.alert-box {
  margin: 24px 0; padding: 16px 20px; border-radius: 16px;
  background: var(--bg-elevated, #ffffff); color: var(--text-primary, #1e293b);
  border: 1px solid var(--border-light, #e7e5e4);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
.alert-box h2 { margin: 0 0 4px; font-size: 17px; font-weight: 700; letter-spacing: -0.01em; }
.alert-box p { margin: 0 0 12px; font-size: 14px; line-height: 20px; color: var(--text-secondary, #334155); }
.alert-row { display: flex; gap: 8px; flex-wrap: wrap; }
.alert-row input[type="email"], .alert-row input[type="text"] {
  flex: 1 1 200px; min-width: 0; height: 44px; padding: 0 12px; border-radius: 10px; font: inherit; font-size: 15px;
  color: var(--text-primary, #1e293b); background: var(--bg-primary, #f5f5f4); border: 1px solid var(--border-medium, #d6d3d1);
}
.alert-row input[type="text"] { flex: 0 1 110px; text-transform: uppercase; }
.alert-row button {
  height: 44px; padding: 0 16px; border: 0; border-radius: 10px; font: inherit; font-size: 15px; font-weight: 700; cursor: pointer;
  background: var(--text-primary, #1e293b); color: var(--bg-primary, #f5f5f4);
}
.alert-row button:disabled { opacity: 0.6; cursor: default; }
.alert-digest { display: flex; align-items: center; gap: 6px; margin-top: 10px; font-size: 13px; color: var(--text-secondary, #334155); }
.alert-status { margin: 10px 0 0; font-size: 14px; font-weight: 600; min-height: 1em; }
.alert-status[data-tone="error"] { color: var(--color-error, #b91c1c); }
.alert-box :focus-visible { outline: 2px solid var(--color-accent, #047857); outline-offset: 2px; }
.alert-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .alert-box { background: #162032; color: #f1f5f9; border-color: #263247; }
  :root:not([data-theme]) .alert-box p, :root:not([data-theme]) .alert-digest { color: #cbd5e1; }
  :root:not([data-theme]) .alert-row input { background: #0b1120; color: #f1f5f9; border-color: #334155; }
  :root:not([data-theme]) .alert-row button { background: #f1f5f9; color: #0b1120; }
}