@import url("https://fonts.googleapis.com/css2?family=M+PLUS+Rounded+1c&display=swap");

:root {
  --background: #222129;
  --foreground: #eceae5;
  --accent: #ffa86a;
}

* {
  --color-gray: #808080;

  /* themeColorを切り替えたらここも切り替える */
  /* orange */
  --color-theme: #ffa86a;
  /* blue */
  /* --color-theme: #23B0FFB3;  */

  -webkit-font-feature-settings:
    "liga" on,
    "calt" on;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-wrap: break-word;
  box-sizing: border-box;
  font-family: "M PLUS Rounded 1c", sans-serif;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  text-transform: none;
}

/* Markdown記号の表示 (h1は記事タイトルに使用されるため除外) */
h2::before,
h3::before,
h4::before,
h5::before,
h6::before {
  letter-spacing: -0.1em; /* #同士の間隔を狭める */
  color: var(--color-gray);
  margin-right: 6px;
}

h2::before {
  content: "##";
}
h3::before {
  content: "###";
}
h4::before {
  content: "####";
}
h5::before {
  content: "#####";
}
h6::before {
  content: "######";
}

html,
body {
  /* padding: 15px; */
  max-width: 1200px;
  margin: 0;
  margin: 0 auto;
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    Segoe UI,
    Roboto,
    Oxygen,
    Ubuntu,
    Cantarell,
    Fira Sans,
    Droid Sans,
    Helvetica Neue,
    sans-serif;
}

a {
  color: var(--color-theme);
  text-decoration: none;
}

/* 記事末尾の「次の記事ボタン」「前の記事ボタン」のスタイル */
.button.next,
.button.previous {
  border: 0;
  max-width: 100%;
}

.button a {
  background-color: var(--color-gray);
  color: white;
}

/* posts_pagination用のスタイル（全デバイス） */
.pagination__buttons {
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

/* 長いテキストを3行まで表示し、それ以降は...で省略 */
.pagination__buttons a.button.inline {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: normal;
  max-width: 100%;
  line-height: 1.5;
  text-align: center;
}

code {
  background-color: rgba(99, 110, 123, 0.4);
  border-radius: 8px;
  padding: 0 8px;
}

img {
  max-width: 100%;
  max-height: 600px;
  margin: 0;
}

/* 画像キャプションのスタイル */
figure.image-with-caption {
  margin: 20px 0;
  text-align: center;
}

figure.image-with-caption img {
  display: block;
  margin: 0 auto;
  border: none;
}

figure.image-with-caption figcaption {
  font-size: 0.9em;
  color: var(--color-gray);
  font-style: italic;
  background: transparent;
  border-radius: 0;
}

/* 動画のレスポンシブ対応 */
figure.video {
  width: 100%;
  max-width: 100%;
  margin: 20px 0;
}

figure.video video {
  width: 100%;
  height: auto;
  display: block;
}

h2,
h3,
h4,
h5,
h6 {
  margin-top: 20px;
  margin-bottom: 0px;
}

h2 {
  border-bottom: solid 2px var(--color-gray);
  padding-bottom: 4px;
  margin-bottom: 10px;
}

h3 {
  padding-bottom: 4px;
}

p {
  margin: 10px 0;
}

.post-cover,
a.read-more {
  display: none;
}

p > img {
  border: none;
  display: block;
  margin: 0 auto;
}

th,
td {
  border: 2px solid var(--accent);
}

article.post > div.post-meta {
  margin-top: 8px;
}

article.on-list > .post-content,
article.on-list > .post-title::after {
  display: none;
}

article.on-list > .post-title {
  padding-bottom: 0;
  border: none;
}

article.on-list {
  margin: 24px auto;
  padding: 0;
}

.headings--one-size h1:not(first-child),
.headings--one-size h2:not(first-child),
.headings--one-size h3:not(first-child),
.headings--one-size h4:not(first-child),
.headings--one-size h5:not(first-child),
.headings--one-size h6:not(first-child) {
  margin-top: 20px;
}

