/* Trading Cripto — capa de lectura. Solo la carga este curso, así que puede pisar a curso.css.
   Cada módulo tiene su color (--mod), que fija 00-lectura.js. Todo lo demás sale de los tokens
   del sitio, así funciona igual en claro y en oscuro. */
:root { --mod: var(--accent); --mod-ink: color-mix(in srgb, var(--mod) 72%, var(--fg)); --mod-tint: color-mix(in srgb, var(--mod) 9%, transparent); --mod-line: color-mix(in srgb, var(--mod) 42%, transparent); }

/* ---------- portada: cada módulo con su color ---------- */
.mod-grid .mod-card { border-top: 3px solid var(--card, var(--accent)); background: linear-gradient(180deg, color-mix(in srgb, var(--card, var(--accent)) 8%, var(--bg-elev)), var(--bg-elev) 55%); }
.mod-grid .mod-card:hover { border-color: var(--card, var(--accent)); box-shadow: 0 8px 28px color-mix(in srgb, var(--card, var(--accent)) 22%, transparent); }
.mod-grid .mod-card h3 { font-family: var(--font-sans); font-weight: 700; font-size: 1.04rem; }
.mod-grid .mod-card p { color: var(--muted); line-height: 1.5; }

/* ---------- cabecera del módulo ---------- */
.mod-view header.mh { position: relative; margin: 0 0 0.5rem; padding: 1.5rem 1.5rem 1.35rem; border: 1px solid var(--mod-line); border-radius: 18px; overflow: hidden; background: radial-gradient(120% 140% at 0% 0%, color-mix(in srgb, var(--mod) 20%, transparent), transparent 60%), var(--bg-elev); }
.mod-view header.mh .eyebrow { color: var(--mod-ink); font-weight: 700; }
.mod-view header.mh h1 { color: var(--fg); }
.mod-view header.mh .sub { font-family: var(--font-sans); color: var(--fg-dim); font-size: 1.04rem; line-height: 1.55; margin-top: 0.6rem; }
.mh-stats { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1rem; }
.mh-stats span { font-family: var(--font-mono); font-size: 0.74rem; color: var(--fg-dim); background: color-mix(in srgb, var(--bg) 55%, transparent); border: 1px solid var(--border); border-radius: 99px; padding: 0.22rem 0.65rem; }
.mh-map { display: grid; gap: 0.15rem; margin-top: 1rem; counter-reset: l; }
.mh-map button { display: flex; gap: 0.65rem; align-items: baseline; width: 100%; text-align: left; background: transparent; border: 0; border-radius: 8px; padding: 0.32rem 0.5rem; font: 0.93rem/1.35 var(--font-sans); color: var(--fg-dim); cursor: pointer; }
.mh-map button:hover { background: var(--mod-tint); color: var(--fg); }
.mh-map button::before { counter-increment: l; content: counter(l); flex: none; width: 1.45rem; font: 700 0.76rem var(--font-mono); color: var(--mod-ink); }

/* ---------- lección ---------- */
.lesson { padding: 2.75rem 0 2.25rem; }
.lesson > .lh .l-num { display: inline-block; color: var(--mod-ink); background: var(--mod-tint); border: 1px solid var(--mod-line); border-radius: 99px; padding: 0.14rem 0.62rem; font-family: var(--font-mono); }
.lesson > .lh h2 { font-family: var(--font-sans); font-weight: 750; font-size: clamp(1.5rem, 4vw, 1.9rem); margin-top: 0.55rem; letter-spacing: -0.022em; }
.lesson > .lh .mins { margin-top: 0.45rem; }

.lesson-body { font-size: 1.06rem; line-height: 1.75; color: var(--fg-dim); }
.lesson-body > * + * { margin-top: 1.1rem; }
.lesson-body > p, .lesson-body > ul, .lesson-body > ol { max-width: 68ch; }
.lesson-body p.lead { font-size: 1.17rem; line-height: 1.62; color: var(--fg); }
.lesson-body strong { color: var(--fg); font-weight: 650; }
.lesson-body > h3 { font-family: var(--font-sans); font-weight: 720; font-size: 1.32rem; line-height: 1.28; letter-spacing: -0.015em; margin-top: 2.5rem; padding-left: 0.8rem; border-left: 4px solid var(--mod); scroll-margin-top: 76px; }
.lesson-body > h4, .lesson-body details h4 { font-family: var(--font-sans); font-weight: 700; font-size: 1.07rem; color: var(--mod-ink); margin-top: 1.7rem; }
.lesson-body li::marker { color: var(--mod-ink); font-weight: 700; }
.lesson-body li + li { margin-top: 0.5rem; }
/* El glosario ayuda sin gritar: punteado suave, y el color solo al pasar el mouse. */
.lesson-body .gloss { color: inherit; border-bottom: 1px dotted color-mix(in srgb, var(--mod-ink) 55%, transparent); }
.lesson-body .gloss:hover, .lesson-body .gloss:focus-visible { color: var(--mod-ink); background: var(--mod-tint); border-radius: 3px; }

