/* =====================================================================
   Carino Learn — stylesheet
   Design system ported from carino.systems (gold-on-black, IBM Plex).
   No framework. Pure CSS.
   ===================================================================== */

:root {
  --bg-header:    #050505;
  --bg-app:       #0a0a0a;
  --bg-panel:     #0d0d0d;
  --bg-card:      #111111;
  --bg-elev:      #161616;
  --bg-code:      #0c0c0c;
  --accent:       #eab308;
  --accent-2:     #b45309;
  --accent-faint: rgba(234,179,8,0.06);
  --accent-glow:  rgba(234,179,8,0.18);
  --border:       #262626;
  --border-soft:  #1c1c1c;
  --text:         #ffffff;
  --text-sec:     #a3a3a3;
  --text-muted:   #8a8a8a;
  --ok:           #22c55e;
  --live:         #ef4444;

  /* syntax */
  --t-ins: #eab308;  --t-reg: #7dd3fc;  --t-num: #f0abfc;
  --t-str: #86efac;  --t-com: #6b7280;  --t-dir: #fca5a5;  --t-lbl: #fbbf24;

  --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --display: 'Red Hat Display', var(--sans);
  --nav-h: 70px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }
body {
  background: var(--bg-app); color: var(--text);
  font-family: var(--sans); line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
code { font-family: var(--mono); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

/* ---------- background texture ---------- */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(900px 500px at 80% -5%, rgba(234,179,8,0.07), transparent 60%),
    radial-gradient(700px 500px at 0% 10%, rgba(180,83,9,0.05), transparent 55%);
}

/* ===================================================================== */
/* Navbar                                                                */
/* ===================================================================== */
.top-header {
  height: var(--nav-h); position: sticky; top: 0; z-index: 200;
  background: linear-gradient(180deg, #0f0f0f 0%, #050505 100%);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 20px; gap: 16px;
}
.header-left  { display: flex; align-items: center; gap: 22px; min-width: 0; }
.header-right { display: flex; align-items: center; gap: 12px; }
/* Right-cluster slot order, fleet convention, read right-to-left:
   GitHub + LinkedIn last, language beside them, then status, then
   this app's own controls furthest from the edge. Set with `order`
   because carino-lang.js injects itself asynchronously. */
.header-right > * { order: 1; }
.header-right > .status-toggle { order: 2; }
.header-right > #cnLangBtn { order: 3; }
.header-right > .social-row { order: 4; }

.cn-brand { display: flex; align-items: center; flex-shrink: 0; }
.brand-name {
  font-family: var(--display); font-size: 1.7rem; font-weight: 900; line-height: 1;
  background: linear-gradient(130deg, #fef08a 0%, #eab308 50%, #b45309 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; white-space: nowrap;
}
.app-tag {
  -webkit-text-fill-color: var(--accent); color: var(--accent);
  font-family: var(--mono); font-size: .62rem; font-weight: 700;
  letter-spacing: .14em; text-transform: uppercase;
  border: 1px solid var(--border); border-radius: 4px;
  padding: 3px 7px; margin-left: 12px; transition: .2s;
}
.app-tag:hover { border-color: var(--accent); background: rgba(234,179,8,.12); }
.header-clock { display: flex; align-items: baseline; gap: 10px;
  border-left: 1px solid var(--border); padding-left: 22px; }
.clock-time { font-family: var(--mono); font-size: 1.15rem; font-weight: 700; }
.clock-tz {
  font-family: var(--mono); font-size: .62rem; font-weight: 700;
  color: var(--bg-header); background: var(--accent);
  padding: 2px 6px; border-radius: 3px;
}
.brand-greeting { font-family: var(--mono); font-size: .72rem; color: var(--text-sec); margin-left: 6px; }

.prog-mini { display: flex; align-items: center; }
.prog-ring {
  width: 38px; height: 38px; border-radius: 50%;
  background: conic-gradient(var(--accent) 0deg, var(--border) 0deg);
  display: grid; place-items: center; transition: background .4s ease;
}
.prog-ring span {
  width: 30px; height: 30px; border-radius: 50%; background: var(--bg-header);
  display: grid; place-items: center;
  font-family: var(--mono); font-size: .58rem; font-weight: 700; color: var(--accent);
}

.social-row { display: flex; gap: 8px; }
.icon-btn {
  width: 32px; height: 32px; border: 1px solid var(--border); border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); transition: .2s; background: transparent;
}
.icon-btn:hover {
  border-color: var(--accent); color: var(--bg-header); background: var(--accent);
  transform: translateY(-2px); box-shadow: 0 4px 12px var(--accent-glow);
}
.icon-btn svg { width: 15px; height: 15px; }

.status-toggle {
  display: flex; align-items: center; gap: 8px; background: transparent;
  border: 1px solid var(--border); color: var(--text-sec); font-family: var(--mono);
  font-size: .72rem; text-transform: uppercase; letter-spacing: .1em;
  padding: 0 14px; height: 32px; border-radius: 4px; cursor: pointer; transition: .2s;
}
.status-toggle:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-faint); }
.pulse-dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 8px var(--accent); animation: pulse-glow 2s ease-in-out infinite;
}
@keyframes pulse-glow { 0%,100% { opacity: 1; } 50% { opacity: .35; } }

.diag-dropdown {
  position: absolute; top: calc(var(--nav-h) - 6px); right: 16px; width: 280px;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px;
  padding: 16px; box-shadow: 0 18px 40px rgba(0,0,0,.6);
  opacity: 0; visibility: hidden; transform: translateY(-8px); transition: .18s; z-index: 250;
}
.diag-dropdown.open { opacity: 1; visibility: visible; transform: translateY(0); }
.diag-section {
  font-family: var(--mono); font-size: .6rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--accent); margin: 10px 0 5px; padding-bottom: 4px; border-bottom: 1px solid var(--border-soft);
}
.diag-section:first-child { margin-top: 0; }
.diag-row { display: flex; justify-content: space-between; padding: 2px 0; font-size: .8rem; }

/* Two short readings share one line. Each half keeps its natural width, so a
   translation that outgrows the half wraps the pair back into full-width rows
   instead of truncating — the panel is only 280px, and es/ru labels are long. */
.diag-pair { display: flex; flex-wrap: wrap; justify-content: space-between; column-gap: 20px; }
.diag-pair > .diag-row { flex: 0 1 auto; min-width: max-content; gap: 8px; }
.diag-lbl { color: var(--text-muted); }
.diag-val { font-family: var(--mono); color: var(--text); }

/* ===================================================================== */
/* Hero                                                                  */
/* ===================================================================== */
.hero { padding: 72px 24px 40px; border-bottom: 1px solid var(--border-soft); }
.hero-inner { max-width: 980px; margin: 0 auto; }
.kicker {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .2em; text-transform: uppercase;
  color: var(--accent); border: 1px solid var(--border); border-radius: 999px;
  padding: 5px 12px; display: inline-block;
}
.hero h1 {
  font-family: var(--display); font-weight: 900; line-height: 1.05;
  font-size: clamp(2.1rem, 6vw, 4rem); margin: 22px 0 18px; letter-spacing: -0.02em;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(130deg, #fef08a 0%, #eab308 55%, #b45309 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.lede { font-size: 1.12rem; color: var(--text-sec); max-width: 760px; }
.lede code {
  background: var(--bg-elev); border: 1px solid var(--border-soft);
  padding: 1px 6px; border-radius: 4px; font-size: .9em; color: var(--accent);
}
.lede b { color: var(--text); }

.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 26px; }
.btn {
  font-family: var(--mono); font-size: .82rem; letter-spacing: .04em;
  padding: 11px 20px; border-radius: 6px; cursor: pointer; transition: .18s;
  border: 1px solid var(--border); background: transparent; color: var(--text);
}
.btn-accent {
  background: var(--accent); border-color: var(--accent); color: #1a1205; font-weight: 700;
}
.btn-accent:hover { box-shadow: 0 6px 20px var(--accent-glow); transform: translateY(-2px); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-faint); }

.prog-bar-wrap { display: flex; align-items: center; gap: 12px; max-width: 560px; margin-bottom: 26px; }
.prog-bar { flex: 1; height: 8px; background: var(--bg-elev); border: 1px solid var(--border-soft); border-radius: 999px; overflow: hidden; }
.prog-fill { height: 100%; width: 0; border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-2), var(--accent)); transition: width .4s ease; }
.prog-label { font-family: var(--mono); font-size: .68rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .12em; }

