/* Prototype presentation; the shared model and standalone view stay independent. */
:root {
  --panel: #11161e;
  --panel-2: #1a222d;
  --line: #28333e;
  --line-strong: #536170;
  --text: #edf0f4;
  --article-text: #dce2e9;
  --muted: #a7b4c3;
  --accent: #43d4fa;
  --accent-strong: #ddf53b;
  --signal: #ff8963;
}

body { background: var(--bg); font-size: 16px; }
.horizon-shell { width: min(1200px, calc(100% - 48px)); padding-top: 24px; }
.site-header { margin-bottom: 48px; border: 0; }
.site-header__meta { color: var(--muted); }
.site-header__meta a:hover { color: var(--accent); }
.model-kicker { color: var(--accent-strong); font-size: .73rem; letter-spacing: .09em; }
h1 {
  max-width: 920px;
  margin: 14px 0 18px;
  color: var(--text);
  font-size: clamp(2.1rem, 4.6vw, 3.5rem);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -.045em;
  text-wrap: balance;
}
.deck { max-width: 730px; margin-bottom: 36px; font-size: 1rem; line-height: 1.65; }
h2 {
  color: var(--text);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 1.45rem;
  font-weight: 500;
  line-height: 1.3;
  text-transform: none;
  letter-spacing: -.025em;
}
.projection-panel, #assumptions-controls { padding: 28px; border: 0; }
.projection-panel { margin-bottom: 16px; }
.projection-panel > h2 { margin: 0 0 26px; }
#range-year { color: var(--accent-strong); }
.range-controls { top: 23px; right: 28px; gap: 5px; }
button {
  min-height: 38px;
  padding: 7px 12px;
  border-color: var(--line-strong);
  background: transparent;
  color: var(--text);
  font-size: .75rem;
  letter-spacing: 0;
  transition: background-color 120ms, border-color 120ms;
}
button:hover { background: var(--panel-2); border-color: var(--accent); color: var(--text); }
button[aria-pressed="true"] { background: var(--accent-strong); border-color: var(--accent-strong); color: #1b1d26; }
button:focus-visible, input:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
input[type="number"], input[type="date"] { min-height: 40px; padding: 8px; border-color: var(--line-strong); }
input:disabled { opacity: .5; }
input[type="range"] { accent-color: var(--accent-strong); }
#chart { margin: 0 0 24px; }
#chart text[fill="var(--accent)"] { fill: var(--text); }
.date-controls { gap: 12px; margin-bottom: 20px; padding: 12px 16px; border: 0; }
.date-controls label { color: var(--text); font-size: .8rem; }
#date-scrubber { flex: 1 1 240px; min-height: 44px; margin: 0 0 0 12px; }
.readouts { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin-top: 16px; border: 0; }
.readout,
.readout:nth-child(even),
.readout:nth-last-child(2):nth-child(even) {
  padding: 18px;
  border: 0;
  background: #1a222d;
  --readout-accent: var(--accent);
}
.readout:nth-child(1) { background: #222a17; }
.readout:nth-child(2) { background: #142c37; }
.readout dt {
  min-height: 2.8em;
  margin-bottom: 12px;
  color: var(--text);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: .83rem;
  line-height: 1.4;
  text-transform: none;
  letter-spacing: 0;
}
.readout dd { font-size: .76rem; line-height: 1.6; }
.readout input[type="number"] {
  display: block;
  width: 100%;
  margin-bottom: 3px;
  padding: 5px 0;
  border: 0;
  border-bottom: 1px solid #657182;
  background: transparent;
  color: var(--readout-accent);
  font-family: "IBM Plex Mono", monospace;
  font-size: 1.2rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}
.readout input:hover { border-bottom-color: var(--readout-accent); }
.readout input::placeholder { color: var(--readout-accent); opacity: 1; }
.readout.is-unbounded {
  background: var(--accent);
  --text: #101e28;
  --muted: #243d4a;
  --readout-accent: #101e28;
  color: var(--text);
}
.readout.is-unbounded input[type="number"] { border-bottom-color: #365f71; font-weight: 600; }
.readout.is-unbounded input::placeholder { color: var(--readout-accent); opacity: 1; }
.readout.is-unbounded input:focus-visible { outline-color: var(--text); }
.readout .muted { font-size: .75rem; }
.assumption { padding: 20px 24px; border: 0; background: #17251f; font-size: .92rem; }
.assumption strong { color: #54e5ac; }
.assumption small { font-size: .83rem; }
#assumptions-controls { margin-top: 32px; }
#assumptions-title { margin-bottom: 24px; color: var(--accent); }
.base-controls { gap: 0 24px; }
.base-controls > .control { padding: 20px; background: var(--panel-2); }
.control > label { margin-bottom: 10px; font-size: .95rem; }
.control small, .mode-controls small { margin-top: 10px; font-size: .82rem; }
.mode-controls { gap: 8px; padding-top: 22px; margin: 8px 0 24px; font-size: .92rem; }
#assumptions-title + .mode-controls { border: 0; padding-top: 0; }
.confidence-heading { font-size: .7rem; line-height: 1.4; }
.parameter-ci-grid { gap: 9px; }
.uplift-anchor-card, .difficulty-anchor { padding: 20px; border: 0; }
.uplift-anchor-header { align-items: center; }
.difficulty-anchor-title, .uplift-anchor-header > div { color: var(--text); font-size: .78rem; letter-spacing: .06em; }
.uplift-anchor-header label, .uplift-value-label, .confidence-grid label { font-size: .85rem; }
.difficulty-anchor { margin-bottom: 10px; }
.confidence-grid { grid-template-columns: minmax(130px, 1fr) repeat(3, minmax(0, 160px)); gap: 10px; }
#assumptions-controls[data-confidence-enabled="false"] .confidence-grid { grid-template-columns: minmax(130px, 1fr) 160px; }
#reset { margin-top: 10px; border-color: var(--accent); color: var(--accent); }
#reset:hover { background: var(--accent); color: var(--bg); }
hr { margin: 48px 0; }
section[aria-labelledby="method-title"] { max-width: 760px; }
#method-title { margin-bottom: 24px; }
section[aria-labelledby="method-title"] > p { font-size: 1rem; line-height: 1.75; }
.formula { padding: 20px; border: 0; color: var(--accent); }
.model-footer { margin-top: 56px; padding-top: 20px; }
.readout-info { display: none; }

