/* Código Cero — estilos. Sin build step. */

@font-face { font-family: "Inter"; src: url("/fonts/inter-latin-wght-normal.woff2") format("woff2"); font-weight: 100 900; font-display: swap; unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Inter"; src: url("/fonts/inter-latin-ext-wght-normal.woff2") format("woff2"); font-weight: 100 900; font-display: swap; unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "JetBrains Mono"; src: url("/fonts/jetbrains-mono-latin-wght-normal.woff2") format("woff2"); font-weight: 100 800; font-display: swap; }

:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --alt: #fafaf8;
  --text: #2f3437;
  --muted: #50565a;
  --border: #e9e9e7;
  --accent: #17775f;
  --on-accent: #ffffff;
  --accent-tint: #e7f4ef;
  --gold-bg: #fff4d6;
  --gold-text: #8a5a00;
  --danger: #b3261e;
  --danger-tint: #fdecea;
  --ok: #1e7a34;
  --ok-tint: #e6f4ea;
  --code-bg: #f6f7f5;
  --shadow: 0 1px 2px rgba(15, 23, 20, .06), 0 4px 16px rgba(15, 23, 20, .06);
  --radius: 14px;
  --radius-sm: 10px;
  --lh: 1.6;
  --measure: 65ch;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  /* Colores por track: texto fuerte sobre tinte suave (AA). */
  --t-verde-fg: #1e7a34; --t-verde-bg: #e6f4ea;
  --t-azul-fg: #1c5fb8; --t-azul-bg: #e7f0fc;
  --t-morado-fg: #6741c4; --t-morado-bg: #f0ebfc;
  --t-naranja-fg: #a94a06; --t-naranja-bg: #fdefe3;
  --t-celeste-fg: #0b6b8f; --t-celeste-bg: #e3f4fa;
  --t-rosa-fg: #b02a63; --t-rosa-bg: #fce8f0;
  --t-amarillo-fg: #8a5a00; --t-amarillo-bg: #fff4d6;
  color-scheme: light;
}

:root[data-accent="azul"] { --accent: #1d63c9; --accent-tint: #e7f0fc; }
:root[data-accent="morado"] { --accent: #6b46c1; --accent-tint: #f0ebfc; }
:root[data-accent="naranja"] { --accent: #b4500c; --accent-tint: #fdefe3; }

:root[data-theme="dark"] {
  --bg: #16181a;
  --surface: #1e2124;
  --alt: #1b1e21;
  --text: #e8e9e7;
  --muted: #b3b9bd;
  --border: #2c3034;
  --accent: #4cc79f;
  --on-accent: #0b2a21;
  --accent-tint: #173229;
  --gold-bg: #3a2f12;
  --gold-text: #f2d27a;
  --danger: #ff8a80;
  --danger-tint: #3b1e1c;
  --ok: #6fd38a;
  --ok-tint: #16301e;
  --code-bg: #111315;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 6px 20px rgba(0, 0, 0, .3);
  --t-verde-fg: #6fd38a; --t-verde-bg: #16301e;
  --t-azul-fg: #7fb4ff; --t-azul-bg: #142640;
  --t-morado-fg: #bda6ff; --t-morado-bg: #261d40;
  --t-naranja-fg: #ffad6b; --t-naranja-bg: #3a2414;
  --t-celeste-fg: #7fd3f2; --t-celeste-bg: #102d38;
  --t-rosa-fg: #ff9cc4; --t-rosa-bg: #3a1828;
  --t-amarillo-fg: #f2d27a; --t-amarillo-bg: #3a2f12;
  color-scheme: dark;
}
:root[data-theme="dark"][data-accent="azul"] { --accent: #79adff; --on-accent: #0b1a33; --accent-tint: #142640; }
:root[data-theme="dark"][data-accent="morado"] { --accent: #bda6ff; --on-accent: #1e1236; --accent-tint: #261d40; }
:root[data-theme="dark"][data-accent="naranja"] { --accent: #ffad6b; --on-accent: #331a05; --accent-tint: #3a2414; }