/* ===================================================================== */
/* Layout: jump nav + roadmap                                            */
/* ===================================================================== */
.layout {
  max-width: 1440px; margin: 0 auto; padding: 36px 28px 0;
  display: grid; grid-template-columns: 210px 1fr; gap: 44px; align-items: start;
}
.jump {
  position: sticky; top: calc(var(--nav-h) + 20px);
  max-height: calc(100vh - var(--nav-h) - 40px); overflow-y: auto;
  border-left: 1px solid var(--border-soft); padding-left: 4px;
}
.jump-title {
  font-family: var(--mono); font-size: .64rem; letter-spacing: .18em; text-transform: uppercase;
  color: var(--text-muted); padding: 0 0 10px 14px;
}
.jump-item {
  display: flex; align-items: center; gap: 10px; padding: 7px 12px;
  border-left: 2px solid transparent; color: var(--text-muted);
  font-size: .82rem; transition: .15s; margin-left: -2px;
}
.jump-item:hover { color: var(--text); }
.jump-item.active { color: var(--accent); border-left-color: var(--accent); }
.jump-item.done .jn-num { background: var(--accent); color: #1a1205; border-color: var(--accent); }
.jn-num {
  width: 22px; height: 22px; flex-shrink: 0; border: 1px solid var(--border);
  border-radius: 5px; display: grid; place-items: center;
  font-family: var(--mono); font-size: .7rem; font-weight: 700;
}
.jn-t { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- track headers ---------- */
.track-head { margin: 30px 0 8px; }
.roadmap > .track-head:first-child { margin-top: 0; }
.track-kicker {
  font-family: var(--mono); font-size: .64rem; letter-spacing: .2em; text-transform: uppercase; color: var(--accent);
}
.track-head h2 {
  font-family: var(--display); font-weight: 900; font-size: 1.7rem; letter-spacing: -.01em; margin-top: 2px;
}

/* ===================================================================== */
/* Stage cards                                                           */
/* ===================================================================== */
.stage { display: grid; grid-template-columns: 48px 1fr; gap: 0; margin-bottom: 22px; }
.stage-rail { display: flex; flex-direction: column; align-items: center; }
.stage-num {
  width: 40px; height: 40px; flex-shrink: 0; border-radius: 10px;
  border: 1px solid var(--border); background: var(--bg-card);
  display: grid; place-items: center; font-family: var(--mono); font-weight: 700; font-size: 1.1rem;
  color: var(--accent); transition: .2s;
}
.rail-line { flex: 1; width: 2px; background: var(--border-soft); margin-top: 6px; }
.stage:last-of-type .rail-line { display: none; }
.is-done .stage-num { background: var(--accent); color: #1a1205; border-color: var(--accent); box-shadow: 0 0 16px var(--accent-glow); }

.stage-body {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
  padding: 24px 32px; margin-left: 14px; position: relative; transition: border-color .2s;
}
.stage-body::before {
  content: ""; position: absolute; left: -8px; top: 18px;
  width: 14px; height: 14px; background: var(--bg-card);
  border-left: 1px solid var(--border); border-bottom: 1px solid var(--border);
  transform: rotate(45deg);
}
.stage:hover .stage-body { border-color: #3a3a3a; }
.is-done .stage-body { border-color: rgba(234,179,8,0.35); }

.stage-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; }
.stage-tag {
  font-family: var(--mono); font-size: .62rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent-2); background: var(--accent-faint); border: 1px solid var(--border-soft);
  padding: 2px 8px; border-radius: 4px;
}
.stage-title { font-family: var(--display); font-weight: 900; font-size: 1.4rem; margin-top: 8px; letter-spacing: -.01em; }
.stage-meta { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.stage-time { font-family: var(--mono); font-size: .72rem; color: var(--text-muted); white-space: nowrap; }
.done-toggle {
  display: flex; align-items: center; gap: 7px; cursor: pointer; user-select: none;
  font-family: var(--mono); font-size: .72rem; text-transform: uppercase; letter-spacing: .1em;
  color: var(--text-muted); border: 1px solid var(--border); border-radius: 6px; padding: 5px 10px; transition: .15s;
}
.done-toggle:hover { border-color: var(--accent); color: var(--accent); }
.done-toggle input { accent-color: var(--accent); width: 14px; height: 14px; cursor: pointer; }
.is-done .done-toggle { color: var(--accent); border-color: var(--accent); }

.payoff { color: var(--text-sec); font-size: .96rem; margin: 16px 0 14px; }
.payoff b { color: var(--text); }

.concepts { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 18px; }
.chip {
  font-family: var(--mono); font-size: .72rem; color: var(--text-sec);
  background: var(--bg-elev); border: 1px solid var(--border-soft);
  padding: 4px 10px; border-radius: 999px;
}

/* ---------- code block ---------- */
.code-wrap { border: 1px solid var(--border); border-radius: 9px; overflow: hidden; background: var(--bg-code); margin-bottom: 16px; }
.code-top {
  display: flex; justify-content: space-between; align-items: center;
  padding: 7px 12px; background: var(--bg-elev); border-bottom: 1px solid var(--border);
}
.code-lang { font-family: var(--mono); font-size: .66rem; letter-spacing: .14em; text-transform: uppercase; color: var(--text-muted); }
.copy-btn {
  font-family: var(--mono); font-size: .68rem; background: transparent; color: var(--text-sec);
  border: 1px solid var(--border); border-radius: 5px; padding: 3px 10px; cursor: pointer; transition: .15s;
}
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }
pre.code { margin: 0; padding: 16px 18px; overflow-x: auto; }
pre.code code { font-size: .82rem; line-height: 1.65; white-space: pre; color: #d4d4d4; }

.t-ins { color: var(--t-ins); font-weight: 600; }
.t-reg { color: var(--t-reg); }
.t-num { color: var(--t-num); }
.t-str { color: var(--t-str); }
.t-com { color: var(--t-com); font-style: italic; }
.t-dir { color: var(--t-dir); }
.t-lbl { color: var(--t-lbl); }

/* ---------- exercise / note panels ---------- */
.panel { border: 1px solid var(--border-soft); border-radius: 9px; margin-bottom: 14px; overflow: hidden; }
.panel.ex { border-left: 3px solid var(--accent); }
.panel.nt { border-left: 3px solid var(--accent-2); background: rgba(180,83,9,0.04); }
.panel-h {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--text); padding: 9px 14px; background: var(--bg-elev); border-bottom: 1px solid var(--border-soft);
}
.panel-body { padding: 13px 16px; font-size: .9rem; color: var(--text-sec); }
pre.panel-body { font-family: var(--mono); font-size: .8rem; white-space: pre-wrap; line-height: 1.6; color: var(--text-sec); }
.panel.nt .panel-body { color: #d6c9b0; }

/* ===================================================================== */
/* Reference                                                             */
/* ===================================================================== */
.reference { margin: 50px 0 30px; }
.ref-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; margin-top: 16px; }
.ref-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px; }
.ref-card h3 { font-family: var(--display); font-size: 1.05rem; font-weight: 700; margin-bottom: 12px; }
.ref-build { grid-column: 1 / -1; }
.ref-table { width: 100%; border-collapse: collapse; font-size: .82rem; }
.ref-table th {
  text-align: left; font-family: var(--mono); font-size: .62rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--text-muted); padding: 6px 8px; border-bottom: 1px solid var(--border);
}
.ref-table td { padding: 6px 8px; border-bottom: 1px solid var(--border-soft); color: var(--text-sec); vertical-align: top; }
.ref-table .mono { font-family: var(--mono); color: var(--text); }
.ref-table .accent { color: var(--accent); font-weight: 600; }
.ref-foot { margin-top: 10px; font-size: .76rem; color: var(--text-muted); }
.ref-foot code { color: var(--accent); }

.bcmd { display: grid; grid-template-columns: 180px 1fr; gap: 14px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--border-soft); }
.bcmd:last-child { border-bottom: none; }
.bcmd-l { font-size: .82rem; color: var(--text-sec); }
.bcmd code {
  display: block; background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 6px;
  padding: 8px 12px; font-size: .8rem; color: var(--accent); overflow-x: auto;
}

