/* ==========================================================================
   COMPONENTES REUTILIZABLES
   Botones, tarjetas, formularios, badges y bloques compartidos entre pantallas.
   ========================================================================== */

/* --------------------------------------------------------------------------
   BOTONES
   Base: .btn — Variantes: .btn--primary .btn--secondary .btn--outline
                          .btn--ghost .btn--whatsapp
   Tamaños: .btn--sm .btn--lg   Modificadores: .btn--block .btn--pill
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--text-sm);
  line-height: 1.2;
  text-align: center;
  white-space: nowrap;
  transition: background-color var(--duration-fast) var(--ease),
              color var(--duration-fast) var(--ease),
              border-color var(--duration-fast) var(--ease),
              transform var(--duration-fast) var(--ease),
              box-shadow var(--duration-fast) var(--ease);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn--display { font-family: var(--font-display); }
.btn--block   { width: 100%; }
.btn--pill    { border-radius: var(--radius-full); }
.btn--sm      { padding: var(--space-2) var(--space-4); font-size: var(--text-xs); }
.btn--lg      { padding: var(--space-4) var(--space-8); font-size: var(--text-lg); }

.btn--primary {
  background-color: var(--color-primary);
  color: #fff;
}
.btn--primary:hover {
  background-color: var(--color-primary-container);
}

.btn--secondary {
  background-color: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
  box-shadow: var(--shadow-md);
}
.btn--secondary:hover {
  background-color: var(--color-secondary-hover);
}

/* Variante amarilla con texto azul (usada en CTAs sobre fondo oscuro). */
.btn--accent {
  background-color: var(--color-secondary-container);
  color: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.btn--accent:hover {
  background-color: var(--color-secondary-hover);
}

.btn--outline {
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}
.btn--outline:hover {
  background-color: var(--alpha-primary-soft);
}

.btn--outline-light {
  border: 2px solid var(--alpha-white-20);
  color: #fff;
}
.btn--outline-light:hover {
  background-color: var(--alpha-white-10);
}

.btn--ghost {
  border: 1px solid var(--color-outline-variant);
  color: var(--color-on-surface-variant);
}
.btn--ghost:hover {
  background-color: var(--color-surface-container);
}

.btn--danger-soft {
  background-color: rgba(179, 38, 30, 0.1);
  color: var(--color-error);
}
.btn--danger-soft:hover {
  background-color: rgba(179, 38, 30, 0.2);
}

.btn--whatsapp {
  background-color: var(--color-success);
  color: #fff;
  box-shadow: var(--shadow-xl);
}
.btn--whatsapp:hover {
  transform: scale(1.05);
}

.btn--float {
  box-shadow: var(--shadow-2xl);
}
.btn--float:hover {
  transform: scale(1.05);
}

/* --------------------------------------------------------------------------
   BADGES / PÍLDORAS
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge--accent {
  background-color: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
  padding: 0.375rem var(--space-4);
  box-shadow: var(--shadow-sm);
}

.badge--soft {
  background-color: var(--alpha-primary-10);
  color: var(--color-primary);
  text-transform: none;
  letter-spacing: normal;
}

.badge--success {
  background-color: #f0fdf4;
  color: #15803d;
  border: 1px solid #bbf7d0;
}

.badge--category {
  background-color: var(--color-surface-container-lowest);
  border: 1px solid var(--alpha-outline);
  color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   TARJETAS
   -------------------------------------------------------------------------- */
.card {
  background-color: var(--color-surface-container-lowest);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.card--soft {
  background-color: var(--color-surface-container);
  border-color: var(--alpha-outline);
}

.card--muted {
  background-color: var(--color-surface-muted);
}

.card--lift {
  transition: transform var(--duration) var(--ease),
              box-shadow var(--duration) var(--ease);
}
.card--lift:hover {
  transform: translateY(-0.5rem);
  box-shadow: var(--shadow-2xl);
}

.card__media {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 14rem;
  padding: var(--space-6);
  background-color: var(--color-surface-muted);
  border-bottom: 1px solid var(--alpha-outline);
  overflow: hidden;
}

.card__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;
  transition: transform var(--duration-slow) var(--ease);
}

.card--lift:hover .card__media img {
  transform: scale(1.1);
}

.card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--space-6);
}

.card__title {
  margin-bottom: var(--space-3);
  color: var(--color-primary);
  font-size: var(--text-xl);
  line-height: 1.25;
}

