/* StrategyCheck — sitio público. Tokens del master plan §7 ("estética de confianza") y Fase 0 default #15. */

:root {
  color-scheme: light dark;
  --canvas: #FFFFFF;
  --surface: #F6F7F9;
  --hairline: #E5E7EB;        /* separa superficies */
  --hairline-control: #6B7280; /* bordes de campos y controles (default #15) */
  --ink: #111827;
  --ink-2: #4B5563;
  --ink-3: #6B7280;
  --accent: #1D4ED8;
  --accent-ink: #FFFFFF;
  --pos: #15803D; --pos-bg: #DCFCE7;
  --warn: #B45309; --warn-bg: #FEF3C7;
  --neg: #B91C1C; --neg-bg: #FEE2E2;
  --info-bg: #DBEAFE;
  --radius-card: 16px;
  --radius-btn: 6px;
  --font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", "Geist Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --max: 1120px;
  --gutter: 16px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --canvas: #0B0F17;
    --surface: #131926;
    --hairline: #273043;
    --hairline-control: #8B93A3;
    --ink: #F3F4F6;
    --ink-2: #C3C8D2;
    --ink-3: #9AA1AE;
    --accent: #60A5FA;
    --accent-ink: #0B0F17;
    --pos: #86EFAC; --pos-bg: #0F2E1C;
    --warn: #FCD34D; --warn-bg: #3A2A08;
    --neg: #FCA5A5; --neg-bg: #3C1212;
    --info-bg: #172554;
  }
}
:root[data-theme="dark"] {
  --canvas: #0B0F17;
  --surface: #131926;
  --hairline: #273043;
  --hairline-control: #8B93A3;
  --ink: #F3F4F6;
  --ink-2: #C3C8D2;
  --ink-3: #9AA1AE;
  --accent: #60A5FA;
  --accent-ink: #0B0F17;
  --pos: #86EFAC; --pos-bg: #0F2E1C;
  --warn: #FCD34D; --warn-bg: #3A2A08;
  --neg: #FCA5A5; --neg-bg: #3C1212;
  --info-bg: #172554;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum", "zero";
  overflow-x: hidden;
}
img, svg { max-width: 100%; height: auto; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; font-weight: 600; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.75rem, 1.2rem + 2.4vw, 2.75rem); font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.35rem, 1.1rem + 1.2vw, 1.85rem); }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1em; }
small, .small { font-size: .875rem; }
.muted { color: var(--ink-2); }
.mute { color: var(--ink-3); }
code, pre, .mono { font-family: var(--mono); font-size: .9em; }
pre { white-space: pre-wrap; word-break: break-word; margin: 0; }
ul, ol { padding-left: 1.25rem; margin: 0 0 1em; }
li { margin-bottom: .35em; }
hr { border: 0; border-top: 1px solid var(--hairline); margin: 2rem 0; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--canvas); padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.wrap-narrow { max-width: 760px; margin: 0 auto; padding: 0 var(--gutter); }

/* Franja pre-beta */
.prebeta {
  background: var(--surface);
  border-bottom: 1px solid var(--hairline);
  font-size: .875rem;
  color: var(--ink-2);
  padding: 10px 0;
}

