/* Cuestionario de Campo - Tren Maya Contigo
   Demostración web de la versión final del instrumento */

:root {
  --color-primary: #1a365d;
  --color-secondary: #2c5282;
  --color-accent: #4a5568;
  --color-light: #f8f8f8;
  --color-border: #b4b4b4;
  --color-soft: #e2e8f0;
  --color-success: #15803d;
  --color-success-bg: #f0fdf4;
  --color-warning: #a16207;
  --color-warning-bg: #fefce8;
  --color-info: #1d4ed8;
  --color-info-bg: #eff6ff;
  --color-pink: #be185d;
  --color-pink-bg: #fdf2f8;
  --color-danger: #dc2626;
  --color-danger-bg: #fee2e2;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --radius: 6px;
  --radius-lg: 10px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  color: #1f2937;
  background: linear-gradient(180deg, #f1f5f9 0%, #e2e8f0 100%);
  min-height: 100vh;
}

/* ============================================================
   BANNER (mimics the institutional letterhead)
   ============================================================ */

.banner-top {
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: white;
  padding: 18px 32px;
  text-align: center;
  letter-spacing: 0.02em;
  border-bottom: 4px solid #95a6da;
}

.banner-top .institution {
  font-size: 13px;
  text-transform: uppercase;
  opacity: 0.9;
  letter-spacing: 0.15em;
}

.banner-top .title {
  font-size: 22px;
  font-weight: 700;
  margin-top: 4px;
}

.demo-badge {
  background: #fef3c7;
  border-bottom: 1px solid #d97706;
  color: #92400e;
  font-size: 13px;
  text-align: center;
  padding: 8px 16px;
}

.demo-badge strong {
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-right: 6px;
}

/* ============================================================
   LAYOUT
   ============================================================ */

main {
  max-width: 980px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}

header.intro {
  background: white;
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-bottom: 32px;
  box-shadow: var(--shadow);
  border-top: 5px solid var(--color-primary);
}

header.intro h1 {
  margin: 0 0 6px;
  color: var(--color-primary);
  font-size: 28px;
  letter-spacing: -0.01em;
}

header.intro .subtitle {
  color: var(--color-accent);
  font-size: 15px;
  margin: 0 0 18px;
}

.ficha-tecnica {
  background: var(--color-soft);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-top: 16px;
  font-size: 14px;
}

.ficha-tecnica .grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 24px;
}

.ficha-tecnica .center-line {
  text-align: center;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid rgba(26, 54, 93, 0.2);
  color: var(--color-accent);
}

.ficha-tecnica strong {
  color: var(--color-primary);
}

/* Instrucciones grid */
.instrucciones-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.instrucciones-card {
  border-radius: var(--radius);
  padding: 14px 18px;
  font-size: 14px;
  border: 1px solid;
}

.instrucciones-card h3 {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 700;
}

.instrucciones-card.green {
  background: var(--color-success-bg);
  border-color: #22c55e;
}
.instrucciones-card.green h3 {
  color: var(--color-success);
}
.instrucciones-card.blue {
  background: var(--color-info-bg);
  border-color: #3b82f6;
}
.instrucciones-card.blue h3 {
  color: var(--color-info);
}
.instrucciones-card.yellow {
  background: var(--color-warning-bg);
  border-color: #eab308;
}
.instrucciones-card.yellow h3 {
  color: var(--color-warning);
}
.instrucciones-card.pink {
  background: var(--color-pink-bg);
  border-color: #ec4899;
}
.instrucciones-card.pink h3 {
  color: var(--color-pink);
}

.instrucciones-card ol,
.instrucciones-card ul {
  margin: 0;
  padding-left: 20px;
}
.instrucciones-card li {
  margin: 4px 0;
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */

section.seccion {
  background: white;
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
  border-left: 5px solid var(--color-primary);
}

section.seccion > h2 {
  margin: 0 0 4px;
  color: var(--color-primary);
  font-size: 22px;
  border-bottom: 2px solid var(--color-soft);
  padding-bottom: 10px;
}

section.seccion > .seccion-intro {
  color: var(--color-accent);
  font-style: italic;
  margin: 12px 0 20px;
}

/* ============================================================
   QUESTION BLOCK
   ============================================================ */

