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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.container {
  width: 100%;
  max-width: 500px;
}

.card {
  background: white;
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

h1 {
  font-size: 28px;
  color: #1a1a2e;
  margin-bottom: 8px;
}

h2 {
  font-size: 18px;
  color: #1a1a2e;
  margin-bottom: 8px;
}

.subtitle {
  color: #666;
  margin-bottom: 32px;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.user-email {
  color: #888;
  font-size: 14px;
  margin-top: 4px;
}

.error {
  background: #fee2e2;
  color: #dc2626;
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 24px;
  font-size: 14px;
}

.steps {
  margin-bottom: 32px;
}

.step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  color: #444;
}

.step-number {
  width: 28px;
  height: 28px;
  background: #667eea;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: #1a1a2e;
  color: white;
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  width: 100%;
}

.btn:hover {
  background: #2d2d44;
  transform: translateY(-1px);
}

.btn:disabled {
  background: #ccc;
  cursor: not-allowed;
  transform: none;
}

.btn-small {
  background: #f3f4f6;
  color: #666;
  padding: 8px 16px;
  border-radius: 6px;
  text-decoration: none;
  font-size: 14px;
  transition: background 0.2s;
}

.btn-small:hover {
  background: #e5e7eb;
}

.btn-secondary {
  background: transparent;
  color: #667eea;
  border: 1px solid #667eea;
  padding: 10px 20px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s;
  margin-top: 12px;
}

.btn-secondary:hover {
  background: #f0f0ff;
}

.btn-icon {
  background: #f3f4f6;
  border: none;
  padding: 10px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.btn-icon:hover {
  background: #e5e7eb;
}

.section {
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid #eee;
}

.section:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.hint {
  color: #888;
  font-size: 14px;
  margin-bottom: 16px;
}

.select-wrapper {
  margin-bottom: 12px;
}

select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 16px;
  background: white;
  cursor: pointer;
}

select:disabled {
  background: #f5f5f5;
  cursor: not-allowed;
}

.webhook-url {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.webhook-url input {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 14px;
  font-family: monospace;
  background: #f9fafb;
}

.status {
  font-size: 14px;
  min-height: 20px;
  margin-top: 8px;
}

.status.success {
  color: #16a34a;
}

.status.error {
  color: #dc2626;
}

.warning {
  color: #d97706;
  font-size: 12px;
  margin-top: 8px;
}

.instructions {
  padding-left: 20px;
  color: #666;
}

.instructions li {
  padding: 6px 0;
}

.instructions ul {
  margin-top: 8px;
  padding-left: 20px;
}

.instructions a {
  color: #667eea;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: #444;
  margin-bottom: 6px;
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 14px;
}

.form-group input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
}

.tab {
  flex: 1;
  padding: 12px;
  border: 1px solid #ddd;
  background: #f9fafb;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.tab:hover {
  background: #f3f4f6;
}

.tab.active {
  background: #667eea;
  color: white;
  border-color: #667eea;
}

.tab-content {
  display: none;
}

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

footer {
  text-align: center;
  margin-top: 24px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}