/* Fractales · estilos propios del demo (lo común está en _shared/kit.css).
   Breakpoints del manual: ≤520 móvil · ≤980 tablet · >980 escritorio. */

/* ---------- Escenario ---------- */
.fr-stage { background: #0B1220; }
.fr-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.fr-canvas[hidden] { display: none; }
.fr-overlay { cursor: grab; outline: none; }
.fr-overlay.is-panning { cursor: grabbing; }
.fr-overlay[data-tool="zoom"] { cursor: zoom-in; }
.fr-overlay[data-tool="orbit"], .fr-overlay[data-tool="julia"], .fr-overlay[data-tool="trap"] { cursor: crosshair; }
.fr-overlay[data-mode="3d"] { cursor: move; }
.stage-progress { position: absolute; left: 0; right: 0; top: 0; height: 3px; opacity: 0; transition: opacity .3s ease; pointer-events: none; }
.stage-progress.is-active { opacity: 1; }
.stage-progress > span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--ma-blue), var(--ma-teal)); transition: width .15s linear; }
.stage-badge { position: absolute; left: 12px; right: 12px; bottom: 12px; padding: 10px 14px; border-radius: var(--ma-r-md); background: rgba(15,23,42,.9); color: #fff; font-size: 14px; line-height: 1.5; }
.julia-preview { position: absolute; right: 12px; bottom: 12px; width: 220px; height: 160px; border-radius: var(--ma-r-md); border: 2px solid rgba(255,255,255,.85); box-shadow: var(--ma-e2); pointer-events: none; }
.toolgroup-end { margin-left: auto; gap: 6px; }
.toolbar [aria-pressed="true"] { background: rgba(29,78,216,.1); color: var(--ma-blue-text); box-shadow: inset 0 0 0 1px rgba(29,78,216,.35); }
.status-mini[data-status="deep"] { color: var(--ma-teal-text); }
.status-mini[data-status="limit"] { color: var(--ma-warning-text); }
.status-mini[data-status="float"] { color: var(--ma-ink-3); }

/* ---------- Tipo de fractal ---------- */
.family-cards { display: flex; flex-direction: column; gap: 6px; }
.family-card { position: relative; display: grid; grid-template-columns: 36px 1fr auto; align-items: center; gap: 10px; padding: 8px 10px; border: 1px solid var(--ma-line); border-radius: var(--ma-r-md); background: var(--ma-surface); cursor: pointer; min-height: 48px; }
.family-card:hover { border-color: var(--ma-line-strong); background: var(--ma-surface-2); }
.family-card input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.family-card:has(input:checked) { border-color: var(--ma-blue); background: rgba(29,78,216,.06); box-shadow: inset 0 0 0 1px var(--ma-blue); }
.family-card:has(input:focus-visible) { outline: 2px solid var(--ma-blue); outline-offset: 2px; }
.family-icon { width: 36px; height: 36px; border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; background: var(--ma-grad-tint); color: var(--ma-blue-text); }
.family-text { display: flex; flex-direction: column; min-width: 0; }
.family-text strong { font-size: 14px; color: var(--ma-ink); }
.family-text .small { font-size: 12px; }
.family-step { font-size: 11px; color: var(--ma-ink-4); }

/* ---------- Fórmula ---------- */
.formula-show { font-size: 13px; padding: 8px 10px; border-radius: var(--ma-r-sm); background: var(--ma-surface-2); border: 1px solid var(--ma-line); overflow-wrap: anywhere; color: var(--ma-ink); }
.field-hint.is-error { color: var(--ma-error-text); font-weight: 500; }
.input[aria-invalid="true"] { border-color: var(--ma-error); }
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; }
.chip-row .btn { font-family: var(--ma-font-mono); font-size: 12.5px; min-height: 36px; padding: 6px 10px; }
.input-sm { min-height: 38px; padding: 6px 8px; font-size: 13.5px; }
.color-input { width: 100%; min-height: 40px; padding: 2px; border: 1px solid var(--ma-line-strong); border-radius: var(--ma-r-sm); background: var(--ma-surface); cursor: pointer; }

