:root {
  --bg: #2D2A2E;
  --surface: #383539;
  --border: #403E41;
  --text: #FCFCFA;
  --text-secondary: #939293;
  --accent: #78DCE8;
  --accent-light: #383539;
  --green: #A9DC76;
  --red: #FF6188;
  --yellow: #FFD866;
  --purple: #AB9DF2;
  --orange: #FC9867;
  --code-bg: #2D2A2E;
  --header-bg: #383539;
  --header-text: #FCFCFA;
  --breadcrumb-bg: #383539;
  --hr: #403E41;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--purple); text-decoration: underline; }

/* === Header === */
.site-header {
  background: var(--header-bg);
  color: var(--header-text);
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
}
.site-header h1 { font-size: 1.4rem; color: var(--yellow); }
.site-header h1 a { color: var(--yellow); }
.site-header h1 a:hover { text-decoration: none; color: var(--orange); }
.site-header .subtitle { font-size: 0.85rem; color: var(--text-secondary); margin-top: 0.2rem; }

/* === Breadcrumbs === */
.breadcrumb {
  background: var(--breadcrumb-bg);
  padding: 0.5rem 2rem;
  font-size: 0.85rem;
  border-bottom: 1px solid var(--border);
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { margin: 0 0.4rem; color: var(--text-secondary); }

/* === Main container === */
.container { max-width: 960px; margin: 0 auto; padding: 2rem; }

/* === Headings === */
h2 { font-size: 1.6rem; margin: 1.5rem 0 0.8rem; color: var(--yellow); border-bottom: 2px solid var(--accent); padding-bottom: 0.3rem; }
h3 { font-size: 1.25rem; margin: 1.2rem 0 0.6rem; color: var(--green); }
h4 { font-size: 1.05rem; margin: 1rem 0 0.4rem; color: var(--purple); }

p { margin: 0.6rem 0; color: var(--text); }

hr { border: none; border-top: 1px solid var(--border); margin: 1.5rem 0; }

/* === Lists === */
ul, ol { margin: 0.5rem 0 0.5rem 1.5rem; }
li { margin: 0.25rem 0; color: var(--text-secondary); }

/* === Tables === */
table { width: 100%; border-collapse: collapse; margin: 0.8rem 0; }
th, td { border: 1px solid var(--border); padding: 0.5rem 0.75rem; text-align: left; }
th { background: var(--header-bg); color: var(--yellow); font-weight: 600; }
td { color: var(--text-secondary); }
tr:nth-child(even) { background: var(--surface); }

/* === Code === */
code {
  font-family: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: var(--code-bg);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  color: var(--green);
  border: 1px solid var(--border);
}
pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.8rem 1rem;
  overflow-x: auto;
  margin: 0.8rem 0;
  font-size: 0.85rem;
  line-height: 1.4;
  color: var(--green);
}
pre code { background: none; padding: 0; border-radius: 0; border: none; }

/* === Blockquotes === */
blockquote {
  border-left: 4px solid var(--purple);
  background: var(--surface);
  padding: 0.5rem 1rem;
  margin: 0.8rem 0;
  border-radius: 0 4px 4px 0;
  color: var(--text-secondary);
}

/* === Tags / badges === */
.tag { display: inline-block; font-size: 0.75rem; padding: 0.15rem 0.5rem; border-radius: 3px; font-weight: 600; }
.tag-phase { background: #383539; color: var(--accent); border: 1px solid var(--border); }
.tag-week { background: #383539; color: var(--green); border: 1px solid var(--border); }
.tag-capstone { background: #383539; color: var(--orange); border: 1px solid var(--border); }

/* === Cards === */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 6px; padding: 1.2rem; margin: 1rem 0; }
.card h3 { margin-top: 0; }
.card p { color: var(--text-secondary); }

/* === Time budget table inline === */
.budget-table { max-width: 400px; }

/* === Checkbox list === */
.task-list { list-style: none; margin-left: 0; }
.task-list li::before { content: "☐ "; color: var(--text-secondary); }
.task-list li.checked::before { content: "☑ "; color: var(--green); }

/* === TOC === */
.toc { margin: 1rem 0; }
.toc ul { list-style: none; margin-left: 0; }
.toc > ul > li { margin: 0.4rem 0; }
.toc .toc-phase { font-weight: 700; font-size: 1.05rem; margin-top: 0.8rem; }
.toc .toc-phase a { color: var(--yellow); }
.toc .toc-week a { color: var(--text-secondary); }
.toc .toc-week a:hover { color: var(--accent); }
.toc .toc-sub { padding-left: 3rem; font-size: 0.9rem; color: var(--text-secondary); }

/* === Navigation between weeks === */
.week-nav { display: flex; justify-content: space-between; margin: 1.5rem 0 0.5rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.week-nav a { font-weight: 600; }
.week-nav .prev::before { content: "← "; }
.week-nav .next::after { content: " →"; }

/* === Footer === */
.site-footer { text-align: center; padding: 1.5rem; color: var(--text-secondary); font-size: 0.85rem; border-top: 1px solid var(--border); margin-top: 2rem; }

/* === Print === */
@media print {
  .site-header, .breadcrumb, .week-nav, .site-footer { display: none; }
  body { font-size: 12px; color: #000; background: #fff; }
  .container { max-width: 100%; padding: 0.5in; }
  pre { white-space: pre-wrap; }
}