:root[data-size="2"] { font-size: 112.5%; }
:root[data-size="3"] { font-size: 125%; }
:root[data-spacing="wide"] { --lh: 1.9; }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font); line-height: var(--lh); font-size: 1rem; overflow-x: hidden; }
img, svg, canvas { max-width: 100%; }
a { color: var(--accent); text-underline-offset: 2px; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(1.7rem, 4vw, 2.6rem); }
h2 { font-size: clamp(1.35rem, 3vw, 1.8rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
code, pre, kbd { font-family: var(--mono); font-size: .92em; }
:not(pre) > code { background: var(--code-bg); border: 1px solid var(--border); padding: .05em .35em; border-radius: 6px; }
pre.code-block { background: var(--code-bg); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px 14px; overflow-x: auto; line-height: 1.5; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: var(--on-accent); padding: 8px 12px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }
.prose { max-width: var(--measure); }
.stack > * + * { margin-top: 16px; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.hidden { display: none !important; }

/* Botones: 44 px mínimo. */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 18px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface); color: var(--text); font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; line-height: 1.2; }
.btn:hover { background: var(--alt); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent); filter: brightness(1.08); }
.btn-big { min-height: 52px; padding: 14px 26px; font-size: 1.08rem; border-radius: 14px; }
.btn-ghost { background: transparent; border-color: transparent; }
.btn-ghost:hover { background: var(--alt); }
.btn-danger { color: var(--danger); border-color: var(--danger); background: transparent; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; }
.icon-btn { min-width: 44px; min-height: 44px; padding: 8px; display: inline-flex; align-items: center; justify-content: center; gap: 6px; border-radius: 12px; border: 1px solid transparent; background: transparent; color: var(--text); cursor: pointer; font: inherit; }
.icon-btn:hover { background: var(--alt); border-color: var(--border); }
.icon { width: 20px; height: 20px; flex: none; }

/* Cabecera y pie */
.site-header { position: sticky; top: 0; z-index: 30; background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.header-row { display: flex; align-items: center; gap: 8px; min-height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--text); text-decoration: none; font-size: 1.1rem; margin-right: 8px; }
.main-nav { display: flex; gap: 2px; flex-wrap: wrap; }
.main-nav a { color: var(--text); text-decoration: none; padding: 10px 12px; border-radius: 10px; font-weight: 500; min-height: 44px; display: inline-flex; align-items: center; }
.main-nav a:hover, .main-nav a[aria-current="page"] { background: var(--alt); }
.header-tools { margin-left: auto; display: flex; gap: 2px; align-items: center; }
.pro-pill { font-size: .75rem; font-weight: 800; padding: 2px 8px; border-radius: 999px; background: var(--gold-bg); color: var(--gold-text); }
.site-footer { border-top: 1px solid var(--border); margin-top: 64px; padding: 32px 0; background: var(--alt); }
.footer-grid { display: grid; gap: 24px; grid-template-columns: 2fr 1fr 1fr; }
.footer-grid nav { display: flex; flex-direction: column; gap: 4px; }
.footer-grid a { color: var(--muted); min-height: 32px; display: inline-flex; align-items: center; }
@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 1020px) {
  .main-nav { display: none; }
  .main-nav.open { display: flex; position: absolute; top: 60px; left: 0; right: 0; flex-direction: column; background: var(--bg); border-bottom: 1px solid var(--border); padding: 8px 16px; }
  .header-label { display: none; }
}
@media (min-width: 1021px) { .menu-toggle { display: none; } }

main { min-height: 60vh; }
.page { padding: 32px 0 24px; }
.section { padding: 48px 0; }
.section.alt { background: var(--alt); border-block: 1px solid var(--border); }
.section-title { text-align: center; max-width: 720px; margin: 0 auto 28px; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.card-flat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); }
.tag { display: inline-flex; align-items: center; gap: 6px; font-size: .82rem; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: var(--alt); border: 1px solid var(--border); color: var(--muted); }
.tag-accent { background: var(--accent-tint); color: var(--text); border-color: transparent; }
.tag-gold { background: var(--gold-bg); color: var(--gold-text); border-color: transparent; }
.tag-ok { background: var(--ok-tint); color: var(--ok); border-color: transparent; }
.track-chip { font-weight: 700; }
[data-color] { --tc-fg: var(--t-verde-fg); --tc-bg: var(--t-verde-bg); }
[data-color="azul"] { --tc-fg: var(--t-azul-fg); --tc-bg: var(--t-azul-bg); }
[data-color="morado"] { --tc-fg: var(--t-morado-fg); --tc-bg: var(--t-morado-bg); }
[data-color="naranja"] { --tc-fg: var(--t-naranja-fg); --tc-bg: var(--t-naranja-bg); }
[data-color="celeste"] { --tc-fg: var(--t-celeste-fg); --tc-bg: var(--t-celeste-bg); }
[data-color="rosa"] { --tc-fg: var(--t-rosa-fg); --tc-bg: var(--t-rosa-bg); }
[data-color="amarillo"] { --tc-fg: var(--t-amarillo-fg); --tc-bg: var(--t-amarillo-bg); }
.tc { color: var(--tc-fg); }
.tc-bg { background: var(--tc-bg); color: var(--tc-fg); }
.track-band { border-left: 6px solid var(--tc-fg); }