.card__text {
  margin-bottom: var(--space-5);
  color: var(--color-on-surface-variant);
  font-size: var(--text-sm);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   LISTA DE CARACTERÍSTICAS (ítems con tilde verde)
   -------------------------------------------------------------------------- */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  color: var(--color-on-surface-variant);
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1.4;
}

.feature-list .icon {
  margin-top: 0.125rem;
  color: var(--color-success);
}

/* --------------------------------------------------------------------------
   FORMULARIOS
   -------------------------------------------------------------------------- */
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.field__label {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-on-surface-variant);
}

.input,
.select,
.textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-surface-container-lowest);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  transition: border-color var(--duration-fast) var(--ease),
              box-shadow var(--duration-fast) var(--ease);
}

.input:focus,
.select:focus,
.textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary);
}

.textarea {
  resize: none;
}

.input::placeholder,
.textarea::placeholder {
  color: var(--color-on-surface-variant);
  opacity: 0.7;
}

/* Buscador con ícono a la izquierda. */
.search {
  position: relative;
  width: 100%;
}

.search .icon {
  position: absolute;
  top: 50%;
  left: var(--space-4);
  transform: translateY(-50%);
  color: var(--color-on-surface-variant);
  pointer-events: none;
}

.search .input {
  padding-left: var(--space-12);
}

.search .input:focus {
  border-color: var(--color-secondary-container);
  box-shadow: 0 0 0 2px var(--color-secondary-container);
}

/* Slider de rango (calculadora ROI). */
.range {
  width: 100%;
  height: 0.375rem;
  appearance: none;
  background-color: var(--color-surface-container);
  border-radius: var(--radius-full);
  cursor: pointer;
}

.range::-webkit-slider-thumb {
  appearance: none;
  width: 1.125rem;
  height: 1.125rem;
  background-color: var(--color-primary);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
}

.range::-moz-range-thumb {
  width: 1.125rem;
  height: 1.125rem;
  background-color: var(--color-primary);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
}

/* --------------------------------------------------------------------------
   ENCABEZADO DE PANTALLA (título + bajada centrados)
   -------------------------------------------------------------------------- */
.page-head {
  margin-bottom: var(--space-10);
  text-align: center;
}

.page-head__title {
  margin-bottom: var(--space-4);
  color: var(--color-primary);
  font-size: var(--text-3xl);
  line-height: 1.15;
}

.page-head__text {
  max-width: 42rem;
  margin-inline: auto;
  color: var(--color-on-surface-variant);
  font-size: var(--text-base);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   ESTADO VACÍO
   -------------------------------------------------------------------------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-block: var(--space-20);
  text-align: center;
}

.empty-state__title {
  margin-bottom: var(--space-2);
  color: var(--color-primary);
  font-size: var(--text-2xl);
}

.empty-state__text {
  color: var(--color-on-surface-variant);
}

/* --------------------------------------------------------------------------
   MINIATURA DE PRODUCTO (usada en carrito, planificador y recomendador)
   -------------------------------------------------------------------------- */
.thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 5rem;
  height: 5rem;
  padding: var(--space-2);
  background-color: #fff;
  border: 1px solid var(--alpha-outline);
  border-radius: var(--radius-md);
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;
}

.thumb--sm {
  width: 4rem;
  height: 4rem;
}

/* --------------------------------------------------------------------------
   CONTROL +/- (cantidad y días)
   -------------------------------------------------------------------------- */
.stepper {
  display: flex;
  align-items: center;
  height: 1.75rem;
  background-color: var(--color-surface-container-lowest);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.stepper__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding-inline: var(--space-2);
  color: var(--color-primary);
  transition: background-color var(--duration-fast) var(--ease);
}

.stepper__btn:hover {
  background-color: var(--color-surface-variant);
}

.stepper__value {
  width: 1.5rem;
  color: var(--color-primary);
  font-weight: 700;
  font-size: var(--text-xs);
  text-align: center;
}

.stepper__label {
  color: var(--color-on-surface-variant);
  font-size: var(--text-2xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --------------------------------------------------------------------------
   RESPONSIVE
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
  .btn    { font-size: var(--text-base); }
  .btn--sm { font-size: var(--text-sm); }

  .card__media  { height: 16rem; padding: var(--space-8); }
  .card__body   { padding: var(--space-8); }
  .card__title  { font-size: var(--text-2xl); }

  .page-head        { margin-bottom: var(--space-12); }
  .page-head__title { font-size: var(--text-5xl); }
  .page-head__text  { font-size: var(--text-lg); }

  .input, .select, .textarea { padding-block: 0.875rem; }
}