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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  color: #333;
}

.screen {
  min-height: 100vh;
  padding: 20px;
}

.hidden {
  display: none !important;
}

/* Login Screen */
.login-container {
  max-width: 400px;
  margin: 100px auto;
  background: white;
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.login-container h1 {
  text-align: center;
  margin-bottom: 30px;
  color: #667eea;
}

/* Main App */
header {
  background: white;
  padding: 20px;
  border-radius: 12px;
  margin-bottom: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 {
  color: #667eea;
  font-size: 24px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 15px;
}

#user-info {
  color: #666;
  font-size: 14px;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.tab-btn {
  padding: 12px 24px;
  background: white;
  border: none;
  border-radius: 8px 8px 0 0;
  cursor: pointer;
  font-size: 16px;
  color: #666;
  transition: all 0.2s;
}

.tab-btn:hover {
  background: #f5f5f5;
}

.tab-btn.active {
  background: white;
  color: #667eea;
  font-weight: 600;
  border-bottom: 3px solid #667eea;
}

.tab-content {
  background: white;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: #333;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #667eea;
}

.form-group textarea {
  resize: vertical;
  min-height: 150px;
}

/* Buttons */
.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: #667eea;
  color: white;
}

.btn-primary:hover {
  background: #5568d3;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
  background: #e0e0e0;
  color: #333;
}

.btn-secondary:hover {
  background: #d0d0d0;
}

.btn-small {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-danger {
  background: #e74c3c;
  color: white;
}

.btn-danger:hover {
  background: #c0392b;
}

/* Toolbar */
.toolbar {
  margin-bottom: 20px;
}

/* Prompts List */
.prompts-list {
  display: grid;
  gap: 20px;
}

.prompt-card {
  background: #f8f9fa;
  padding: 20px;
  border-radius: 8px;
  border-left: 4px solid #667eea;
  transition: transform 0.2s, box-shadow 0.2s;
}

.prompt-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.prompt-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: 15px;
}

.prompt-title {
  font-size: 18px;
  font-weight: 600;
  color: #333;
  margin-bottom: 5px;
}

.prompt-actions {
  display: flex;
  gap: 10px;
}

.prompt-text {
  color: #666;
  margin-bottom: 15px;
  white-space: pre-wrap;
  max-height: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.prompt-url {
  background: white;
  padding: 10px;
  border-radius: 6px;
  font-size: 12px;
  color: #667eea;
  word-break: break-all;
  display: flex;
  align-items: center;
  gap: 10px;
}

.prompt-url input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 12px;
  color: #667eea;
}

.prompt-meta {
  font-size: 12px;
  color: #999;
  margin-top: 10px;
}

/* Users List */
.users-list {
  display: grid;
  gap: 15px;
}

.user-card {
  background: #f8f9fa;
  padding: 15px;
  border-radius: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 15px;
}

.user-badge {
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.user-badge.admin {
  background: #667eea;
  color: white;
}

.user-badge.user {
  background: #e0e0e0;
  color: #666;
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  background: white;
  border-radius: 12px;
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  border-bottom: 1px solid #e0e0e0;
}

.modal-header h2 {
  color: #667eea;
}

.modal-close {
  background: none;
  border: none;
  font-size: 28px;
  color: #999;
  cursor: pointer;
  line-height: 1;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.modal form {
  padding: 20px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 20px;
}

.url-display {
  margin: 20px 0;
}

.url-box {
  display: flex;
  gap: 10px;
  align-items: center;
}

.url-box input {
  flex: 1;
  background: #f8f9fa;
  border: 2px solid #e0e0e0;
  padding: 10px;
  border-radius: 6px;
  font-size: 12px;
  color: #667eea;
}

/* Error Messages */
.error-message {
  color: #e74c3c;
  font-size: 14px;
  margin-top: 10px;
  display: none;
}

.error-message.show {
  display: block;
}

/* Admin Section */
.admin-section {
  margin-bottom: 40px;
}

.admin-section h2 {
  color: #667eea;
  margin-bottom: 20px;
  font-size: 20px;
}