/* The Rules Under the Game - teen deep dive
   Scoped under .rutg. Reuses /css/tokens.css. No new global tokens.
   Calm, dark, serious. Gold accent only where it carries meaning. No neon. No em dashes in content. */

.rutg, .rutg * { box-sizing: border-box; }
.rutg {
  --rutg-good: var(--color-success, #2fbf71);
  --rutg-warn: var(--color-warning, #d9a236);
  --rutg-bad: var(--color-danger, #e5534b);
  --rutg-accent: var(--color-brand, #f7931a);
  --rutg-line: var(--color-border, #2d2f35);
  --rutg-surface: var(--color-surface, #1f2024);
  --rutg-surface2: var(--color-panel, #16181c);
  margin: 0;
  background: var(--color-bg, #0b0e14);
  color: var(--color-text, #f2f3f5);
  font-family: var(--font-sans, Inter, system-ui, sans-serif);
  line-height: 1.65;
  font-size: 1.02rem;
}
.rutg .container { max-width: 860px; margin: 0 auto; padding: 22px 20px 56px; }

.rutg a { color: var(--rutg-accent); }
.rutg strong { color: var(--color-text-strong, #fff); font-weight: 600; }

.rutg .skip-link { position: absolute; left: -9999px; }
.rutg .skip-link:focus {
  left: 0; top: 0; background: var(--rutg-accent); color: #16181c;
  padding: .45rem .85rem; z-index: 9999; font-weight: 700; border-radius: 0 0 3px 0;
}
.rutg .back-link {
  display: inline-flex; align-items: center; gap: .5rem; color: var(--rutg-accent);
  text-decoration: none; font-family: var(--font-mono, monospace); font-size: .76rem;
  letter-spacing: .05em; margin-bottom: 1.4rem;
}
.rutg .back-link:hover { text-decoration: underline; }

/* language toggle */
.rutg .langbar { display: flex; gap: 6px; justify-content: flex-end; margin: 0 0 1rem; }
.rutg .langbtn {
  cursor: pointer; font: inherit; font-family: var(--font-mono, monospace); font-size: .7rem;
  letter-spacing: .04em; background: var(--rutg-surface2); color: var(--color-muted, #a9aeb8);
  border: 1px solid var(--rutg-line); border-radius: var(--radius-pill, 20px); padding: 5px 13px; transition: border-color .15s, color .15s;
}
.rutg .langbtn:hover { border-color: var(--rutg-accent); color: var(--color-text, #f2f3f5); }
.rutg .langbtn:focus-visible { outline: 2px solid var(--rutg-accent); outline-offset: 2px; }
.rutg .langbtn.on { border-color: var(--rutg-accent); color: var(--rutg-accent); background: rgba(247, 147, 26, .1); cursor: default; }

.rutg .eyebrow {
  display: block; font-family: var(--font-mono, monospace); font-size: .7rem;
  letter-spacing: .18em; text-transform: uppercase; color: var(--rutg-accent); margin-bottom: .8rem;
}
.rutg h1 {
  font-family: var(--font-serif, 'Source Serif 4', Georgia, serif); font-weight: 700;
  font-size: clamp(2rem, 5vw, 2.8rem); line-height: 1.08; letter-spacing: -.01em; margin: 0 0 .7rem;
  color: var(--color-text-strong, #fff);
}
.rutg h1 .accent {
  background: linear-gradient(135deg, #f7931a 0%, #ffb13d 50%, #ffd400 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.rutg h2 {
  font-family: var(--font-serif, serif); font-weight: 600; font-size: clamp(1.3rem, 3vw, 1.7rem);
  color: var(--color-text-strong, #fff); margin: 2.2rem 0 .9rem;
}
.rutg h3 { font-size: 1.06rem; font-weight: 600; color: var(--color-text-strong, #fff); margin: 1.4rem 0 .5rem; }
.rutg .lede { font-size: 1.16rem; line-height: 1.5; max-width: 68ch; color: var(--color-text, #f2f3f5); }
.rutg p { margin: 0 0 1rem; }
.rutg .question {
  font-family: var(--font-serif, serif); font-style: italic; font-size: 1.18rem;
  color: var(--color-text-strong, #fff); margin: 0 0 1.2rem; padding-left: .9rem;
  border-left: 3px solid var(--rutg-accent);
}

