/* ==========================================================================
   Reconoce el Engaño — hoja de estilos
   Sistema de diseño pensado para personas adultas mayores:
   texto grande por defecto, alto contraste, controles amplios,
   sin animaciones agresivas, foco de teclado siempre visible.
   ========================================================================== */

:root {
  /* Color */
  --color-bg: #FAFBFC;
  --color-surface: #FFFFFF;
  --color-surface-muted: #F1F5F8;
  --color-ink: #22303A;
  --color-ink-soft: #4B5A63;
  --color-primary: #1B3A4B;
  --color-primary-dark: #12262F;
  --color-accent: #006F62;
  --color-accent-soft: #E7F4F1;
  --color-safe: #3F7355;
  --color-safe-soft: #E4EFE7;
  --color-danger: #A63A3A;
  --color-danger-soft: #F6E7E5;
  --color-border: #D8E0E7;
  --color-control-border: #697C8B;
  --color-on-primary: #FFFFFF;
  --color-focus: #006F62;
  --color-secondary: var(--color-accent);
  --color-header-border: #77909F;
  --color-header-muted: #D8E8F2;

  /* Type */
  --font-display: -apple-system, "Segoe UI", Arial, sans-serif;
  --font-body: -apple-system, "Segoe UI", Arial, sans-serif;

  /* Base sizing — overridden by .size-grande / .size-muy-grande on <html> */
  --step-base: 20px;
  --step-sm: 0.9em;
  --step-lg: 1.4em;
  --step-xl: 1.9em;

  --radius-card: 14px;
  --radius-control: 10px;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --shadow-card: 0 2px 8px rgb(18 38 47 / 4%);
  --focus-ring: 3px solid var(--color-focus);
}

html.size-grande { --step-base: 23px; }
html.size-muy-grande { --step-base: 27px; }

* { box-sizing: border-box; }

html { font-size: var(--step-base); }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-ink);
}

body {
  font-family: var(--font-body);
  font-size: var(--step-base);
  line-height: 1.55;
}

h1, h2, h3 { font-family: var(--font-display); color: var(--color-primary-dark); margin: 0 0 0.5em; line-height: 1.2; }
h1 { font-size: var(--step-xl); font-weight: 700; }
h2 { font-size: var(--step-lg); font-weight: 700; }
h3 { font-size: 1.15em; font-weight: 700; }

p { margin: 0 0 1em; }

button { font-family: inherit; }

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

:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 12px 20px;
  z-index: 100;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ---------------- Header ---------------- */

.app-header {
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 14px 20px;
}

.app-header__inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2em;
  height: 2em;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-primary-dark);
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
}

.text-size-control {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--color-primary-dark);
  padding: 6px 10px;
  border-radius: var(--radius-control);
}

.text-size-control__label {
  font-size: var(--step-sm);
  margin-right: 4px;
  color: var(--color-header-muted);
}

.text-size-btn {
  background: transparent;
  border: 2px solid var(--color-header-border);
  color: var(--color-on-primary);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  font-weight: 700;
  min-width: 48px;
  min-height: 48px;
}

.text-size-btn[aria-pressed="true"] {
  background: var(--color-accent-soft);
  border-color: var(--color-accent-soft);
  color: var(--color-primary-dark);
}

/* ---------------- Layout ---------------- */

.app-main { padding: 28px 16px 60px; }

.app-container {
  max-width: 640px;
  margin: 0 auto;
}

.app-footer {
  text-align: center;
  font-size: var(--step-sm);
  color: var(--color-ink-soft);
  padding: 18px 16px 32px;
  max-width: 640px;
  margin: 0 auto;
}

/* ---------------- Cards / screens ---------------- */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
  margin-bottom: 20px;
}

.screen-intro .card { text-align: left; }

.progress-track {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  font-size: var(--step-sm);
  color: var(--color-ink-soft);
}

.progress-bar {
  flex: 1;
  height: 10px;
  background: var(--color-surface-muted);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.progress-bar__fill {
  height: 100%;
  background: var(--color-accent);
  border-radius: 999px;
  transition: width 0.4s ease;
}

/* ---------------- Buttons ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 56px;
  padding: 12px 22px;
  border-radius: var(--radius-control);
  border: 2px solid transparent;
  font-size: 1.05em;
  font-weight: 700;
  cursor: pointer;
  width: 100%;
  text-align: center;
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: transform 0.08s ease, background 0.15s ease;
}
.btn:active { transform: scale(0.98); }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
}
.btn-primary:hover { background: var(--color-primary-dark); }

.btn-outline {
  background: var(--color-surface);
  color: var(--color-primary-dark);
  border-color: var(--color-primary);
}
.btn-outline:hover { background: var(--color-surface-muted); }

.btn-accent {
  background: var(--color-accent-soft);
  color: var(--color-primary-dark);
}

.btn-block-group {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

@media (min-width: 520px) {
  .btn-block-group--pair { grid-template-columns: 1fr 1fr; }
}

