/* ===========================================================
   dotai — Documentación
   Paleta sobria con acentos de color controlados.
   =========================================================== */

:root {
  /* Neutros */
  --bg:            #f7f8fb;
  --bg-alt:        #ffffff;
  --surface:       #ffffff;
  --ink:           #0f172a;
  --ink-soft:      #334155;
  --ink-muted:     #64748b;
  --border:        #e2e8f0;
  --border-strong: #cbd5e1;

  /* Acentos */
  --violet:    #6d5dfc;
  --violet-50: #eef0ff;
  --emerald:   #10b981;
  --emerald-50:#ecfdf5;
  --amber:     #f59e0b;
  --amber-50:  #fef3c7;
  --rose:      #ef4444;
  --rose-50:   #fee2e2;
  --cyan:      #0891b2;
  --cyan-50:   #ecfeff;

  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 6px 16px -8px rgba(15, 23, 42, 0.18);
  --shadow-lg: 0 20px 40px -20px rgba(15, 23, 42, 0.25);

  --font-sans: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --maxw: 1140px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:            #0b1020;
    --bg-alt:        #0f172a;
    --surface:       #111a2e;
    --ink:           #e2e8f0;
    --ink-soft:      #cbd5e1;
    --ink-muted:     #94a3b8;
    --border:        #1e293b;
    --border-strong: #334155;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 6px 16px -8px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 20px 40px -20px rgba(0, 0, 0, 0.7);
  }
}

/* ----- Reset mínimo ----- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--violet); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .4em; color: var(--ink); letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4vw + 1rem, 3.25rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 2vw + 1rem, 2.25rem); font-weight: 700; }
h3 { font-size: 1.125rem; font-weight: 600; }
p { margin: 0 0 1em; color: var(--ink-soft); }
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--violet-50);
  color: var(--violet);
  padding: 0.1em 0.4em;
  border-radius: 6px;
}
@media (prefers-color-scheme: dark) {
  code { background: rgba(109, 93, 252, 0.18); color: #c7c1ff; }
}

/* ----- Layout ----- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: clamp(3rem, 6vw, 5.5rem) 0;
}
.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 2.5rem;
}
.section-head p { color: var(--ink-muted); font-size: 1.05rem; }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--violet);
  background: var(--violet-50);
  padding: 0.3em 0.8em;
  border-radius: 999px;
  margin-bottom: 0.85rem;
}
.eyebrow-emerald { color: var(--emerald); background: var(--emerald-50); }
.eyebrow-amber   { color: #b45309; background: var(--amber-50); }
.eyebrow-rose    { color: var(--rose); background: var(--rose-50); }
.eyebrow-cyan    { color: var(--cyan); background: var(--cyan-50); }
.eyebrow-violet  { color: var(--violet); background: var(--violet-50); }

/* ----- Header ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}
@media (prefers-color-scheme: dark) {
  .site-header { background: rgba(15, 23, 42, 0.85); }
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 1rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--ink);
  text-decoration: none;
}
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 28px; height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--violet), var(--cyan));
  color: #fff;
  font-size: 0.85rem;
}
.brand-name { letter-spacing: -0.01em; }

.nav-links {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}
.nav-links a {
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a[href="#inicio"] {
  background: var(--ink);
  color: #fff;
  padding: 0.45em 0.9em;
  border-radius: 999px;
  font-weight: 600;
}
.nav-links a[href="#inicio"]:hover { background: var(--violet); }

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem;
  cursor: pointer;
  width: 40px; height: 40px;
  flex-direction: column;
  gap: 4px;
  justify-content: center;
  align-items: center;
}
.nav-toggle span {
  display: block;
  width: 18px; height: 2px;
  background: var(--ink);
  border-radius: 2px;
}

@media (max-width: 880px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 1.25rem 1rem;
    display: none;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a {
    width: 100%;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
  }
  .nav-links a[href="#inicio"] {
    text-align: center;
    margin-top: 0.5rem;
    border-bottom: none;
  }
}

/* ----- Hero ----- */
.hero {
  position: relative;
  padding: clamp(3rem, 6vw, 5.5rem) 0;
  background:
    radial-gradient(60% 80% at 80% 10%, rgba(109, 93, 252, 0.10), transparent 60%),
    radial-gradient(50% 70% at 10% 90%, rgba(8, 145, 178, 0.08), transparent 60%),
    var(--bg);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}
@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2rem; }
}
.hero-text h1 { margin-bottom: 1rem; }
.lead {
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 54ch;
}
.hero-cta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 1.75rem 0;
}
.stack-chips {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.stack-chips li {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ink-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.3em 0.75em;
  border-radius: 999px;
}

.hero-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 1.25rem;
  position: relative;
}
.hero-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: calc(var(--radius) + 1px);
  padding: 1px;
  background: linear-gradient(135deg, rgba(109, 93, 252, 0.4), rgba(8, 145, 178, 0.3));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

/* ----- Botones ----- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  font-size: 0.95rem;
  transition: transform 0.08s ease, background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: var(--ink);
  color: #fff;
}
.btn-primary:hover { background: var(--violet); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--border-strong);
}
.btn-ghost:hover { border-color: var(--ink); }
.btn-sm { padding: 0.4rem 0.85rem; font-size: 0.85rem; }

