/* EMT Playbook & Knowledge Base — design system.
   Self-contained: no external fonts, no external requests. Brand colours match
   the product (assets/css/styles.css --primary etc.) so this reads as the same
   company, not a different tool. */

:root {
  --primary: #1E3F3C;
  --primary-dark: #142B29;
  --primary-light: #2A5651;
  --brand-cream: #E7DFCC;
  --accent-grn: #548235;
  --accent-grn2: #3D6A4D;
  --accent-grn2-bg: #eef4f0;

  --bg: #FBFAF7;
  --bg-raised: #FFFFFF;
  --bg-sidebar: #FFFFFF;
  --text: #1B2422;
  --text-soft: #4B5754;
  --text-faint: #78827F;
  --border: #E3E0D6;
  --border-soft: #EDEAE0;
  --code-bg: #F1EFE6;
  --link: #1E3F3C;
  --link-hover: #548235;

  --live-bg: #E7F3EA;   --live-text: #1E6B3A;  --live-border: #BEE0C8;
  --screen-bg: #E8F0FB; --screen-text: #1D4E96; --screen-border: #C6D9F5;
  --policy-bg: #FBF3DA; --policy-text: #8A6414; --policy-border: #EFDDA0;
  --todo-bg:   #F1E9FB; --todo-text: #6B3FA0;  --todo-border: #DBC7F0;
  --gap-bg:    #FBE7E5; --gap-text: #A13324;   --gap-border: #F0C4BE;

  --shadow-sm: 0 1px 2px rgba(20,30,28,0.06);
  --shadow-md: 0 4px 16px rgba(20,30,28,0.09);
  --radius: 10px;
  --sidebar-w: 288px;
  --toc-w: 220px;
  --content-max: 780px;

  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #14201E;
  --bg-raised: #1B2A27;
  --bg-sidebar: #172422;
  --text: #EAEFEC;
  --text-soft: #B7C4C0;
  --text-faint: #7F8C89;
  --border: #2B3B38;
  --border-soft: #24312E;
  --code-bg: #21302D;
  --link: #7FD19A;
  --link-hover: #A6E3B8;
  --primary-light: #3A6961;
  --accent-grn2: #4A8062;
  --accent-grn2-bg: #1F3129;

  --live-bg: #16321F;   --live-text: #7FD19A;  --live-border: #245334;
  --screen-bg: #17263E; --screen-text: #8FB6F2; --screen-border: #26406B;
  --policy-bg: #362C12; --policy-text: #E7C468; --policy-border: #5A4818;
  --todo-bg:   #2B1F3C; --todo-text: #C9A6EF;  --todo-border: #45305F;
  --gap-bg:    #3B1D18; --gap-text: #F0A190;   --gap-border: #5C2C23;

  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14201E;
    --bg-raised: #1B2A27;
    --bg-sidebar: #172422;
    --text: #EAEFEC;
    --text-soft: #B7C4C0;
    --text-faint: #7F8C89;
    --border: #2B3B38;
    --border-soft: #24312E;
    --code-bg: #21302D;
    --link: #7FD19A;
    --link-hover: #A6E3B8;
    --primary-light: #3A6961;
    --accent-grn2: #4A8062;
    --accent-grn2-bg: #1F3129;

    --live-bg: #16321F;   --live-text: #7FD19A;  --live-border: #245334;
    --screen-bg: #17263E; --screen-text: #8FB6F2; --screen-border: #26406B;
    --policy-bg: #362C12; --policy-text: #E7C468; --policy-border: #5A4818;
    --todo-bg:   #2B1F3C; --todo-text: #C9A6EF;  --todo-border: #45305F;
    --gap-bg:    #3B1D18; --gap-text: #F0A190;   --gap-border: #5C2C23;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--primary); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Topbar (mobile) ---------- */
.topbar {
  display: none;
  position: sticky; top: 0; z-index: 60;
  align-items: center; gap: 12px;
  background: var(--bg-sidebar); border-bottom: 1px solid var(--border);
  padding: 10px 14px;
}
.topbar img { width: 84px; height: auto; background: #fff; padding: 3px 8px; border-radius: 5px; }
.topbar .tb-title { font-weight: 700; font-size: 15px; flex: 1; }
.icon-btn {
  border: 1px solid var(--border); background: var(--bg-raised); color: var(--text);
  border-radius: 8px; width: 38px; height: 38px; display: flex; align-items: center;
  justify-content: center; cursor: pointer; font-size: 18px;
}
.icon-btn:hover { border-color: var(--primary-light); }