/* Encabezado */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
}
.site-header .wrap { display: flex; align-items: center; gap: 16px; min-height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }
.brand svg { width: 24px; height: 24px; }
.nav { display: none; gap: 20px; margin-left: 12px; }
.nav a { color: var(--ink-2); text-decoration: none; font-size: .95rem; }
.nav a:hover { color: var(--ink); text-decoration: underline; }
.header-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.lang { font-size: .85rem; color: var(--ink-3); white-space: nowrap; }
.lang a { color: var(--ink-2); text-decoration: none; }
.lang a[aria-current] { color: var(--ink); font-weight: 600; }
.header-right .header-cta { display: none; }
@media (min-width: 880px) {
  .nav { display: flex; }
  .header-right .header-cta { display: inline-flex; }
}
details.menu { position: relative; }
details.menu summary { list-style: none; cursor: pointer; padding: 8px; border: 1px solid var(--hairline-control); border-radius: var(--radius-btn); font-size: .9rem; min-height: 44px; display: inline-flex; align-items: center; }
details.menu summary::-webkit-details-marker { display: none; }
details.menu .menu-list { position: absolute; right: 0; top: calc(100% + 8px); background: var(--canvas); border: 1px solid var(--hairline); border-radius: 8px; padding: 8px; min-width: 220px; display: grid; gap: 4px; }
details.menu .menu-list a { display: block; padding: 10px 12px; color: var(--ink); text-decoration: none; border-radius: 6px; }
details.menu .menu-list a:hover { background: var(--surface); }
@media (min-width: 880px) { details.menu { display: none; } }

/* Botones: un solo relleno por sección */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 20px;
  border-radius: var(--radius-btn);
  font: inherit; font-weight: 600; font-size: 1rem;
  text-decoration: none; cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn-primary:hover { filter: brightness(.95); }
.btn-secondary { background: transparent; color: var(--ink); border-color: var(--hairline-control); }
.btn-secondary:hover { background: var(--surface); }
.btn-sm { min-height: 44px; font-size: .95rem; padding: 0 16px; }
.btn[disabled] { opacity: .6; cursor: not-allowed; }

/* Secciones alternadas por contraste de superficie, sin sombras */
.section { padding: 56px 0; }
.section-alt { background: var(--surface); border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.section h2 { margin-bottom: .4em; }
.section .lead { font-size: 1.1rem; color: var(--ink-2); max-width: 720px; }
@media (min-width: 880px) { .section { padding: 80px 0; } }

/* Hero */
.hero { padding: 48px 0 40px; }
.hero-grid { display: grid; gap: 32px; }
@media (min-width: 960px) { .hero-grid { grid-template-columns: 1.05fr .95fr; align-items: start; gap: 48px; } .hero { padding: 72px 0 56px; } }
.hero h1 { margin-bottom: .6em; }
.hero .not { font-size: 1.15rem; color: var(--ink-2); max-width: 600px; }
.hero .ctas { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0 12px; }
.hero .micro { font-size: .875rem; color: var(--ink-3); margin: 0; }
.compliance { font-size: .875rem; color: var(--ink-2); border-top: 1px solid var(--hairline); padding-top: 16px; margin-top: 28px; }

/* Tarjetas y superficies */
.card {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-card);
  padding: 24px;
}
.section-alt .card { background: var(--canvas); }
.section:not(.section-alt) .card { background: var(--surface); border-color: var(--hairline); }
.card h3 { margin-top: 0; }
.grid { display: grid; gap: 16px; }
@media (min-width: 720px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } .grid-2 { grid-template-columns: repeat(2, 1fr); } }

/* Mensaje diario de ejemplo */
.msg {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-card);
  padding: 20px 22px;
  font-family: var(--mono);
  font-size: .86rem;
  line-height: 1.6;
  color: var(--ink);
}
.msg .hd { color: var(--ink-3); border-bottom: 1px solid var(--hairline); padding-bottom: 8px; margin-bottom: 10px; }
.msg .lbl { font-family: var(--font); font-weight: 600; font-size: .78rem; letter-spacing: .04em; text-transform: uppercase; color: var(--ink-3); margin-top: 12px; }
.msg p { margin: 2px 0; }
.caption { font-size: .8rem; color: var(--ink-3); margin-top: 10px; }

/* Etiquetas */
.tag {
  display: inline-block; padding: 1px 7px; border-radius: 4px;
  font-size: .72rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase;
  border: 1px solid var(--hairline-control); color: var(--ink-2); vertical-align: middle;
}
.tag-today { background: var(--pos-bg); color: var(--pos); border-color: transparent; }
.tag-build { background: var(--warn-bg); color: var(--warn); border-color: transparent; }
.tag-beta { background: var(--info-bg); color: var(--ink); border-color: transparent; }
.tag-later { background: var(--surface); color: var(--ink-3); border-color: var(--hairline); }