.notice { border-radius: var(--radius-sm); padding: 12px 16px; border: 1px solid var(--border); background: var(--alt); }
.notice-gold { background: var(--gold-bg); color: var(--gold-text); border-color: transparent; }
.notice-ok { background: var(--ok-tint); color: var(--ok); border-color: transparent; }
.notice-danger { background: var(--danger-tint); color: var(--danger); border-color: transparent; }
.notice a { color: inherit; font-weight: 600; }

.progress { height: 10px; background: var(--alt); border: 1px solid var(--border); border-radius: 999px; overflow: hidden; }
.progress > span { display: block; height: 100%; background: var(--accent); border-radius: 999px; transition: width .4s ease; }

/* Formularios */
label { font-weight: 600; }
input[type="text"], input[type="search"], input[type="time"], textarea, select { font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border); border-radius: 10px; min-height: 44px; padding: 8px 12px; width: 100%; }
textarea { min-height: 88px; resize: vertical; }
.field { display: grid; gap: 6px; }
.choice { display: flex; align-items: center; gap: 10px; min-height: 44px; }
.choice input { width: 20px; height: 20px; accent-color: var(--accent); }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; flex-wrap: wrap; }
.seg button { min-height: 44px; padding: 8px 14px; border: 0; background: var(--surface); color: var(--text); font: inherit; cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); font-weight: 700; }

/* Portada */
.hero { padding: 48px 0 32px; }
.hero-grid { display: grid; gap: 32px; grid-template-columns: 1.05fr 1fr; align-items: center; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.1rem); }
.hero .lead { font-size: 1.15rem; color: var(--muted); max-width: 46ch; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }
.try-box { position: relative; }
.mini-editor { font-family: var(--mono); background: var(--code-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; line-height: 1.8; overflow-x: auto; white-space: pre; }
.mini-editor input { font: inherit; color: inherit; background: var(--surface); border: 2px solid var(--accent); border-radius: 6px; padding: 0 6px; width: 11ch; min-height: 0; }
.mini-result { margin-top: 12px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); padding: 16px; min-height: 92px; }
.mini-result .big { font-size: clamp(1.4rem, 4vw, 2rem); font-weight: 800; word-break: break-word; }
.tok-kw { color: #a626a4; } .tok-str { color: #50a14f; } .tok-num { color: #986801; } .tok-fn { color: #4078f2; } .tok-com { color: #8a9094; font-style: italic; }
:root[data-theme="dark"] .tok-kw { color: #c678dd; } :root[data-theme="dark"] .tok-str { color: #98c379; } :root[data-theme="dark"] .tok-num { color: #e5c07b; } :root[data-theme="dark"] .tok-fn { color: #61afef; } :root[data-theme="dark"] .tok-com { color: #8b949e; }
.gallery { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); }
.gallery canvas { width: 100%; height: auto; border-radius: var(--radius-sm); border: 1px solid var(--border); background: #fff; display: block; }
.steps3 { counter-reset: s; }
.steps3 .card { position: relative; }
.compare { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; }
@media (max-width: 700px) { .compare { grid-template-columns: 1fr; } }
.compare ul { padding-left: 1.2em; margin: 0; }
details.faq { border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); padding: 0 16px; }
details.faq + details.faq { margin-top: 10px; }
details.faq summary { cursor: pointer; font-weight: 700; min-height: 52px; display: flex; align-items: center; list-style: none; }
details.faq summary::after { content: "+"; margin-left: auto; font-size: 1.4rem; color: var(--muted); }
details.faq[open] summary::after { content: "−"; }
details.faq > div { padding-bottom: 14px; color: var(--muted); }
.plan { display: flex; flex-direction: column; gap: 12px; }
.plan ul { padding-left: 1.2em; margin: 0; }
.plan.pro { border: 2px solid var(--accent); }
.price { font-size: 2rem; font-weight: 800; }
.cta-final { text-align: center; padding: 56px 16px; border-radius: 24px; background: var(--accent-tint); }

