:root{--navy:#12243c;--ink:#182a42;--muted:#718096;--teal:#0c817d;--line:#dce3eb;--surface:#fff;--bg:#f3f6fa;--red:#b52539}*{box-sizing:border-box}body{background:var(--bg);font-family:Tahoma,Arial,sans-serif;line-height:1.65;color:var(--ink);margin:0}a{color:inherit;text-decoration:none}.top{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;background:var(--navy);color:#fff;padding:12px max(20px,calc((100vw - 1300px)/2))}.top nav{display:flex;gap:16px;flex-wrap:wrap;font-size:14px}.top nav a:hover{color:#7fe3d3}.brand{font-size:24px;letter-spacing:1px}.brand span{color:#78e2c6}.container{max-width:1300px;margin:24px auto;padding:0 18px;min-height:75vh}h1{font-size:26px;margin:14px 0 22px}h2{font-size:18px;margin:0 0 16px}p{margin:8px 0 16px}.sub{color:var(--muted);font-size:14px}.panel{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:22px;margin-bottom:20px;box-shadow:0 3px 14px #23324609}.columns{display:grid;grid-template-columns:1fr 1fr;gap:20px}.statgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px;margin-bottom:20px}.stat{padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:14px;color:var(--muted);font-size:14px}.stat strong{display:block;color:var(--ink);font-size:24px;margin-top:12px;font-weight:800}label{display:block;margin:12px 0 14px;font-size:14px;font-weight:600}input,select{display:block;width:100%;margin-top:6px;padding:10px 12px;background:#fff;border:1px solid #cbd5e1;border-radius:8px;font:inherit;color:var(--ink)}input:focus,select:focus{outline:2px solid #80c4be;border-color:var(--teal)}.fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:0 14px}button{background:var(--teal);color:white;border:0;border-radius:8px;padding:11px 18px;font:inherit;font-weight:700;cursor:pointer;transition:filter .15s;margin:5px 0}button:hover{filter:brightness(.94)}button.secondary{background:#e1f0ef;color:#126b68}button.ghost{background:transparent;border:1px solid #ffffff63}button.danger{background:var(--red)}.alert{padding:14px 20px;border-radius:10px;margin:12px 0 20px}.alert.error{background:#fce9ed;color:#871d30}.alert.ok{background:#dff6e9;color:#175b3e}.scroll{max-width:100%;overflow-x:auto}table{width:100%;border-collapse:collapse;min-width:570px;font-size:14px}td,th{text-align:right;vertical-align:middle;padding:12px;border-bottom:1px solid var(--line)}th{background:#f3f6fb;white-space:nowrap}tr:hover td{background:#fafcfd}td input,td select{min-width:100px;margin:0}td .remove-line{background:#fdebed;color:#aa3045;padding:6px 10px}#sale-lines select,#purchase-lines select{min-width:180px}.big-total{font-size:20px;margin:20px 0}.big-total strong{color:var(--teal);font-size:28px}.invoice-summary{display:flex;justify-content:space-between;flex-wrap:wrap;gap:18px;border-top:1px solid var(--line);padding:20px 0}.invoice-summary strong{color:var(--navy)}.login{display:grid;place-items:center;min-height:75vh}.login .panel{width:min(450px,100%);padding:40px}.login h1{font-size:40px;color:var(--teal)}footer{padding:25px;text-align:center;color:#697689;font-size:12px}@media(max-width:760px){.columns{grid-template-columns:1fr}.top{padding:12px 20px}.top nav{gap:10px}.container{margin-top:16px}.panel{padding:16px}.stat strong{font-size:20px}}@media print{.top,footer,button,.alert{display:none!important}body{background:#fff}.container{margin:0;max-width:100%;padding:0}.panel{border:0;box-shadow:none}.scroll{overflow:visible}table{min-width:0}h1{font-size:20px}}