/* ========================================================
   調停申立書・付属書類 自動入力＆PDF出力システム
   Modern Minimalist SaaS / Flat Architecture Design System
   ======================================================== */

:root {
  /* モダン・ニュートラル・パレット (Slate & Indigo) */
  --color-slate-900: #0f172a;
  --color-slate-800: #1e293b;
  --color-slate-700: #334155;
  --color-slate-600: #475569;
  --color-slate-500: #64748b;
  --color-slate-400: #94a3b8;
  --color-slate-300: #cbd5e1;
  --color-slate-200: #e2e8f0;
  --color-slate-100: #f1f5f9;
  --color-slate-50:  #f8fafc;

  --color-primary: #0f172a;
  --color-primary-hover: #1e293b;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-accent-light: #eff6ff;

  --color-success: #10b981;
  --color-success-bg: #ecfdf5;
  --color-warning: #f59e0b;
  --color-error: #ef4444;

  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-subtle: #f8fafc;
  --bg-desk: #cbd5e1;

  --border-subtle: #f1f5f9;
  --border-default: #e2e8f0;
  --border-focus: #2563eb;

  --text-main: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --radius-xs: 3px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-pill: 9999px;

  --shadow-none: none;
  --shadow-subtle: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-panel: 0 1px 3px 0 rgba(15, 23, 42, 0.06), 0 1px 2px -1px rgba(15, 23, 42, 0.04);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========================================================
   ヘッダー (Modern Flat Bar)
   ======================================================== */
.app-header {
  background-color: var(--color-slate-900);
  color: #ffffff;
  padding: 0.85rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1720px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: #ffffff;
}

.brand-text h1 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: #ffffff;
  margin: 0;
}

.brand-text p {
  font-size: 0.75rem;
  color: var(--color-slate-400);
  margin-top: 1px;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.header-autosave {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.75rem;
  color: var(--color-slate-300);
  background-color: rgba(255, 255, 255, 0.06);
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-pill);
}

.autosave-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-success);
}

.header-org {
  font-size: 0.8rem;
  color: var(--color-slate-300);
  font-weight: 500;
}

/* ========================================================
   レイアウト（2カラム分割）
   ======================================================== */
.main-wrapper {
  max-width: 1720px;
  margin: 0 auto;
  padding: 1rem 1.25rem 1.5rem;
  display: grid;
  grid-template-columns: minmax(460px, 560px) 1fr;
  gap: 1.25rem;
  height: calc(100vh - 65px);
  min-height: 640px;
}

/* ========================================================
   左カラム：入力フォームパネル (Flat & Clean)
   ======================================================== */
.form-panel {
  background-color: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-panel);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* 書類選択タブ (Flat Segmented Control) */
.form-tabs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  background-color: var(--color-slate-50);
  border-bottom: 1px solid var(--border-default);
  padding: 0.35rem;
  gap: 0.25rem;
}

.tab-btn {
  background-color: transparent;
  border: 1px solid transparent;
  padding: 0.55rem 0.35rem;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--color-slate-600);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
  white-space: nowrap;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tab-btn:hover {
  color: var(--color-slate-900);
  background-color: rgba(255, 255, 255, 0.7);
}

.tab-btn.active {
  background-color: #ffffff;
  color: var(--color-slate-900);
  border-color: var(--border-default);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  font-weight: 700;
}

/* フォーム本体スクロール領域 */
.form-content {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem 1.4rem;
  background-color: #ffffff;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

/* ========================================================
   フォームコンポーネント (Clean Flat)
   ======================================================== */

/* セクションタイトル（薄色背景＋太枠をやめ、フラットで上品な見出しへ） */
.section-title {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-slate-900);
  background-color: transparent;
  border: none;
  border-bottom: 1px solid var(--color-slate-100);
  padding: 0 0 0.5rem 0;
  margin-top: 1.5rem;
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.section-title:first-child {
  margin-top: 0;
}

/* プリセット選択ボックス (Flat Card) */
.preset-box {
  background-color: var(--color-slate-50);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.85rem;
  margin-bottom: 1.15rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.preset-box label {
  margin-bottom: 0;
  color: var(--color-slate-800);
  font-size: 0.8rem;
  font-weight: 700;
}

