/* Problem-Driven Systems Lab — hoja de estilo del sitio publicado.
   La paleta es la misma del portal que corre en `localhost:8080` (crema y
   terracota). Que la web y el producto en ejecucion se vean iguales no es
   cosmetico: quien llega desde la landing y despues levanta el laboratorio
   tiene que reconocer que esta mirando la misma cosa.
   Sin dependencias externas: ni fuentes remotas ni frameworks. */

:root {
  --bg: #f4efe4;
  --bg-grad: linear-gradient(170deg, #faf6ee 0%, #f4efe4 55%, #ede5d8 100%);
  --ink: #152033;
  --muted: #54627a;
  --card: rgba(255, 252, 247, 0.94);
  --card-solid: #fffcf7;
  --line: rgba(21, 32, 51, 0.11);
  --accent: #c7562a;
  --accent-soft: #fff0e8;
  --green: #0f766e;
  --green-soft: #e7fbf6;
  --warn: #b45309;
  --warn-soft: #fef3c7;
  --shadow: 0 14px 36px rgba(21, 32, 51, 0.08);
  --shadow-lg: 0 24px 60px rgba(21, 32, 51, 0.13);
  --radius: 20px;
  --code-bg: #132034;
  --code-ink: #edf3fb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131a24;
    --bg-grad: linear-gradient(170deg, #18212e 0%, #131a24 55%, #0f151d 100%);
    --ink: #eef2f8;
    --muted: #9dabc0;
    --card: rgba(29, 39, 52, 0.92);
    --card-solid: #1d2734;
    --line: rgba(238, 242, 248, 0.14);
    --accent: #f08a5d;
    --accent-soft: rgba(240, 138, 93, 0.14);
    --green: #4bd6bd;
    --green-soft: rgba(75, 214, 189, 0.14);
    --warn: #f0b95d;
    --warn-soft: rgba(240, 185, 93, 0.14);
    --shadow: 0 14px 36px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.45);
    --code-bg: #0c121c;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  background-image: var(--bg-grad);
  background-attachment: fixed;
  font-family: "Aptos", "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
}

/* -- barra superior ------------------------------------------------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
}

.topbar-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
  margin-right: auto;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-size: 1rem;
}

.nav {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  align-items: center;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: 999px;
}

.nav a:hover {
  background: var(--accent-soft);
  color: var(--accent);
  text-decoration: none;
}

.nav a[aria-current="page"] {
  background: var(--accent-soft);
  color: var(--accent);
}

/* -- layout --------------------------------------------------------------- */
.wrap {
  max-width: 1240px;
  margin: 0 auto;
  padding: 28px 20px 90px;
}

.wrap.narrow {
  max-width: 900px;
}

.section {
  margin-top: 56px;
}

.section-head h2 {
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  margin: 0;
}

.section-head p {
  color: var(--muted);
  margin: 8px 0 0;
  max-width: 820px;
}

.section-body {
  margin-top: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}

.grid {
  display: grid;
  gap: 16px;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(215px, 1fr));
}

/* -- hero ----------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 44px 40px;
  border-radius: 28px;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
  margin-top: 24px;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -70px -110px auto;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(199, 86, 42, 0.18), transparent 70%);
  pointer-events: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 18px 0 0;
  font-size: clamp(2.1rem, 5vw, 3.5rem);
  line-height: 1.03;
  letter-spacing: -0.04em;
  max-width: 18ch;
}

.hero-sub {
  margin: 16px 0 0;
  color: var(--muted);
  max-width: 68ch;
  font-size: 1.06rem;
}

.cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.94rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.12s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* -- estadisticas --------------------------------------------------------- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
  margin-top: 30px;
}

.stat {
  padding: 16px 18px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--card-solid) 70%, transparent);
}

.stat small {
  display: block;
  color: var(--muted);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  margin-bottom: 6px;
  font-weight: 700;
}

.stat strong {
  font-size: 1.9rem;
  line-height: 1;
  letter-spacing: -0.03em;
  display: block;
}

.stat span {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
  margin-top: 5px;
}

/* -- tarjetas de caso ----------------------------------------------------- */
.case-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  border-radius: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  transition: transform 0.14s ease, box-shadow 0.14s ease, border-color 0.14s ease;
}

.case-card:hover {
  text-decoration: none;
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
}

.case-card-head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.case-icon {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  border-radius: 13px;
  background: var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-size: 1.2rem;
}

.case-id {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}

.case-card h3 {
  margin: 2px 0 0;
  font-size: 1.02rem;
  letter-spacing: -0.015em;
  line-height: 1.25;
}

.case-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 6px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
  background: rgba(21, 32, 51, 0.06);
  color: var(--muted);
  border: 1px solid var(--line);
}

@media (prefers-color-scheme: dark) {
  .chip {
    background: rgba(238, 242, 248, 0.07);
  }
}

.chip.ok {
  background: var(--green-soft);
  color: var(--green);
  border-color: transparent;
}

.chip.cat {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: transparent;
}

.chip.warn {
  background: var(--warn-soft);
  color: var(--warn);
  border-color: transparent;
}

/* -- filtros -------------------------------------------------------------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 6px;
  align-items: center;
}

.filter-label {
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-right: 4px;
}

.filter {
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
}

.filter:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.filter[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.filter-count {
  margin-left: auto;
  font-size: 0.85rem;
  color: var(--muted);
}

/* -- listas de enlaces ---------------------------------------------------- */
.link-card {
  display: block;
  padding: 18px 20px;
  border-radius: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  transition: transform 0.14s ease, border-color 0.14s ease;
}

.link-card:hover {
  text-decoration: none;
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
}

