/* SISTEMA DE DISEÑO UNIFICADO PARA TODO EL PROYECTO */
/* ================================================================ */

/* VARIABLES GLOBALES */
:root {
  --primary-color: #ff7700;
  --primary-hover: #e66600;
  --primary-light: #ff9500;
  --secondary-color: #28a745;
  --secondary-hover: #218838;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --info-color: #17a2b8;
  --light-color: #f8f9fa;
  --dark-color: #343a40;
  --white: #ffffff;
  --border-color: #dee2e6;
  --shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  --shadow-lg: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
  --border-radius: 0.375rem;
  --border-radius-lg: 0.5rem;
  --border-radius-pill: 50rem;
}

/* RESET Y BASE */
* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
  color: var(--dark-color);
  background-color: var(--light-color);
}

/* CONTENEDORES */
.container {
  width: 100% !important;
  max-width: 1320px !important;
  margin-right: auto !important;
  margin-left: auto !important;
  padding-right: 0.75rem !important;
  padding-left: 0.75rem !important;
}

/* SISTEMA DE BOTONES UNIFICADO */
.btn, button, input[type="submit"], input[type="button"] {
  display: inline-block !important;
  visibility: visible !important;
  opacity: 1 !important;
  font-weight: 600 !important;
  text-align: center !important;
  vertical-align: middle !important;
  cursor: pointer !important;
  border: 2px solid transparent !important;
  padding: 0.5rem 1rem !important;
  font-size: 1rem !important;
  line-height: 1.5 !important;
  border-radius: var(--border-radius) !important;
  text-decoration: none !important;
  transition: all 0.15s ease-in-out !important;
  min-height: 38px !important;
  position: relative !important;
  z-index: 100 !important;
}

/* BOTONES PRIMARIOS */
.btn-primary, .btn-primary:link, .btn-primary:visited {
  background-color: var(--primary-color) !important;
  border-color: var(--primary-color) !important;
  color: var(--white) !important;
}

.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
  background-color: var(--primary-hover) !important;
  border-color: var(--primary-hover) !important;
  color: var(--white) !important;
  transform: translateY(-1px) !important;
  box-shadow: 0 4px 12px rgba(255, 119, 0, 0.3) !important;
}

/* BOTONES SECUNDARIOS */
.btn-secondary {
  background-color: var(--secondary-color) !important;
  border-color: var(--secondary-color) !important;
  color: var(--white) !important;
}

.btn-secondary:hover, .btn-secondary:focus, .btn-secondary:active {
  background-color: var(--secondary-hover) !important;
  border-color: var(--secondary-hover) !important;
  color: var(--white) !important;
}

/* BOTONES SUCCESS */
.btn-success {
  background-color: var(--secondary-color) !important;
  border-color: var(--secondary-color) !important;
  color: var(--white) !important;
}

.btn-success:hover, .btn-success:focus, .btn-success:active {
  background-color: var(--secondary-hover) !important;
  border-color: var(--secondary-hover) !important;
  color: var(--white) !important;
}

/* BOTONES OUTLINE */
.btn-outline-primary {
  color: var(--primary-color) !important;
  border-color: var(--primary-color) !important;
  background-color: transparent !important;
}

.btn-outline-primary:hover, .btn-outline-primary:focus {
  background-color: var(--primary-color) !important;
  border-color: var(--primary-color) !important;
  color: var(--white) !important;
}

/* TAMAÑOS DE BOTONES */
.btn-sm {
  padding: 0.25rem 0.5rem !important;
  font-size: 0.875rem !important;
  border-radius: calc(var(--border-radius) * 0.75) !important;
  min-height: 32px !important;
}

.btn-lg {
  padding: 0.75rem 1.5rem !important;
  font-size: 1.25rem !important;
  border-radius: var(--border-radius-lg) !important;
  min-height: 48px !important;
}

/* FORMAS DE BOTONES */
.btn-pill, .rounded-pill {
  border-radius: var(--border-radius-pill) !important;
}

/* SISTEMA DE TARJETAS */
.card {
  background-color: var(--white) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--border-radius-lg) !important;
  box-shadow: var(--shadow-lg) !important;
}

.card-header {
  padding: 1rem 1.25rem !important;
  background-color: var(--primary-color) !important;
  color: var(--white) !important;
  border-bottom: 1px solid var(--border-color) !important;
  border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0 !important;
}

.card-body {
  padding: 1.5rem !important;
}

.card-footer {
  padding: 0.75rem 1.25rem !important;
  background-color: var(--light-color) !important;
  border-top: 1px solid var(--border-color) !important;
  border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg) !important;
}

