/* Singularity Foundry · SF/CIA — componentes v1.0
   Cargar después de fonts.css y tokens.css. Todos los valores vienen de los tokens; clases con prefijo sf-. */

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 24px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-optical-sizing: auto;
}

/* Theme-specific artwork: logos are fixed-colour files, so swap the file per theme */
.sf-only-light { display: none !important; }
[data-theme="light"] .sf-only-light { display: revert !important; }
[data-theme="light"] .sf-only-dark { display: none !important; }


/* ----------------------------------------------------------------- Icon */
.sf-icon { display: inline-block; flex: none; vertical-align: middle; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: square; stroke-linejoin: miter; }

/* --------------------------------------------------------------- Button */
.sf-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-8);
  height: 40px; padding: 0 20px; box-sizing: border-box;
  border: 1px solid transparent; border-radius: var(--radius-2);
  font-family: var(--font-sans); font-size: 12px; line-height: 16px; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase; text-decoration: none; white-space: nowrap;
  cursor: pointer; background: transparent; color: var(--ink);
  transition: background-color var(--duration-fast) var(--ease-standard), border-color var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard);
}
.sf-btn-lg { height: 48px; padding: 0 var(--space-24); font-size: 13px; }
.sf-btn:focus-visible { outline: 2px solid transparent; box-shadow: var(--focus-ring); }
.sf-btn-primary { background: var(--action); color: var(--on-action); }
.sf-btn-primary:hover { background: var(--action-hover); }
.sf-btn-secondary { border-color: var(--ink); color: var(--ink); }
.sf-btn-secondary:hover { background: var(--ink); color: var(--surface); }
.sf-btn-ghost { padding: 0 var(--space-4); color: var(--ink); }
.sf-btn-ghost .sf-icon { color: var(--signal-text); transition: transform var(--duration-fast) var(--ease-standard); }
.sf-btn-ghost:hover .sf-icon { transform: translateX(4px); }
.sf-btn[disabled], .sf-btn[aria-disabled="true"] { cursor: not-allowed; background: transparent; border-color: var(--line); color: var(--ink-muted); }

/* -------------------------------------------------------------- Eyebrow */
.sf-eyebrow { margin: 0; font-family: var(--font-sans); font-size: 12px; line-height: 16px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--signal-text); }
.sf-eyebrow-muted { color: var(--ink-muted); }
.sf-eyebrow-index { font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------------- Frame */
.sf-frame { position: relative; padding: var(--space-32); box-sizing: border-box; --sf-frame-ink: var(--signal); }
.sf-frame-ink { --sf-frame-ink: var(--ink); }
.sf-frame-muted { --sf-frame-ink: var(--line-strong); }
.sf-frame-corner { position: absolute; width: 16px; height: 16px; border: 0 solid var(--sf-frame-ink); pointer-events: none; }
.sf-frame-corner.tl { top: 0; left: 0; border-top-width: var(--stroke-mark); border-left-width: var(--stroke-mark); }
.sf-frame-corner.tr { top: 0; right: 0; border-top-width: var(--stroke-mark); border-right-width: var(--stroke-mark); }
.sf-frame-corner.bl { bottom: 0; left: 0; border-bottom-width: var(--stroke-mark); border-left-width: var(--stroke-mark); }
.sf-frame-corner.br { bottom: 0; right: 0; border-bottom-width: var(--stroke-mark); border-right-width: var(--stroke-mark); }
.sf-frame-cross { position: absolute; left: 50%; top: 50%; width: 16px; height: 16px; margin: -8px 0 0 -8px; color: var(--sf-frame-ink); pointer-events: none; }
.sf-frame-coords { position: absolute; top: 2px; left: 24px; font-family: var(--font-mono); font-size: 11px; line-height: 16px; font-weight: 500; letter-spacing: 0.02em; color: var(--ink-muted); text-transform: uppercase; }

