/* =============================================================================
   main.css — hugo-theme-shizuka
   モバイルファースト、1カラム、最大幅 720px
   配色モチーフ: 2000年前後のフリーペーパー／チャート誌（SLATE, CMJ 的な世界観）
   ============================================================================= */

:root {
  /* 紙・インク */
  --paper:       #f6efdd;
  --paper-alt:   #ece0c4;
  --ink:         #23201a;
  --ink-soft:    #5c5344;
  --ink-faint:   #948a76;
  --rule:        #d9cba9;
  --rule-strong: #c9b98d;

  /* アクセント（朱・からし） */
  --accent:      #b5482f;
  --accent-dark: #8f3a25;
  --accent-2:    #b8862a;
}

/* ---------------------------------------------------------------------------
   リセット & ベース
   --------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Hiragino Sans,
    "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  color: var(--ink);
  background-color: var(--paper);
  /* ごく薄い紙の粒状ノイズ（外部リソースなしの inline SVG フィルタ） */
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/></svg>");
  line-height: 1.8;
}

/* ---------------------------------------------------------------------------
   レイアウト
   --------------------------------------------------------------------------- */
.site-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1rem;
  overflow-x: hidden;
}

main {
  flex: 1;
  padding: 2rem 0;
}

/* ---------------------------------------------------------------------------
   ヘッダー
   --------------------------------------------------------------------------- */
.site-header {
  border-bottom: 3px double var(--rule-strong);
  padding: 0.75rem 0;
}

.site-header .container {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.site-title {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.site-title a {
  color: var(--ink);
  text-decoration: none;
}

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

/* ナビゲーション */
.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.85rem;
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* ---------------------------------------------------------------------------
   フッター
   --------------------------------------------------------------------------- */
.site-footer {
  border-top: 3px double var(--rule-strong);
  padding: 1.25rem 0;
  font-size: 0.8rem;
  color: var(--ink-faint);
  text-align: center;
}

.site-footer a {
  color: var(--ink-faint);
}

/* ---------------------------------------------------------------------------
   見出し・本文
   --------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.4;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

h1 { font-size: 1.6rem; }
h2 { font-size: 1.3rem; }
h3 { font-size: 1.1rem; }

p {
  margin: 0 0 1rem;
}

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

a:hover {
  text-decoration: underline;
}

/* ---------------------------------------------------------------------------
   記事ヘッダー（single / list共通）
   --------------------------------------------------------------------------- */
.post-header {
  margin-bottom: 1.5rem;
}

.post-title {
  font-size: 1.25rem;
  margin-top: 0;
  margin-bottom: 0.25rem;
}

h1.post-title {
  font-size: 1.5rem;
}

.post-title a {
  color: var(--ink);
  text-decoration: none;
}

.post-title a:hover {
  color: var(--accent);
}

.post-meta {
  font-size: 0.8rem;
  color: var(--ink-faint);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.post-meta time {
  white-space: nowrap;
}

/* ---------------------------------------------------------------------------
   タグ（チケット半券風）
   --------------------------------------------------------------------------- */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.tag-item a {
  display: inline-block;
  background: var(--paper-alt);
  color: var(--ink-soft);
  border: 1px dashed var(--rule-strong);
  border-radius: 2px;
  padding: 0.1em 0.55em;
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.tag-item a::before {
  content: "#";
  color: var(--ink-faint);
}

.tag-item a:hover {
  background: var(--paper);
  border-color: var(--accent);
  color: var(--accent);
}

/* ---------------------------------------------------------------------------
   記事一覧（list ページ）
   --------------------------------------------------------------------------- */
.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.post-list-item {
  padding: 1rem 0;
  border-bottom: 1px dashed var(--rule);
}

.post-list-item:first-child {
  padding-top: 0;
}

.post-list-item:last-child {
  border-bottom: none;
}

/* ---------------------------------------------------------------------------
   記事本文（single ページ）
   --------------------------------------------------------------------------- */
.post-content {
  margin-top: 1.5rem;
  overflow-wrap: break-word;
  word-break: break-word;
}

.post-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.5rem auto;
}

.post-content ul,
.post-content ol {
  margin: 0 0 1rem 1.5rem;
}

.post-content blockquote {
  margin: 1.5rem 0;
  padding: 0.5rem 1rem;
  border-left: 3px solid var(--rule-strong);
  color: var(--ink-soft);
}

.post-content blockquote p {
  margin: 0;
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

.post-content th,
.post-content td {
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--rule);
  text-align: left;
}

.post-content th {
  background: var(--paper-alt);
  font-weight: 700;
}

.post-content hr {
  border: none;
  border-top: 1px dashed var(--rule);
  margin: 2rem 0;
}

/* コードブロック */
.post-content pre {
  background: var(--paper-alt);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 1rem;
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.6;
}

.post-content code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.875em;
}

.post-content p code,
.post-content li code {
  background: var(--paper-alt);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

