/* ============================================
   ROBOTS.TIENDA - Hoja de estilos principal
   ============================================ */

/* ---- Variables ---- */
:root {
  --primary: #00d4ff;
  --primary-dark: #0099cc;
  --secondary: #ff4d00;
  --accent: #7b2fff;
  --dark: #050a14;
  --dark-2: #0a1628;
  --dark-3: #0f2040;
  --dark-4: #162a4a;
  --light: #e8f4ff;
  --text-muted: #7a9cc4;
  --text: #c8dff0;
  --white: #ffffff;
  --success: #00e676;
  --warning: #ffd740;
  --danger: #ff5252;

  --font-main: 'Exo 2', sans-serif;
  --font-code: 'Share Tech Mono', monospace;

  --shadow: 0 4px 30px rgba(0, 212, 255, 0.12);
  --shadow-card: 0 8px 40px rgba(0, 0, 0, 0.5);
  --border: 1px solid rgba(0, 212, 255, 0.15);
  --border-hover: 1px solid rgba(0, 212, 255, 0.5);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-main);
  background-color: var(--dark);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark-2); }
::-webkit-scrollbar-thumb { background: var(--primary-dark); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ---- Tipografía ---- */
h1, h2, h3, h4, h5, h6 {
  color: var(--white);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--white); }

p { color: var(--text); line-height: 1.8; }

img { max-width: 100%; height: auto; }

/* ============================================
   NAVEGACIÓN
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(5, 10, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 212, 255, 0.1);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(5, 10, 20, 0.98);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-code);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white);
}

.nav-logo .logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

.nav-logo span { color: var(--primary); }

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0.25rem;
}

.nav-menu a {
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  position: relative;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.nav-menu a:hover, .nav-menu a.active {
  color: var(--primary);
  background: rgba(0, 212, 255, 0.08);
}

.nav-cta {
  background: linear-gradient(135deg, var(--primary), var(--accent)) !important;
  color: var(--white) !important;
  padding: 0.5rem 1.25rem !important;
  border-radius: 8px !important;
  font-weight: 600 !important;
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.5) !important;
  background: linear-gradient(135deg, var(--primary), var(--accent)) !important;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  width: 26px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 72px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0, 212, 255, 0.08) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 80% 50%, rgba(123, 47, 255, 0.08) 0%, transparent 60%),
    linear-gradient(180deg, var(--dark) 0%, var(--dark-2) 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 4rem 2rem;
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.3);
  color: var(--primary);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 900;
  line-height: 1.05;
  margin-bottom: 1.5rem;
  letter-spacing: -0.04em;
}

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

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text);
  margin-bottom: 2.5rem;
  max-width: 520px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.stat-item {
  text-align: left;
}

.stat-number {
  font-family: var(--font-code);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
  display: block;
  line-height: 1;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-robot-container {
  position: relative;
  width: 100%;
  max-width: 500px;
}

.hero-robot-img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: 0 0 80px rgba(0, 212, 255, 0.2), var(--shadow-card);
  border: var(--border);
}

.hero-float-card {
  position: absolute;
  background: rgba(10, 22, 40, 0.9);
  backdrop-filter: blur(15px);
  border: var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow);
  animation: float 4s ease-in-out infinite;
}

.hero-float-card:nth-child(2) { animation-delay: -2s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.float-card-1 {
  top: 10%;
  left: -15%;
}

.float-card-2 {
  bottom: 15%;
  right: -10%;
}

.float-card-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.float-card-value {
  font-family: var(--font-code);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
}

/* ============================================
   BOTONES
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius);
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: var(--transition);
}

.btn:hover::after { opacity: 1; }

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--dark);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.5);
  color: var(--dark);
}

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

.btn-outline:hover {
  background: rgba(0, 212, 255, 0.1);
  transform: translateY(-2px);
  color: var(--white);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--secondary), #cc3900);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(255, 77, 0, 0.35);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 77, 0, 0.5);
  color: var(--white);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent), #5a1fc8);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(123, 47, 255, 0.35);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(123, 47, 255, 0.5);
  color: var(--white);
}

