/* Centro de Prueba Guiado — Senior-First A++ (>=7:1 contrast, >=18px text, >=62px buttons, 0 overflow) */
:root {
  --warm: #f4efe3;
  --paper: #fffdf8;
  --white: #ffffff;
  --ink: #162c3b;
  --muted: #263b49;
  --green: #164d43;
  --green-hover: #0f3a32;
  --blue: #163e63;
  --blue-hover: #0e2c48;
  --amber-bg: #fff6e0;
  --amber-border: #6e4714;
  --amber-ink: #2a1b08;
  --red-bg: #fdeeee;
  --red-border: #8a1f24;
  --red-ink: #3d090b;
  --soft-green: #eaf2ef;
  --soft-blue: #e9f0f6;
  --border: #5a6b75;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  min-width: 0;
}

[hidden] {
  display: none !important;
}

html {
  background: var(--warm);
  color: var(--ink);
  overflow-x: clip;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  font-size: 19px;
  line-height: 1.58;
  color: var(--ink);
  background: var(--warm);
  overflow-wrap: anywhere;
}

h1, h2, h3, h4 {
  font-family: Georgia, "Times New Roman", serif;
  color: var(--ink);
  line-height: 1.24;
  margin-top: 0;
}

h1 { font-size: 32px; margin-bottom: 12px; }
h2 { font-size: 25px; margin-bottom: 10px; }
h3 { font-size: 21px; margin-bottom: 8px; }
p, ul, ol { margin-top: 0; }

a {
  color: var(--blue);
  text-underline-offset: 4px;
}

:focus-visible {
  outline: 3px solid #0c3f67;
  outline-offset: 4px;
  box-shadow: 0 0 0 7px #ffffff;
}

.container {
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
  padding: 0 18px;
}

.top-strip {
  background: var(--ink);
  color: var(--white);
  border-bottom: 4px solid #b6d1c6;
  padding: 14px 0;
}

.top-strip-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  font-family: Georgia, serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.top-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 60px;
  padding: 10px 18px;
  border-radius: 10px;
  border: 2px solid #d5e2df;
  background: #1f394c;
  color: var(--white);
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
  text-align: center;
}

.top-link:hover {
  background: #2c4e66;
}

.main-wrap {
  padding: 24px 0 44px;
}

.sim-warning-banner {
  background: var(--amber-bg);
  color: var(--amber-ink);
  border: 3px solid var(--amber-border);
  border-left: 10px solid var(--red-border);
  border-radius: 14px;
  padding: 20px 22px;
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 22px;
}

.sku-context-banner {
  background: var(--soft-blue);
  color: var(--ink);
  border: 2px solid var(--blue);
  border-radius: 12px;
  padding: 14px 18px;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
}

.intro-card,
.step-card {
  background: var(--paper);
  border: 2px solid var(--border);
  border-left: 8px solid var(--green);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 22px;
}

.step-card.blue-accent {
  border-left-color: var(--blue);
}

.step-badge {
  display: inline-block;
  background: var(--blue);
  color: var(--white);
  font-size: 18px;
  font-weight: 800;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 14px;
}

.btn,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 62px;
  min-width: 56px;
  padding: 14px 22px;
  border-radius: 12px;
  border: 2px solid transparent;
  font-family: inherit;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.3;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  white-space: normal;
  overflow-wrap: anywhere;
}

button:disabled {
  opacity: 0.72;
  cursor: wait;
}

.btn-green {
  background: var(--green);
  color: var(--white);
  border-color: var(--green);
}

.btn-green:hover {
  background: var(--green-hover);
  border-color: var(--green-hover);
}

.btn-blue {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}

.btn-blue:hover {
  background: var(--blue-hover);
  border-color: var(--blue-hover);
}

.btn-outline {
  background: var(--white);
  color: var(--ink);
  border-color: var(--blue);
}

.btn-outline:hover {
  background: var(--soft-blue);
}

.btn-danger {
  background: #8a1f24;
  color: var(--white);
  border-color: #8a1f24;
}

.btn-danger:hover {
  background: #671418;
  border-color: #671418;
}

.sim-output {
  margin-top: 16px;
  padding: 18px;
  border-radius: 12px;
  border: 2px solid var(--blue);
  background: var(--soft-blue);
  color: var(--ink);
  font-size: 18px;
}

.sim-output.ok {
  border-color: var(--green);
  background: var(--soft-green);
}

.sim-output.err {
  border-color: var(--red-border);
  background: var(--red-bg);
  color: var(--red-ink);
}

.sim-json {
  margin: 12px 0 0;
  padding: 14px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 10px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 18px;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
  max-width: 100%;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 14px;
}

.mock-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: 14px;
  padding: 20px;
}

.mock-card.wa-card {
  border-color: var(--green);
  background: #f6fbf8;
}

.pin-giant-badge {
  background: var(--blue);
  color: var(--white);
  border-radius: 14px;
  padding: 18px 20px;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 1px;
  text-align: center;
  margin: 14px 0;
}

.module-guide-list,
.plug-checklist {
  padding-left: 22px;
  margin: 14px 0 0;
}

.module-guide-list li,
.plug-checklist li {
  margin-bottom: 12px;
  font-size: 19px;
}

.site-footer {
  background: var(--ink);
  color: var(--white);
  border-radius: 14px;
  padding: 22px;
  font-size: 18px;
}

.site-footer a {
  color: var(--white);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  min-height: 60px;
  margin-right: 18px;
}

@media (max-width: 720px) {
  .container { padding: 0 14px; }
  .intro-card, .step-card { padding: 18px; }
  h1 { font-size: 27px; }
  h2 { font-size: 23px; }
  .grid-2 { grid-template-columns: 1fr; }
  .btn, button, .top-link { width: 100%; }
  .pin-giant-badge { font-size: 23px; }
}