:root {
  --color-ice-blue: #EAF6FF;
  --color-pearl-white: #FFFFFF;
  --color-soft-aqua: #CDEFF1;
  --color-mist-gray: #F4F7F8;
  --color-glass-white: rgba(255, 255, 255, 0.35);
  --color-glass-blue: rgba(220, 240, 255, 0.3);
  --color-crystal-teal: #4ECFD6;
  --color-rose-quartz: #F2B5C4;
  --color-chrome-silver: #C7CCD1;
  --color-charcoal: #2A2A2A;
  --color-soft-gray: #6F7A80;
  --font-primary: 'Poppins', sans-serif;
  --font-secondary: 'Inter', sans-serif;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-xxl: 3rem;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 50%;
  --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-float: 0 12px 40px rgba(0, 0, 0, 0.15);
  --blur-light: blur(10px);
  --blur-medium: blur(20px);
  --blur-heavy: blur(30px);
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  font-family: var(--font-secondary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-charcoal);
  background: linear-gradient(135deg, var(--color-ice-blue) 0%, var(--color-pearl-white) 50%, var(--color-soft-aqua) 100%);
  background-attachment: fixed;
  overflow-x: hidden;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--color-charcoal);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--space-lg);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  margin-bottom: var(--space-md);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  margin-bottom: var(--space-md);
}

a {
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-normal);
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: all var(--transition-normal);
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--color-glass-white);
  backdrop-filter: var(--blur-medium);
  -webkit-backdrop-filter: var(--blur-medium);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  transition: transform var(--transition-slow), opacity var(--transition-slow);
  transform: translateY(0);
  opacity: 1;
}

.site-header.hidden {
  transform: translateY(-100%);
  opacity: 0;
}

.header-inner {
  position: relative;
  padding: var(--space-md) var(--space-lg);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.logo-text {
  font-family: var(--font-primary);
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: 500;
  color: var(--color-charcoal);
  letter-spacing: 0.05em;
}

.nav-menu {
  display: flex;
  gap: var(--space-xl);
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  color: var(--color-charcoal);
  position: relative;
  padding: var(--space-xs) 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-crystal-teal);
  transition: width var(--transition-normal);
}

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

.burger-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  height: 14px;
  padding: 0;
  background: transparent;
  margin-left: var(--space-lg);
}

.burger-line {
  width: 100%;
  height: 2px;
  background: var(--color-charcoal);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

.burger-toggle.active .burger-line:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

.burger-toggle.active .burger-line:nth-child(2) {
  opacity: 0;
}

.burger-toggle.active .burger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

.mobile-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #FFFFFF;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  z-index: 998;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), opacity var(--transition-slow);
  opacity: 0;
}

.mobile-menu.active {
  max-height: 500px;
  opacity: 1;
}

.mobile-nav {
  list-style: none;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: var(--space-md) 0;
}

.mobile-nav-link {
  font-size: 1.1rem;
  font-family: var(--font-primary);
  color: var(--color-charcoal);
  padding: var(--space-md) var(--space-lg);
  display: block;
  transition: all var(--transition-normal);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-nav-link:hover {
  color: var(--color-crystal-teal);
  transform: scale(1.1);
}

main {
  margin-top: 80px;
  min-height: calc(100vh - 160px);
}

.hero-section {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-ice-blue) 0%, var(--color-pearl-white) 30%, var(--color-soft-aqua) 100%);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: var(--space-xxl) var(--space-lg);
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(234, 246, 255, 0.85) 0%, rgba(255, 255, 255, 0.75) 30%, rgba(205, 239, 241, 0.85) 100%);
  z-index: 1;
}

.hero-content {
  max-width: 1200px;
  width: 100%;
  text-align: center;
  z-index: 2;
  position: relative;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  margin-bottom: var(--space-lg);
  background: linear-gradient(135deg, var(--color-charcoal) 0%, var(--color-soft-gray) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--color-soft-gray);
  margin-bottom: var(--space-xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-image {
  max-width: 800px;
  margin: var(--space-xxl) auto 0;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-float);
  overflow: hidden;
  backdrop-filter: var(--blur-light);
  -webkit-backdrop-filter: var(--blur-light);
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

.btn-primary {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  background: var(--color-glass-white);
  backdrop-filter: var(--blur-medium);
  -webkit-backdrop-filter: var(--blur-medium);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  color: var(--color-charcoal);
  font-size: 1rem;
  font-weight: 500;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: var(--radius-full);
  background: rgba(78, 207, 214, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
  border-color: var(--color-crystal-teal);
}

.section {
  padding: var(--space-xxl) var(--space-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-xxl);
}

.glass-card {
  background: var(--color-glass-white);
  backdrop-filter: var(--blur-medium);
  -webkit-backdrop-filter: var(--blur-medium);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  box-shadow: var(--shadow-soft);
  transition: all var(--transition-normal);
}

.glass-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
  backdrop-filter: var(--blur-light);
  -webkit-backdrop-filter: var(--blur-light);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.product-card {
  background: var(--color-glass-white);
  backdrop-filter: var(--blur-medium);
  -webkit-backdrop-filter: var(--blur-medium);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-soft);
}

.product-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-float);
}

.product-image {
  width: 100%;
  height: 300px;
  object-fit: cover;
  display: block;
}

.product-info {
  padding: var(--space-lg);
}

.product-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--color-charcoal);
}

.product-price {
  font-size: 1.1rem;
  color: var(--color-crystal-teal);
  font-weight: 600;
}

.gradient-background {
  background: linear-gradient(135deg, var(--color-ice-blue) 0%, var(--color-pearl-white) 50%, var(--color-soft-aqua) 100%);
  padding: var(--space-xxl) var(--space-lg);
  border-radius: var(--radius-lg);
  margin: var(--space-xl) 0;
}

