/* ===========================================
   CTO斉藤: IMJ Flow 共通スタイルシート
   全ページで共通のCSS変数・コンポーネントを統合
   =========================================== */

/* --- CSS Variables --- */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --success: #16a34a;
  --success-light: #dcfce7;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --danger: #dc2626;
  --danger-light: #fee2e2;
  --purple: #7c3aed;
  --purple-light: #ede9fe;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-900: #111827;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);

  /* パイプライン・ステータス色（寒色→暖色、各ペアは薄い→濃いの順） */
  --status-new: #3d6fd9;
  --status-researching: #8a78c4;
  --status-researched: #5a4a9e;
  --status-hearing-scheduled: #5ac49a;
  --status-hearing-done: #2da67d;
  --status-meeting: #8bc34a;
  --status-proposal-draft: #f5b050;
  --status-proposal-sent: #f09030;
  --status-contract-draft: #e07a50;
  --status-contract-signing: #c96a45;
  --status-contracted: #d94a4a;

  /* プレースホルダー色（薄め・入力済みと区別しやすく） */
  --placeholder-color: #c4c8cc;
}

/* --- Placeholder（サイト全体で統一） --- */
input::placeholder,
textarea::placeholder {
  color: var(--placeholder-color);
}
input::-webkit-input-placeholder,
textarea::-webkit-input-placeholder { color: var(--placeholder-color); }
input::-moz-placeholder,
textarea::-moz-placeholder { color: var(--placeholder-color); opacity: 1; }
input:-ms-input-placeholder,
textarea:-ms-input-placeholder { color: var(--placeholder-color); }

/* --- Reset --- */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--gray-50);
  color: var(--gray-900);
  line-height: 1.5;
}

/* --- Layout --- */
.container { width: 100%; max-width: 1400px; margin: 0 auto; padding: 24px; }

/* --- Breadcrumb --- */
.breadcrumb { font-size: 12px; color: #111827; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.breadcrumb a { color: #111827; text-decoration: underline; }
.breadcrumb a:hover { opacity: 0.7; }
.breadcrumb-home { display: inline-flex; align-items: center; }
.breadcrumb-home svg { flex-shrink: 0; }
.breadcrumb-sep { color: #111827; }

.page-heading { font-size: 22px; font-weight: 700; color: #111827; margin: 0 0 20px; padding-bottom: 12px; border-bottom: 1px solid #e5e7eb; letter-spacing: -0.02em; line-height: 1.3; }
.placeholder-msg { color: var(--gray-500); margin-top: 8px; font-size: 14px; }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.15s ease;
  font-family: inherit;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  background: white;
  color: var(--gray-700);
  border: 1px solid var(--gray-200);
}
.btn:hover { background: var(--gray-50); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: white; border-color: var(--primary); font-weight: 600; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: white; color: var(--gray-700); border: 1px solid var(--gray-200); }
.btn-secondary:hover { background: var(--gray-50); }
.btn-success { background: var(--success); color: white; border-color: var(--success); }
.btn-success:hover { background: #15803d; }
.btn-warning { background: var(--warning); color: white; border-color: var(--warning); }
.btn-danger { background: white; color: var(--gray-400); border: 1px solid var(--gray-200); }
.btn-danger:hover { background: var(--gray-50); color: var(--gray-500); }
.btn-sm { padding: 3px 8px; font-size: 11px; border-radius: 4px; font-weight: 500; }
.btn-icon { padding: 4px 8px; font-size: 14px; border: none; background: none; color: var(--gray-500); cursor: pointer; }
.btn-icon:hover { color: var(--gray-700); }
.btn-ai { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; border: none; }
.btn-ai:hover { opacity: 0.9; }

/* --- Stats --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: white;
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}
.stat-card .label { font-size: 12px; color: var(--gray-500); text-transform: uppercase; letter-spacing: 0.5px; }
.stat-card .value { font-size: 28px; font-weight: 700; margin-top: 4px; }
.stat-card .sub { font-size: 12px; color: var(--gray-500); margin-top: 4px; }
.stat-card--warning .value { color: var(--warning); }
.stat-card--primary .value { color: var(--primary); }
.stat-card--danger .value { color: var(--danger); }
.stat-card--success .value { color: var(--success); }
/* カードは薄い色だと見づらいため濃い色で統一 */
.stat-card--researching .value { color: var(--status-researched); }
.stat-card--proposal-draft .value { color: var(--status-proposal-sent); }
.stat-card--proposal-sent .value { color: var(--status-proposal-sent); }
.stat-card--contracted .value { color: var(--status-contracted); }

/* --- Toolbar --- */
.toolbar {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.toolbar input, .toolbar select {
  padding: 8px 12px;
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  font-size: 13px;
  outline: none;
  background: white;
  font-family: inherit;
}
.toolbar input:focus, .toolbar select:focus { border-color: var(--primary); }
.toolbar input[type="text"] { min-width: 200px; }
.toolbar label {
  font-size: 12px;
  color: var(--gray-500);
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

/* --- Table --- */
.table-wrap {
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
table { width: 100%; border-collapse: collapse; }
thead th {
  text-align: left;
  padding: 10px 14px;
  font-size: 11px;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  white-space: nowrap;
}
th { padding: 10px 14px; text-align: left; font-size: 11px; font-weight: 600; color: var(--gray-500); background: var(--gray-50); border-bottom: 1px solid var(--gray-200); }
td { padding: 12px 14px; font-size: 13px; border-bottom: 1px solid var(--gray-100); }
tr:hover { background: var(--gray-50); }
tr:last-child td { border-bottom: none; }
tr.archived { opacity: 0.5; }
.empty-row td { text-align: center; padding: 40px; color: var(--gray-400); }

