/* ============================================
   NEXUSPC — style.css
   Dark Gaming Store Landing Page
   ============================================ */

/* ---- 1. CSS Custom Properties (Design Tokens) ---- */
:root {
  /* Colors */
  --clr-bg: #060912;
  --clr-bg-alt: #0b0f1e;
  --clr-bg-card: #0f1628;
  --clr-bg-card-hover: #141d36;
  --clr-border: rgba(255, 255, 255, 0.06);
  --clr-border-glow: rgba(0, 245, 255, 0.2);

  --clr-cyan: #00f5ff;
  --clr-cyan-dim: rgba(0, 245, 255, 0.15);
  --clr-cyan-glow: rgba(0, 245, 255, 0.35);
  --clr-purple: #7c3aed;
  --clr-purple-dim: rgba(124, 58, 237, 0.15);
  --clr-purple-glow: rgba(124, 58, 237, 0.35);
  --clr-green: #00c896;
  --clr-green-dim: rgba(0, 200, 150, 0.15);
  --clr-amber: #f59e0b;

  --clr-text-primary: #f0f4ff;
  --clr-text-secondary: #8b9cc8;
  --clr-text-muted: #4a5577;

  /* Gradients */
  --grad-hero: linear-gradient(135deg, #060912 0%, #0d1535 60%, #07112e 100%);
  --grad-cyan: linear-gradient(135deg, var(--clr-cyan) 0%, #0080ff 100%);
  --grad-purple: linear-gradient(135deg, var(--clr-purple) 0%, #4f46e5 100%);
  --grad-text: linear-gradient(90deg, var(--clr-cyan) 0%, var(--clr-purple) 50%, var(--clr-green) 100%);

  /* Typography */
  --ff-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-black: 900;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 5rem;

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 999px;

  /* Shadows */
  --shadow-card: 0 4px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow-cyan: 0 0 30px rgba(0, 245, 255, 0.15);
  --shadow-glow-purple: 0 0 30px rgba(124, 58, 237, 0.2);

  /* Transitions */
  --transition-fast: 0.18s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Layout */
  --container-max: 1280px;
  --header-h: 72px;
  --section-gap: 6rem;
}

/* ---- 2. Reset & Base ---- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  font-size: 16px;
}

body {
  font-family: var(--ff-sans);
  background-color: var(--clr-bg);
  color: var(--clr-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul {
  list-style: none;
}

input,
textarea,
select {
  font-family: inherit;
}

/* ---- 3. Layout Utilities ---- */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

.section {
  padding-block: var(--section-gap);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-cyan);
  background: var(--clr-cyan-dim);
  border: 1px solid rgba(0, 245, 255, 0.25);
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: var(--fw-black);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--clr-text-secondary);
  max-width: 52ch;
  margin-inline: auto;
}

/* ---- 4. Typography ---- */
.gradient-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200%;
  animation: shimmer 4s linear infinite;
}

@keyframes shimmer {
  0% {
    background-position: 0% 50%;
  }

  100% {
    background-position: 200% 50%;
  }
}

/* ---- 5. Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: var(--fw-semibold);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-base);
  position: relative;
  overflow: hidden;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

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

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--grad-cyan);
  color: #000;
  box-shadow: 0 4px 20px rgba(0, 245, 255, 0.3);
}

.btn--primary:hover {
  box-shadow: 0 6px 30px rgba(0, 245, 255, 0.5);
}

.btn--secondary {
  background: transparent;
  color: var(--clr-text-primary);
  border: 1.5px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
}

.btn--secondary:hover {
  border-color: var(--clr-cyan);
  color: var(--clr-cyan);
  box-shadow: 0 0 20px rgba(0, 245, 255, 0.15);
}

.btn--buy {
  flex: 1;
  justify-content: center;
  background: linear-gradient(135deg, var(--clr-purple) 0%, #4f46e5 100%);
  color: #fff;
  font-size: 0.88rem;
  padding: 0.6rem 1rem;
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.25);
}

.btn--buy:hover {
  box-shadow: 0 6px 25px rgba(124, 58, 237, 0.45);
}

.btn--outline {
  background: transparent;
  border: 1.5px solid var(--clr-border-glow);
  color: var(--clr-cyan);
}

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

.btn--full {
  width: 100%;
  justify-content: center;
}

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  border-radius: var(--radius-full);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--clr-border);
  color: var(--clr-text-secondary);
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
  position: relative;
}

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

/* ---- 6. Header ---- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  transition: background var(--transition-base), backdrop-filter var(--transition-base), box-shadow var(--transition-base);
}