/* Lenguajes */
.lang-card { display: flex; flex-direction: column; gap: 10px; }
.lang-card h3 { margin: 0; }
.lang-card ul { margin: 0; padding-left: 1.2em; color: var(--muted); }
.lang-soon { opacity: .75; }

/* Lección */
.lesson-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; padding: 12px 0; }
.lesson-layout { display: grid; grid-template-columns: var(--left, 30%) 8px 1fr; height: calc(100vh - 150px); min-height: 520px; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.pane-left { overflow-y: auto; padding: 20px; border-right: 1px solid var(--border); }
.pane-right { display: grid; grid-template-rows: auto var(--top, 57%) 8px 1fr; min-width: 0; min-height: 0; }
.divider { background: var(--alt); cursor: col-resize; border: 0; padding: 0; position: relative; }
.divider:hover, .divider:focus-visible { background: var(--accent-tint); }
.divider-h { cursor: row-resize; }
.current-step { padding: 10px 14px; border-bottom: 1px solid var(--border); background: var(--accent-tint); font-weight: 600; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.editor-wrap { position: relative; min-height: 0; display: flex; flex-direction: column; }
.editor-host { flex: 1; min-height: 120px; }
.editor-toolbar { display: flex; gap: 8px; align-items: center; padding: 8px 10px; border-top: 1px solid var(--border); background: var(--alt); flex-wrap: wrap; }
.fallback-editor { width: 100%; height: 100%; min-height: 160px; border: 0; border-radius: 0; resize: none; font-family: var(--mono); font-size: 14px; line-height: 1.6; padding: 12px 14px; background: var(--code-bg); color: var(--text); tab-size: 4; white-space: pre; overflow: auto; }
.bottom-panel { display: flex; flex-direction: column; min-height: 0; }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); padding: 0 8px; background: var(--alt); flex-wrap: wrap; }
.tabs button { min-height: 44px; padding: 8px 14px; border: 0; background: transparent; color: var(--muted); font: inherit; font-weight: 600; cursor: pointer; border-bottom: 3px solid transparent; }
.tabs button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); }
.tab-panel { flex: 1; overflow: auto; padding: 12px 14px; min-height: 0; }
.console { font-family: var(--mono); font-size: 14px; white-space: pre-wrap; word-break: break-word; margin: 0; }
.console .err { color: var(--danger); }
.stdin-box { font-family: var(--mono); min-height: 100px; }
.canvas-box { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-start; }
.canvas-box canvas { width: min(400px, 100%); height: auto; aspect-ratio: 4 / 3; border: 1px solid var(--border); border-radius: 10px; background: #fff; }
.test-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.test-list li { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--border); }
.test-list li.pass { background: var(--ok-tint); border-color: transparent; }
.test-list li.fail { background: var(--gold-bg); border-color: transparent; color: var(--gold-text); }
.steps-check { list-style: none; padding: 0; margin: 0 0 12px; display: grid; gap: 8px; }
.steps-check li { display: flex; gap: 10px; align-items: flex-start; padding: 8px 10px; border-radius: 10px; }
.steps-check li.current { background: var(--accent-tint); }
.steps-check li.done { color: var(--muted); }
.check { flex: none; width: 24px; height: 24px; border-radius: 7px; border: 2px solid var(--border); display: inline-flex; align-items: center; justify-content: center; margin-top: 1px; background: var(--surface); }
li.done .check, .check.on { background: var(--ok); border-color: var(--ok); color: #fff; }
:root[data-theme="dark"] li.done .check, :root[data-theme="dark"] .check.on { color: #0b2a21; }
.error-card { border: 1px solid transparent; background: var(--gold-bg); color: var(--gold-text); border-radius: 10px; padding: 10px 12px; margin-top: 10px; }
.error-card strong { display: block; }
.hint-card { background: var(--gold-bg); color: var(--gold-text); border-radius: 10px; padding: 12px 14px; }
.nudge { display: flex; gap: 10px; align-items: center; padding: 8px 12px; border-radius: 10px; background: var(--gold-bg); color: var(--gold-text); }
.lesson-steps { display: flex; gap: 6px; flex-wrap: wrap; }
.lesson-steps button { min-height: 36px; padding: 4px 12px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); color: var(--muted); font: inherit; font-size: .88rem; cursor: pointer; }
.lesson-steps button[aria-current="step"] { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.lesson-steps button.done { background: var(--ok-tint); color: var(--ok); border-color: transparent; }
.theory-card { min-height: 180px; }
.dots { display: flex; gap: 6px; justify-content: center; margin: 12px 0; }
.dots span { width: 9px; height: 9px; border-radius: 50%; background: var(--border); }
.dots span.on { background: var(--accent); }
.mobile-tabs { display: none; }
@media (max-width: 767px) {
  .lesson-layout { display: block; height: auto; border: 0; background: transparent; }
  .lesson-layout > .divider { display: none; }
  .pane-left { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
  .pane-right { display: flex; flex-direction: column; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
  .pane-right > .divider { display: none; }
  .editor-host { height: 300px; flex: none; }
  .bottom-panel { min-height: 300px; }
  .mobile-tabs { display: flex; position: sticky; top: 60px; z-index: 5; background: var(--bg); padding: 8px 0; gap: 6px; }
  .mobile-tabs button { flex: 1; }
  .lesson-layout[data-mtab="teoria"] .pane-right, .lesson-layout[data-mtab="codigo"] .pane-left, .lesson-layout[data-mtab="resultado"] .pane-left { display: none; }
  .lesson-layout[data-mtab="codigo"] .bottom-panel { display: none; }
  .lesson-layout[data-mtab="resultado"] .editor-wrap { display: none; }
}