.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ---------------- Message mockups ---------------- */

.mockup {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  margin-bottom: 22px;
}

.mockup__channel {
  background: var(--color-surface-muted);
  padding: 8px 16px;
  font-size: var(--step-sm);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-ink-soft);
  border-bottom: 1px solid var(--color-border);
}

.mockup__header {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.mockup__avatar {
  width: 2.4em;
  height: 2.4em;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-on-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.mockup__meta { min-width: 0; }
.mockup__sender { font-weight: 700; word-break: break-word; }
.mockup__subline { color: var(--color-ink-soft); font-size: 0.92em; word-break: break-word; }

.mockup__body {
  padding: 18px 16px;
  background: var(--color-surface);
}

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

.mockup__cta {
  display: inline-block;
  margin-top: 10px;
  padding: 10px 16px;
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-radius: 8px;
  font-weight: 700;
}

.mockup--chat .mockup__body { background: var(--color-surface-muted); padding: 16px; }

.chat-bubble {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 12px 14px;
  max-width: 90%;
}

/* ---------------- Question / prompt ---------------- */

.prompt-heading { margin-bottom: 4px; }
.prompt-sub { color: var(--color-ink-soft); margin-bottom: 0; }

/* ---------------- Checklist ---------------- */

.checklist { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }

.checklist__item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-control);
  padding: 14px;
  cursor: pointer;
  background: var(--color-surface);
}

.checklist__item:has(input:checked) {
  border-color: var(--color-primary);
  background: var(--color-accent-soft);
}

.checklist__item input {
  width: 1.4em;
  height: 1.4em;
  margin-top: 0.1em;
  flex-shrink: 0;
  accent-color: var(--color-primary);
}

/* ---------------- Feedback ---------------- */

.feedback-banner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border-radius: var(--radius-control);
  margin-bottom: 18px;
  font-weight: 700;
  font-size: 1.1em;
}

.feedback-banner--correct { background: var(--color-safe-soft); color: var(--color-safe); }
.feedback-banner--incorrect { background: var(--color-danger-soft); color: var(--color-danger); }

.feedback-banner__icon {
  width: 2em;
  height: 2em;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-on-primary);
  font-size: 1rem;
}
.feedback-banner--correct .feedback-banner__icon { background: var(--color-safe); }
.feedback-banner--incorrect .feedback-banner__icon { background: var(--color-danger); }

.signal-review { list-style: none; margin: 0 0 18px; padding: 0; display: grid; gap: 10px; }

.signal-review__item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--color-surface-muted);
}

.signal-review__item--hit { background: var(--color-safe-soft); }
.signal-review__item--missed { background: var(--color-danger-soft); }

.tag {
  display: inline-block;
  font-size: var(--step-sm);
  font-weight: 700;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--color-surface-muted);
  color: var(--color-ink-soft);
  margin-bottom: 10px;
}

/* ---------------- Results screen ---------------- */

.results-grid {
  display: grid;
  gap: 16px;
  margin: 20px 0;
}

@media (min-width: 480px) {
  .results-grid { grid-template-columns: 1fr 1fr; }
}

.stat-card {
  background: var(--color-surface-muted);
  border-radius: var(--radius-control);
  padding: 18px;
}

.stat-card__value {
  font-family: var(--font-display);
  font-size: 2em;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.stat-card__label { color: var(--color-ink-soft); }

.scenario-summary-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }

.scenario-summary-list li {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--color-border);
}

.dot {
  width: 0.9em;
  height: 0.9em;
  border-radius: 50%;
  flex-shrink: 0;
}
.dot--correct { background: var(--color-safe); }
.dot--incorrect { background: var(--color-danger); }

/* ---------------- Utility ---------------- */

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

.stack { display: grid; gap: 10px; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* Reflow y controles comunes en todas las páginas existentes. */
[hidden] { display: none !important; }
img, svg, video { max-width: 100%; }
button, input, select, textarea { font: inherit; }
h1, h2, h3, p, a, li, dt, dd { overflow-wrap: anywhere; }
.app-header :focus-visible { outline-color: var(--color-on-primary); }
.app-header__inner > *, .card, .app-container, .admin-container { min-width: 0; }
.brand { min-width: 0; }
.brand__name { font-size: 1.1em; }
.text-size-control { flex-wrap: wrap; max-width: 100%; }
.text-size-control__label { font-size: 0.9em; }
.text-size-btn { font-size: 0.95em; }
.app-footer { font-size: var(--step-sm); }
@media (max-width: 520px) {
 .app-header { padding: var(--space-3); }
 .app-main { padding: var(--space-4) var(--space-3) var(--space-6); }
 .card { padding: var(--space-4); }
 h1 { font-size: 1.55em; }
 .text-size-control { width: 100%; }
 .brand__name { font-size: 1em; }
}

.choice-group { min-width: 0; margin: 0; padding: 0; border: 0; }
.stat-card__value { overflow-wrap: anywhere; }