/* mImageViewer マニュアル 共通スタイル */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --pink:       #d63384;
  --pink-light: #ff60c0;
  --pink-pale:  #ffe0ec;
  --pink-bg:    #fff5f9;
  --accent:     #c0255a;
  --text:       #2c2c2c;
  --text-sub:   #555;
  --border:     #e8e8e8;
  --sidebar-w:  220px;
  --content-w:  740px;
}

html { font-size: 15px; scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial,
               "游ゴシック体", YuGothic, "Yu Gothic", "メイリオ", Meiryo, sans-serif;
  background: #f4f4f6;
  color: var(--text);
  line-height: 1.9;
  min-height: 100vh;
}

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

/* ── Header ─────────────────────────────────── */
.site-header {
  background: #fff;
  border-bottom: 2px solid var(--pink-pale);
  padding: 0 1.5rem;
  height: 52px;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
.site-header .logo {
  font-size: 1rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--pink-light), var(--pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}
.site-header .breadcrumb {
  font-size: 0.82rem;
  color: #888;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex: 1;
}
.site-header .breadcrumb a { color: #888; }
.site-header .breadcrumb a:hover { color: var(--pink); text-decoration: none; }
.site-header .breadcrumb .sep { color: #ccc; }

/* ── Layout ─────────────────────────────────── */
.layout {
  display: flex;
  max-width: calc(var(--sidebar-w) + var(--content-w) + 5rem);
  margin: 0 auto;
  min-height: calc(100vh - 52px);
}

/* ── Sidebar ─────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: #fff;
  border-right: 1px solid var(--border);
  padding: 1.75rem 0 3rem;
  position: sticky;
  top: 52px;
  height: calc(100vh - 52px);
  overflow-y: auto;
}
.sidebar-section {
  margin-bottom: 1.5rem;
}
.sidebar-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #aaa;
  text-transform: uppercase;
  padding: 0 1.25rem;
  margin-bottom: 0.3rem;
}
.sidebar nav a {
  display: block;
  padding: 0.38rem 1.25rem;
  font-size: 0.875rem;
  color: var(--text-sub);
  border-left: 3px solid transparent;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.sidebar nav a:hover {
  background: var(--pink-bg);
  color: var(--pink);
  text-decoration: none;
  border-left-color: var(--pink-pale);
}
.sidebar nav a.active {
  color: var(--pink);
  font-weight: 600;
  border-left-color: var(--pink);
  background: var(--pink-bg);
}

/* ── Main content ────────────────────────────── */
.content {
  flex: 1;
  min-width: 0;
  padding: 2.5rem 2.5rem 4rem;
  background: #fff;
  max-width: var(--content-w);
}

/* ── Page title ──────────────────────────────── */
.page-title {
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.3rem;
  line-height: 1.3;
}
.page-desc {
  color: var(--text-sub);
  font-size: 0.95rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

/* ── Headings ────────────────────────────────── */
h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  margin: 2.5rem 0 0.75rem;
  padding-left: 0.75rem;
  border-left: 4px solid var(--pink);
}
h2:first-of-type { margin-top: 0; }

h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin: 1.75rem 0 0.5rem;
}

/* ── Paragraph ───────────────────────────────── */
p { margin-bottom: 0.9rem; color: var(--text-sub); }

/* ── Table ───────────────────────────────────── */
.table-wrap { overflow-x: auto; margin: 0.75rem 0 1.25rem; border-radius: 8px; box-shadow: 0 1px 6px rgba(0,0,0,0.07); }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; background: #fff; }
thead tr { background: #f9f9fb; }
th {
  text-align: left;
  padding: 0.55rem 0.9rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: #777;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
td {
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid #f2f2f2;
  vertical-align: top;
  color: var(--text-sub);
}
tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--pink-bg); }

/* ── kbd / code ──────────────────────────────── */
kbd {
  display: inline-block;
  background: #f5f5f7;
  border: 1px solid #d0d0d8;
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 0.1em 0.5em;
  font-family: "Consolas", "SFMono-Regular", monospace;
  font-size: 0.82em;
  color: var(--text);
  white-space: nowrap;
}
code {
  background: #f5f5f7;
  border: 1px solid #e0e0e8;
  border-radius: 4px;
  padding: 0.1em 0.45em;
  font-family: "Consolas", "SFMono-Regular", monospace;
  font-size: 0.875em;
  color: var(--accent);
}
pre {
  background: #f8f8fa;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.7;
  margin: 0.75rem 0 1.25rem;
}
pre code { background: none; border: none; padding: 0; color: var(--text); font-size: 1em; }

/* ── Lists ───────────────────────────────────── */
ul, ol { margin: 0.5rem 0 1rem 1.5rem; }
li { margin-bottom: 0.35rem; color: var(--text-sub); }
ul li::marker { color: var(--pink-light); }

.step-list { list-style: none; margin-left: 0; counter-reset: step; }
.step-list li {
  counter-increment: step;
  padding: 0.6rem 0.75rem 0.6rem 3rem;
  margin-bottom: 0.5rem;
  background: #fafafa;
  border: 1px solid var(--border);
  border-radius: 8px;
  position: relative;
}
.step-list li::before {
  content: counter(step);
  position: absolute;
  left: 0.75rem;
  top: 0.55rem;
  width: 1.6rem;
  height: 1.6rem;
  background: linear-gradient(135deg, var(--pink-light), var(--pink));
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Info / Warning / Tip boxes ──────────────── */
.box {
  border-radius: 8px;
  padding: 0.8rem 1rem;
  font-size: 0.9rem;
  margin: 0.75rem 0 1.25rem;
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
}
.box-icon { flex-shrink: 0; font-size: 1rem; margin-top: 0.1rem; }
.box-body { color: var(--text-sub); }
.box-body strong { color: var(--text); }
.box.info  { background: #f0f7ff; border: 1px solid #b8d8fa; }
.box.tip   { background: #f0faf4; border: 1px solid #a3ddb8; }
.box.warn  { background: #fffbf0; border: 1px solid #f5d87a; }

/* ── TOC cards (index page) ──────────────────── */
.toc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}
.toc-card {
  display: block;
  padding: 1.1rem 1.25rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
  border-top: 3px solid var(--pink-pale);
}
.toc-card:hover {
  border-top-color: var(--pink);
  box-shadow: 0 4px 16px rgba(214,51,132,0.1);
  transform: translateY(-2px);
  text-decoration: none;
}
.toc-card .toc-icon { font-size: 1.5rem; margin-bottom: 0.4rem; }
.toc-card .toc-title { font-size: 0.97rem; font-weight: 700; color: var(--accent); margin-bottom: 0.2rem; }
.toc-card .toc-desc  { font-size: 0.83rem; color: #777; line-height: 1.55; }

/* ── Footer ──────────────────────────────────── */
footer {
  text-align: center;
  font-size: 0.8rem;
  color: #aaa;
  padding: 2rem 1rem;
  background: #f4f4f6;
  border-top: 1px solid var(--border);
}
footer a { color: #aaa; }

/* ── Responsive ──────────────────────────────── */
@media (max-width: 768px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: static; border-right: none; border-bottom: 1px solid var(--border); padding: 1rem 0; }
  .content { padding: 1.5rem 1.25rem 3rem; }
}