/* Ordenar líneas */
.parsons { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; }
@media (max-width: 900px) { .parsons { grid-template-columns: 1fr; } }
.parsons-zone { min-height: 140px; border: 2px dashed var(--border); border-radius: var(--radius-sm); padding: 8px; display: grid; gap: 6px; align-content: start; }
.parsons-zone.target { border-color: var(--accent); background: var(--accent-tint); }
.block { font-family: var(--mono); font-size: 14px; white-space: pre; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; min-height: 44px; cursor: grab; text-align: left; color: var(--text); overflow-x: auto; }
.block[aria-grabbed="true"], .block.dragging { outline: 3px solid var(--accent); }
.order-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.order-item { display: flex; gap: 8px; align-items: center; padding: 8px 10px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
.order-item .grow { flex: 1; }

/* Mapa */
.trail { position: relative; padding: 8px 0; }
.trail svg.path { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.stations { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; position: relative; }
.station { display: flex; gap: 16px; align-items: center; }
.station:nth-child(even) { flex-direction: row-reverse; text-align: right; }
.station-dot { position: relative; flex: none; width: 76px; height: 76px; border-radius: 50%; border: 4px solid var(--tc-fg); background: var(--surface); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.station-dot img { width: 100%; height: 100%; object-fit: cover; }
.station.current .station-dot { box-shadow: 0 0 0 6px var(--tc-bg); }
.station.locked .station-dot { border-style: dashed; opacity: .7; }
.station a { color: var(--text); text-decoration: none; font-weight: 700; }
.station .meta { color: var(--muted); font-size: .88rem; }
.mastery-bar { display: grid; grid-template-columns: 9rem 1fr 3rem; gap: 10px; align-items: center; }

/* Mascota */
.mascot { position: fixed; right: 16px; bottom: 16px; z-index: 40; display: flex; align-items: flex-end; gap: 8px; pointer-events: none; }
.mascot svg { width: 72px; height: 72px; pointer-events: auto; cursor: pointer; }
.mascot .bubble { max-width: 220px; background: var(--surface); border: 1px solid var(--border); border-radius: 14px 14px 4px 14px; padding: 8px 12px; box-shadow: var(--shadow); font-size: .9rem; pointer-events: auto; }
.mascot .bubble:empty { display: none; }
.mascot.lesson-mode { right: auto; left: 12px; bottom: 12px; flex-direction: row-reverse; }
.mascot.lesson-mode svg { width: 52px; height: 52px; }
.mascot.lesson-mode .bubble { border-radius: 14px 14px 14px 4px; }
@media (max-width: 767px) { .mascot svg { width: 56px; height: 56px; } .mascot .bubble { max-width: 170px; } }
body.calm .mascot, body.no-mascot .mascot { display: none; }
.mascot .arm-l, .mascot .arm-r, .mascot .zz, .mascot .eyes-closed, .mascot .brow { transition: transform .3s ease, opacity .3s ease; transform-box: fill-box; }
.mascot .zz, .mascot .eyes-closed, .mascot .brow, .mascot .mouth-o { opacity: 0; }
.mascot[data-state="saluda"] .arm-r { transform: rotate(-120deg); transform-origin: 0% 0%; }
.mascot[data-state="celebra"] .arm-l { transform: rotate(120deg); transform-origin: 100% 0%; }
.mascot[data-state="celebra"] .arm-r { transform: rotate(-120deg); transform-origin: 0% 0%; }
.mascot[data-state="piensa"] .arm-r { transform: rotate(-60deg); transform-origin: 0% 0%; }
.mascot[data-state="piensa"] .brow { opacity: 1; }
.mascot[data-state="anima"] .arm-l { transform: rotate(60deg); transform-origin: 100% 0%; }
.mascot[data-state="duerme"] .zz, .mascot[data-state="duerme"] .eyes-closed { opacity: 1; }
.mascot[data-state="duerme"] .eyes-open { opacity: 0; }
.mascot[data-state="celebra"] .mouth-smile { opacity: 0; }
.mascot[data-state="celebra"] .mouth-o { opacity: 1; }