@media (min-width: 1000px) {
  .horizon-shell { padding-top: 12px; }
  .site-header { margin-bottom: 10px; }
  .site-header__inner { padding-bottom: 6px; }
  .model-kicker { margin-bottom: 4px; font-size: .65rem; }
  h1 { max-width: none; margin: 0 0 6px; font-size: 1.9rem; text-wrap: initial; }
  .deck { max-width: none; margin-bottom: 14px; font-size: .85rem; line-height: 1.4; }
  .projection-panel { padding: 14px 18px; }
  .projection-panel > h2 { margin: 0 0 12px; min-height: 32px; font-size: 1.15rem; }
  .range-controls { top: 12px; right: 18px; }
  .range-controls button { min-height: 30px; padding: 4px 10px; }
  .date-controls { margin-bottom: 8px; padding: 4px 12px; }
  .date-controls input[type="date"] { min-height: 32px; padding: 4px 8px; }
  #date-scrubber { min-height: 34px; }
  .readouts { grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0; gap: 6px; }
  .readout, .readout:nth-child(even) { position: relative; padding: 10px 12px; }
  .readout dt { min-height: 2.8em; margin-bottom: 3px; padding-right: 22px; font-size: .75rem; }
  .readout dd { font-size: .67rem; }
  .readout input[type="number"] {
    display: inline-block; width: calc(100% - 86px); min-width: 95px;
    min-height: 30px; margin: 0 3px 0 0; padding: 3px 0; font-size: 1rem;
  }
  .readout dd > br { display: none; }
  .readout-info {
    display: grid; place-items: center; position: absolute; top: 4px; right: 4px;
    width: 28px; height: 28px; min-height: 28px; padding: 4px; border: 0;
    color: var(--muted); background: transparent;
  }
  .readout-info:hover { color: var(--text); background: transparent; }
  .readout-info svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.5; }
  .readout-detail {
    display: none; position: absolute; bottom: calc(100% - 1px); left: 0; z-index: 5;
    width: max(100%, 280px); padding: 14px; background: #24313e; color: #edf0f4;
    border: 1px solid #536170; box-shadow: 0 8px 24px #0008;
    font-size: .8rem; line-height: 1.6;
    --muted: #dce2e9;
  }
  .readout-detail .muted { font-size: inherit; }
  .readout:nth-child(4n) .readout-detail { left: auto; right: 0; }
  .readout.detail-open { z-index: 6; }
  .readout.detail-open .readout-detail { display: block; }
  #chart { --fit-viewport: 1; height: clamp(180px, calc(100svh - 480px), 500px); margin: 0 0 12px; }
}

@media (max-width: 999px) {
  .readouts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .readout dt { min-height: 0; }
  .readout input[type="number"] { max-width: 220px; }
}
@media (max-width: 700px) {
  .horizon-shell { width: calc(100% - 28px); padding-top: 16px; }
  .site-header { margin-bottom: 32px; }
  .site-header__inner { align-items: center; }
  .site-header__meta { gap: 4px 12px; }
  h1 { margin-top: 10px; }
  .deck { font-size: .95rem; margin-bottom: 28px; }
  .projection-panel, #assumptions-controls { padding: 18px 12px; }
  .projection-panel > h2 { margin-bottom: 14px; }
  .range-controls { position: static; margin-bottom: 18px; }
  button, input[type="number"], input[type="date"] { min-height: 44px; }
  input[type="number"], input[type="date"] { font-size: 16px; }
  .date-controls { padding: 12px; gap: 6px 12px; }
  #date-scrubber { flex-basis: 100%; margin: 0; }
  .readout, .readout:nth-child(even), .readout:nth-last-child(2):nth-child(even) { padding: 14px; }
  .readout input[type="number"] { font-size: 1rem; }
  .readout dt { min-height: 2.8em; font-size: .8rem; }
  .assumption { padding: 18px; }
  .base-controls > .control, .uplift-anchor-card, .difficulty-anchor { padding: 16px 12px; }
  .base-controls, .uplift-anchors { gap: 12px; }
  .base-controls > .control { margin-bottom: 12px; }
  .confidence-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px 6px; }
  #assumptions-controls[data-confidence-enabled="false"] .confidence-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  section[aria-labelledby="method-title"] { padding: 0 6px; }
  .formula { font-size: .78rem; padding: 16px; }
}
@media (max-width: 380px) {
  .readouts { grid-template-columns: 1fr; }
  .readout dt { min-height: 0; }
  .site-header__inner { gap: 10px; }
  .site-header__meta { gap: 2px 8px; font-size: .55rem; }
}
@media (prefers-reduced-motion: reduce) { button { transition: none; } }