:root{--ink: #111827;--muted: #6b7280;--border: #e5e7eb;--bg: #f8f9fb;--accent: #2563eb;--accent-bg: #eff6ff;--income: #16a34a;--income-bg: #f0fdf4;--expense: #dc2626;--expense-bg: #fef2f2;--warn: #d97706;--warn-bg: #fffbeb}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg)}.app-shell{display:flex;min-height:100vh}.sidebar{width:220px;background:#fff;border-right:1px solid var(--border);padding:20px 0;display:flex;flex-direction:column}.sidebar h1{font-size:17px;padding:0 20px;margin:0 0 20px;display:flex;align-items:center;gap:8px}.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:6px;background:var(--accent);color:#fff;font-size:14px}.sidebar nav{flex:1}.sidebar nav a{display:flex;align-items:center;gap:10px;padding:9px 20px;color:var(--muted);text-decoration:none;font-size:14px}.sidebar nav a.active{color:#fff;background:var(--accent);font-weight:500}.sidebar nav a:not(.active):hover{color:var(--ink);background:var(--bg)}.sidebar-footer{padding:12px 20px 0;border-top:1px solid var(--border);margin-top:12px}.user-email{font-size:12px;color:var(--muted);margin-bottom:8px}.signout-link{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);text-decoration:none}.signout-link:hover{color:var(--ink)}.main{flex:1;padding:32px 40px;max-width:1100px}.page-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:24px}.page-header h2{margin:0 0 4px;font-size:24px}.page-header p{margin:0;color:var(--muted);font-size:14px}table{width:100%;border-collapse:collapse}th{text-align:left;font-size:11px;letter-spacing:.03em;text-transform:uppercase;color:var(--muted);border-bottom:1px solid var(--border);padding:10px}td{padding:12px 10px;border-bottom:1px solid var(--border);font-size:14px}tr:last-child td{border-bottom:none}.amount-in{color:var(--income);font-weight:500}.amount-out{color:var(--expense);font-weight:500}.badge{display:inline-block;padding:3px 10px;border-radius:12px;font-size:12px;font-weight:500}.badge-draft{background:#f3f4f6;color:#6b7280}.badge-sent{background:var(--accent-bg);color:#1e40af}.badge-paid{background:var(--income-bg);color:#15803d}.badge-overdue,.badge-unpaid{background:var(--warn-bg);color:var(--warn)}.btn{display:inline-flex;align-items:center;gap:6px;background:var(--accent);color:#fff;border:none;border-radius:6px;padding:9px 16px;font-size:14px;cursor:pointer;font-weight:500}.btn:hover{opacity:.9}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-icon{background:none;border:none;color:var(--muted);cursor:pointer;padding:4px;display:inline-flex}.btn-icon:hover{color:var(--ink)}.card{background:#fff;border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:20px}.card-row{display:flex;gap:16px;margin-bottom:20px}.stat{flex:1;position:relative}.stat .label{font-size:13px;color:var(--muted)}.stat .value{font-size:26px;font-weight:600;margin-top:6px}.stat .sub{font-size:12px;color:var(--muted);margin-top:4px}.stat-icon{position:absolute;top:16px;right:16px;width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center}.stat-icon.income{background:var(--income-bg);color:var(--income)}.stat-icon.expense{background:var(--expense-bg);color:var(--expense)}.stat-icon.neutral{background:var(--accent-bg);color:var(--accent)}.stat-icon.warn{background:var(--warn-bg);color:var(--warn)}.two-col{display:grid;grid-template-columns:2fr 1fr;gap:20px;align-items:start}.card-title-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}.card-title-row h3{margin:0;font-size:15px}.link{color:var(--accent);text-decoration:none;font-size:13px;font-weight:500}.quick-action{display:flex;align-items:center;gap:10px;width:100%;text-align:left;padding:12px 14px;margin-bottom:8px;border:1px solid var(--border);border-radius:8px;background:#fff;font-size:14px;cursor:pointer}.quick-action:hover{background:var(--bg)}.filter-pills{display:flex;gap:8px;margin:16px 0;flex-wrap:wrap}.pill{padding:6px 14px;border-radius:16px;border:1px solid var(--border);background:#fff;font-size:13px;cursor:pointer;color:var(--muted)}.pill.active{background:var(--accent);border-color:var(--accent);color:#fff}.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}.contact-card .name{font-weight:600;font-size:15px;margin-bottom:6px}.contact-card .meta{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:6px;margin-top:4px}.tab-row{display:flex;gap:4px;margin-bottom:16px}.tab{display:flex;align-items:center;gap:6px;padding:8px 16px;border-radius:6px;border:1px solid var(--border);background:#fff;font-size:14px;cursor:pointer;color:var(--muted)}.tab.active{background:var(--bg);color:var(--ink);font-weight:500;border-color:var(--ink)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.form-field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.form-field label{font-size:13px;font-weight:500}.form-field.full{grid-column:1 / -1}input,select,textarea{padding:9px 10px;border:1px solid var(--border);border-radius:6px;font-size:14px;font-family:inherit;width:100%}textarea{resize:vertical}