/* ============================================
   T-Series Design Guide (design-internal.md)
   完全なCSS変数一覧
   ============================================ */
:root {
  /* Colors - Primary */
  --color-primary: #0ea5e9;
  --color-primary-hover: #0284c7;
  --color-primary-light: #e0f2fe;

  /* Colors - Semantic */
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-error: #ff0303;

  /* Colors - Neutral */
  --color-background: #f8fafc;
  --color-surface: #ffffff;
  --color-text-primary: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-dark: #cbd5e1;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-h1: 1.5rem;
  --font-size-h2: 1.25rem;
  --font-size-h3: 1.125rem;
  --font-size-body: 1rem;
  --font-size-small: 0.875rem;
  --font-size-xs: 0.75rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 40px rgba(0,0,0,0.15);
  --shadow-focus: 0 0 0 3px rgba(14, 165, 233, 0.15);
  --shadow-focus-error: 0 0 0 3px rgba(255, 3, 3, 0.15);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;

  /* Z-Index */
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-header: 50;
  --z-modal: 100;
  --z-toast: 200;
  --z-tooltip: 300;
}

/* ============================================
   リセット・ベース
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  line-height: 1.6;
}

/* ============================================
   ヘッダー (design-internal.md セクション13)
   ============================================ */
.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  height: 64px;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--color-text-primary);
}

.header-logo {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background-color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.header-title {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
}

.header-toolbar {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.header-icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
}

.header-icon-btn:hover {
  background-color: var(--color-border);
  color: var(--color-text-primary);
}

.header-user {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
}

.header-user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

/* ============================================
   ナビゲーション
   ============================================ */
.nav {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  gap: 0;
}

.nav-item {
  padding: 12px var(--spacing-md);
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.nav-item:hover {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.nav-item.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

/* ============================================
   メインコンテンツ
   ============================================ */
.main {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
}

.page-title {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-lg);
}

/* ============================================
   ボタン (design-internal.md セクション7)
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  line-height: 1.5;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
}

.btn-primary:focus {
  box-shadow: var(--shadow-focus);
}

.btn-secondary {
  background-color: white;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary-light);
}

.btn-text {
  background-color: transparent;
  color: var(--color-text-secondary);
  border: none;
}

.btn-text:hover {
  background-color: rgba(0, 0, 0, 0.05);
  color: var(--color-primary);
}

.btn-danger {
  background-color: var(--color-error);
  color: white;
}

.btn-danger:hover {
  background-color: #e00000;
}

.btn-danger:focus {
  box-shadow: var(--shadow-focus-error);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text-secondary);
  border: none;
  padding: 8px;
}

.btn-ghost:hover {
  background-color: #f1f5f9;
  color: var(--color-text-primary);
}

.btn-sm {
  padding: 4px 12px;
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: 12px 24px;
  font-size: var(--font-size-body);
}

/* ============================================
   入力フィールド (design-internal.md セクション8)
   ============================================ */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
textarea,
select {
  width: 100%;
  padding: 12px 16px;
  font-size: var(--font-size-body);
  font-family: var(--font-family);
  color: var(--color-text-primary);
  background-color: white;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-sm);
  outline: none;
  transition: all var(--transition-normal);
}

input:hover,
textarea:hover,
select:hover {
  border-color: var(--color-text-muted);
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-focus);
}

input:disabled,
textarea:disabled,
select:disabled {
  background-color: #f1f5f9;
  color: var(--color-text-muted);
  cursor: not-allowed;
}

input.error,
textarea.error,
select.error {
  border-color: var(--color-error);
  background-color: #fef2f2;
}

input.error:focus,
textarea.error:focus,
select.error:focus {
  box-shadow: var(--shadow-focus-error);
}

label {
  display: block;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-bold);
  color: #374151;
  margin-bottom: var(--spacing-xs);
}

label.required::after {
  content: " *";
  color: var(--color-error);
}

.error-message {
  font-size: var(--font-size-xs);
  color: var(--color-error);
  margin-top: var(--spacing-xs);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
}

/* ============================================
   カード (design-internal.md セクション9)
   ============================================ */
.card {
  background-color: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.card-header {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.card-title {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-background);
}

/* ============================================
   ログイン画面
   ============================================ */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.login-card {
  width: 100%;
  max-width: 400px;
}

.login-submit {
  width: 100%;
}

/* ============================================
   テーブル (design-internal.md セクション11)
   ============================================ */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

table {
  width: 100%;
  border-collapse: collapse;
  background-color: white;
}

thead {
  background-color: var(--color-background);
}

th {
  padding: 12px 16px;
  text-align: left;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--color-border);
}

td {
  padding: 16px;
  font-size: var(--font-size-small);
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border);
}

tbody tr:hover {
  background-color: var(--color-background);
}

tbody tr:last-child td {
  border-bottom: none;
}

/* ============================================
   バッジ (design-internal.md セクション12)
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
}

.badge-default {
  background-color: #f1f5f9;
  color: var(--color-text-secondary);
}

.badge-primary {
  background-color: var(--color-primary-light);
  color: var(--color-primary-hover);
}

.badge-success {
  background-color: #dcfce7;
  color: #16a34a;
}

.badge-warning {
  background-color: #fef3c7;
  color: #d97706;
}

.badge-error {
  background-color: #fee2e2;
  color: #dc2626;
}

/* ============================================
   モーダル (design-internal.md セクション10)
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background-color: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow: hidden;
  animation: modal-enter 0.3s ease;
}

