/* ============================================
   define.xml アカデミー - 共通CSS
   ============================================ */

/* --- CSS変数定義 --- */
:root {
  /* カラーパレット */
  --color-primary: #4a1d96;
  --color-primary-light: #7c3aed;
  --color-primary-dark: #3b0764;
  --color-accent: #f59e0b;
  --color-accent-light: #fbbf24;
  --color-accent-dark: #d97706;
  --color-success: #10b981;
  --color-warning: #ef4444;
  --color-bg: #f5f3ff;
  --color-text: #1e1b4b;
  --color-text-light: #6b7280;
  --color-white: #ffffff;
  --color-border: #e5e7eb;

  /* XML テーマカラー */
  --xml-tag: #7c3aed;
  --xml-attr: #d97706;
  --xml-value: #059669;
  --xml-comment: #9ca3af;
  --xml-bg: #1e1b4b;
  --xml-text: #e0e7ff;

  /* タイポグラフィ */
  --font-family: "Noto Sans JP", sans-serif;
  --font-mono: "Consolas", "Monaco", "Courier New", monospace;
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --line-height-base: 1.7;
  --line-height-heading: 1.3;

  /* スペーシング */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 1rem;
  --spacing-4: 1.5rem;
  --spacing-5: 2rem;
  --spacing-6: 3rem;
  --spacing-8: 4rem;

  /* レイアウト */
  --max-width: 1200px;
  --border-radius: 8px;
  --card-shadow: 0 2px 8px rgba(74, 29, 150, 0.08);
  --card-shadow-hover: 0 8px 24px rgba(74, 29, 150, 0.15);

  /* トランジション */
  --transition-base: 0.3s ease;

  /* ヘッダー高さ */
  --header-height: 64px;
}

/* --- リセットCSS --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

ul,
ol {
  list-style: none;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-primary-light);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

table {
  border-collapse: collapse;
  width: 100%;
}

/* --- タイポグラフィ --- */
h1,
h2,
h3,
h4 {
  line-height: var(--line-height-heading);
  font-weight: 700;
  color: var(--color-primary-dark);
}

h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-4);
}

h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-3);
}

h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-2);
}

h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2);
}

p {
  margin-bottom: var(--spacing-3);
  color: var(--color-text);
}

/* --- レイアウト --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-3);
}

.grid {
  display: grid;
  gap: var(--spacing-4);
}

.grid-2 {
  grid-template-columns: 1fr;
}

.grid-3 {
  grid-template-columns: 1fr;
}

.grid-4 {
  grid-template-columns: 1fr;
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-wrap {
  flex-wrap: wrap;
}

.flex-column {
  flex-direction: column;
}

.gap-2 {
  gap: var(--spacing-2);
}

.gap-3 {
  gap: var(--spacing-3);
}

.gap-4 {
  gap: var(--spacing-4);
}

/* --- ヘッダー & ナビゲーション --- */
.site-header {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: var(--color-white);
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  box-shadow: 0 2px 8px rgba(59, 7, 100, 0.3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-white);
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.site-logo:hover {
  color: var(--color-accent);
}

.site-logo .logo-icon {
  font-size: var(--font-size-2xl);
}

/* デスクトップナビ */
.nav-menu {
  display: none;
  align-items: center;
  gap: var(--spacing-4);
}

.nav-menu a,
.nav-menu .nav-dropdown-toggle {
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: var(--spacing-2) 0;
  position: relative;
  transition: color var(--transition-base);
}

.nav-menu a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}

.nav-menu a:hover,
.nav-menu .nav-dropdown-toggle:hover {
  color: var(--color-accent);
}

.nav-menu a:hover::after {
  width: 100%;
}

/* ナビドロップダウン */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  cursor: pointer;
}

.nav-dropdown-toggle::after {
  content: "";
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  transition: transform var(--transition-base);
}

.nav-dropdown.active .nav-dropdown-toggle::after {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  box-shadow: var(--card-shadow-hover);
  min-width: 180px;
  padding: var(--spacing-2) 0;
  margin-top: var(--spacing-2);
  z-index: 1001;
}

.nav-dropdown.active .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-menu a {
  display: block;
  padding: var(--spacing-2) var(--spacing-4);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  white-space: nowrap;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.nav-dropdown-menu a:hover {
  background-color: var(--color-bg);
  color: var(--color-primary);
}

