/* ==========================================================================
   LAYOUT — estructura general, navbar, footer, drawer y FAB
   ========================================================================== */

.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app__body {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  position: relative;
}

.app__main {
  flex-grow: 1;
  width: 100%;
  transition: padding-right var(--duration) var(--ease);
}

/* --------------------------------------------------------------------------
   NAVBAR
   -------------------------------------------------------------------------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  background-color: var(--color-surface-container-lowest);
  border-bottom: 1px solid rgba(23, 45, 74, 0.1);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--navbar-height);
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.navbar__brand {
  display: flex;
  align-items: center;
  cursor: pointer;
}

.navbar__logo {
  height: 2.5rem;
  object-fit: contain;
}

.navbar__links {
  display: none;
  align-items: center;
  gap: var(--space-8);
}

.navbar__link {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
  color: var(--color-on-surface-variant);
  transition: color var(--duration-fast) var(--ease);
}

.navbar__link:hover {
  color: var(--color-primary);
}

.navbar__link.is-active {
  padding-bottom: var(--space-1);
  border-bottom: 2px solid var(--color-secondary-container);
  color: var(--color-primary);
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.navbar__cart-count {
  padding: 0.125rem var(--space-2);
  background-color: var(--color-secondary-container);
  border-radius: var(--radius-full);
  color: var(--color-on-secondary-container);
  font-size: var(--text-xs);
}

.navbar__cart-label {
  display: none;
}

.navbar__burger {
  padding: var(--space-1);
  color: var(--color-primary);
}

/* Menú desplegable en mobile */
.navbar__mobile {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  position: absolute;
  top: var(--navbar-height);
  left: 0;
  width: 100%;
  padding: var(--space-4);
  background-color: var(--color-surface-container-lowest);
  border-bottom: 1px solid rgba(23, 45, 74, 0.1);
  box-shadow: var(--shadow-xl);
}

.navbar__mobile-link {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--text-lg);
  text-align: left;
  color: var(--color-on-surface-variant);
  transition: background-color var(--duration-fast) var(--ease);
}

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

.navbar__mobile-link.is-active {
  background-color: var(--alpha-primary-10);
  color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   FOOTER
   -------------------------------------------------------------------------- */
.footer {
  width: 100%;
  margin-top: var(--space-20);
  background-color: var(--color-tertiary);
  color: var(--color-on-tertiary);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-16) var(--space-6);
}

.footer__col {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer__brand {
  display: flex;
  align-items: center;
  width: fit-content;
}

.footer__logo {
  height: 2.5rem;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

.footer__text {
  max-width: 24rem;
  margin-top: var(--space-2);
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
}

.footer__heading {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-secondary-container);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--duration-fast) var(--ease);
}

.footer__link:hover {
  color: var(--color-secondary-container);
}

.footer__link.is-highlighted {
  color: var(--color-secondary-container);
  font-weight: 700;
}

.footer__contact {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  color: rgba(255, 255, 255, 0.8);
}

.footer__social {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.footer__social button {
  color: var(--color-on-tertiary);
  transition: color var(--duration-fast) var(--ease);
}

.footer__social button:hover {
  color: var(--color-secondary-container);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap; /* Mantiene la flexibilidad si la pantalla es muy angosta */
}

.footer__bottom p {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
}

/* --------------------------------------------------------------------------
   DRAWER DE PRESUPUESTO
   Mobile: hoja inferior. Desktop: barra lateral derecha.
   -------------------------------------------------------------------------- */
.cart-overlay {
  position: fixed;
  inset: 0;
  z-index: 40;
  background-color: var(--alpha-black-50);
}

.cart {
  display: flex;
  flex-direction: column;
  position: fixed;
  z-index: 50;
  right: 0;
  bottom: 0;
  left: 0;
  height: 85vh;
  background-color: var(--color-surface-container-lowest);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  box-shadow: var(--shadow-2xl);
  animation: slide-in-bottom var(--duration) var(--ease);
}