/* ----------------------------------------------------------------- Card */
.sf-card { background: var(--surface-raised); border-radius: var(--radius-6); padding: var(--space-24); display: grid; gap: var(--space-8); align-content: start; min-width: 0; color: var(--ink); }
.sf-card-index { font-size: 11px; line-height: 16px; font-weight: 700; letter-spacing: 0.08em; color: var(--signal-text); font-variant-numeric: tabular-nums; }
.sf-card-title { margin: var(--space-8) 0 0; font-family: var(--font-sans); font-size: 16px; line-height: 24px; font-weight: 700; letter-spacing: 0.02em; text-transform: uppercase; color: var(--ink); text-wrap: balance; }
.sf-card-body { margin: 0; font-size: 14px; line-height: 20px; color: var(--ink-muted); }
.sf-card-body p { margin: 0; }

/* -------------------------------------------------------------- Callout */
.sf-callout { border-radius: var(--radius-6); padding: var(--space-16) var(--space-24); font-size: 16px; line-height: 24px; color: var(--ink); }
.sf-callout-rule { background: var(--signal-tint); }
.sf-callout-note { background: var(--surface-raised); box-shadow: inset 0 0 0 1px var(--line); }
.sf-callout-title { font-weight: 700; }
.sf-callout p { margin: 0; }

/* ---------------------------------------------------------------- Badge */
.sf-badge { display: inline-flex; align-items: center; gap: var(--space-4); height: 24px; padding: 0 var(--space-8); box-sizing: border-box; border-radius: var(--radius-2); font-family: var(--font-sans); font-size: 11px; line-height: 16px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; white-space: nowrap; --sf-badge-ink: var(--ink); color: var(--sf-badge-ink); }
.sf-badge-signal { --sf-badge-ink: var(--signal-text); }
.sf-badge-solid { background: var(--sf-badge-ink); color: var(--surface); }
.sf-badge-signal.sf-badge-solid { background: var(--action); color: var(--on-action); }
.sf-badge-outline { box-shadow: inset 0 0 0 1px var(--sf-badge-ink); }
.sf-badge-dashed { border: 1px dashed var(--sf-badge-ink); }

/* ---------------------------------------------------------- EvidenceTag */
.sf-evidence { display: inline-flex; align-items: center; gap: 6px; height: 24px; padding: 0 var(--space-8); box-sizing: border-box; border-radius: var(--radius-2); font-size: 12px; line-height: 16px; font-weight: 600; white-space: nowrap; color: var(--ink); border: 1px solid var(--ink); }
.sf-evidence-mark { width: 8px; height: 8px; box-sizing: border-box; border: 1.5px solid currentColor; flex: none; }
.sf-evidence-fact { background: var(--data-1); border-color: var(--data-1); color: var(--surface); }
.sf-evidence-fact .sf-evidence-mark { background: currentColor; }
.sf-evidence-inference .sf-evidence-mark { background: linear-gradient(135deg, currentColor 50%, transparent 50%); }
.sf-evidence-hypothesis { border-style: dashed; }
.sf-evidence-hypothesis .sf-evidence-mark { border-style: dashed; }
.sf-evidence-unknown { border-style: dotted; border-color: var(--line-strong); color: var(--ink-muted); }
.sf-evidence-unknown .sf-evidence-mark { border: 0; width: auto; height: auto; font-weight: 700; font-size: 12px; line-height: 1; }

/* ------------------------------------------------------ ConfidenceMeter */
.sf-confidence { display: inline-flex; align-items: center; gap: var(--space-8); font-size: 12px; line-height: 16px; color: var(--ink); }
.sf-confidence-bars { display: inline-flex; gap: 2px; }
.sf-confidence-bar { width: 14px; height: 6px; box-sizing: border-box; border: 1px solid var(--line-strong); }
.sf-confidence-bar.on { background: var(--ink); border-color: var(--ink); }
.sf-confidence-label { font-weight: 600; }
.sf-confidence-basis { color: var(--ink-muted); }