/* ===================================================================== */
/* Responsive                                                            */
/* ===================================================================== */
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .jump { display: none; }
  .header-clock { display: none; }
}
@media (max-width: 560px) {
  .prog-mini, .social-row { display: none; }
  .stage { grid-template-columns: 34px 1fr; }
  .stage-num { width: 30px; height: 30px; font-size: .9rem; }
  .stage-body { padding: 18px 16px; }
  .bcmd { grid-template-columns: 1fr; gap: 6px; }
  .hero { padding-top: 48px; }
}

/* =====================================================================
   Carino Learn — multi-course platform additions
   ===================================================================== */

/* ---------- overview header (course chooser intro) ---------- */
.overview-head { max-width: 1000px; margin: 0 auto; padding: 54px 24px 26px; text-align: center; }
.overview-title {
  font-family: var(--display); font-weight: 900; letter-spacing: -.02em;
  font-size: clamp(2rem, 5.5vw, 3.4rem); line-height: 1.05; margin: 18px 0 14px;
}
.overview-title em {
  font-style: normal;
  background: linear-gradient(130deg, #fef08a 0%, #eab308 55%, #b45309 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.overview-sub { color: var(--text-sec); max-width: 680px; margin: 0 auto; font-size: 1.05rem; }
body.state-selected .overview-head { display: none; }

/* ---------- slice menu (chooser) ---------- */
.slice-menu { display: flex; width: 100%; }
body.state-overview .slice-menu {
  min-height: calc(100vh - var(--nav-h) - 220px);
  border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft);
}
.slice {
  flex: 1; position: relative; overflow: hidden; cursor: pointer;
  display: flex; align-items: center; justify-content: center; text-align: center;
  background: linear-gradient(180deg, #0e0e0e 0%, #090909 100%);
  border: none; border-right: 1px solid var(--border); color: inherit;
  font-family: inherit; transition: flex .45s cubic-bezier(.25,1,.5,1), background .3s;
}
.slice:last-child { border-right: none; }
.slice-bg {
  position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: .45s ease;
  background: radial-gradient(circle at 50% 45%, var(--accent-glow) 0%, transparent 62%);
}
body.state-overview .slice:hover { flex: 1.45; background: #121212; }
body.state-overview .slice:hover .slice-bg { opacity: 1; }
body.state-overview .slice:hover .slice-icon svg { transform: translateY(-4px) scale(1.08); }

.slice-inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 30px 22px; }
.slice-num { font-family: var(--display); font-size: 3rem; font-weight: 900; color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,.12); line-height: 1; }
.slice-icon svg { width: 42px; height: 42px; color: var(--accent); transition: transform .3s ease; }
.slice-title { font-family: var(--display); font-size: 1.7rem; font-weight: 900; letter-spacing: -.01em; }
.slice-blurb { font-size: .9rem; color: var(--text-sec); max-width: 230px; line-height: 1.5; }
.slice-prog { width: 150px; height: 5px; background: var(--bg-elev); border: 1px solid var(--border-soft); border-radius: 999px; overflow: hidden; }
.slice-prog-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--accent-2), var(--accent)); transition: width .45s ease; }
.slice-count { font-family: var(--mono); font-size: .7rem; color: var(--text-muted); letter-spacing: .08em; }

/* ---------- slice menu collapses to a tab bar when a course is open ---------- */
body.state-selected .slice-menu {
  position: sticky; top: var(--nav-h); z-index: 150; min-height: 0; height: 54px;
  background: var(--bg-header); border-bottom: 1px solid var(--border);
  overflow-x: auto; overflow-y: hidden; scrollbar-width: none;
}
body.state-selected .slice-menu::-webkit-scrollbar { display: none; }
body.state-selected .slice { flex: 0 0 auto; }
body.state-selected .slice-title { white-space: nowrap; }
body.state-selected .slice-menu .slice-num,
body.state-selected .slice-menu .slice-blurb,
body.state-selected .slice-menu .slice-prog { display: none; }
body.state-selected .slice-inner { flex-direction: row; gap: 10px; padding: 0 16px; }
body.state-selected .slice-icon svg { width: 17px; height: 17px; }
body.state-selected .slice-title { font-size: .92rem; font-weight: 700; }
body.state-selected .slice-count { font-size: .64rem; }
body.state-selected .slice:hover { background: #141414; }
body.state-selected .slice.active { background: #151515; box-shadow: inset 0 2px 0 var(--accent); }
body.state-selected .slice.active .slice-title { color: var(--accent); }
body.state-selected .slice.active .slice-icon svg { color: var(--accent); }
body.state-selected .slice:not(.active) .slice-icon svg { color: var(--text-muted); }
body.state-selected .slice:not(.active) .slice-title { color: var(--text-sec); }

/* ---------- show/hide course host ---------- */
body.state-overview .course-host { display: none; }
body.state-overview .prog-ring span { color: var(--text-muted); }

/* ---------- walkthrough (line-by-line) ---------- */
details.panel { display: block; }
summary.panel-h { cursor: pointer; list-style: none; user-select: none; display: flex; align-items: center; gap: 8px; }
summary.panel-h::-webkit-details-marker { display: none; }
details > summary.panel-h::before { content: "▸"; color: var(--accent); display: inline-block; transition: transform .2s ease; }
details[open] > summary.panel-h::before { transform: rotate(90deg); }
.panel.wk { border-left: 3px solid var(--t-reg); }
ol.walk { margin: 0; padding: 14px 18px 16px 36px; display: grid; gap: 10px; }
ol.walk li { font-size: .9rem; color: var(--text-sec); line-height: 1.6; padding-left: 4px; }
ol.walk li::marker { color: var(--accent); font-family: var(--mono); font-weight: 700; font-size: .8em; }
ol.walk b { color: var(--text); }

/* ---------- drills ---------- */
.panel.dr { border-left: 3px solid var(--ok); }
ul.drills { margin: 0; padding: 14px 18px 16px 32px; display: grid; gap: 9px; list-style: none; }
ul.drills li { position: relative; font-size: .88rem; color: var(--text-sec); line-height: 1.55; padding-left: 20px; }
ul.drills li::before { content: "›"; position: absolute; left: 4px; color: var(--ok); font-weight: 700; }

/* ---------- inline code inside prose ---------- */
.payoff code, .panel-body code, .walk code, .drills code,
.lede code, .overview-sub code, .ref-foot code, .stage-title code {
  background: var(--bg-elev); border: 1px solid var(--border-soft);
  padding: 1px 6px; border-radius: 4px; font-size: .85em; color: var(--accent);
}
.walk b code, .payoff b code { color: var(--accent); }

/* ---------- responsive: stack slices on small screens ---------- */
@media (max-width: 760px) {
  body.state-overview .slice-menu { flex-direction: column; min-height: 0; }
  body.state-overview .slice { border-right: none; border-bottom: 1px solid var(--border); min-height: 150px; }
  body.state-overview .slice:hover { flex: 1; }
  body.state-selected .slice-title { font-size: .8rem; }
  .overview-head { padding-top: 36px; }
}

/* =====================================================================
   Carino Learn — module grid, interactive labs & ISO document panels
   ===================================================================== */

/* ---------- overview: wrap slices into a module grid ---------- */
.overview-progress {
  display: inline-flex; align-items: baseline; gap: 12px; margin-top: 20px;
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 16px;
  background: var(--bg-card);
}
.overview-progress-lbl { font-family: var(--mono); font-size: .62rem; letter-spacing: .16em; text-transform: uppercase; color: var(--text-muted); }
.overview-progress-val { font-family: var(--mono); font-size: .88rem; font-weight: 700; color: var(--accent); }

body.state-overview .slice-menu { flex-wrap: wrap; }
body.state-overview .slice {
  flex: 1 1 300px; min-width: 260px; min-height: 340px; cursor: pointer;
  border-bottom: 1px solid var(--border);
}
.slice-ring {
  width: 44px; height: 44px; border-radius: 50%;
  background: conic-gradient(var(--accent) 0deg, var(--border) 0deg);
  display: grid; place-items: center;
}
.slice-ring span {
  width: 34px; height: 34px; border-radius: 50%; background: var(--bg-header);
  display: grid; place-items: center;
  font-family: var(--mono); font-size: .6rem; font-weight: 700; color: var(--accent);
}
.slice-done {
  display: inline-flex; align-items: center; gap: 7px; cursor: pointer; user-select: none;
  font-family: var(--mono); font-size: .64rem; text-transform: uppercase; letter-spacing: .1em;
  color: var(--text-muted); border: 1px solid var(--border); border-radius: 6px;
  padding: 5px 10px; margin-top: 4px; transition: .15s;
}
.slice-done:hover { border-color: var(--accent); color: var(--accent); }
.slice-done input { accent-color: var(--accent); width: 13px; height: 13px; cursor: pointer; }
.slice.is-complete .slice-done { color: var(--accent); border-color: var(--accent); }
.slice.is-complete .slice-title::after { content: " 🏁"; font-size: .8em; }
body.state-selected .slice-ring, body.state-selected .slice-done { display: none; }
body.state-selected .slice-menu { overflow-x: auto; }
body.state-selected .slice { min-width: 110px; }