/* ---------- Editor de degradados ---------- */
.grad-editor { display: flex; flex-direction: column; gap: 12px; }
.grad-wrap { position: relative; padding: 0 9px; }
.grad-bar { height: 28px; border-radius: var(--ma-r-sm); border: 1px solid var(--ma-line-strong); }
.grad-track { position: relative; height: 26px; margin-top: 4px; }
.grad-stop { position: absolute; top: 2px; width: 18px; height: 22px; margin-left: -9px; border-radius: 5px 5px 9px 9px; border: 2px solid var(--ma-surface); box-shadow: 0 0 0 1px var(--ma-ink-3); cursor: ew-resize; padding: 0; touch-action: none; }
.grad-stop[aria-pressed="true"] { box-shadow: 0 0 0 2px var(--ma-blue), 0 2px 6px rgba(15,23,42,.25); }
.grad-stop:focus-visible { outline: 2px solid var(--ma-blue); outline-offset: 3px; }
@media (pointer: coarse) { .grad-stop { width: 26px; height: 30px; margin-left: -13px; } .grad-track { height: 34px; } }
.grad-row { display: flex; align-items: center; gap: 8px; }
.grad-color { display: inline-flex; align-items: center; gap: 8px; min-width: 0; }
.grad-row output { flex: none; white-space: nowrap; }
.grad-picker { width: 44px; height: 32px; padding: 0; border: 1px solid var(--ma-line-strong); border-radius: 6px; background: none; cursor: pointer; }
.grad-spacer { flex: 1; }

/* ---------- Editor de transformaciones ---------- */
.tx-editor { display: flex; flex-direction: column; gap: 10px; }
.tx-canvas-wrap { width: 100%; }
.tx-canvas { display: block; border-radius: var(--ma-r-md); border: 1px solid var(--ma-line); touch-action: none; cursor: pointer; }
.tx-canvas:focus-visible { outline: 2px solid var(--ma-blue); outline-offset: 2px; }
.tx-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.tx-list { display: flex; flex-direction: column; gap: 4px; }
.tx-item { display: grid; grid-template-columns: 14px auto 1fr auto; align-items: center; gap: 8px; min-height: 40px; padding: 6px 10px; border: 1px solid var(--ma-line); border-radius: var(--ma-r-sm); background: var(--ma-surface); text-align: left; font-size: 13.5px; color: var(--ma-ink); cursor: pointer; }
.tx-item[aria-selected="true"] { border-color: var(--ma-blue); background: rgba(29,78,216,.06); font-weight: 600; }
.tx-swatch { width: 14px; height: 14px; border-radius: 4px; border: 1px solid var(--ma-line-strong); display: inline-block; }
.tx-vars { color: var(--ma-ink-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.tx-w { color: var(--ma-ink-4); }
.tx-details { display: flex; flex-direction: column; gap: 10px; padding: 10px; border: 1px solid var(--ma-line); border-radius: var(--ma-r-md); background: var(--ma-surface-2); }
.tx-ops { display: flex; flex-wrap: wrap; gap: 2px; }
.tx-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px 8px; }
.tx-grid .field-label { font-family: var(--ma-font-mono); }
.tx-var { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 4px; }
.tx-vars-set { display: flex; flex-direction: column; gap: 8px; }

/* ---------- L-systems ---------- */
.rules { display: flex; flex-direction: column; gap: 8px; margin-bottom: 8px; }
/* Símbolo → reemplazo [×] en una fila; la probabilidad (si la hay) debajo */
.rule-row { display: grid; grid-template-columns: 64px auto minmax(0, 1fr) auto; align-items: end; gap: 6px; }
.rule-row > button { grid-column: 4; grid-row: 1; }
.rule-p { grid-column: 1 / 4; grid-row: 2; }
.rule-p .input { max-width: 120px; }
.rule-row .field-label { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rules > .rule-row + .rule-row { padding-top: 8px; border-top: 1px dashed var(--ma-line); }
.field-stack { display: flex; flex-direction: column; gap: 12px; }
.rule-arrow { padding-bottom: 12px; color: var(--ma-ink-4); }
.input-sym { text-align: center; }

/* ---------- Animación ---------- */
.anim { display: flex; flex-direction: column; gap: 12px; }
.anim-keys-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; }
.anim-keys-head .field-label { margin: 0; }
.anim-keys-head .btn { max-width: 100%; }
.anim-keys { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 4px; }
.anim-key { display: inline-flex; align-items: center; border: 1px solid var(--ma-line); border-radius: var(--ma-r-sm); background: var(--ma-surface); }
.anim-key .btn { min-height: 36px; }
.anim-transport { display: flex; align-items: center; gap: 10px; }
.anim-transport input[type="range"] { flex: 1; }
.btn-rec.is-recording { border-color: var(--ma-error); color: var(--ma-error-text); }
.btn-rec.is-recording .icon { color: var(--ma-error); }

