:root {
  --navy-primary: #0F2942;
  --navy-dark: #0A1C2E;
  --navy-light: #EBF3FA;
  --navy-accent: #1D4ED8;
  --navy-hover: #1E40AF;
  
  --emerald-primary: #059669;
  --emerald-light: #ECFDF5;
  --emerald-dark: #065F46;

  --ink: #0F172A;
  --sub-text: #475569;
  --muted: #64748B;
  --border: #CBD5E1;
  --bg-page: #F1F5F9;
  --bg-card: #FFFFFF;

  --success-bg: #EBF8EE;
  --success-border: #15803D;
  --success-text: #0D3822;

  --warning-bg: #FEF3C7;
  --warning-border: #D97706;
  --warning-text: #78350F;

  --danger-bg: #FEE2E2;
  --danger-border: #DC2626;
  --danger-text: #7F1D1D;

  --font-family: system-ui, -apple-system, 'Microsoft JhengHei', 'PingFang TC', 'Noto Sans TC', sans-serif;
  --font-kai: '標楷體', 'DFKai-SB', 'BiauKai', 'Times New Roman', serif;
}

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

body {
  font-family: var(--font-family);
  background: var(--bg-page);
  color: var(--ink);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 頂部導航列 */
.navbar {
  background: linear-gradient(135deg, #0F2942 0%, #1E3A8A 100%);
  color: #fff;
  padding: 16px 24px;
  box-shadow: 0 4px 14px rgba(15, 41, 66, 0.2);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  font-size: 2rem;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.brand-text h1 {
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: 0.5px;
  color: #fff;
}

.brand-text p {
  font-size: 0.82rem;
  color: #93C5FD;
  margin-top: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* 主要版面容器 */
.main-layout {
  max-width: 1240px;
  margin: 20px auto;
  padding: 0 16px;
  flex: 1;
  width: 100%;
}

/* ==========================================================================
   0. 頂部 4 大情境導航大卡片 (Scenario Quick Entrance)
   ========================================================================== */
.scenario-nav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}

.scenario-card {
  background: #FFFFFF;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(15, 41, 66, 0.04);
  text-decoration: none;
  user-select: none;
}

.scenario-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(15, 41, 66, 0.1);
  border-color: var(--navy-accent);
}

.scenario-icon-wrap {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.scenario-1 .scenario-icon-wrap { background: #ECFDF5; color: #059669; }
.scenario-2 .scenario-icon-wrap { background: #EFF6FF; color: #2563EB; }
.scenario-3 .scenario-icon-wrap { background: #FFFBEB; color: #D97706; }
.scenario-4 .scenario-icon-wrap { background: #FEF2F2; color: #DC2626; }

.scenario-title {
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--navy-primary);
  margin-bottom: 2px;
}

.scenario-desc {
  font-size: 0.8rem;
  color: var(--sub-text);
  line-height: 1.35;
}

/* 分頁選單 (Tabs) */
.tab-nav {
  display: flex;
  gap: 8px;
  background: #E2E8F0;
  padding: 6px;
  border-radius: 12px;
  margin-bottom: 22px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.06);
}

.tab-btn {
  flex: 1;
  min-width: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--sub-text);
  font-weight: 700;
  font-size: 0.94rem;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

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

.tab-btn.active {
  background: #fff;
  color: var(--navy-accent);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

/* 分頁內容 */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 資訊卡片 */
.card {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: 14px;
  padding: 22px;
  margin-bottom: 22px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

.card-header {
  border-bottom: 2px solid var(--navy-light);
  padding-bottom: 14px;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--navy-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ==========================================================================
   1. 三步驟摺疊導引表單 (Accordion Steps for Tab 1)
   ========================================================================== */
.accordion-step-card {
  background: #FFFFFF;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: all 0.2s ease;
}

.accordion-step-card.active {
  border-color: var(--navy-accent);
  box-shadow: 0 4px 14px rgba(29, 78, 216, 0.08);
}

.accordion-header {
  padding: 14px 18px;
  background: #F8FAFC;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid transparent;
  transition: background 0.15s ease;
}

.accordion-step-card.active .accordion-header {
  background: var(--navy-light);
  border-bottom-color: #BFDBFE;
}

.accordion-title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.step-num-badge {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--navy-primary);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
}

.accordion-step-card.active .step-num-badge {
  background: var(--navy-accent);
}

.accordion-title {
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--navy-primary);
}

.accordion-toggle-icon {
  font-size: 0.9rem;
  color: var(--sub-text);
  transition: transform 0.2s ease;
}

.accordion-step-card.active .accordion-toggle-icon {
  transform: rotate(180deg);
}

.accordion-body {
  padding: 18px;
  display: none;
}

.accordion-step-card.active .accordion-body {
  display: block;
}

/* 白話實務小抄 */
.field-tip-box {
  background: #FEF9C3;
  border-left: 4px solid #CA8A04;
  padding: 6px 10px;
  border-radius: 0 6px 6px 0;
  font-size: 0.8rem;
  color: #854D0E;
  margin-top: 4px;
  line-height: 1.45;
}

/* ==========================================================================
   2. KPI 看板卡片 (可點擊互動篩選)
   ========================================================================== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}

