@import url("https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css");
@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;700&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,400;0,700;1,400;1,700&display=swap");

/*-------------------------*
 * Global settings
 *-------------------------*/
:root {
  /* Themed colors */
  --primary-accent: #467fbf;
  --link-focus: #2f5a89;
  --navbar-border-top: #294d76;
  --navbar-focus: #92b3d9;
}

body {
  font-family: "Roboto", "Noto Sans JP", Helvetica, Arial, sans-serif;
  line-height: 1.42857143;
  color: #555555;
}

h1,
h2,
h3,
h4,
.h1,
.h2,
.h3,
.h4 {
  color: #333333;
}

h1,
.h1 {
  font-size: 2.0rem;
}

h2,
.h2 {
  font-size: 1.6rem;
}

h3,
.h3 {
  font-size: 1.4rem;
}

h4,
.h3 {
  font-size: 1.2rem;
}

p {
  margin-bottom: 1rem;
}

ul,
ol {
  padding-inline-start: 1rem;
}

/*-------------------------*
 * Navigation bar settings
 *-------------------------*/
.navbar {
  position: relative;
  padding-top: 5px;
  padding-bottom: 5px;
}

@media (min-width: 768px) {
  .navbar {
    padding-top: 0;
    padding-bottom: 0;
  }
}

.navbar-brand img {
  max-height: 42px;
}

.navbar-nav>li>a {
  text-transform: uppercase;
  font-weight: bold;
  letter-spacing: 0.08em;
  border-top: solid 5px transparent;
}

@media (min-width: 768px) {
  .navbar-nav>li>a {
    line-height: 48px;
  }
}

.nav-link:focus,
.nav-link:hover,
.nav-link.active,
.nav-link.show {
  text-decoration: none;
}

@media (min-width: 768px) {

  .nav-link:focus,
  .nav-link:hover {
    border-top: solid 5px var(--primary-accent);
    background-color: var(--navbar-focus);
  }

  .nav-link.active,
  .nav-link.show {
    border-top: solid 5px var(--navbar-border-top);
    background-color: var(--primary-accent);
  }
}

.navbar ul.dropdown-menu {
  margin: 0;
  padding: 0;
  border-radius: 0;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

@media (max-width: 768px) {
  .navbar ul.dropdown-menu {
    border: none;
    box-shadow: none;
  }
}

.navbar ul.dropdown-menu li {
  list-style-type: none;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.navbar ul.dropdown-menu li .dropdown-item {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  color: #666666;
}

.navbar ul.dropdown-menu li .dropdown-item:hover {
  background-color: transparent;
}

.navbar ul.dropdown-menu li a.dropdown-item {
  transition: letter-spacing 0.3s;
}

@media (max-width: 768px) {
  .navbar ul.dropdown-menu li a.dropdown-item {
    color: var(--primary-accent);
    text-decoration: underline;
  }
}

.navbar ul.dropdown-menu li a.dropdown-item:hover {
  color: var(--primary-accent);
  letter-spacing: 0.16em;
  background-color: var(--bs-dropdown-link-hover-bg);
}

/*-------------------------*
 * Hero image settings
 *-------------------------*/
#hero-image {
  position: relative;
  background: url('/img/dbphoto.webp') center/cover;
  background-size: cover;
}

#hero-image .dark-mask {
  position: relative;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--primary-accent);
  opacity: 0.9;
  filter: alpha(opacity=90);
}

@media (max-width: 768px) {
  #hero-image {
    text-align: center;
  }
}

#hero-image h1 {
  letter-spacing: 0.08em;
}

#hero-image p {
  letter-spacing: 0.10em;
}

/*-------------------------*
 * Heading settings
 *-------------------------*/
#heading {
  background: url('/img/texture-bw.png') center center repeat;
}

/*-------------------------*
 * Content settings
 *-------------------------*/
#content {
  max-width: 820px;
}

#content a {
  color: var(--primary-accent);
  text-decoration: underline;
}

#content a:hover,
#content a:focus {
  color: var(--link-focus);
  text-decoration: none;
}

#content em {
  color: tomato;
}

#content h2,
#content h3 {
  margin-top: 1em;
  margin-bottom: 0.5em;
}

#content h2 {
  padding-bottom: 5px;
  border-bottom: solid 5px var(--primary-accent);
}

#content li {
  margin-top: 0.5em;
  margin-bottom: 0.5em;
}

#content dl.whats-new {
  border: 2px dotted var(--primary-accent);
  padding: 0.5rem;
}

#content dl dt,
#content dl dd {
  padding-top: 0.1rem;
  padding-bottom: 0.1rem;
}

#content blockquote.quoted-info {
  margin: 0.5rem 0;
  padding: 1rem;
  border-left: 3px solid var(--primary-accent);
  background-color: #ddeeff;
}

#content .highlight pre {
  margin-top: 0.5rem;
  padding: 0.5rem;
  border-radius: 0.5rem;
}

#content table {
  border-collapse: collapse;
  margin-top: 1rem;
  margin-bottom: 1rem;
}

#content table thead tr {
  background-color: var(--primary-accent);
  color: #fff;
  border-bottom: 2px solid var(--primary-accent);
}

#content table tr {
  background-color: #fff;
  border-bottom: 2px solid #eee;
}

#content table tr:nth-child(even) {
  background-color: #eee;
}

#content table th,
#content table td {
  position: relative;
  padding: 0.3em 0.8rem;
}

#content img {
  display: block;
  max-width: 100%;
  margin: 1rem 0;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

/*-------------------------*
 * Footer settings
 *-------------------------*/
#copyright {
  background: #333;
  color: #ccc;
  padding: 3rem 0;
  font-size: 0.8rem;
}

#copyright a {
  color: #cceeff;
  text-decoration: underline;
}

#copyright a:hover,
#copyright a:focus {
  color: #66ccff;
  text-decoration: none;
}