:root {
  --primary: #0B3D91;
  --primary-light: #1a5bb8;
  --success: #198754;
  --warning: #ffc107;
  --danger: #dc3545;
  --gray: #6c757d;
  --light: #f8f9fa;
  --white: #fff;
  --shadow: 0 2px 8px rgba(0,0,0,0.1);
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: #212529;
  background: var(--light);
  min-height: 100vh;
  -webkit-tap-highlight-color: transparent;
}

#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 0 16px 24px;
}

.header {
  text-align: center;
  padding: 24px 0 16px;
}

.header h1 {
  margin: 0;
  font-size: 1.5rem;
  color: var(--primary);
}

.subtitle {
  margin: 4px 0 0;
  font-size: 0.9rem;
  color: var(--gray);
}

.main {
  flex: 1;
  max-width: 400px;
  margin: 0 auto;
  width: 100%;
}

.screen {
  animation: fade 0.2s ease;
}

@keyframes fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 20px;
}

.card h2 {
  margin: 0 0 8px;
  font-size: 1.25rem;
}

.hint {
  font-size: 0.85rem;
  color: var(--gray);
  margin: 0 0 16px;
}

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

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 4px;
  font-size: 0.9rem;
}

.form-group input {
  width: 100%;
  padding: 12px 14px;
  font-size: 16px;
  border: 1px solid #dee2e6;
  border-radius: 8px;
  -webkit-appearance: none;
  appearance: none;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(11, 61, 145, 0.15);
}

.error {
  color: var(--danger);
  font-size: 0.9rem;
  margin-bottom: 12px;
  padding: 8px;
  background: #f8d7da;
  border-radius: 6px;
}

.success {
  color: #0f5132;
  font-size: 0.9rem;
  margin-bottom: 12px;
  padding: 8px;
  background: #d1e7dd;
  border-radius: 6px;
}

.btn {
  display: inline-block;
  width: 100%;
  padding: 14px 20px;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
  -webkit-appearance: none;
  appearance: none;
}

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

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

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

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

.btn-success:hover:not(:disabled) {
  background: #157347;
}

.btn-warning {
  background: var(--warning);
  color: #212529;
}

.btn-warning:hover:not(:disabled) {
  background: #e0a800;
}

.btn-large {
  padding: 18px 24px;
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.btn-link {
  background: none;
  color: var(--gray);
  font-weight: normal;
  margin-top: 16px;
}

.btn-link:hover {
  color: var(--primary);
  text-decoration: underline;
}

.user-info {
  text-align: center;
  padding: 8px 0 16px;
  font-size: 0.9rem;
  color: var(--gray);
}

.status-card {
  text-align: center;
  margin-bottom: 24px;
}

.status-message {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 4px;
}

.status-detail {
  font-size: 0.9rem;
  color: var(--gray);
}

.actions {
  margin-bottom: 16px;
}

.footer {
  text-align: center;
  padding: 24px 0;
  font-size: 0.8rem;
  color: var(--gray);
}

.footer p {
  margin: 0;
}