.cart__handle {
  display: flex;
  justify-content: center;
  width: 100%;
  padding-block: var(--space-3);
  cursor: pointer;
}

.cart__handle span {
  width: 3rem;
  height: 0.375rem;
  background-color: var(--alpha-outline-strong);
  border-radius: var(--radius-full);
}

.cart__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  background-color: var(--color-primary);
  border-bottom: 1px solid var(--alpha-outline);
  color: #fff;
}

.cart__title {
  font-size: var(--text-xl);
}

.cart__close {
  display: flex;
  padding: var(--space-2);
  border-radius: var(--radius-full);
  color: inherit;
  transition: background-color var(--duration-fast) var(--ease);
}

.cart__close:hover {
  background-color: var(--alpha-white-10);
}

.cart__scroll {
  flex: 1;
  padding: var(--space-4);
  overflow-y: auto;
}

.cart__sections {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.cart__section-title {
  padding-bottom: var(--space-2);
  margin-bottom: var(--space-4);
  border-bottom: 1px solid var(--alpha-outline);
  color: var(--color-primary);
  font-size: var(--text-lg);
}

.cart__items {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.cart-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4);
  background-color: var(--color-surface-container);
  border: 1px solid var(--alpha-outline);
  border-radius: var(--radius-lg);
}

.cart-item__info {
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: space-between;
  min-width: 0;
}

.cart-item__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2);
}

.cart-item__title {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--text-sm);
  line-height: 1.25;
  color: var(--color-primary);
}

.cart-item__remove {
  padding: var(--space-1);
  color: rgba(179, 38, 30, 0.7);
  transition: color var(--duration-fast) var(--ease);
}

.cart-item__remove:hover {
  color: var(--color-error);
}

.cart-item__controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.cart-item__control {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Bloque de venta cruzada */
.cart-crosssell {
  padding: var(--space-4);
  background-color: var(--color-info-bg);
  border: 1px solid var(--color-info-border);
  border-radius: var(--radius-lg);
}

.cart-crosssell__title {
  margin-bottom: var(--space-3);
  color: var(--color-primary);
  font-size: var(--text-sm);
}

.cart-crosssell__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-3);
  background-color: #fff;
  border: 1px solid var(--alpha-outline);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.cart-crosssell__media {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
  min-width: 0;
}

.cart-crosssell__avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--color-surface-container);
  border-radius: var(--radius-sm);
  color: var(--color-primary);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xs);
}

.cart-crosssell__name {
  font-weight: 700;
  font-size: var(--text-xs);
  line-height: 1.25;
  color: var(--color-primary);
}

.cart-crosssell__desc {
  font-size: var(--text-2xs);
  color: var(--color-on-surface-variant);
}

/* Acciones rápidas: PDF / Compartir / WhatsApp */
.cart-actions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
}

.cart-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-3);
  background-color: var(--color-surface-container);
  border: 1px solid var(--alpha-outline-strong);
  border-radius: var(--radius-md);
  transition: background-color var(--duration-fast) var(--ease);
}

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

.cart-action .icon {
  margin-bottom: var(--space-1);
  color: var(--color-primary);
  transition: transform var(--duration-fast) var(--ease);
}

.cart-action:hover .icon {
  transform: scale(1.1);
}

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

.cart-action--whatsapp {
  background-color: rgba(37, 211, 102, 0.1);
  border-color: rgba(37, 211, 102, 0.3);
}

.cart-action--whatsapp:hover {
  background-color: rgba(37, 211, 102, 0.2);
}

.cart-action--whatsapp .icon,
.cart-action--whatsapp span {
  color: var(--color-whatsapp);
}

/* Formulario de datos */
.cart-form {
  padding: var(--space-5);
  background-color: var(--color-surface-container);
  border: 1px solid var(--alpha-outline-strong);
  border-radius: var(--radius-lg);
}

