* {
  box-sizing: border-box;
}

body {
  font-family: Georgia, serif;
  margin: 0;
  padding: 0;
  background: black;
  color: darkblue;
}

/* Header */
.header {
  position: relative;
  text-align: center;
  color: white;
}

.header-img {
  width: 100%;
  max-height: 340px;
  object-fit: cover;
  display: block;
  filter: brightness(0.72);
}

.header-title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1rem 1.5rem;
  background: linear-gradient(transparent, rgba(0,0,0,6.55));
}

.header-title h1 {
  margin: 0;
  font-size: 2rem;
  font-weight: normal;
  letter-spacing: 0.04em;
  text-shadow: 0 1px 4px rgba(0,0,0,0.6);
}

/* Layout */
.row {
  display: flex;
  flex-wrap: wrap;
  max-width: 1100px;
  margin: 1.5rem auto;
  padding: 0 1rem;
  gap: 1.5rem;
}

.leftcolumn {
  flex: 3;
  min-width: 0;
}

.rightcolumn {
  flex: 1;
  min-width: 200px;
}

/* Cards */
.card {
  background: gray;
  padding: 1.4rem 1.6rem;
  margin-bottom: 1.4rem;
  border-radius: 4px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.10);
}

.card h2 {
  margin: 0 0 0.2rem;
  font-size: 1.3rem;
  color: darkblue;
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.card h5 {
  margin: 0 0 0.8rem;
  font-size: 0.82rem;
  color: darkblue;
  font-weight: normal;
  font-style: italic;
}

.card p {
  line-height: 1.65;
  margin: 0.6rem 0;
  color: black;
}

.card a {
  color: #2a6fa8;
  text-decoration: none;
}

.card a:hover {
  text-decoration: underline;
}

.card ul {
  padding-left: 1.2rem;
  margin: 0.4rem 0;
}

.card ul li {
  margin-bottom: 0.3rem;
}

/* Post images */
.post-images {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.8rem;
}

.post-images img {
  max-width: 100%;
  height: auto;
  flex: 1 1 200px;
  border-radius: 3px;
  object-fit: cover;
}

.card > img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0.8rem 0;
  border-radius: 3px;
}

/* Code blocks */
pre {
  margin: 1rem 0;
  border-radius: 4px;
  overflow-x: auto;
  font-size: 0.82rem;
}

/* Footer */
.footer {
  text-align: center;
  padding: 1.2rem;
  background: linear-gradient(transparent, gray);
  margin-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

/* Responsive */
@media (max-width: 680px) {
  .row {
    flex-direction: column;
  }

  .header-title h1 {
    font-size: 1.4rem;
  }
}