/* ---------- interactive lab section ---------- */
.lab { border-bottom: 1px solid var(--border-soft); padding: 40px 24px; background: rgba(234,179,8,0.015); }
.lab-inner { max-width: 1100px; margin: 0 auto; }
.lab-head h2 { font-family: var(--display); font-weight: 900; font-size: 1.7rem; letter-spacing: -.01em; margin-top: 2px; }
.lab-blurb { color: var(--text-sec); font-size: .95rem; max-width: 760px; margin-top: 6px; }
.lab-blurb code { background: var(--bg-elev); border: 1px solid var(--border-soft); padding: 1px 6px; border-radius: 4px; font-size: .85em; color: var(--accent); }
.lab-mount { margin-top: 22px; }

/* ---------- shared viz chrome ---------- */
.viz { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.viz-ctrls { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
.viz-ctrls.wrap { row-gap: 8px; }
.viz-btn {
  font-family: var(--mono); font-size: .74rem; padding: 7px 14px; border-radius: 6px;
  border: 1px solid var(--border); background: transparent; color: var(--text-sec);
  cursor: pointer; transition: .15s;
}
.viz-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-faint); }
.viz-btn.primary { background: var(--accent); border-color: var(--accent); color: #1a1205; font-weight: 700; }
.viz-btn.mono { font-size: .7rem; }
.viz-status { font-family: var(--mono); font-size: .72rem; color: var(--text-muted); margin-left: auto; }
.viz-status.err { color: var(--live); }
.viz-status code, .viz-status b { color: var(--accent); }
.viz-panel-h {
  font-family: var(--mono); font-size: .62rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--accent); margin: 14px 0 8px; padding-bottom: 4px; border-bottom: 1px solid var(--border-soft);
}
.ln-dim { color: var(--text-muted); font-family: var(--mono); font-size: .76rem; }

/* ---------- assembly: CPU stepper ---------- */
.asm-cols { display: grid; grid-template-columns: 1.2fr 1fr; gap: 18px; }
.asm-prog { list-style: none; background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 8px; padding: 10px 0; }
.asm-line { display: flex; align-items: baseline; gap: 8px; padding: 4px 12px; font-size: .84rem; border-left: 3px solid transparent; }
.asm-line code { white-space: pre; color: #d4d4d4; }
.asm-line .asm-arrow { opacity: 0; color: var(--accent); font-size: .7rem; width: 12px; }
.asm-line.cur { background: var(--accent-faint); border-left-color: var(--accent); }
.asm-line.cur .asm-arrow { opacity: 1; }
.asm-cmt { color: var(--t-com); font-family: var(--mono); font-size: .7rem; font-style: italic; margin-left: auto; }
.asm-regs { display: grid; gap: 6px; }
.asm-reg { display: grid; grid-template-columns: 44px 1fr auto; gap: 10px; align-items: baseline;
  font-family: var(--mono); font-size: .82rem; padding: 5px 10px; border: 1px solid var(--border-soft); border-radius: 6px; transition: .2s; }
.asm-reg b { color: var(--t-reg); } .asm-reg code { color: var(--text); } .asm-reg span { color: var(--text-muted); font-size: .72rem; }
.asm-reg.hot { border-color: var(--accent); background: var(--accent-faint); }
.asm-reg.hot code { color: var(--accent); }
.asm-flags { display: flex; gap: 8px; }
.asm-flag { font-family: var(--mono); font-size: .76rem; padding: 4px 10px; border: 1px solid var(--border-soft); border-radius: 6px; color: var(--text-muted); transition: .2s; }
.asm-flag.on { color: var(--ok); border-color: var(--ok); }
.asm-flag.hot { background: var(--accent-faint); border-color: var(--accent); }
.asm-msg { margin-top: 12px; font-family: var(--mono); font-size: .74rem; color: var(--t-lbl); min-height: 2.4em; }

/* ---------- bash: fd wiring ---------- */
.bash-cols { display: grid; grid-template-columns: 1.4fr 1fr; gap: 18px; align-items: start; }
.bash-svg { width: 100%; height: auto; }
.bash-proc { fill: var(--bg-elev); stroke: var(--border); }
.bash-title { fill: var(--accent); font-family: var(--mono); font-size: 14px; font-weight: 700; }
.bash-fd { fill: #a3a3a3; font-family: var(--mono); font-size: 11px; }
.bash-fd.fd1 { fill: var(--t-str); } .bash-fd.fd2 { fill: #fca5a5; }
.bash-node { fill: var(--bg-code); stroke: var(--border); }
.bash-node.term { stroke: var(--accent-2); }
.bash-label { fill: #d4d4d4; font-family: var(--mono); font-size: 12px; }
.port.p1 { fill: var(--t-str); } .port.p2 { fill: #fca5a5; }
.wire { fill: none; stroke-width: 1.6; opacity: .6; }
.wire.w1 { stroke: var(--t-str); } .wire.w2 { stroke: #fca5a5; }
.dot.d1 { fill: var(--t-str); } .dot.d2 { fill: #f87171; }
.bash-sinks { display: grid; gap: 10px; }
.bash-sink { border: 1px solid var(--border-soft); border-radius: 8px; overflow: hidden; }
.bash-sink.empty { opacity: .45; }
.bash-sink-h { font-family: var(--mono); font-size: .66rem; letter-spacing: .1em; text-transform: uppercase; padding: 5px 10px; background: var(--bg-elev); color: var(--text-sec); }
.bash-sink-b { padding: 7px 10px; display: grid; gap: 2px; font-family: var(--mono); font-size: .72rem; }
.ln-out { color: var(--t-str); } .ln-err { color: #f87171; }

/* ---------- gnu: pipeline forge ---------- */
.gnu-slots { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.gnu-slot { display: grid; gap: 3px; }
.gnu-slot-name { font-family: var(--mono); font-size: .58rem; letter-spacing: .16em; text-transform: uppercase; color: var(--text-muted); }
.gnu-slot select {
  font-family: var(--mono); font-size: .76rem; background: var(--bg-code); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px; padding: 6px 8px; cursor: pointer;
}
.gnu-slot select:hover { border-color: var(--accent); }
.gnu-pipe { font-family: var(--mono); color: var(--accent); font-weight: 700; font-size: 1.1rem; align-self: end; padding-bottom: 6px; }
.gnu-cmdline { font-family: var(--mono); font-size: .8rem; background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 8px; padding: 9px 14px; margin-bottom: 14px; overflow-x: auto; white-space: nowrap; display: flex; align-items: center; gap: 8px; }
.gnu-cmdline code { flex: 1; min-width: 0; overflow-x: auto; }
.cmd-copy { flex: 0 0 auto; margin-left: auto; }
.gnu-cmdline .prompt { color: var(--accent); font-weight: 700; }
.gnu-cmdline code { color: #d4d4d4; }
.gnu-flow { display: flex; gap: 6px; align-items: stretch; overflow-x: auto; padding-bottom: 6px; }
.gnu-arrow { align-self: center; color: var(--accent); font-size: 1.2rem; flex-shrink: 0; }
.gnu-pane { border: 1px solid var(--border-soft); border-radius: 8px; min-width: 190px; flex-shrink: 0; display: flex; flex-direction: column; overflow: hidden; }
.gnu-pane-h { display: flex; justify-content: space-between; gap: 10px; padding: 5px 10px; background: var(--bg-elev); font-family: var(--mono); font-size: .64rem; }
.gnu-pane-h code { color: var(--accent); } .gnu-pane-h span { color: var(--text-muted); }
.gnu-pane-b { margin: 0; padding: 8px 10px; font-family: var(--mono); font-size: .68rem; line-height: 1.55; color: var(--text-sec); overflow: auto; max-height: 230px; flex: 1; }