/* SISTEMA DE FORMULARIOS */
.form-control {
  display: block !important;
  width: 100% !important;
  padding: 0.5rem 0.75rem !important;
  font-size: 1rem !important;
  font-weight: 400 !important;
  line-height: 1.5 !important;
  color: var(--dark-color) !important;
  background-color: var(--white) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--border-radius) !important;
  transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out !important;
}

.form-control:focus {
  border-color: var(--primary-color) !important;
  outline: 0 !important;
  box-shadow: 0 0 0 0.2rem rgba(255, 119, 0, 0.25) !important;
}

.form-control-lg {
  min-height: 48px !important;
  padding: 0.75rem 1rem !important;
  font-size: 1.25rem !important;
}

.form-label {
  margin-bottom: 0.5rem !important;
  font-weight: 600 !important;
  color: var(--dark-color) !important;
}

/* ALERTAS */
.alert {
  position: relative !important;
  padding: 0.75rem 1.25rem !important;
  margin-bottom: 1rem !important;
  border: 1px solid transparent !important;
  border-radius: var(--border-radius) !important;
}

.alert-primary {
  color: #cc5500 !important;
  background-color: #fff3e6 !important;
  border-color: #ffddcc !important;
}

.alert-success {
  color: #0f5132 !important;
  background-color: #d1e7dd !important;
  border-color: #a3cfbb !important;
}

.alert-danger {
  color: #721c24 !important;
  background-color: #f8d7da !important;
  border-color: #f1aeb5 !important;
}

.alert-warning {
  color: #856404 !important;
  background-color: #fff3cd !important;
  border-color: #ffeaa7 !important;
}

/* NAVEGACIÓN */
.navbar {
  background-color: var(--primary-color) !important;
  padding: 0.5rem 1rem !important;
}

.navbar-brand {
  color: var(--white) !important;
  font-weight: 700 !important;
  font-size: 1.25rem !important;
}

.navbar-brand:hover, .navbar-brand:focus {
  color: var(--white) !important;
}

.nav-link {
  color: rgba(255, 255, 255, 0.8) !important;
  font-weight: 500 !important;
}

.nav-link:hover, .nav-link:focus {
  color: var(--white) !important;
}

/* TABLAS */
.table {
  width: 100% !important;
  margin-bottom: 1rem !important;
  color: var(--dark-color) !important;
  background-color: var(--white) !important;
}

.table th,
.table td {
  padding: 0.75rem !important;
  vertical-align: top !important;
  border-top: 1px solid var(--border-color) !important;
}

.table thead th {
  vertical-align: bottom !important;
  border-bottom: 2px solid var(--border-color) !important;
  background-color: var(--light-color) !important;
  font-weight: 600 !important;
}

/* UTILIDADES DE ESPACIADO */
.py-1 { padding-top: 0.25rem !important; padding-bottom: 0.25rem !important; }
.py-2 { padding-top: 0.5rem !important; padding-bottom: 0.5rem !important; }
.py-3 { padding-top: 1rem !important; padding-bottom: 1rem !important; }
.py-4 { padding-top: 1.5rem !important; padding-bottom: 1.5rem !important; }
.py-5 { padding-top: 3rem !important; padding-bottom: 3rem !important; }

.px-1 { padding-left: 0.25rem !important; padding-right: 0.25rem !important; }
.px-2 { padding-left: 0.5rem !important; padding-right: 0.5rem !important; }
.px-3 { padding-left: 1rem !important; padding-right: 1rem !important; }
.px-4 { padding-left: 1.5rem !important; padding-right: 1.5rem !important; }
.px-5 { padding-left: 3rem !important; padding-right: 3rem !important; }

.mb-1 { margin-bottom: 0.25rem !important; }
.mb-2 { margin-bottom: 0.5rem !important; }
.mb-3 { margin-bottom: 1rem !important; }
.mb-4 { margin-bottom: 1.5rem !important; }
.mb-5 { margin-bottom: 3rem !important; }

.mt-1 { margin-top: 0.25rem !important; }
.mt-2 { margin-top: 0.5rem !important; }
.mt-3 { margin-top: 1rem !important; }
.mt-4 { margin-top: 1.5rem !important; }
.mt-5 { margin-top: 3rem !important; }

/* UTILIDADES DE DISPLAY */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-inline { display: inline !important; }
.d-inline-block { display: inline-block !important; }
.d-flex { display: flex !important; }
.d-grid { display: grid !important; }

/* UTILIDADES DE FLEXBOX */
.justify-content-start { justify-content: flex-start !important; }
.justify-content-end { justify-content: flex-end !important; }
.justify-content-center { justify-content: center !important; }
.justify-content-between { justify-content: space-between !important; }
.justify-content-around { justify-content: space-around !important; }

.align-items-start { align-items: flex-start !important; }
.align-items-end { align-items: flex-end !important; }
.align-items-center { align-items: center !important; }
.align-items-baseline { align-items: baseline !important; }
.align-items-stretch { align-items: stretch !important; }