/* --- Badge --- */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}
.badge-new { background: var(--primary-light); color: var(--primary-dark); }
.badge-existing { background: var(--success-light); color: #166534; }
.badge-draft { background: var(--gray-100); color: var(--gray-500); }
.badge-success { background: #dcfce7; color: #166534; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fef2f2; color: #991b1b; }
.badge-info { background: #dbeafe; color: #1e40af; }
.badge-muted { background: var(--gray-100); color: var(--gray-500); }

.status {
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}

/* --- Pagination --- */
.pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  font-size: 13px;
  color: var(--gray-500);
}
.pagination button {
  padding: 6px 14px;
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  background: white;
  color: var(--gray-700);
  font-size: 13px;
  cursor: pointer;
}
.pagination button:hover { background: var(--gray-50); }
.pagination button:disabled { opacity: 0.3; cursor: not-allowed; }

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s, visibility 0.2s;
}
.modal-overlay.active,
.modal-overlay.show {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.modal {
  background: white;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  max-width: 560px;
  width: 90%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 24px;
}
.modal-wide { max-width: 720px; }
.modal h2 { font-size: 18px; margin-bottom: 16px; }
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-200);
}
.modal-header h3 {
  font-size: 16px;
  font-weight: 700;
}
.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--gray-400);
  padding: 4px;
  border-radius: 6px;
}
.modal-close:hover {
  background: var(--gray-100);
}
.modal-body { padding: 24px; }
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 16px 24px;
  border-top: 1px solid var(--gray-200);
}
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 20px; }
.close-btn { background: none; border: none; font-size: 20px; cursor: pointer; color: var(--gray-400); padding: 4px; }

/* --- Form --- */
.form-group { margin-bottom: 14px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--gray-700);
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  font-size: 14px;
  outline: none;
  box-sizing: border-box;
  font-family: inherit;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.field { margin-bottom: 14px; }
.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 4px;
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

/* --- Detail Grid --- */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.detail-item { margin-bottom: 8px; }
.detail-item .dlabel, .detail-item .label { font-size: 11px; color: var(--gray-500); text-transform: uppercase; margin-bottom: 2px; }
.detail-item .val, .detail-item .value { font-size: 14px; font-weight: 500; }
.detail-item input, .detail-item textarea, .detail-item select {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
}
.detail-item input:focus, .detail-item textarea:focus { border-color: var(--primary); }
.detail-item textarea { resize: vertical; min-height: 60px; }

/* --- Section --- */
.section { margin-bottom: 24px; }
.section-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* --- Empty State --- */
.empty { text-align: center; padding: 60px 20px; color: var(--gray-400); }
.empty h3 { font-size: 16px; margin-bottom: 8px; color: var(--gray-500); }

/* --- Utility --- */
.mono { font-family: 'SF Mono', Monaco, monospace; font-size: 12px; color: var(--gray-500); }
.truncate { max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.source-tag { font-size: 11px; color: var(--gray-500); background: var(--gray-100); padding: 2px 6px; border-radius: 4px; }

/* --- Spinner --- */
.ai-loading { display: inline-flex; align-items: center; gap: 8px; }
.ai-loading .spinner {
  width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* --- Responsive --- */
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .detail-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

/* ============================================================
 * WCAG アクセシビリティ基本対応（CPO木村）
 * ============================================================ */

/* フォーカスリング（キーボード操作対応） */
:focus-visible {
  outline: 2px solid var(--primary, #2563eb);
  outline-offset: 2px;
  border-radius: 4px;
}

/* アニメーション軽減（前庭障害対応） */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* 高コントラストモード */
@media (prefers-contrast: high) {
  :root {
    --primary: #1d4ed8;
    --text-secondary: #334155;
  }
}

/* タブ統一 */
.page-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--gray-200);
  margin-bottom: 24px;
  overflow-x: auto;
}
.page-tabs .tab {
  padding: 10px 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-500);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: all 0.15s ease;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  font-family: inherit;
}
.page-tabs .tab:hover {
  color: var(--primary);
}
.page-tabs .tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Drop zone (file upload) */
.drop-zone {
  border: 2px dashed var(--gray-300);
  border-radius: 12px;
  padding: 32px 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--gray-50);
  margin-bottom: 16px;
}
.drop-zone:hover, .drop-zone.dragover, .drop-zone.drag-over {
  border-color: var(--primary);
  background: #eff6ff;
}
.drop-zone-text { font-size: 14px; color: var(--gray-600); line-height: 1.6; }
.drop-zone-text strong { color: var(--primary); }
.drop-zone-hint { font-size: 12px; color: var(--gray-400); margin-top: 6px; }

/* Search & filter bar */
.search-input,
.filter-select {
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  font-size: 13px;
  font-family: inherit;
  color: var(--gray-700);
  background: #fff;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.search-input { min-width: 0; }
.search-input::placeholder { color: var(--gray-400); }
.search-input:focus,
.filter-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.12);
}
.filter-select {
  padding-right: 28px;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  cursor: pointer;
}