.header.scrolled {
  background: rgba(6, 9, 18, 0.85);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06), 0 4px 32px rgba(0, 0, 0, 0.5);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.logo-text {
  font-size: 1.35rem;
  font-weight: var(--fw-black);
  letter-spacing: -0.03em;
}

.logo-accent {
  color: var(--clr-cyan);
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-left: auto;
}

.nav__link {
  padding: 0.45rem 0.85rem;
  font-size: 0.9rem;
  font-weight: var(--fw-medium);
  color: var(--clr-text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  position: relative;
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  right: 50%;
  height: 2px;
  background: var(--clr-cyan);
  border-radius: var(--radius-full);
  transition: left var(--transition-base), right var(--transition-base);
}

.nav__link:hover,
.nav__link.active {
  color: var(--clr-text-primary);
}

.nav__link:hover::after,
.nav__link.active::after {
  left: 10%;
  right: 10%;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-left: var(--space-md);
}

.cart-btn {
  position: relative;
}

.cart-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--clr-cyan);
  color: #000;
  font-size: 0.6rem;
  font-weight: var(--fw-bold);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--clr-border);
  padding: 8px;
  transition: border-color var(--transition-fast);
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--clr-text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-fast);
  transform-origin: center;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hamburger:hover {
  border-color: var(--clr-cyan);
}

/* ---- 7. Hero Section ---- */
.hero {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--grad-hero);
  padding-top: var(--header-h);
}

.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 245, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 245, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
  pointer-events: none;
}

.hero__particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--clr-cyan);
  opacity: 0;
  animation: float-particle linear infinite;
}

@keyframes float-particle {
  0% {
    opacity: 0;
    transform: translateY(0) scale(1);
  }

  10% {
    opacity: 0.8;
  }

  90% {
    opacity: 0.4;
  }

  100% {
    opacity: 0;
    transform: translateY(-100vh) scale(0.3);
  }
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  padding-block: 5rem;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: var(--fw-semibold);
  color: var(--clr-text-secondary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--clr-border);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-xl);
  animation: fadeInDown 0.6s ease backwards;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--clr-green);
  animation: pulse-dot 2s ease infinite;
  flex-shrink: 0;
}

@keyframes pulse-dot {

  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(0, 200, 150, 0.5);
  }

  50% {
    box-shadow: 0 0 0 6px rgba(0, 200, 150, 0);
  }
}

.hero__title {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: var(--fw-black);
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: var(--space-lg);
  animation: fadeInDown 0.6s 0.1s ease backwards;
}

.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--clr-text-secondary);
  max-width: 50ch;
  margin-bottom: var(--space-2xl);
  line-height: 1.7;
  animation: fadeInDown 0.6s 0.2s ease backwards;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-3xl);
  animation: fadeInDown 0.6s 0.3s ease backwards;
}

.hero__stats {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  animation: fadeInDown 0.6s 0.4s ease backwards;
}

.stat {
  text-align: left;
}

.stat__number {
  display: block;
  font-size: 1.6rem;
  font-weight: var(--fw-black);
  color: var(--clr-text-primary);
  letter-spacing: -0.02em;
}

.stat__label {
  font-size: 0.75rem;
  color: var(--clr-text-muted);
  font-weight: var(--fw-medium);
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--clr-border);
}

/* PC Illustration */
.hero__visual {
  position: absolute;
  right: max(0px, calc(50% - 700px));
  top: 50%;
  transform: translateY(-50%);
  z-index: 1;
  animation: fadeInRight 0.8s 0.3s ease backwards;
}

.pc-illustration {
  position: relative;
  width: 280px;
  height: 420px;
}

.pc-tower {
  position: relative;
  width: 200px;
  height: 380px;
  margin: auto;
}

.pc-glow {
  position: absolute;
  inset: -40px;
  background: radial-gradient(ellipse, rgba(0, 245, 255, 0.12) 0%, transparent 70%);
  animation: breathe 4s ease-in-out infinite;
}

@keyframes breathe {

  0%,
  100% {
    transform: scale(1);
    opacity: 0.8;
  }

  50% {
    transform: scale(1.15);
    opacity: 1;
  }
}

.pc-panel {
  width: 100%;
  height: 100%;
  background: linear-gradient(160deg, #0d1a2e, #050910);
  border-radius: 12px 12px 8px 8px;
  border: 1px solid rgba(0, 245, 255, 0.15);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.5),
    0 20px 60px rgba(0, 0, 0, 0.8),
    0 0 40px rgba(0, 245, 255, 0.08) inset;
  position: relative;
  overflow: hidden;
}

