/* stylesheet for Re:VIEW web — minimal modern */

/* --- Sidebar --- */
nav.side-content {
  width: 260px;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  overflow-y: auto;
  padding: 24px 20px;
  background: #f8f9fa;
  border-right: 1px solid #e5e7eb; }
  nav.side-content .side-header {
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid #e5e7eb; }
  nav.side-content .side-cover {
    display: block;
    width: 100%;
    max-width: 180px;
    height: auto;
    margin: 0 auto 12px;
    border-radius: 4px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.12); }
  nav.side-content h1.side-title {
    margin: 0;
    padding: 0;
    font-size: 0.98em;
    font-weight: 700;
    line-height: 1.4;
    color: #374151;
    text-align: center;
    border-top: none;
    border-bottom: none; }
  nav.side-content ul {
    list-style: none;
    padding-left: 0;
    margin: 0; }
  nav.side-content ul li {
    margin-bottom: 2px; }
  nav.side-content ul li a {
    display: block;
    padding: 6px 10px;
    font-size: 0.82em;
    color: #374151;
    text-decoration: none;
    border-radius: 6px;
    line-height: 1.4;
    transition: background 0.15s; }
  nav.side-content ul li a:hover {
    background: #e5e7eb;
    color: #111; }
  nav.side-content .review-signature {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid #e5e7eb;
    font-size: 0.75em;
    color: #9ca3af; }
  nav.side-content .review-signature a {
    color: #6b7280; }

/* --- Language Toggle --- */
.lang-toggle {
  display: flex;
  gap: 0;
  margin-bottom: 12px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  overflow: hidden; }

.lang-btn {
  flex: 1;
  display: block;
  padding: 6px 0;
  text-align: center;
  font-size: 0.78em;
  font-weight: 500;
  color: #6b7280;
  text-decoration: none;
  background: #fff;
  transition: background 0.15s, color 0.15s; }
.lang-btn:hover {
  background: #f3f4f6;
  text-decoration: none; }
.lang-btn.lang-active {
  background: #1f2937;
  color: #fff; }
.lang-btn + .lang-btn {
  border-left: 1px solid #d1d5db; }

/* --- Search --- */
.search-box {
  position: relative;
  margin-bottom: 16px; }

#search-input {
  width: 100%;
  padding: 8px 12px;
  font-size: 0.85em;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  background: #fff;
  color: #1f2937;
  outline: none;
  box-sizing: border-box;
  transition: border-color 0.15s; }
#search-input:focus {
  border-color: #9ca3af; }
#search-input::placeholder {
  color: #9ca3af; }

.search-results {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 4px;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
  max-height: 400px;
  overflow-y: auto;
  z-index: 100; }

.search-result {
  display: block;
  padding: 10px 14px;
  text-decoration: none;
  border-bottom: 1px solid #f3f4f6;
  transition: background 0.1s; }
.search-result:last-child {
  border-bottom: none; }
.search-result:hover {
  background: #f8f9fa;
  text-decoration: none; }

.search-result-title {
  font-size: 0.82em;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 2px; }

.search-result-snippet {
  font-size: 0.75em;
  color: #6b7280;
  line-height: 1.5; }
  .search-result-snippet mark {
    background: #fef08a;
    color: #1f2937;
    padding: 0 1px;
    border-radius: 2px; }

.search-empty {
  padding: 12px 14px;
  font-size: 0.8em;
  color: #9ca3af;
  text-align: center; }

/* --- TOC active & sub-sections --- */
.book-toc > li.toc-active > a {
  background: #e5e7eb;
  color: #111;
  font-weight: 600; }

ul.toc-sub {
  padding-left: 0;
  margin: 2px 0 4px 0; }
  ul.toc-sub li {
    margin-bottom: 0; }
  ul.toc-sub li a {
    padding: 4px 10px 4px 20px;
    font-size: 0.78em;
    color: #6b7280; }
  ul.toc-sub li a:hover {
    background: #e5e7eb;
    color: #374151; }
  ul.toc-sub li.toc-sub-active a {
    color: #111;
    font-weight: 600; }

/* --- Body --- */
.book-body {
  margin-left: 300px;
  margin-right: 0;
  position: relative; }
  .book-body .book-page {
    max-width: 760px;
    margin: 0 auto;
    padding: 48px 40px 64px; }
  .book-body .book-navi {
    position: fixed;
    top: 0;
    min-width: 36px; }
    .book-body .book-navi a {
      text-decoration: none; }
  .book-body .book-prev {
    left: 266px; }
  .book-body .book-next {
    right: 4px; }
  .book-body .book-cursor {
    height: 100vh;
    text-align: center;
    font-size: 24pt;
    padding: 100px 0 0 0;
    color: #d1d5db; }
  .book-body .book-cursor:hover {
    color: #6b7280; }

/* --- Footer --- */
footer p {
  margin-left: 300px;
  padding: 24px 40px;
  text-align: center;
  font-size: 0.8em;
  color: #9ca3af; }

.cover-image img {
  max-width: 100%; }

/* --- Responsive --- */
@media (max-width: 768px) {
  nav.side-content {
    position: relative;
    width: 100%;
    border-right: none;
    border-bottom: 1px solid #e5e7eb; }
  .book-body {
    margin-left: 0; }
  .book-body .book-prev {
    left: 0; }
  footer p {
    margin-left: 0; }
}