/* ═══════════════════════════════════════
   tienda.css — Store page
   Signatus
   ═══════════════════════════════════════ */

body {
  background: var(--clr-black);
  color: var(--clr-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 300;
}

/* ─── NAV ─── */

.tnav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-nav);
  background: rgba(9,9,11,0.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--clr-border);
}

.tnav__inner {
  display: flex;
  align-items: center;
  height: 64px;
  gap: var(--sp-4);
}

.tnav__logo {
  display: flex;
  align-items: center;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--clr-text);
  text-decoration: none;
  transition: color var(--dur-base);
}
.tnav__logo:hover { color: var(--clr-accent); }

.tnav__wolf {
  height: 28px;
  width: 28px;
  object-fit: contain;
  margin-right: var(--sp-2);
}

.tnav__logo-mark { color: var(--clr-accent); }

.tnav__label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-text-3);
  margin-left: var(--sp-4);
  padding-left: var(--sp-4);
  border-left: 1px solid var(--clr-border);
}

.tnav__cart-btn {
  margin-left: auto;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--clr-text);
  background: transparent;
  border: 1px solid var(--clr-border);
  transition: border-color var(--dur-base), color var(--dur-base);
  cursor: pointer;
}
.tnav__cart-btn:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
}

.cart-badge {
  position: absolute;
  top: -6px;
  right: -6px;
  background: var(--clr-accent);
  color: white;
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ─── HERO ─── */

.tienda-hero {
  position: relative;
  padding-top: calc(64px + var(--sp-16));
  padding-bottom: var(--sp-16);
  overflow: hidden;
  border-bottom: 1px solid var(--clr-border);
}

.tienda-hero__label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: var(--sp-3);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}
.tienda-hero__label::before {
  content: '';
  display: block;
  width: 1.5rem;
  height: 1px;
  background: var(--clr-accent);
}

.tienda-hero__title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--clr-text);
  margin-bottom: var(--sp-4);
}
.tienda-hero__title span { color: var(--clr-accent); }

.tienda-hero__sub {
  font-size: var(--text-lg);
  color: var(--clr-text-2);
  font-weight: 300;
}

.tienda-hero__wolf {
  position: absolute;
  right: -2%;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.06;
  pointer-events: none;
}
.tienda-hero__wolf img {
  height: 60vh;
  width: auto;
}

/* ─── PRODUCTS GRID ─── */

.tienda-products {
  padding-block: var(--sp-16);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--sp-6);
}

.products-loading,
.products-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--sp-24);
  color: var(--clr-text-3);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
}

.spinner {
  width: 32px;
  height: 32px;
  border: 2px solid var(--clr-border-md);
  border-top-color: var(--clr-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── PRODUCT CARD (3D flip) ─── */

.product-scene {
  perspective: 1400px;
  height: 500px;
}

.product-card {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.65s cubic-bezier(0.22, 1, 0.36, 1);
}

.product-card.is-flipped {
  transform: rotateY(180deg);
}

.product-card__face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  overflow: hidden;
  background: var(--clr-surface-1);
  border: 1px solid var(--clr-border);
  display: flex;
  flex-direction: column;
  transition: border-color var(--dur-base);
}
.product-card__face:hover {
  border-color: var(--clr-border-md);
}

.product-card__back {
  transform: rotateY(180deg);
}

/* Card front — image area (360° spin container) */
.product-card__image {
  flex: 1;
  overflow: hidden;
  background: var(--clr-surface-2);
  position: relative;
  user-select: none;
  -webkit-user-select: none;
  touch-action: pan-y;
}

.product-card__image.is-spinnable {
  cursor: grab;
}
.product-card__image.is-spinnable.is-spinning {
  cursor: grabbing;
}

.product-image-3d {
  position: absolute;
  inset: 0;
}

.product-image-3d__inner {
  position: relative;
  width: 100%;
  height: 100%;
}

.product-image-3d__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.15s ease;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-image-3d__slide.is-active {
  opacity: 1;
}

.product-image-3d__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  user-select: none;
  -webkit-user-drag: none;
  pointer-events: none;
}

/* 3D model viewer */
.product-card__image.has-3d {
  cursor: grab;
  background:
    radial-gradient(circle at 50% 40%, rgba(229,53,53,0.08), transparent 60%),
    var(--clr-surface-2);
  touch-action: none;
}
.product-card__image.has-3d:active { cursor: grabbing; }

.product-3d-viewer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.product-3d-viewer canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
  outline: none;
}

.viewer-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 2;
}

.viewer-error {
  background: rgba(229,53,53,0.1);
  border: 1px solid rgba(229,53,53,0.3);
  color: var(--clr-accent);
  padding: var(--sp-3) var(--sp-4);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-align: center;
  max-width: 80%;
  line-height: 1.6;
}
.viewer-error small {
  display: block;
  margin-top: var(--sp-1);
  color: var(--clr-text-3);
  letter-spacing: 0.04em;
  font-weight: 300;
}