.pagination__title {
  margin: 20px 0 20px;
}

ul {
  margin-top: 10px;
  margin-bottom: 10px;
}

ul ul {
  margin-bottom: 0px;
}

ol {
  margin-top: 10px;
  margin-bottom: 10px;
}

.post ol > li:not(:empty)::before {
  content: none;
}

ol ol {
  margin-bottom: 0px;
}

blockquote {
  position: relative;
  border-left: 2px solid var(--color-gray);
  border-top: none;
  border-bottom: none;
  margin: 0;
  padding: 10px 25px;
  color: var(--color-gray);
  margin: 20px 0;
}

blockquote::before {
  display: none;
}

/* 埋め込みコンテンツ（Google Slides, Speaker Deck, Docswell） */
.embed-container {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  height: 0;
  overflow: hidden;
  max-width: 100%;
  margin: 24px 0;
  border-radius: 8px;
}

.embed-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* ブログカード */
.blogcard {
  margin: 24px 0;
  border-radius: 8px;
  overflow: hidden;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.blogcard.loading .blogcard-thumbnail-placeholder {
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.blogcard:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 168, 106, 0.2);
}

.blogcard-link {
  display: flex;
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  background-color: rgba(99, 110, 123, 0.2);
  transition: background-color 0.2s ease;
}

.blogcard-link:hover {
  background-color: rgba(99, 110, 123, 0.3);
}

.blogcard-thumbnail {
  flex-shrink: 0;
  width: 240px;
  height: 144px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(99, 110, 123, 0.4);
  overflow: hidden;
}

.blogcard-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: none;
  margin: 0;
}

.blogcard-thumbnail-placeholder {
  color: var(--color-gray);
}

.blogcard-thumbnail-placeholder svg {
  width: 48px;
  height: 48px;
}

.blogcard-content {
  flex: 1;
  padding: 16px 16px 8px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.blogcard-title {
  font-size: 16px;
  font-weight: bold;
  color: var(--foreground);
  margin-bottom: 8px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.blogcard-description {
  font-size: 14px;
  color: var(--color-gray);
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.blogcard-url {
  font-size: 12px;
  color: var(--accent);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}



/* モバイルでもデスクトップメニューを表示する */
@media (max-width: 684px) {
  /* デスクトップメニューを表示 */
  .menu--desktop {
    display: flex !important;
  }

  /* モバイルメニューのトリガーボタンを非表示 */
  .menu--mobile .menu__trigger {
    display: none !important;
  }

  /* PC表示と同じように横並びにする */
  .navigation-menu__inner {
    flex-direction: row !important;
    flex-wrap: wrap !important;
  }

  .navigation-menu__inner > li:not(:last-of-type) {
    margin-right: 20px !important;
  }

  /* 上下の要素との距離を均等にする */
  .navigation-menu {
    margin: 20px 0 0 !important;
  }
}

/* Table of Contents Styles */

/* Sidebar TOC: Desktop only (sticky on the right) */
/* Show sidebar TOC for screens 1200px and wider */
@media (min-width: 1200px) {
  .table-of-contents-sidebar {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 280px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    padding: 20px;
    background-color: rgba(99, 110, 123, 0.1);
    border-radius: 8px;
    border: 1px solid color-mix(in srgb, var(--foreground) 20%, transparent);
  }

  .table-of-contents-sidebar h2 {
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 1.1rem;
    border-bottom: 2px solid var(--color-gray);
    padding-bottom: 8px;
  }

  .table-of-contents-sidebar nav ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
  }

  /* Nested lists for heading levels (h3, h4, etc.) */
  .table-of-contents-sidebar nav ul ul {
    padding-left: 16px;
  }

  .table-of-contents-sidebar nav ul li {
    margin: 8px 0;
  }

  .table-of-contents-sidebar nav ul li::before {
    display: none;
  }

  .table-of-contents-sidebar nav a {
    display: block;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
    color: var(--foreground);
    font-size: 0.9rem;
    line-height: 1.4;
  }

  .table-of-contents-sidebar nav a:hover {
    background-color: rgba(255, 168, 106, 0.15);
  }

  /* Add heading level indicators (##, ###, etc.) based on nesting */
  .table-of-contents-sidebar nav > ul > li > a::before {
    content: "## ";
    letter-spacing: -0.1em;
    color: var(--color-gray);
    margin-right: 6px;
  }