.btn-sm {
  padding: 0.55rem 1.2rem;
  font-size: 0.82rem;
}

/* ============================================
   SECCIONES GENERALES
   ============================================ */
.section {
  padding: 6rem 0;
}

.section-alt {
  background: var(--dark-2);
}

.section-dark {
  background: var(--dark-3);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-code);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--primary);
  margin-bottom: 0.75rem;
  padding: 0.3rem 0.8rem;
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 4px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

/* ============================================
   TARJETAS DE PRODUCTO
   ============================================ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.product-card {
  background: var(--dark-3);
  border: var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
  cursor: pointer;
}

.product-card:hover {
  transform: translateY(-8px);
  border: var(--border-hover);
  box-shadow: 0 20px 60px rgba(0, 212, 255, 0.15);
}

.product-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  z-index: 2;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.badge {
  padding: 0.3rem 0.7rem;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-featured {
  background: linear-gradient(135deg, var(--secondary), #cc3900);
  color: var(--white);
}

.badge-new {
  background: linear-gradient(135deg, var(--success), #00b050);
  color: var(--dark);
}

.badge-sold-out {
  background: rgba(255, 82, 82, 0.2);
  color: var(--danger);
  border: 1px solid var(--danger);
}

.badge-cat {
  background: rgba(0, 212, 255, 0.15);
  color: var(--primary);
  border: 1px solid rgba(0, 212, 255, 0.3);
}

.product-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-card:hover .product-image { transform: scale(1.05); }

.product-body {
  padding: 1.5rem;
}

.product-category {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.product-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.5rem;
  font-family: var(--font-code);
  letter-spacing: 0.02em;
}

.product-maker {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.product-description {
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 1rem;
}

.product-rating {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 1.25rem;
}

.stars { color: var(--warning); font-size: 0.85rem; }
.rating-num { font-size: 0.82rem; color: var(--text-muted); font-family: var(--font-code); }

.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: var(--border);
}

.product-price {
  font-family: var(--font-code);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
}

.product-price small {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: block;
  line-height: 1;
}

/* ============================================
   TARJETAS DE ARTÍCULO / BLOG
   ============================================ */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 2rem;
}

.article-card {
  background: var(--dark-3);
  border: var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-6px);
  border: var(--border-hover);
  box-shadow: 0 20px 50px rgba(0, 212, 255, 0.12);
}

.article-image-wrap {
  position: relative;
  overflow: hidden;
  height: 200px;
}

.article-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.article-card:hover .article-image { transform: scale(1.07); }

.article-cat-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.cat-debate { background: rgba(255, 77, 0, 0.85); color: white; }
.cat-opinion { background: rgba(123, 47, 255, 0.85); color: white; }
.cat-noticia { background: rgba(0, 212, 255, 0.85); color: var(--dark); }
.cat-tutorial { background: rgba(0, 230, 118, 0.85); color: var(--dark); }
.cat-review { background: rgba(255, 215, 64, 0.85); color: var(--dark); }

.article-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.article-excerpt {
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 1.25rem;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding-top: 1rem;
  border-top: var(--border);
}

.article-author {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.author-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--dark);
}

.article-stats {
  display: flex;
  gap: 1rem;
}

.article-stat {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

/* ============================================
   CATEGORÍAS
   ============================================ */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1.5rem;
}

.category-card {
  background: var(--dark-3);
  border: var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.25rem;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: var(--transition);
}

.category-card:hover {
  transform: translateY(-6px);
  border-color: transparent;
}

