/* ============================================
   PAGE: PC Builder
   Unified design system for builder flow
   ============================================ */

/* ============================================
   HERO / PAGE HEADER
   ============================================ */
.es-build-hero {
  text-align: center;
  padding: 3rem 0 2.5rem;
}

.es-build-hero__title {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink-900);
  margin-bottom: 0.375rem;
}

.es-build-hero__title--gradient {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.es-build-hero__subtitle {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--ink-400);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.es-build-hero__line {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-primary-dark));
  border-radius: 2px;
  margin: 0 auto;
}

/* ============================================
   SERVICE / BRAND CARDS
   ============================================ */
.es-build-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.25rem;
  padding: 2rem 0 4rem;
}

.es-build-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  width: 240px;
  text-decoration: none;
  transition: transform var(--duration-slow) var(--ease-spring),
              box-shadow var(--duration-slow) var(--ease-out),
              border-color var(--duration-base) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.es-build-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--purple-50), transparent 60%);
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-out);
}

.es-build-card:hover {
  transform: translateY(-4px);
  border-color: var(--clr-primary-light);
  box-shadow: var(--shadow-md);
}

.es-build-card:hover::before {
  opacity: 1;
}

.es-build-card__img-wrap {
  position: relative;
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  z-index: 1;
  background: #fff;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 0.5rem;
}

.es-build-card__img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: grayscale(15%);
  transition: filter var(--duration-base) var(--ease-out),
              transform var(--duration-slow) var(--ease-spring);
}

.es-build-card:hover .es-build-card__img {
  filter: grayscale(0%);
  transform: scale(1.05);
}

.es-build-card__title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--ink-700);
  transition: color var(--duration-base) var(--ease-out);
  position: relative;
  z-index: 1;
  letter-spacing: -0.01em;
}

.es-build-card:hover .es-build-card__title {
  color: var(--clr-primary-dark);
}

.es-build-card__arrow {
  margin-top: 0.875rem;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--clr-primary);
  border: 1px solid var(--border-default);
  font-size: 1rem;
  transition:
    background     var(--duration-fast) var(--ease-out),
    border-color   var(--duration-fast) var(--ease-out),
    color          var(--duration-fast) var(--ease-out),
    transform      var(--duration-fast) var(--ease-spring);
  position: relative;
  z-index: 1;
}

.es-build-card:hover .es-build-card__arrow {
  background: var(--clr-primary-light);
  border-color: var(--border-strong);
  color: var(--clr-primary-dark);
  transform: translateX(3px);
}

/* ============================================
   STICKY BUILD HEADER (glassmorphism)
   ============================================ */
.es-build-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: hsl(0 0% 100% / 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-default);
  padding: 0.875rem 0;
}

.es-build-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.es-build-header__budget {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink-700);
}

.es-build-header__budget span {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 1.25rem;
  font-weight: 900;
}

.es-build-header__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
}

.es-build-header__btn--primary {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: #fff;
  box-shadow: 0 4px 14px hsl(263 68% 58% / 0.35);
}

.es-build-header__btn--primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px hsl(263 68% 58% / 0.45);
}

.es-build-header__btn--primary:disabled {
  background: var(--surface-raised);
  color: var(--ink-300);
  box-shadow: none;
  cursor: not-allowed;
}

/* ============================================
   STEP INDICATOR
   ============================================ */
.es-build-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 2.5rem;
  padding: 0 1rem;
}

.es-build-step {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  background: var(--surface-subtle);
  color: var(--ink-400);
  cursor: not-allowed;
  transition: all var(--duration-base) var(--ease-out);
  position: relative;
}

.es-build-step:first-child {
  border-radius: var(--radius-pill) 0 0 var(--radius-pill);
}

.es-build-step:last-child {
  border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
}

.es-build-step--active {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: #fff;
  cursor: default;
  box-shadow: 0 4px 14px hsl(263 68% 58% / 0.3);
}

.es-build-step--ready {
  background: var(--purple-100);
  color: var(--purple-700);
  cursor: pointer;
}

.es-build-step--ready:hover {
  background: var(--purple-200);
}

.es-build-step__num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  background: hsl(0 0% 100% / 0.2);
}

.es-build-step--active .es-build-step__num {
  background: hsl(0 0% 100% / 0.25);
}