.pregunta {
  margin: 24px 0;
  padding: 18px 20px;
  background: #fafbfc;
  border-radius: var(--radius);
  border: 1px solid #e5e7eb;
}

.pregunta.hidden {
  display: none;
}

.pregunta .pregunta-numero {
  display: inline-block;
  background: var(--color-primary);
  color: white;
  font-weight: 700;
  font-size: 13px;
  padding: 3px 10px;
  border-radius: 4px;
  margin-right: 8px;
  letter-spacing: 0.05em;
}

.pregunta .pregunta-titulo {
  display: inline;
  font-weight: 700;
  color: var(--color-primary);
  font-size: 16px;
}

.pregunta .pregunta-instruccion-meta {
  display: block;
  font-size: 12px;
  color: var(--color-accent);
  font-style: italic;
  margin-top: 4px;
  margin-bottom: 10px;
}

.leer {
  background: #eff6ff;
  border-left: 3px solid #3b82f6;
  padding: 10px 14px;
  margin: 10px 0;
  border-radius: 4px;
  font-size: 14px;
}

.leer::before {
  content: "LEER: ";
  font-weight: 700;
  color: #1d4ed8;
  letter-spacing: 0.05em;
}

.nota {
  background: #fef3c7;
  border-left: 3px solid #d97706;
  color: #92400e;
  padding: 8px 12px;
  margin: 10px 0;
  font-size: 13px;
  border-radius: 4px;
}

.instruccion-campo {
  font-style: italic;
  font-size: 13px;
  color: var(--color-accent);
  margin: 8px 0;
}

/* ============================================================
   FORM CONTROLS
   ============================================================ */

label.opcion {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 9px 12px;
  margin: 4px 0;
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.15s ease;
  font-size: 14.5px;
}

label.opcion:hover {
  border-color: var(--color-secondary);
  background: #f0f6fc;
}

label.opcion input[type="radio"],
label.opcion input[type="checkbox"] {
  margin-top: 3px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

label.opcion .codigo {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 12px;
  color: var(--color-accent);
  background: var(--color-soft);
  padding: 1px 6px;
  border-radius: 3px;
  margin-right: 4px;
  min-width: 24px;
  text-align: center;
}

label.opcion:has(input:checked) {
  border-color: var(--color-primary);
  background: #e6f0fa;
  font-weight: 500;
}

input[type="text"],
input[type="number"],
input[type="time"],
input[type="date"],
textarea,
select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid #cbd5e0;
  border-radius: 5px;
  font-family: inherit;
  font-size: 14.5px;
  background: white;
  transition: border-color 0.15s ease;
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="time"]:focus,
input[type="date"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

textarea {
  min-height: 70px;
  resize: vertical;
}

.field-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px 20px;
  margin: 10px 0;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
}

/* ============================================================
   MATRIX TABLES (Likert / multi-row)
   ============================================================ */

.matriz {
  overflow-x: auto;
  margin: 12px 0;
  border-radius: var(--radius);
  border: 1px solid #e5e7eb;
}

.matriz table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: white;
}

.matriz th {
  background: var(--color-primary);
  color: white;
  font-weight: 600;
  padding: 10px 8px;
  text-align: center;
  font-size: 13px;
  letter-spacing: 0.02em;
}

.matriz th:first-child {
  text-align: left;
  padding-left: 14px;
}

.matriz td {
  padding: 10px 8px;
  text-align: center;
  border-bottom: 1px solid #f1f5f9;
}

.matriz td:first-child {
  text-align: left;
  padding-left: 14px;
  width: 40%;
}

.matriz tr:nth-child(even) td {
  background: #f8fafc;
}

.matriz tr:hover td {
  background: #eef4fa;
}

.matriz input[type="radio"] {
  accent-color: var(--color-primary);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.matriz .bloque-titulo {
  background: var(--color-soft);
  font-weight: 700;
  color: var(--color-secondary);
  padding: 10px 14px;
  font-size: 14px;
  border-bottom: 2px solid var(--color-primary);
}

/* ============================================================
   ESCALA VISUAL (NPS / 1-10)
   ============================================================ */

.escala {
  background: var(--color-soft);
  border: 1px solid var(--color-primary);
  border-radius: 8px;
  padding: 16px 20px;
  margin: 14px 0;
}

