/* ==========================================================================
   VORTEX PADEL - Estilos de la Landing Page (Vanilla CSS)
   Diseño de Alta Gama: Modo Oscuro, Neón Cian, Vidrio Esmerilado & Micro-animaciones
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. VARIABLES DE TEMA & CONFIGURACIÓN BASE
   -------------------------------------------------------------------------- */
:root {
  --color-bg-main: #07090e;
  --color-bg-card: #0e121b;
  --color-bg-card-hover: #151b27;
  --color-bg-glass: rgba(14, 18, 27, 0.75);
  
  --color-primary: #00f0ff;
  --color-primary-glow: rgba(0, 240, 255, 0.35);
  --color-secondary: #ffb703;
  --color-secondary-glow: rgba(255, 183, 3, 0.3);
  --color-accent: #7000ff;
  
  --color-text-main: #f0f4f8;
  --color-text-muted: #94a3b8;
  --color-text-dark: #07090e;
  
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-glow: rgba(0, 240, 255, 0.4);
  
  --font-heading: 'Space Grotesk', 'Outfit', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  --container-max: 1240px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--color-bg-main);
  color: var(--color-text-main);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  line-height: 1.6;
}

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

button, input, select {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --------------------------------------------------------------------------
   2. ANNOUNCEMENT BAR & HEADER / NAVIGATION
   -------------------------------------------------------------------------- */
.top-bar {
  background: linear-gradient(90deg, #050b14, #003644, #050b14);
  border-bottom: 1px solid rgba(0, 240, 255, 0.2);
  text-align: center;
  padding: 0.6rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-primary);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
}

.top-bar .badge {
  background: var(--color-secondary);
  color: var(--color-text-dark);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
}

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-fast);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: #fff;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  color: #000;
  font-weight: 900;
  box-shadow: 0 0 15px var(--color-primary-glow);
}

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

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: var(--transition-fast);
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: #fff;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition-fast);
  border-radius: 2px;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.cart-trigger-btn {
  position: relative;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  color: #fff;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.cart-trigger-btn:hover {
  background: rgba(0, 240, 255, 0.1);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.cart-badge-count {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--color-primary);
  color: #000;
  font-size: 0.75rem;
  font-weight: 800;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), #00a8ff);
  color: #000;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: var(--transition-normal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  box-shadow: 0 4px 20px var(--color-primary-glow);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 30px rgba(0, 240, 255, 0.5);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--color-border-glow);
  color: #fff;
  font-weight: 600;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition-normal);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-secondary:hover {
  background: rgba(0, 240, 255, 0.08);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
}

/* --------------------------------------------------------------------------
   3. HERO SECTION
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  padding: 4rem 0 6rem 0;
  overflow: hidden;
}

.hero-background-glow {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-primary-glow) 0%, rgba(112, 0, 255, 0.15) 50%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 3rem;
  position: relative;
  z-index: 1;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid var(--color-border-glow);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.8rem;
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  background: linear-gradient(180deg, #ffffff 40%, var(--color-text-muted) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--color-primary), #00a8ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  max-width: 520px;
}

.hero-features-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.feature-pill {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-main);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.feature-pill svg {
  color: var(--color-primary);
}

.hero-price-box {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2rem;
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary);
  width: 100%;
  max-width: 480px;
}

.current-price {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 900;
  color: #fff;
}

.old-price {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.discount-tag {
  background: var(--color-secondary);
  color: #000;
  font-weight: 800;
  font-size: 0.8rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.installment-text {
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 600;
  display: block;
  margin-top: 0.2rem;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
  width: 100%;
}

.guarantees-row {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
  width: 100%;
}

.guarantee-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.guarantee-item svg {
  color: var(--color-primary);
}

/* Showcase de Imagen en Hero */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  perspective: 1000px;
}

.hero-image-wrapper {
  position: relative;
  width: 100%;
  max-width: 480px;
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  background: radial-gradient(circle at center, rgba(0, 240, 255, 0.1) 0%, transparent 70%);
  transition: transform 0.1s ease-out;
  transform-style: preserve-3d;
}

.hero-racket-img {
  width: 100%;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.7)) drop-shadow(0 0 25px rgba(0, 240, 255, 0.3));
  transition: transform 0.3s ease;
  transform: translateZ(30px);
}

.hero-image-wrapper:hover .hero-racket-img {
  transform: translateZ(50px) scale(1.03);
}

/* Floating Badges */
.floating-badge {
  position: absolute;
  background: var(--color-bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-border-glow);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 10;
  animation: floatAnim 4s ease-in-out infinite alternate;
}

.floating-badge-1 {
  top: 10%;
  left: -5%;
}

.floating-badge-2 {
  bottom: 12%;
  right: -5%;
  animation-delay: 2s;
}

.badge-icon-box {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(0, 240, 255, 0.15);
  color: var(--color-primary);
  display: grid;
  place-items: center;
}

.badge-title {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  font-weight: 600;
}

.badge-value {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 800;
  color: #fff;
}

