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

:root {
  --primary: #0084ff;
  --primary-dark: #006bd6;
  --success: #22c55e;
  --error: #ef4444;
  --warning: #f59e0b;
  --bg: #f0f2f5;
  --card: #ffffff;
  --text: #1a1a2e;
  --text-secondary: #64748b;
  --border: #e2e8f0;
  --radius: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

.container {
  max-width: 560px;
  margin: 0 auto;
  padding: 32px 20px;
}

header {
  text-align: center;
  margin-bottom: 40px;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--primary);
}

.logo h1 {
  font-size: 28px;
  font-weight: 700;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 4px;
}

.step {
  display: none;
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  border: 1px solid var(--border);
  animation: fadeIn 0.3s ease;
}

.step.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.step-number {
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
}

.step-header h2 {
  font-size: 18px;
  font-weight: 600;
}

.step-desc {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 20px;
}

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

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group select,
.form-group input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  color: var(--text);
  background: var(--card);
  transition: border-color 0.2s;
}

.form-group select:focus,
.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,132,255,0.1);
}

.form-group select:disabled {
  background: #f8fafc;
  cursor: not-allowed;
  opacity: 0.7;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  width: 100%;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-dark);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--border);
}

.selected-info {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-secondary);
  display: none;
}

.selected-info.visible {
  display: block;
}

.selected-info strong {
  color: var(--text);
  display: block;
  margin-bottom: 4px;
}

.status-box {
  text-align: center;
  padding: 24px;
}

.loader {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}

.loader.hidden {
  display: none;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.status-success {
  color: var(--success);
  font-weight: 600;
  font-size: 16px;
}

.status-error {
  color: var(--error);
  font-weight: 600;
  font-size: 16px;
}

.status-details {
  margin-top: 16px;
  text-align: left;
  font-size: 13px;
  color: var(--text-secondary);
  background: #f8fafc;
  border-radius: 8px;
  padding: 14px;
}

.status-details dt {
  font-weight: 600;
  color: var(--text);
  margin-top: 8px;
}

.status-details dt:first-child {
  margin-top: 0;
}

.status-details dd {
  margin-left: 0;
  word-break: break-all;
}

footer {
  text-align: center;
  margin-top: 40px;
  color: var(--text-secondary);
  font-size: 12px;
}