/* índice de la lección */
.lesson-toc { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 0.9rem; }
.lesson-toc button { font: 0.8rem/1.25 var(--font-sans); color: var(--muted); background: var(--bg-elev); border: 1px solid var(--border-soft); border-radius: 99px; padding: 0.28rem 0.68rem; cursor: pointer; text-align: left; }
.lesson-toc button:hover { color: var(--fg); border-color: var(--mod-line); background: var(--mod-tint); }

/* ---------- fórmulas ---------- */
.lesson-body .katex { font-size: 1.05em; }
.lesson-body .katex-display { position: relative; margin-inline: 0; padding: 0.95rem 1rem; background: var(--bg-elev); border: 1px solid var(--border-soft); border-left: 3px solid var(--mod-line); border-radius: 10px; }
.lesson-body .katex-display.has-more { -webkit-mask-image: linear-gradient(90deg, #000 88%, transparent); mask-image: linear-gradient(90deg, #000 88%, transparent); }
.lesson-body .katex-display.has-more.at-end { -webkit-mask-image: none; mask-image: none; }

/* ---------- callouts ---------- */
.lesson-body .note { border-width: 1px; border-left-width: 4px; border-radius: 10px; padding: 1rem 1.15rem; font-size: 1rem; line-height: 1.65; }
.lesson-body .note::before { font-size: 0.72rem; margin-bottom: 0.45rem; }
.lesson-body .note--warn { border-color: var(--tint-warn-line); border-left-color: var(--warn); }
.lesson-body .note--example { border-color: var(--tint-info-line); border-left-color: var(--info); }
.lesson-body .note--try { border-color: var(--tint-success-line); border-left-color: var(--success); }
.lesson-body .note--tip { border-left-color: var(--accent); }
.lesson-body .note--info { border-left-color: var(--muted); }
.lesson-body details.adv { border-left: 4px solid var(--mod); background: var(--mod-tint); border-color: var(--mod-line); }
.lesson-body details.adv > summary { color: var(--mod-ink); font-family: var(--font-sans); font-size: 0.98rem; }
.lesson-body details.adv .adv-badge { background: var(--mod); }

/* ---------- puntos clave ---------- */
.lesson-body .takeaways { margin-top: 2.4rem; padding: 1.3rem 1.4rem 1.35rem; border: 1px solid var(--mod-line); border-radius: 14px; background: linear-gradient(135deg, var(--mod-tint), transparent 70%), var(--bg-elev); }
.lesson-body .takeaways h4 { font-family: var(--font-mono); font-size: 0.76rem; letter-spacing: 0.09em; text-transform: uppercase; color: var(--mod-ink); margin: 0 0 0.85rem; }
.lesson-body .takeaways li { color: var(--fg); font-size: 1rem; line-height: 1.55; padding-left: 1.8rem; }
.lesson-body .takeaways li + li { margin-top: 0.65rem; }
.lesson-body .takeaways li::before { top: 0.14rem; width: 1.2rem; height: 1.2rem; line-height: 1.2rem; text-align: center; font-size: 0.68rem; border-radius: 50%; color: var(--on-accent); background: var(--mod); }

/* ---------- tablas ---------- */
.tbl { position: relative; margin-top: 1.25rem; overflow-x: auto; border: 1px solid var(--border); border-radius: 11px; background: var(--bg-elev); scrollbar-width: thin; }
.lesson-body .tbl table { display: table; width: 100%; border-collapse: collapse; font: 0.88rem/1.45 var(--font-sans); }
.lesson-body .tbl th, .lesson-body .tbl td { border: 0; border-bottom: 1px solid var(--border-soft); padding: 0.62rem 0.8rem; }
.lesson-body .tbl tr:last-child td { border-bottom: 0; }
.lesson-body .tbl th { background: var(--mod-tint); color: var(--mod-ink); font: 700 0.74rem/1.3 var(--font-mono); letter-spacing: 0.03em; white-space: nowrap; border-bottom: 1px solid var(--mod-line); }
.lesson-body .tbl tbody tr:nth-child(even) td { background: color-mix(in srgb, var(--bg-elev-2) 50%, transparent); }
.lesson-body .tbl tbody tr:hover td { background: var(--mod-tint); }
.lesson-body .tbl td.n { font-family: var(--font-mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.lesson-body .tbl td.up { color: var(--success); font-weight: 600; }
.lesson-body .tbl td.dn { color: var(--danger); font-weight: 600; }

/* ---------- simulaciones ---------- */
.sim-frame { border-color: var(--mod-line); box-shadow: 0 6px 26px color-mix(in srgb, var(--mod) 9%, transparent); }
.sim-head { background: linear-gradient(90deg, var(--mod-tint), transparent); }
.sim-head h4 { font-family: var(--font-sans); font-size: 1rem; font-weight: 720; letter-spacing: -0.01em; }
.sim-head h4::before { content: "Simulación"; display: block; margin-bottom: 0.2rem; font: 700 0.64rem var(--font-mono); letter-spacing: 0.09em; text-transform: uppercase; color: var(--mod-ink); }
.sim-head p { font-size: 0.9rem; }