/* Chroma（Hugo 標準ハイライト）のコンテナ調整 */
.post-content .highlight {
  margin: 1.5rem 0;
}

.post-content .highlight pre {
  margin: 0;
}

/* ---------------------------------------------------------------------------
   ページタイトル（セクション・タクソノミー共通）
   --------------------------------------------------------------------------- */
.page-title {
  font-size: 1.5rem;
  margin-top: 0;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 3px double var(--rule-strong);
}

.page-title::before {
  content: "■";
  display: inline-block;
  margin-right: 0.4em;
  font-size: 0.7em;
  color: var(--accent);
}

/* ---------------------------------------------------------------------------
   タクソノミー（タグ一覧ページ）
   --------------------------------------------------------------------------- */
.taxonomy-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.taxonomy-list li a {
  display: inline-block;
  background: var(--paper-alt);
  color: var(--ink-soft);
  border: 1px dashed var(--rule-strong);
  border-radius: 2px;
  padding: 0.2em 0.75em;
  font-size: 0.875rem;
  text-decoration: none;
}

.taxonomy-list li a:hover {
  background: var(--paper);
  border-color: var(--accent);
  color: var(--accent);
}

.taxonomy-count {
  font-size: 0.75em;
  color: var(--ink-faint);
  margin-left: 0.25em;
}

/* ---------------------------------------------------------------------------
   ページネーション
   --------------------------------------------------------------------------- */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2rem;
  font-size: 0.875rem;
}

.pagination a,
.pagination span {
  display: inline-block;
  padding: 0.3em 0.75em;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  color: var(--ink-soft);
  text-decoration: none;
}

.pagination a:hover {
  background: var(--paper-alt);
  color: var(--ink);
}

.pagination .active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--paper);
}

.pagination .disabled {
  color: var(--ink-faint);
  opacity: 0.5;
  pointer-events: none;
}

/* ---------------------------------------------------------------------------
   セクションバッジ（ジャンルラベル、スタンプ風）
   --------------------------------------------------------------------------- */
.section-badge {
  display: inline-block;
  padding: 0.1em 0.55em;
  border-radius: 2px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-decoration: none;
  white-space: nowrap;
  background: var(--paper-alt);
  color: var(--ink-soft);
}

.section-badge:hover {
  text-decoration: none;
  filter: brightness(0.95);
}

/* セクションごとの色（従来のパステルトーンを維持） */
.section-badge--diary       { background: #dbeafe; color: #1e40af; }
.section-badge--music       { background: #fde68a; color: #92400e; }
.section-badge--disc-review { background: #fce7f3; color: #9d174d; }
.section-badge--ds          { background: #d1fae5; color: #065f46; }
.section-badge--programming { background: #ede9fe; color: #5b21b6; }
.section-badge--natsumen    { background: #ffedd5; color: #9a3412; }
.section-badge--boat        { background: #e0f2fe; color: #075985; }

/* ---------------------------------------------------------------------------
   ホームページ
   --------------------------------------------------------------------------- */
.home-description {
  color: var(--ink-soft);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.home-section {
  margin-bottom: 2.5rem;
}

.home-section-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 0.75rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px dashed var(--rule-strong);
}

.home-section-title::before {
  content: "■";
  display: inline-block;
  margin-right: 0.4em;
  font-size: 0.7em;
  color: var(--accent);
}

.home-section-title a {
  color: inherit;
  text-decoration: none;
}

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

/* ---------------------------------------------------------------------------
   検索
   --------------------------------------------------------------------------- */
.search-form {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.search-input {
  flex: 1;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--rule-strong);
  border-radius: 3px;
  background: #fff;
  font-size: 1rem;
  font-family: inherit;
  color: var(--ink);
  outline: none;
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(181, 72, 47, 0.15);
}

.search-button {
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--paper);
  border: none;
  border-radius: 3px;
  font-size: 0.9rem;
  font-family: inherit;
  cursor: pointer;
}

.search-button:hover {
  background: var(--accent-dark);
}

#search-results {
  list-style: none;
  margin: 0;
  padding: 0;
}

#search-results li {
  padding: 0.75rem 0;
  border-bottom: 1px dashed var(--rule);
}

#search-results li:last-child {
  border-bottom: none;
}

#search-results .result-title {
  font-weight: 700;
}

#search-results .result-meta {
  font-size: 0.8rem;
  color: var(--ink-faint);
  margin-top: 0.15rem;
}

/* ---------------------------------------------------------------------------
   動画埋め込み（YouTube 等）
   --------------------------------------------------------------------------- */
.video-embed {
  margin: 1.5rem 0;
}

.video-embed__ratio {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  border: 1px solid var(--rule-strong);
}

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

/* ---------------------------------------------------------------------------
   レスポンシブ（タブレット以上）
   --------------------------------------------------------------------------- */
@media (min-width: 600px) {
  .site-header .container {
    flex-direction: row;
    align-items: baseline;
    gap: 1.5rem;
  }

  .site-title {
    flex-shrink: 0;
  }
}