.nav-dropdown-menu a::after {
  display: none;
}

/* ハンバーガーメニュー */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  cursor: pointer;
  z-index: 1100;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  margin: 3px 0;
  transition: all var(--transition-base);
  border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
}

/* モバイルメニュー */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  z-index: 999;
  padding: var(--spacing-5);
  flex-direction: column;
  gap: var(--spacing-3);
  overflow-y: auto;
}

.mobile-menu.active {
  display: flex;
}

.mobile-menu a {
  color: var(--color-white);
  font-size: var(--font-size-lg);
  padding: var(--spacing-3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-base);
}

.mobile-menu a:hover {
  color: var(--color-accent);
  padding-left: var(--spacing-4);
}

.mobile-menu .mobile-submenu-label {
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--font-size-sm);
  padding: var(--spacing-2) var(--spacing-3) 0;
  border-bottom: none;
}

.mobile-menu .mobile-submenu a {
  font-size: var(--font-size-base);
  padding-left: var(--spacing-5);
}

/* --- メインコンテンツ --- */
main {
  flex: 1;
}

.section {
  padding: var(--spacing-6) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-5);
  position: relative;
}

.section-title::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary-light), var(--color-accent));
  margin: var(--spacing-2) auto 0;
  border-radius: 2px;
}

/* --- ヒーローセクション --- */
.hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
  color: var(--color-white);
  padding: var(--spacing-8) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.hero h1 {
  color: var(--color-white);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-3);
  position: relative;
}

.hero .hero-subtitle {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-5);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero p {
  color: rgba(255, 255, 255, 0.9);
}

.hero-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-3);
  display: block;
  position: relative;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-3);
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

/* --- カード --- */
.card {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  padding: var(--spacing-4);
  box-shadow: var(--card-shadow);
  transition: all var(--transition-base);
  border: 1px solid var(--color-border);
}

.card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-3);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-2);
  color: var(--color-primary-dark);
}

.card-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-3);
  line-height: 1.6;
}

.card-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-primary-light);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.card-link:hover {
  color: var(--color-accent);
}

.text-center {
  text-align: center;
}

.text-light {
  color: var(--color-text-light);
}

.text-sm {
  font-size: var(--font-size-sm);
}

.mb-4 {
  margin-bottom: var(--spacing-4);
}

.mt-4 {
  margin-top: var(--spacing-4);
}

.mt-3 {
  margin-top: var(--spacing-3);
}

.mb-3 {
  margin-bottom: var(--spacing-3);
}

/* --- ボタン --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--border-radius);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
  text-align: center;
  gap: 0.5rem;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-primary-dark);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: var(--color-white);
}

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

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

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

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

.btn-lg {
  padding: 0.875rem 2rem;
  font-size: 1rem;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: var(--font-size-sm);
}

/* --- XML コードブロック --- */
.xml-code {
  background-color: var(--xml-bg);
  color: var(--xml-text);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: var(--spacing-4);
  border-radius: var(--border-radius);
  overflow-x: auto;
  line-height: 1.6;
  position: relative;
  border: 1px solid rgba(124, 58, 237, 0.3);
}

.xml-code::before {
  content: "XML";
  position: absolute;
  top: 0;
  right: 0;
  background: var(--color-primary-light);
  color: var(--color-white);
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-radius: 0 var(--border-radius) 0 var(--border-radius);
  font-family: var(--font-family);
  font-weight: 600;
}

.xml-code .tag {
  color: #c4b5fd;
}

.xml-code .attr {
  color: #fbbf24;
}

.xml-code .value {
  color: #6ee7b7;
}

.xml-code .comment {
  color: #6b7280;
  font-style: italic;
}

/* --- XMLツリービュー --- */
.xml-tree {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.8;
}

.xml-tree-node {
  position: relative;
  padding-left: 1.5rem;
}

.xml-tree-node::before {
  content: "";
  position: absolute;
  left: 0.5rem;
  top: 0;
  bottom: 0;
  width: 1px;
  background-color: var(--color-border);
}

.xml-tree-node:last-child::before {
  height: 1rem;
}

.xml-tree-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
  border-radius: 4px;
  transition: background-color var(--transition-base);
  position: relative;
}

.xml-tree-label::before {
  content: "";
  position: absolute;
  left: -1rem;
  top: 50%;
  width: 1rem;
  height: 1px;
  background-color: var(--color-border);
}

