:root {
  --bg: #f4f3ef;
  --surface: #ffffff;
  --border: #e0ddd6;
  --accent: #1a6b4a;
  --accent-light: #e8f4ee;
  --accent-hover: #155c3e;
  --danger: #c0392b;
  --danger-light: #fdf0ee;
  --text: #1a1a18;
  --text-sub: #6b6b65;
  --text-hint: #9e9e96;
  --radius: 8px;
  --radius-lg: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
}

/* ===== ヘッダー ===== */
.app-header {
  background: var(--accent);
  color: white;
  padding: 0 24px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.app-header h1 { font-size: 15px; font-weight: 500; letter-spacing: 0.05em; }
.header-sub { font-size: 11px; opacity: 0.7; }

/* ===== レイアウト ===== */
.app-body {
  max-width: 860px;
  margin: 0 auto;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ===== カード ===== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.card-header {
  padding: 12px 16px;
  background: #fafaf8;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-header-icon {
  width: 24px;
  height: 24px;
  background: var(--accent-light);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
}

.card-header-title { font-size: 13px; font-weight: 500; }
.card-body { padding: 16px; }

/* ===== フォーム ===== */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field.full { grid-column: 1 / -1; }

label { font-size: 12px; font-weight: 700; color: var(--text); letter-spacing: 0.04em; }

input[type="text"], input[type="email"], textarea, select {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 10px;
  font-size: 13px;
  font-family: inherit;
  color: var(--text);
  background: white;
  transition: border-color 0.15s;
  width: 100%;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(26,107,74,0.08);
}

textarea {
  resize: vertical;
  min-height: 72px;
  font-size: 12px;
  line-height: 1.7;
}

/* ===== 貼り付けエリア ===== */
.paste-area textarea { background: #fafaf8; border-style: dashed; }
.paste-area textarea:focus { background: white; border-style: solid; }
.paste-hint { font-size: 11px; color: var(--text-hint); margin-top: 4px; }

/* 解析結果 */
.parsed-result {
  display: none;
  margin-top: 10px;
  background: var(--accent-light);
  border: 1px solid #b8dfc9;
  border-radius: var(--radius);
  padding: 10px 12px;
  gap: 8px;
  flex-direction: column;
}
.parsed-result.show { display: flex; }
.parsed-row { display: grid; grid-template-columns: 60px 1fr; gap: 8px; align-items: center; font-size: 12px; }
.parsed-label { color: var(--accent); font-weight: 500; font-size: 11px; }
.parsed-value { border: 1px solid #b8dfc9; border-radius: 6px; padding: 4px 8px; background: white; font-size: 12px; }

/* ===== 提案タブ ===== */
.proposal-tabs { display: flex; gap: 6px; margin-bottom: 14px; }
.tab-btn {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: white;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-sub);
  cursor: pointer;
  transition: all 0.15s;
}
.tab-btn.active { background: var(--accent); color: white; border-color: var(--accent); }
.tab-btn:hover:not(.active) { border-color: var(--accent); color: var(--accent); }
.proposal-panel { display: none; }
.proposal-panel.active { display: flex; flex-direction: column; gap: 12px; }

/* ===== オプション ===== */
.options-list { display: flex; flex-direction: column; gap: 6px; }
.option-row {
  display: grid;
  grid-template-columns: 1fr 100px 32px;
  gap: 8px;
  align-items: center;
  background: #fafaf8;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 8px;
  animation: fadeIn 0.2s ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}
.option-name { font-size: 12px; }
.option-price { font-size: 12px; color: var(--text-sub); text-align: right; font-variant-numeric: tabular-nums; }
.btn-remove {
  width: 28px; height: 28px; border: none; background: none;
  color: var(--text-hint); cursor: pointer; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; transition: all 0.15s;
}
.btn-remove:hover { background: var(--danger-light); color: var(--danger); }
.option-add-row { display: grid; grid-template-columns: 1fr 120px; gap: 8px; margin-top: 4px; }

/* ===== 割引 ===== */
.discount-row {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; background: #fff9f8;
  border: 1px solid #f0d5d0; border-radius: var(--radius);
}
.discount-row label { color: var(--danger); margin: 0; min-width: fit-content; }

