body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #05073f;
  color: rgb(255, 255, 255);
  overflow-x: hidden;
}

/* Match the normal Learn header layout while keeping OG mode colors. */
.site-header {
  position: sticky;
  top: 42px;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(8px, 2vw, 24px);
  width: 100%;
  padding: 8px clamp(12px, 3vw, 32px);
  color: #fff;
  background: #001328;
  box-shadow: 0 2px 10px #0005;
}
.site-brand { display: flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; white-space: nowrap; }
.site-brand h1 { margin: 0; font: 600 clamp(1rem, 2vw, 1.25rem) Arial, sans-serif; }
.brand-mark { display: block; width: 36px; height: 36px; flex: 0 0 auto; overflow: hidden; }
.brand-mark img { display: block; width: 240%; height: 240%; max-width: none; object-fit: contain; transform: translate(-29.2%, -29.2%); }
.site-nav { display: flex; flex: 1; justify-content: center; }
.site-nav a, .site-actions a, .site-actions button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 9px 12px;
  border: 0;
  border-radius: 7px;
  color: inherit;
  background: transparent;
  font: 600 14px Arial, sans-serif;
  text-decoration: none;
  cursor: pointer;
}
.site-nav a:hover, .site-nav a:focus-visible, .site-actions a:hover, .site-actions a:focus-visible, .site-actions button:hover, .site-actions button:focus-visible { background: #ffffff20; outline: 2px solid transparent; }
.site-actions { display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.site-actions .lang-btn { min-width: 40px; padding: 8px 10px; }
.lang-dropdown { position: relative; display: inline-block; }
.lang-menu { display: none; position: absolute; right: 0; z-index: 1200; min-width: 150px; background: #fff; border: 1px solid #ccd3dc; border-radius: 6px; box-shadow: 0 8px 16px #0003; }
.lang-menu a { display: block; padding: 12px 16px; color: #172033; font: 14px Arial, sans-serif; text-decoration: none; }
.lang-menu a:hover { background: #edf2f8; }
.lang-dropdown:hover .lang-menu, .lang-dropdown:focus-within .lang-menu { display: block; }
.site-header .mode-switch { gap: 8px; font: 600 13px Arial, sans-serif; }
.Subjectsf, .Subjectst { position: sticky; z-index: 90; display: flex; flex-wrap: wrap; justify-content: space-around; align-items: center; gap: 8px; width: 100%; padding: 8px 0; background: #002040; }
.Subjectsf { top: 100px; }
.Subjectst { top: 154px; background: #002b52; }
.Subjectsf a, .Subjectst a { padding: 9px 16px; border-radius: 5px; color: #fff; text-decoration: none; font: 14px "Coming Soon", sans-serif; }
.Subjectsf a:hover, .Subjectst a:hover, .Subjectsf a:focus-visible, .Subjectst a:focus-visible { background: #003b70; outline: 2px solid #fff; outline-offset: 2px; }
@media (max-width: 640px) {
  .site-header { top: 42px; flex-wrap: wrap; gap: 4px 8px; padding: 6px 8px; }
  .site-brand { gap: 6px; }
  .brand-mark { width: 30px; height: 30px; }
  .site-nav { flex: 0 0 auto; }
  .site-nav a, .site-actions a, .site-actions button { min-height: 36px; padding: 7px; font-size: 12px; }
  .site-actions { gap: 2px; }
  .site-header .mode-switch { gap: 4px; }
  .Subjectsf { top: 88px; }
  .Subjectst { top: 136px; }
}

/* Top horizontal navigation bar */
.top-sidebar {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #001328;
  padding: 6px clamp(8px, 3vw, 28px);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  gap: 6px;
  min-height: 54px;
}

.top-sidebar a {
  color: white;
  text-decoration: none;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 14px;
  transition: background-color 0.3s;
}

.top-sidebar a:hover,
.top-sidebar a:focus-visible {
  background-color: #002040;
  outline: 2px solid #fff;
  outline-offset: 2px;
}

/* Second horizontal bar below top-sidebar */
.second-sidebar {
  display: flex;
  justify-content: space-around;
  align-items: center;
  background-color: #002040;
  padding: 10px 0;
  position: fixed;
  top: 60px; /* height of top-sidebar */
  width: 100%;
  z-index: 999;
}

.second-sidebar a {
  color: white;
  text-decoration: none;
  padding: 12px 18px;
  transition: background-color 0.3s;
  font-family: "Coming Soon", sans-serif;
}