.preset-box select {
  max-width: 310px;
  background-color: #ffffff;
  font-weight: 500;
}

/* 重複項目プルダウン参照バー (青背景＋青枠をやめ、クリーンなフラットツールバーへ) */
.ref-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  background-color: var(--color-slate-50);
  border: 1px solid var(--border-default);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  margin-bottom: 0.85rem;
}

.ref-toolbar-left {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.ref-toolbar-icon {
  color: var(--color-slate-500);
  display: flex;
}

.ref-toolbar-label {
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--color-slate-700);
  white-space: nowrap;
}

.ref-toolbar select {
  font-size: 0.78rem;
  padding: 0.3rem 0.55rem;
  border: 1px solid var(--border-default);
  background-color: #ffffff;
  color: var(--color-slate-800);
  border-radius: var(--radius-xs);
  cursor: pointer;
  max-width: 300px;
}

.ref-toolbar select:focus {
  border-color: var(--color-accent);
}

/* 入力グループ＆行 */
.form-group {
  margin-bottom: 0.85rem;
}

.form-row {
  display: flex;
  gap: 0.65rem;
}

.form-row > * {
  flex: 1;
}

label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-slate-700);
  margin-bottom: 0.3rem;
}

label:has(input[type="checkbox"]),
label:has(input[type="radio"]),
label.inline-label {
  justify-content: flex-start;
  gap: 0.45rem;
  cursor: pointer;
  font-weight: 500;
}

.label-hint {
  font-weight: 400;
  font-size: 0.72rem;
  color: var(--color-slate-400);
}

/* テキスト・数値・セレクト入力 */
input[type="text"],
input[type="number"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: 0.5rem 0.65rem;
  font-size: 0.85rem;
  color: var(--text-main);
  background-color: #ffffff;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xs);
  font-family: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.08);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-slate-400);
}

/* 郵便番号検索ボタン付き入力欄 */
.input-with-btn {
  display: flex;
  gap: 0.35rem;
}

.input-with-btn input {
  flex: 1;
}

.btn-zip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background-color: var(--color-slate-50);
  border: 1px solid var(--border-default);
  color: var(--color-slate-700);
  font-size: 0.76rem;
  font-weight: 600;
  padding: 0 0.65rem;
  cursor: pointer;
  border-radius: var(--radius-xs);
  white-space: nowrap;
  transition: all 0.15s ease;
}

.btn-zip:hover {
  background-color: var(--color-slate-100);
  color: var(--color-slate-900);
  border-color: var(--color-slate-300);
}

/* 申立て趣旨ブロック (Clean Flat Cards) */
.claim-card {
  background-color: #ffffff;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  margin-bottom: 0.85rem;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.claim-card.inactive {
  background-color: var(--color-slate-50);
  border-color: var(--color-slate-200);
  opacity: 0.6;
}

.claim-card-header {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin-bottom: 0.75rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid var(--border-subtle);
}

.claim-card-header label {
  margin: 0 !important;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--color-slate-900);
  line-height: 1.4;
}

.claim-card-header input[type="checkbox"] {
  width: 17px;
  height: 17px;
  margin: 0;
  flex-shrink: 0;
}

/* 送達場所ラジオ選択 */
.delivery-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.4rem;
  margin-bottom: 0.65rem;
}

.delivery-radio-label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.65rem;
  background-color: #ffffff;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xs);
  cursor: pointer;
  font-size: 0.78rem;
  color: var(--color-slate-700);
  user-select: none;
  transition: all 0.15s ease;
}

.delivery-radio-label:hover {
  background-color: var(--color-slate-50);
  border-color: var(--color-slate-300);
}

.delivery-radio-label.selected {
  background-color: var(--color-slate-900);
  border-color: var(--color-slate-900);
  color: #ffffff;
  font-weight: 600;
}

/* チェックボックス・ラジオ共通スタイル調整 */
input[type="checkbox"],
input[type="radio"] {
  cursor: pointer;
  accent-color: var(--color-slate-900);
}

