/* ============================================================================
   Wave Funk — 03-layout.css
   Layout primitives + macro-layouts (shells, page chrome, grids).
   Components live in 04-components.css.
   ============================================================================ */

/* ── App shell ─────────────────────────────────────────────────────────── */
body.wf-app { overflow: hidden; height: 100vh; }

.wf-shell {
  display: grid;
  grid-template-columns: var(--wf-sidebar-w, 240px) 1fr;
  height: 100vh;
}
@media (max-width: 900px) {
  .wf-shell { grid-template-columns: 1fr; }
  .wf-shell > .wf-sidebar { display: none; }
}

.wf-sidebar {
  border-right: var(--border-1) solid var(--hairline);
  background: var(--bg-sunken);
  display: flex; flex-direction: column;
  min-width: 0;
}
.wf-brand {
  display: flex; align-items: center; gap: 10px;
  padding: var(--space-4);
  border-bottom: var(--border-1) solid var(--hairline-dim);
  min-height: 56px;
}
.wf-brand-name {
  font-size: var(--fs-xs); font-weight: var(--fw-bold);
  letter-spacing: var(--tr-tight); text-transform: uppercase;
  color: var(--fg-strong);
}
.wf-nav-list { display: flex; flex-direction: column; flex: 1; overflow: auto; }
.wf-nav-section {
  font-size: 10px; letter-spacing: 0.12em;
  color: var(--fg-faint); text-transform: uppercase;
  padding: 14px var(--space-4) 6px;
}
.wf-nav-item {
  display: flex; align-items: center; gap: 10px;
  min-height: 36px; padding: 0 var(--space-4);
  font-size: var(--fs-xs); letter-spacing: 0.02em;
  color: var(--fg-muted); cursor: pointer;
  border-left: var(--border-2) solid transparent;
  text-transform: uppercase; text-decoration: none;
}
.wf-nav-item:hover { background: var(--ink-200); color: var(--fg-strong); }
.wf-nav-item.is-active,
.wf-nav-item[aria-current="page"] {
  background: var(--ink-200); color: var(--fg-strong);
  border-left-color: var(--accent);
}
.wf-nav-count { margin-left: auto; color: var(--fg-faint); font-size: 10px; }

.wf-main {
  display: grid;
  grid-template-rows: var(--wf-main-rows, 56px 1fr 28px);
  min-width: 0; min-height: 0;
}
.wf-main.has-header           { grid-template-rows: 56px auto 1fr 28px; }
.wf-main.has-tablewrap        { grid-template-rows: 56px auto 1fr 28px; }

.wf-scroll {
  overflow: auto; min-height: 0;
  padding: var(--wf-scroll-pad, var(--space-5));
  display: flex; flex-direction: column;
  gap: var(--wf-scroll-gap, var(--space-5));
}

/* 2-column list+editor split. */
.wf-content-2col { display: grid; grid-template-columns: var(--wf-list-w, 280px) 1fr; min-height: 0; }
.wf-list { border-right: var(--border-1) solid var(--hairline-dim); overflow: auto; }
.wf-editor { overflow: auto; padding: var(--space-6) var(--space-7); }
.wf-list-item {
  display: grid; grid-template-rows: auto auto; gap: var(--space-1);
  padding: var(--space-3) var(--space-4);
  border-bottom: var(--border-1) solid var(--hairline-dim);
  cursor: pointer; position: relative;
}
.wf-list-item:hover { background: var(--ink-100); }
.wf-list-item.is-active { background: var(--ink-200); }
.wf-list-item.is-active::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 2px; background: var(--accent);
}
.wf-list-title { font-size: 13px; color: var(--fg-strong); font-weight: var(--fw-medium); }
.wf-list-meta  { font-size: 10px; color: var(--fg-muted); letter-spacing: var(--tr-caps); text-transform: uppercase; }