.pc-rgb-strip {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-cyan) 0%, var(--clr-purple) 50%, var(--clr-green) 100%);
  background-size: 200%;
  animation: rgb-shift 3s linear infinite;
}

@keyframes rgb-shift {
  0% {
    background-position: 0%;
  }

  100% {
    background-position: 200%;
  }
}

.pc-window {
  position: absolute;
  top: 20px;
  left: 20px;
  right: 20px;
  height: 280px;
  background: rgba(0, 0, 0, 0.4);
  border-radius: 6px;
  border: 1px solid rgba(0, 245, 255, 0.12);
  overflow: hidden;
}

.pc-internals {
  position: relative;
  width: 100%;
  height: 100%;
  padding: 10px;
}

.pc-motherboard {
  width: 100%;
  height: 100%;
  background:
    linear-gradient(rgba(0, 50, 80, 0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 50, 80, 0.3) 1px, transparent 1px);
  background-size: 12px 12px;
  border-radius: 4px;
  background-color: rgba(0, 15, 30, 0.8);
}

.pc-ram {
  position: absolute;
  top: 14px;
  right: 16px;
  width: 14px;
  height: 80px;
  background: linear-gradient(180deg, rgba(0, 245, 255, 0.5), rgba(0, 245, 255, 0.1));
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(0, 245, 255, 0.4);
  animation: ram-glow 2s ease-in-out infinite;
}

.pc-ram::before {
  content: '';
  position: absolute;
  left: 3px;
  top: 3px;
  right: 3px;
  height: 2px;
  background: rgba(0, 245, 255, 0.8);
  box-shadow: 0 8px 0 rgba(0, 245, 255, 0.8), 0 16px 0 rgba(0, 245, 255, 0.8), 0 24px 0 rgba(0, 245, 255, 0.8);
}

@keyframes ram-glow {

  0%,
  100% {
    box-shadow: 0 0 10px rgba(0, 245, 255, 0.4);
  }

  50% {
    box-shadow: 0 0 20px rgba(0, 245, 255, 0.7);
  }
}

.pc-gpu {
  position: absolute;
  bottom: 50px;
  left: 12px;
  right: 30px;
  height: 50px;
  background: linear-gradient(90deg, #0d1a35, #141f40);
  border: 1px solid rgba(124, 58, 237, 0.4);
  border-radius: 4px;
  box-shadow: 0 0 15px rgba(124, 58, 237, 0.3);
  animation: gpu-glow 3s ease-in-out infinite 1s;
}

.pc-gpu::after {
  content: '';
  position: absolute;
  top: 8px;
  left: 8px;
  width: 34px;
  height: 34px;
  background: rgba(124, 58, 237, 0.15);
  border: 1px solid rgba(124, 58, 237, 0.5);
  border-radius: 50%;
}

@keyframes gpu-glow {

  0%,
  100% {
    box-shadow: 0 0 15px rgba(124, 58, 237, 0.3);
  }

  50% {
    box-shadow: 0 0 30px rgba(124, 58, 237, 0.6);
  }
}

.pc-fan {
  position: absolute;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 1px solid rgba(0, 245, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.pc-fan::before {
  content: '';
  width: 40px;
  height: 40px;
  background: conic-gradient(transparent 0deg, rgba(0, 245, 255, 0.1) 60deg,
      transparent 120deg, rgba(0, 245, 255, 0.1) 180deg,
      transparent 240deg, rgba(0, 245, 255, 0.1) 300deg, transparent 360deg);
  border-radius: 50%;
  animation: spin-fan 2s linear infinite;
}

.pc-fan::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  background: rgba(0, 245, 255, 0.6);
  border-radius: 50%;
}

.fan1 {
  top: 20px;
  left: 14px;
}

.fan2 {
  top: 80px;
  left: 14px;
}

@keyframes spin-fan {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

.hero__scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  animation: fadeIn 1s 1s ease backwards;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--clr-text-muted), transparent);
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {

  0%,
  100% {
    transform: scaleY(1);
    opacity: 1;
  }

  50% {
    transform: scaleY(0.5);
    opacity: 0.3;
  }
}

/* ---- 8. Categories Section ---- */
.categories {
  background-color: var(--clr-bg-alt);
}

.categories__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.category-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.75rem;
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  overflow: hidden;
  cursor: pointer;
}