.link-card strong {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.link-card span {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 6px;
}

/* -- contenido de documento ----------------------------------------------- */
.doc {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 34px 38px 44px;
  margin-top: 22px;
  overflow-wrap: anywhere;
}

.doc h1,
.doc h2,
.doc h3,
.doc h4,
.doc h5,
.doc h6 {
  letter-spacing: -0.02em;
  line-height: 1.25;
  scroll-margin-top: 84px;
}

.doc h1 {
  font-size: 1.95rem;
  margin: 0 0 18px;
}

.doc h2 {
  font-size: 1.45rem;
  margin: 40px 0 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.doc h3 {
  font-size: 1.15rem;
  margin: 28px 0 10px;
}

.doc h4,
.doc h5,
.doc h6 {
  font-size: 1rem;
  margin: 22px 0 8px;
}

.doc p {
  margin: 0 0 14px;
}

.doc ul,
.doc ol {
  margin: 0 0 16px;
  padding-left: 24px;
}

.doc li {
  margin-bottom: 6px;
}

.doc li > ul,
.doc li > ol {
  margin-top: 6px;
}

.doc ul.tasklist {
  list-style: none;
  padding-left: 4px;
}

.doc blockquote {
  margin: 0 0 18px;
  padding: 4px 20px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 12px 12px 0;
  color: var(--ink);
}

.doc blockquote p:last-child {
  margin-bottom: 0;
}

.doc hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 30px 0;
}

.doc img {
  border-radius: 10px;
}

.anchor {
  margin-left: 8px;
  opacity: 0;
  color: var(--muted);
  text-decoration: none;
  font-weight: 400;
  font-size: 0.75em;
}

h1:hover .anchor,
h2:hover .anchor,
h3:hover .anchor,
h4:hover .anchor,
h5:hover .anchor,
h6:hover .anchor {
  opacity: 1;
}

/* -- codigo --------------------------------------------------------------- */
code {
  font-family: "Cascadia Code", "JetBrains Mono", Consolas, monospace;
  font-size: 0.875em;
  background: color-mix(in srgb, var(--ink) 8%, transparent);
  padding: 2px 6px;
  border-radius: 6px;
}

.codeblock {
  position: relative;
  margin: 0 0 18px;
}

.codeblock pre {
  margin: 0;
  padding: 16px 18px;
  border-radius: 14px;
  background: var(--code-bg);
  color: var(--code-ink);
  overflow-x: auto;
}

.codeblock code {
  background: none;
  padding: 0;
  font-size: 12.8px;
  line-height: 1.65;
  color: inherit;
}

/* Dentro de una tarjeta el ancho es estrecho: un comando de docker compose
   cortado a la mitad parece un comando incompleto, asi que ahi se envuelve. */
.card .codeblock pre {
  white-space: pre-wrap;
  word-break: break-word;
}

.code-lang {
  position: absolute;
  top: 8px;
  right: 12px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(237, 243, 251, 0.45);
  pointer-events: none;
}

/* -- tablas --------------------------------------------------------------- */
.tablewrap {
  overflow-x: auto;
  margin: 0 0 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.tablewrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.tablewrap th,
.tablewrap td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.tablewrap th {
  color: var(--muted);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: color-mix(in srgb, var(--ink) 4%, transparent);
}

.tablewrap tr:last-child td {
  border-bottom: none;
}

/* -- indice lateral ------------------------------------------------------- */
.doc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

@media (min-width: 1100px) {
  .doc-layout.with-toc {
    grid-template-columns: minmax(0, 1fr) 260px;
  }
}

.toc {
  position: sticky;
  top: 84px;
  padding: 20px;
  border-radius: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  margin-top: 22px;
}

.toc strong {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--muted);
  margin-bottom: 10px;
}

.toc a {
  display: block;
  padding: 4px 0;
  font-size: 0.86rem;
  color: var(--muted);
  text-decoration: none;
  line-height: 1.4;
}

.toc a:hover {
  color: var(--accent);
}

.toc a.lvl-3 {
  padding-left: 12px;
  font-size: 0.82rem;
}

@media (max-width: 1099px) {
  .toc {
    display: none;
  }
}

/* -- migas ---------------------------------------------------------------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-size: 0.84rem;
  color: var(--muted);
  margin-top: 22px;
}

.crumbs a {
  color: var(--muted);
  text-decoration: none;
}

.crumbs a:hover {
  color: var(--accent);
}

/* -- avisos --------------------------------------------------------------- */
.note {
  padding: 16px 20px;
  border-radius: 14px;
  background: var(--warn-soft);
  border: 1px solid color-mix(in srgb, var(--warn) 30%, transparent);
  color: var(--ink);
  font-size: 0.93rem;
}

.note strong {
  color: var(--warn);
}

/* -- pie ------------------------------------------------------------------ */
.footer {
  border-top: 1px solid var(--line);
  margin-top: 70px;
  background: color-mix(in srgb, var(--card-solid) 55%, transparent);
}

.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 34px 20px 46px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 26px;
}

.footer h4 {
  margin: 0 0 10px;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--muted);
}

.footer ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer li {
  margin-bottom: 6px;
}

.footer a {
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--ink);
}

.footer a:hover {
  color: var(--accent);
}

.footer p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

/* -- utilidades ----------------------------------------------------------- */
.lead {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 72ch;
}

.hidden {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.page-title {
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  letter-spacing: -0.035em;
  line-height: 1.08;
  margin: 14px 0 0;
}

@media (max-width: 720px) {
  .hero {
    padding: 30px 22px;
  }

  .doc {
    padding: 24px 20px 32px;
  }
}