/* =============================================
   TECNOLOGYSMITH STORE — CSS PROFESIONAL
   Paleta: Noche tecnológica + Cian eléctrico
   ============================================= */

:root {
  --black:        #080c14;
  --surface:      #0d1526;
  --surface-2:    #111d35;
  --border:       rgba(255,255,255,0.07);
  --border-hover: rgba(99,211,255,0.35);

  --cyan:         #63d3ff;
  --cyan-dim:     rgba(99,211,255,0.12);
  --cyan-glow:    rgba(99,211,255,0.25);
  --green:        #2ecc71;

  --text:         #eef2ff;
  --text-muted:   #8896b3;
  --text-dim:     #4a5a78;

  --radius-sm:  8px;
  --radius-md:  16px;
  --radius-lg:  24px;
  --radius-xl:  32px;

  --ease: cubic-bezier(.4,0,.2,1);
  --transition: 0.25s var(--ease);

  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-hover: 0 16px 48px rgba(0,0,0,0.6), 0 0 32px rgba(99,211,255,0.08);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--black);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ---- TOP NAV ---- */
.topnav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(8,12,20,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  flex-shrink: 0;
}

.logo-icon {
  font-size: 1.4rem;
  filter: drop-shadow(0 0 8px var(--cyan));
}

.logo-text {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #fff 30%, var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 4px;
  flex: 1;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover {
  color: var(--text);
  background: var(--surface-2);
}

.cart-btn {
  margin-left: auto;
  position: relative;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}

.cart-btn:hover {
  border-color: var(--border-hover);
  background: var(--cyan-dim);
  color: var(--cyan);
}

.cart-badge {
  position: absolute;
  top: -6px;
  right: -6px;
  background: #ef4444;
  color: white;
  font-size: 0.65rem;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
  border: 2px solid var(--black);
  transition: transform 0.2s var(--ease);
}

.cart-badge.bump {
  transform: scale(1.4);
}

/* ---- HERO ---- */
.hero {
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(99,211,255,0.08) 0%, transparent 70%),
              linear-gradient(180deg, var(--surface) 0%, var(--black) 100%);
  border-bottom: 1px solid var(--border);
  padding: 80px 24px 60px;
}

.hero-inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 20px;
  opacity: 0.9;
}

.hero-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2.2rem, 6vw, 3.8rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 20px;
}

.hero-gradient {
  background: linear-gradient(135deg, var(--cyan) 0%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

/* ---- SEARCH ---- */
.search-wrap {
  display: flex;
  gap: 10px;
  max-width: 580px;
  margin: 0 auto;
}

.search-box {
  flex: 1;
  position: relative;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  padding: 13px 16px 13px 44px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-box input::placeholder {
  color: var(--text-dim);
}

.search-box input:focus {
  border-color: var(--border-hover);
  box-shadow: 0 0 0 3px var(--cyan-glow);
  background: var(--surface);
}

.category-select {
  padding: 13px 16px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
  transition: border-color var(--transition);
  min-width: 140px;
}

.category-select:focus {
  border-color: var(--border-hover);
}

.category-select option {
  background: var(--surface-2);
}

/* ---- MAIN CONTENT ---- */
.main-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 32px;
}

.section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.product-count {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* ---- PRODUCT GRID ---- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 20px;
}

/* ---- PRODUCT CARD ---- */
.product-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  cursor: default;
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
}

.product-img-wrap {
  position: relative;
  background: var(--surface-2);
  padding: 24px;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.product-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.4s var(--ease);
}

.product-card:hover .product-img-wrap img {
  transform: scale(1.06);
}

.product-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 10px;
}

.category-badge {
  display: inline-flex;
  align-items: center;
  background: var(--cyan-dim);
  color: var(--cyan);
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  width: fit-content;
}

.product-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
}

.product-price {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: -0.02em;
}

.product-price small {
  font-size: 0.9rem;
  font-weight: 500;
  opacity: 0.7;
}

.card-actions {
  display: flex;
  gap: 8px;
  margin-top: auto;
  padding-top: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 16px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan) 0%, #7dd3fc 100%);
  color: #050a14;
  flex: 1;
}

.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 4px 16px var(--cyan-glow);
}

