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

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: #1a1a2e;
  color: #e0e0e0;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

.card {
  background: #16213e;
  border-radius: 16px;
  padding: 2.5rem 2rem;
  max-width: 420px;
  width: 100%;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.logo {
  font-size: 3.5rem;
  margin-bottom: 0.5rem;
}

h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.5rem;
}

.subtitle {
  font-size: 0.95rem;
  color: #9ca3af;
  margin-bottom: 2rem;
  line-height: 1.5;
}

/* ---- Buttons ---- */

.btn-primary,
.btn-secondary {
  display: block;
  width: 100%;
  padding: 1rem;
  border-radius: 10px;
  font-size: 1.1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  margin: 1rem 0;
  text-decoration: none;
  transition: background 0.2s, transform 0.1s;
}

.btn-primary {
  background: #0f3460;
  color: #ffffff;
}

.btn-primary:hover {
  background: #e94560;
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: transparent;
  color: #9ca3af;
  border: 1px solid #374151;
}

.btn-secondary:hover {
  background: #374151;
  color: #ffffff;
}

.hint {
  font-size: 0.8rem;
  color: #6b7280;
  margin-top: -0.5rem;
}

/* ---- Spinner ---- */

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid #374151;
  border-top-color: #e94560;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 1rem auto;
}

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

/* ---- Status icons ---- */

.icon-success {
  font-size: 4rem;
  color: #22c55e;
  margin: 0.5rem 0;
}

.icon-error {
  font-size: 4rem;
  color: #ef4444;
  margin: 0.5rem 0;
}

h2 {
  font-size: 1.3rem;
  color: #ffffff;
  margin: 0.5rem 0;
}

/* ---- Instructions ---- */

.instructions {
  text-align: left;
  background: #0f3460;
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin-top: 1.5rem;
}

.instructions h3 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #9ca3af;
  margin-bottom: 0.75rem;
}

.instructions ol {
  padding-left: 1.25rem;
}

.instructions li {
  font-size: 0.9rem;
  line-height: 1.6;
  color: #d1d5db;
}

.instructions li + li {
  margin-top: 0.4rem;
}

#error-message {
  color: #fca5a5;
  margin: 0.5rem 0 1rem;
  font-size: 0.95rem;
}