.spin-hint--3d {
  right: auto;
  left: 50%;
  top: auto;
  bottom: var(--sp-3);
  transform: translateX(-50%) translateY(4px);
}
.product-card__image.has-3d:hover .spin-hint--3d {
  transform: translateX(-50%) translateY(0);
}

/* Spin hint (appears when hovering, fades out after user interacts) */
.spin-hint {
  position: absolute;
  top: var(--sp-3);
  right: var(--sp-3);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(0,0,0,0.6);
  color: white;
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  backdrop-filter: blur(6px);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity var(--dur-base), transform var(--dur-base);
  pointer-events: none;
  z-index: 2;
}
.product-card__image:hover .spin-hint {
  opacity: 1;
  transform: translateY(0);
}
.product-card__image.has-interacted .spin-hint {
  opacity: 0 !important;
}

.spin-hint svg {
  flex-shrink: 0;
  color: var(--clr-accent);
}

/* Thin progress bar at bottom showing current frame */
.spin-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  display: flex;
  gap: 2px;
  padding: 0 var(--sp-2) var(--sp-2);
  pointer-events: none;
  z-index: 2;
}

.spin-progress__tick {
  flex: 1;
  height: 2px;
  background: rgba(255,255,255,0.15);
  transition: background var(--dur-fast);
}
.spin-progress__tick.is-active {
  background: var(--clr-accent);
}

.product-card__placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--clr-surface-2);
}
.placeholder-wolf {
  height: 120px !important;
  width: auto !important;
  opacity: 0.15;
  object-fit: contain !important;
}

.product-card__info {
  padding: var(--sp-5) var(--sp-6);
  border-top: 1px solid var(--clr-border);
}

.product-card__name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--clr-text);
  margin-bottom: var(--sp-1);
}

.product-card__price {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--clr-accent);
  margin-bottom: var(--sp-4);
}

.product-card__flip-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-text-2);
  background: transparent;
  border: 1px solid var(--clr-border-md);
  padding: var(--sp-2) var(--sp-4);
  cursor: pointer;
  transition: border-color var(--dur-base), color var(--dur-base);
  width: 100%;
  justify-content: center;
}
.product-card__flip-btn:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
}

/* Card back */
.product-card__back-content {
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  height: 100%;
}

.product-card__back-content h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--clr-text);
}

.product-card__desc {
  font-size: var(--text-sm);
  color: var(--clr-text-2);
  line-height: 1.6;
  flex: 1;
}

.product-card__size-label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-text-3);
}

.size-selector {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.size-btn {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: var(--sp-2) var(--sp-3);
  background: transparent;
  border: 1px solid var(--clr-border-md);
  color: var(--clr-text-2);
  cursor: pointer;
  transition: border-color var(--dur-base), background var(--dur-base), color var(--dur-base);
  min-width: 44px;
  text-align: center;
}
.size-btn:hover:not(:disabled) {
  border-color: var(--clr-accent);
  color: var(--clr-text);
}
.size-btn.is-selected {
  background: var(--clr-accent);
  border-color: var(--clr-accent);
  color: white;
}
.size-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  text-decoration: line-through;
}

.qty-selector {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  border: 1px solid var(--clr-border);
  align-self: flex-start;
}

.qty-btn {
  width: 36px;
  height: 36px;
  background: transparent;
  border: none;
  color: var(--clr-text);
  font-size: var(--text-xl);
  cursor: pointer;
  transition: background var(--dur-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}
.qty-btn:hover { background: var(--clr-surface-3); }

.qty-value {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  min-width: 24px;
  text-align: center;
}

.product-card__back-btn {
  background: transparent;
  border: none;
  color: var(--clr-text-3);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  cursor: pointer;
  text-align: left;
  transition: color var(--dur-fast);
  padding: 0;
  text-transform: uppercase;
}
.product-card__back-btn:hover { color: var(--clr-text); }

/* ─── CART SIDEBAR ─── */

.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: calc(var(--z-overlay) - 1);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-slow);
}
.cart-overlay.is-open {
  opacity: 1;
  pointer-events: all;
}

.cart-sidebar {
  position: fixed;
  top: 0;
  right: -440px;
  width: 420px;
  max-width: 100vw;
  height: 100dvh;
  background: var(--clr-surface-1);
  border-left: 1px solid var(--clr-border);
  z-index: var(--z-overlay);
  transition: right var(--dur-slow) var(--ease-out);
  display: flex;
  flex-direction: column;
}
.cart-sidebar.is-open { right: 0; }

.cart-sidebar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-5) var(--sp-6);
  border-bottom: 1px solid var(--clr-border);
  flex-shrink: 0;
}
.cart-sidebar__header h2 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.1em;
}

.cart-sidebar__close {
  width: 32px;
  height: 32px;
  background: transparent;
  border: 1px solid var(--clr-border);
  color: var(--clr-text);
  font-size: var(--text-xl);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--dur-fast);
  line-height: 1;
}
.cart-sidebar__close:hover { border-color: var(--clr-accent); color: var(--clr-accent); }

.cart-sidebar__items {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.cart-empty {
  text-align: center;
  color: var(--clr-text-3);
  font-size: var(--text-sm);
  margin: auto;
}

