* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #f0f2f5;
  min-height: 100vh;
}

.admin-container {
  display: flex;
  min-height: 100vh;
}

.admin-nav {
  width: 240px;
  background: #001529;
  color: #fff;
  padding: 20px 0;
}

.admin-nav h1 {
  font-size: 18px;
  padding: 0 20px;
  margin-bottom: 30px;
}

.admin-nav ul {
  list-style: none;
}

.admin-nav li {
  padding: 12px 20px;
  cursor: pointer;
  transition: background 0.2s;
}

.admin-nav li:hover {
  background: rgba(255,255,255,0.1);
}

.admin-nav li.active {
  background: #1890ff;
}

.admin-content {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.tab-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.count-badge {
  background: #1890ff;
  color: #fff;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 14px;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.skill-card {
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.2s;
}

.skill-card:hover {
  transform: translateY(-2px);
}

.skill-card h3 {
  margin-bottom: 8px;
  color: #333;
}

.skill-card p {
  color: #666;
  font-size: 13px;
  margin-bottom: 12px;
  line-height: 1.4;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: #333;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #d9d9d9;
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #1890ff;
}

.radio-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.radio-group label {
  font-weight: normal;
  cursor: pointer;
}

.hint {
  color: #888;
  font-size: 13px;
  margin-bottom: 12px;
}

.btn-primary {
  padding: 10px 24px;
  background: #1890ff;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-primary:hover {
  background: #40a9ff;
}

.btn-secondary {
  padding: 8px 16px;
  background: #f5f5f5;
  color: #333;
  border: 1px solid #d9d9d9;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
}

.btn-secondary:hover {
  background: #e8e8e8;
}

.btn-danger {
  padding: 8px 16px;
  background: #ff4d4f;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
}

.btn-danger:hover {
  background: #ff7875;
}

.progress-panel {
  margin-top: 20px;
  padding: 20px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.progress-bar {
  height: 8px;
  background: #f0f0f0;
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 12px;
}

.progress-fill {
  height: 100%;
  background: #1890ff;
  width: 0%;
  transition: width 0.3s;
}

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  background: #fff;
  padding: 24px;
  border-radius: 8px;
  max-width: 800px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 24px;
  cursor: pointer;
  color: #999;
}

.modal-close:hover {
  color: #333;
}

.modal-actions {
  margin-top: 20px;
  display: flex;
  justify-content: flex-end;
}

pre {
  background: #f5f5f5;
  padding: 16px;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.loading {
  text-align: center;
  padding: 40px;
  color: #999;
}

.error {
  text-align: center;
  padding: 20px;
  color: #ff4d4f;
  background: #fff1f0;
  border-radius: 8px;
}