/* ------------------------------------------------------------------
   スクリプト言語演習 共通スタイル
   フラットデザイン: 角丸なし・影なし・グラデーションなし。
   面は塗り、区切りはヘアラインか太い実線のみ。
   ------------------------------------------------------------------ */

@font-face {
    font-family: 'IBM Plex Sans JP';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('./fonts/IBMPlexSansJP-Regular.ttf') format('truetype');
}
@font-face {
    font-family: 'IBM Plex Sans JP';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('./fonts/IBMPlexSansJP-SemiBold.ttf') format('truetype');
}
@font-face {
    font-family: 'IBM Plex Sans JP';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('./fonts/IBMPlexSansJP-Bold.ttf') format('truetype');
}

:root {
    --font: 'IBM Plex Sans JP', 'Hiragino Sans', 'Noto Sans CJK JP', sans-serif;
    --mono: 'IBM Plex Mono', 'SFMono-Regular', Menlo, monospace;
    --ink: #14140f;
    --paper: #faf8f4;
    --rule: #c4bcab;
    --muted: #4f4a40;
    --accent: #a02b0c;   /* 朱 : 強調・リンク */
    --accent-bg: #f7ded2;
    --teal: #0a544c;     /* 青緑 : 補助 */
    --teal-bg: #d5e8e5;
    --sand: #6d5410;     /* 黄土 : 注意 */
    --sand-bg: #f6e9c6;
}

html, body {
    margin: 0;
    width: 100%;
    height: 100%;
    background: var(--paper);
}

body {
    color: var(--ink);
    font-family: var(--font) !important;
}

.reveal {
    height: 100%;
    background: var(--paper);
}

#source {
    display: none;
}

#source.load-error {
    display: block;
}

.reveal .slides {
    background: var(--paper);
}

.reveal .slide-content {
    box-sizing: border-box;
    padding: 42px 58px 46px;
    overflow: hidden;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font) !important;
    font-size: 36px;
    text-align: left;
}

.reveal .slide-content > .slide-fit {
    width: 100%;
    transform-origin: top center;
}

.reveal .slide-content > .slide-fit > :first-child { margin-top: 0; }

.reveal .progress { background: var(--accent); }

/* 16:9。印刷も同じ比にする */
@page { size: 13.333in 7.5in; margin: 0; }

/* 右下: 番号を矢印の左に置き、重ねない */
.reveal .controls {
    right: 14px;
    bottom: 12px;
    color: var(--muted);
}
.reveal .slide-number {
    right: 118px;
    bottom: 20px;
    left: auto;
    background: transparent;
    color: var(--muted);
    font-family: var(--mono);
    font-size: 0.72em;
    padding: 0;
}

.load-error {
    display: block;
    box-sizing: border-box;
    width: 100%;
    height: 100%;
    padding: 2em;
    border: none;
    background: var(--paper);
    color: var(--accent);
    font-family: var(--font);
    font-size: 1.5rem;
    white-space: pre-wrap;
}

.reveal .slide-content img[src*="diagrams/"] {
    display: block;
    width: 100%;
    height: auto;
    margin: 20px auto;
}

.reveal .slide-content { letter-spacing: 0.01em; }

/* ---- 見出し ---------------------------------------------------- */

.reveal .slide-content h1, .reveal .slide-content h2, .reveal .slide-content h3, .reveal .slide-content h4 {
    text-transform: none;
    letter-spacing: -0.01em;
    line-height: 1.3;
}
.reveal .slide-content h1 { font-size: 2.6em; }
.reveal .slide-content h2 {
    font-size: 2em;
    border-bottom: 3px solid var(--ink);
    display: inline-block;
    padding-bottom: 0.15em;
    margin-bottom: 0.35em;
    color: var(--ink);
}
.reveal .slide-content h3 {
    font-size: 1.15em;
    font-weight: 600;
    color: var(--accent);
    margin: 0.1em 0 0.45em;
}
.reveal .slide-content h4 { font-size: 0.95em; }

.reveal .section-label {
    font-family: var(--mono);
    font-size: 0.58em;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.04em;
    margin: 0 0 0.85em;
}