/* generic panel */
.rutg .panel {
  background: var(--rutg-surface); border: 1px solid var(--rutg-line);
  border-radius: var(--radius-md, 4px); padding: 18px 20px; margin: 1.1rem 0;
}
.rutg .scenario { border-left: 3px solid var(--rutg-accent); }
.rutg .hint { font-size: .9rem; color: var(--color-muted, #a9aeb8); }
.rutg .label-mono {
  font-family: var(--font-mono, monospace); font-size: .66rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--color-muted, #a9aeb8);
}

/* tool shell */
.rutg .tool { margin: 1.4rem 0; }
.rutg .tool-head { display: flex; align-items: baseline; gap: .6rem; flex-wrap: wrap; margin-bottom: .7rem; }

/* budgets (module 1) */
.rutg .budgets { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 1rem 0 1.4rem; }
.rutg .budget { background: var(--rutg-surface); border: 1px solid var(--rutg-line); border-radius: var(--radius-md, 4px); padding: 12px 14px; }
.rutg .budget .bname { font-family: var(--font-mono, monospace); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; color: var(--color-muted, #a9aeb8); }
.rutg .budget .bval { font-size: 1.5rem; font-weight: 700; color: var(--color-text-strong, #fff); margin-top: 2px; }
.rutg .meter { height: 6px; border-radius: 3px; background: var(--rutg-line); margin-top: 8px; overflow: hidden; }
.rutg .meter > span { display: block; height: 100%; background: var(--rutg-accent); transition: width .2s ease; }
.rutg .budget.low .bval { color: var(--rutg-warn); }
.rutg .budget.empty .bval { color: var(--rutg-bad); }

/* choice options */
.rutg .options { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 10px; margin: 1rem 0; }
.rutg .opt {
  display: flex; flex-direction: column; gap: 4px; text-align: left; cursor: pointer;
  background: var(--rutg-surface); border: 1px solid var(--rutg-line); color: var(--color-text, #f2f3f5);
  border-radius: var(--radius-md, 4px); padding: 12px 14px; font: inherit; transition: border-color .15s, background .15s;
}
.rutg .opt:hover { border-color: var(--rutg-accent); }
.rutg .opt:focus-visible { outline: 2px solid var(--rutg-accent); outline-offset: 2px; }
.rutg .opt[aria-pressed="true"] { border-color: var(--rutg-accent); background: rgba(247, 147, 26, .1); }
.rutg .opt .opt-title { font-weight: 600; color: var(--color-text-strong, #fff); }
.rutg .opt .opt-cost { font-family: var(--font-mono, monospace); font-size: .72rem; color: var(--color-muted, #a9aeb8); }
.rutg .opt[disabled] { opacity: .55; cursor: not-allowed; }
.rutg .opt .opt-check { font-family: var(--font-mono, monospace); font-size: .68rem; color: var(--rutg-accent); min-height: .9rem; }
.rutg .opt .opt-reason { font-size: .76rem; color: var(--rutg-warn); }

/* primary button */
.rutg .btn {
  display: inline-flex; align-items: center; gap: .5rem; cursor: pointer; font: inherit; font-weight: 600;
  background: var(--rutg-accent); color: #16181c; border: 1px solid var(--rutg-accent);
  border-radius: var(--radius-button, 4px); padding: 10px 18px; transition: filter .15s;
}
.rutg .btn:hover { filter: brightness(1.08); }
.rutg .btn:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.rutg .btn.ghost { background: transparent; color: var(--rutg-accent); }
.rutg .btn.ghost:hover { background: rgba(247, 147, 26, .08); }
.rutg .btn[disabled] { opacity: .5; cursor: not-allowed; filter: none; }
.rutg .btnrow { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 1rem 0; }