/* ---------- Shell layout ---------- */
.shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr) var(--toc-w);
  min-height: 100vh;
  max-width: 1440px;
  margin: 0 auto;
}

/* ---------- Sidebar ---------- */
.sidebar {
  border-right: 1px solid var(--border);
  background: var(--bg-sidebar);
  padding: 22px 16px 40px;
  position: sticky; top: 0; align-self: start; height: 100vh; overflow-y: auto;
}
.sb-brand { display: flex; align-items: center; gap: 10px; padding: 4px 8px 18px; }
.sb-brand img { width: 96px; height: auto; background: #fff; padding: 4px 10px; border-radius: 6px; }
.sb-brand-text { line-height: 1.15; }
.sb-brand-text strong { display: block; font-size: 15px; color: var(--text); }
.sb-brand-text span { font-size: 12px; color: var(--text-faint); }

.search-wrap { position: relative; margin: 0 4px 18px; }
.search-wrap input {
  width: 100%; padding: 10px 34px 10px 34px; border-radius: 9px;
  border: 1px solid var(--border); background: var(--bg-raised); color: var(--text);
  font-size: 14px;
}
.search-wrap input:focus { outline: 2px solid var(--accent-grn2); outline-offset: 1px; }
.search-wrap .si { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); opacity: .55; font-size: 14px; }
.search-wrap kbd {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  font-size: 10px; color: var(--text-faint); border: 1px solid var(--border);
  border-radius: 4px; padding: 1px 5px; background: var(--bg);
}
#searchResults {
  display: none; margin: -8px 4px 16px; max-height: 46vh; overflow-y: auto;
  border: 1px solid var(--border); border-radius: 9px; background: var(--bg-raised);
  box-shadow: var(--shadow-md);
}
#searchResults.show { display: block; }
#searchResults a {
  display: block; padding: 9px 12px; font-size: 13px; color: var(--text);
  border-bottom: 1px solid var(--border-soft);
}
#searchResults a:last-child { border-bottom: none; }
#searchResults a:hover { background: var(--accent-grn2-bg); text-decoration: none; }
#searchResults .sr-group { font-size: 11px; color: var(--text-faint); text-transform: uppercase; letter-spacing: .04em; }
#searchResults mark { background: var(--policy-bg); color: inherit; border-radius: 2px; }
#searchResults .sr-empty { padding: 14px 12px; font-size: 13px; color: var(--text-faint); }

.nav-group { margin-bottom: 4px; }
.nav-group-label {
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em;
  color: var(--text-faint); padding: 14px 10px 6px;
}
.nav-link {
  display: block; padding: 7px 10px; border-radius: 7px; font-size: 13.5px;
  color: var(--text-soft); border-left: 2px solid transparent;
}
.nav-link:hover { background: var(--border-soft); color: var(--text); text-decoration: none; }
.nav-link.active { background: var(--accent-grn2-bg); color: var(--link); font-weight: 600; border-left-color: var(--accent-grn2); }
.nav-link.role { font-size: 12.5px; color: var(--text-faint); padding-left: 20px; }
.nav-link.role:hover, .nav-link.role.active { color: var(--link); }
.nav-hidden { display: none !important; }

.theme-toggle {
  display: flex; gap: 6px; margin: 18px 4px 0; padding-top: 14px; border-top: 1px solid var(--border-soft);
}
.theme-toggle button {
  flex: 1; padding: 7px 4px; font-size: 12px; border-radius: 7px; border: 1px solid var(--border);
  background: var(--bg-raised); color: var(--text-soft); cursor: pointer;
}
.theme-toggle button.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.lang-toggle {
  display: flex; gap: 6px; margin: 18px 4px 0; padding-top: 14px; border-top: 1px solid var(--border-soft);
}
.lang-toggle button {
  flex: 1; padding: 7px 4px; font-size: 12px; border-radius: 7px; border: 1px solid var(--border);
  background: var(--bg-raised); color: var(--text-soft); cursor: pointer;
}
.lang-toggle button.active { background: var(--primary); color: #fff; border-color: var(--primary); cursor: default; }

