:root {
  --blue: #1c4e80;
  --blue-dark: #123a5e;
  --bg: #f4f6f8;
  --border: #d9dfe4;
  --text: #222;
  --green: #1e7e34;
  --red: #b3261e;
}
* { box-sizing: border-box; }
body { margin:0; font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar { display:flex; align-items:center; justify-content:space-between; background:var(--blue); color:#fff; padding: 12px 24px; flex-wrap: wrap; gap: 8px; }
.topbar .brand { color:#fff; font-weight:700; font-size:1.1rem; }
.topbar nav a, .topbar .user-box a { color:#fff; margin-left: 16px; }
.user-box { font-size: 0.9rem; }

.container { max-width: 1100px; margin: 24px auto; padding: 0 16px 48px; }

.card { background:#fff; border:1px solid var(--border); border-radius:8px; padding:20px; margin-bottom:20px; }

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

table { width:100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align:left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { background:#eef2f5; font-weight:600; }
tr:hover td { background:#fafcfe; }
.num { text-align:right; font-variant-numeric: tabular-nums; }

.btn { display:inline-block; background:var(--blue); color:#fff; border:none; padding:8px 16px; border-radius:6px; cursor:pointer; font-size:0.92rem; }
.btn:hover { background:var(--blue-dark); text-decoration:none; }
.btn.secondary { background:#6c757d; }
.btn.danger { background:var(--red); }
.btn.small { padding:4px 10px; font-size:0.82rem; }

form.inline { display:inline; }

.form-grid { display:grid; grid-template-columns: 1fr 1fr; gap:14px 20px; }
.form-grid.narrow { grid-template-columns: 1fr; max-width: 420px; }
.form-grid label { display:block; font-size:0.85rem; font-weight:600; margin-bottom:4px; }
.form-grid input, .form-grid select, .form-grid textarea {
  width:100%; padding:8px 10px; border:1px solid var(--border); border-radius:5px; font-size:0.95rem;
}
.form-actions { margin-top:16px; grid-column: 1 / -1; display:flex; gap:10px; }

.flash { padding:10px 16px; border-radius:6px; margin-bottom:16px; font-size:0.9rem; }
.flash.success { background:#e6f4ea; color:var(--green); border:1px solid #b7dfc3; }
.flash.error { background:#fbeaea; color:var(--red); border:1px solid #f0c4c1; }

.stat-row { display:flex; gap:16px; flex-wrap:wrap; margin-bottom: 20px; }
.stat { background:#fff; border:1px solid var(--border); border-radius:8px; padding:14px 20px; min-width:160px; }
.stat .label { font-size:0.78rem; color:#666; text-transform:uppercase; letter-spacing:.03em; }
.stat .value { font-size:1.3rem; font-weight:700; margin-top:4px; }

.toolbar { display:flex; gap:10px; flex-wrap:wrap; align-items:end; margin-bottom:16px; }
.toolbar .field label { display:block; font-size:0.8rem; font-weight:600; margin-bottom:3px; }
.toolbar select, .toolbar input { padding:7px 9px; border:1px solid var(--border); border-radius:5px; }

.badge { display:inline-block; padding:2px 8px; border-radius:10px; font-size:0.75rem; font-weight:600; }
.badge.sale { background:#e6f4ea; color:var(--green); }
.badge.purchase { background:#eef2fb; color:#2b4faa; }
.badge.warn { background:#fff4e0; color:#a86500; }

.login-wrap { display:flex; align-items:center; justify-content:center; min-height:90vh; }
.login-card { background:#fff; border:1px solid var(--border); border-radius:10px; padding:32px; width:340px; }
.login-card h1 { text-align:center; font-size:1.2rem; }

.text-muted { color:#777; font-size:0.85rem; }
.validation-issues { background:#fff8e6; border:1px solid #f2d98a; border-radius:6px; padding:12px 16px; margin-bottom:16px; }
.validation-issues.ok { background:#e6f4ea; border-color:#b7dfc3; }
.validation-issues ul { margin:6px 0 0; padding-left:20px; }