.category-card__glow {
  position: absolute;
  top: -50%;
  left: -20%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, var(--clr-cyan-dim) 0%, transparent 70%);
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

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

.category-card:hover {
  transform: translateY(-5px);
  border-color: var(--clr-border-glow);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(0, 245, 255, 0.1);
}

.category-card__icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: var(--clr-cyan-dim);
  border: 1px solid rgba(0, 245, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-cyan);
  margin-bottom: var(--space-lg);
  transition: background var(--transition-base), transform var(--transition-base);
}

.category-card:hover .category-card__icon {
  background: rgba(0, 245, 255, 0.2);
  transform: scale(1.1) rotate(-3deg);
}

.category-card__title {
  font-size: 1.1rem;
  font-weight: var(--fw-bold);
  margin-bottom: 0.4rem;
}

.category-card__desc {
  font-size: 0.85rem;
  color: var(--clr-text-secondary);
  flex: 1;
  margin-bottom: var(--space-md);
}

.category-card__count {
  font-size: 0.78rem;
  color: var(--clr-cyan);
  font-weight: var(--fw-semibold);
}

.category-card__arrow {
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%) translateX(0);
  font-size: 1.2rem;
  color: var(--clr-cyan);
  opacity: 0;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.category-card:hover .category-card__arrow {
  opacity: 1;
  transform: translateY(-50%) translateX(4px);
}

.category-card--highlight {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.12), rgba(0, 245, 255, 0.06));
  border-color: rgba(124, 58, 237, 0.25);
}

.category-card--highlight .category-card__icon {
  background: var(--clr-purple-dim);
  border-color: rgba(124, 58, 237, 0.3);
  color: var(--clr-purple);
}

.category-card--highlight .category-card__count {
  color: var(--clr-purple);
}

.category-card--highlight:hover {
  border-color: rgba(124, 58, 237, 0.5);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(124, 58, 237, 0.2);
}

/* ---- 9. Deals Section ---- */
.deals {
  background-color: var(--clr-bg);
}

.deals__tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: var(--fw-semibold);
  color: var(--clr-text-secondary);
  background: transparent;
  border: 1.5px solid var(--clr-border);
  transition: all var(--transition-fast);
}

.tab-btn.active,
.tab-btn:hover {
  color: var(--clr-text-primary);
  background: var(--clr-cyan-dim);
  border-color: var(--clr-cyan);
}

.products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.product-card {
  position: relative;
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.product-card:hover {
  transform: translateY(-6px);
  border-color: rgba(124, 58, 237, 0.35);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(124, 58, 237, 0.15);
}

.product-card__badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  z-index: 2;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: var(--fw-bold);
  letter-spacing: 0.05em;
  background: var(--clr-cyan);
  color: #000;
}

.product-card__badge--purple {
  background: var(--clr-purple);
  color: #fff;
}

.product-card__badge--green {
  background: var(--clr-green);
  color: #000;
}

.product-card__image {
  background: linear-gradient(135deg, #080e1f, #0c1428);
  display: flex;
  align-items: center;
  justify-content: center;
  height: 180px;
  border-bottom: 1px solid var(--clr-border);
  transition: background var(--transition-base);
}

.product-card:hover .product-card__image {
  background: linear-gradient(135deg, #0d1530, #101c38);
}

.product-img-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.85;
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.product-card:hover .product-img-placeholder {
  transform: scale(1.05);
  opacity: 1;
}

.product-card__body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-card__category {
  font-size: 0.72rem;
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-cyan);
  margin-bottom: 0.4rem;
}

.product-card__name {
  font-size: 1rem;
  font-weight: var(--fw-bold);
  line-height: 1.3;
  margin-bottom: 0.4rem;
}

.product-card__desc {
  font-size: 0.8rem;
  color: var(--clr-text-secondary);
  margin-bottom: var(--space-sm);
  flex: 1;
}

.product-card__rating {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: var(--space-md);
}

.stars {
  color: #f59e0b;
  font-size: 0.85rem;
}

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

.product-card__pricing {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: var(--space-md);
}

.price-old {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  text-decoration: line-through;
}

.price-current {
  font-size: 1.4rem;
  font-weight: var(--fw-black);
  color: var(--clr-text-primary);
  letter-spacing: -0.02em;
}

.price-badge {
  font-size: 0.72rem;
  font-weight: var(--fw-bold);
  background: rgba(0, 200, 150, 0.15);
  color: var(--clr-green);
  border: 1px solid rgba(0, 200, 150, 0.3);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-full);
}

