:root {
  --color-bg-primary: #0a0e27;
  --color-bg-secondary: #1a1f3a;
  --color-bg-tertiary: #2a2f4a;
  --color-text: #e0e0e0;
  --color-text-muted: #6c757d;
  --color-border: #3a3f5a;
  --color-primary: hsl(217, 91%, 60%);
  --color-success: hsl(135, 55%, 56%);
  --color-warning: hsl(32, 100%, 65%);
  --color-danger: hsl(0, 100%, 71%);
  --color-info: hsl(208, 100%, 57%);
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 3rem;
  --radius: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Helvetica Neue, Arial, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background: var(--color-bg-primary);
  color: var(--color-text);
  line-height: 1.5;
  margin: 0;
  padding: 0;
  min-height: 100vh;
}

h1, h2, h3, h4 {
  margin: 0 0 var(--spacing-sm);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-text);
}

h1 {
  font-size: 1.75rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.25rem;
}

h4 {
  font-size: 1.1rem;
}

p {
  margin: 0 0 var(--spacing-md);
}

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

.hub-container {
  max-width: 560px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form-input,
input[type=email],
input[type=text] {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-family: inherit;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.form-input:focus,
input[type=email]:focus,
input[type=text]:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(60, 131, 246, 0.25);
}
.form-input::placeholder,
input[type=email]::placeholder,
input[type=text]::placeholder {
  color: var(--color-text-muted);
}

.account-fields {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.account-field label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}
.account-field .account-value {
  font-size: 0.95rem;
  color: var(--color-text);
}

.copyable-code {
  position: relative;
  cursor: pointer;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.15s ease;
}
.copyable-code:hover {
  border-color: var(--color-primary);
}
.copyable-code:hover .copy-hint {
  opacity: 1;
}
.copyable-code code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.8rem;
  color: var(--color-text);
  word-break: break-all;
  line-height: 1.6;
}
.copyable-code .copy-hint {
  display: block;
  font-size: 0.7rem;
  color: var(--color-primary);
  margin-top: var(--spacing-xs);
  opacity: 0;
  transition: opacity 0.15s ease;
}

.purchases-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.purchase-item {
  padding: var(--spacing-md);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.purchase-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xs);
}

.purchase-amount {
  font-weight: 600;
  color: var(--color-text);
}

.purchase-details {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.purchase-tx {
  margin-top: var(--spacing-xs);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  word-break: break-all;
}

.mt-md {
  margin-top: var(--spacing-md);
}

.text-muted {
  color: var(--color-text-muted);
}

.text-sm {
  font-size: 0.875rem;
}

.text-xs {
  font-size: 0.75rem;
}

.monospace {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}