.second-sidebar a:hover {
  background-color: #003060;
  border-radius: 4px;
}

/* Language Toggle Button */
.lang {
  position: fixed;
  top: 68px;
  right: 16px;
  padding: 10px 16px;
  background-color: #003060;
  color: white;
  border: none;
  border-radius: 6px;
  font-family: "Coming Soon", sans-serif;
  cursor: pointer;
  display: block;
  text-align: center;
  text-decoration: none;
  z-index: 1001; /* Higher than nav bars */
  box-shadow: 0 0 6px rgba(255, 255, 255, 0.2);
  min-height: 40px;
}

.lang:hover {
  background-color: #004080;
}

.og-mode-toggle {
  position: fixed;
  top: 68px;
  right: 118px;
  z-index: 1001;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #fff;
  font: 14px "Coming Soon", sans-serif;
  text-decoration: none;
}

.og-mode-track {
  width: 38px;
  height: 22px;
  padding: 3px;
  border-radius: 12px;
  background: #003060;
  box-shadow: 0 0 6px rgba(255, 255, 255, 0.2);
}

.og-mode-track i {
  display: block;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  transition: transform .18s ease;
}

.og-mode-toggle:hover .og-mode-track i,
.og-mode-toggle:focus-visible .og-mode-track i {
  transform: translateX(16px);
}

.og-mode-toggle:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 4px;
}

/* Main content area replaced by iframe */
.content-frame {
  position: absolute;
  top: 120px;
  left: 0;
  width: 100%;
  height: calc(100vh - 120px);
  border: none;
  background-color: #05073f;
  z-index: 1;
}

/* Optional fallback content styling */
.content {
  padding: 125px 20px 40px;
}

.subject-picker nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  max-width: 900px;
  margin: 28px auto;
}
.subject-picker nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 18px;
  border-radius: 6px;
  background: #002040;
  color: #fff;
  text-decoration: none;
}
.subject-picker nav a:hover,
.subject-picker nav a:focus-visible { background: #003060; outline: 2px solid #fff; outline-offset: 2px; }
.subject-picker nav a[aria-current="page"] { background: #003060; }

@media (max-width: 640px) {
  .top-sidebar { justify-content: space-between; padding: 5px 8px; gap: 2px; min-height: 48px; }
  .top-sidebar a { padding: 9px 7px; font-size: 12px; }
  .lang { top: 58px; right: 8px; padding: 8px 10px; font-size: 12px; }
  .og-mode-toggle { top: 58px; right: 84px; font-size: 12px; }
  .og-mode-track { width: 32px; height: 19px; }
  .og-mode-track i { width: 13px; height: 13px; }
  .content-frame { top: 108px; height: calc(100vh - 108px); }
  .content { padding: 112px 12px 28px; }
}

@media (max-height: 500px) and (orientation: landscape) {
  .content-frame { top: 100px; height: calc(100vh - 100px); }
  .content { padding-top: 104px; }
}

/* Typography */
h1 {
  font-family: "Story Script", sans-serif;
  text-align: center;
}

p, span {
  font-family: "Coming Soon", sans-serif;
}

.message {
  display: flex;
  margin-bottom: 10px;
}

.message.user {
  justify-content: flex-end;
}

.message.ai {
  justify-content: flex-start;
}

.bubble {
  padding: 8px;
  border-radius: 8px;
  max-width: 70%;
}

.bubble.user {
  background-color: #4169E1; /* Light Blue */
}

.bubble.ai {
  background-color: #5A5559; /* Light Gray */
}

@media (max-width: 600px) {
  .lang { right: 12px; top: 112px; padding: 8px 12px; font-size: 12px; }
  .og-mode-toggle { right: 12px; top: 158px; font-size: 12px; }
  .top-sidebar a {
    padding: 12px 4px;
    font-size: 12px;
    white-space: nowrap;
  }
}














.ui-icon { width: 1.15em; height: 1.15em; display: inline-block; vertical-align: -0.2em; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.ui-icon.back-arrow { transform: scaleX(-1); }
html[dir="rtl"] .ui-icon.back-arrow { transform: none; }
html[dir="rtl"] .ui-icon.forward-arrow { transform: scaleX(-1); }
html[lang="ar"], html[lang="ar"] body, html[lang="ar"] a, html[lang="ar"] button { font-family: Tahoma, "Noto Naskh Arabic", "Noto Sans Arabic", Arial, sans-serif; }
html[dir="rtl"] { direction: rtl; }
html[dir="rtl"] .top-sidebar, html[dir="rtl"] .second-sidebar { direction: rtl; }