/* ── Page chrome ───────────────────────────────────────────────────────── */
.wf-topbar {
  border-bottom: var(--border-1) solid var(--hairline);
  display: flex; align-items: center;
  padding: 0 var(--space-4); gap: var(--space-3);
  min-height: 56px;
}
.wf-pageheader {
  display: flex; align-items: flex-end; justify-content: space-between;
  padding: var(--space-5) var(--space-5) 0;
  border-bottom: var(--border-1) solid var(--hairline);
  gap: var(--space-5);
}
.wf-crumbs {
  font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--fg-faint);
  margin-bottom: 6px;
  display: flex; align-items: center; gap: var(--space-2);
}
.wf-crumbs a { color: var(--fg-muted); text-decoration: none; }
.wf-crumbs a:hover { color: var(--fg-strong); }
.wf-crumbs .sep { color: var(--fg-faint); }
.wf-crumbs [aria-current="page"] { color: var(--fg-strong); }

.wf-pagetitle {
  font-size: var(--fs-xl); font-weight: var(--fw-black);
  letter-spacing: var(--tr-tight); text-transform: uppercase;
  padding-bottom: var(--space-4);
  color: var(--fg-strong); margin: 0;
}
.wf-page-meta {
  display: flex; gap: var(--space-3); align-items: center;
  font-size: 10px; letter-spacing: var(--tr-caps);
  text-transform: uppercase; color: var(--fg-muted);
}

.wf-bar-sep { width: 1px; height: 14px; background: var(--hairline); display: inline-block; flex-shrink: 0; }

/* ── Containers + dividers ─────────────────────────────────────────────── */
.wf-container { max-width: var(--page-w); margin: 0 auto; padding: 0 var(--space-5); }
.wf-container.sm { max-width: 960px; }
.wf-container.lg { max-width: 1440px; }

.wf-divider { border-top: var(--border-1) solid var(--hairline); margin: var(--space-5) 0; }
.wf-divider.dim { border-color: var(--hairline-dim); }
.wf-divider-txt {
  display: flex; align-items: center; gap: 10px;
  color: var(--fg-muted);
  font-size: 10px; letter-spacing: var(--tr-caps); text-transform: uppercase;
  margin: var(--space-3) 0;
}
.wf-divider-txt::before, .wf-divider-txt::after {
  content: ""; flex: 1;
  border-top: var(--border-1) solid var(--hairline-dim);
}

/* ── Grids ─────────────────────────────────────────────────────────────── */
.wf-grid { display: grid; gap: var(--space-5); }
.wf-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.wf-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.wf-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.wf-grid.cols-6 { grid-template-columns: repeat(6, 1fr); }
@media (max-width: 900px) {
  .wf-grid.cols-3, .wf-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .wf-grid.cols-6 { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 600px) {
  .wf-grid.cols-2, .wf-grid.cols-3, .wf-grid.cols-4 { grid-template-columns: 1fr; }
  .wf-grid.cols-6 { grid-template-columns: repeat(2, 1fr); }
}

/* Split pane — 2-col, hairline between, equal by default. */
.wf-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: var(--border-1) solid var(--hairline);
}
.wf-split > * + * { border-left: var(--border-1) solid var(--hairline); }
.wf-split.vertical { grid-template-columns: 1fr; grid-auto-flow: row; }
.wf-split.vertical > * + * { border-left: 0; border-top: var(--border-1) solid var(--hairline); }

/* Hero. */
.wf-hero {
  padding: var(--space-9) var(--space-6) var(--space-7);
  border-bottom: var(--border-1) solid var(--hairline);
}
.wf-hero h1 {
  font-size: clamp(48px, 8vw, 104px);
  font-weight: var(--fw-black);
  text-transform: uppercase;
  letter-spacing: -0.035em; line-height: 0.95;
  color: var(--fg-strong);
}
.wf-hero .wf-hero-sub {
  max-width: 60ch;
  color: var(--fg); font-size: var(--fs-md); line-height: 1.6;
  margin-top: var(--space-5);
}
.wf-hero-actions { display: flex; gap: var(--space-3); margin-top: var(--space-6); flex-wrap: wrap; }

