/* ============================================================
   CSVtoEXCELコンバーターこぶし — style.css
   ============================================================ */

/* ── リセット ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── デザイントークン ── */
:root {
  --bg:           #FDF4EA;
  --surface:      #FFFFFF;
  --surface2:     #F5EAD8;
  --border:       rgba(73,167,206,0.15);
  --border2:      rgba(73,167,206,0.30);
  --text:         #2C2C2C;
  --muted:        #7A7A7A;
  --accent:       #49A7CE;
  --accent-dark:  #3388AD;
  --accent-light: rgba(73,167,206,0.10);
  --accent-glow:  rgba(73,167,206,0.20);
  --success:      #2DA870;
  --warning:      #D48A10;
  --danger:       #D64545;
  --success-bg:   rgba(45,168,112,0.09);
  --warning-bg:   rgba(212,138,16,0.09);
  --danger-bg:    rgba(214,69,69,0.09);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

/* ── ベース ── */
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 400;
  min-height: 100vh;
  line-height: 1.7;
}

/* ============================================================
   ヘッダー
   ============================================================ */
header {
  background: var(--surface);
  border-bottom: 1px solid var(--border2);
  padding: 0 2rem;
}

.header-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 1.2rem 0;
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-link {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.logo-img {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  display: block;
}

.logo-text {
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.logo-text small {
  display: block;
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--muted);
  font-family: 'Noto Sans JP', sans-serif;
  letter-spacing: 0;
}

.header-free-badge {
  background: var(--accent);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  padding: 0.28rem 0.75rem;
  border-radius: 999px;
  white-space: nowrap;
  font-family: 'Noto Sans JP', sans-serif;
}

.header-usage-count {
  margin-left: auto;
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--muted);
  font-family: 'Noto Sans JP', sans-serif;
  white-space: nowrap;
}

.header-usage-count strong {
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  color: var(--accent-dark);
}

/* ============================================================
   ヒーロー
   ============================================================ */
.hero {
  background: linear-gradient(135deg, #FDF4EA 0%, #FEF1DA 50%, #FDF4EA 100%);
  border-bottom: 2px solid rgba(73,167,206,0.15);
  padding: 2.8rem 2rem 0;
  overflow: hidden;
}

.hero-inner {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  align-items: flex-end;
  gap: 1rem;
}

.hero-text {
  flex: 1;
  padding-bottom: 2.5rem;
}

.hero h1 {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 0.9rem;
}

.hero h1 em {
  font-style: normal;
  color: var(--accent);
}

.hero-lead {
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.8;
  max-width: 480px;
  margin-bottom: 1.4rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hero-badge {
  display: flex;
  align-items: center;
  gap: 5px;
  background: #fff;
  border: 1px solid var(--border2);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  color: var(--text);
  font-weight: 500;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #AAAAAA;
  flex-shrink: 0;
  display: inline-block;
}

.hero-chara {
  flex-shrink: 0;
  width: 300px;
  height: 300px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  overflow: hidden;
}

.hero-chara img {
  width: 300px;
  height: 300px;
  object-fit: contain;
  object-position: bottom;
  display: block;
}

/* ============================================================
   変換ツール本体
   ============================================================ */
.tool-section {
  max-width: 860px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
}

.tool-heading {
  font-family: 'Outfit', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tool-heading::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 1.1em;
  background: var(--accent);
  border-radius: 2px;
  flex-shrink: 0;
}

/* 入力カード */
.input-card {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius-lg);
  padding: 2rem 2.25rem;
  box-shadow: 0 2px 16px rgba(73,167,206,0.07);
}

.input-card h2 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.3rem;
  letter-spacing: -0.01em;
}

.input-card .sub {
  color: var(--muted);
  font-size: 0.875rem;
  margin-bottom: 1.75rem;
}

.field-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.45rem;
}

/* ドロップゾーン */
.dropzone {
  border: 2px dashed var(--border2);
  border-radius: var(--radius-md);
  background: var(--bg);
  transition: background 0.2s, border-color 0.2s;
  cursor: pointer;
  margin-bottom: 1.5rem;
}

.dropzone.dragover {
  background: var(--accent-light);
  border-color: var(--accent);
}

.dropzone-inner {
  text-align: center;
  padding: 2.5rem 1.5rem;
}

.dropzone-icon { margin-bottom: 1rem; }

.dropzone-main {
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.dropzone-sub {
  font-size: 0.84rem;
  color: var(--muted);
  margin-bottom: 0.85rem;
}

.btn-upload-label {
  display: inline-block;
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 0.88rem;
  color: #fff;
  background: var(--accent);
  border-radius: var(--radius-sm);
  padding: 0.55rem 1.4rem;
  cursor: pointer;
  transition: background 0.15s;
  margin-bottom: 1rem;
}

.btn-upload-label:hover { background: var(--accent-dark); }

.dropzone-formats {
  font-size: 0.78rem;
  color: var(--muted);
}

/* ローディング */
.loading-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 0.85rem;
}

.loading-spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2.5px solid var(--border2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
  flex-shrink: 0;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
}

/* 出力形式選択 */
.format-wrap {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.25rem;
}

.format-options {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.format-option {
  flex: 1;
  min-width: 180px;
  cursor: pointer;
}

.format-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.format-option-box {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 1rem 1.1rem;
  border: 2px solid var(--border2);
  border-radius: var(--radius-md);
  background: var(--surface);
  transition: border-color 0.18s, background 0.18s, box-shadow 0.18s;
}

.format-option input[type="radio"]:checked + .format-option-box {
  border-color: var(--accent);
  background: var(--accent-light);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.format-option-icon { font-size: 1.3rem; margin-bottom: 2px; }

.format-option-name {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text);
}