/* ------------------------------------------------------------ SourceRef */
.sf-source { display: flex; flex-wrap: wrap; align-items: baseline; column-gap: var(--space-8); row-gap: 2px; font-family: var(--font-mono); font-size: 13px; line-height: 20px; color: var(--ink-muted); min-width: 0; }
.sf-source-id { color: var(--signal-text); font-weight: 500; }
.sf-source-name { color: var(--ink); font-family: var(--font-sans); font-size: 14px; font-weight: 600; overflow-wrap: anywhere; }
.sf-source a.sf-source-name { text-decoration: underline; text-decoration-color: var(--line-strong); text-underline-offset: 3px; }
.sf-source a.sf-source-name:hover { text-decoration-color: var(--signal); }
.sf-source a:focus-visible { outline: 2px solid transparent; box-shadow: var(--focus-ring); border-radius: var(--radius-2); }
.sf-source-sep { color: var(--line-strong); }

/* ----------------------------------------------------------- SignalItem */
.sf-signal { display: grid; grid-template-columns: 20px minmax(0, 1fr); column-gap: var(--space-16); padding: var(--space-16) 0; border-top: 1px solid var(--line); }
.sf-signal-marker { padding-top: 6px; color: var(--ink); }
.sf-signal-critical .sf-signal-marker { color: var(--signal); }
.sf-signal-head { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-8) var(--space-16); }
.sf-signal-severity { font-size: 11px; line-height: 16px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-muted); }
.sf-signal-critical .sf-signal-severity { color: var(--signal-text); }
.sf-signal-line { font-family: var(--font-mono); font-size: 11px; line-height: 16px; font-weight: 500; letter-spacing: 0.02em; color: var(--ink-muted); text-transform: uppercase; }
.sf-signal-title { margin: var(--space-4) 0 0; font-family: var(--font-display); font-size: 20px; line-height: 28px; font-weight: 600; color: var(--ink); text-wrap: balance; }
.sf-signal-summary { margin: var(--space-4) 0 0; font-size: 14px; line-height: 20px; color: var(--ink-muted); max-width: 68ch; }
.sf-signal-meta { margin-top: var(--space-8); display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-8) var(--space-16); font-family: var(--font-mono); font-size: 12px; line-height: 16px; color: var(--ink-muted); }
.sf-signal-meta-item { display: inline-flex; align-items: center; gap: var(--space-4); }

/* ---------------------------------------------------------- BriefHeader */
.sf-brief { border-radius: var(--radius-6); overflow: hidden; background: var(--surface-raised); color: var(--ink); }
.sf-brief-bar { background: var(--intelligence-black); color: var(--pure-white); display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-8) var(--space-16); padding: var(--space-8) var(--space-24); font-size: 11px; line-height: 16px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.sf-brief-bar-dot { width: 4px; height: 4px; background: var(--signal-red); flex: none; }
.sf-brief-bar-right { margin-left: auto; font-family: var(--font-mono); font-weight: 500; letter-spacing: 0.02em; color: var(--pure-white); }
.sf-brief-body { padding: var(--space-24); display: grid; gap: var(--space-8); }
.sf-brief-series { font-family: var(--font-mono); font-size: 11px; line-height: 16px; font-weight: 500; letter-spacing: 0.02em; text-transform: uppercase; color: var(--signal-text); }
.sf-brief-title { margin: 0; font-family: var(--font-display); font-size: 32px; line-height: 40px; font-weight: 700; letter-spacing: -0.01em; text-wrap: balance; }
.sf-brief-question { margin: 0; font-size: 18px; line-height: 28px; color: var(--ink); max-width: 68ch; }
.sf-brief-question b { font-weight: 600; }
.sf-brief-meta { margin: var(--space-16) 0 0; padding: var(--space-16) 0 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: var(--space-16); }
.sf-brief-meta div { min-width: 0; }
.sf-brief-meta dt { font-size: 11px; line-height: 16px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-muted); }
.sf-brief-meta dd { margin: var(--space-4) 0 0; font-size: 14px; line-height: 20px; color: var(--ink); }

/* ------------------------------------------------------------ IndexList */
.sf-index { list-style: none; margin: 0; padding: 0; }
.sf-index-row { display: grid; grid-template-columns: 48px minmax(120px, 200px) minmax(0, 1fr); gap: var(--space-16); align-items: baseline; padding: var(--space-16) 0; border-bottom: 1px solid var(--line); }
.sf-index-num { font-size: 12px; line-height: 16px; font-weight: 700; letter-spacing: 0.08em; color: var(--signal-text); font-variant-numeric: tabular-nums; }
.sf-index-term { font-size: 14px; line-height: 20px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink); }
.sf-index-desc { font-size: 14px; line-height: 20px; color: var(--ink-muted); }
@media (max-width: 520px) {
  .sf-index-row { grid-template-columns: 40px minmax(0, 1fr); }
  .sf-index-desc { grid-column: 2; }
}