.kpi-card {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
  transition: all 0.2s ease;
  cursor: pointer;
  position: relative;
  user-select: none;
}

.kpi-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.08);
}

.kpi-card.active {
  box-shadow: 0 0 0 3px var(--navy-accent), 0 8px 18px rgba(29, 78, 216, 0.15);
  border-color: var(--navy-accent);
}

.kpi-card.kpi-total { border-top: 4px solid var(--navy-accent); }
.kpi-card.kpi-urgent { border-top: 4px solid #DC2626; background: #FFF5F5; }
.kpi-card.kpi-warning { border-top: 4px solid #D97706; background: #FFFDF0; }
.kpi-card.kpi-safe { border-top: 4px solid #15803D; background: #F6FFF8; }
.kpi-card.kpi-expired { border-top: 4px solid #475569; background: #F1F5F9; }

.kpi-label {
  font-size: 0.86rem;
  font-weight: 800;
  color: var(--sub-text);
  margin-bottom: 4px;
}

.kpi-val {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--navy-primary);
}

.kpi-sub {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 4px;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 800;
}

.badge-primary { background: var(--navy-light); color: var(--navy-accent); }
.badge-success { background: var(--success-bg); color: var(--success-border); border: 1px solid #BBF7D0; }
.badge-warning { background: var(--warning-bg); color: var(--warning-border); border: 1px solid #FDE68A; }
.badge-danger { background: var(--danger-bg); color: var(--danger-border); border: 1px solid #FECACA; }
.badge-dark { background: #E2E8F0; color: #334155; }

/* ==========================================================================
   3. 5 年生命週期動態進度條 (Progress Bar & Pulse)
   ========================================================================== */
.statute-progress-wrap {
  width: 100%;
  height: 7px;
  background: #E2E8F0;
  border-radius: 4px;
  overflow: hidden;
  margin-top: 6px;
}

.statute-progress-bar {
  height: 100%;
  border-radius: 4px;
  transition: width 0.3s ease;
}

.statute-progress-bar.safe {
  background: #15803D;
}

.statute-progress-bar.warning {
  background: #D97706;
}

.statute-progress-bar.urgent {
  background: #DC2626;
  animation: pulseUrgent 1.8s infinite ease-in-out;
}

.statute-progress-bar.expired {
  background: #475569;
}

@keyframes pulseUrgent {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

/* ==========================================================================
   4. 扣薪 100% 薪資結構堆疊分配條 (Stacked Bar Chart)
   ========================================================================== */
.salary-stacked-bar-container {
  margin: 18px 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}

.salary-stacked-bar {
  display: flex;
  width: 100%;
  height: 32px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
  background: #E2E8F0;
}

.stacked-seg {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.8rem;
  font-weight: 800;
  transition: width 0.3s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0 4px;
}

.seg-personal { background: #2563EB; }
.seg-dependents { background: #D97706; }
.seg-garnishable { background: #DC2626; }
.seg-exempt { background: #64748B; }

.stacked-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 12px;
  font-size: 0.84rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

/* ==========================================================================
   5. A4 擬真紙張與用印引導框 (A4 Realistic Sheet & Stamp Guides)
   ========================================================================== */
.a4-paper-wrapper {
  background: #E2E8F0;
  padding: 24px 16px;
  border-radius: 12px;
  overflow-y: auto;
  max-height: 760px;
  box-sizing: border-box;
}

.a4-paper-sheet {
  background: #FFFFFF;
  width: 100%;
  max-width: 720px;
  min-height: 720px;
  height: auto;
  margin: 0 auto;
  padding: 40px 44px;
  border-radius: 4px;
  box-shadow: 0 8px 30px rgba(15, 41, 66, 0.12);
  border: 1px solid #CBD5E1;
  font-family: var(--font-kai);
  font-size: 1.05rem;
  line-height: 2.1;
  color: #0F172A;
  white-space: pre-wrap;
  word-break: break-word;
  box-sizing: border-box;
  text-align: justify;
}

.stamp-guide-tag {
  display: inline-block;
  border: 1.5px dashed #DC2626;
  background: rgba(220, 38, 38, 0.08);
  color: #DC2626;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.88rem;
  font-weight: 800;
  margin-left: 6px;
  vertical-align: middle;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   6. 通用彈窗與捲動保護 (Modal Overlay & Dialog)
   ========================================================================== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  z-index: 999;
  align-items: center;
  justify-content: center;
  padding: 20px 16px;
  overflow-y: auto;
}

.modal-dialog {
  background: #FFFFFF;
  border: 1.5px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  margin: auto;
  width: 100%;
  max-width: 580px;
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: 0 20px 50px rgba(15, 41, 66, 0.3);
  position: relative;
}

/* 表單元件 */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.col-span-2 {
  grid-column: span 2;
}

.form-group.col-span-full {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.96rem;
  font-family: inherit;
  color: var(--ink);
  background: #fff;
  transition: all 0.15s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--navy-accent);
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.15);
}

.form-control[readonly] {
  background: var(--bg-page);
  color: var(--sub-text);
}