/* ---------- linux: permission bits ---------- */
.lnx-bits { display: flex; gap: 14px; align-items: stretch; flex-wrap: wrap; }
.lnx-grp { border: 1px solid var(--border-soft); border-radius: 10px; padding: 10px 12px; text-align: center; }
.lnx-grp-h { font-family: var(--mono); font-size: .62rem; letter-spacing: .16em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 8px; }
.lnx-grp-b { display: flex; gap: 6px; }
.lnx-bit {
  width: 52px; padding: 8px 0 6px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--bg-code); color: var(--text-muted); cursor: pointer; transition: .15s;
  display: grid; gap: 2px; justify-items: center; font-family: var(--mono);
}
.lnx-bit b { font-size: 1rem; } .lnx-bit span { font-size: .64rem; }
.lnx-bit:hover { border-color: var(--accent); }
.lnx-bit.on { background: var(--accent); border-color: var(--accent); color: #1a1205; box-shadow: 0 0 12px var(--accent-glow); }
.lnx-grp-n { margin-top: 8px; font-family: var(--display); font-weight: 900; font-size: 1.3rem; color: var(--accent); }
.lnx-sep { width: 1px; background: var(--border-soft); }
.lnx-read { display: flex; gap: 12px; flex-wrap: wrap; margin: 16px 0; }
.lnx-out { display: flex; align-items: baseline; gap: 10px; border: 1px solid var(--border-soft); border-radius: 8px; padding: 8px 14px; background: var(--bg-code); }
.lnx-out span { font-family: var(--mono); font-size: .6rem; letter-spacing: .14em; text-transform: uppercase; color: var(--text-muted); }
.lnx-out code { font-size: .88rem; color: var(--accent); }
.lnx-users { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.lnx-user { border: 1px solid var(--border-soft); border-radius: 10px; padding: 12px 14px; }
.lnx-user-h { font-family: var(--mono); font-weight: 700; margin-bottom: 8px; }
.lnx-user-h em { font-style: normal; color: var(--text-muted); font-size: .7rem; font-weight: 400; margin-left: 6px; }
.lnx-can { display: inline-block; font-family: var(--mono); font-size: .7rem; padding: 3px 8px; border-radius: 5px; margin: 0 4px 4px 0; border: 1px solid var(--border-soft); }
.lnx-can.yes { color: var(--ok); border-color: rgba(34,197,94,.4); }
.lnx-can.no { color: var(--text-muted); }
.lnx-verdict { margin-top: 6px; font-family: var(--mono); font-size: .7rem; color: var(--text-sec); }
.lnx-verdict code { color: var(--accent); }

/* ---------- networking: packet journey ---------- */
.net-topo { display: flex; align-items: center; gap: 0; margin-bottom: 18px; }
.net-node { border: 1px solid var(--border); border-radius: 10px; padding: 10px 18px; font-family: var(--mono); font-size: .8rem; background: var(--bg-code); transition: .2s; white-space: nowrap; }
.net-node.cur { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 14px var(--accent-glow); }
.net-link { flex: 1; height: 2px; background: var(--border); position: relative; min-width: 40px; }
.net-link .net-pkt { display: none; }
.net-link.moving .net-pkt {
  display: block; position: absolute; top: -10px; color: var(--accent); font-size: .9rem;
  animation: pkt-slide 1.2s ease-in-out infinite;
}
@keyframes pkt-slide { from { left: 0; } to { left: calc(100% - 14px); } }
.net-stack-wrap { display: flex; justify-content: center; }
.net-stack { max-width: 560px; width: 100%; }
.net-empty { text-align: center; font-family: var(--mono); color: var(--text-muted); padding: 30px; border: 1px dashed var(--border); border-radius: 10px; }
.net-layer { border: 1px solid; border-radius: 10px; padding: 10px 12px 12px; transition: .2s; }
.net-layer + .net-data, .net-layer .net-layer, .net-layer .net-data { margin-top: 8px; }
.net-layer-h { font-family: var(--mono); font-size: .66rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 6px; }
.net-layer-f { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 2px; }
.net-layer-f code { font-size: .68rem; background: rgba(0,0,0,.35); border-radius: 4px; padding: 2px 7px; color: var(--text-sec); }
.net-layer.hot { box-shadow: 0 0 0 1px currentColor, 0 0 18px rgba(234,179,8,.12); }
.l-eth  { border-color: #b45309; } .l-eth  > .net-layer-h { color: #fdba74; }
.l-ip   { border-color: #3b82f6; } .l-ip   > .net-layer-h { color: #93c5fd; }
.l-tcp  { border-color: #06b6d4; } .l-tcp  > .net-layer-h { color: #67e8f9; }
.l-http { border-color: #22c55e; } .l-http > .net-layer-h { color: #86efac; }
.net-data { font-family: var(--mono); font-size: .7rem; color: var(--text-muted); text-align: center; }
.net-say { margin-top: 16px; font-size: .92rem; color: var(--text-sec); max-width: 720px; }
.net-say code { background: var(--bg-elev); border: 1px solid var(--border-soft); padding: 1px 6px; border-radius: 4px; font-size: .85em; color: var(--accent); }
.net-say b { color: var(--text); }

/* ---------- browser: page-load pipeline ---------- */
.br-phases { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; margin-bottom: 16px; }
.br-phase { font-family: var(--mono); font-size: .7rem; padding: 6px 11px; border-radius: 6px; border: 1px solid var(--border); background: transparent; color: var(--text-muted); cursor: pointer; transition: .15s; }
.br-phase:hover { border-color: var(--accent); color: var(--accent); }
.br-phase.done { color: var(--accent-2); border-color: rgba(180,83,9,.5); }
.br-phase.cur { background: var(--accent); border-color: var(--accent); color: #1a1205; font-weight: 700; }
.br-sep { color: var(--text-muted); font-size: .7rem; }
.br-cols { display: grid; grid-template-columns: 1.3fr 1fr; gap: 18px; align-items: start; }
.br-art { min-height: 92px; display: flex; align-items: center; }
.br-url { font-family: var(--mono); font-size: 1rem; background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 999px; padding: 10px 18px; }
.u-scheme { color: var(--t-str); } .u-host { color: var(--accent); font-weight: 700; } .u-path { color: var(--t-reg); } .u-port { color: var(--text-muted); }
.br-kv { display: flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: .88rem; flex-wrap: wrap; }
.br-kv code { background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 6px; padding: 6px 12px; color: var(--accent); }
.br-arrow { color: var(--text-muted); font-size: .72rem; }
.br-shake { display: grid; gap: 6px; font-family: var(--mono); font-size: .82rem; }
.br-shake span { padding: 5px 12px; border: 1px solid var(--border-soft); border-radius: 6px; background: var(--bg-code); width: max-content; color: var(--t-reg); }
.br-shake span:nth-child(2) { justify-self: end; color: var(--t-str); }
.br-shake span:last-child { color: var(--accent); }
.br-http { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; width: 100%; }
.br-http pre { margin: 0; font-family: var(--mono); font-size: .7rem; background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 8px; padding: 10px 12px; color: var(--text-sec); overflow-x: auto; }
.br-say { font-size: .92rem; color: var(--text-sec); margin-top: 12px; }
.br-say code { background: var(--bg-elev); border: 1px solid var(--border-soft); padding: 1px 6px; border-radius: 4px; font-size: .85em; color: var(--accent); }
.br-say b { color: var(--text); }
.br-dom { font-family: var(--mono); font-size: .76rem; display: grid; gap: 3px; min-height: 40px; }
.br-node { color: var(--t-reg); padding: 1px 8px; border-left: 1px solid var(--border-soft); }
.br-node.new { color: var(--accent); background: var(--accent-faint); border-radius: 4px; }
.br-blank { color: var(--text-muted); font-family: var(--mono); font-size: .72rem; }
.br-page { border: 1px solid var(--border-soft); border-radius: 8px; min-height: 110px; padding: 12px; background: var(--bg-code); display: grid; place-items: center; }
.br-render { width: 100%; display: grid; gap: 8px; animation: br-fade .5s ease; }
@keyframes br-fade { from { opacity: 0; } to { opacity: 1; } }
.br-r-h1 { font-family: var(--display); font-weight: 900; font-size: .95rem; }
.br-r-p { height: 7px; border-radius: 3px; background: var(--bg-elev); border: 1px solid var(--border-soft); }
.br-r-p.short { width: 65%; }
.br-r-btn { width: max-content; font-family: var(--mono); font-size: .62rem; font-weight: 700; color: #1a1205; background: var(--accent); border-radius: 5px; padding: 4px 12px; }

