:root {
  color-scheme: light dark;
  --bg: #f6f7f9;
  --surface: #ffffff;
  --border: #dde1e6;
  --text: #1b1f24;
  --text-muted: #5b6570;
  --accent: #2f5fd7;
  --accent-contrast: #ffffff;
  --danger: #c62828;
  --danger-bg: #fdecea;
  --success: #1e7e34;
  --success-bg: #eaf7ec;
  --radius: 6px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

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

.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 10px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  text-decoration: none;
  color: var(--text);
}
.brand-logo { height: 24px; width: auto; }

.nav { display: flex; gap: 16px; flex: 1; flex-wrap: wrap; }
.nav a { text-decoration: none; color: var(--text-muted); padding: 6px 2px; border-bottom: 2px solid transparent; }
.nav a.active, .nav a:hover { color: var(--text); border-bottom-color: var(--accent); }

.subnav { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 20px; border-bottom: 1px solid var(--border); padding-bottom: 10px; }
.subnav a { text-decoration: none; color: var(--text-muted); font-size: 0.9rem; }
.subnav a.active { color: var(--accent); font-weight: 600; }

.row-form { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row-form select, .row-form input { padding: 5px 6px; }

.account { display: flex; align-items: center; gap: 10px; }
.account .user small { color: var(--text-muted); }

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

.content { max-width: 960px; margin: 0 auto; padding: 24px 20px 60px; }

h1 { font-size: 1.5rem; margin: 0 0 16px; }
h2 { font-size: 1.15rem; margin: 28px 0 12px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 14px;
}

.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  background: #eef1f6;
  color: var(--text-muted);
}
.badge-in_progress { background: #fff4d6; color: #8a6100; }
.badge-awaiting_approval { background: #e6ecff; color: #2f4fb0; }
.badge-completed { background: var(--success-bg); color: var(--success); }
.badge-rejected, .badge-failed { background: var(--danger-bg); color: var(--danger); }
.badge-cancelled { background: #eee; color: #666; }

table { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th { background: #fafbfc; font-size: 0.8rem; text-transform: uppercase; color: var(--text-muted); }
tr:last-child td { border-bottom: none; }

form.stacked-form { display: flex; flex-direction: column; gap: 14px; }
form.inline-form { display: inline; }

label { display: flex; flex-direction: column; gap: 4px; font-size: 0.85rem; color: var(--text-muted); }
input, select, textarea, button {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
}
textarea { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 0.85rem; }

button.primary, a.primary, input[type="submit"] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
button.danger { background: var(--danger); border-color: var(--danger); color: #fff; cursor: pointer; }
button.secondary, a.button-secondary { background: var(--surface); cursor: pointer; text-decoration: none; color: var(--text); display: inline-block; }

.alert { padding: 10px 12px; border-radius: var(--radius); margin: 0 0 14px; }
.alert-error { background: var(--danger-bg); color: var(--danger); }
.alert-success { background: var(--success-bg); color: var(--success); }

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

.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.auth-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; width: 100%; max-width: 380px; text-align: center; }
.auth-card h1 { margin-top: 0; }
.auth-logo { height: 48px; margin-bottom: 8px; }
.auth-card label { text-align: left; }
.secondary-action { display: block; margin-top: 16px; }

.empty-state { color: var(--text-muted); padding: 30px 0; text-align: center; }

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1d2025;
    --border: #2c3138;
    --text: #e7e9ec;
    --text-muted: #9aa3ad;
    --accent: #5b84e6;
    --accent-contrast: #0d1117;
    --danger-bg: #3a1f1f;
    --success-bg: #1c2f22;
  }
  th { background: #22262c; }
}