/* ── Marketing nav ─────────────────────────────────────────────────────── */
.wf-mnav {
  height: 64px;
  border-bottom: var(--border-1) solid var(--hairline);
  display: flex; align-items: center;
  padding: 0 var(--space-6); gap: var(--space-5);
  position: sticky; top: 0;
  background: var(--bg); z-index: var(--z-sticky);
}
.wf-mnav a {
  color: var(--fg-muted); text-decoration: none;
  font-size: 11px; letter-spacing: var(--tr-caps); text-transform: uppercase;
}
.wf-mnav a:hover { color: var(--fg-strong); text-decoration: none; }
.wf-mnav a.is-active { color: var(--fg-strong); }
.wf-mnav-spacer { flex: 1; }

/* ── Marketing footer ──────────────────────────────────────────────────── */
.wf-footer-grid {
  border-top: var(--border-1) solid var(--hairline);
  padding: var(--space-6);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-6);
  font-size: var(--fs-xs); color: var(--fg-muted);
}
@media (max-width: 900px) {
  .wf-footer-grid { grid-template-columns: 1fr 1fr; }
}
.wf-footer-grid h4 {
  font-size: 10px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--fg-faint);
  margin: 0 0 var(--space-3); font-weight: var(--fw-medium);
}
.wf-footer-grid a { color: var(--fg); display: block; text-decoration: none; padding: var(--space-1) 0; }
.wf-footer-grid a:hover { color: var(--accent); text-decoration: none; }

/* ── Docs layout ───────────────────────────────────────────────────────── */
.wf-docs-shell {
  display: grid;
  grid-template-columns: var(--wf-docs-side-w, 260px) 1fr var(--wf-docs-toc-w, 240px);
  min-height: calc(100vh - 56px);
}
@media (max-width: 1100px) {
  .wf-docs-shell { grid-template-columns: var(--wf-docs-side-w, 240px) 1fr; }
  .wf-toc { display: none; }
}
@media (max-width: 700px) {
  .wf-docs-shell { grid-template-columns: 1fr; }
  .wf-docs-side { display: none; }
}
.wf-docs-side {
  border-right: var(--border-1) solid var(--hairline);
  padding: var(--space-5) 0;
  overflow: auto;
}
.wf-docs-side a {
  display: block; padding: 6px var(--space-5);
  color: var(--fg-muted); text-decoration: none;
  font-size: var(--fs-xs);
  border-left: var(--border-2) solid transparent;
  min-height: 28px;
}
.wf-docs-side a:hover { color: var(--fg-strong); background: var(--ink-100); text-decoration: none; }
.wf-docs-side a.is-active,
.wf-docs-side a[aria-current="page"] { color: var(--fg-strong); border-left-color: var(--accent); background: var(--ink-100); }
.wf-docs-side-section {
  font-size: 10px; letter-spacing: 0.12em;
  color: var(--fg-faint); text-transform: uppercase;
  padding: 18px var(--space-5) 6px;
}

/* Prose — long-form wrapper. */
.wf-prose { padding: var(--space-7) var(--space-8) var(--space-9); max-width: 860px; }
.wf-prose h1 { font-size: var(--fs-4xl); margin: var(--space-4) 0 var(--space-2); line-height: 1; }
.wf-prose h2 {
  font-size: 22px; font-weight: var(--fw-bold);
  text-transform: uppercase; letter-spacing: var(--tr-tight);
  color: var(--fg-strong);
  margin: var(--space-7) 0 var(--space-3); padding-bottom: var(--space-2);
  border-bottom: var(--border-1) solid var(--hairline-dim);
}
.wf-prose h3 { font-size: var(--fs-md); font-weight: var(--fw-bold); color: var(--fg-strong); margin: var(--space-5) 0 var(--space-2); }
.wf-prose .wf-lead { font-size: var(--fs-md); color: var(--fg); line-height: 1.6; margin: var(--space-4) 0 var(--space-6); max-width: 68ch; }
.wf-prose p {
  font-size: var(--fs-sm); line-height: var(--lh-loose); color: var(--fg);
  max-width: 68ch; margin: 0 0 var(--space-3);
  text-wrap: pretty;
}
.wf-prose ul, .wf-prose ol { padding-left: var(--space-5); color: var(--fg); font-size: var(--fs-sm); line-height: var(--lh-loose); }
.wf-prose pre {
  background: var(--ink-100);
  border: var(--border-1) solid var(--hairline-dim);
  padding: var(--space-4); font-size: var(--fs-xs); line-height: 1.55;
  color: var(--fg); overflow-x: auto;
  margin: var(--space-4) 0;
  font-family: var(--font-mono);
}