.product-card__actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.wishlist-btn {
  border-color: var(--clr-border);
  width: 38px;
  height: 38px;
}

.wishlist-btn.active svg {
  fill: #ef4444;
  stroke: #ef4444;
}

.wishlist-btn:hover svg {
  fill: rgba(239, 68, 68, 0.3);
  stroke: #ef4444;
}

.deals__cta {
  text-align: center;
  margin-top: var(--space-3xl);
}

/* ---- 10. Why Choose Us ---- */
.why-us {
  background: var(--clr-bg-alt);
  position: relative;
  overflow: hidden;
}

.why-us__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 50%, rgba(0, 245, 255, 0.04) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 50%, rgba(124, 58, 237, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.why-us__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  position: relative;
}

.feature-card {
  padding: 2rem 1.5rem;
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--clr-border-glow);
  box-shadow: var(--shadow-glow-cyan);
}

.feature-card__icon-wrap {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: var(--clr-cyan-dim);
  border: 1px solid rgba(0, 245, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-cyan);
  margin-bottom: var(--space-lg);
  transition: transform var(--transition-base), background var(--transition-base);
}

.feature-card:hover .feature-card__icon-wrap {
  transform: scale(1.1);
  background: rgba(0, 245, 255, 0.2);
}

.feature-card__title {
  font-size: 1.05rem;
  font-weight: var(--fw-bold);
  margin-bottom: 0.5rem;
}

.feature-card__desc {
  font-size: 0.85rem;
  color: var(--clr-text-secondary);
  line-height: 1.65;
  margin-bottom: var(--space-lg);
}

.feature-card__stat {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.stat-highlight {
  font-size: 1.6rem;
  font-weight: var(--fw-black);
  color: var(--clr-cyan);
  letter-spacing: -0.05em;
}

.feature-card__stat span:last-child {
  font-size: 0.78rem;
  color: var(--clr-text-muted);
}

/* ---- 11. Testimonials Ticker ---- */
.testimonials {
  background: var(--clr-bg);
  padding-block: 0;
  border-block: 1px solid var(--clr-border);
  overflow: hidden;
}

.testimonials__ticker {
  position: relative;
}

.ticker-track {
  display: flex;
  gap: 4rem;
  padding-block: 1.25rem;
  white-space: nowrap;
  animation: ticker 35s linear infinite;
  width: max-content;
}

.ticker-item {
  font-size: 0.88rem;
  color: var(--clr-text-secondary);
  flex-shrink: 0;
}

.ticker-item strong {
  color: var(--clr-text-primary);
}

@keyframes ticker {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(-50%);
  }
}

.testimonials__ticker:hover .ticker-track {
  animation-play-state: paused;
}

/* ---- 12. Contact Section ---- */
.contact {
  background: var(--clr-bg);
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 5rem;
  align-items: start;
}

.contact__desc {
  color: var(--clr-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-2xl);
  font-size: 1rem;
}

.contact__channels {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-channel {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 1rem 1.25rem;
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.contact-channel:hover {
  border-color: var(--clr-border-glow);
  transform: translateX(4px);
}

.channel-icon {
  width: 42px;
  height: 42px;
  background: var(--clr-cyan-dim);
  border: 1px solid rgba(0, 245, 255, 0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-cyan);
  flex-shrink: 0;
}

.channel-label {
  display: block;
  font-size: 0.72rem;
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-text-muted);
}

.channel-value {
  display: block;
  font-size: 0.95rem;
  font-weight: var(--fw-medium);
  color: var(--clr-text-primary);
}

/* Contact Form */
.contact__form {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: var(--fw-semibold);
  color: var(--clr-text-secondary);
  letter-spacing: 0.03em;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: 1.5px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 0.8rem 1rem;
  color: var(--clr-text-primary);
  font-size: 0.92rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238b9cc8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-group select option {
  background: #0f1628;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--clr-cyan);
  box-shadow: 0 0 0 3px rgba(0, 245, 255, 0.1);
  background: rgba(0, 245, 255, 0.03);
}

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

textarea {
  resize: vertical;
  min-height: 120px;
}

.form-note {
  font-size: 0.78rem;
  color: var(--clr-text-muted);
  text-align: center;
}

/* ---- 13. Footer ---- */
.footer {
  background: #040609;
}

.footer__top {
  padding-block: var(--space-3xl);
}

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

.footer__tagline {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
  margin-block: var(--space-md) var(--space-xl);
  max-width: 32ch;
}

