/* ============================================================
   Tiancode — Website pages
   Páginas internas (SPA), documentación (TOC + árbol de
   arquitectura), FAQ, novedades, guía/portable y descarga.
   ============================================================ */

/* ================= Páginas internas (SPA) ================= */
.page { display: none; padding: 88px 0 120px; }
.page.page--active { display: block; }
body.page-open .home-content { display: none; }

.page-inner { max-width: 760px; margin-inline: auto; }
.page-inner--wide { max-width: 960px; }

.page-toolbar { margin-bottom: 24px; }
.page-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-2);
  box-shadow: var(--shadow-sm);
  transition: color 0.18s ease, border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}
.page-back:hover { color: var(--accent); border-color: var(--accent); transform: translateX(-3px); box-shadow: var(--shadow-md); }
.page-back svg { width: 16px; height: 16px; }

.page-head { margin-bottom: 42px; }
.page-title {
  margin: 0 0 14px;
  font-size: clamp(2rem, 4.5vw, 2.9rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.12;
}
.page-sub { margin: 0; max-width: 640px; font-size: 16.5px; color: var(--text-2); }
.page-updated { margin: 14px 0 0; font-size: 13px; color: var(--text-3); }

/* Tipografía del cuerpo de las páginas (legal, docs, etc.) */
.page-body h2 {
  position: relative;
  margin: 46px 0 14px;
  padding-left: 14px;
  font-size: 22px;
  letter-spacing: -0.015em;
}
/* Barra de acento en los encabezados de sección */
.page-body h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3em;
  bottom: 0.3em;
  width: 3px;
  border-radius: 3px;
  background: var(--accent-gradient);
}
.page-body h2:first-child { margin-top: 0; }
.page-body p { margin: 0 0 14px; font-size: 15px; color: var(--text-2); }
.page-list { margin: 0 0 16px; padding-left: 22px; font-size: 15px; color: var(--text-2); }
.page-list li { margin-bottom: 8px; }
.page-list li::marker { color: var(--accent); }
.page-body code {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 2px 7px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--term-bg);
  color: var(--accent-2);
  white-space: nowrap;
}

/* Tablas genéricas (docs, descarga) */
.page-body table {
  width: 100%;
  margin: 18px 0;
  border-collapse: collapse;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  font-size: 14px;
}
.page-body table th {
  padding: 11px 14px;
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}
.page-body table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-2);
}
.page-body table tr:last-child td { border-bottom: 0; }
.page-body table tbody tr { transition: background 0.15s ease; }
.page-body table tbody tr:hover { background: var(--accent-soft); }

/* Bloques de código (licencia MIT, comandos, rutas) */
.code-block {
  position: relative;
  margin: 18px 0;
  padding: 20px 22px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--term-bg);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-2);
  overflow-x: auto;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03), var(--shadow-sm);
}
[data-theme="light"] .code-block { box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6), var(--shadow-sm); }
.code-block code { border: 0; padding: 0; background: none; color: inherit; white-space: pre; }

/* Caja de nota/info con icono */
.page-note {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 28px;
  padding: 16px 18px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--accent-soft);
}
.page-note svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 2px; color: var(--accent); }
.page-note p { margin: 0; font-size: 14px; color: var(--text-2); }

/* ================= Documentación: índice (TOC) ================= */
.docs-toc { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 34px; }
.toc-label {
  flex-basis: 100%;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
}
.docs-toc a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-2);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.18s ease, color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}
.docs-toc a:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); box-shadow: 0 10px 22px -10px rgba(99, 102, 241, 0.45); }
.toc-num { font-weight: 700; color: var(--accent); }

/* ================= FAQ (acordeón animado) ================= */
.faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
.faq-item:hover { border-color: var(--border-strong); }
.faq-item.is-open { border-color: var(--accent); box-shadow: var(--shadow-md); }
/* Variante <details> (páginas estáticas, funciona sin JS) */
details.faq-item[open] { border-color: var(--accent); box-shadow: var(--shadow-md); }
details.faq-item .faq-q { list-style: none; cursor: pointer; }
details.faq-item .faq-q::-webkit-details-marker { display: none; }
details.faq-item[open] .faq-q svg { transform: rotate(180deg); color: var(--accent); }
details.faq-item[open] .faq-a { grid-template-rows: 1fr; }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 17px 20px;
  font-size: 15.5px;
  font-weight: 600;
  text-align: left;
  color: var(--text);
  transition: color 0.18s ease;
}
.faq-q:hover { color: var(--accent); }
.faq-q svg { width: 17px; height: 17px; flex-shrink: 0; color: var(--text-3); transition: transform 0.3s ease, color 0.2s ease; }
.faq-item.is-open .faq-q svg { transform: rotate(180deg); color: var(--accent); }