/* TOC column. */
.wf-toc {
  border-left: var(--border-1) solid var(--hairline);
  padding: var(--space-7) var(--space-5);
  font-size: var(--fs-xs);
  position: sticky; top: 56px;
  height: calc(100vh - 56px); overflow: auto;
}
.wf-toc h4 {
  font-size: 10px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--fg-faint);
  margin: 0 0 10px; font-weight: var(--fw-medium);
}
.wf-toc a {
  display: block; color: var(--fg-muted); text-decoration: none;
  padding: var(--space-1) 0;
  border-left: var(--border-2) solid transparent;
  padding-left: var(--space-2); margin-left: -8px;
}
.wf-toc a:hover { color: var(--fg-strong); text-decoration: none; }
.wf-toc a.is-active { color: var(--fg-strong); border-left-color: var(--accent); }
.wf-toc a.h3 { padding-left: var(--space-5); font-size: 11px; }

.wf-docs-pager {
  display: flex; justify-content: space-between; align-items: stretch;
  gap: var(--space-4);
  margin-top: var(--space-7);
  border-top: var(--border-1) solid var(--hairline); padding-top: var(--space-5);
}
.wf-docs-pager a {
  display: block; padding: 14px var(--space-4);
  border: var(--border-1) solid var(--hairline-dim);
  color: var(--fg); text-decoration: none;
  min-width: 200px;
}
.wf-docs-pager a:hover { border-color: var(--accent); text-decoration: none; color: var(--fg-strong); }
.wf-docs-pager-k { font-size: 10px; letter-spacing: var(--tr-caps); text-transform: uppercase; color: var(--fg-muted); display: block; margin-bottom: var(--space-1); }
.wf-docs-pager-t { font-size: var(--fs-sm); font-weight: var(--fw-bold); color: var(--fg-strong); text-transform: uppercase; }
.wf-docs-pager a.next { text-align: right; }

/* ── Auth split ────────────────────────────────────────────────────────── */
.wf-auth {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr auto;
}
.wf-auth > .wf-statusbar { grid-column: 1 / -1; }

.wf-auth-splash {
  background: var(--bg-splash);
  border-right: var(--border-1) solid var(--hairline);
  display: flex; flex-direction: column;
  padding: var(--space-6); color: var(--fg);
  position: relative; overflow: hidden;
  justify-content: center;
}

.wf-auth-ascii {
  margin: auto 0; color: var(--accent);
  font-size: var(--fs-xs); line-height: 1.15;
  white-space: pre; font-family: var(--font-mono);
}
.wf-auth-quote {
  border-left: var(--border-1) solid var(--accent);
  padding-left: var(--space-4);
  font-size: var(--fs-sm); line-height: 1.6;
  color: var(--fg); max-width: 44ch;
}
.wf-auth-quote .attr {
  font-size: 10px; letter-spacing: var(--tr-caps);
  text-transform: uppercase; color: var(--fg-muted);
  margin-top: 10px;
}
.wf-auth-form { display: flex; flex-direction: column; padding: var(--space-6) var(--space-7); }
.wf-auth-top {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 10px; letter-spacing: var(--tr-caps);
  text-transform: uppercase; color: var(--fg-muted);
  width: 100%;
}
.wf-auth-wrap { margin: auto 0; max-width: 400px; width: 100%; }
.wf-auth-wrap h1 { font-size: 40px; margin: 0; line-height: 1; }
.wf-auth-sub { color: var(--fg-muted); font-size: 13px; margin-top: var(--space-3); line-height: 1.6; }

@media (max-width: 900px) {
  .wf-auth { grid-template-columns: 1fr; }
  .wf-auth-splash { display: none; }
  .wf-auth-form { align-items: center; justify-content: center; }
}