/* ThirstCast — Methods Page v2
   Well-designed scientific methods document. */

.methods-layout {
  max-width: calc(var(--max) + 3rem);
  margin: 0 auto;
  padding: 1.5rem 1.5rem 3rem;
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
  min-width: 0;
}
.methods-layout > * { min-width: 0; }

/* Sticky TOC sidebar */
.methods-nav {
  position: sticky;
  top: 5rem;
  display: grid;
  gap: 0.2rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.9rem;
}
.methods-nav-title {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-2);
  margin-bottom: 0.4rem;
}
.methods-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.83rem;
  font-weight: 500;
  padding: 0.25rem 0.4rem;
  border-radius: var(--radius-xs);
  transition: color var(--motion) var(--ease), background var(--motion) var(--ease);
}
.methods-nav a:hover {
  color: var(--aqua);
  background: var(--aqua-soft);
}

/* Main document area */
.doc {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.75rem 2rem 2.5rem;
  min-width: 0;
  overflow-wrap: anywhere;
  overflow-x: auto;
}
.doc h1, .doc h2 { scroll-margin-top: 5.5rem; }
.doc h1 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 0.6rem; color: var(--ink); }
.doc h2 {
  font-size: 1.25rem;
  margin: 2rem 0 0.65rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--ink);
}
.doc h3 { font-size: 1rem; margin: 1.25rem 0 0.45rem; color: var(--ink-2); }
.doc p { color: var(--ink-2); line-height: 1.7; font-size: 0.95rem; margin-bottom: 0.75rem; }
.doc ul, .doc ol { color: var(--ink-2); font-size: 0.95rem; padding-left: 1.5rem; margin-bottom: 0.75rem; }
.doc li { margin-bottom: 0.35rem; }
.doc img {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  height: auto;
  max-width: 100%;
  margin: 0.75rem 0;
  display: block;
}
.doc code {
  background: var(--surface-2);
  color: var(--aqua);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.85em;
  border: 1px solid var(--line);
}
.doc pre {
  background: #050e10;
  color: #b8d8da;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1rem 1.1rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.83rem;
  line-height: 1.55;
  margin: 0.75rem 0;
}
.doc pre code { background: none; color: inherit; padding: 0; border: none; }
.doc blockquote {
  border-left: 3px solid var(--aqua-dim);
  padding: 0.75rem 1rem;
  margin: 1rem 0;
  background: var(--surface-2);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.doc blockquote p { font-style: italic; }
.doc .table-scroll { margin: 0.75rem 0; }
.doc .table-scroll table { min-width: 40rem; border-collapse: collapse; width: 100%; }
.doc th { background: var(--surface-2); color: var(--muted); font-weight: 600; font-size: 0.8rem; letter-spacing: 0.04em; }
.doc th, .doc td { border: 1px solid var(--line); padding: 0.38rem 0.55rem; font-size: 0.87rem; }
.doc strong { color: var(--ink); }

/* Math formulas */
.doc .formula {
  display: block;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--aqua-dim);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 0.85rem 1rem;
  margin: 0.75rem 0;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--ink-2);
  overflow-x: auto;
}

/* Sources section */
.source-list {
  display: grid;
  gap: 0.45rem;
  margin-top: 0.5rem;
}
.source-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem;
  align-items: flex-start;
  font-size: 0.87rem;
  color: var(--ink-2);
}
.source-item::before {
  content: "→";
  color: var(--aqua-dim);
  font-weight: 700;
  margin-top: 0.05rem;
}
.source-item a { color: var(--aqua); }

/* Methods page hero strip */
.methods-hero {
  background: linear-gradient(135deg, #0a1e22 0%, #071113 100%);
  border-bottom: 1px solid var(--line);
  padding: 2.5rem 1.5rem 2rem;
}
.methods-hero-inner {
  max-width: calc(var(--max) + 3rem);
  margin: 0 auto;
}
.methods-hero .section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--aqua);
  margin-bottom: 0.75rem;
}
.methods-hero .section-kicker::before {
  content: "";
  display: block;
  width: 20px; height: 1px;
  background: var(--aqua);
}
.methods-hero h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  margin-bottom: 0.5rem;
}
.methods-hero p { color: var(--muted); font-size: 1rem; max-width: 42rem; }

/* Loading and error states */
.methods-loading {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  padding: 1rem;
}
.methods-error {
  padding: 1.5rem;
  background: var(--red-soft);
  border: 1px solid var(--red-dim);
  border-radius: var(--radius);
  color: var(--red);
  font-size: 0.92rem;
}

@media (max-width: 800px) {
  .methods-layout {
    grid-template-columns: minmax(0, 1fr);
    padding: 1rem;
  }
  .methods-nav { position: static; }
  .doc { padding: 1.25rem 1rem 2rem; }
}