/* ---------- Main content ---------- */
main { padding: 40px 48px 120px; min-width: 0; }
.content { max-width: var(--content-max); }

.doc-header { margin-bottom: 6px; }
.doc-kicker { font-size: 13px; color: var(--accent-grn2); font-weight: 700; letter-spacing: .03em; text-transform: uppercase; }
.doc-header h1 { font-size: 34px; margin: 6px 0 8px; letter-spacing: -0.01em; }
.doc-sub { color: var(--text-soft); font-size: 16.5px; max-width: 640px; }

section.kb-section { padding-top: 46px; scroll-margin-top: 20px; }
section.kb-section:first-of-type { padding-top: 18px; }

.content h1 { font-size: 27px; margin: 0 0 14px; padding-top: 6px; scroll-margin-top: 20px; }
.content h2 { font-size: 22px; margin: 0 0 14px; padding-top: 4px; scroll-margin-top: 20px; border-bottom: 1px solid var(--border-soft); padding-bottom: 10px; }
.content h3 { font-size: 17.5px; margin: 28px 0 10px; scroll-margin-top: 20px; color: var(--primary); }
:root[data-theme="dark"] .content h3, :root:not([data-theme="light"]) .content h3 { color: var(--link); }
.content h4 { font-size: 15px; margin: 20px 0 8px; }
.content p { margin: 0 0 14px; color: var(--text); }
.content ul, .content ol { margin: 0 0 14px; padding-left: 22px; }
.content li { margin-bottom: 6px; }
.content strong { color: var(--text); }
.content hr { border: none; border-top: 1px solid var(--border); margin: 34px 0; }
.content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .88em; background: var(--code-bg); padding: 2px 5px; border-radius: 4px;
}
.content pre {
  background: var(--code-bg); padding: 14px 16px; border-radius: 9px; overflow-x: auto;
  font-size: 13px; line-height: 1.55; border: 1px solid var(--border-soft);
}
.content pre code { background: none; padding: 0; }
.content blockquote {
  margin: 16px 0; padding: 10px 16px; border-left: 3px solid var(--accent-grn2);
  background: var(--accent-grn2-bg); border-radius: 0 8px 8px 0; color: var(--text-soft);
}
:root[data-theme="dark"] .content blockquote, :root:not([data-theme="light"]) .content blockquote { background: var(--bg-raised); }

.hgroup { display: flex; align-items: baseline; gap: 10px; }
.anchor-link { opacity: 0; font-size: 15px; color: var(--text-faint); text-decoration: none; }
.hgroup:hover .anchor-link { opacity: 1; }

/* ---------- Tables ---------- */
.table-scroll { overflow-x: auto; margin: 0 0 18px; border: 1px solid var(--border); border-radius: 10px; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
.table-scroll table { margin: 0; border: none; border-radius: 0; }
th, td { text-align: left; padding: 9px 13px; border-bottom: 1px solid var(--border-soft); vertical-align: top; }
th { background: var(--border-soft); font-weight: 700; font-size: 12.5px; text-transform: uppercase; letter-spacing: .03em; color: var(--text-soft); white-space: nowrap; }
tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--accent-grn2-bg); }

/* ---------- Badges ---------- */
.badge {
  display: inline-block; font-size: 11px; font-weight: 800; letter-spacing: .03em;
  padding: 2px 8px; border-radius: 20px; border: 1px solid; vertical-align: 1px;
  text-transform: uppercase;
}
.badge--live   { background: var(--live-bg);   color: var(--live-text);   border-color: var(--live-border); }
.badge--screen { background: var(--screen-bg); color: var(--screen-text); border-color: var(--screen-border); }
.badge--policy { background: var(--policy-bg); color: var(--policy-text); border-color: var(--policy-border); }
.badge--todo   { background: var(--todo-bg);   color: var(--todo-text);   border-color: var(--todo-border); }
.badge--gap    { background: var(--gap-bg);    color: var(--gap-text);    border-color: var(--gap-border); }