.xml-tree-label:hover {
  background-color: rgba(124, 58, 237, 0.08);
}

.xml-tree-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.2rem;
  height: 1.2rem;
  border-radius: 3px;
  background-color: var(--color-primary-light);
  color: var(--color-white);
  font-size: 0.7rem;
  font-weight: bold;
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--transition-base);
}

.xml-tree-toggle.collapsed {
  background-color: var(--color-text-light);
}

.xml-tree-tag {
  color: var(--color-primary-light);
  font-weight: 600;
}

.xml-tree-attrs {
  color: var(--color-accent-dark);
  font-size: 0.8rem;
}

.xml-tree-desc {
  color: var(--color-text-light);
  font-size: 0.8rem;
  font-family: var(--font-family);
  margin-left: 0.5rem;
}

.xml-tree-children {
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.xml-tree-children.collapsed {
  max-height: 0 !important;
}

/* --- テーブル --- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.data-table thead {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: var(--color-white);
}

.data-table th {
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}

.data-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.data-table tbody tr:hover {
  background-color: rgba(124, 58, 237, 0.04);
}

.data-table tbody tr:nth-child(even) {
  background-color: rgba(245, 243, 255, 0.5);
}

.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--border-radius);
  box-shadow: var(--card-shadow);
}

/* --- バッジ --- */
.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  white-space: nowrap;
}

.badge-required {
  background-color: #fef2f2;
  color: #dc2626;
}

.badge-optional {
  background-color: #f0fdf4;
  color: #16a34a;
}

.badge-type {
  background-color: #eff6ff;
  color: #2563eb;
}

.badge-element {
  background-color: #f5f3ff;
  color: var(--color-primary);
  border: 1px solid rgba(124, 58, 237, 0.2);
}

/* --- 検索・フィルター --- */
.search-box {
  position: relative;
  max-width: 500px;
  margin: 0 auto var(--spacing-4);
}

.search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.75rem;
  font-size: 1rem;
  font-family: var(--font-family);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  outline: none;
  transition: all var(--transition-base);
  background-color: var(--color-white);
}

.search-input:focus {
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-light);
  font-size: 1.2rem;
  pointer-events: none;
}

.filter-tabs {
  display: flex;
  gap: var(--spacing-2);
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--spacing-4);
}

.filter-tab {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: 9999px;
  cursor: pointer;
  transition: all var(--transition-base);
  background-color: var(--color-white);
  color: var(--color-text-light);
  border: 1px solid var(--color-border);
}

.filter-tab:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

.filter-tab.active {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* --- アコーディオン --- */
.accordion {
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  margin-bottom: var(--spacing-3);
  background-color: var(--color-white);
}

.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem var(--spacing-4);
  cursor: pointer;
  transition: background-color var(--transition-base);
  font-weight: 600;
  color: var(--color-primary-dark);
}

.accordion-header:hover {
  background-color: rgba(124, 58, 237, 0.04);
}

.accordion-arrow {
  transition: transform var(--transition-base);
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.accordion.active .accordion-arrow {
  transform: rotate(180deg);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.accordion.active .accordion-body {
  max-height: 2000px;
}

.accordion-content {
  padding: 0 var(--spacing-4) var(--spacing-4);
}

/* --- ステップ / ガイド --- */
.guide-layout {
  display: flex;
  gap: var(--spacing-5);
}

.guide-sidebar {
  width: 280px;
  flex-shrink: 0;
  position: sticky;
  top: calc(var(--header-height) + var(--spacing-3));
  max-height: calc(100vh - var(--header-height) - var(--spacing-6));
  overflow-y: auto;
}

.guide-sidebar-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.guide-sidebar-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-base);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
}

.guide-sidebar-item:hover {
  border-color: var(--color-primary-light);
  background-color: rgba(124, 58, 237, 0.04);
}

.guide-sidebar-item.active {
  border-color: var(--color-primary);
  background-color: rgba(124, 58, 237, 0.08);
}

.guide-step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: 700;
  flex-shrink: 0;
}

.guide-sidebar-item.active .guide-step-num {
  background-color: var(--color-accent);
  color: var(--color-primary-dark);
}

