:root {
    --bg: #f5f6f8;
    --fg: #1c2530;
    --muted: #6b7785;
    --border: #dde1e6;
    --accent: #2f6fed;
    --accent-fg: #ffffff;
    --danger: #c0392b;
    --success: #1e8449;
    --warn-bg: #fff6e0;
    --warn-fg: #7a5b00;
    --reject-bg: #fde8e8;
    --reject-fg: #7a1414;
    --card-bg: #ffffff;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--fg);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
}
.topbar .brand { font-weight: 600; }
.topbar nav { display: flex; gap: 1rem; flex: 1; }
.logout-form { display: flex; align-items: center; gap: 0.5rem; }
.logout-form .user { color: var(--muted); font-size: 0.9rem; }

.link-button {
    background: none;
    border: none;
    color: var(--accent);
    cursor: pointer;
    font: inherit;
    padding: 0;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1.5rem;
}

h1 { font-size: 1.5rem; margin-top: 0; }
h2 { font-size: 1.2rem; }

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.actions { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1.5rem; }

.btn {
    display: inline-block;
    background: var(--accent);
    color: var(--accent-fg);
    border: none;
    border-radius: 6px;
    padding: 0.5rem 1rem;
    cursor: pointer;
    font: inherit;
}
.btn:hover { opacity: 0.9; text-decoration: none; }
.btn-secondary { background: var(--border); color: var(--fg); }
.btn-danger { background: var(--danger); }

table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    text-align: left;
    padding: 0.5rem 0.6rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
}
th { color: var(--muted); font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.positive { color: var(--success); }
.negative { color: var(--danger); }

.flash { padding: 0.75rem 1rem; border-radius: 6px; margin-bottom: 1rem; }
.flash-success { background: #e6f4ea; color: var(--success); }
.flash-error { background: var(--reject-bg); color: var(--reject-fg); }

.notice-warn { background: var(--warn-bg); color: var(--warn-fg); padding: 0.75rem 1rem; border-radius: 6px; margin-bottom: 1rem; }
.notice-reject { background: var(--reject-bg); color: var(--reject-fg); padding: 0.75rem 1rem; border-radius: 6px; margin-bottom: 1rem; }

form.inline { display: inline; }

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}
.field { display: flex; flex-direction: column; gap: 0.3rem; }
.field label { font-size: 0.85rem; color: var(--muted); }
.field input[type=text],
.field input[type=number],
.field input[type=date],
.field input[type=month],
.field input[type=password],
.field select,
.field textarea {
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font: inherit;
    width: 100%;
}
.field textarea { resize: vertical; }
.checkbox-field { flex-direction: row; align-items: center; gap: 0.5rem; }

.login-wrap {
    max-width: 360px;
    margin: 4rem auto;
}

.filter-bar {
    display: flex;
    gap: 1rem;
    align-items: end;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.small { font-size: 0.85rem; color: var(--muted); }

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

.month-row { cursor: pointer; }
.month-row:hover { background: var(--bg); }
.toggle-cell { width: 1.5rem; color: var(--muted); }

.month-detail-row td { background: var(--bg); padding: 0.75rem 1rem; }
.detail-table { background: var(--card-bg); border: 1px solid var(--border); border-radius: 6px; }
.detail-table th, .detail-table td { padding: 0.4rem 0.6rem; font-size: 0.9rem; }

.totals-row td { border-top: 2px solid var(--border); border-bottom: none; font-weight: 600; }
.totals-row { border-top: 2px solid var(--border); }

.truncate {
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

th a { color: var(--fg); }
th a:hover { color: var(--accent); }