/* Base64 / hex / text converter — scoped under .tool-b64. Visual rhythm
   matches the rest of the calculator family. */

.tool-b64 {
  --tool-gap: 1rem;
  --tool-radius: var(--radius-sm, 6px);
  max-width: 720px;
}

.tool-b64 .tool-form {
  display: flex;
  flex-direction: column;
  gap: var(--tool-gap);
}

.tool-b64 .tool-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.tool-b64 .tool-field-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tool-b64 .tool-field-label {
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tool-b64 .tool-field-hint {
  font-size: 0.78rem;
  font-weight: 400;
  opacity: 0.6;
  font-family: var(--font-sans, system-ui, sans-serif);
}

.tool-b64 .tool-field-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tool-b64 .tool-toggle {
  font-size: 0.78rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  user-select: none;
  opacity: 0.78;
  font-family: var(--font-sans, system-ui, sans-serif);
}
.tool-b64 .tool-toggle input {
  width: 14px; height: 14px;
  accent-color: var(--accent, currentColor);
  margin: 0;
}

.tool-b64 .tool-copy {
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--border, currentColor);
  border-radius: 999px;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font-family: var(--font-sans, system-ui, sans-serif);
  transition: border-color 120ms ease-out, color 120ms ease-out;
}
.tool-b64 .tool-copy:hover {
  border-color: var(--accent, currentColor);
  color: var(--accent-link, currentColor);
}

.tool-b64 .tool-form textarea {
  font: inherit;
  font-family: var(--font-mono, ui-monospace, SFMono-Regular, Menlo, monospace);
  font-size: 0.9rem;
  line-height: 1.5;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--border, currentColor);
  border-radius: var(--tool-radius);
  background: var(--bg, transparent);
  color: inherit;
  width: 100%;
  box-sizing: border-box;
  resize: vertical;
  min-height: 80px;
  overflow-wrap: anywhere;
}

.tool-b64 .tool-form textarea:focus-visible {
  outline: 2px solid var(--accent, currentColor);
  outline-offset: 1px;
}

.tool-b64 .tool-error {
  font-size: 0.82rem;
  color: var(--error, #c0392b);
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--error, #c0392b);
  border-radius: var(--tool-radius);
  background: rgba(239, 68, 68, 0.10);
  margin: 0;
  font-family: var(--font-sans, system-ui, sans-serif);
}
.tool-b64 .tool-error[hidden] { display: none; }

.tool-b64 .tool-status {
  font-size: 0.78rem;
  opacity: 0.55;
  font-family: var(--font-mono, ui-monospace, SFMono-Regular, Menlo, monospace);
  margin: 0;
  text-align: right;
}

.tool-b64 .tool-examples {
  margin: 0;
  font-size: 0.82rem;
  opacity: 0.7;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}
.tool-b64 .tool-examples-label {
  font-family: var(--font-sans, system-ui, sans-serif);
  margin-right: 0.2rem;
}
.tool-b64 .tool-example {
  font-family: var(--font-mono, ui-monospace, SFMono-Regular, Menlo, monospace);
  font-size: 0.75rem;
  padding: 0.18rem 0.5rem;
  border: 1px solid var(--border, currentColor);
  border-radius: 999px;
  background: var(--bg-elevated, transparent);
  color: inherit;
  cursor: pointer;
  transition: border-color 120ms ease-out, color 120ms ease-out;
}
.tool-b64 .tool-example:hover {
  border-color: var(--accent, currentColor);
  color: var(--accent-link, currentColor);
}