.guide-sidebar-title {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
}

.guide-main {
  flex: 1;
  min-width: 0;
}

.guide-content {
  display: none;
  animation: fadeIn 0.3s ease;
}

.guide-content.active {
  display: block;
}

.guide-detail-list {
  list-style: none;
  margin: var(--spacing-3) 0;
}

.guide-detail-list li {
  padding: var(--spacing-2) 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--color-text);
  line-height: 1.6;
}

.guide-detail-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-primary-light);
}

.guide-tips {
  background-color: #fef3c7;
  border-left: 4px solid var(--color-accent);
  padding: var(--spacing-3) var(--spacing-4);
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  margin-top: var(--spacing-4);
  font-size: var(--font-size-sm);
}

.guide-tips::before {
  content: "TIPS: ";
  font-weight: 700;
  color: var(--color-accent-dark);
}

/* --- ビルダー --- */
.builder-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4);
}

.builder-form {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  padding: var(--spacing-4);
  border: 1px solid var(--color-border);
}

.builder-preview {
  position: relative;
}

.builder-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-3);
}

.form-group {
  margin-bottom: var(--spacing-4);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--spacing-2);
}

.form-input,
.form-select {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: var(--font-size-sm);
  font-family: var(--font-family);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  outline: none;
  transition: all var(--transition-base);
  background-color: var(--color-white);
}

.form-input:focus,
.form-select:focus {
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3);
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background-color: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
}

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

.copy-btn.copied {
  background-color: var(--color-success);
}

/* --- クイズ --- */
.quiz-container {
  max-width: 800px;
  margin: 0 auto;
}

.quiz-progress {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-4);
}

.quiz-progress-bar {
  flex: 1;
  height: 8px;
  background-color: var(--color-border);
  border-radius: 9999px;
  overflow: hidden;
}

.quiz-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 9999px;
  transition: width 0.5s ease;
}

.quiz-progress-text {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  white-space: nowrap;
}

.quiz-question-card {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  padding: var(--spacing-5);
  box-shadow: var(--card-shadow);
  border: 1px solid var(--color-border);
}

.quiz-question-num {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary-light);
  margin-bottom: var(--spacing-2);
}

.quiz-question-text {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--spacing-4);
  line-height: 1.5;
}

.quiz-choices {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.quiz-choice {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: var(--font-size-sm);
}

.quiz-choice:hover {
  border-color: var(--color-primary-light);
  background-color: rgba(124, 58, 237, 0.04);
}

.quiz-choice.selected {
  border-color: var(--color-primary);
  background-color: rgba(124, 58, 237, 0.08);
}

.quiz-choice.correct {
  border-color: var(--color-success);
  background-color: rgba(16, 185, 129, 0.08);
}

.quiz-choice.incorrect {
  border-color: var(--color-warning);
  background-color: rgba(239, 68, 68, 0.08);
}

.quiz-choice-marker {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background-color: var(--color-bg);
  font-weight: 700;
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  flex-shrink: 0;
}

.quiz-choice.selected .quiz-choice-marker {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.quiz-choice.correct .quiz-choice-marker {
  background-color: var(--color-success);
  color: var(--color-white);
}

.quiz-choice.incorrect .quiz-choice-marker {
  background-color: var(--color-warning);
  color: var(--color-white);
}

.quiz-explanation {
  margin-top: var(--spacing-4);
  padding: var(--spacing-3) var(--spacing-4);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  display: none;
}

.quiz-explanation.show {
  display: block;
}

.quiz-explanation.correct {
  background-color: rgba(16, 185, 129, 0.1);
  border-left: 4px solid var(--color-success);
}

.quiz-explanation.incorrect {
  background-color: rgba(239, 68, 68, 0.1);
  border-left: 4px solid var(--color-warning);
}

.quiz-nav {
  display: flex;
  justify-content: space-between;
  margin-top: var(--spacing-4);
}

.quiz-result {
  text-align: center;
  padding: var(--spacing-5);
}

.quiz-score {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-3);
}

.quiz-result-title {
  font-size: var(--font-size-2xl);
  color: var(--color-primary-dark);
  margin-bottom: var(--spacing-3);
}

.quiz-result-desc {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-3);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* --- フローダイアグラム --- */
.flow-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3);
  flex-wrap: wrap;
  padding: var(--spacing-4);
}