/* Animación de apertura: grid-template-rows 0fr → 1fr */
.faq-a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.35s ease; }
.faq-item.is-open .faq-a { grid-template-rows: 1fr; }
.faq-a-inner { overflow: hidden; }
.faq-a-inner p { margin: 0; padding: 0 20px 18px; font-size: 14.5px; color: var(--text-2); }

/* ================= Novedades (changelog) ================= */
.news-version { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.news-version h2 { margin: 0; font-size: 26px; letter-spacing: -0.01em; }
.news-tag {
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
}
.news-date { font-size: 13px; color: var(--text-3); }
.news-block { margin-top: 34px; }
.news-block h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
}
.news-block h3 svg { width: 15px; height: 15px; }
.news-list { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 10px; }
.news-list li { display: flex; align-items: flex-start; gap: 12px; font-size: 15px; color: var(--text-2); }
.news-list li svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 4px; }
.news-block--new h3 svg, .news-list--new li svg { color: var(--accent-2); }
.news-block--imp h3 svg, .news-list--imp li svg { color: var(--accent); }
.news-block--fix h3 svg, .news-list--fix li svg { color: #10b981; }

/* ================= Pasos numerados (guía y portable) ================= */
.qsteps-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 22px; }
.qstep {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.qstep:hover { transform: translateY(-3px); border-color: var(--accent); }
.qstep-num {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.qstep h3 { margin: 0 0 5px; font-size: 15.5px; }
.qstep p { margin: 0; font-size: 14px; color: var(--text-2); }

/* ================= Página de descarga ================= */
.dl-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 34px; }
.dl-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 30px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.25s ease, box-shadow 0.25s ease;
}
.dl-card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow-md); }
.dl-card h3 { margin: 0; font-size: 19px; }
.dl-card p { margin: 0; font-size: 14.5px; color: var(--text-2); }
.dl-card .btn { margin-top: auto; }

/* Icono grande de la descarga (tile con gradiente) */
.dl-icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 16px;
  color: #fff;
  background: var(--accent-gradient);
  box-shadow: 0 12px 26px -10px rgba(99, 102, 241, 0.6);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.dl-card:hover .dl-icon { transform: scale(1.08) rotate(-4deg); }
.dl-icon svg { width: 26px; height: 26px; }

.dl-file {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-3);
}
.dl-file svg { width: 14px; height: 14px; flex-shrink: 0; color: var(--accent); }
.dl-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.dl-chip {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--border);
}
.dl-reqs { margin-top: 44px; max-width: 760px; }
.dl-reqs h2 { margin: 0 0 6px; font-size: 22px; }
.dl-reqs ul { margin: 14px 0 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 10px; }
.dl-reqs li { display: flex; align-items: flex-start; gap: 10px; font-size: 15px; color: var(--text-2); }
.dl-reqs li svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 4px; color: var(--accent-2); }
.dl-news { font-weight: 600; color: var(--accent); }
.dl-news:hover { text-decoration: underline; }

/* ================================================================
   Arquitectura del proyecto: diagrama de árbol + stack tecnológico
   ================================================================ */
.arch-tree {
  margin: 18px 0 6px;
  padding: 22px 24px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--term-bg);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.9;
  overflow-x: auto;
}
.arch-row { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.arch-row--child { margin-left: 26px; }
.arch-dir {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}
.arch-dir svg { width: 15px; height: 15px; flex-shrink: 0; color: var(--accent); }
.arch-desc { font-size: 12px; color: var(--text-3); }
.arch-sep { color: var(--grid); user-select: none; }

.stack-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 4px; }
.stack-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
}
.stack-chip svg { width: 12px; height: 12px; }

/* ================= Ajustes responsive de las secciones nuevas ================= */
@media (max-width: 900px) {
  .dl-grid, .qsteps-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .page { padding: 64px 0 96px; }
}

@media (prefers-reduced-motion: reduce) {
  .faq-a { transition: none; }
  .qstep:hover, .dl-card:hover, .docs-toc a:hover, .dl-card:hover .dl-icon { transform: none; }
}

.release-facts { margin: 0; padding: 0 0 0 1.3rem; display: grid; gap: 1.5rem; line-height: 1.8; }
.release-facts li::marker { color: var(--accent, #65bfff); }

.page-body :not(pre) > code { overflow-wrap: anywhere; white-space: normal; }