.escala-labels {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 10px;
}

.escala-opciones {
  display: grid;
  gap: 8px;
}

.escala-opciones.cols-10 {
  grid-template-columns: repeat(10, 1fr);
}

.escala-opciones.cols-11 {
  grid-template-columns: repeat(11, 1fr);
}

.escala-num {
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border: 1.5px solid var(--color-secondary);
  border-radius: 50%;
  aspect-ratio: 1;
  font-weight: 700;
  font-size: 14px;
  color: var(--color-primary);
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.escala-num:hover {
  background: #e6f0fa;
  transform: scale(1.05);
}

.escala input[type="radio"] {
  display: none;
}

.escala input[type="radio"]:checked + .escala-num {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
  transform: scale(1.1);
}

.escala-extra {
  text-align: center;
  margin-top: 10px;
  font-size: 13px;
  color: var(--color-accent);
}

.escala-extra label.opcion {
  display: inline-flex;
  background: white;
}

/* ============================================================
   AMAI / NSE BLOCKS
   ============================================================ */

.amai-block {
  border: 1px solid #e5e7eb;
  border-radius: var(--radius);
  padding: 14px 16px;
  margin: 12px 0;
  background: white;
}

.amai-result {
  background: var(--color-success-bg);
  border: 2px solid #22c55e;
  border-radius: var(--radius);
  padding: 14px 18px;
  margin: 16px 0;
  text-align: center;
}

.amai-result .puntaje {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-success);
  margin: 4px 0;
}

.amai-result .nivel {
  font-size: 18px;
  color: var(--color-primary);
  font-weight: 600;
}

/* ============================================================
   SUBMIT / FOOTER
   ============================================================ */

.actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
}

button {
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 36px;
  border-radius: var(--radius);
  cursor: pointer;
  border: none;
  transition: all 0.15s ease;
}

button.primary {
  background: var(--color-primary);
  color: white;
  box-shadow: var(--shadow);
}

button.primary:hover {
  background: var(--color-secondary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

button.secondary {
  background: white;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

button.secondary:hover {
  background: var(--color-soft);
}

footer.cierre {
  background: var(--color-success-bg);
  border: 2px solid #22c55e;
  border-radius: var(--radius-lg);
  padding: 24px 32px;
  margin-top: 24px;
  text-align: center;
}

footer.cierre h3 {
  margin: 0 0 10px;
  color: var(--color-success);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 14px;
}

footer.cierre p {
  margin: 0;
  font-style: italic;
  color: #1f2937;
  font-size: 15px;
}

.legal-note {
  text-align: center;
  color: var(--color-accent);
  font-size: 12px;
  padding: 24px 16px 0;
  margin-top: 24px;
  border-top: 1px solid var(--color-border);
}

/* ============================================================
   PROGRESS / STICKY NAV
   ============================================================ */

.progress-bar {
  position: sticky;
  top: 0;
  background: white;
  z-index: 100;
  padding: 10px 16px;
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  font-size: 13px;
}

.progress-bar .bar-bg {
  background: var(--color-soft);
  height: 6px;
  border-radius: 3px;
  overflow: hidden;
  margin-top: 6px;
}

.progress-bar .bar-fill {
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  height: 100%;
  width: 0;
  transition: width 0.4s ease;
}

.progress-bar .label {
  color: var(--color-accent);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.progress-bar .label strong {
  color: var(--color-primary);
}

/* ============================================================
   MODAL
   ============================================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: white;
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 100%;
  padding: 32px;
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.modal h3 {
  margin: 0 0 12px;
  color: var(--color-success);
}

.modal p {
  color: #1f2937;
  margin: 0 0 20px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 768px) {
  main {
    padding: 16px 12px 60px;
  }
  section.seccion {
    padding: 20px 18px;
  }
  header.intro {
    padding: 20px 18px;
  }
  .instrucciones-grid {
    grid-template-columns: 1fr;
  }
  .ficha-tecnica .grid {
    grid-template-columns: 1fr;
  }
  .escala-num {
    font-size: 12px;
  }
  .matriz {
    font-size: 12px;
  }
  .matriz td:first-child {
    width: 50%;
  }
}

@media print {
  body {
    background: white;
  }
  .progress-bar,
  .actions,
  .demo-badge {
    display: none;
  }
  .pregunta.hidden {
    display: block;
  }
  section.seccion {
    box-shadow: none;
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }
}