:root {
    --bg: #f3f6f4;
    --panel: #ffffff;
    --text: #1f2a24;
    --muted: #65736b;
    --green: #1f8a4c;
    --green-dark: #146333;
    --line: #dce5df;
    --red: #c0392b;
    --orange: #b76e00;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; background: var(--bg); color: var(--text); }
.topbar { display: flex; justify-content: space-between; gap: 16px; align-items: center; padding: 22px 28px; background: linear-gradient(135deg, #125d32, #1f8a4c); color: white; }
.topbar h1 { margin: 0 0 4px; font-size: 28px; }
.topbar p { margin: 0; opacity: .9; }
.logout { color: white; border: 1px solid rgba(255,255,255,.5); padding: 9px 12px; border-radius: 999px; text-decoration: none; }
.wrap { max-width: 1280px; margin: 0 auto; padding: 22px; }
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.tab { display: inline-flex; align-items: center; min-height: 42px; padding: 10px 16px; border-radius: 12px; background: white; color: var(--text); text-decoration: none; border: 1px solid var(--line); font-weight: 700; }
.tab.active { background: var(--green); color: white; border-color: var(--green); }
.cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin: 18px 0; }
.card, .total-box, .panel { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 8px 22px rgba(31, 42, 36, .06); }
.card { padding: 18px; }
.card span { display: block; color: var(--muted); font-size: 14px; margin-bottom: 8px; }
.card strong { display: block; font-size: 28px; color: var(--green-dark); }
.card small { display: block; margin-top: 8px; color: var(--muted); }
.total-box { padding: 18px; margin-bottom: 18px; }
.total-box h2, .panel h2 { margin: 0 0 14px; }
.mini-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.mini-grid div { background: #f6faf7; border: 1px solid var(--line); border-radius: 12px; padding: 12px; }
.mini-grid span { display: block; color: var(--muted); font-size: 13px; }
.mini-grid strong { display: block; margin-top: 5px; font-size: 20px; }
.panel { padding: 18px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th, td { padding: 11px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
th { color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .04em; }
.num { text-align: right; white-space: nowrap; }
.empty { text-align: center; color: var(--muted); padding: 28px; }
.badge { display: inline-flex; padding: 5px 10px; border-radius: 999px; font-weight: 700; font-size: 13px; }
.status-ok { background: #e4f7ea; color: #12662d; }
.status-cancel { background: #f1f1f1; color: #555; }
.status-error { background: #fde8e6; color: var(--red); }
.status-open { background: #fff3d8; color: var(--orange); }
.kas-form { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 18px; }
.kas-form label { display: flex; flex-direction: column; gap: 6px; font-weight: 700; color: var(--muted); }
.kas-form input, .kas-form textarea, .login-card input { width: 100%; border: 1px solid var(--line); border-radius: 12px; padding: 11px 12px; font: inherit; background: white; }
.kas-form .wide { grid-column: 1 / -1; }
button { border: 0; background: var(--green); color: white; border-radius: 12px; padding: 12px 18px; font-weight: 800; cursor: pointer; }
button:hover { background: var(--green-dark); }
.calculation { background: #f8fbf9; border: 1px solid var(--line); border-radius: 16px; padding: 16px; }
.calculation h3 { margin: 0 0 12px; }
.calc-row { display: flex; justify-content: space-between; gap: 18px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.calc-row:last-child { border-bottom: 0; }
.calc-row.highlight { font-size: 18px; color: var(--green-dark); font-weight: 800; }
.alert { padding: 12px 14px; border-radius: 12px; margin: 12px 0; font-weight: 700; }
.alert.success { background: #e4f7ea; color: #12662d; }
.alert.error { background: #fde8e6; color: var(--red); }
.login-body { min-height: 100vh; display: grid; place-items: center; padding: 20px; background: linear-gradient(135deg, #eaf5ed, #f8fbf9); }
.login-card { width: min(420px, 100%); background: white; border: 1px solid var(--line); border-radius: 20px; padding: 28px; box-shadow: 0 16px 40px rgba(31, 42, 36, .12); }
.login-card h1 { margin-top: 0; }
.login-card form { display: grid; gap: 12px; }
@media (max-width: 900px) {
    .cards, .mini-grid, .kas-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 620px) {
    .topbar { align-items: flex-start; flex-direction: column; padding: 18px; }
    .wrap { padding: 14px; }
    .cards, .mini-grid, .kas-form { grid-template-columns: 1fr; }
    .card strong { font-size: 24px; }
    .tab { flex: 1 1 auto; justify-content: center; }
}