/* ---------- regex: live pattern lab ---------- */
.rx-bar { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.rx-delim { font-family: var(--mono); font-size: 1.3rem; color: var(--accent); font-weight: 700; }
.rx-input {
  flex: 1; min-width: 220px; font-family: var(--mono); font-size: .92rem;
  background: var(--bg-code); color: var(--t-lbl); border: 1px solid var(--border);
  border-radius: 7px; padding: 9px 13px; outline: none; transition: border-color .15s;
}
.rx-input:focus { border-color: var(--accent); }
.rx-flag { display: inline-flex; align-items: center; gap: 5px; font-family: var(--mono); font-size: .8rem; color: var(--text-sec); cursor: pointer; }
.rx-flag input { accent-color: var(--accent); }
.rx-text { margin: 0 0 6px; font-family: var(--mono); font-size: .84rem; line-height: 1.9; background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 8px; padding: 14px 16px; white-space: pre-wrap; word-break: break-word; color: var(--text-sec); }
.rx-text mark { border-radius: 4px; padding: 2px 3px; font-weight: 700; }
.rx-text mark.rx-m0 { background: rgba(234,179,8,.28); color: #fef08a; outline: 1px solid rgba(234,179,8,.5); }
.rx-text mark.rx-m1 { background: rgba(125,211,252,.22); color: #bae6fd; outline: 1px solid rgba(125,211,252,.45); }
.rx-tokens { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 8px; }
.rx-tok { display: flex; align-items: baseline; gap: 10px; border: 1px solid var(--border-soft); border-radius: 7px; padding: 7px 11px; }
.rx-tok code { font-family: var(--mono); color: var(--accent); font-weight: 700; font-size: .84rem; white-space: nowrap; }
.rx-tok span { font-size: .76rem; color: var(--text-sec); }

/* ---------- ISO 27001: PDCA wheel + Annex A map ---------- */
.iso-top { display: grid; grid-template-columns: 320px 1fr; gap: 26px; align-items: center; }
.iso-wheel { width: 100%; max-width: 320px; }
.iso-q { cursor: pointer; opacity: .38; transition: .2s; stroke: var(--bg-card); stroke-width: 2; }
.iso-q:hover { opacity: .7; }
.iso-q.cur { opacity: 1; }
.iso-q.plan  { fill: #eab308; } .iso-q.do { fill: #3b82f6; }
.iso-q.check { fill: #22c55e; } .iso-q.act { fill: #b45309; }
.iso-qlbl { fill: #0a0a0a; font-family: var(--display); font-weight: 900; font-size: 17px; cursor: pointer; pointer-events: none; }
.iso-center { fill: var(--accent); font-family: var(--display); font-weight: 900; font-size: 24px; }
.iso-center-sub { fill: #8a8a8a; font-family: var(--mono); font-size: 9px; letter-spacing: .12em; text-transform: uppercase; }
.iso-arrowhead { fill: none; stroke: var(--text-muted); stroke-width: 2; stroke-linecap: round; }
.iso-phase-k { font-family: var(--display); font-weight: 900; font-size: 1.6rem; }
.iso-phase-k.plan { color: #eab308; } .iso-phase-k.do { color: #60a5fa; }
.iso-phase-k.check { color: #4ade80; } .iso-phase-k.act { color: #fdba74; }
.iso-phase-c { font-family: var(--mono); font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--text-muted); margin: 2px 0 10px; }
.iso-phase-d { color: var(--text-sec); font-size: .92rem; }
.iso-phase-docs { margin-top: 10px; font-size: .8rem; color: var(--text-muted); border-left: 3px solid var(--accent); padding: 6px 12px; background: var(--accent-faint); border-radius: 0 6px 6px 0; }
.iso-phase-docs b { color: var(--text-sec); }
.iso-total { color: var(--text-sec); text-transform: none; letter-spacing: 0; }
.iso-fams { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 14px; }
.iso-fam { border: 1px solid var(--border-soft); border-radius: 10px; padding: 12px 14px; }
.iso-fam-h { display: flex; justify-content: space-between; align-items: baseline; font-family: var(--display); font-weight: 700; font-size: .95rem; }
.iso-fam-n { font-family: var(--mono); font-size: .7rem; color: var(--accent); }
.iso-fam-bar { height: 4px; border-radius: 999px; background: var(--bg-elev); margin: 8px 0 10px; overflow: hidden; }
.iso-fam-bar div { height: 100%; background: linear-gradient(90deg, var(--accent-2), var(--accent)); transition: width .3s; }
.iso-ctrls { display: flex; flex-wrap: wrap; gap: 5px; max-height: 260px; overflow-y: auto; }
.iso-ctl {
  font-family: var(--mono); font-size: .62rem; text-align: left; line-height: 1.3;
  border: 1px solid var(--border-soft); border-radius: 5px; padding: 3px 8px;
  background: var(--bg-code); color: var(--text-muted); cursor: pointer; transition: .12s;
}
.iso-ctl b { color: var(--text-sec); }
.iso-ctl:hover { border-color: var(--accent); color: var(--text-sec); }
.iso-ctl.on { background: var(--accent-faint); border-color: var(--accent); color: var(--accent); }
.iso-ctl.on b { color: var(--accent); }

/* ---------- ISO template document panels ---------- */
.tpl-stack { border: 1px solid var(--border-soft); border-left: 3px solid var(--accent); border-radius: 9px; margin-bottom: 14px; overflow: hidden; }
.tpl-stack-h {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--text); padding: 9px 14px; background: var(--bg-elev); border-bottom: 1px solid var(--border-soft);
}
.tpl-count { display: inline-block; background: var(--accent); color: #1a1205; font-weight: 700; border-radius: 999px; padding: 0 8px; margin-left: 6px; }
.tpl-stack .panel.tpl { border: none; border-top: 1px solid var(--border-soft); border-radius: 0; margin: 0; }
.panel.tpl summary.panel-h { text-transform: none; letter-spacing: 0; font-size: .82rem; }
.tpl-name { font-weight: 700; }
.tpl-annex { font-family: var(--mono); font-size: .64rem; color: var(--t-reg); border: 1px solid var(--border-soft); border-radius: 4px; padding: 1px 7px; }
.tpl-tier { font-family: var(--mono); font-size: .6rem; text-transform: uppercase; letter-spacing: .1em; border-radius: 4px; padding: 2px 7px; margin-left: auto; }
.tier-mandatory { color: #1a1205; background: var(--accent); font-weight: 700; }
.tier-recommended { color: #bfdbfe; background: rgba(59,130,246,.2); border: 1px solid rgba(59,130,246,.4); }
.tier-optional { color: var(--text-muted); border: 1px solid var(--border); }
.tpl-inner { padding: 12px 16px; }
.tpl-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 14px; margin-bottom: 10px; }
.tpl-desc { font-size: .84rem; color: var(--text-sec); }
.tpl-body {
  margin: 0; font-family: var(--mono); font-size: .74rem; line-height: 1.6; color: var(--text-sec);
  background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 8px;
  padding: 14px 16px; max-height: 480px; overflow: auto; white-space: pre;
}

/* =====================================================================
   Inline mini-labs (js/labs.js) — smaller interactive widgets that live
   inside the roadmap, right after the stage that teaches their topic
   ===================================================================== */
.lab-inline { border: 1px solid var(--border); border-radius: 14px; padding: 20px 22px 22px; margin: 6px 0 34px 0; background: rgba(234,179,8,0.02); }
.lab-inline .lab-head h2 { font-family: var(--display); font-weight: 900; font-size: 1.25rem; letter-spacing: -.01em; margin-top: 2px; }
.lab-inline .lab-mount { margin-top: 16px; }
.lab-inline .viz { padding: 16px; }

