/* Japanese Kana & Romaji Converter (OpenAI) */
.jkr-container { max-width: 840px; margin: 24px auto; padding: 0 16px; font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji"; }
.jkr-header { text-align: center; margin-bottom: 16px; }
.jkr-header h2 { margin: 0; font-size: 1.75rem; }
.jkr-header p { color: #6b7280; margin: 6px 0 0; }

.jkr-card { background: #fff; border: 1px solid #e5e7eb; border-radius: 16px; padding: 16px; box-shadow: 0 8px 24px rgba(0,0,0,0.06); }
.jkr-label { display: block; font-weight: 600; margin-bottom: 8px; }
.jkr-label-small { font-size: .9rem; color: #374151; display:block; margin-bottom: 6px; }
.jkr-textarea { width: 100%; min-height: 140px; border: 1px solid #e5e7eb; border-radius: 12px; padding: 12px; font-size: 1rem; line-height: 1.6; outline: none; }
.jkr-textarea:focus { border-color: #6366f1; box-shadow: 0 0 0 4px rgba(99,102,241,.12); }

.jkr-toolbar { display: flex; gap: 12px; align-items: flex-end; margin-top: 12px; flex-wrap: wrap; }
.jkr-select-wrap { flex: 1 1 240px; min-width: 240px; }
.jkr-select { width: 100%; border: 1px solid #e5e7eb; border-radius: 12px; padding: 10px 12px; font-size: 1rem; background: #fff; }

.jkr-actions { display:flex; gap: 8px; margin-left: auto; }
.jkr-btn { border: 1px solid #e5e7eb; background: #fff; padding: 10px 14px; border-radius: 999px; cursor: pointer; font-weight: 600; }
.jkr-btn:hover { transform: translateY(-1px); box-shadow: 0 8px 18px rgba(0,0,0,.06); }
.jkr-btn-primary { background: linear-gradient(135deg, #6366f1, #8b5cf6); color:#fff; border: none; }
.jkr-btn-ghost { background: #fff; }
.jkr-btn-copy { background:#f3f4f6; }

.jkr-status { display:flex; align-items:center; gap:10px; min-height: 24px; margin-top: 10px; color:#374151; font-size: .95rem; }
.jkr-spinner { width: 16px; height:16px; border-radius:50%; border:2px solid #d1d5db; border-top-color:#6366f1; animation: jkr-spin 1s linear infinite; display:inline-block; }
@keyframes jkr-spin { to { transform: rotate(360deg);} }

.jkr-output-card { margin-top: 12px; border: 1px solid #e5e7eb; border-radius: 12px; }
.jkr-output-header { display:flex; justify-content: space-between; align-items:center; padding: 10px 12px; background: #f9fafb; border-bottom: 1px solid #e5e7eb; border-top-left-radius: 12px; border-top-right-radius: 12px; }
.jkr-output { padding: 12px; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; white-space: pre-wrap; word-wrap: break-word; }

.jkr-hint { margin-top: 10px; color:#6b7280; font-size:.9rem; }

/* Responsive */
@media (max-width: 640px) {
  .jkr-actions { width: 100%; }
  .jkr-actions .jkr-btn { flex: 1 1 auto; }
}