* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 15px;
  background: #f5f5f5;
  color: #333;
  line-height: 1.5;
}
.container { max-width: 100%; margin: 0 auto; padding: 20px; }
h1 { margin-bottom: 15px; }
h2 { margin: 15px 0 8px; font-size: 16px; }

.nav { margin-bottom: 15px; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

.btn {
  display: inline-block;
  padding: 7px 14px;
  background: #555;
  color: #fff;
  text-decoration: none;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
}
.btn:hover { opacity: 0.85; }
.btn-green { background: #2a7d2a; }
.btn-blue { background: #0066cc; }
.btn-danger { background: #c0392b; }
.btn-sm { padding: 3px 10px; font-size: 13px; }
.btn-logout { background: #666; }

.input {
  padding: 8px 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 14px;
  width: 100%;
  max-width: 300px;
}
.input-sm { max-width: 120px; }
.input-xs { max-width: 80px; }

#subject-select { max-width: 220px; }

.search-bar { margin-bottom: 15px; }

.filter-extras {
  margin-bottom: 12px;
  padding: 8px 12px;
  background: #fafafa;
  border: 1px solid #e0e0e0;
  border-radius: 4px;
}
.filter-extras .form-row {
  margin-bottom: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.filter-extras .form-row label {
  min-width: auto;
  font-weight: 500;
  font-size: 13px;
  margin-right: 2px;
}
.filter-extras .form-row label:not(:first-child) {
  margin-left: 10px;
}

.filter-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.filter-label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: 4px;
  background: #eee;
  transition: background 0.2s;
}
.filter-label:hover { background: #ddd; }
.filter-gia { color: #0066cc; }
.filter-gve { color: #666; }
.filter-nodata { color: #c0392b; }

table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 4px; overflow: hidden; }
table th, table td { padding: 8px 10px; text-align: left; border-bottom: 1px solid #eee; }
table th { background: #eee; font-weight: 600; }
table tr:hover { background: #fafafa; }

.row-warning { background: #ffe6e6 !important; }
.row-warning:hover { background: #ffd6d6 !important; }

.banner-warning {
  background: #fff3cd;
  border: 1px solid #ffc107;
  color: #856404;
  padding: 10px 15px;
  border-radius: 6px;
  margin-bottom: 12px;
  font-size: 14px;
  font-weight: 500;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 11px;
  font-weight: 600;
}
.badge-gia { background: #d4edff; color: #0056b3; }
.badge-gve { background: #eee; color: #555; }

.card {
  background: #fff;
  padding: 15px 20px;
  border-radius: 6px;
  margin-bottom: 15px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.form-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.form-row label { min-width: 180px; font-weight: 500; }

.checkbox-label {
  display: block;
  margin: 3px 0;
  cursor: pointer;
}

.msg { font-size: 13px; margin-left: 10px; }
.msg-ok { color: #2a7d2a; }
.msg-err { color: #c0392b; }

.toolbar { margin-top: 15px; }

ol { padding-left: 20px; }
ol li { margin: 4px 0; }

.user-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: #666;
}

.decl-input {
  max-width: 180px;
  font-size: 13px;
  padding: 4px 6px;
}
.decl-input:disabled {
  background: #f0f0f0;
  color: #999;
  cursor: not-allowed;
}
.decl-cb {
  width: 18px;
  height: 18px;
  cursor: pointer;
}