.es-build-step__label {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.es-build-step__sublabel {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  opacity: 0.8;
}

/* Connector line between steps */
.es-build-step:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 2px;
  background: var(--border-default);
  z-index: 1;
}

.es-build-step--active:not(:last-child)::after,
.es-build-step--ready:not(:last-child)::after {
  background: var(--clr-primary-light);
}

/* ============================================
   COMPONENT ROWS
   ============================================ */
.es-build-section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.875rem;
  border-bottom: 2px solid var(--surface-raised);
}

.es-build-section__title {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--ink-800);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.es-build-section__count {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--clr-primary);
  background: var(--purple-50);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-pill);
}

.es-build-list {
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 2.5rem;
}

.es-build-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--surface-raised);
  transition: background var(--duration-fast) var(--ease-out);
}

.es-build-row:last-child {
  border-bottom: none;
}

.es-build-row:hover {
  background: var(--surface-subtle);
}

.es-build-row__left {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 0;
}

.es-build-row__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--surface-raised);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.es-build-row__icon img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.es-build-row__name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--ink-700);
}

.es-build-row__mid {
  min-width: 0;
}

.es-build-row__empty {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--purple-50);
  color: var(--clr-primary);
  border-radius: var(--radius-pill);
  font-size: 0.8125rem;
  font-weight: 600;
  font-style: italic;
}

.es-build-row__selected {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 1rem;
  background: #fff;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xs);
}

.es-build-row__selected img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.es-build-row__selected-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.es-build-row__selected-title {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--ink-800);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 200px;
}

.es-build-row__selected-meta {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--ink-400);
}

.es-build-row__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.es-build-row__btn {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.es-build-row__btn--select {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: #fff;
  box-shadow: 0 2px 8px hsl(263 68% 58% / 0.25);
}

.es-build-row__btn--select:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px hsl(263 68% 58% / 0.35);
}

.es-build-row__btn--ghost {
  background: transparent;
  color: var(--clr-primary);
  padding: 0.5rem 0.75rem;
}

.es-build-row__btn--ghost:hover {
  color: var(--clr-primary-dark);
  background: var(--purple-50);
}

.es-build-row__btn--danger {
  background: transparent;
  color: var(--clr-red);
  padding: 0.5rem 0.75rem;
}

.es-build-row__btn--danger:hover {
  background: hsl(0 72% 51% / 0.08);
}

.es-build-row__divider {
  width: 1px;
  height: 16px;
  background: var(--border-default);
}

/* ============================================
   BOTTOM ACTION BAR
   ============================================ */
.es-build-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 2rem 0 3rem;
  border-top: 2px solid var(--surface-raised);
}

.es-build-footer__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.es-build-footer__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-pill);
  font-size: 0.9375rem;
  font-weight: 700;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
  min-width: 220px;
}

.es-build-footer__btn--primary {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 16px hsl(263 68% 58% / 0.3);
}

.es-build-footer__btn--primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px hsl(263 68% 58% / 0.4);
}

.es-build-footer__btn--primary:disabled {
  background: var(--surface-raised);
  color: var(--ink-300);
  box-shadow: none;
  cursor: not-allowed;
}

.es-build-footer__btn--secondary {
  background: #fff;
  color: var(--clr-primary);
  border-color: var(--clr-primary-light);
}

.es-build-footer__btn--secondary:hover:not(:disabled) {
  background: var(--purple-50);
  border-color: var(--clr-primary);
}

.es-build-footer__btn--secondary:disabled {
  background: var(--surface-subtle);
  color: var(--ink-300);
  border-color: var(--border-default);
  cursor: not-allowed;
}

.es-build-footer__btn--danger {
  background: #fff;
  color: var(--clr-red);
  border-color: hsl(0 72% 51% / 0.2);
}

.es-build-footer__btn--danger:hover {
  background: hsl(0 72% 51% / 0.06);
  border-color: var(--clr-red);
}

/* ============================================
   PRODUCT MODAL / OVERLAY
   ============================================ */
.es-build-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: hsl(245 60% 12% / 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-base) var(--ease-out),
              visibility var(--duration-base) var(--ease-out);
}

.es-build-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.es-build-overlay__inner {
  background: var(--surface-page);
  width: 92%;
  max-width: 720px;
  max-height: 85vh;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg), 0 24px 64px hsl(245 60% 12% / 0.2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.96) translateY(12px);
  transition: transform var(--duration-base) var(--ease-spring);
  z-index: 100000; 
}

