/* Custom Properties */
:root {
  /* Colors */
  --color-primary: #9333ea;
  --color-primary-hover: #7e22ce;
  --color-bg: #111827;
  --color-bg-secondary: #1f2937;
  --color-text: #ffffff;
  --color-text-secondary: #9ca3af;
  --color-border: rgba(147, 51, 234, 0.2);
  --color-nav-bg: rgba(17, 24, 39, 0.75);
  --color-nav-border: rgba(255, 255, 255, 0.1);
  --color-nav-shadow: rgba(0, 0, 0, 0.1);
  --color-nav-gradient: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.08) 0%,
    rgba(255, 255, 255, 0.03) 100%
  );

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

  /* Container */
  --container-max-width: 1280px;
  --container-padding: 1rem;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  overflow-x: hidden;
}

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

/* Container */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--color-nav-bg);
  background-image: var(--color-nav-gradient);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-nav-border);
  box-shadow: 0 4px 30px var(--color-nav-shadow);
  z-index: 1000;
}

.header__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4rem;
  position: relative;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  position: relative;
  z-index: 2;
}

.header__logo-icon {
  width: 2rem;
  height: 2rem;
  color: var(--color-primary);
  filter: drop-shadow(0 0 8px rgba(147, 51, 234, 0.3));
}

.header__logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  color: #ffffff;
  text-decoration: none;
}

/* Navigation */
.nav__menu {
  display: flex;
  gap: var(--spacing-xl);
  list-style: none;
}

.nav__link {
  color: var(--color-text);
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
  padding: var(--spacing-xs) 0;
  font-weight: 500;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-fast);
}

.nav__link:hover {
  color: var(--color-primary);
}

.nav__link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav__toggle {
  display: none;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 4rem;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-image: url('https://images.unsplash.com/photo-1538481199705-c710c4e965fc?ixlib=rb-1.2.1&auto=format&fit=crop&w=1950&q=80');
  background-size: cover;
  background-position: center;
  filter: brightness(0.3);
  z-index: 0;
}

.hero__container {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.75rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

.hero__subtitle {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  color: var(--color-text-secondary);
  max-width: 36rem;
  margin: 0 auto var(--spacing-xl);
}

/* Products Section */
.products {
  padding: var(--spacing-xl) 0;
  background-color: var(--color-bg-secondary);
}

.products__title {
  font-size: 2rem;
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.products__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

/* Product Card */
.product-card {
  background-color: var(--color-bg);
  border-radius: 0.5rem;
  overflow: hidden;
  transition: transform var(--transition-normal);
  text-decoration: none;
}

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

.product-card__image-container {
  height: 12rem;
  overflow: hidden;
}

.product-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-card__content {
  padding: var(--spacing-md);
}

.product-card__header {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.product-card__icon {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--color-primary);
}

.product-card__title {
  font-size: 1.25rem;
  font-weight: 600;
  color: #ffffff;
}

.product-card__description {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.product-card__price {
  color: var(--color-primary);
  font-weight: 600;
}

/* Contact Section */
.contact {
  padding: var(--spacing-xl) 0;
}

.contact__wrapper {
  max-width: 32rem;
  margin: 0 auto;
}

.contact__title {
  font-size: 2rem;
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

/* Form */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group__label {
  display: block;
  font-size: 0.875rem;
  margin-bottom: var(--spacing-xs);
}

.form-group__input {
  width: 100%;
  padding: var(--spacing-sm);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  color: var(--color-text);
  transition: border-color var(--transition-fast);
}

.form-group__input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-group__input--textarea {
  resize: vertical;
  min-height: 8rem;
}

/* Button */
.button {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 9999px;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-normal);
}

.button--primary {
  background-color: var(--color-primary);
  color: var(--color-text);
}

.button--primary:hover {
  background-color: var(--color-primary-hover);
  transform: scale(1.05);
}

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

.button--animated {
  animation: pulse 2s infinite;
}

.button--animated:hover {
  animation: none;
}

/* Footer */
.footer {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-lg) 0;
}

.footer__container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.footer__logo-icon {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--color-primary);
}

.footer__social {
  display: flex;
  gap: var(--spacing-md);
}

.footer__social-link {
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.footer__social-link:hover {
  color: var(--color-primary);
}

.footer__copyright {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  text-decoration: none;
}

/* Animations */
@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(147, 51, 234, 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(147, 51, 234, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(147, 51, 234, 0);
  }
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav__toggle {
    display: block;
    width: 2rem;
    height: 2rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    position: relative;
    z-index: 2;
  }

  .nav__toggle-bar {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    transition: var(--transition-fast);
    position: absolute;
    left: 0;
  }

  .nav__toggle-bar:nth-child(1) { top: 25%; }
  .nav__toggle-bar:nth-child(2) { top: 50%; }
  .nav__toggle-bar:nth-child(3) { top: 75%; }

  .nav__toggle--active .nav__toggle-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .nav__toggle--active .nav__toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .nav__toggle--active .nav__toggle-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .nav__menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--color-nav-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-md);
    flex-direction: column;
    gap: var(--spacing-sm);
    display: none;
    border-top: 1px solid var(--color-nav-border);
    box-shadow: 0 4px 30px var(--color-nav-shadow);
  }

  .nav__menu--active {
    display: flex;
  }

  .nav__link {
    display: block;
    padding: var(--spacing-sm);
  }
}

/* Responsive Adjustments */
@media (min-width: 768px) {
  .footer__container {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (max-width: 640px) {
  .products__grid {
    grid-template-columns: 1fr;
  }

  .hero__title {
    font-size: 2rem;
  }

  .hero__subtitle {
    font-size: 1.125rem;
  }

  .header {
    background-color: var(--color-nav-bg);
  }
}