.category-card.cat-hogar::before { background: linear-gradient(135deg, rgba(0,212,255,0.15), rgba(0,212,255,0.05)); }
.category-card.cat-industrial::before { background: linear-gradient(135deg, rgba(255,77,0,0.15), rgba(255,77,0,0.05)); }
.category-card.cat-educacion::before { background: linear-gradient(135deg, rgba(123,47,255,0.15), rgba(123,47,255,0.05)); }
.category-card.cat-social::before { background: linear-gradient(135deg, rgba(0,230,118,0.15), rgba(0,230,118,0.05)); }
.category-card.cat-mascota::before { background: linear-gradient(135deg, rgba(255,215,64,0.15), rgba(255,215,64,0.05)); }

.category-card:hover::before { opacity: 1; }

.category-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
}

.category-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.25rem;
}

.category-count {
  font-family: var(--font-code);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============================================
   FILTROS DE TIENDA
   ============================================ */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
  padding: 1.25rem 1.5rem;
  background: var(--dark-3);
  border: var(--border);
  border-radius: var(--radius);
}

.filter-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 600;
}

.filter-btn {
  padding: 0.45rem 1rem;
  border-radius: 100px;
  background: transparent;
  border: 1px solid rgba(0, 212, 255, 0.2);
  color: var(--text);
  font-size: 0.85rem;
  font-family: var(--font-main);
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--primary);
  color: var(--primary);
}

.search-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
  background: var(--dark-2);
  border: var(--border);
  border-radius: 8px;
  padding: 0.4rem 1rem;
}

.search-input {
  background: transparent;
  border: none;
  color: var(--white);
  font-family: var(--font-main);
  font-size: 0.88rem;
  width: 200px;
  outline: none;
}

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

/* ============================================
   NEWSLETTER SECTION
   ============================================ */
.newsletter-section {
  background: linear-gradient(135deg, var(--dark-3) 0%, var(--dark-4) 100%);
  border-top: var(--border);
  border-bottom: var(--border);
  padding: 5rem 0;
  position: relative;
  overflow: hidden;
}

.newsletter-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0,212,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.newsletter-inner {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 2;
}

.newsletter-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
}

.newsletter-subtitle {
  color: var(--text-muted);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.newsletter-form {
  display: flex;
  gap: 1rem;
  max-width: 500px;
  margin: 0 auto;
}

.newsletter-input {
  flex: 1;
  padding: 0.9rem 1.25rem;
  background: var(--dark-2);
  border: var(--border);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--font-main);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.newsletter-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.newsletter-input::placeholder { color: var(--text-muted); }

/* ============================================
   DEBATE / FORUM
   ============================================ */
.debate-topics {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.topic-card {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: var(--dark-3);
  border: var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  transition: var(--transition);
  cursor: pointer;
}

.topic-card:hover {
  border: var(--border-hover);
  transform: translateX(6px);
  background: var(--dark-4);
}

.topic-icon {
  font-size: 2rem;
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  background: rgba(0, 212, 255, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.topic-content { flex: 1; }

.topic-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.3rem;
}

.topic-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.topic-stats {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  flex-shrink: 0;
}

.topic-count {
  font-family: var(--font-code);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
}

.topic-stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

/* ============================================
   BRANDS / FABRICANTES
   ============================================ */
.brands-strip {
  padding: 3rem 0;
  overflow: hidden;
  background: var(--dark-2);
  border-top: var(--border);
  border-bottom: var(--border);
}

.brands-track {
  display: flex;
  gap: 3rem;
  align-items: center;
  animation: scroll-brands 25s linear infinite;
  width: max-content;
}

@keyframes scroll-brands {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.brand-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-code);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-muted);
  white-space: nowrap;
  padding: 0.75rem 1.5rem;
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 100px;
  transition: var(--transition);
  letter-spacing: 0.05em;
}

/* ============================================
   MODAL
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 10, 20, 0.92);
  backdrop-filter: blur(10px);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.modal-overlay.open { display: flex; }

.modal {
  background: var(--dark-3);
  border: var(--border);
  border-radius: var(--radius-lg);
  max-width: 700px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  animation: modal-in 0.3s ease;
}