.flow-box {
  background-color: var(--color-white);
  border: 2px solid var(--color-primary-light);
  border-radius: var(--border-radius);
  padding: var(--spacing-3) var(--spacing-4);
  text-align: center;
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-primary-dark);
  min-width: 120px;
  box-shadow: var(--card-shadow);
}

.flow-box.highlight {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-white);
  border-color: var(--color-primary);
}

.flow-arrow {
  font-size: 1.5rem;
  color: var(--color-accent);
  font-weight: bold;
}

/* --- 用語集 --- */
.glossary-item {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  padding: var(--spacing-4);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary-light);
  margin-bottom: var(--spacing-3);
  transition: all var(--transition-base);
}

.glossary-item:hover {
  box-shadow: var(--card-shadow-hover);
}

.glossary-term {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: var(--spacing-1);
}

.glossary-reading {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-2);
}

.glossary-definition {
  font-size: var(--font-size-sm);
  line-height: 1.6;
  color: var(--color-text);
}

/* --- ツール比較 --- */
.tool-card {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  padding: var(--spacing-4);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.tool-card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.tool-name {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: var(--spacing-1);
}

.tool-vendor {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-3);
}

.tool-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-3);
}

.tool-feature-tag {
  padding: 0.2rem 0.6rem;
  background-color: var(--color-bg);
  color: var(--color-primary);
  font-size: 0.75rem;
  border-radius: 4px;
  font-weight: 500;
}

.tool-rating {
  display: flex;
  gap: 0.25rem;
  margin-bottom: var(--spacing-2);
}

.tool-star {
  color: var(--color-accent);
  font-size: 1rem;
}

.tool-star.empty {
  color: var(--color-border);
}

/* --- ページヘッダー --- */
.page-header {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: var(--color-white);
  padding: var(--spacing-6) 0;
  text-align: center;
}

.page-header h1 {
  color: var(--color-white);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-2);
}

.page-header p {
  color: rgba(255, 255, 255, 0.8);
  max-width: 700px;
  margin: 0 auto;
}

/* --- フッター --- */
.site-footer {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, #1a0533 100%);
  color: var(--color-white);
  padding: var(--spacing-6) 0 var(--spacing-3);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-5);
}

.footer-section h4 {
  color: var(--color-accent);
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-3);
}

.footer-section ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.footer-section a {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  transition: color var(--transition-base);
}

.footer-section a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-3);
  text-align: center;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.4);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-1);
}

/* --- フェードインアニメーション --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

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

/* --- 変数テーブル追加スタイル --- */
.var-table-container {
  margin-bottom: var(--spacing-4);
}

.var-dataset-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-white);
  padding: var(--spacing-3) var(--spacing-4);
  border-radius: var(--border-radius) var(--border-radius) 0 0;
  cursor: pointer;
}

.var-dataset-name {
  font-weight: 700;
  font-size: var(--font-size-lg);
}

.var-dataset-label {
  font-size: var(--font-size-sm);
  opacity: 0.8;
}

/* --- レスポンシブ --- */
@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero h1 {
    font-size: var(--font-size-3xl);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .builder-layout {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .section {
    padding: var(--spacing-8) 0;
  }

  .hero {
    padding: 5rem 0;
  }

  .hero h1 {
    font-size: var(--font-size-4xl);
  }
}

@media (min-width: 1024px) {
  .nav-menu {
    display: flex;
  }

  .hamburger {
    display: none;
  }

  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }

  .guide-layout {
    flex-direction: row;
  }

  .guide-sidebar {
    display: block;
  }
}

/* モバイル: ガイドサイドバー横並び */
@media (max-width: 1023px) {
  .guide-layout {
    flex-direction: column;
  }

  .guide-sidebar {
    width: 100%;
    position: static;
    max-height: none;
    overflow-y: visible;
  }

  .guide-sidebar-list {
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: var(--spacing-2);
    -webkit-overflow-scrolling: touch;
  }

  .guide-sidebar-item {
    flex-shrink: 0;
    min-width: 160px;
  }
}

/* テーブルレスポンシブ */
@media (max-width: 767px) {
  .data-table thead {
    display: none;
  }

  .data-table tr {
    display: block;
    margin-bottom: var(--spacing-3);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
  }

  .data-table td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 1rem;
    border-bottom: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
  }

  .data-table td::before {
    content: attr(data-label);
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-right: 1rem;
    flex-shrink: 0;
  }

  .data-table td:last-child {
    border-bottom: none;
  }
}