/* ========================================================
   右カラム：プレビュー＆出力パネル (Modern SaaS Desktop)
   ======================================================== */
.preview-panel {
  background-color: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-panel);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* プレビューヘッダー */
.preview-header {
  padding: 0.75rem 1.25rem;
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-default);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.preview-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.preview-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-slate-900);
  letter-spacing: -0.01em;
}

/* 赤の座布団を廃止 -> 上品なインラインステータス */
.guide-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  color: var(--color-slate-600);
  background-color: var(--color-slate-100);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-pill);
  font-weight: 500;
}

.guide-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-warning);
}

/* プレビュー書類切り替えタブ */
.preview-doc-tabs {
  display: flex;
  gap: 0.25rem;
  background-color: var(--color-slate-50);
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-default);
}

.doc-tab-btn {
  background-color: transparent;
  color: var(--color-slate-600);
  border: 1px solid transparent;
  border-radius: var(--radius-xs);
  padding: 0.3rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.doc-tab-btn:hover {
  color: var(--color-slate-900);
}

.doc-tab-btn.active {
  background-color: #ffffff;
  color: var(--color-slate-900);
  border-color: var(--border-default);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  font-weight: 700;
}

/* プレビュー本体 (上質なデスク調背景) */
.preview-body {
  flex: 1;
  background-color: var(--bg-desk);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.preview-frame {
  width: 100%;
  height: 100%;
  border: none;
  background-color: #ffffff;
}

/* ローディングオーバーレイ */
.loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(2px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 50;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-slate-700);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
}

.loading-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.spinner {
  width: 28px;
  height: 28px;
  border: 2px solid var(--color-slate-200);
  border-top-color: var(--color-slate-900);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-bottom: 0.65rem;
}

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

/* プレビュー下部：アクションエリア (Clean Minimalist) */
.preview-actions {
  padding: 1rem 1.25rem;
  background-color: #ffffff;
  border-top: 1px solid var(--border-default);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.action-row-main {
  display: flex;
  gap: 0.5rem;
}

.action-row-sub {
  display: flex;
  gap: 0.5rem;
}

.action-row-sub > * {
  flex: 1;
}

/* ボタン基本スタイル */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.55rem 0.95rem;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.12s ease-in-out;
  text-decoration: none;
  white-space: nowrap;
}

.btn svg {
  flex-shrink: 0;
}

/* メイン保存ボタン (洗練されたダークブラック) */
.btn-primary-large {
  flex: 1;
  padding: 0.75rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 700;
  background-color: var(--color-slate-900);
  color: #ffffff;
  border-color: var(--color-slate-900);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.12);
}

.btn-primary-large:hover {
  background-color: var(--color-slate-800);
  border-color: var(--color-slate-800);
}

.btn-primary-large:active {
  transform: translateY(1px);
}

/* サブボタン (クリーンなアウトライン) */
.btn-secondary {
  background-color: #ffffff;
  color: var(--color-slate-700);
  border-color: var(--border-default);
  padding: 0.6rem 0.85rem;
}

.btn-secondary:hover {
  background-color: var(--color-slate-50);
  color: var(--color-slate-900);
  border-color: var(--color-slate-300);
}

.btn-secondary:active {
  background-color: var(--color-slate-100);
}

.action-footer-note {
  font-size: 0.72rem;
  color: var(--color-slate-400);
  text-align: center;
}

/* ========================================================
   トースト通知 (Modern Floating Toast)
   ======================================================== */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  pointer-events: none;
}

.toast {
  background-color: var(--color-slate-900);
  color: #ffffff;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  pointer-events: auto;
  border-left: 3px solid var(--color-accent);
  animation: toastIn 0.2s ease-out forwards;
}

.toast.toast-success {
  border-left-color: var(--color-success);
}

.toast.toast-error {
  border-left-color: var(--color-error);
}

.toast.fade-out {
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================================
   レスポンシブ対応
   ======================================================== */
@media (max-width: 1024px) {
  .main-wrapper {
    grid-template-columns: 1fr;
    height: auto;
  }
  .preview-panel {
    height: 700px;
  }
}