:root {
    --bg: #f4f6f8;
    --card: #ffffff;
    --text: #1f2933;
    --muted: #6b7280;
    --border: #d9e2ec;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --danger-bg: #fef2f2;
    --danger-text: #b91c1c;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.45;
}

.topbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 20px;
    background: #111827;
    color: #fff;
}

.topbar__brand {
    font-weight: 700;
    font-size: 1.05rem;
}

.topbar__nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.topbar__nav a {
    color: #e5e7eb;
    text-decoration: none;
    padding: 6px 10px;
    border-radius: 6px;
}

.topbar__nav a:hover,
.topbar__nav a.is-active {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

.page {
    max-width: 1400px;
    margin: 0 auto;
    padding: 16px;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 16px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.card-narrow {
    max-width: 420px;
    margin: 40px auto;
}

h1, h2 {
    margin: 0 0 12px;
    font-size: 1.2rem;
}

.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: end;
}

.filters label,
.form__label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.9rem;
}

input[type="text"],
input[type="password"],
input[type="date"],
select {
    min-width: 160px;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.95rem;
}

.btn {
    border: none;
    border-radius: 6px;
    padding: 9px 14px;
    cursor: pointer;
    font-size: 0.95rem;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.alert {
    padding: 10px 12px;
    border-radius: 8px;
    margin-bottom: 12px;
}

.alert-error {
    background: var(--danger-bg);
    color: var(--danger-text);
    border: 1px solid #fecaca;
}

.table-wrap {
    overflow-x: auto;
}

.table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table.report.report--sticky-first {
    border-collapse: separate;
    border-spacing: 0;
}

table.report.report--sticky-first th:first-child,
table.report.report--sticky-first td:first-child {
    position: sticky;
    left: 0;
    z-index: 1;
    min-width: 88px;
    max-width: 140px;
    white-space: normal;
    background: #fff;
    box-shadow: 2px 0 5px rgba(15, 23, 42, 0.08);
}

table.report.report--sticky-first th:first-child {
    z-index: 3;
    background: #f8fafc;
}

table.report.report--sticky-first tr.row-total td:first-child {
    background: #f8fafc;
}

table.report {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
}

table.report th,
table.report td {
    border-bottom: 1px solid var(--border);
    padding: 8px 10px;
    text-align: left;
    white-space: nowrap;
}

table.report th {
    background: #f8fafc;
    position: sticky;
    top: 0;
    z-index: 1;
}

table.report td.num,
table.report th.num {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

table.report tr.row-total td {
    font-weight: 700;
    background: #f8fafc;
}

.muted {
    color: var(--muted);
    text-align: center;
}

@media (max-width: 640px) {
    .page {
        padding: 10px;
    }

    .card {
        padding: 12px;
    }
}