/* ---------- Métricas ---------- */
.orbit-card { display: flex; flex-direction: column; gap: 8px; }
.orbit-card > p .icon { vertical-align: -3px; }
.orbit-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 6px; }
.badge.orbit-escapes { background: rgba(245,158,11,.12); color: var(--ma-warning-text); }
.badge.orbit-periodic, .badge.orbit-converges { background: rgba(22,163,74,.12); color: var(--ma-success-text); }
.badge.orbit-bounded { background: rgba(29,78,216,.1); color: var(--ma-blue-text); }

/* ---------- Mutaciones ---------- */
.mut-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; max-width: 480px; margin: 0 auto; }
.mut-cell { position: relative; aspect-ratio: 1; padding: 0; border: 2px solid var(--ma-line); border-radius: var(--ma-r-md); overflow: hidden; background: #05070F; cursor: pointer; }
.mut-cell:hover { border-color: var(--ma-blue); }
.mut-cell:nth-child(5) { border-color: var(--ma-teal); cursor: default; }
.mut-cell canvas { width: 100%; height: 100%; display: block; }
.mut-badge { position: absolute; left: 6px; top: 6px; padding: 2px 8px; border-radius: 999px; background: rgba(15,23,42,.85); color: #fff; font-size: 11px; font-weight: 600; }
.mut-actions { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 12px; margin-top: 14px; }

/* ---------- Widgets de Aprende ---------- */
.w { display: flex; flex-direction: column; gap: 10px; }
.w-canvas-wrap { width: 100%; display: flex; justify-content: center; }
.w-canvas { border-radius: var(--ma-r-sm); border: 1px solid var(--ma-line); touch-action: none; max-width: 100%; }
.w-canvas:focus-visible { outline: 2px solid var(--ma-blue); outline-offset: 2px; }
.w-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.w-grid4 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.w-fig { margin: 0; display: flex; flex-direction: column; gap: 6px; }
.w-fig figcaption { font-weight: 600; color: var(--ma-ink-2); text-align: center; }
.w-side { display: grid; grid-template-columns: minmax(0, 1fr) minmax(180px, 220px); gap: 16px; align-items: center; }
.w-toggles { display: flex; flex-direction: column; gap: 6px; }
.w-toggle { display: grid; grid-template-columns: 14px 1fr; align-items: center; gap: 8px; }
.lsys-string { font-size: 12.5px; line-height: 1.6; padding: 8px 10px; border-radius: var(--ma-r-sm); background: var(--ma-surface-2); border: 1px solid var(--ma-line); overflow-wrap: anywhere; max-height: 120px; overflow: auto; }

/* ---------- Guía ---------- */
.tut-list { display: flex; flex-direction: column; gap: 12px; margin-top: 12px; }
.tut { padding: 0; }
.tut > summary { list-style: none; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 14px; padding: 16px 18px; cursor: pointer; }
.tut > summary::-webkit-details-marker { display: none; }
.tut > summary .chev { transition: transform var(--ma-fast) var(--ma-ease); color: var(--ma-ink-4); }
.tut[open] > summary .chev { transform: rotate(180deg); }
.tut-title { display: flex; flex-direction: column; gap: 2px; }
.tut-steps { margin: 0 18px 12px 64px; padding-left: 18px; display: flex; flex-direction: column; gap: 8px; color: var(--ma-ink-2); line-height: 1.6; }
.tut > .btn { margin: 0 18px 18px 64px; }

@media (max-width: 980px) {
  .julia-preview { width: 160px; height: 116px; }
}
@media (max-width: 520px) {
  .toolgroup-end { margin-left: 0; }
  .w-pair, .w-side { grid-template-columns: 1fr; }
  .tut-steps { margin-left: 18px; }
  .tut > .btn { margin-left: 18px; }
  .rule-row { grid-template-columns: 52px auto minmax(0, 1fr) auto; }
  .tx-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (prefers-reduced-motion: reduce) { .stage-progress > span { transition: none; } }