:root {
  --bg: #f6f8fc;
  --surface: #ffffff;
  --text: #1c2433;
  --muted: #5d687c;
  --primary: #3559e0;
  --primary-hover: #2547c3;
  --border: #dbe2f0;
  --radius: 14px;
  --shadow: 0 8px 20px rgba(38, 55, 110, 0.08);
  --success: #1f8f53;
  --warning-bg: #fff9e8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 16px 14px 28px;
}

.page-header {
  margin-bottom: 14px;
}

h1 {
  font-size: 1.35rem;
  margin: 0 0 6px;
}

.page-header p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px;
  margin-bottom: 14px;
}

h2 {
  margin: 2px 0 12px;
  font-size: 1.05rem;
}

.form-grid {
  display: grid;
  gap: 10px;
}

.project-bar {
  display: grid;
  gap: 10px;
}

.project-actions {
  display: grid;
  gap: 10px;
}

@media (min-width: 640px) {
  .project-actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

label {
  display: grid;
  gap: 6px;
}

label span {
  font-size: 0.88rem;
  font-weight: 600;
}

.help-text {
  color: var(--muted);
  font-size: 0.78rem;
}

input,
textarea,
select,
button {
  font: inherit;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 11px;
  background: #fff;
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus,
button:focus-visible {
  outline: 2px solid #93a8ff;
  outline-offset: 1px;
}

.primary-btn {
  margin-top: 4px;
  border: none;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  padding: 12px;
  font-weight: 700;
}

.primary-btn:hover {
  background: var(--primary-hover);
}

.primary-btn:disabled {
  opacity: 0.7;
}

.output-block + .output-block {
  margin-top: 16px;
}

.output-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

h3 {
  font-size: 0.95rem;
  margin: 0;
}

.copy-btn {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 11px;
  background: #fff;
  color: var(--text);
  font-size: 0.8rem;
}

.copy-btn:hover {
  background: #f1f5ff;
}

.output-text {
  margin: 0;
  white-space: pre-wrap;
  background: #f9fbff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  min-height: 84px;
  font-size: 0.88rem;
}

.status-text {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.88rem;
}

.generated-image {
  display: block;
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  background: linear-gradient(180deg, #fff, #f6f8fc);
}

@media (min-width: 768px) {
  .container {
    padding-top: 26px;
  }

  .card {
    padding: 18px;
  }

  h1 {
    font-size: 1.65rem;
  }
}
/* ローディングスピナー */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Claude出力のMarkdown整形 */
.claude-result {
  background: #f9fbff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  font-size: 0.88rem;
  line-height: 1.7;
}
.claude-result h2 {
  font-size: 1rem;
  color: var(--primary);
  border-bottom: 1px solid var(--border);
  padding-bottom: 4px;
  margin: 16px 0 8px;
}
.claude-result h2:first-child {
  margin-top: 0;
}
.claude-result h3 {
  font-size: 0.92rem;
  margin: 12px 0 4px;
}
.claude-result p {
  margin: 4px 0;
}
.claude-result blockquote {
  border-left: 3px solid var(--primary);
  margin: 6px 0;
  padding: 4px 10px;
  color: var(--muted);
  background: #f1f5ff;
  border-radius: 0 6px 6px 0;
}
.claude-result hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 12px 0;
}
/* コードブロックのはみ出し防止 */
.claude-result pre {
  white-space: pre-wrap;
  word-break: break-all;
  background: #f1f5ff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  font-size: 0.82rem;
  overflow-x: auto;
}
/* テーブル */
.md-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin: 8px 0;
}
.md-table th,
.md-table td {
  border: 1px solid var(--border);
  padding: 6px 10px;
  text-align: left;
}
.md-table th {
  background: #f1f5ff;
  font-weight: 600;
}

/* 4コマ漫画データカード */
.manga-cards-grid {
  display: grid;
  gap: 12px;
  margin-top: 8px;
}

@media (min-width: 640px) {
  .manga-cards-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.manga-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
}

.manga-card-header {
  background: var(--primary);
  color: #fff;
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.manga-panel-num {
  font-size: 0.75rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  padding: 2px 8px;
  white-space: nowrap;
}

.manga-panel-title {
  font-size: 0.88rem;
  font-weight: 700;
}

.manga-card-body {
  margin: 0;
  padding: 10px 12px;
  display: grid;
  gap: 4px;
  font-size: 0.85rem;
}

.manga-card-body dt {
  font-weight: 600;
  color: var(--muted);
  font-size: 0.75rem;
  margin-top: 6px;
}

.manga-card-body dt:first-child {
  margin-top: 0;
}

.manga-card-body dd {
  margin: 0;
  line-height: 1.6;
}

.manga-dialogue {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.manga-dialogue-item {
  background: #f1f5ff;
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 0.82rem;
}

.manga-prompt-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.manga-prompt-row span {
  flex: 1;
  font-size: 0.8rem;
  color: var(--muted);
  word-break: break-all;
  line-height: 1.5;
}

.manga-copy-btn {
  flex-shrink: 0;
  margin-top: 1px;
}

/* 共通キャラクタープロンプト */
.manga-common-char {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #f1f5ff;
  padding: 10px 12px;
  margin-bottom: 12px;
}

.manga-common-char-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.manga-common-char-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
}

.manga-common-char-text {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
  word-break: break-all;
  line-height: 1.6;
}

/* 4コマ画像生成エリア */
#mangaImagesContainer {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 12px;
}

.manga-image-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
}

.manga-image-label {
  background: var(--primary);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 6px 12px;
}

.manga-image-item img {
  display: block;
  width: 100%;
  height: auto;
}

.manga-image-error {
  border-color: #e57373;
}

.manga-image-error p {
  color: #c62828;
  font-size: 0.85rem;
  padding: 10px 12px;
  margin: 0;
}

/* 手動アップロードセクション */
.upload-grid {
  display: grid;
  gap: 10px;
  margin-top: 8px;
}

@media (min-width: 500px) {
  .upload-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.upload-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  overflow: hidden;
}

.upload-item label {
  display: block;
  padding: 10px 12px;
  background: #f1f5ff;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
}

.upload-item label span {
  display: block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.upload-item label input[type="file"] {
  font-size: 0.78rem;
  width: 100%;
}

.upload-preview {
  padding: 8px;
  background: #f9fbff;
}

.upload-preview img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.upload-status {
  margin: 10px 0 0;
  font-size: 0.85rem;
  color: var(--success);
  font-weight: 600;
}