/* --------------------------------------------------------------- DoDont */
.sf-dodont { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: var(--space-16); }
.sf-dodont-cell { border-radius: var(--radius-6); padding: var(--space-16) var(--space-24); display: grid; gap: var(--space-8); align-content: start; min-width: 0; }
.sf-dodont-avoid { background: var(--surface-raised); }
.sf-dodont-prefer { background: var(--signal-tint); }
.sf-dodont-label { display: inline-flex; align-items: center; gap: var(--space-4); font-size: 11px; line-height: 16px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-muted); }
.sf-dodont-prefer .sf-dodont-label { color: var(--signal-text); }
.sf-dodont-text { margin: 0; font-size: 14px; line-height: 20px; color: var(--ink); }
.sf-dodont-avoid .sf-dodont-text { text-decoration: line-through; text-decoration-color: var(--line-strong); }

/* --------------------------------------------------------------- NavBar */
.sf-nav { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-16) var(--space-32); padding: var(--space-16) var(--space-24); background: var(--surface); border-bottom: 1px solid var(--line); }
.sf-nav-logo { display: inline-flex; align-items: center; flex: none; }
.sf-nav-logo { color: var(--ink); text-decoration: none; }
.sf-nav-logo img { display: block; width: 300px; max-width: 100%; height: auto; }
.sf-nav-logo:focus-visible { outline: 2px solid transparent; box-shadow: var(--focus-ring); }
.sf-nav-brand { font-family: var(--font-sans); font-size: 16px; line-height: 24px; font-weight: 800; letter-spacing: 0.02em; }
.sf-nav-links { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-8) var(--space-24); margin: 0 0 0 auto; padding: 0; list-style: none; }
.sf-nav-link { position: relative; display: inline-block; padding: var(--space-8) 0; font-size: 12px; line-height: 16px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-muted); text-decoration: none; transition: color var(--duration-fast) var(--ease-standard); }
.sf-nav-link:hover, .sf-nav-link[aria-current="page"] { color: var(--ink); }
.sf-nav-link[aria-current="page"]::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--signal); }
.sf-nav-link:focus-visible { outline: 2px solid transparent; box-shadow: var(--focus-ring); }

/* ------------------------------------------------------------ TextField */
.sf-field { display: grid; gap: var(--space-8); align-content: start; min-width: 0; }
.sf-field-label { font-size: 11px; line-height: 16px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink); }
.sf-field-input { height: 44px; box-sizing: border-box; width: 100%; padding: 0 var(--space-16); border: 1px solid var(--line-strong); border-radius: var(--radius-2); background: var(--surface); color: var(--ink); font-family: var(--font-sans); font-size: 16px; line-height: 24px; transition: border-color var(--duration-fast) var(--ease-standard); }
textarea.sf-field-input { height: auto; min-height: 96px; padding: 10px var(--space-16); resize: vertical; }
.sf-field-input::placeholder { color: var(--ink-muted); }
.sf-field-input:hover { border-color: var(--ink-muted); }
.sf-field-input:focus { outline: 2px solid transparent; border-color: var(--ink); box-shadow: var(--focus-ring); }
.sf-field-hint { font-size: 13px; line-height: 18px; color: var(--ink-muted); }
.sf-field-invalid .sf-field-input { border-color: var(--signal); }
.sf-field-error { display: flex; gap: var(--space-4); align-items: flex-start; font-size: 13px; line-height: 18px; color: var(--signal-text); }

/* --------------------------------------------------------------- Motion */
@media (prefers-reduced-motion: reduce) {
  .sf-btn, .sf-btn-ghost .sf-icon, .sf-nav-link, .sf-field-input { transition: none; }
  .sf-btn-ghost:hover .sf-icon { transform: none; }
}