.form-hint {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.4;
}

/* 勾選清單 (Checkbox Grid) */
.checkbox-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px;
  margin: 14px 0;
}

.checkbox-card {
  border: 1.5px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: #fff;
  cursor: pointer;
  transition: all 0.15s ease;
}

.checkbox-card:hover {
  background: var(--navy-light);
  border-color: #93C5FD;
}

.checkbox-card input[type="checkbox"] {
  margin-top: 3px;
  width: 18px;
  height: 18px;
  accent-color: var(--navy-accent);
  cursor: pointer;
}

.checkbox-label h4 {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--navy-primary);
  margin-bottom: 2px;
}

.checkbox-label p {
  font-size: 0.82rem;
  color: var(--sub-text);
  line-height: 1.35;
}

/* 警示框 */
.alert-box {
  background: #FEF3C7;
  border-left: 5px solid #D97706;
  padding: 12px 16px;
  border-radius: 0 8px 8px 0;
  font-size: 0.9rem;
  color: #78350F;
  margin: 10px 0;
  line-height: 1.6;
}

.alert-box.danger {
  background: #FEE2E2;
  border-left-color: #DC2626;
  color: #7F1D1D;
}

.alert-box.info {
  background: var(--navy-light);
  border-left-color: var(--navy-accent);
  color: var(--navy-primary);
}

/* 按鈕樣式與微交互 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 0.94rem;
  font-weight: 800;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
  text-decoration: none;
}

.btn-primary {
  background: var(--navy-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--navy-hover);
  transform: translateY(-1px);
}

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

.btn-word {
  background: #2B579A;
  color: #fff;
}
.btn-word:hover {
  background: #1E3F72;
}

.btn-emerald {
  background: var(--emerald-primary);
  color: #fff;
}
.btn-emerald:hover {
  background: var(--emerald-dark);
}

.btn-warning {
  background: #F59E0B;
  color: #0F172A;
}
.btn-warning:hover {
  background: #D97706;
}

.btn-outline {
  background: #fff;
  border-color: var(--border);
  color: var(--navy-primary);
}
.btn-outline:hover {
  background: var(--navy-light);
  border-color: var(--navy-accent);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.84rem;
}

.btn-feedback-success {
  background: #059669 !important;
  color: #fff !important;
  border-color: #059669 !important;
  transform: scale(1.03);
}

/* 雙欄公文排版預覽 */
.doc-split-view {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.doc-actions-bar {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  flex-wrap: wrap;
}

/* 早期關懷話術卡片 */
.script-card {
  background: #fff;
  border: 1.5px solid var(--border);
  border-left: 5px solid var(--navy-accent);
  border-radius: 8px;
  padding: 18px 22px;
  margin-bottom: 18px;
}

.script-card.warning {
  border-left-color: #D97706;
}

.script-card.danger {
  border-left-color: #DC2626;
}

.script-card h3 {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--navy-primary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.script-content {
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px;
  font-size: 0.92rem;
  line-height: 1.7;
  white-space: pre-wrap;
  color: var(--ink);
  margin-bottom: 12px;
}

/* 扣薪計算機結果展示區 */
.calc-result-box {
  background: #F0FDF4;
  border: 1.5px solid #BBF7D0;
  border-radius: 10px;
  padding: 20px;
  margin-top: 14px;
}

.calc-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px dashed #CBD5E1;
  font-size: 0.95rem;
}

.calc-row:last-child {
  border-bottom: none;
}

.calc-row-highlight {
  background: #DCFCE7;
  padding: 14px;
  border-radius: 10px;
  font-size: 1.15rem;
  font-weight: 900;
  color: #15803D;
  margin-top: 10px;
  text-align: center;
}

/* 台帳表格 */
.table-responsive {
  overflow-x: auto;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  background: #fff;
}

.ledger-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.ledger-table th {
  background: var(--navy-primary);
  color: #fff;
  padding: 14px 16px;
  font-weight: 800;
  white-space: nowrap;
}

.ledger-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.ledger-table tbody tr:nth-child(even) td {
  background: #F8FAFC;
}

.ledger-table tbody tr:hover td {
  background: #EDF2F7;
}

/* 提示與 Toast */
.toast-box {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(30px);
  background: rgba(15, 23, 42, 0.96);
  color: #fff;
  padding: 12px 24px;
  border-radius: 24px;
  font-size: 0.95rem;
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s ease;
  z-index: 1000;
}

.toast-box.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* 頁尾 */
.app-footer {
  text-align: center;
  padding: 24px 16px;
  font-size: 0.88rem;
  color: var(--muted);
  border-top: 1.5px solid var(--border);
  background: #fff;
  margin-top: auto;
}

/* 響應式佈局 */
@media (max-width: 900px) {
  .doc-split-view {
    grid-template-columns: 1fr;
  }
  .form-group.col-span-2 {
    grid-column: span 1;
  }
  .tab-btn {
    min-width: 130px;
    font-size: 0.86rem;
    padding: 10px 10px;
  }
  .a4-paper-sheet {
    padding: 20px;
    font-size: 0.94rem;
  }
  .modal-dialog {
    padding: 18px;
    max-height: 85vh;
  }
}