body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--tg-theme-bg-color, #f6f8fb);
  color: var(--tg-theme-text-color, #0f172a);
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 24px 18px 48px;
}

.hero {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 18px;
}

.brand-dot {
  width: 12px;
  height: 12px;
  background: var(--tg-theme-button-color, #2563eb);
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(37, 99, 235, 0.12);
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  color: #6b7280;
}

h1 {
  margin: 4px 0 6px;
  font-size: 28px;
}

.subtitle {
  margin: 0;
  color: #475569;
}

.card {
  background: #ffffff;
  border-radius: 16px;
  padding: 18px 16px;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
}

form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field span {
  font-weight: 600;
  color: #111827;
}

input {
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 16px;
  background: #f8fafc;
  color: #0f172a;
  transition: border-color 0.15s ease, background 0.15s ease;
}

input:focus {
  outline: none;
  border-color: var(--tg-theme-button-color, #2563eb);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.hint {
  margin: 6px 0 0;
  color: #6b7280;
  font-size: 13px;
}

#message {
  min-height: 20px;
  font-size: 14px;
}

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

#message.error {
  color: #dc2626;
}