/* segmented control / pills for selection and prediction */
.rutg .seg { display: flex; flex-wrap: wrap; gap: 8px; margin: .6rem 0 1rem; }
.rutg .pill {
  cursor: pointer; font: inherit; font-size: .9rem; background: var(--rutg-surface2);
  border: 1px solid var(--rutg-line); color: var(--color-text, #f2f3f5);
  border-radius: var(--radius-pill, 20px); padding: 7px 14px; transition: border-color .15s, color .15s;
}
.rutg .pill:hover { border-color: var(--rutg-accent); }
.rutg .pill:focus-visible { outline: 2px solid var(--rutg-accent); outline-offset: 2px; }
.rutg .pill[aria-pressed="true"] { border-color: var(--rutg-accent); color: var(--rutg-accent); background: rgba(247, 147, 26, .1); }

.rutg select {
  background: var(--rutg-surface2); color: var(--color-text, #f2f3f5); border: 1px solid var(--rutg-line);
  border-radius: var(--radius-md, 4px); padding: 9px 11px; font: inherit; font-size: .95rem; min-width: 200px; max-width: 100%;
}
.rutg select:focus-visible { outline: 2px solid var(--rutg-accent); outline-offset: 2px; }
.rutg .field { display: flex; flex-direction: column; gap: 5px; margin: .8rem 0; }
.rutg .field label { font-family: var(--font-mono, monospace); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; color: var(--color-muted, #a9aeb8); }

/* output / consequence */
.rutg .output { margin-top: 1.2rem; }
.rutg .out-block {
  background: var(--rutg-surface); border: 1px solid var(--rutg-line); border-left: 3px solid var(--color-muted, #8a8f98);
  border-radius: 0 var(--radius-md, 4px) var(--radius-md, 4px) 0; padding: 13px 16px; margin: 10px 0;
}
.rutg .out-block.gained { border-left-color: var(--rutg-good); }
.rutg .out-block.gaveup { border-left-color: var(--rutg-warn); }
.rutg .out-block.later { border-left-color: var(--rutg-bad); }
.rutg .out-block h4 { margin: 0 0 6px; font-size: .92rem; color: var(--color-text-strong, #fff); }
.rutg .out-block ul { margin: 0; padding-left: 1.1rem; }
.rutg .out-block li { margin: 3px 0; }
.rutg .out-block .icon { font-family: var(--font-mono, monospace); font-size: .66rem; letter-spacing: .08em; text-transform: uppercase; }

/* two-column compare (scoreboard, rule lab) */
.rutg .compare2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 1rem 0; }
.rutg .compare2 .col { background: var(--rutg-surface); border: 1px solid var(--rutg-line); border-radius: var(--radius-md, 4px); padding: 14px 16px; }
.rutg .compare2 .col h4 { margin: 0 0 .5rem; font-size: .82rem; font-family: var(--font-mono, monospace); letter-spacing: .06em; text-transform: uppercase; }
.rutg .compare2 .col.a h4 { color: var(--rutg-warn); }
.rutg .compare2 .col.b h4 { color: var(--rutg-good); }
.rutg .tradeoff { background: var(--rutg-surface2); border: 1px dashed var(--rutg-line); border-radius: var(--radius-md, 4px); padding: 11px 14px; margin: 8px 0 0; font-size: .92rem; color: var(--color-muted, #a9aeb8); }
.rutg .tradeoff b { color: var(--rutg-accent); }

/* incentive cells */
.rutg .cells { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; margin: 1rem 0; }
.rutg .cell { background: var(--rutg-surface); border: 1px solid var(--rutg-line); border-radius: var(--radius-md, 4px); padding: 12px 14px; }
.rutg .cell .ck { font-family: var(--font-mono, monospace); font-size: .64rem; letter-spacing: .08em; text-transform: uppercase; color: var(--color-muted, #a9aeb8); display: block; margin-bottom: 4px; }
.rutg .cell.benefit { border-left: 3px solid var(--rutg-good); }
.rutg .cell.pays { border-left: 3px solid var(--rutg-bad); }
.rutg .cell.time { border-left: 3px solid var(--rutg-warn); }