.cart-form__title {
  margin-bottom: var(--space-4);
  color: var(--color-primary);
  font-size: var(--text-lg);
}

.cart-form form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.cart-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.cart__footer {
  padding: var(--space-4);
  background-color: var(--color-surface-container-lowest);
  border-top: 1px solid var(--alpha-outline);
}

/* Confirmación de envío */
.cart__success {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-block: var(--space-20);
  text-align: center;
  animation: zoom-in var(--duration-slow) var(--ease);
}

.cart__success-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 5rem;
  height: 5rem;
  margin-bottom: var(--space-6);
  background-color: rgba(40, 167, 69, 0.2);
  border-radius: var(--radius-full);
  color: var(--color-success);
}

.cart__success h2 {
  margin-bottom: var(--space-4);
  color: var(--color-primary);
  font-size: var(--text-3xl);
}

.cart__success p {
  max-width: 28rem;
  color: var(--color-on-surface-variant);
  line-height: 1.7;
}

.cart__empty-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 6rem;
  height: 6rem;
  margin-bottom: var(--space-6);
  background-color: rgba(226, 232, 240, 0.5);
  border-radius: var(--radius-full);
  color: rgba(0, 38, 110, 0.3);
}

/* --------------------------------------------------------------------------
   BOTÓN FLOTANTE DE WHATSAPP
   -------------------------------------------------------------------------- */
.fab-whatsapp {
  display: flex;
  align-items: center;
  justify-content: center;
  position: fixed;
  right: var(--space-8);
  bottom: var(--space-8);
  z-index: 100;
  padding: var(--space-4);
  background-color: var(--color-success);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-2xl);
  color: #fff;
  transition: transform var(--duration-fast) var(--ease);
}

.fab-whatsapp:hover {
  transform: scale(1.1);
}

.fab-whatsapp .icon {
  width: 1.75rem;
  height: 1.75rem;
}

.fab-whatsapp span {
  max-width: 0;
  overflow: hidden;
  white-space: nowrap;
  font-weight: 700;
  transition: max-width var(--duration) var(--ease),
              margin-left var(--duration) var(--ease);
}

.fab-whatsapp:hover span {
  max-width: 12rem;
  margin-left: var(--space-3);
}

/* --------------------------------------------------------------------------
   BARRA FLOTANTE INFERIOR (comparar / ver presupuesto)
   -------------------------------------------------------------------------- */
.float-bar {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  position: fixed;
  bottom: var(--space-6);
  left: 50%;
  z-index: 50;
  transform: translateX(-50%);
}

.float-bar:empty {
  display: none;
}

/* --------------------------------------------------------------------------
   RESPONSIVE
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
  .navbar__inner { padding-inline: var(--space-12); }
  .navbar__logo,
  .footer__logo  { height: 3.5rem; }
  .navbar__links { display: flex; }
  .navbar__actions { gap: var(--space-4); }
  .navbar__cart-label { display: inline; }
  .navbar__burger { display: none; }

  .footer__grid { grid-template-columns: repeat(3, 1fr); padding-inline: var(--space-12); }
  .footer__bottom { padding-inline: var(--space-12); }

  .cart__header,
  .cart__scroll,
  .cart__footer { padding: var(--space-6); }
  .cart__title { font-size: var(--text-2xl); }

  .float-bar { flex-direction: row; }
}

@media (min-width: 1024px) {
  .app__body { flex-direction: row; }

  .app__main.is-shifted { padding-right: var(--cart-width); }

  .cart-overlay { display: none; }

  .cart {
    top: 0;
    right: 0;
    bottom: 0;
    left: auto;
    width: var(--cart-width);
    height: 100%;
    border-radius: 0;
    animation: slide-in-right var(--duration) var(--ease);
  }

  .cart__handle { display: none; }

  .cart__header {
    background-color: transparent;
    color: var(--color-primary);
  }

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