@keyframes floatAnim {
  0% { transform: translateY(0px) translateZ(40px); }
  100% { transform: translateY(-12px) translateZ(40px); }
}

/* --------------------------------------------------------------------------
   4. SECTION HEADERS REUSABLES
   -------------------------------------------------------------------------- */
.section-padding {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 4rem auto;
}

.section-subtitle {
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
  display: block;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1.15;
  color: #fff;
  margin-bottom: 1rem;
}

.section-description {
  font-size: 1.05rem;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   5. ANATOMY & INTERACTIVE HOTSPOTS SECTION
   -------------------------------------------------------------------------- */
.anatomy-section {
  background: linear-gradient(180deg, var(--color-bg-main) 0%, #0a0e17 100%);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.anatomy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hotspot-viewer {
  position: relative;
  background: radial-gradient(circle at center, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--color-border);
}

.hotspot-viewer img {
  width: 100%;
  margin: 0 auto;
  border-radius: var(--radius-md);
}

.hotspot-point {
  position: absolute;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(0, 240, 255, 0.4);
  border: 2px solid var(--color-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000;
  font-weight: 800;
  font-size: 0.85rem;
  transition: var(--transition-fast);
  box-shadow: 0 0 15px var(--color-primary-glow);
  z-index: 20;
}

.hotspot-point::before {
  content: '';
  position: absolute;
  top: -6px;
  left: -6px;
  right: -6px;
  bottom: -6px;
  border-radius: 50%;
  border: 1px solid var(--color-primary);
  animation: pulseRipple 2s infinite;
}

.hotspot-point.active, .hotspot-point:hover {
  background: var(--color-primary);
  transform: scale(1.25);
  box-shadow: 0 0 25px var(--color-primary);
}

@keyframes pulseRipple {
  0% { transform: scale(0.8); opacity: 1; }
  100% { transform: scale(1.6); opacity: 0; }
}

/* Hotspot coordinates */
.hp-1 { top: 22%; left: 32%; }
.hp-2 { top: 48%; left: 55%; }
.hp-3 { top: 68%; left: 42%; }
.hp-4 { top: 82%; left: 48%; }

.hotspot-details-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-glow);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  position: relative;
  overflow: hidden;
}

.hotspot-details-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-primary);
}

.tech-tag {
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
  display: block;
}

.tech-title {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: #fff;
  margin-bottom: 1rem;
}

.tech-desc {
  color: var(--color-text-muted);
  font-size: 1rem;
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.tech-stats-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-primary);
}

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

/* --------------------------------------------------------------------------
   6. TECH SPECS & PERFORMANCE RADAR BARS
   -------------------------------------------------------------------------- */
.specs-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3.5rem;
  align-items: center;
}

.performance-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.metric-group {
  margin-bottom: 1.75rem;
}

.metric-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.metric-title {
  color: #fff;
  font-size: 0.95rem;
}

.metric-val {
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 800;
}

.metric-bar-bg {
  width: 100%;
  height: 10px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.metric-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #00a8ff, var(--color-primary));
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 0 10px var(--color-primary-glow);
}

.specs-table-wrapper {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
}

.specs-table tr {
  border-bottom: 1px solid var(--color-border);
}

.specs-table tr:last-child {
  border-bottom: none;
}

.specs-table td {
  padding: 1.1rem 1.5rem;
  font-size: 0.95rem;
}

.specs-table td:first-child {
  color: var(--color-text-muted);
  font-weight: 600;
  width: 40%;
  background: rgba(255, 255, 255, 0.015);
}

.specs-table td:last-child {
  color: #fff;
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   7. COMBOS & BUNDLES SELECTOR
   -------------------------------------------------------------------------- */
.combos-section {
  background: linear-gradient(180deg, #0a0e17 0%, var(--color-bg-main) 100%);
  position: relative;
}

.bundles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  align-items: stretch;
}

.bundle-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition-normal);
}

.bundle-card:hover {
  transform: translateY(-8px);
  border-color: rgba(255, 255, 255, 0.2);
}

.bundle-card.popular {
  border: 2px solid var(--color-primary);
  background: linear-gradient(180deg, #111a28 0%, var(--color-bg-card) 100%);
  box-shadow: 0 0 35px rgba(0, 240, 255, 0.15);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-primary), #00a8ff);
  color: #000;
  font-weight: 900;
  font-size: 0.75rem;
  padding: 0.3rem 1.2rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: 0 4px 15px var(--color-primary-glow);
}

.bundle-header {
  text-align: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.bundle-name {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: #fff;
  margin-bottom: 0.5rem;
}

.bundle-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  min-height: 40px;
}

.bundle-img-container {
  height: 200px;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bundle-img-container img {
  max-height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 10px 20px rgba(0,0,0,0.5));
}

.bundle-price-box {
  text-align: center;
  margin-bottom: 1.75rem;
}

.bundle-price {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 900;
  color: #fff;
}

.bundle-savings {
  color: var(--color-secondary);
  font-size: 0.85rem;
  font-weight: 700;
}

