:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --text: #1f2430;
  --muted: #6b7280;
  --border: #e2e4e9;
  --primary: #205a3e;
  --primary-hover: #164229;
  --danger: #b3261e;
  --ok-bg: #e4f3ea;
  --ok-text: #1c6b3f;
  --off-bg: #eee;
  --off-text: #6b7280;
  --warn-bg: #fff4dd;
  --warn-text: #8a5a00;
  --error-bg: #fdecea;
  --error-text: #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);
  font-size: 15px;
  line-height: 1.5;
}

a { color: var(--primary); }

.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
}
.topbar .brand { font-weight: 700; text-decoration: none; color: var(--text); }
.topbar nav { display: flex; gap: 16px; flex: 1; }
.topbar nav a { text-decoration: none; color: var(--text); font-weight: 500; }
.topbar nav a:hover { color: var(--primary); }
.logout-form { display: flex; align-items: center; gap: 8px; }
.username { color: var(--muted); font-size: 13px; }

.container { max-width: 960px; margin: 0 auto; padding: 24px; }

h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 17px; margin: 28px 0 10px; }
h3 { font-size: 15px; margin: 20px 0 8px; }

.page-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.page-head .actions { display: flex; gap: 8px; }

.muted { color: var(--muted); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 16px;
}

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 16px; }
.stat-value { font-size: 26px; font-weight: 700; }
.stat-label { color: var(--muted); font-size: 13px; margin-top: 2px; }
.stat-sub { color: var(--muted); font-size: 12px; margin-top: 4px; }

.quick-links { display: flex; gap: 10px; flex-wrap: wrap; }

.button, button, input[type="submit"] {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}
.button:hover, button:hover { background: var(--primary-hover); }
.button.secondary, button.secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}
.button.secondary:hover { background: var(--bg); }

.link-button {
  background: none;
  border: none;
  color: var(--primary);
  padding: 0;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.link-button.danger { color: var(--danger); }
.inline-form { display: inline-block; margin-right: 8px; }
.inline-controls { display: flex; gap: 12px; align-items: end; margin-bottom: 16px; }

label {
  display: block;
  margin-bottom: 14px;
  font-weight: 600;
  font-size: 13px;
  color: var(--text);
}
input[type="text"], input[type="password"], input[type="number"], input[type="date"], select {
  display: block;
  width: 100%;
  max-width: 420px;
  margin-top: 5px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 400;
  background: var(--surface);
  color: var(--text);
}

form { max-width: 520px; }
form.form-wide { max-width: none; }

.data-table { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.data-table th, .data-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 14px; }
.data-table th { background: var(--bg); font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; color: var(--muted); }
.data-table tr:last-child td { border-bottom: none; }

.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge-ok { background: var(--ok-bg); color: var(--ok-text); }
.badge-off { background: var(--off-bg); color: var(--off-text); }
.badge-pending { background: var(--warn-bg); color: var(--warn-text); }
.badge-approved { background: var(--ok-bg); color: var(--ok-text); }
.badge-rejected { background: var(--error-bg); color: var(--error-text); }
.badge-cancelled { background: var(--off-bg); color: var(--off-text); }

.alert { padding: 10px 14px; border-radius: 6px; margin-bottom: 14px; list-style-position: inside; }
.alert.error { background: var(--error-bg); color: var(--error-text); }
.alert.warn { background: var(--warn-bg); color: var(--warn-text); }
.alert.ok { background: var(--ok-bg); color: var(--ok-text); }

.filter-tabs { display: flex; gap: 14px; margin-bottom: 14px; }
.filter-tabs a { text-decoration: none; color: var(--muted); font-weight: 600; font-size: 13px; padding-bottom: 4px; }
.filter-tabs a.active { color: var(--primary); border-bottom: 2px solid var(--primary); }

.detail-grid { display: grid; grid-template-columns: 160px 1fr; row-gap: 8px; margin: 0; }
.detail-grid dt { color: var(--muted); font-size: 13px; }
.detail-grid dd { margin: 0; }

.auth-card {
  max-width: 360px;
  margin: 60px auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
}