.cart-item {
  display: grid;
  grid-template-columns: 60px 1fr auto;
  gap: var(--sp-3);
  align-items: center;
  background: var(--clr-surface-2);
  padding: var(--sp-3);
  border: 1px solid var(--clr-border);
}

.cart-item__img {
  width: 60px;
  height: 60px;
  object-fit: cover;
  background: var(--clr-surface-3);
  display: flex;
  align-items: center;
  justify-content: center;
}
.cart-item__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cart-item__img-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--clr-surface-3);
}
.cart-item__img-placeholder img {
  width: 30px;
  height: 30px;
  opacity: 0.2;
  object-fit: contain;
}

.cart-item__info { min-width: 0; }

.cart-item__name {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--clr-text);
  margin-bottom: var(--sp-1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cart-item__meta {
  font-size: var(--text-xs);
  color: var(--clr-text-3);
  letter-spacing: 0.06em;
}

.cart-item__price {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--clr-accent);
}

.cart-item__remove {
  display: block;
  margin-top: var(--sp-1);
  background: none;
  border: none;
  color: var(--clr-text-3);
  font-size: var(--text-xs);
  cursor: pointer;
  padding: 0;
  transition: color var(--dur-fast);
  text-decoration: underline;
}
.cart-item__remove:hover { color: var(--clr-accent); }

.cart-sidebar__footer {
  padding: var(--sp-5) var(--sp-6);
  border-top: 1px solid var(--clr-border);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.cart-total {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.08em;
}
.cart-total span:first-child {
  font-size: var(--text-sm);
  color: var(--clr-text-3);
}
.cart-total__value {
  font-size: var(--text-2xl);
  color: var(--clr-text);
}

/* ─── BUTTONS ─── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.7rem 1.5rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--dur-base), color var(--dur-base), border-color var(--dur-base), transform var(--dur-fast);
  white-space: nowrap;
  text-decoration: none;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--accent {
  background: var(--clr-accent);
  color: white;
  border-color: var(--clr-accent);
}
.btn--accent:hover { background: var(--clr-accent-dark); border-color: var(--clr-accent-dark); }

.btn--ghost {
  background: transparent;
  color: var(--clr-text);
  border-color: var(--clr-border-md);
}
.btn--ghost:hover { border-color: var(--clr-accent); color: var(--clr-accent); }

.btn--full { width: 100%; }

.btn--lg { padding: 0.85rem 2rem; font-size: var(--text-base); }

/* ─── CHECKOUT MODAL ─── */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  z-index: calc(var(--z-overlay) + 10);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-4);
}

.checkout-modal {
  background: var(--clr-surface-1);
  border: 1px solid var(--clr-border);
  width: 100%;
  max-width: 520px;
  max-height: 90dvh;
  overflow-y: auto;
  padding: var(--sp-8);
  position: relative;
}

.modal-close {
  position: absolute;
  top: var(--sp-4);
  right: var(--sp-4);
  width: 32px;
  height: 32px;
  background: transparent;
  border: 1px solid var(--clr-border);
  color: var(--clr-text);
  font-size: var(--text-xl);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition: border-color var(--dur-fast);
}
.modal-close:hover { border-color: var(--clr-accent); color: var(--clr-accent); }

.checkout-modal__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: var(--sp-6);
  padding-right: var(--sp-8);
}

.checkout-summary {
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  padding: var(--sp-4);
  margin-bottom: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.checkout-summary-item {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-sm);
  color: var(--clr-text-2);
}

.checkout-summary-total {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  border-top: 1px solid var(--clr-border);
  padding-top: var(--sp-2);
  margin-top: var(--sp-2);
  color: var(--clr-text);
}
.checkout-summary-total span:last-child { color: var(--clr-accent); }

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.form-group label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-text-3);
}

.form-group input,
.form-group textarea {
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border-md);
  color: var(--clr-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  padding: var(--sp-3) var(--sp-4);
  outline: none;
  transition: border-color var(--dur-base);
  resize: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--clr-accent);
}
.form-group input.is-error,
.form-group textarea.is-error {
  border-color: var(--clr-accent);
}

.checkout-note {
  font-size: var(--text-sm);
  color: var(--clr-text-3);
  line-height: 1.6;
}

/* Success state */
.checkout-success {
  text-align: center;
  padding: var(--sp-8) var(--sp-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
}

.success-check {
  width: 64px;
  height: 64px;
  background: var(--clr-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
  font-weight: 700;
}

.checkout-success h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.checkout-success p {
  font-size: var(--text-base);
  color: var(--clr-text-2);
  line-height: 1.7;
  max-width: 360px;
}

.success-tag {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--clr-accent) !important;
  letter-spacing: 0.1em;
}

/* ─── RESPONSIVE ─── */

@media (max-width: 640px) {
  .tnav__label { display: none; }
  .products-grid { grid-template-columns: 1fr; }
  .product-scene { height: 480px; }
  .cart-sidebar { width: 100vw; right: -100vw; }
  .cart-sidebar.is-open { right: 0; }
}