/* セクション扉: 数字を大きく見せる */
.reveal .slide-content.chapter { text-align: left; }
.reveal .slide-content.chapter .num {
    font-family: var(--mono);
    font-size: 4em;
    font-weight: 600;
    color: var(--rule);
    line-height: 1;
    display: block;
}
.reveal .slide-content.chapter h2 { border: none; font-size: 2.3em; margin-top: 0.1em; }

/* ---- 本文 ------------------------------------------------------ */

.reveal .slide-content p, .reveal .slide-content li { line-height: 1.6; }
.reveal .slide-content ul,
.reveal .slide-content ol {
  display: block;
  margin: 0.4em 0 0.8em;
  padding-left: 1.4em;
  text-align: left;
}
.reveal .slide-content ul { list-style-type: disc; }
.reveal .slide-content ol { list-style-type: decimal; }
.reveal .slide-content ul ul { list-style-type: circle; margin: 0.2em 0; }
.reveal .slide-content li {
  display: list-item;
  margin-bottom: 0.35em;
}
.reveal .slide-content strong { font-weight: 700; color: var(--accent); }
.reveal .slide-content em { font-style: normal; background: var(--sand-bg); padding: 0 0.2em; }

.reveal .slide-content .note {
    font-size: 0.74em;
    color: var(--muted);
    line-height: 1.6;
}
.reveal .slide-content .small { font-size: 0.8em; }
.reveal .slide-content .lead { font-size: 1.15em; line-height: 1.6; }

/* ---- コード ---------------------------------------------------- */

.reveal .slide-content pre {
    width: 100%;
    font-size: 0.7em;
    box-shadow: none;
    margin: 0.6em 0;
}
.reveal .slide-content pre code {
    max-height: 640px;
    padding: 18px 22px;
    border-radius: 0;
    line-height: 1.5;
    background: #201f1d;
}
.reveal .slide-content code {
    font-family: var(--mono);
    font-size: 0.95em;
}
.reveal .slide-content :not(pre) > code {
    background: #eae5db;
    padding: 0.08em 0.32em;
    color: #43403a;
}

/* 出力例: コードとは別の見た目にする */
.reveal .slide-content pre.output code {
    background: transparent;
    color: var(--muted);
    border-left: 3px solid var(--rule);
    padding-left: 16px;
}

.reveal .slide-content pre code.language-text {
    background: transparent !important;
    color: var(--muted) !important;
    border-left: 3px solid var(--rule);
    padding-left: 16px;
}

/* ---- 表 -------------------------------------------------------- */

.reveal .slide-content table {
    font-size: 0.72em;
    margin: 0.5em auto;
    border-collapse: collapse;
    width: 100%;
}
.reveal .slide-content th, .reveal .slide-content td {
    padding: 0.5em 0.8em;
    border: none;
    border-bottom: 1px solid var(--rule);
    text-align: left;
    vertical-align: top;
}
.reveal .slide-content th {
    background: var(--ink);
    color: var(--paper);
    font-weight: 600;
    border-bottom: none;
}
.reveal .slide-content td.ok, .reveal .slide-content tr.ok td { background: var(--teal-bg); }
.reveal .slide-content td.ng, .reveal .slide-content tr.ng td { background: var(--accent-bg); }

/* ---- 注記ブロック ---------------------------------------------- */

.reveal .slide-content .highlight-box,
.reveal .slide-content .warn-box,
.reveal .slide-content .key-box {
    text-align: left;
    padding: 14px 18px;
    margin: 16px 0;
    font-size: 0.85em;
    line-height: 1.55;
    border-radius: 0;
}
.reveal .slide-content .highlight-box { background: var(--teal-bg); border-left: 10px solid var(--teal); }
.reveal .slide-content .warn-box      { background: var(--sand-bg); border-left: 10px solid var(--sand); }
.reveal .slide-content .key-box       { background: var(--ink); color: var(--paper); border-left: 10px solid var(--accent); }
.reveal .slide-content .key-box strong { color: #ffb59c; }
.reveal .slide-content .key-box code { background: #34322e; color: #e8e2d6; }
.reveal .slide-content .highlight-box ul,
.reveal .slide-content .warn-box ul,
.reveal .slide-content .key-box ul,
.reveal .slide-content ul.highlight-box,
.reveal .slide-content ul.warn-box,
.reveal .slide-content ul.key-box,
.reveal .slide-content .highlight-box ol,
.reveal .slide-content .warn-box ol,
.reveal .slide-content .key-box ol,
.reveal .slide-content ol.highlight-box,
.reveal .slide-content ol.warn-box,
.reveal .slide-content ol.key-box {
    list-style-position: inside;
    padding-left: 0.9em;
    margin: 0.2em 0;
}
.reveal .slide-content .key-box li { color: inherit; }