.es-build-overlay.is-open .es-build-overlay__inner {
  transform: scale(1) translateY(0);
}

.es-build-overlay__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-default);
  background: var(--surface-subtle);
}

.es-build-overlay__title {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--ink-800);
}

.es-build-overlay__close {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: var(--surface-raised);
  color: var(--ink-400);
  font-size: 1.25rem;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.es-build-overlay__close:hover {
  background: hsl(0 72% 51% / 0.1);
  color: var(--clr-red);
  transform: rotate(90deg);
}

.es-build-overlay__body {
  padding: 1.25rem 1.5rem;
  overflow-y: auto;
  flex: 1;
}

/* Product cards inside modal */
.es-build-product {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  margin-bottom: 0.75rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.es-build-product:last-child {
  margin-bottom: 0;
}

.es-build-product:hover {
  border-color: var(--clr-primary-light);
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}

.es-build-product__img {
  width: 64px;
  height: 64px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: #fff;
  flex-shrink: 0;
}

.es-build-product__info {
  flex: 1;
  min-width: 0;
}

.es-build-product__title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--ink-800);
  margin-bottom: 0.25rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.es-build-product__price {
  font-size: 1rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.es-build-product__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.es-build-qty {
  display: flex;
  align-items: center;
  background: var(--surface-subtle);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.es-build-qty__btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--ink-600);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-out);
}

.es-build-qty__btn:hover {
  background: var(--surface-raised);
}

.es-build-qty__value {
  min-width: 32px;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ink-800);
}

.es-build-product__add {
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-pill);
  border: none;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.es-build-product__add:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px hsl(263 68% 58% / 0.35);
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.es-build-toast {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 10000;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-lg);
  font-weight: 700;
  font-size: 0.875rem;
  color: #fff;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transform: translateX(120%);
  transition: transform var(--duration-base) var(--ease-spring);
  pointer-events: none;
}

.es-build-toast.is-visible {
  transform: translateX(0);
}

.es-build-toast--success {
  background: linear-gradient(135deg, hsl(160 65% 38%), hsl(160 65% 32%));
}

.es-build-toast--error {
  background: linear-gradient(135deg, hsl(0 72% 51%), hsl(0 72% 45%));
}

/* ============================================
   EMPTY STATE
   ============================================ */
.es-build-empty {
  text-align: center;
  padding: 4rem 2rem;
}

.es-build-empty__icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: var(--surface-subtle);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-300);
  font-size: 2rem;
}

.es-build-empty__title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--ink-700);
  margin-bottom: 0.5rem;
}

.es-build-empty__text {
  color: var(--ink-400);
  font-size: 0.9375rem;
}

.es-build-empty__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  color: var(--clr-primary);
  font-weight: 700;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

.es-build-empty__link:hover {
  color: var(--clr-primary-dark);
}

/* ============================================
   LOADING STATE
   ============================================ */
.es-build-loading {
  text-align: center;
  padding: 3rem;
  color: var(--ink-400);
}

.es-build-loading__spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-default);
  border-top-color: var(--clr-primary);
  border-radius: 50%;
  margin: 0 auto 1rem;
  animation: esBuildSpin 0.8s linear infinite;
}

@keyframes esBuildSpin {
  to { transform: rotate(360deg); }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .es-build-row {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .es-build-row__actions {
    justify-content: flex-end;
  }

  .es-build-step {
    padding: 0.625rem 1rem;
    gap: 0.5rem;
  }

  .es-build-step__label {
    font-size: 0.75rem;
  }

  .es-build-step__sublabel {
    display: none;
  }

  .es-build-product {
    flex-wrap: wrap;
  }

  .es-build-product__actions {
    width: 100%;
    justify-content: flex-end;
    margin-top: 0.5rem;
  }

  .es-build-header__inner {
    flex-direction: column;
    text-align: center;
  }

  .es-build-footer__btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .es-build-card {
    width: 100%;
    max-width: 280px;
    padding: 1.5rem 1.25rem;
  }

  .es-build-card__img-wrap {
    width: 100px;
    height: 100px;
  }

  .es-build-hero__title {
    font-size: 1.375rem;
  }
}