.flex-column { flex-direction: column !important; }
.flex-row { flex-direction: row !important; }

/* UTILIDADES DE GRID */
.gap-1 { gap: 0.25rem !important; }
.gap-2 { gap: 0.5rem !important; }
.gap-3 { gap: 1rem !important; }
.gap-4 { gap: 1.5rem !important; }
.gap-5 { gap: 3rem !important; }

/* UTILIDADES DE TEXTO */
.text-left { text-align: left !important; }
.text-center { text-align: center !important; }
.text-right { text-align: right !important; }

.text-primary { color: var(--primary-color) !important; }
.text-secondary { color: var(--secondary-color) !important; }
.text-success { color: var(--secondary-color) !important; }
.text-danger { color: var(--danger-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-info { color: var(--info-color) !important; }
.text-light { color: var(--light-color) !important; }
.text-dark { color: var(--dark-color) !important; }
.text-white { color: var(--white) !important; }
.text-muted { color: #6c757d !important; }

.fw-light { font-weight: 300 !important; }
.fw-normal { font-weight: 400 !important; }
.fw-semibold { font-weight: 600 !important; }
.fw-bold { font-weight: 700 !important; }
.fw-bolder { font-weight: 900 !important; }

.fs-1 { font-size: 2.5rem !important; }
.fs-2 { font-size: 2rem !important; }
.fs-3 { font-size: 1.75rem !important; }
.fs-4 { font-size: 1.5rem !important; }
.fs-5 { font-size: 1.25rem !important; }
.fs-6 { font-size: 1rem !important; }

/* UTILIDADES DE BORDE */
.border { border: 1px solid var(--border-color) !important; }
.border-0 { border: 0 !important; }
.border-top { border-top: 1px solid var(--border-color) !important; }
.border-bottom { border-bottom: 1px solid var(--border-color) !important; }

.rounded { border-radius: var(--border-radius) !important; }
.rounded-0 { border-radius: 0 !important; }
.rounded-1 { border-radius: 0.2rem !important; }
.rounded-2 { border-radius: var(--border-radius) !important; }
.rounded-3 { border-radius: var(--border-radius-lg) !important; }
.rounded-pill { border-radius: var(--border-radius-pill) !important; }

/* SOMBRAS */
.shadow-sm { box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075) !important; }
.shadow { box-shadow: var(--shadow) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }

/* COMPONENTES ESPECÍFICOS DEL PROYECTO */

/* Cabeceras heroicas */
.hero-header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%) !important;
  color: var(--white) !important;
  padding: 1.5rem !important;
  border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0 !important;
}

.hero-title {
  font-size: 1.25rem !important;
  font-weight: 700 !important;
  margin-bottom: 0 !important;
  color: var(--white) !important;
}

.hero-sub {
  opacity: 0.8 !important;
  font-size: 0.875rem !important;
  color: var(--white) !important;
}

.hero-icon {
  width: 50px !important;
  height: 50px !important;
  background-color: rgba(255, 255, 255, 0.25) !important;
  border-radius: 50% !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}

/* Contenedores de páginas públicas */
.public-card-wrapper {
  max-width: 500px !important;
  margin: 0 auto !important;
}

/* Exámenes */
.exam-hero {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%) !important;
  color: var(--white) !important;
  padding: 20px !important;
  border-radius: var(--border-radius-lg) !important;
}

.q-item {
  background: var(--white) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--border-radius) !important;
  padding: 1rem !important;
  margin-bottom: 1rem !important;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .container {
    padding-right: 1rem !important;
    padding-left: 1rem !important;
  }
  
  .btn-lg {
    padding: 0.5rem 1rem !important;
    font-size: 1.1rem !important;
  }
  
  .card-body {
    padding: 1rem !important;
  }
}

/* FIXES ESPECÍFICOS */
/* Asegurar que todos los elementos críticos sean visibles */
button[type="submit"], input[type="submit"], .btn-submit {
  background-color: var(--primary-color) !important;
  color: var(--white) !important;
  border-color: var(--primary-color) !important;
}

/* IDs específicos problemáticos */
#btn-enviar-examen {
  background-color: var(--secondary-color) !important;
  border-color: var(--secondary-color) !important;
  color: var(--white) !important;
  box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3) !important;
}

#btn-start-exam {
  background-color: var(--primary-color) !important;
  border-color: var(--primary-color) !important;
  color: var(--white) !important;
  box-shadow: 0 4px 12px rgba(255, 119, 0, 0.3) !important;
}

/* FORZAR VISIBILIDAD ABSOLUTA */
.btn, button, input[type="submit"] {
  display: inline-block !important;
  visibility: visible !important;
  opacity: 1 !important;
  position: relative !important;
  z-index: 100 !important;
}