/* ----- Code blocks ----- */
.code-block {
  background: #0f172a;
  color: #e2e8f0;
  border-radius: var(--radius-sm);
  padding: 1rem 1.1rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  margin: 0;
}
.code-block code { background: transparent; color: inherit; padding: 0; }
.c-comment { color: #94a3b8; }

/* ----- Cards (estructura) ----- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-decoration: none;
  color: var(--ink);
  display: block;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  box-shadow: var(--shadow-sm);
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}
.card h3 { font-family: var(--font-mono); font-size: 1rem; margin-bottom: 0.35em; }
.card p { font-size: 0.92rem; color: var(--ink-muted); margin: 0; }
.card-icon {
  display: inline-grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: 10px;
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}
.card-violet  .card-icon { background: var(--violet-50);  color: var(--violet); }
.card-emerald .card-icon { background: var(--emerald-50); color: var(--emerald); }
.card-rose    .card-icon { background: var(--rose-50);    color: var(--rose); }
.card-amber   .card-icon { background: var(--amber-50);   color: #b45309; }
.card-cyan    .card-icon { background: var(--cyan-50);    color: var(--cyan); }
.card-slate   .card-icon { background: #f1f5f9; color: var(--ink-soft); }

/* ----- Tablas ----- */
.table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: auto;
  box-shadow: var(--shadow-sm);
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  min-width: 640px;
}
.data-table th, .data-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.data-table th {
  background: var(--bg);
  font-weight: 600;
  color: var(--ink-soft);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover td { background: var(--bg); }

.pill {
  display: inline-block;
  padding: 0.18em 0.65em;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 999px;
  font-family: var(--font-mono);
}
.pill-violet  { background: var(--violet-50);  color: var(--violet); }
.pill-cyan    { background: var(--cyan-50);    color: var(--cyan); }
.pill-emerald { background: var(--emerald-50); color: var(--emerald); }
.pill-amber   { background: var(--amber-50);   color: #b45309; }
.pill-rose    { background: var(--rose-50);    color: var(--rose); }

/* ----- Commands / Rules ----- */
.commands-grid, .rules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}
.command, .rule {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}
.command header { margin-bottom: 0.5rem; }
.cmd {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 600;
  background: var(--ink);
  color: #fff;
  padding: 0.4em 0.7em;
  border-radius: 8px;
}
.command p, .rule p { margin: 0; font-size: 0.92rem; color: var(--ink-muted); }
.rule h3 { font-family: var(--font-mono); color: var(--violet); margin-bottom: 0.4em; }

/* ----- Callout ----- */
.callout {
  margin-top: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--violet);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
}
.callout h4 { margin: 0 0 0.6rem; font-size: 0.95rem; }
.callout ul { margin: 0; padding-left: 1rem; }
.callout li { font-size: 0.92rem; color: var(--ink-soft); margin-bottom: 0.25rem; }

/* ----- Tabs (infografías) ----- */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: center;
  margin-bottom: 1.5rem;
}
.tab {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--ink-soft);
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.tab:hover { color: var(--ink); border-color: var(--border-strong); }
.tab.is-active {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.tab-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
}
.tab-panel[hidden] { display: none; }
.panel-desc {
  text-align: center;
  color: var(--ink-muted);
  max-width: 60ch;
  margin: 0 auto 1.25rem;
}
.infographic-link {
  display: block;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg);
  border: 1px solid var(--border);
  cursor: zoom-in;
}
.infographic-link img {
  width: 100%;
  height: auto;
  display: block;
}
.infographic-actions {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1rem;
}

/* ----- Steps ----- */
.steps {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1.5rem;
  max-width: 800px;
  margin-inline: auto;
}
.steps li {
  counter-increment: step;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  position: relative;
  padding-left: 4.5rem;
  box-shadow: var(--shadow-sm);
}
.steps li::before {
  content: counter(step);
  position: absolute;
  left: 1.25rem;
  top: 1.25rem;
  width: 36px; height: 36px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--violet), var(--cyan));
  color: #fff;
  border-radius: 50%;
  font-weight: 700;
  font-size: 1rem;
}
.steps h3 { font-size: 1.05rem; margin-bottom: 0.6rem; }
.steps p { margin: 0.5rem 0 0; font-size: 0.92rem; }

/* ----- Footer ----- */
.site-footer {
  background: var(--ink);
  color: #cbd5e1;
  padding: 3rem 0 1.5rem;
  margin-top: 4rem;
}
.site-footer .brand { color: #fff; }
.site-footer h4 {
  color: #fff;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 0.4rem; }
.site-footer a { color: #cbd5e1; font-size: 0.92rem; }
.site-footer a:hover { color: #fff; }
.footer-tagline { color: #94a3b8; font-size: 0.92rem; max-width: 32ch; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
}
@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
}
.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 1.25rem;
  margin-top: 2rem;
  color: #64748b;
  font-size: 0.85rem;
  text-align: center;
}

/* ----- Selección y focus ----- */
::selection { background: var(--violet); color: #fff; }
a:focus-visible, button:focus-visible, .tab:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
  border-radius: 6px;
}