/* Tablas: números tabulares, alineados a la derecha */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { border-collapse: collapse; width: 100%; font-size: .95rem; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--hairline); vertical-align: top; }
th { font-weight: 600; color: var(--ink-2); font-size: .85rem; letter-spacing: .02em; }
td.num, th.num { text-align: right; }
td.num { white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
td.nowrap, th.nowrap { white-space: nowrap; }
.table-note { font-size: .875rem; color: var(--ink-2); margin: 12px 0 0; max-width: 820px; }
.table-card { border: 1px solid var(--hairline); border-radius: var(--radius-card); overflow: hidden; background: var(--canvas); }
.table-card table { font-size: .92rem; }
.table-card th { background: var(--surface); }
.table-card td:first-child, .table-card th:first-child { padding-left: 16px; }
.table-card td:last-child, .table-card th:last-child { padding-right: 16px; }
/* En pantallas angostas, las tablas anchas se apilan: cada celda con su rótulo (data-label) */
@media (max-width: 719px) {
  .stack-sm thead { display: none; }
  .stack-sm, .stack-sm tbody { display: block; }
  .stack-sm tr { display: block; padding: 10px 0; border-bottom: 1px solid var(--hairline); }
  .stack-sm tr:last-child { border-bottom: 0; }
  .stack-sm td { display: block; border: 0; padding: 4px 16px; }
  .stack-sm td.num { text-align: left; white-space: normal; }
  .stack-sm td::before { content: attr(data-label); display: block; font-size: .72rem; font-weight: 600; letter-spacing: .05em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 2px; }
}

/* Pasos */
.steps { counter-reset: step; display: grid; gap: 16px; }
@media (min-width: 720px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.step { position: relative; padding-top: 8px; }
.step .n { display: inline-flex; width: 32px; height: 32px; align-items: center; justify-content: center; border-radius: 50%; border: 1px solid var(--hairline-control); font-weight: 600; font-size: .9rem; margin-bottom: 12px; }

/* Lista de honestidad */
.rules { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
@media (min-width: 720px) { .rules { grid-template-columns: repeat(2, 1fr); } }
.rules li { padding: 14px 16px; border: 1px solid var(--hairline); border-radius: 10px; background: var(--canvas); margin: 0; }
.section:not(.section-alt) .rules li { background: var(--surface); }

/* Estados (semáforo con glifo + palabra) */
.state { font-weight: 600; white-space: nowrap; }
.state-ok { color: var(--pos); }
.state-warn { color: var(--warn); }
.state-neg { color: var(--neg); }

/* Precios */
.price { font-size: 2rem; font-weight: 700; letter-spacing: -0.02em; margin: 4px 0 0; }
.price small { font-size: .9rem; font-weight: 500; color: var(--ink-3); }
.price-alt { font-size: .875rem; color: var(--ink-3); margin: 0 0 12px; }
.plan ul { padding-left: 1.1rem; font-size: .95rem; }
.plan .btn { width: 100%; margin-top: 8px; }

/* FAQ: contenido siempre en el HTML */
.faq { display: grid; gap: 0; border-top: 1px solid var(--hairline); }
.faq details { border-bottom: 1px solid var(--hairline); }
.faq summary { cursor: pointer; padding: 16px 0; font-weight: 600; font-size: 1.05rem; list-style: none; display: flex; justify-content: space-between; gap: 16px; min-height: 44px; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--ink-3); font-weight: 400; font-size: 1.3rem; }
.faq details[open] summary::after { content: "–"; }
.faq .a { padding: 0 0 18px; color: var(--ink-2); max-width: 760px; }

