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

:root {
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --success: #10b981;
  --error: #ef4444;
  --bg: #0f172a;
  --surface: #1e293b;
  --border: #334155;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.container {
  width: 100%;
  max-width: 400px;
}

header {
  text-align: center;
  margin-bottom: 2rem;
}

header h1 {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), #a855f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tab {
  flex: 1;
  padding: 0.75rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.2s;
}

.tab:hover {
  border-color: var(--primary);
  color: var(--text);
}

.tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.form {
  display: none;
  background: var(--surface);
  padding: 1.5rem;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.form.active {
  display: block;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.form-group input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

.btn {
  width: 100%;
  padding: 0.875rem 1rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  margin-top: 0.5rem;
}

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

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

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

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

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

.btn-outline {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--text-muted);
  color: var(--text);
}

.message {
  margin-top: 1rem;
  padding: 0.75rem;
  border-radius: 8px;
  font-size: 0.875rem;
  display: none;
}

.message.show {
  display: block;
}

.message.success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--success);
  color: var(--success);
}

.message.error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--error);
  color: var(--error);
}

.success-view {
  display: none;
  background: var(--surface);
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  text-align: center;
}

.success-view.active {
  display: block;
}

.success-icon {
  width: 64px;
  height: 64px;
  background: var(--success);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 1rem;
}

.success-view h2 {
  margin-bottom: 0.5rem;
}

.tier-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--primary);
  border-radius: 99px;
  font-size: 0.75rem;
  text-transform: uppercase;
  margin: 0.5rem 0;
}

.token-info {
  margin: 1.5rem 0;
  padding: 1rem;
  background: var(--bg);
  border-radius: 8px;
}

.token-info p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.token-info code {
  display: block;
  padding: 0.5rem;
  background: var(--surface);
  border-radius: 4px;
  font-size: 0.75rem;
  word-break: break-all;
  margin-bottom: 0.5rem;
  max-height: 100px;
  overflow: auto;
}

.hint {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 1rem 0;
}

.hint code {
  background: var(--bg);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

footer {
  text-align: center;
  margin-top: 2rem;
  color: var(--text-muted);
  font-size: 0.875rem;
}

footer a {
  color: var(--primary);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* Hide elements */
.hidden {
  display: none !important;
}