@keyframes modal-in {
  from { opacity: 0; transform: scale(0.95) translateY(20px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 1.5rem 2rem;
  border-bottom: var(--border);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  padding: 0.25rem;
  line-height: 1;
}

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

.modal-body { padding: 2rem; }

.modal-img {
  width: 100%;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  max-height: 280px;
  object-fit: cover;
}

.modal-price {
  font-family: var(--font-code);
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.25rem;
}

.modal-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
  background: var(--dark-2);
  border-top: var(--border);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand { max-width: 320px; }

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-code);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 1rem;
}

.footer-logo .logo-icon-sm {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.footer-tagline {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.social-btn {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--dark-3);
  border: var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: var(--transition);
}

.social-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(0, 212, 255, 0.1);
}

.footer-col-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--text);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

.footer-bottom-links a {
  color: var(--text-muted);
  font-size: 0.82rem;
}

.footer-bottom-links a:hover { color: var(--primary); }

/* ============================================
   TOAST / NOTIFICACIONES
   ============================================ */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toast {
  background: var(--dark-3);
  border: var(--border);
  border-left: 4px solid var(--success);
  border-radius: var(--radius);
  padding: 1rem 1.5rem;
  min-width: 280px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: var(--shadow-card);
  animation: toast-in 0.3s ease;
  font-size: 0.9rem;
  color: var(--white);
}

.toast.error { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }

@keyframes toast-in {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}

/* ============================================
   LOADING / SKELETON
   ============================================ */
.skeleton {
  background: linear-gradient(90deg, var(--dark-3) 25%, var(--dark-4) 50%, var(--dark-3) 75%);
  background-size: 200% 100%;
  animation: skeleton-load 1.5s infinite;
  border-radius: var(--radius);
}

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

/* ============================================
   PAGE HEADER (páginas internas)
   ============================================ */
.page-hero {
  padding: 8rem 0 4rem;
  position: relative;
  overflow: hidden;
  text-align: center;
  background: linear-gradient(180deg, var(--dark-2) 0%, var(--dark) 100%);
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: 
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(0, 212, 255, 0.07) 0%, transparent 70%);
}

.page-hero-content { position: relative; z-index: 2; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb a { color: var(--primary); }
.breadcrumb span { color: var(--text-muted); }

/* ============================================
   COMENTARIOS FORM
   ============================================ */
.comment-form {
  background: var(--dark-3);
  border: var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-top: 2rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input, .form-textarea {
  width: 100%;
  padding: 0.9rem 1.25rem;
  background: var(--dark-2);
  border: var(--border);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--font-main);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
  resize: vertical;
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

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

/* ============================================
   UTILS
   ============================================ */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-muted { color: var(--text-muted); }
.text-white { color: var(--white); }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.mt-2 { margin-top: 1rem; }
.mt-4 { margin-top: 2rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 2rem; }

.divider {
  border: none;
  height: 1px;
  background: rgba(0, 212, 255, 0.1);
  margin: 2rem 0;
}

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

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1100px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .hero-container { grid-template-columns: 1fr; text-align: center; gap: 3rem; }
  .hero-subtitle { margin: 0 auto 2.5rem; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { display: none; }
  .float-card-1, .float-card-2 { display: none; }

  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--dark-2);
    border-bottom: var(--border);
    flex-direction: column;
    padding: 1.5rem 2rem;
    gap: 0.5rem;
    transform: translateY(-120%);
    transition: transform 0.3s ease;
    z-index: 999;
  }

  .nav-menu.open { transform: translateY(0); }
  .hamburger { display: flex; }

  .products-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
  .articles-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .section { padding: 4rem 0; }
  .container { padding: 0 1.25rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .newsletter-form { flex-direction: column; }
  .hero-actions { flex-direction: column; }
  .modal-actions { flex-direction: column; }
  .filter-bar { flex-direction: column; align-items: flex-start; }
  .search-wrap { margin-left: 0; width: 100%; }
  .search-input { width: 100%; }
}