number],input[type=date],input[type=email],input[type=password],select,textarea{padding:9px 12px;border:1px solid var(--border);border-radius:7px;font-size:14px;color:var(--input-text);background:var(--input-bg);transition:border-color .15s;outline:none;width:100%}input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1a}input[readonly]{background:var(--surface-alt);color:var(--text-muted);cursor:default}textarea{resize:vertical;min-height:80px}.form-actions{display:flex;gap:10px;margin-top:24px;justify-content:flex-end}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1e293b,#0f172a)}.login-card{background:var(--surface);border-radius:14px;padding:40px 36px;width:100%;max-width:380px;box-shadow:0 20px 60px #0000004d}.login-card h1{font-size:22px;color:var(--text-dark);margin-bottom:6px}.login-card p{color:var(--text-muted);font-size:13px;margin-bottom:28px}.login-card .form-group{margin-bottom:16px}.login-btn{width:100%;margin-top:8px;justify-content:center;padding:11px;font-size:14px}.login-error{color:#dc2626;font-size:13px;margin-top:10px;text-align:center}.lines-editor{margin:0}.lines-editor table{border:1px solid var(--border);border-radius:8px;overflow:hidden}.lines-editor thead th{background:var(--surface-alt)}.lines-editor td input{border:none;background:transparent;padding:6px 8px;color:var(--input-text)}.lines-editor td input:focus{background:#2563eb14;border-radius:4px}.lines-editor td{padding:6px 8px}.amount-cell{font-weight:600;color:var(--text-dark);font-family:Courier New,monospace}.totals-box{background:var(--surface-alt);border:1px solid var(--border);border-radius:8px;padding:16px 20px;min-width:280px}.totals-row{display:flex;justify-content:space-between;padding:5px 0;font-size:13px}.totals-row.grand{font-size:16px;font-weight:700;border-top:2px solid var(--border);margin-top:8px;padding-top:10px}.totals-row .label{color:var(--text-muted)}.totals-row .value{font-family:Courier New,monospace;font-weight:500}.invoice-preview{background:var(--surface);border-radius:10px;padding:40px 50px;max-width:760px;box-shadow:var(--shadow)}.invoice-preview h1{text-align:center;font-size:26px;letter-spacing:3px;margin-bottom:24px;color:var(--text-dark)}.preview-meta{display:flex;justify-content:space-between;margin-bottom:24px;font-size:13px}.preview-meta .from,.preview-meta .to{line-height:1.7}.preview-meta .to{text-align:right}.preview-section-title{font-weight:700;font-size:13px;color:var(--text);border-bottom:1px solid var(--border);padding-bottom:4px;margin:20px 0 10px;text-transform:uppercase;letter-spacing:.05em}.preview-highlight{background:var(--surface-alt);border-radius:6px;padding:12px 16px;font-size:13px;line-height:1.7;color:var(--text)}.preview-lines-table{font-size:13px}.preview-lines-table thead th{border-bottom:2px solid var(--border);background:var(--surface-alt)}.preview-lines-table tbody td{border-bottom:1px solid var(--border)}.preview-lines-table .subtotal-row td{font-weight:700;border-top:2px solid var(--border);border-bottom:none;background:var(--surface-alt)}.preview-totals{margin-top:16px}.preview-total-row{display:flex;justify-content:flex-end;gap:0;font-size:13px;padding:4px 0}.preview-total-row .label{min-width:280px;text-align:right;padding-right:20px;color:var(--text-muted)}.preview-total-row .value{min-width:120px;text-align:right;font-family:Courier New,monospace}.preview-total-row.grand{font-size:16px;font-weight:700;border-top:2px solid var(--border);margin-top:8px;padding-top:10px}.preview-total-row.grand .label{color:var(--text-dark)}.filters-bar{display:flex;gap:10px;margin-bottom:20px;align-items:center;flex-wrap:wrap}.filters-bar select,.filters-bar input{width:auto}.search-input{min-width:220px}.filter-count{font-size:12px;color:var(--text-muted);margin-left:auto}.btn-theme{margin:0 16px 8px;padding:9px;background:none;border:1px solid #334155;color:#94a3b8;border-radius:6px;cursor:pointer;font-size:13px;transition:all 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0}.section-title-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.section-title-row h2{font-size:15px;font-weight:700;color:#0f172a}