/* Estilos de Aprendizaje y diagramas (Fase 3). */

.learning { max-width: 980px; }
.learn-progress { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 16px; margin-bottom: 14px; }
.learn-progress-label { display: flex; justify-content: space-between; margin-bottom: 8px; }
.learn-bar { height: 10px; border-radius: 6px; background: var(--head); overflow: hidden; }
.learn-bar-fill { height: 100%; background: var(--pos); border-radius: 6px; transition: width .4s; }
.learn-search { width: 100%; padding: 10px 14px; font-size: 15px; margin-bottom: 14px; }
.learn-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; }
.learn-card { display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; column-gap: 12px; row-gap: 4px; padding: 14px 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); text-decoration: none; color: var(--text); transition: border-color .15s, box-shadow .15s; }
.learn-card:hover { border-color: var(--color-foco); box-shadow: 0 0 0 1px var(--color-foco); }
.learn-card.studied { border-left: 4px solid var(--pos); }
.learn-num { grid-row: span 2; font-size: 22px; font-weight: 800; color: var(--muted); font-variant-numeric: tabular-nums; align-self: center; }
.learn-card-title { font-weight: 700; line-height: 1.3; }
.learn-card-meta { display: flex; gap: 10px; font-size: 12px; align-items: center; }
.learn-done { color: var(--pos); font-weight: 600; }
.learn-results { display: grid; gap: 10px; margin-bottom: 14px; }
.learn-results > p { margin: 0; }
.learn-hit { display: block; padding: 12px 14px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); text-decoration: none; color: var(--text); }
.learn-hit:hover { border-color: var(--color-foco); }
.learn-hit-title { font-weight: 700; margin-bottom: 4px; }
.learn-hit-text { font-size: 13px; color: var(--muted); margin-top: 3px; }
mark { background: var(--mark-bg); color: inherit; border-radius: 3px; padding: 0 1px; }
mark.current { background: var(--mark-current); box-shadow: 0 0 0 2px var(--mark-current); }

/* clase */
.lesson-head { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-bottom: 10px; }
.lesson-head a.btn { text-decoration: none; }
.lesson-title { font-size: 26px; margin: 4px 0 12px; }
.lesson-tools { position: sticky; top: -20px; z-index: 5; display: flex; align-items: center; flex-wrap: wrap; gap: 8px; padding: 10px 12px; margin: 0 -12px 12px; background: var(--bg); border-bottom: 1px solid var(--border); }
.lesson-tools input { width: 260px; max-width: 100%; }
.learn-count { font-size: 12px; }
.btn-studied { background: var(--tp-bg); border-color: var(--tp-border); color: var(--tp-fg); font-weight: 600; }
.lesson-ai-note { font-size: 12px; color: var(--muted); background: var(--surface-2); border: 1px dashed var(--border); border-radius: 8px; padding: 6px 10px; }
.lesson { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 8px 28px 20px; font-size: 15px; line-height: 1.65; }
.lesson h2 { font-size: 19px; margin: 22px 0 8px; }
.lesson h3 { font-size: 16px; margin: 20px 0 6px; color: var(--strong); }
.lesson p { margin: 8px 0; }
.lesson ul, .lesson ol { padding-left: 22px; margin: 8px 0; }
.lesson li { margin: 6px 0; }
.lesson blockquote { margin: 16px 0; padding: 10px 16px; border-left: 4px solid var(--color-foco); background: var(--surface-2); font-style: italic; font-size: 16px; }
.lesson-table { margin: 10px 0; }
.lesson-flag { margin: 10px 0; padding: 10px 14px; border-radius: 8px; background: var(--warn-bg); border: 1px solid var(--warn-border); color: var(--warn-fg); font-size: 14px; }
@media (max-width: 700px) { .lesson { padding: 4px 16px 16px; } }

/* texto de ayuda (lo usan también otras pantallas) */
.hint { font-size: 13px; margin: 4px 0 12px; }
.learn-nav { display: flex; justify-content: space-between; gap: 12px; margin: 18px 0 30px; }
.learn-nav-btn { display: flex; flex-direction: column; gap: 2px; padding: 10px 14px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); text-decoration: none; color: var(--text); max-width: 48%; }
.learn-nav-btn.next { text-align: right; margin-left: auto; }
.learn-nav-btn:hover { border-color: var(--color-foco); }

/* diagramas (tema oscuro) */
.diagram { margin: 18px 0; background: var(--dg-bg); border: 1px solid var(--dg-border); border-radius: 12px; padding: 12px 12px 10px; color: var(--dg-text); }
.dg-title { font-weight: 700; font-size: 14px; color: var(--dg-strong); padding: 2px 4px 8px; }
.dg-stage { overflow-x: auto; }
.dg-svg { display: block; width: 100%; min-width: 600px; height: auto; }
.dg-caption { font-size: 14px; line-height: 1.5; padding: 10px 6px 4px; min-height: 3em; }
.dg-controls { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 8px; padding-top: 6px; }
.dg-btn { border: 1px solid var(--dg-btn-border); background: var(--dg-btn); color: var(--dg-text); padding: 6px 12px; border-radius: 8px; cursor: pointer; font: inherit; font-size: 13px; }
.dg-btn:hover:not(:disabled) { background: var(--dg-btn-hover); }
.dg-btn:disabled { opacity: .4; cursor: default; }
.dg-btn.primary { background: var(--color-acento); border-color: var(--color-acento); color: var(--color-sobre-acento); }
.dg-counter { font-size: 12px; color: var(--dg-muted); min-width: 90px; text-align: center; }
.dg-pop { animation: dg-pop .35s ease-out both; }
@keyframes dg-pop { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .dg-pop { animation: none; } }
.diagram-pending { display: flex; align-items: center; gap: 10px; color: var(--dg-muted); font-size: 13px; padding: 14px 16px; border-style: dashed; }
.diagram-pending code { margin-left: auto; font-size: 11px; opacity: .7; }