.footer__socials {
  display: flex;
  gap: 0.6rem;
}

.social-link {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-text-muted);
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.social-link:hover {
  color: var(--clr-cyan);
  border-color: var(--clr-cyan);
  background: var(--clr-cyan-dim);
}

.footer__heading {
  font-size: 0.8rem;
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--clr-text-secondary);
  margin-bottom: var(--space-lg);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer__links a {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: inline-block;
}

.footer__links a:hover {
  color: var(--clr-text-primary);
  transform: translateX(3px);
}

.footer__newsletter-desc {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.newsletter-form {
  display: flex;
  gap: 0.5rem;
  margin-bottom: var(--space-sm);
}

.newsletter-form input {
  flex: 1;
  min-width: 0;
  background: rgba(255, 255, 255, 0.04);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-full);
  padding: 0.6rem 1rem;
  color: var(--clr-text-primary);
  font-size: 0.85rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.newsletter-form input:focus {
  border-color: var(--clr-cyan);
}

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

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

.footer__bottom {
  border-top: 1px solid var(--clr-border);
  padding-block: var(--space-lg);
}

.footer__bottom-inner {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.footer__copy {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  flex: 1;
}

.footer__legal {
  display: flex;
  gap: var(--space-lg);
}

.footer__legal a {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  transition: color var(--transition-fast);
}

.footer__legal a:hover {
  color: var(--clr-text-secondary);
}

.footer__payments {
  display: flex;
  gap: 0.4rem;
}

.payment-badge {
  font-size: 0.65rem;
  font-weight: var(--fw-bold);
  letter-spacing: 0.05em;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--clr-border);
  border-radius: 4px;
  color: var(--clr-text-muted);
}

/* ---- 14. Toast ---- */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  min-width: 220px;
  padding: 1rem 1.5rem;
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border-glow);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  font-size: 0.9rem;
  color: var(--clr-text-primary);
  transform: translateY(110%) scale(0.95);
  opacity: 0;
  transition: transform var(--transition-base), opacity var(--transition-base);
  pointer-events: none;
}

.toast.show {
  transform: translateY(0) scale(1);
  opacity: 1;
}

/* ---- 15. Keyframes (shared) ---- */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateY(-50%) translateX(40px);
  }

  to {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

/* ---- 16. Responsive ---- */

/* Tablet (≤ 1024px) */
@media (max-width: 1024px) {
  :root {
    --section-gap: 4rem;
  }

  .categories__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .products__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .why-us__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .footer__brand {
    grid-column: 1 / -1;
  }

  .contact__inner {
    gap: 2.5rem;
  }

  .hero__visual {
    opacity: 0.3;
  }
}

/* Small Tablet (≤ 768px) */
@media (max-width: 768px) {
  :root {
    --section-gap: 3rem;
  }

  /* Nav */
  .nav__menu {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(6, 9, 18, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: stretch;
    padding: 1.5rem;
    gap: 0.25rem;
    transform: translateY(-110%);
    opacity: 0;
    transition: transform var(--transition-base), opacity var(--transition-base);
    border-bottom: 1px solid var(--clr-border);
    z-index: 99;
  }

  .nav__menu.open {
    transform: translateY(0);
    opacity: 1;
  }

  .nav__link {
    padding: 0.85rem 1rem;
    font-size: 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
  }

  .nav__link:hover,
  .nav__link.active {
    background: var(--clr-cyan-dim);
    border-color: rgba(0, 245, 255, 0.15);
  }

  .nav__link::after {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  /* Hero */
  .hero__visual {
    display: none;
  }

  .hero__content {
    max-width: 100%;
  }

  .hero__stats {
    flex-wrap: wrap;
    gap: 1rem;
  }

  /* Sections */
  .categories__grid {
    grid-template-columns: 1fr 1fr;
  }

  .products__grid {
    grid-template-columns: 1fr;
  }

  .why-us__grid {
    grid-template-columns: 1fr 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .contact__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer__bottom-inner {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }

  .footer__copy {
    flex: unset;
  }
}

/* Mobile (≤ 480px) */
@media (max-width: 480px) {
  :root {
    --section-gap: 2.5rem;
  }

  .categories__grid {
    grid-template-columns: 1fr;
  }

  .why-us__grid {
    grid-template-columns: 1fr;
  }

  .hero__cta {
    flex-direction: column;
  }

  .hero__cta .btn {
    justify-content: center;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .contact__form {
    padding: 1.5rem;
  }

  .toast {
    left: 1rem;
    right: 1rem;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}