p {
  text-align: left;   /* left | center | right | justify */
  font-size: 24px;
}


b{
  font-size: 26px;
  font-weight: bold;
}

mail{
  color: #5b0cb6;
  font-size:26
}

h1 {
  font-size: 48px;
}

li {
    font-size:20px;
}

.center-txt {
  text-align: center;
}


.center-img {
  display: block;
  margin: 0 auto;
}

.container {
  display: flex;
  gap: 20px;
} 

.home-link {
  text-decoration: none;   /* remove underline */
  color: inherit;          /* keep the same white as header */
}
.home-link:hover {
  color: #ddd;             /* optional hover effect */
}

.left, .right {
  width: 50%;
  padding: 20px;
  border: 2px solid black;
}
body {
  margin: 0;
  font-family: Arial, sans-serif;
}



/* ------objects positioning------*/
body {
  margin: 0;
  font-family: Arial, sans-serif;
}

/* Header */
.header-box {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100px;
  background-color: black;
  color: white;
  display: flex;
  align-items: center;
  padding-left: 20px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
  z-index: 1000;
  border-bottom: 20px solid black;
}

.intro {
  font-size: 26px;
  color: #222;
  font-weight: 500;
}

.positioning li {
  font-style: normal;
  color: black;
  margin-bottom: 10px;
}

.vulgar { color: #0a4edb; font-weight: bold; }
.rigor { color: #a10000; font-weight: bold; }
.indep { color: #1a7f37; font-weight: bold; }

.questions li {
  font-style: italic;
  color: #444;
}

.closing {
  margin-top: 20px;
  font-weight: bold;
}

.closing mail{
  color: #5b0cb6;
  font-size:26
}

.header-content {
  display: flex;
  align-items: baseline;
  gap: 80px;
}
.main-title {
  font-size: 42px;
  font-weight: bold;
}
.subtitle {
  font-size: 28px;
  color: #ddd;
}

/* Layout */
.layout {
  display: flex;
  margin-top: 120px;
  padding: 0 40px 0px 40px;
  gap: 60px;
  min-height: calc(100vh - 120px);
  align-items: stretch;   
}

/* Main content full height */
.main-content {
  flex: 1;                /* take all space minus sidebar */
  padding: 20px;
}

/* Sidebar */
.sidebar {
  width: 300px;
  flex-shrink: 0;
  padding: 40px 0 40px 40px; 
  border-left: 4px solid black;
  align-self: stretch;
}

.menu a {
  text-decoration: none;
  color: rgb(10, 42, 223);
  font-weight: bold;
  font-size: 32px;
  margin-bottom: 60px;  /* increased from 15px */
  display: block;       /* ensures each link is on its own line */
}
.menu a:hover {
  background-color: #d38181;
}

.monthly-theorem {
  margin-top: 60px;
  padding: 20px 0;
}

.monthly-theorem h3 {
  font-size: 28px;
  margin-bottom: 15px;
}

.theorem-link {
  display: block;
  font-size: 22px;
  line-height: 1.5;
  text-decoration: none;
  color: #3b2bbd;
}

.theorem-link strong {
  font-size: 26px;
}


.theorem-link:hover {
  color: #a10000;
}


@media (max-width: 1000px) {
  .layout {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    border-left: none;
    border-top: 2px solid black;
    padding-left: 0;
    padding-top: 20px;
  }
}

.chapter-title {
  font-size: 28px;
  font-weight: bold;
  margin-bottom: 15px;
}

.phenomenon {
  font-weight: bold;
  color: #f01111;
  text-decoration: underline;
}

.dates {
  font-weight: bold;
  color: #8b0000;
}

.details {
  font-style: italic;
  color: #333;
}

.chapter-link {
  font-size: 26px;
  text-decoration: none;
  color: #1f4e79;
  transition: all 0.2s ease;
}

.chapter-link:hover {
  color: #db0505;
  text-decoration: underline;
  transform: translateX(3px);
}

ul.subtopics {
  list-style-type: square;
  margin-top: 10px;
}