/* tables (trust map) */
.rutg .tablewrap { overflow-x: auto; border: 1px solid var(--rutg-line); border-radius: var(--radius-md, 4px); margin: 1rem 0; }
.rutg table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.rutg th, .rutg td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--rutg-line); vertical-align: top; }
.rutg thead th { background: var(--rutg-surface2); font-family: var(--font-mono, monospace); font-size: .64rem; letter-spacing: .07em; text-transform: uppercase; color: var(--color-muted, #a9aeb8); white-space: nowrap; }
.rutg tbody th { font-weight: 600; color: var(--color-text-strong, #fff); white-space: nowrap; }
.rutg .selfnote { color: var(--rutg-warn); font-size: .82rem; }

/* lesson reveal (act before naming) */
.rutg .lesson { margin-top: 1.6rem; }
.rutg .lesson[hidden] { display: none; }
.rutg .lesson .pattern { background: var(--rutg-surface); border: 1px solid var(--rutg-line); border-left: 3px solid var(--rutg-accent); border-radius: 0 var(--radius-md, 4px) var(--radius-md, 4px) 0; padding: 16px 18px; }
.rutg .lesson .concept { margin-top: 1rem; }
.rutg .lesson .concept .name { font-family: var(--font-mono, monospace); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--rutg-accent); }
.rutg .takeaway { font-family: var(--font-serif, serif); font-size: 1.12rem; color: var(--color-text-strong, #fff); border-top: 1px solid var(--rutg-line); padding-top: 1rem; margin-top: 1.4rem; }

/* reflection */
.rutg .reflect { margin: 1.6rem 0; }
.rutg .reflect .rprompt { background: var(--rutg-surface); border: 1px solid var(--rutg-line); border-radius: var(--radius-md, 4px); padding: 13px 16px; margin: 10px 0; }
.rutg .reflect .rk { font-family: var(--font-mono, monospace); font-size: .64rem; letter-spacing: .1em; text-transform: uppercase; color: var(--rutg-accent); display: block; margin-bottom: 5px; }
.rutg .reflect textarea {
  width: 100%; min-height: 70px; resize: vertical; margin-top: 8px; background: var(--rutg-surface2);
  color: var(--color-text, #f2f3f5); border: 1px solid var(--rutg-line); border-radius: var(--radius-md, 4px);
  padding: 9px 11px; font: inherit; font-size: .95rem; line-height: 1.5;
}
.rutg .reflect textarea:focus-visible { outline: 2px solid var(--rutg-accent); outline-offset: 1px; }
.rutg .reflect .rprompt[hidden] { display: none; }
.rutg .journal-note { font-size: .78rem; color: var(--color-muted, #a9aeb8); margin-top: 4px; }

/* module nav */
.rutg .modnav { display: flex; justify-content: space-between; gap: 10px; margin: 2.4rem 0 0; flex-wrap: wrap; }
.rutg .modnav a {
  flex: 1 1 200px; text-decoration: none; background: var(--rutg-surface); border: 1px solid var(--rutg-line);
  border-radius: var(--radius-md, 4px); padding: 13px 16px; color: var(--color-text, #f2f3f5); transition: border-color .15s;
}
.rutg .modnav a:hover { border-color: var(--rutg-accent); }
.rutg .modnav a.next { text-align: right; }
.rutg .modnav .nk { font-family: var(--font-mono, monospace); font-size: .64rem; letter-spacing: .08em; text-transform: uppercase; color: var(--color-muted, #a9aeb8); display: block; }
.rutg .modnav .nt { color: var(--color-text-strong, #fff); font-weight: 600; }