  .table-of-contents-sidebar nav > ul > li > ul > li > a::before {
    content: "### ";
    letter-spacing: -0.1em;
    color: var(--color-gray);
    margin-right: 6px;
  }

  .table-of-contents-sidebar nav > ul > li > ul > li > ul > li > a::before {
    content: "#### ";
    letter-spacing: -0.1em;
    color: var(--color-gray);
    margin-right: 6px;
  }

  .table-of-contents-sidebar nav > ul > li > ul > li > ul > li > ul > li > a::before {
    content: "##### ";
    letter-spacing: -0.1em;
    color: var(--color-gray);
    margin-right: 6px;
  }

  .table-of-contents-sidebar nav > ul > li > ul > li > ul > li > ul > li > ul > li > a::before {
    content: "###### ";
    letter-spacing: -0.1em;
    color: var(--color-gray);
    margin-right: 6px;
  }

  .table-of-contents-sidebar nav a.toc-active {
    background-color: var(--accent);
    color: var(--background);
    font-weight: bold;
  }

  .table-of-contents-sidebar nav a.toc-active::before {
    color: var(--background);
  }

  /* Hide mobile button on desktop with sidebar */
  .toc-mobile-button {
    display: none;
  }
}

/* Mobile/Narrower Desktop: Floating button and overlay TOC */
@media (max-width: 1199px) {
  /* Show mobile button */
  .toc-mobile-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: var(--accent);
    border: none;
    color: var(--background);
    cursor: pointer;
    z-index: 999;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
  }

  .toc-mobile-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
  }

  .toc-mobile-button svg {
    width: 24px;
    height: 24px;
  }

  /* Sidebar TOC becomes overlay on narrow screens */
  .table-of-contents-sidebar {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    overflow-y: auto;
    padding: 60px 20px 20px;
    background-color: var(--background);
    border-left: 1px solid color-mix(in srgb, var(--foreground) 20%, transparent);
    z-index: 998;
    transition: right 0.3s ease;
  }

  .table-of-contents-sidebar.toc-open {
    right: 0;
  }

  .table-of-contents-sidebar h2 {
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 1.1rem;
    border-bottom: 2px solid var(--color-gray);
    padding-bottom: 8px;
  }

  .table-of-contents-sidebar nav ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
  }

  .table-of-contents-sidebar nav ul ul {
    padding-left: 16px;
  }

  .table-of-contents-sidebar nav ul li {
    margin: 8px 0;
  }

  .table-of-contents-sidebar nav ul li::before {
    display: none;
  }

  .table-of-contents-sidebar nav a {
    display: block;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
    color: var(--foreground);
    font-size: 0.9rem;
    line-height: 1.4;
  }

  .table-of-contents-sidebar nav a:hover {
    background-color: rgba(255, 168, 106, 0.15);
  }

  /* Add heading level indicators (##, ###, etc.) */
  .table-of-contents-sidebar nav > ul > li > a::before {
    content: "## ";
    letter-spacing: -0.1em;
    color: var(--color-gray);
    margin-right: 6px;
  }

  .table-of-contents-sidebar nav > ul > li > ul > li > a::before {
    content: "### ";
    letter-spacing: -0.1em;
    color: var(--color-gray);
    margin-right: 6px;
  }

  .table-of-contents-sidebar nav > ul > li > ul > li > ul > li > a::before {
    content: "#### ";
    letter-spacing: -0.1em;
    color: var(--color-gray);
    margin-right: 6px;
  }

  .table-of-contents-sidebar nav > ul > li > ul > li > ul > li > ul > li > a::before {
    content: "##### ";
    letter-spacing: -0.1em;
    color: var(--color-gray);
    margin-right: 6px;
  }

  .table-of-contents-sidebar nav > ul > li > ul > li > ul > li > ul > li > ul > li > a::before {
    content: "###### ";
    letter-spacing: -0.1em;
    color: var(--color-gray);
    margin-right: 6px;
  }

  .table-of-contents-sidebar nav a.toc-active {
    background-color: var(--accent);
    color: var(--background);
    font-weight: bold;
  }

  .table-of-contents-sidebar nav a.toc-active::before {
    color: var(--background);
  }

  /* Overlay backdrop */
  .toc-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 997;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }

  .toc-overlay.toc-open {
    opacity: 1;
    pointer-events: auto;
  }
}