.btn-secondary {
  background: var(--surface-2);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--border-hover);
  color: var(--text);
  background: rgba(99,211,255,0.05);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  width: 100%;
}

.btn-ghost:hover {
  color: var(--text);
  border-color: var(--border-hover);
}

.btn-green {
  background: var(--green);
  color: #fff;
  flex: 1;
}

.btn-green:hover {
  filter: brightness(1.08);
  box-shadow: 0 4px 16px rgba(46,204,113,0.3);
}

.btn-danger {
  background: rgba(239,68,68,0.12);
  color: #f87171;
  border: 1px solid rgba(239,68,68,0.2);
  width: 100%;
}

.btn-danger:hover {
  background: rgba(239,68,68,0.2);
}

.btn-lg {
  padding: 14px 24px;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
}

/* ---- EMPTY STATE ---- */
.empty-state {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  filter: grayscale(0.5);
}

.empty-state p {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 6px;
}

.empty-state small {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* ---- CONTACT SECTION ---- */
.contact-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 48px 24px;
}

.contact-inner {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.contact-text h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.contact-text p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.whatsapp-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #25d366;
  color: white;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--transition);
  flex-shrink: 0;
}

.whatsapp-btn:hover {
  background: #1ebe5d;
  box-shadow: 0 4px 16px rgba(37,211,102,0.35);
  transform: translateY(-2px);
}

/* ---- FOOTER ---- */
.footer {
  text-align: center;
  padding: 32px 24px;
  color: var(--text-dim);
  font-size: 0.82rem;
  border-top: 1px solid var(--border);
}

/* ---- MODAL ---- */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 16px;
  overflow-y: auto;
}

.modal.open {
  display: flex;
}

.modal-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px;
  position: relative;
  box-shadow: 0 32px 80px rgba(0,0,0,0.6);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  transition: all var(--transition);
}

.modal-close:hover {
  color: var(--text);
  border-color: var(--border-hover);
}

/* Modal — Product Detail */
.modal-img-carousel {
  position: relative;
  background: var(--surface-2);
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-img-carousel img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 16px;
}

.carousel-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.6);
  border: none;
  color: white;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.carousel-nav:hover {
  background: rgba(99,211,255,0.3);
}

.carousel-prev { left: 8px; }
.carousel-next { right: 8px; }

.modal-product-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.modal-product-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.65;
  margin-bottom: 16px;
}

.modal-product-price {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--cyan);
  margin-bottom: 20px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* Modal — Cart */
.cart-modal-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.cart-items {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 20px;
}

.cart-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
}

.cart-item:last-child {
  border-bottom: none;
}

.cart-item-name {
  color: var(--text);
  font-weight: 500;
  flex: 1;
  margin-right: 12px;
}

.cart-item-price {
  color: var(--cyan);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  white-space: nowrap;
}

.cart-total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background: var(--surface-2);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}

.cart-total-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

.cart-total-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cyan);
}

/* Form inside modal */
.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--border-hover);
  box-shadow: 0 0 0 3px var(--cyan-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-dim);
}

.form-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 20px 0;
}

/* ---- TOAST ---- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: var(--surface-2);
  border: 1px solid var(--border-hover);
  color: var(--text);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  z-index: 3000;
  opacity: 0;
  transition: all 0.3s var(--ease);
  pointer-events: none;
  white-space: nowrap;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---- LOADING SKELETON ---- */
.skeleton {
  background: linear-gradient(90deg, var(--surface-2) 25%, var(--surface) 50%, var(--surface-2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ---- RESPONSIVE ---- */
@media (max-width: 640px) {
  .nav-links { display: none; }

  .hero { padding: 56px 16px 48px; }

  .search-wrap { flex-direction: column; }

  .category-select { min-width: auto; }

  .main-content { padding: 32px 16px 60px; }

  .product-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
  }

  .product-body { padding: 14px; gap: 8px; }

  .product-price { font-size: 1.2rem; }

  .card-actions { flex-direction: column; }

  .contact-inner { flex-direction: column; text-align: center; }

  .modal-box { padding: 24px 18px; border-radius: var(--radius-lg); }

  .modal-product-title { font-size: 1.2rem; }

  .modal-actions { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}