:root {
  --primary: #1a5276;
  --primary-dark: #123a52;
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #223;
  --border: #e1e5ea;
  --green: #1e8449;
  --yellow: #b8860b;
  --orange: #c0651a;
  --red: #b03a2e;
  --gray: #7f8c8d;
}

* { box-sizing: border-box; }

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

.navbar {
  background: var(--primary);
  color: #fff;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar a { color: #fff; text-decoration: none; font-weight: 500; }
.navbar .brand { font-size: 18px; font-weight: 700; }
.navbar .nav-links { display: flex; gap: 20px; align-items: center; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 30px 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  margin-bottom: 20px;
}

h1, h2, h3 { color: var(--primary-dark); }

table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
th { background: #f0f3f5; color: #555; }

.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 6px;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
}
.btn:hover { background: var(--primary-dark); }
.btn-secondary { background: #6c7a89; }
.btn-danger { background: var(--red); }
.btn-sm { padding: 6px 12px; font-size: 13px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 14px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
}
.badge-green { background: var(--green); }
.badge-yellow { background: var(--yellow); }
.badge-orange { background: var(--orange); }
.badge-red { background: var(--red); }
.badge-gray { background: var(--gray); }

.alert {
  padding: 12px 16px;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 14px;
}
.alert-error { background: #fdecea; color: var(--red); border: 1px solid #f5c6cb; }
.alert-success { background: #eafaf1; color: var(--green); border: 1px solid #b7e4c7; }

.progress-bar {
  background: #e1e5ea;
  border-radius: 20px;
  overflow: hidden;
  height: 18px;
  width: 100%;
}
.progress-fill {
  height: 100%;
  background: var(--green);
  color: #fff;
  font-size: 11px;
  text-align: center;
  line-height: 18px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  text-align: center;
}
.stat-box .num { font-size: 28px; font-weight: 700; color: var(--primary); }
.stat-box .label { font-size: 13px; color: #666; }

.login-wrap {
  max-width: 400px;
  margin: 60px auto;
}

footer {
  text-align: center;
  padding: 20px;
  color: #999;
  font-size: 13px;
}