/* toggle & verdict states for viz buttons */
.viz-btn.on { border-color: var(--accent); color: var(--accent); background: var(--accent-faint); box-shadow: 0 0 10px var(--accent-glow); }
.viz-btn.ok { border-color: rgba(34,197,94,.6); color: var(--ok); background: rgba(34,197,94,.08); }
.viz-btn.bad { border-color: rgba(239,68,68,.6); color: #fca5a5; background: rgba(239,68,68,.08); }
.viz-btn:disabled { cursor: default; opacity: .9; }

/* asm: the stack, live */
.stk-cols { display: grid; grid-template-columns: 1.1fr 1fr; gap: 18px; align-items: start; }
.stk-mem { display: grid; gap: 4px; background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 8px; padding: 12px; }
.stk-hint { font-family: var(--mono); font-size: .62rem; letter-spacing: .12em; text-transform: uppercase; color: var(--text-muted); text-align: center; padding: 2px 0; }
.stk-cell { display: flex; align-items: center; gap: 12px; font-family: var(--mono); font-size: .78rem; padding: 5px 10px; border: 1px dashed var(--border-soft); border-radius: 6px; color: var(--text-muted); }
.stk-cell.used { border-style: solid; color: var(--text); background: rgba(234,179,8,.04); }
.stk-cell.top { border-color: var(--accent); background: var(--accent-faint); }
.stk-cell.ra .stk-val { color: var(--t-str); }
.stk-addr { color: var(--text-muted); font-size: .68rem; }
.stk-val { flex: 1; }
.stk-rsp { color: var(--accent); font-weight: 700; }

/* asm: syscall loadout */
.sys-cols { display: grid; grid-template-columns: 1fr 1.3fr; gap: 18px; align-items: start; }
.sys-code { margin: 0; font-family: var(--mono); font-size: .84rem; line-height: 1.7; background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 8px; padding: 14px 16px; color: #d4d4d4; }
.asm-msg { font-size: .88rem; color: var(--text-sec); margin-top: 10px; }
.asm-msg code { background: var(--bg-elev); border: 1px solid var(--border-soft); padding: 1px 6px; border-radius: 4px; font-size: .85em; color: var(--accent); }
.asm-msg b { color: var(--text); }

/* bash: quoting x-ray */
.qx-argv { display: flex; gap: 10px; flex-wrap: wrap; margin: 6px 0 4px; }
.qx-cell { border: 1px solid var(--border); border-radius: 8px; padding: 8px 14px; background: var(--bg-code); display: grid; gap: 3px; }
.qx-cell span { font-family: var(--mono); font-size: .6rem; letter-spacing: .12em; text-transform: uppercase; color: var(--text-muted); }
.qx-cell code { font-size: .88rem; color: var(--accent); }
.qx-dir { margin-top: 12px; font-family: var(--mono); font-size: .72rem; color: var(--text-muted); }
.qx-dir code { color: var(--text-sec); background: var(--bg-elev); border: 1px solid var(--border-soft); border-radius: 4px; padding: 1px 7px; }

/* bash: exit-code chain */
.ec-chain { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 14px 0 4px; }
.ec-node { border: 1px solid var(--border); border-radius: 10px; padding: 9px 14px; display: grid; gap: 2px; font-family: var(--mono); }
.ec-node code { font-size: .82rem; } .ec-node span { font-size: .64rem; color: var(--text-muted); }
.ec-node.ok { border-color: rgba(34,197,94,.55); } .ec-node.ok span { color: var(--ok); }
.ec-node.fail { border-color: rgba(239,68,68,.55); } .ec-node.fail span { color: #fca5a5; }
.ec-node.skip { opacity: .38; border-style: dashed; }
.ec-op { font-family: var(--mono); font-weight: 700; color: var(--accent); font-size: .95rem; }
.ec-final { margin-left: auto; font-family: var(--mono); font-size: .8rem; color: var(--accent); border: 1px solid var(--border-soft); border-radius: 999px; padding: 5px 14px; }

/* linux: systemd status */
.sd-status { margin: 4px 0 6px; font-family: var(--mono); font-size: .78rem; line-height: 1.7; background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 8px; padding: 14px 16px; color: var(--text-sec); white-space: pre-wrap; }
.sd-green { color: var(--ok); } .sd-red { color: #f87171; } .sd-dim { color: var(--text-muted); }
.sd-status b { color: var(--text); }

/* linux: signals / ps table */
.ps-table { border: 1px solid var(--border-soft); border-radius: 8px; overflow: hidden; margin-bottom: 12px; background: var(--bg-code); }
.ps-row { display: grid; grid-template-columns: 64px 52px 1.1fr 1.4fr; gap: 10px; padding: 7px 14px; font-family: var(--mono); font-size: .78rem; cursor: pointer; border-left: 3px solid transparent; }
.ps-row.ps-head { cursor: default; color: var(--text-muted); font-size: .62rem; letter-spacing: .12em; text-transform: uppercase; border-bottom: 1px solid var(--border-soft); }
.ps-row:not(.ps-head):hover { background: var(--accent-faint); }
.ps-row.sel { border-left-color: var(--accent); background: var(--accent-faint); }
.ps-row.dead { opacity: .45; text-decoration: line-through; }
.ps-note { color: var(--text-muted); font-size: .68rem; }

/* networking: subnet splitter */
.sub-slider { display: inline-flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: .8rem; color: var(--text-sec); }
.sub-slider b { color: var(--accent); min-width: 2ch; }
.sub-slider input[type="range"] { accent-color: var(--accent); width: 160px; }
.sub-bin { background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 8px; padding: 12px 14px; margin-bottom: 14px; }
.sub-ipline { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; font-family: var(--mono); }
.sub-ipline code { color: var(--accent); font-size: .9rem; }
.sub-ipline span { font-size: .66rem; color: var(--text-muted); display: inline-flex; align-items: center; gap: 6px; }
.sub-key { display: inline-block; width: 10px; height: 10px; border-radius: 2px; }
.sub-key.net { background: var(--accent); } .sub-key.host { background: var(--border); }
.sub-bits { display: flex; flex-wrap: wrap; gap: 2px; font-family: var(--mono); font-size: .8rem; }
.sub-bit { width: 17px; text-align: center; border-radius: 3px; padding: 2px 0; }
.sub-bit.net { background: var(--accent-faint); color: var(--accent); outline: 1px solid rgba(234,179,8,.35); }
.sub-bit.host { color: var(--text-muted); background: rgba(255,255,255,.02); }
.sub-dot { color: var(--text-muted); align-self: center; }

/* networking: firewall */
.fw-rows { display: grid; gap: 8px; margin-bottom: 16px; }
.fw-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; border: 1px solid var(--border-soft); border-radius: 8px; padding: 8px 12px; }
.fw-port { font-family: var(--mono); color: var(--accent); font-size: .84rem; min-width: 74px; }
.fw-svc { font-family: var(--mono); font-size: .74rem; color: var(--text-muted); min-width: 70px; }

/* browser: event loop */
.el-cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr 0.8fr; gap: 12px; align-items: start; }
.el-code { margin: 0; font-family: var(--mono); font-size: .74rem; line-height: 1.8; background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 8px; padding: 12px 14px; color: var(--text-sec); overflow-x: auto; }
.el-code .el-cur { color: var(--accent); background: var(--accent-faint); border-radius: 3px; }
.el-q { min-width: 0; }
.el-list { display: grid; gap: 5px; min-height: 34px; }
.el-item { font-family: var(--mono); font-size: .7rem; border: 1px solid var(--border-soft); border-radius: 6px; padding: 5px 9px; color: var(--text-sec); background: var(--bg-code); }
.el-item.hot { border-color: var(--accent); color: var(--accent); background: var(--accent-faint); }
.el-out .el-item { color: var(--t-str); }

/* browser: same-origin */
.so-urls { display: grid; gap: 10px; margin-bottom: 14px; }
.so-url { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.so-url > code { font-family: var(--mono); font-size: .88rem; color: var(--accent); background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 7px; padding: 7px 13px; }
.so-url select, .gnu-slot select { font-family: var(--mono); font-size: .8rem; background: var(--bg-code); color: var(--text); border: 1px solid var(--border); border-radius: 7px; padding: 7px 10px; }
.so-sep { color: var(--text-muted); }
.soviz .lnx-users { margin-top: 14px; }