@keyframes modal-enter {
  from { opacity: 0; transform: scale(0.95) translateY(-10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.modal-title {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.modal-body {
  padding: var(--spacing-lg);
  overflow-y: auto;
}

.modal-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  background: none;
}

.modal-close:hover {
  background-color: #f1f5f9;
  color: var(--color-text-primary);
}

/* ============================================
   アニメーション (design-internal.md セクション17)
   ============================================ */
@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-fade-in {
  animation: fade-in 0.2s ease;
}

@keyframes slide-up {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-slide-up {
  animation: slide-up 0.3s ease;
}

@keyframes scale-in {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.animate-scale-in {
  animation: scale-in 0.2s ease;
}

/* ============================================
   アプリ固有: 見積もり入力
   ============================================ */
.estimate-form-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-lg);
}

@media (max-width: 768px) {
  .estimate-form-layout {
    grid-template-columns: 1fr;
  }
}

textarea.estimate-textarea {
  min-height: 200px;
  resize: vertical;
}

/* ============================================
   アプリ固有: 結果表示
   ============================================ */
.summary-adjust-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--spacing-lg);
  align-items: start;
}

@media (max-width: 960px) {
  .summary-adjust-layout {
    grid-template-columns: 1fr;
  }
}

.summary-right .card-body {
  padding: var(--spacing-sm) var(--spacing-md);
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

@media (max-width: 768px) {
  .result-grid {
    grid-template-columns: 1fr;
  }
}

.ai-total-card {
  background: linear-gradient(135deg, #059669, #10b981);
}

.result-stat {
  text-align: center;
  padding: var(--spacing-lg);
}

.result-stat-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xs);
}

.result-stat-value {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.result-stat-unit {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-normal);
}

.breakdown-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

@media (max-width: 768px) {
  .breakdown-section {
    grid-template-columns: 1fr;
  }
}

/* 合計金額カード */
.total-card {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: white;
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  text-align: center;
}

.total-label {
  font-size: var(--font-size-small);
  opacity: 0.85;
  margin-bottom: var(--spacing-xs);
}

.total-amount {
  font-size: 2.5rem;
  font-weight: var(--font-weight-bold);
  font-variant-numeric: tabular-nums;
}

.total-sub {
  font-size: var(--font-size-xs);
  opacity: 0.7;
  margin-top: var(--spacing-xs);
}

/* ============================================
   アプリ固有: 月額サブスク試算
   ============================================ */
.subscription-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

@media (max-width: 768px) {
  .subscription-grid {
    grid-template-columns: 1fr;
  }
}

.subscription-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  text-align: center;
}

.subscription-label {
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.subscription-monthly {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.subscription-unit {
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-normal);
  color: var(--color-text-secondary);
}

.subscription-detail {
  margin-top: var(--spacing-sm);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
}

.subscription-detail-row {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  padding: 2px 0;
}

/* ============================================
   アプリ固有: AI活用見積もり比較
   ============================================ */
.ai-compare-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr 1fr;
  gap: var(--spacing-md);
  align-items: center;
}

@media (max-width: 768px) {
  .ai-compare-grid {
    grid-template-columns: 1fr;
  }
  .ai-compare-arrow {
    transform: rotate(90deg);
    justify-self: center;
  }
}

.ai-compare-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  text-align: center;
}

.ai-compare-highlight {
  border-color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 5%, transparent);
}

.ai-compare-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.ai-compare-value {
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  font-variant-numeric: tabular-nums;
}

.ai-compare-sub {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

.ai-compare-arrow {
  justify-self: center;
}

/* ============================================
   アプリ固有: 手動調整スライダー
   ============================================ */
.adjust-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) 0;
}

.adjust-label {
  flex: 0 0 120px;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
}

.adjust-slider {
  flex: 1;
  -webkit-appearance: none;
  height: 6px;
  border-radius: 3px;
  background: var(--color-border);
  outline: none;
  border: none;
  padding: 0;
}

.adjust-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
}

.adjust-value {
  flex: 0 0 80px;
  text-align: right;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-semibold);
  font-variant-numeric: tabular-nums;
}

/* ============================================
   アプリ固有: ローディング
   ============================================ */
.loading-overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl);
  gap: var(--spacing-md);
}

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

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
}

.loading-text {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
}

.analysis-steps {
  list-style: none;
  padding: 0;
}

.analysis-step {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

.analysis-step.done {
  color: var(--color-success);
}

.analysis-step.current {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.step-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ============================================
   アプリ固有: マスタ管理
   ============================================ */
.master-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

@media (max-width: 960px) {
  .master-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .master-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   アプリ固有: 履歴
   ============================================ */
.history-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

/* ============================================
   結果ヘッダー
   ============================================ */
.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ============================================
   フッター
   ============================================ */
.app-footer {
  max-width: 1280px;
  margin: var(--spacing-2xl) auto var(--spacing-lg);
  padding: 0 var(--spacing-md);
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ============================================
   ユーティリティ
   ============================================ */
.text-right { text-align: right; }
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-tabular { font-variant-numeric: tabular-nums; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-end { display: flex; justify-content: flex-end; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================
   印刷用スタイル
   ============================================ */
@media print {
  .no-print { display: none !important; }
  .header, .nav, .app-footer { display: none !important; }
  .main { max-width: none; padding: 0; }
  .summary-adjust-layout { grid-template-columns: 1fr; }
  .total-card, .ai-total-card { color-adjust: exact; -webkit-print-color-adjust: exact; }
  .badge { border: 1px solid currentColor; }
  body { font-size: 12px; }
}