/* diagramas: paneles, comparativas, meses, calculadora, reglas */
.dg-panels { display: grid; gap: 10px; overflow-x: auto; }
.dg-panel { min-width: 220px; }
.dg-panel .dg-svg { min-width: 0; }
.dg-panel-title { font-weight: 800; font-size: 15px; padding: 2px 4px 6px; }
.dg-panel-text { font-size: 13px; color: var(--dg-soft); padding: 6px 4px 0; line-height: 1.45; }
.dg-compare { display: grid; gap: 6px; font-size: 14px; }
.dg-cmp-row { display: grid; grid-template-columns: minmax(90px, .7fr) 1fr 1fr; gap: 6px; }
.dg-cmp-row > div { background: var(--dg-panel); border-radius: 8px; padding: 9px 12px; line-height: 1.4; }
.dg-cmp-head > div { background: transparent; font-weight: 800; font-size: 15px; border-bottom: 3px solid; border-radius: 0; }
.dg-cmp-head > div:first-child { border: 0; }
.dg-cmp-label { color: var(--dg-muted); font-weight: 700; }
.dg-months { display: grid; gap: 14px; }
.dg-months-label { font-weight: 800; margin-bottom: 6px; }
.dg-months-grid { display: grid; grid-template-columns: repeat(12, minmax(42px, 1fr)); gap: 5px; overflow-x: auto; }
.dg-month { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 7px 2px; border: 1px solid var(--dg-border); border-radius: 8px; color: var(--dg-off); font-size: 12px; text-transform: capitalize; }
.dg-month.on { color: var(--dg-strong); font-weight: 700; }
.dg-month-code { font-size: 15px; font-weight: 800; }
.dg-chips { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 8px; margin-top: 10px; }
.dg-chip { display: flex; flex-direction: column; gap: 2px; background: var(--dg-panel); border: 1px solid var(--dg-border); border-radius: 8px; padding: 9px 12px; font-size: 13px; color: var(--dg-soft); }
.dg-chip strong { color: var(--dg-strong); font-size: 16px; }
.dg-chip-val { color: var(--dg-liquidity); font-weight: 700; }
.dg-calc { display: flex; flex-wrap: wrap; gap: 12px; }
.dg-calc label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--dg-muted); }
.dg-input { background: var(--dg-panel); color: var(--dg-strong); border: 1px solid var(--dg-btn-border); border-radius: 8px; padding: 8px 10px; font: inherit; width: 150px; }
.dg-calc-formula-head { margin-top: 14px; font-size: 13px; color: var(--dg-muted); }
.dg-calc-out { display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.dg-calc-formula { font-size: 17px; }
.dg-calc-risk { font-size: 28px; font-weight: 800; color: var(--dg-bear); }
.dg-calc-cmp { font-size: 13px; color: var(--dg-soft); margin-top: 4px; }
.dg-rules { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.dg-rules-head { font-weight: 800; font-size: 15px; margin-bottom: 6px; }
.dg-rule { display: flex; gap: 10px; align-items: flex-start; background: var(--dg-panel); border-radius: 8px; padding: 9px 12px; margin-bottom: 6px; font-size: 14px; line-height: 1.4; }
.dg-rule-ico { font-weight: 900; }
.dg-rule.dont .dg-rule-ico { color: var(--dg-bear); }
.dg-rule.do .dg-rule-ico { color: var(--dg-bull); }
.dg-quote { margin-top: 12px; padding: 12px 14px; border-left: 4px solid var(--dg-structure); border-radius: 0; background: var(--dg-panel); font-style: italic; font-size: 16px; }

/* frase neutra (clase 5): círculo azul, única excepción al gris */
.dot-neutral { display: inline-block; width: .7em; height: .7em; border-radius: 50%; background: var(--color-neutro); margin-right: .45em; vertical-align: .05em; }
/* frase destacada en verde dentro de un diagrama */
.dg-good { color: var(--dg-bull); }
/* leyenda de colores de un diagrama */
.dg-legend { display: flex; flex-wrap: wrap; gap: 8px 18px; padding: 10px 6px 0; font-size: 13px; color: var(--dg-soft); }
.dg-legend-item { display: inline-flex; align-items: center; gap: 7px; }
.dg-swatch { width: 14px; height: 14px; border-radius: 4px; flex: 0 0 14px; }

/* léxico: líneas secundarias de una viñeta («Aussi appelé», «Voir aussi») y enlaces entre clases */
.lesson-sub { display: block; margin-top: 2px; font-size: 13px; color: var(--muted); }
.lesson-link { color: inherit; text-decoration: underline; text-underline-offset: 2px; }
.lesson-link:hover { color: var(--strong); }