.legend { display: flex; flex-direction: column; gap: 10px; margin: 16px 0 20px; }
.legend-row { font-size: 14.5px; color: var(--text-soft); display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.legend-row p { margin: 0; }

/* Rule paragraphs get a subtle left rule + hover highlight, and a jump-target flash */
.content p[id] { padding-left: 14px; border-left: 3px solid var(--border); }
.content p[id]:target, [id]:target { animation: flash 2.2s ease; }
@keyframes flash {
  0% { background: var(--policy-bg); }
  100% { background: transparent; }
}
a.rule-ref { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .88em; }
a.rule-ref code { color: var(--link); }

/* ---------- Role cards ---------- */
.role-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 18px 0 10px; }
.role-card {
  border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px;
  background: var(--bg-raised); box-shadow: var(--shadow-sm);
}
.role-card h3 { margin: 0 0 10px; font-size: 15.5px; color: var(--primary); }
:root[data-theme="dark"] .role-card h3, :root:not([data-theme="light"]) .role-card h3 { color: var(--link); }
.role-card ul { margin: 0; padding-left: 18px; }
.role-card li { margin-bottom: 6px; font-size: 13.8px; }

/* ---------- Stage / chain strips ---------- */
.stage-strip { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 18px 0 30px; font-weight: 700; color: var(--text-soft); font-size: 15px; }
.stage-pill {
  background: var(--bg-raised); border: 1px solid var(--border); border-radius: 30px;
  padding: 7px 16px; color: var(--text);
}
.stage-pill--won { background: var(--live-bg); border-color: var(--live-border); color: var(--live-text); }
.chain-strip { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 18px; font-size: 13.5px; }
.chain-strip span { background: var(--accent-grn2-bg); border: 1px solid var(--live-border); border-radius: 8px; padding: 6px 11px; }

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed; right: 24px; bottom: 24px; z-index: 50;
  background: var(--primary); color: #fff; border: none; border-radius: 50%;
  width: 44px; height: 44px; font-size: 18px; cursor: pointer; box-shadow: var(--shadow-md);
  display: none; align-items: center; justify-content: center;
}
.back-to-top.show { display: flex; }

/* ---------- TOC (right rail) ---------- */
.toc { padding: 40px 20px 40px 0; position: sticky; top: 0; align-self: start; height: 100vh; overflow-y: auto; }
.toc-title { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--text-faint); margin-bottom: 10px; }
.toc a { display: block; font-size: 12.8px; color: var(--text-faint); padding: 4px 0 4px 12px; border-left: 2px solid var(--border-soft); }
.toc a:hover { color: var(--text); text-decoration: none; }
.toc a.active { color: var(--primary); border-left-color: var(--accent-grn2); font-weight: 600; }
:root[data-theme="dark"] .toc a.active, :root:not([data-theme="light"]) .toc a.active { color: var(--link); }

/* ---------- Sidebar overlay (mobile) ---------- */
.sb-overlay { display: none; position: fixed; inset: 0; background: rgba(10,15,14,.45); z-index: 55; }
.sb-overlay.show { display: block; }

/* ---------- Footer ---------- */
.doc-footer { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--border); color: var(--text-faint); font-size: 12.5px; }

/* ---------- Responsive ---------- */
@media (max-width: 1280px) {
  .shell { grid-template-columns: var(--sidebar-w) minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 900px) {
  .topbar { display: flex; }
  .shell { grid-template-columns: 1fr; max-width: 100%; }
  .sidebar {
    position: fixed; top: 0; left: 0; height: 100vh; width: 86vw; max-width: 340px;
    transform: translateX(-100%); transition: transform .22s ease; z-index: 56;
    box-shadow: var(--shadow-md);
  }
  .sidebar.open { transform: translateX(0); }
  main { padding: 26px 18px 100px; }
  .doc-header h1 { font-size: 27px; }
  .role-grid { grid-template-columns: 1fr; }
}
@media print {
  .topbar, .sidebar, .toc, .back-to-top, .sb-overlay { display: none !important; }
  .shell { display: block; }
  main { padding: 0; }
  a { color: inherit; text-decoration: underline; }
}