/* Narrower container for reading comfort */
.container { max-width: 720px; }

/* READING PROGRESS */
#reading-progress {
  position: fixed; top: 0; left: 0; z-index: 300;
  height: 2px; width: 0%;
  background: var(--green);
  transition: width 0.1s linear;
  pointer-events: none;
}

/* POST HEADER */
.post-header {
  padding: 7rem 0 3rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
}

.post-title {
  font-family: var(--sans);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  color: var(--text);
  line-height: 1.15;
  margin-bottom: 1rem;
}

.post-meta-bar {
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
}
.post-date { font-size: 12px; color: var(--text3); }
.read-time  { font-size: 12px; color: var(--text3); }
.post-tags  { display: flex; flex-wrap: wrap; gap: 4px; }

/* MARKDOWN CONTENT */
.post-content {
  padding-bottom: 4rem;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
  font-family: var(--sans);
  font-weight: 700;
  color: var(--text);
  margin: 2.5rem 0 1rem;
  line-height: 1.3;
}
.post-content h1 { font-size: 1.9rem; }
.post-content h2 {
  font-size: 1.35rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.post-content h3 { font-size: 1.1rem; color: var(--text2); }
.post-content h4 { font-size: 0.95rem; color: var(--text3); }

.post-content p { margin-bottom: 1.4rem; color: var(--text2); line-height: 1.8; }

.post-content a { color: var(--green); text-underline-offset: 3px; }
.post-content a:hover { color: var(--green2); }

.post-content ul,
.post-content ol {
  margin: 0 0 1.4rem 1.5rem;
  color: var(--text2);
}
.post-content li { margin-bottom: 0.3rem; line-height: 1.8; }

.post-content strong { color: var(--text); font-weight: 500; }
.post-content em { color: var(--amber); font-style: italic; }

.post-content blockquote {
  border-left: 2px solid var(--green);
  padding: 0.75rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--green-dim);
  border-radius: 0 4px 4px 0;
  color: var(--text2);
  font-style: italic;
}
.post-content blockquote p { margin-bottom: 0; color: var(--text2); }

.post-content code {
  font-family: var(--mono);
  font-size: 0.88em;
  color: var(--green);
  background: var(--bg2);
  border: 1px solid var(--border);
  padding: 1px 5px;
  border-radius: 3px;
}

.post-content pre {
  background: var(--bg2) !important;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1.5rem 0;
  position: relative;
}
.post-content pre code {
  font-size: 13px;
  color: var(--text);
  background: none;
  border: none;
  padding: 0;
  border-radius: 0;
}
.post-content pre .lang-label {
  position: absolute;
  top: 0.5rem; right: 0.75rem;
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  pointer-events: none;
  transition: opacity 0.15s;
}
pre:hover .lang-label { opacity: 0; }

/* COPY BUTTON */
.copy-btn {
  position: absolute;
  top: 0.4rem; right: 0.5rem;
  background: var(--bg3);
  border: 1px solid var(--border2);
  color: var(--text3);
  font-family: var(--mono); font-size: 10px;
  padding: 2px 8px;
  border-radius: 3px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s, color 0.15s, border-color 0.15s;
  letter-spacing: 0.03em;
}
pre:hover .copy-btn { opacity: 1; }
.copy-btn:hover, .copy-btn.copied { color: var(--green); border-color: var(--green); opacity: 1; }

/* TABLE OF CONTENTS */
.toc {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 2.5rem;
  overflow: hidden;
}
.toc summary {
  font-size: 11px; color: var(--text3);
  text-transform: uppercase; letter-spacing: 0.08em;
  cursor: pointer; padding: 0.75rem 1.25rem;
  list-style: none; user-select: none;
  transition: color 0.15s;
}
.toc summary::-webkit-details-marker { display: none; }
.toc summary::before { content: '▸  '; color: var(--green); }
.toc[open] summary::before { content: '▾  '; }
.toc summary:hover { color: var(--text2); }
.toc ol { list-style: none; padding: 0 1.25rem 0.75rem; border-top: 1px solid var(--border); }
.toc li { padding: 0.25rem 0; }
.toc li a { font-size: 13px; color: var(--text2); text-decoration: none; transition: color 0.15s; }
.toc li a:hover { color: var(--green); }
.toc-sub { padding-left: 1.25rem; }
.toc-sub a { font-size: 12px; color: var(--text3); }

.post-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}

.post-content img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  border: 1px solid var(--border);
  margin: 1.5rem auto;
}

.post-content figure {
  margin: 2rem 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.post-content figure img {
  margin: 0;
}
.post-content figcaption {
  font-size: 12px;
  color: var(--text3);
  font-style: italic;
  letter-spacing: 0.02em;
  margin-top: 0.4rem;
  text-align: center;
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 13px;
}
.post-content th {
  background: var(--bg2);
  border: 1px solid var(--border);
  padding: 0.6rem 1rem;
  text-align: left;
  color: var(--text);
  font-weight: 500;
}
.post-content td {
  border: 1px solid var(--border);
  padding: 0.6rem 1rem;
  color: var(--text2);
}
.post-content tr:nth-child(even) td { background: var(--bg2); }

/* NAV FOOTER */
.post-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  font-size: 13px;
  flex-wrap: wrap;
  gap: 1rem;
}
.post-nav a {
  color: var(--text2);
  text-decoration: none;
  transition: color 0.2s;
}
.post-nav a:hover { color: var(--green); }
.post-nav-siblings {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.post-nav-prev, .post-nav-next {
  font-size: 12px;
  max-width: 240px;
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (max-width: 600px) {
  .post-content pre { font-size: 12px; padding: 1rem; }
  .post-content table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .copy-btn { opacity: 1; } /* always visible on touch */
}

/* ERROR / LOADING */
.state-msg {
  padding: 6rem 0;
  text-align: center;
  color: var(--text3);
  font-size: 13px;
}