.bundle-features {
  list-style: none;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.bundle-features li {
  font-size: 0.9rem;
  color: var(--color-text-main);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.bundle-features li svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   8. TESTIMONIALS & REVIEWS
   -------------------------------------------------------------------------- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.review-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stars-row {
  color: var(--color-secondary);
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1rem;
}

.review-text {
  font-size: 0.95rem;
  color: var(--color-text-main);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.reviewer-profile {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.reviewer-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary-glow);
  border: 2px solid var(--color-primary);
  display: grid;
  place-items: center;
  font-weight: 800;
  color: var(--color-primary);
}

.reviewer-name {
  font-weight: 700;
  color: #fff;
  font-size: 0.95rem;
}

.reviewer-role {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   9. FAQ ACCORDION
   -------------------------------------------------------------------------- */
.faq-wrapper {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: var(--transition-fast);
}

.faq-item.active {
  border-color: var(--color-border-glow);
}

.faq-question {
  width: 100%;
  padding: 1.3rem 1.5rem;
  background: none;
  border: none;
  color: #fff;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.faq-icon {
  width: 24px;
  height: 24px;
  transition: transform var(--transition-fast);
  color: var(--color-primary);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out, padding 0.35s ease-out;
  padding: 0 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  padding-bottom: 1.5rem;
}

/* --------------------------------------------------------------------------
   10. SHOPPING CART DRAWER & MODAL
   -------------------------------------------------------------------------- */
.cart-drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.cart-drawer-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  max-width: 440px;
  height: 100%;
  background: var(--color-bg-card);
  border-left: 1px solid var(--color-border);
  z-index: 2001;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.cart-drawer-overlay.active .cart-drawer {
  transform: translateX(0);
}

.cart-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cart-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.close-cart-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.close-cart-btn:hover {
  color: #fff;
}

.cart-body {
  padding: 1.5rem;
  flex-grow: 1;
  overflow-y: auto;
}

.cart-items-list {
  display: flex;
  flex-direction: flex-column;
  gap: 1.25rem;
}

.cart-item {
  display: flex;
  gap: 1rem;
  background: rgba(255, 255, 255, 0.02);
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.cart-item-img {
  width: 70px;
  height: 70px;
  object-fit: contain;
  background: #000;
  border-radius: var(--radius-sm);
  padding: 0.25rem;
}

.cart-item-info {
  flex-grow: 1;
}

.cart-item-title {
  font-weight: 700;
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.cart-item-price {
  color: var(--color-primary);
  font-weight: 800;
  font-size: 0.9rem;
}

.cart-item-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.qty-btn {
  width: 26px;
  height: 26px;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: #fff;
  border-radius: 4px;
  cursor: pointer;
}

.qty-btn:hover {
  background: var(--color-primary);
  color: #000;
}

.cart-footer {
  padding: 1.5rem;
  border-top: 1px solid var(--color-border);
  background: rgba(0, 0, 0, 0.2);
}

.cart-total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1.25rem;
}

.cart-total-price {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  color: var(--color-primary);
}

.coupon-input-group {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.coupon-input {
  flex-grow: 1;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.8rem;
  color: #fff;
  font-size: 0.85rem;
  text-transform: uppercase;
}

.coupon-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--color-border);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  left: 2rem;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toast {
  background: var(--color-bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-border-glow);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #fff;
  font-size: 0.85rem;
  animation: slideToast 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 340px;
}

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

/* Modal Checkout */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  z-index: 4000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.checkout-modal {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-glow);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 540px;
  padding: 2.5rem;
  text-align: center;
  box-shadow: 0 25px 50px rgba(0,0,0,0.7);
  transform: scale(0.9);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .checkout-modal {
  transform: scale(1);
}

.success-icon {
  width: 70px;
  height: 70px;
  background: rgba(0, 240, 255, 0.15);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  display: grid;
  place-items: center;
  margin: 0 auto 1.5rem auto;
  color: var(--color-primary);
  font-size: 2rem;
}

/* --------------------------------------------------------------------------
   11. FOOTER
   -------------------------------------------------------------------------- */
.footer {
  background: #040609;
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 2rem 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  margin-top: 1rem;
  max-width: 300px;
  line-height: 1.6;
}

.footer-title {
  color: #fff;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.6rem;
}

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

.newsletter-form {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

.newsletter-input {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.8rem;
  color: #fff;
  font-size: 0.85rem;
  width: 100%;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* --------------------------------------------------------------------------
   12. MEDIA QUERIES (RESPONSIVE)
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-title { font-size: 3rem; }
  .bundles-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .reviews-grid { grid-template-columns: 1fr; }
  .anatomy-grid { grid-template-columns: 1fr; }
  .specs-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-menu { display: none; }
  .mobile-toggle { display: block; }
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-content { align-items: center; }
  .hero-title { font-size: 2.4rem; }
  .hero-cta-group { flex-direction: column; width: 100%; }
  .btn-primary, .btn-secondary { width: 100%; }
  .floating-badge-1, .floating-badge-2 { display: none; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
}