/* Modal y avisos */
dialog { border: 1px solid var(--border); border-radius: 18px; padding: 0; width: min(520px, calc(100% - 32px)); background: var(--surface); color: var(--text); box-shadow: var(--shadow); }
dialog::backdrop { background: rgba(10, 14, 12, .45); }
.dialog-body { padding: 24px; }
.dialog-actions { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; margin-top: 20px; }
.toasts { position: fixed; left: 50%; transform: translateX(-50%); bottom: 16px; z-index: 60; display: grid; gap: 8px; width: min(460px, calc(100% - 32px)); }
.toast { background: var(--text); color: var(--bg); padding: 12px 16px; border-radius: 12px; box-shadow: var(--shadow); display: flex; gap: 10px; align-items: center; }
.toast button { color: inherit; background: transparent; border: 1px solid currentColor; border-radius: 8px; min-height: 36px; padding: 4px 10px; cursor: pointer; font: inherit; }

/* Glosario */
.gloss { font: inherit; color: inherit; background: none; border: 0; padding: 0; border-bottom: 2px dotted var(--accent); cursor: help; }
.gloss-pop { position: absolute; z-index: 70; max-width: 300px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px; box-shadow: var(--shadow); font-size: .92rem; }
.gloss-pop strong { display: block; margin-bottom: 4px; }

/* Celebraciones */
.confetti { position: fixed; inset: 0; pointer-events: none; z-index: 80; }
.celebrate-msg { animation: pop .45s ease; }
@keyframes pop { 0% { transform: scale(.85); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }
.flip-card { perspective: 900px; }
.flip-inner { transition: transform .6s ease; transform-style: preserve-3d; position: relative; }
.flip-card.flipped .flip-inner { transform: rotateY(180deg); }
.flip-face { backface-visibility: hidden; }
.flip-back { position: absolute; inset: 0; transform: rotateY(180deg); }

/* Insignias y nivel */
.badges { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 150px), 1fr)); }
.badge { text-align: center; padding: 14px 10px; }
.badge svg { width: 64px; height: 64px; }
.badge.locked { opacity: .5; filter: grayscale(1); }
.level-box { display: flex; gap: 14px; align-items: center; }
.level-num { width: 52px; height: 52px; border-radius: 16px; display: flex; align-items: center; justify-content: center; background: var(--gold-bg); color: var(--gold-text); font-weight: 800; font-size: 1.3rem; }

/* Modo enfoque */
body.focus .site-header, body.focus .site-footer, body.focus .lesson-head .secondary, body.focus .theory-area, body.focus .mascot { display: none !important; }
body.focus .lesson-layout { height: calc(100vh - 80px); }

/* Legal */
.legal { padding: 32px 0; }
.legal h1 { margin-bottom: .3em; }
.legal h2 { margin-top: 1.6em; font-size: 1.25rem; }

/* Admin */
.table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.table th, .table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
.bar { height: 10px; background: var(--accent); border-radius: 4px; min-width: 2px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}
body.calm *, body.calm *::before, body.calm *::after { animation: none !important; transition: none !important; }

/* Sin ligaduras en el código: ">=" debe verse como se escribe. */
code, pre, kbd, .block, .mini-editor, .fallback-editor, .console { font-variant-ligatures: none; font-feature-settings: "liga" 0, "calt" 0; }