/* Formulario de lista de espera */
.form { display: grid; gap: 14px; max-width: 560px; }
label { font-weight: 600; font-size: .95rem; }
legend { padding: 0; margin-bottom: 6px; }
fieldset { min-width: 0; }
.field { display: grid; gap: 6px; }
input[type="email"], input[type="text"], select {
  font: inherit; color: var(--ink); background: var(--canvas);
  border: 1px solid var(--hairline-control); border-radius: var(--radius-btn);
  min-height: 48px; padding: 0 14px; width: 100%;
}
.choices { display: grid; gap: 8px; }
.choice { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border: 1px solid var(--hairline-control); border-radius: 8px; cursor: pointer; font-weight: 400; min-height: 44px; }
.choice input { margin-top: 4px; accent-color: var(--accent); }
.choice b { font-weight: 600; }
.hp { position: absolute; left: -9999px; top: -9999px; height: 0; width: 0; overflow: hidden; }
.form-note { font-size: .875rem; color: var(--ink-3); margin: 0; }
.form-msg { padding: 12px 14px; border-radius: 8px; font-size: .95rem; margin: 0; }
.form-msg.ok { background: var(--pos-bg); color: var(--pos); }
.form-msg.err { background: var(--neg-bg); color: var(--neg); }
.form-msg:empty { display: none; }

/* Pie */
.site-footer { border-top: 1px solid var(--hairline); padding: 40px 0 32px; font-size: .9rem; color: var(--ink-2); }
.foot-grid { display: grid; gap: 24px; margin-bottom: 28px; }
@media (min-width: 720px) { .foot-grid { grid-template-columns: repeat(4, 1fr); } }
.site-footer h4 { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); margin-bottom: .6em; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: .4em; }
.site-footer a { color: var(--ink-2); }
.legal { font-size: .8rem; color: var(--ink-3); border-top: 1px solid var(--hairline); padding-top: 16px; }

/* Páginas de texto (metodología, autor, legales) */
.prose { max-width: 760px; }
.prose h2 { margin-top: 2.2em; padding-top: .4em; border-top: 1px solid var(--hairline); }
.prose h3 { margin-top: 1.6em; }
.prose .answer { font-size: 1.1rem; color: var(--ink-2); border-left: 3px solid var(--accent); padding-left: 16px; margin: 1.2em 0 1.6em; }
.prose .formula { background: var(--surface); border: 1px solid var(--hairline); border-radius: 8px; padding: 12px 14px; font-family: var(--mono); font-size: .9rem; margin: 1em 0; overflow-x: auto; }
.prose .example { border: 1px solid var(--hairline); border-radius: 10px; padding: 14px 16px; margin: 1em 0; font-size: .95rem; }
.prose .example b { display: block; font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-3); margin-bottom: 6px; }
.meta-line { font-size: .875rem; color: var(--ink-3); margin-bottom: 1.2em; }
.toc { font-size: .95rem; columns: 1; }
@media (min-width: 720px) { .toc { columns: 2; column-gap: 32px; } }
.toc li { break-inside: avoid; }
dl.defs dt { font-weight: 600; margin-top: .8em; }
dl.defs dd { margin: .2em 0 0; color: var(--ink-2); }

/* Barra fija inferior en móvil (CTA) */
.mobile-cta { position: fixed; left: 0; right: 0; bottom: 0; background: var(--canvas); border-top: 1px solid var(--hairline); padding: 8px var(--gutter); z-index: 40; }
.mobile-cta .btn { width: 100%; min-height: 48px; }
body.has-mobile-cta { padding-bottom: 72px; }
.mobile-cta { transform: translateY(110%); transition: transform .2s ease; }
.mobile-cta.is-visible { transform: none; }
@media (prefers-reduced-motion: reduce) { .mobile-cta { transition: none; } }
@media (min-width: 880px) { .mobile-cta { display: none; } body.has-mobile-cta { padding-bottom: 0; } }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }