:root {
  --primary-color: #4caf50;
  --secondary-color: #81c784;
  --bg-color: #ffffff;
  --text-color: #171717;
  --text-muted: #575757;
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.3);
  --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  --section-bg: #f8faf8;
  --font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Background Texture */
.grain-texture {
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.03;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

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

a:hover {
  color: var(--secondary-color);
}

/* Navigation - Multilevel */
.nav-container {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  padding: 0.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.menu-toggle-label {
  display: none;
  cursor: pointer;
  font-size: 1.5rem;
  color: var(--text-color);
}

#menu-toggle {
  display: none;
}

.main-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.menu-item {
  position: relative;
}

.menu-link {
  color: var(--text-color);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 1.25rem 0;
  display: block;
}

.submenu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--bg-color);
  box-shadow: var(--card-shadow);
  min-width: 240px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  list-style: none;
  border-radius: 12px;
  overflow: visible;
  padding: 0.5rem 0;
  border: 1px solid rgba(0,0,0,0.05);
}

.menu-item:hover > .submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Secondary Level Submenu */
.submenu .submenu {
  top: 0;
  left: 100%;
  transform: translateX(10px);
}

.submenu .menu-item:hover > .submenu {
  transform: translateX(0);
}

.submenu-item a {
  padding: 0.75rem 1.5rem;
  display: block;
  color: var(--text-color);
  font-size: 0.9rem;
}

.submenu-item a:hover {
  background: var(--section-bg);
  color: var(--primary-color);
  padding-left: 1.75rem;
}

/* Bento Grid Layout */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto;
  gap: 1.5rem;
  padding: 2rem 5%;
}

.bento-item {
  background: var(--bg-color);
  border-radius: 24px;
  padding: 2rem;
  border: 1px solid #f0f0f0;
  transition: var(--transition);
  display: flex; 
  flex-direction: column;
  justify-content: flex-end;
  position: relative;
  overflow: hidden;
}

.bento-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-shadow);
  border-color: var(--secondary-color);
}

.bento-large {
  grid-column: span 2;
  grid-row: span 2;
  background: linear-gradient(135deg, #f9fdf9 0%, #ffffff 100%);
}

.bento-medium {
  grid-column: span 2;
}

/* Buttons & Actions */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 0.95rem;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: var(--secondary-color);
  transform: scale(1.02);
  color: white;
}

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

.btn-outline:hover {
  background: var(--primary-color);
  color: white;
}

/* Product Cards */
.product-card {
  background: var(--bg-color);
  border-radius: 16px;
  padding: 1.5rem;
  text-align: center;
  transition: var(--transition);
}

.product-image-wrapper {
  background: var(--section-bg);
  border-radius: 12px;
  margin-bottom: 1.5rem;
  aspect-ratio: 1/1;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Footer - Minimalistic */
.site-footer {
  background: var(--section-bg);
  padding: 4rem 5% 2rem;
  margin-top: 4rem;
  border-top: 1px solid #eee;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-section h4 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

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

.footer-links li {
  margin-bottom: 0.75rem;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 3rem;
  margin-top: 3rem;
  border-top: 1px solid rgba(0,0,0,0.05);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Accents & Highlights */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--secondary-color);
  color: white;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
}

/* Responsive */
@media (max-width: 1024px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 992px) {
  .menu-toggle-label {
    display: block;
  }

  .main-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-color);
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-in-out;
    border-top: 1px solid #eee;
    box-shadow: var(--card-shadow);
  }

  #menu-toggle:checked ~ .main-menu {
    max-height: 100vh;
    overflow-y: auto;
    padding-bottom: 1rem;
  }

  .menu-link {
    padding: 1rem 5%;
    border-bottom: 1px solid #f5f5f5;
  }

  .submenu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    display: none;
    background: #f9f9f9;
    border: none;
    border-radius: 0;
    padding-left: 1rem;
    min-width: 100%;
  }

  .menu-item:hover > .submenu {
    display: block;
  }
}

@media (max-width: 768px) {
  .nav-container {
    padding: 0.5rem 1rem;
  }
  .bento-grid {
    grid-template-columns: 1fr;
  }
  .bento-large, .bento-medium {
    grid-column: span 1;
  }
}