/* iso: risk matrix */
.rk-cols { display: grid; grid-template-columns: auto 1fr; gap: 22px; align-items: start; margin-top: 6px; }
.rk-grid { display: grid; grid-template-columns: repeat(5, 44px); gap: 4px; position: relative; padding: 0 0 22px 22px; }
.rk-cell { width: 44px; height: 44px; border-radius: 6px; position: relative; opacity: .8; }
.rk-cell.g { background: rgba(34,197,94,.16); outline: 1px solid rgba(34,197,94,.25); }
.rk-cell.y { background: rgba(234,179,8,.16); outline: 1px solid rgba(234,179,8,.3); }
.rk-cell.r { background: rgba(239,68,68,.18); outline: 1px solid rgba(239,68,68,.35); }
.rk-dot { position: absolute; inset: 0; margin: auto; width: 16px; height: 16px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent-glow); }
.rk-dot.resid { background: var(--ok); box-shadow: 0 0 12px rgba(34,197,94,.5); width: 12px; height: 12px; }
.rk-axis-y { position: absolute; left: 0; top: 50%; transform: rotate(-90deg) translateX(60%); transform-origin: left; font-family: var(--mono); font-size: .6rem; letter-spacing: .14em; text-transform: uppercase; color: var(--text-muted); }
.rk-axis-x { position: absolute; bottom: 0; left: 22px; font-family: var(--mono); font-size: .6rem; letter-spacing: .14em; text-transform: uppercase; color: var(--text-muted); }
.rk-side { display: grid; gap: 12px; justify-items: start; }

/* iso: audit verdicts */
.aud-card { border: 1px solid var(--border-soft); border-radius: 10px; padding: 14px 16px; margin-bottom: 12px; }
.aud-f { font-size: .9rem; color: var(--text-sec); margin-bottom: 10px; }

/* dicom: HL7 dissector */
.hl7-paste { width: 100%; font-family: var(--mono); font-size: .78rem; line-height: 1.7; background: var(--bg-code); color: var(--text-sec); border: 1px solid var(--border); border-radius: 8px; padding: 10px 14px; margin-bottom: 14px; resize: vertical; outline: none; }
.hl7-paste:focus { border-color: var(--accent); }
.hl7-msg { background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 8px; padding: 12px 14px; overflow-x: auto; margin-bottom: 14px; }
.hl7-line { white-space: nowrap; font-family: var(--mono); font-size: .78rem; line-height: 2.1; }
.hl7-seg { color: var(--t-ins); font-weight: 700; letter-spacing: .04em; }
.hl7-sep { color: var(--accent); opacity: .55; margin: 0 1px; }
.hl7-f { font-family: var(--mono); font-size: .78rem; background: transparent; border: 1px solid transparent; border-radius: 4px; padding: 1px 3px; color: var(--text-sec); cursor: pointer; transition: .12s; }
.hl7-f:hover { border-color: var(--accent); color: var(--accent); }
.hl7-f.sel { background: var(--accent-faint); border-color: var(--accent); color: var(--accent); }
.hl7-f.empty { color: var(--text-muted); opacity: .5; }
.hl7-info { border: 1px solid var(--border-soft); border-radius: 10px; padding: 12px 16px; }
.hl7-info-h { font-family: var(--mono); font-size: .84rem; margin-bottom: 6px; }
.hl7-info-h code { color: var(--accent); font-weight: 700; margin-right: 8px; }
.hl7-info-v { font-family: var(--mono); font-size: .76rem; color: var(--text-muted); margin-bottom: 10px; }
.hl7-info-v code { color: var(--text-sec); }

/* dicom: header inspector */
.dcm-rows { background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 8px; overflow-x: auto; margin-bottom: 12px; }
.dcm-row { display: grid; grid-template-columns: 110px 34px 1fr 1.2fr; gap: 12px; padding: 5px 14px; font-size: .78rem; cursor: pointer; border-left: 3px solid transparent; align-items: baseline; }
.dcm-row:hover { background: var(--accent-faint); }
.dcm-row.sel { border-left-color: var(--accent); background: var(--accent-faint); }
.dcm-row.phi .dcm-val { color: #fca5a5; }
.dcm-row.phi.clean .dcm-val { color: var(--ok); }
.dcm-tag { font-family: var(--mono); color: var(--t-reg); }
.dcm-vr { font-family: var(--mono); color: var(--t-ins); }
.dcm-name { font-family: var(--mono); color: var(--text-sec); }
.dcm-val { font-family: var(--mono); color: var(--text); }

/* dicom: RIS order lifecycle */
.ris-cols { display: grid; grid-template-columns: 1fr 1.4fr; gap: 14px; align-items: start; margin-top: 4px; }
.ris-msg code { font-family: var(--mono); font-size: .78rem; color: var(--accent); }
.ris-msg span { font-size: .82rem; color: var(--text-sec); }
.br-phase.skip { opacity: .35; text-decoration: line-through; border-style: dashed; }

/* dicom: film printer */
.pr-cols { display: grid; grid-template-columns: 1.5fr 1fr; gap: 18px; align-items: start; }
.film-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 8px; padding: 10px; }
.film-cell { aspect-ratio: 1; display: grid; place-items: center; border: 1px dashed var(--border); border-radius: 6px; font-family: var(--mono); font-size: .8rem; color: var(--text-muted); transition: .2s; }
.film-cell.set { border-style: solid; border-color: var(--accent); color: var(--accent); background: var(--accent-faint); font-size: 1.2rem; }
.film-cell.printed { border-color: rgba(34,197,94,.6); color: var(--ok); background: rgba(34,197,94,.08); box-shadow: 0 0 10px rgba(34,197,94,.15); }

/* dicom: PACS conversation */
.pacs-log { display: grid; gap: 6px; margin: 14px 0 4px; min-height: 40px; }
.pacs-line { display: flex; gap: 10px; align-items: flex-start; max-width: 88%; }
.pacs-line.rt { margin-left: auto; flex-direction: row-reverse; }
.pacs-line pre { margin: 0; font-family: var(--mono); font-size: .72rem; line-height: 1.6; background: var(--bg-code); border: 1px solid var(--border-soft); border-radius: 8px; padding: 7px 12px; color: var(--text-sec); white-space: pre-wrap; }
.pacs-line.hot pre { border-color: var(--accent); color: var(--text); }
.pacs-line.err pre { border-color: rgba(239,68,68,.6); color: #fca5a5; }
.pacs-dir { color: var(--accent); font-size: .8rem; margin-top: 5px; }
.net-node small { display: block; font-size: .6rem; color: var(--text-muted); }

/* ---------- lab & viz responsive ---------- */
@media (max-width: 860px) {
  .asm-cols, .bash-cols, .br-cols, .iso-top,
  .stk-cols, .sys-cols, .rk-cols, .ris-cols, .pr-cols { grid-template-columns: 1fr; }
  .el-cols { grid-template-columns: 1fr 1fr; }
  .el-code { grid-column: 1 / -1; }
  .asm-cmt { display: none; }
  .viz-status { margin-left: 0; width: 100%; }
}

/* keep hover growth sane inside the wrapped module grid */
body.state-overview .slice:hover { flex: 1.12 1 300px; }

/* ---------- narrow-screen overflow fixes ---------- */
.layout > *, .roadmap-col, .stage-body, .hero-inner,
.asm-cols > *, .bash-cols > *, .br-cols > *, .iso-top > *,
.stk-cols > *, .sys-cols > *, .el-cols > *, .rk-cols > *, .ris-cols > *, .pr-cols > *,
.tpl-inner, .lab-inner, .lab-mount, .viz, .lab-inline { min-width: 0; }
.stage-body { overflow: hidden; }
.asm-prog { overflow-x: auto; }
.net-topo { flex-wrap: wrap; row-gap: 10px; }
.net-layer-f code { word-break: break-all; }
.br-http { min-width: 0; }
@media (max-width: 560px) {
  .lab { padding: 28px 14px; }
  .viz { padding: 14px; }
  .lnx-bit { width: 42px; }
  .iso-wheel { max-width: 260px; margin: 0 auto; }
}