/* hub cards */
.rutg .modcards { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; margin: 1.4rem 0; }
.rutg .modcard { display: block; text-decoration: none; background: var(--rutg-surface); border: 1px solid var(--rutg-line); border-radius: var(--radius-md, 4px); padding: 18px; color: var(--color-text, #f2f3f5); transition: border-color .15s, transform .15s; }
.rutg .modcard:hover { border-color: var(--rutg-accent); transform: translateY(-2px); }
.rutg .modcard .num { font-family: var(--font-mono, monospace); font-size: .66rem; letter-spacing: .12em; text-transform: uppercase; color: var(--rutg-accent); }
.rutg .modcard .mt { font-family: var(--font-serif, serif); font-weight: 600; font-size: 1.1rem; color: var(--color-text-strong, #fff); margin: 6px 0; }
.rutg .modcard .mq { font-size: .9rem; color: var(--color-muted, #a9aeb8); }

/* glossary + misconceptions */
.rutg .glossary { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 10px; margin: 1.2rem 0; }
.rutg .gitem { background: var(--rutg-surface); border: 1px solid var(--rutg-line); border-radius: var(--radius-md, 4px); padding: 12px 14px; }
.rutg .gitem .gteen { font-weight: 600; color: var(--color-text-strong, #fff); }
.rutg .gitem .gadult { font-family: var(--font-mono, monospace); font-size: .66rem; letter-spacing: .06em; text-transform: uppercase; color: var(--rutg-accent); display: block; margin: 2px 0 5px; }
.rutg .gitem .gmean { font-size: .88rem; color: var(--color-muted, #a9aeb8); }

.rutg .miscard { background: var(--rutg-surface); border: 1px solid var(--rutg-line); border-radius: var(--radius-md, 4px); padding: 14px 16px; margin: 10px 0; }
.rutg .miscard .think { color: var(--color-text-strong, #fff); font-weight: 600; }
.rutg .miscard .think .think-pre { color: var(--rutg-warn); font-weight: 400; font-size: .82rem; }
.rutg .miscard dl { margin: 8px 0 0; display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; }
.rutg .miscard dt { font-family: var(--font-mono, monospace); font-size: .62rem; letter-spacing: .06em; text-transform: uppercase; color: var(--color-muted, #a9aeb8); padding-top: 3px; }
.rutg .miscard dd { margin: 0; font-size: .92rem; }

.rutg .note {
  background: var(--rutg-surface); border: 1px solid var(--rutg-line); border-left: 3px solid var(--color-muted, #8a8f98);
  border-radius: 0 var(--radius-md, 4px) var(--radius-md, 4px) 0; padding: 16px 18px; margin: 1.2rem 0; font-size: .95rem;
}

.rutg footer { text-align: center; padding: 2rem 1rem; margin-top: 2rem; border-top: 1px solid var(--rutg-line); color: var(--color-muted, #a9aeb8); font-size: .85rem; }
.rutg footer a { color: var(--rutg-accent); text-decoration: none; }

.rutg .ns-list { list-style: none; margin: 1rem 0; padding: 0; }
.rutg .ns-list li { margin: 8px 0; }
.rutg .ns-list a { font-weight: 600; }
.rutg .ns-list .nsnote { color: var(--color-muted, #a9aeb8); font-size: .9rem; }

.rutg .progress-dots { display: flex; gap: 6px; margin: 0 0 1rem; }
.rutg .progress-dots span { width: 8px; height: 8px; border-radius: 50%; background: var(--rutg-line); }
.rutg .progress-dots span.on { background: var(--rutg-accent); }

.rutg noscript .panel { border-left: 3px solid var(--rutg-warn); }

@media (max-width: 680px) {
  .rutg .container { padding: 16px 14px 44px; }
  .rutg .compare2 { grid-template-columns: 1fr; }
  .rutg .options { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .rutg * { transition: none !important; }
  .rutg .modcard:hover { transform: none; }
}