:root {
  --paper: #fbf6e9;
  --paper-2: #f3ead2;
  --ink: #2b2118;
  --ink-soft: #5d4f40;
  --red: #d8342b;
  --red-dark: #a8231c;
  --gold: #f4a915;
  --blue: #2f7fd0;
  --card: #ffffff;
  --line: #2b2118;
  --shadow: 4px 5px 0 rgba(43, 33, 24, 0.85);
  --radius: 14px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background-color: var(--paper);
  background-image:
    radial-gradient(rgba(43, 33, 24, 0.05) 1px, transparent 1px),
    linear-gradient(180deg, #fffaf0 0%, var(--paper) 40%, var(--paper-2) 100%);
  background-size: 18px 18px, 100% 100%;
  color: var(--ink);
  font: 400 17px/1.6 "Nunito", system-ui, sans-serif;
}

a { color: var(--blue); }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.88em;
  background: var(--paper-2);
  border: 1px solid rgba(43, 33, 24, 0.15);
  border-radius: 6px;
  padding: 1px 6px;
  word-break: break-all;
}

/* Barra superior */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 24px;
  background: rgba(251, 246, 233, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 3px solid var(--line);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 800 22px/1 "Baloo 2", sans-serif;
  color: var(--red);
  text-decoration: none;
}

.nav-brand img { image-rendering: pixelated; }

.nav-links {
  display: flex;
  gap: 18px;
  margin-left: auto;
}

.nav-links a {
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.nav-links a:hover { color: var(--red); }

.lang {
  font: 800 14px/1 "Nunito", sans-serif;
  color: var(--ink);
  background: var(--gold);
  border: 2px solid var(--line);
  border-radius: 999px;
  padding: 7px 12px;
  cursor: pointer;
  box-shadow: 2px 2px 0 var(--line);
}

/* Portada */
.hero {
  max-width: 980px;
  margin: 0 auto;
  padding: 40px 16px 56px;
  text-align: center;
}

.hero-logo {
  width: min(640px, 100%);
  height: auto;
  filter: drop-shadow(6px 8px 0 rgba(43, 33, 24, 0.35));
  transform: rotate(-1.5deg);
}

.hero-tag {
  max-width: 640px;
  margin: 18px auto 26px;
  font-size: 1.15rem;
  font-weight: 600;
}

.hero-cta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-note {
  max-width: 600px;
  margin: 22px auto 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* Botones de papel */
.btn {
  display: inline-block;
  font: 800 1.15rem/1 "Baloo 2", sans-serif;
  text-decoration: none;
  padding: 14px 26px 12px;
  border: 3px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.btn:hover { transform: translate(-1px, -2px); box-shadow: 6px 8px 0 rgba(43, 33, 24, 0.85); }
.btn:active { transform: translate(2px, 3px); box-shadow: 1px 1px 0 rgba(43, 33, 24, 0.85); }

.btn-primary { background: var(--red); color: #fff; }
.btn-paper { background: var(--card); color: var(--ink); }

/* Secciones */
.section {
  max-width: 1040px;
  margin: 0 auto;
  padding: 40px 16px;
}

.cut {
  display: table;
  margin: 0 auto 28px;
  padding: 6px 22px 2px;
  font: 800 2.1rem/1.2 "Baloo 2", sans-serif;
  color: #fff;
  background: var(--red);
  border: 3px solid var(--line);
  box-shadow: var(--shadow);
  transform: rotate(-1.2deg);
  clip-path: polygon(0 4%, 3% 0, 97% 3%, 100% 0, 99% 96%, 96% 100%, 2% 97%, 0 100%);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}

.card {
  background: var(--card);
  border: 3px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
}

.card:nth-child(odd) { transform: rotate(-0.6deg); }
.card:nth-child(even) { transform: rotate(0.6deg); }

.card h3, .steps h3 {
  margin: 0 0 6px;
  font: 800 1.35rem/1.2 "Baloo 2", sans-serif;
  color: var(--red-dark);
}

.card p { margin: 0; }

/* Galería: capturas de las dos pantallas */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 26px;
}

.gallery figure {
  margin: 0;
  background: var(--card);
  border: 3px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 12px 12px 8px;
}

.gallery img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
  image-rendering: pixelated;
  background: #1d1b22;
}

.gallery figcaption {
  padding-top: 8px;
  text-align: center;
  font-weight: 800;
}

/* Pasos de instalación */
.steps {
  list-style: none;
  counter-reset: step;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.steps li {
  counter-increment: step;
  position: relative;
  background: var(--card);
  border: 3px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 20px 16px 76px;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 16px;
  top: 16px;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  font: 800 1.5rem/1 "Baloo 2", sans-serif;
  color: var(--ink);
  background: var(--gold);
  border: 3px solid var(--line);
  border-radius: 50%;
}

.steps p { margin: 0; }

.qr-title { margin: 14px 0 6px; font: 800 1.15rem/1.2 "Baloo 2", sans-serif; }
.qr-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 12px;
}
.qr {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 14px;
  background: var(--paper-2);
  border: 2px dashed var(--line);
  border-radius: var(--radius);
  text-align: center;
}
.qr img {
  width: 180px;
  max-width: 100%;
  height: auto;
  background: #fff;
  border: 3px solid var(--line);
  border-radius: 8px;
  padding: 6px;
}
.qr figcaption { line-height: 1.5; }
.qr figcaption strong { font: 800 1.1rem/1.2 "Baloo 2", sans-serif; }
.qr figcaption span { color: var(--ink-soft); font-size: .92rem; }
.qr figcaption code { font-size: .85rem; }
.hash-label { margin: 10px 0 2px; font-weight: 700; }
@media (max-width: 560px) {
  .qr-pair { grid-template-columns: 1fr; }
}

.hash {
  display: block;
  margin-top: 8px;
  padding: 8px 10px;
}

.center { text-align: center; margin-top: 30px; }

/* FAQ */
details {
  background: var(--card);
  border: 3px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 14px;
  padding: 12px 18px;
}

summary {
  cursor: pointer;
  font: 800 1.15rem/1.3 "Baloo 2", sans-serif;
}

details p { margin: 10px 0 2px; }

/* Apoyo (widget de Ko-fi) */
.support {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  max-width: 560px;
  margin: 0 auto;
  background: var(--card);
  border: 3px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  text-align: center;
}

.support p { margin: 0; font-weight: 600; }

#kofiframe {
  width: 100%;
  border: none;
  padding: 4px;
  background: #f9f9f9;
  border-radius: 10px;
}

/* Pie */
.footer {
  margin-top: 30px;
  padding: 28px 16px 36px;
  border-top: 3px solid var(--line);
  background: var(--paper-2);
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.footer p { max-width: 820px; margin: 0 auto 10px; }

@media (max-width: 720px) {
  .nav { padding: 10px 16px; }
  .nav-links { display: none; }
  .lang { margin-left: auto; }
  .cut { font-size: 1.7rem; }
  .steps li { padding-left: 68px; }
}