/* ---------- figuras animadas ---------- */
.lesson-body .sim.is-fig { max-width: 560px; margin-inline: auto; }
.fig { margin: 0; background: var(--bg-elev); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; }
.fig-head { padding: 0.8rem 1rem 0; font: 700 0.64rem var(--font-mono); letter-spacing: 0.09em; text-transform: uppercase; color: var(--mod-ink); }
.fig-title { padding: 0.2rem 1rem 0; font: 720 1rem/1.3 var(--font-sans); color: var(--fg); }
.fig svg { display: block; width: 100%; height: auto; font-family: var(--font-mono); margin-top: 0.3rem; }
.fig .e { transition: opacity .45s ease, transform .45s ease; transform-box: fill-box; }
.fig .e.off { opacity: 0; pointer-events: none; }
.fig .e.pop.off { transform: scale(.92); }
.fig .e-draw { transition: stroke-dashoffset .8s ease; }
.fig-t { font-size: 13px; fill: var(--fg-dim); }
.fig-box { fill: var(--bg-elev-2); stroke: var(--border); stroke-width: 1.2; }
.t-buy { --c: var(--success); } .t-sell { --c: var(--danger); } .t-warn { --c: var(--warn); } .t-info { --c: var(--info); } .t-accent { --c: var(--mod-ink); } .t-muted { --c: var(--muted); } .t-fg { --c: var(--fg); }
.fig-box.tn { fill: color-mix(in srgb, var(--c) 14%, var(--bg-elev)); stroke: var(--c); }
.fig-ink { fill: var(--c, var(--fg-dim)); }
.fig-stroke { stroke: var(--c, var(--muted)); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.fig-solid { fill: var(--c, var(--muted)); stroke: none; }
.fig-area { fill: color-mix(in srgb, var(--c, var(--muted)) 16%, transparent); stroke: none; }
.fig-grid { stroke: var(--border-soft); stroke-width: 1; fill: none; }
.fig-cap { margin: 0; min-height: 5.2em; padding: 0.75rem 1rem 0.6rem; font: 0.95rem/1.5 var(--font-sans); color: var(--fg-dim); border-top: 1px solid var(--border-soft); }
.fig-cap b { color: var(--fg); }
.fig-bar { display: flex; align-items: center; gap: 0.5rem; padding: 0 1rem 0.8rem; }
.fig-btn { font: 700 0.76rem var(--font-mono); min-width: 40px; min-height: 36px; padding: 0 0.6rem; color: var(--fg); background: var(--bg-elev-2); border: 1px solid var(--border); border-radius: 8px; cursor: pointer; }
.fig-btn:hover:not(:disabled) { border-color: var(--mod); }
.fig-btn:disabled { opacity: .4; cursor: default; }
.fig-dots { display: flex; gap: 0.3rem; flex: 1; align-items: center; min-width: 0; }
.fig-dots i { display: block; flex: 1; height: 4px; max-width: 48px; border-radius: 3px; background: var(--border); transition: background .3s; }
.fig-dots i.on { background: var(--mod); }

/* ---------- videos (Manim) ---------- */
.lesson-body figure.vid { margin: 1.5rem auto 0; max-width: 760px; border: 1px solid var(--mod-line); border-radius: 14px; overflow: hidden; background: #0d0d14; }
.vid video { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; background: #0d0d14; }
.vid figcaption { padding: 0.7rem 1rem 0.8rem; font: 0.92rem/1.5 var(--font-sans); color: var(--fg-dim); background: var(--bg-elev); }
.vid figcaption b { color: var(--fg); }

/* ---------- aparición al hacer scroll: nunca oculta sin el observador ---------- */
.js-rv .rv { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; }
.js-rv .rv.in { opacity: 1; transform: none; }

/* progreso de lectura */
.read-bar { position: fixed; z-index: 45; left: 0; top: 57px; height: 2px; width: 100%; transform-origin: 0 50%; transform: scaleX(0); background: var(--mod); pointer-events: none; }

@media (max-width: 860px) {
  .lesson-body { font-size: 1.03rem; line-height: 1.7; }
  .lesson-body p.lead { font-size: 1.1rem; }
  .mod-view header.mh { padding: 1.15rem 1.05rem; }
  .lesson-body > h3 { font-size: 1.2rem; }
}
@media (prefers-reduced-motion: reduce) {
  .fig .e, .fig .e-draw, .js-rv .rv { transition: none; }
  .js-rv .rv { opacity: 1; transform: none; }
}
@media print { .js-rv .rv { opacity: 1 !important; transform: none !important; } .read-bar, .lesson-toc { display: none; } }