.format-option-ext {
  font-family: 'Outfit', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-dark);
  letter-spacing: 0.02em;
}

.format-option-desc {
  font-size: 0.75rem;
  color: var(--muted);
  font-weight: 300;
  line-height: 1.5;
}

/* 上限エラー */
.limit-error {
  margin-top: 1rem;
  background: var(--danger-bg);
  border: 1px solid rgba(214,69,69,0.25);
  border-radius: var(--radius-sm);
  padding: 0.8rem 1.1rem;
  color: var(--danger);
  font-size: 0.875rem;
  line-height: 1.6;
}

/* ============================================================
   結果エリア
   ============================================================ */
#results {
  margin-top: 2rem;
}

.results-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.results-header h3 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}

.btn-add-more {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-dark);
  background: var(--accent-light);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  padding: 0.45rem 1rem;
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.btn-add-more:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* サマリーカード */
.score-bar-wrap {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 2px 12px rgba(73,167,206,0.06);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
}

.summary-item { text-align: center; }

.summary-label {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 0.3rem;
  letter-spacing: 0.02em;
}

.summary-value {
  display: block;
  font-family: 'Outfit', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
}

.summary-value.ok   { color: var(--success); }
.summary-value.warn { color: var(--warning); }

/* まとめてDL・リセット行 */
.bulk-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.btn-run {
  padding: 0.9rem 1.5rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  letter-spacing: 0.03em;
  transition: background 0.15s, transform 0.1s;
}

.btn-run:hover  { background: var(--accent-dark); }
.btn-run:active { transform: scale(0.99); }
.btn-run:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-bulk {
  display: inline-flex;
  align-items: center;
}

.btn-reset {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.84rem;
  font-weight: 400;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  padding: 0.55rem 1rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.btn-reset:hover {
  color: var(--danger);
  border-color: var(--danger);
}

/* ファイルリスト */
#fileList {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.file-item {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  animation: fadeIn 0.25s ease;
  box-shadow: 0 1px 8px rgba(73,167,206,0.05);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: translateY(0); }
}

.file-thumb-wrap { flex-shrink: 0; }

/* CSVファイル用のサムネイル代替 */
.file-thumb-csv {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--accent-light);
  border: 1px solid var(--border2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 0.72rem;
  color: var(--accent-dark);
  letter-spacing: 0.05em;
}

.file-info {
  flex: 1;
  min-width: 0;
}

.file-name {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 2px;
}

.file-meta {
  font-size: 0.8rem;
  color: var(--muted);
}

.file-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.file-ratio {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 0.88rem;
  min-width: 48px;
  text-align: center;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.file-ratio.ok         { color: var(--success); }
.file-ratio.error      { color: var(--danger); }
.file-ratio.processing { color: var(--muted); font-size: 0.78rem; font-weight: 400; }

/* ファイル行内スピナー */
.file-spinner {
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 2px solid var(--border2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
  flex-shrink: 0;
}

.btn-dl-single {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent-dark);
  background: var(--accent-light);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.85rem;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}

.btn-dl-single:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-remove {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.75rem;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s;
}

.btn-remove:hover {
  color: var(--danger);
  border-color: var(--danger);
}

/* ============================================================
   コンテンツセクション（できること・使用例）
   ============================================================ */
.content-section {
  max-width: 860px;
  margin: 0 auto;
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
}

.section-heading {
  font-family: 'Outfit', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-heading::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 1.2em;
  background: var(--accent);
  border-radius: 2px;
  flex-shrink: 0;
}

.section-lead {
  color: var(--muted);
  font-size: 0.875rem;
  margin-bottom: 1.75rem;
}

/* できることグリッド */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.35rem;
  transition: box-shadow 0.15s;
}

.feature-card:hover {
  box-shadow: 0 4px 16px rgba(73,167,206,0.10);
}

.feature-icon {
  font-size: 1.5rem;
  margin-bottom: 0.6rem;
}

.feature-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.4rem;
}

.feature-desc {
  font-size: 0.83rem;
  color: var(--muted);
  line-height: 1.65;
}

/* 使用例リスト */
.usecase-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.usecase-item {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.35rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.usecase-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  font-family: 'Outfit', sans-serif;
  margin-top: 1px;
}

.usecase-body strong {
  display: block;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.3rem;
}

.usecase-body p {
  font-size: 0.84rem;
  color: var(--muted);
  line-height: 1.65;
  margin: 0;
}

/* ============================================================
   開発コストテーブル
   ============================================================ */
.cost-table-wrap {
  overflow-x: auto;
}

.cost-table {
  width: 100%;
  max-width: 480px;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.cost-table th,
.cost-table td {
  padding: 0.7rem 1.1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.cost-table th {
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--muted);
  background: var(--surface2);
  text-transform: uppercase;
}

.cost-table td:nth-child(2),
.cost-table td:nth-child(3) { text-align: right; }

.cost-table th:nth-child(2),
.cost-table th:nth-child(3) { text-align: right; }

.cost-table-total td {
  font-weight: 600;
  color: var(--text);
  background: var(--accent-light);
  border-top: 2px solid var(--border2);
  border-bottom: none;
}

/* ============================================================
   レスポンシブ
   ============================================================ */
@media (max-width: 600px) {
  .hero h1      { font-size: 1.4rem; }
  .hero-chara   { display: none; }
  .features-grid { grid-template-columns: 1fr; }
  .summary-grid  { grid-template-columns: 1fr 1fr; }
  .file-item     { flex-wrap: wrap; }
  .bulk-row      { flex-direction: column; align-items: stretch; }
  .btn-run       { text-align: center; }
  .format-options { flex-direction: column; }
  .format-option  { min-width: unset; }
  .header-usage-count { display: none; }
}

@media (max-width: 400px) {
  .summary-grid { grid-template-columns: 1fr; }
}