/* ===== 小計 ===== */
.subtotal-display {
  background: #fafaf8; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 10px 12px;
  display: flex; flex-direction: column; gap: 4px;
}
.subtotal-row { display: flex; justify-content: space-between; font-size: 12px; color: var(--text-sub); }
.subtotal-row.total { font-size: 15px; font-weight: 500; color: var(--text); border-top: 1px solid var(--border); padding-top: 6px; margin-top: 2px; }
.subtotal-row.discount-line { color: var(--danger); }

/* ===== ボタン ===== */
.btn-primary {
  background: var(--accent); color: white; border: none;
  border-radius: var(--radius); padding: 12px 24px;
  font-size: 14px; font-weight: 500; cursor: pointer;
  width: 100%; transition: background 0.15s; letter-spacing: 0.03em;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary {
  background: white; color: var(--text); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 8px 16px;
  font-size: 13px; cursor: pointer; transition: all 0.15s;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.action-area { display: flex; flex-direction: column; gap: 10px; }

/* ===== 結果 ===== */
.result-card { display: none; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.result-card.show { display: block; }
.result-tabs { display: flex; border-bottom: 1px solid var(--border); }
.result-tab {
  padding: 10px 20px; font-size: 13px; font-weight: 500;
  cursor: pointer; border-bottom: 2px solid transparent;
  color: var(--text-sub); transition: all 0.15s;
}
.result-tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.result-content { padding: 16px; }
.result-panel { display: none; }
.result-panel.active { display: block; }
.mail-preview {
  background: #fafaf8; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px;
  font-size: 13px; line-height: 1.9;
  white-space: pre-wrap;
}
.result-actions { display: flex; gap: 8px; margin-top: 12px; justify-content: flex-end; }

.check-grid { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.check-section-label { width: 100%; font-size: 12px; font-weight: bold; color: var(--text-sub); }
.check-item { display: flex; align-items: center; gap: 6px; font-size: 13px; cursor: pointer; }
.check-item input[type="checkbox"] { accent-color: var(--accent); width: 15px; height: 15px; }

/* ===== メインタブ ===== */
.main-tabs {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 0;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 16px;
}
.main-tab-btn {
  padding: 12px 24px;
  border: none;
  border-bottom: 3px solid transparent;
  background: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-sub);
  cursor: pointer;
  transition: all 0.15s;
}
.main-tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.main-tab-btn:hover:not(.active) { color: var(--text); }

/* ===== 確定エリア ===== */
.confirm-area {
  border-top: 1px solid var(--border);
  padding: 16px;
  background: #f8fff9;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.confirm-note { font-size: 12px; color: var(--text-sub); flex: 1; min-width: 200px; }
.btn-confirm {
  background: #155c3e; color: white; border: none;
  border-radius: var(--radius); padding: 10px 20px;
  font-size: 13px; font-weight: 500; cursor: pointer;
  transition: background 0.15s; white-space: nowrap;
}
.btn-confirm:hover { background: #0f4530; }

/* ===== 履歴テーブル ===== */
.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.history-table th {
  background: #fafaf8;
  border-bottom: 2px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  font-weight: 500;
  color: var(--text-sub);
  font-size: 12px;
}
.history-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.history-table tbody tr:hover td { background: #fafaf8; }
.history-detail td { background: var(--accent-light) !important; padding: 12px 16px; }
.btn-sm { padding: 4px 12px; font-size: 12px; }

/* ===== 履歴提案詳細 ===== */
.history-proposal {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 6px 0;
  border-bottom: 1px dashed #b8dfc9;
  flex-wrap: wrap;
}
.history-proposal:last-child { border-bottom: none; }
.proposal-label {
  background: var(--accent);
  color: white;
  font-size: 11px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 10px;
  white-space: nowrap;
}
.proposal-total { margin-left: auto; font-weight: 500; color: var(--accent); white-space: nowrap; }
.proposal-opts { width: 100%; font-size: 11px; color: var(--text-sub); padding-left: 4px; }