/* ---------------------------------------------------------------------
   Header / logo
--------------------------------------------------------------------- */
.app-header {
  display: flex;
  justify-content: center;
  padding: var(--space-6) var(--space-4) var(--space-4);
}

.logo {
  height: 22px;
  width: auto;
  display: block;
}

/* ---------------------------------------------------------------------
   Tarjeta contenedora
--------------------------------------------------------------------- */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-6);
  width: 100%;
  max-width: 560px;
}

/* ---------------------------------------------------------------------
   Intro (título + subtítulo persistentes del cuestionario)
--------------------------------------------------------------------- */
.intro {
  text-align: center;
  margin-bottom: var(--space-5);
}

.intro__title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.intro__subtitle {
  margin-top: var(--space-2);
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text-secondary);
}

.result-pdf-note {
  display: inline-block;
  margin-top: var(--space-3);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-primary);
  background: rgba(68, 109, 228, 0.08);
  border-radius: var(--radius-pill);
}

/* ---------------------------------------------------------------------
   Barra de progreso
--------------------------------------------------------------------- */
.progress {
  margin-bottom: var(--space-6);
}

.progress-track {
  height: 4px;
  border-radius: var(--radius-pill);
  background: var(--color-track);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-pill);
  transition: width var(--transition-base);
  width: 0%;
}

.progress-label {
  display: block;
  margin-top: var(--space-2);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-tertiary);
  text-align: center;
}

/* ---------------------------------------------------------------------
   Pregunta (parte que cambia con cada paso)
--------------------------------------------------------------------- */
.question-body {
  min-height: 160px;
}

.question-title {
  font-size: 30px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  text-align: center;
  margin-bottom: var(--space-5);
}

.question-input-wrap {
  position: relative;
}

.field {
  width: 100%;
  padding: 14px 16px;
  font-size: 16px;
  color: var(--color-text-primary);
  background: var(--color-bg-page);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast), background var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

.field::placeholder {
  color: var(--color-text-tertiary);
}

.field:focus {
  background: var(--color-white);
  border-color: var(--color-primary);
}

.field--select {
  cursor: pointer;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'></polyline></svg>");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 44px;
}

.field-other-wrap {
  margin-top: var(--space-3);
}

/* ---------------------------------------------------------------------
   Chips (preguntas de selección múltiple)
--------------------------------------------------------------------- */
.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chip {
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-primary);
  background: var(--color-bg-page);
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast),
    border-color var(--transition-fast), transform var(--transition-fast);
}

.chip:hover {
  border-color: var(--color-border-strong);
}

.chip.is-selected {
  background: var(--color-primary);
  color: var(--color-text-on-primary);
}

.chip:active {
  transform: scale(0.97);
}

.field-suffix {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  color: var(--color-text-tertiary);
  pointer-events: none;
}

/* Oculta el stepper nativo de los inputs numéricos: el sufijo (kg/años)
   ocupa ese espacio en su lugar. */
input[type='number'] {
  -moz-appearance: textfield;
  padding-right: 44px;
}

input[type='number']::-webkit-outer-spin-button,
input[type='number']::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* ---------------------------------------------------------------------
   Acciones (botones)
--------------------------------------------------------------------- */
.question-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.btn {
  border: none;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition-fast), opacity var(--transition-fast),
    background var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary {
  flex: 1;
  padding: 15px 20px;
  background: var(--color-primary);
  color: var(--color-text-on-primary);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

.btn-primary:active:not(:disabled) {
  transform: scale(0.98);
}

.btn-primary:disabled {
  background: var(--color-disabled-bg);
  color: var(--color-disabled-text);
  cursor: not-allowed;
}

.btn-primary.is-armed {
  animation: armPulse var(--transition-base) ease;
}

@keyframes armPulse {
  from {
    transform: scale(0.97);
    opacity: 0.6;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.btn-back {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  background: var(--color-bg-page);
  color: var(--color-text-secondary);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

/* ---------------------------------------------------------------------
   Transición fade + slide (250ms) entre preguntas
--------------------------------------------------------------------- */
.fx-enter {
  animation: fxEnter var(--transition-base) both;
}

.fx-exit {
  animation: fxExit var(--transition-base) both;
}

@keyframes fxEnter {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fxExit {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(-24px);
  }
}

.fx-enter.fx-back {
  animation-name: fxEnterBack;
}

.fx-exit.fx-back {
  animation-name: fxExitBack;
}

@keyframes fxEnterBack {
  from {
    opacity: 0;
    transform: translateX(-24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fxExitBack {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(24px);
  }
}

.view-fx-enter {
  animation: viewFxEnter var(--transition-base) both;
}

@keyframes viewFxEnter {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}