/* cript.app — grid + flexbox only, no frameworks */
:root {
  --bg: #0d0d0d;
  --surface: #1a1a1a;
  --border: #2a2a2a;
  --text: #f5f5f5;
  --muted: #888;
  --accent: #f2c94c;
  --radius: 12px;
  --font: system-ui, sans-serif;
}

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Page layout: grid (header, main, footer) */
.app {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
  max-width: 420px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  gap: 0.75rem;
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  flex-shrink: 0;
  object-fit: cover;
}

.logo {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
  flex: 1;
  min-width: 0;
}

.hidden {
  display: none !important;
}

.qr-wrap {
  margin-top: 1rem;
  padding: 1rem;
  background: var(--bg);
  border-radius: 8px;
  border: 1px solid var(--border);
  text-align: center;
}

.qr-wrap:not(.hidden) #qrContainer {
  display: inline-block;
}

.level-badge {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  background: var(--surface);
  padding: 0.35rem 0.6rem;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.main {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.alpha-warning {
  margin: 0;
  padding: 0.6rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-align: center;
  color: #1a0a0a;
  background: #e53935;
  border-radius: 8px;
  border: 1px solid #c62828;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 0 0 0.5rem 0;
}

.balance {
  font-size: 1.75rem;
  font-weight: 600;
  margin: 0;
  color: var(--accent);
}

.balance-sub {
  font-size: 0.875rem;
  color: var(--muted);
  margin: 0.25rem 0 0 0;
}

.address-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.address {
  flex: 1;
  min-width: 0;
  font-size: 0.8rem;
  word-break: break-all;
  background: var(--bg);
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-icon {
  flex-shrink: 0;
  background: var(--border);
  color: var(--text);
  border: none;
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  font-size: 0.875rem;
  cursor: pointer;
}

.btn-icon:hover {
  background: #3a3a3a;
}

.hint {
  font-size: 0.8rem;
  color: var(--muted);
  margin: 0.75rem 0 0 0;
}

.level-0-notice {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0;
}

.send-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.send-form .field-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.send-form .field-wrap label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.input-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.input-row .input {
  flex: 1;
  min-width: 0;
}

.input {
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.75rem;
}

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

.input:focus {
  outline: none;
  border-color: var(--accent);
}

.btn-primary {
  font: inherit;
  font-weight: 600;
  color: var(--bg);
  background: var(--accent);
  border: none;
  border-radius: 8px;
  padding: 0.75rem 1rem;
  cursor: pointer;
  margin-top: 0.25rem;
}

.btn-primary:hover:not(:disabled) {
  filter: brightness(1.1);
}

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

.btn-secondary {
  font: inherit;
  font-weight: 500;
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 0.6rem 1rem;
  cursor: pointer;
  margin-top: 0.75rem;
  width: 100%;
}

.btn-secondary:hover {
  background: rgba(242, 201, 76, 0.1);
}

.send-card .hint {
  margin-top: 0.5rem;
}

.footer {
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted);
}

.footer p {
  margin: 0;
}

@media (min-width: 480px) {
  .app {
    padding: 1.5rem;
  }
}