/* ---- 段組み ---------------------------------------------------- */

.reveal .slide-content .two-column { display: flex; gap: 28px; justify-content: center; align-items: flex-start; }
.reveal .slide-content .two-column > div { flex: 1; min-width: 0; }
.reveal .slide-content .left-column,
.reveal .slide-content .right-column {
    display: inline-block;
    width: 48%;
    vertical-align: top;
    box-sizing: border-box;
}
.reveal .slide-content .left-column { margin-right: 2%; }
.reveal .slide-content .cols-3 { display: flex; gap: 20px; justify-content: center; align-items: flex-start; }
.reveal .slide-content .cols-3 > div { flex: 1; min-width: 0; }

/* ---- タイトルスライド ------------------------------------------ */

.reveal .slide-content.title-slide { text-align: left; }
.reveal .slide-content.title-slide h1 {
    border-bottom: 6px solid var(--accent);
    display: inline-block;
    padding-bottom: 0.15em;
}
.reveal .slide-content.title-slide .kicker {
    font-family: var(--mono);
    font-size: 0.68em;
    letter-spacing: 0.18em;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 0.4em;
}
.reveal .slide-content.title-slide h3 {
    color: var(--muted);
    font-weight: 400;
    font-size: 1.15em;
    border: none;
    display: block;
    margin-bottom: 0.7em;
}

/* ---- コードハイライト ------------------------------------------ */
.reveal .slide-content pre code.hljs {
    display: block;
    color: #f4efe7 !important;
    background: #201f1d !important;
    font-family: var(--mono) !important;
}
.reveal .slide-content .hljs {
    color: #f4efe7 !important;
    background: #201f1d !important;
}
.reveal .slide-content .hljs-keyword,
.reveal .slide-content .hljs-selector-tag,
.reveal .slide-content .hljs-literal { color: #ff9f8f !important; }
.reveal .slide-content .hljs-string,
.reveal .slide-content .hljs-doctag,
.reveal .slide-content .hljs-regexp { color: #b7e3b0 !important; }
.reveal .slide-content .hljs-number,
.reveal .slide-content .hljs-symbol,
.reveal .slide-content .hljs-bullet { color: #e7c77a !important; }
.reveal .slide-content .hljs-title,
.reveal .slide-content .hljs-title.function_,
.reveal .slide-content .hljs-section { color: #8fd8cf !important; }
.reveal .slide-content .hljs-built_in,
.reveal .slide-content .hljs-type { color: #f0b76e !important; }
.reveal .slide-content .hljs-variable,
.reveal .slide-content .hljs-params { color: #e5c07b !important; }
.reveal .slide-content .hljs-comment,
.reveal .slide-content .hljs-quote { color: #a39a8c !important; font-style: italic; }
.reveal .slide-content .hljs-meta,
.reveal .slide-content .hljs-punctuation { color: #c9b7a3 !important; }
.reveal .slide-content .hljs-ln-numbers { color: #665c54 !important; }

/* 濃い背景の上の inline code は反転させる */
.reveal .slide-content th code { background: #34322e; color: #e8e2d6; }

/* ---- 詰めの調整 ------------------------------------------------ */
/* 16:9 の枠に収めるための微調整 */
.reveal .slide-content .highlight-box,
.reveal .slide-content .warn-box,
.reveal .slide-content .key-box { margin: 12px 0; padding: 12px 17px; }

/* 段組みの中のコードは1段細くする */
.reveal .slide-content .two-column pre,
.reveal .slide-content .left-column pre,
.reveal .slide-content .right-column pre,
.reveal .slide-content .cols-3 pre { font-size: 0.62em; margin: 0.3em 0; }
.reveal .slide-content .two-column h4,
.reveal .slide-content .left-column h4,
.reveal .slide-content .right-column h4,
.reveal .slide-content .cols-3 h4 { margin: 0 0 0.4em; }