.category-bubble {
  display: inline-block;
  padding: var(--space-lg) var(--space-xl);
  background: var(--color-glass-blue);
  backdrop-filter: var(--blur-medium);
  -webkit-backdrop-filter: var(--blur-medium);
  border-radius: var(--radius-full);
  margin: var(--space-md);
  transition: all var(--transition-slow);
  cursor: pointer;
  box-shadow: var(--shadow-soft);
}

.category-bubble:hover {
  transform: scale(1.15);
  backdrop-filter: var(--blur-light);
  -webkit-backdrop-filter: var(--blur-light);
  box-shadow: var(--shadow-medium);
}

.bubble-container {
  text-align: center;
  padding: var(--space-xxl) var(--space-lg);
  scroll-snap-type: y proximity;
}

.bubble-section {
  scroll-snap-align: start;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xxl);
}

.parallax-container {
  position: relative;
  overflow: hidden;
  min-height: 500px;
  border-radius: var(--radius-lg);
}

.parallax-image {
  width: 100%;
  height: 600px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.frame-container {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-float);
  margin: var(--space-xl) 0;
}

.frame-image {
  width: 100%;
  height: auto;
  display: block;
}

.product-tag {
  position: absolute;
  background: var(--color-glass-white);
  backdrop-filter: var(--blur-medium);
  -webkit-backdrop-filter: var(--blur-medium);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}

.frame-container:hover .product-tag {
  opacity: 1;
}

.material-card {
  background: var(--color-glass-white);
  backdrop-filter: var(--blur-medium);
  -webkit-backdrop-filter: var(--blur-medium);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  margin: var(--space-lg);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.material-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: rotate(45deg);
  transition: all var(--transition-slow);
  opacity: 0;
}

.material-card:hover::before {
  opacity: 1;
  animation: shine 1s ease;
}

@keyframes shine {
  0% {
    transform: translateX(-100%) translateY(-100%) rotate(45deg);
  }
  100% {
    transform: translateX(100%) translateY(100%) rotate(45deg);
  }
}

.material-card:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-float);
}

.comparison-slider {
  position: relative;
  max-width: 800px;
  margin: var(--space-xxl) auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-float);
}

.slider-container {
  display: flex;
  transition: transform var(--transition-slow);
}

.slider-image {
  min-width: 100%;
  height: 400px;
  object-fit: cover;
}

.contact-form-container {
  max-width: 600px;
  margin: var(--space-xxl) auto;
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--color-charcoal);
  font-weight: 500;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  background: var(--color-glass-white);
  backdrop-filter: var(--blur-light);
  -webkit-backdrop-filter: var(--blur-light);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  font-size: 1rem;
  color: var(--color-charcoal);
  transition: all var(--transition-normal);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-crystal-teal);
  box-shadow: 0 0 0 3px rgba(78, 207, 214, 0.1);
  backdrop-filter: var(--blur-medium);
  -webkit-backdrop-filter: var(--blur-medium);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin: var(--space-lg) 0;
}

.checkbox-input {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  cursor: pointer;
}

.error-message {
  color: #d32f2f;
  font-size: 0.875rem;
  margin-top: var(--space-xs);
  display: none;
}

.error-message.show {
  display: block;
}

.map-container {
  margin: var(--space-xxl) 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
}

.map-iframe {
  width: 100%;
  height: 450px;
  border: 0;
  display: block;
}

.site-footer {
  background: var(--color-glass-white);
  backdrop-filter: var(--blur-medium);
  -webkit-backdrop-filter: var(--blur-medium);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding: var(--space-xl) var(--space-lg);
  margin-top: var(--space-xxl);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-menu {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  list-style: none;
  flex-wrap: wrap;
  margin-bottom: var(--space-md);
}

.footer-link {
  font-size: 0.9rem;
  color: var(--color-soft-gray);
  transition: color var(--transition-normal);
}

.footer-link:hover {
  color: var(--color-crystal-teal);
}

.footer-copyright {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-soft-gray);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.privacy-popup {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  max-width: 400px;
  background: var(--color-glass-white);
  backdrop-filter: var(--blur-heavy);
  -webkit-backdrop-filter: var(--blur-heavy);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-float);
  z-index: 2000;
  transform: translateY(150%);
  transition: transform var(--transition-slow);
}

.privacy-popup.show {
  transform: translateY(0);
}

.popup-close {
  float: right;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-soft-gray);
  transition: color var(--transition-normal);
}

.popup-close:hover {
  color: var(--color-charcoal);
}

.ripple-effect {
  position: absolute;
  border-radius: var(--radius-full);
  background: rgba(78, 207, 214, 0.3);
  transform: scale(0);
  animation: ripple var(--transition-slow);
  pointer-events: none;
}

@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

.thank-you-container {
  max-width: 600px;
  margin: var(--space-xxl) auto;
  text-align: center;
  padding: var(--space-xxl);
}

.thank-you-icon {
  font-size: 4rem;
  color: var(--color-crystal-teal);
  margin-bottom: var(--space-lg);
}

.error-404-container {
  max-width: 600px;
  margin: var(--space-xxl) auto;
  text-align: center;
  padding: var(--space-xxl);
}

.error-404-title {
  font-size: 8rem;
  color: var(--color-crystal-teal);
  margin-bottom: var(--space-lg);
  opacity: 0.5;
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .section {
    padding: var(--space-lg) var(--space-md);
  }

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

  .hero-section {
    min-height: 70vh;
    padding: var(--space-lg) var(--space-md);
  }

  .footer-menu {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .privacy-popup {
    max-width: calc(100% - var(--space-xl));
    right: var(--space-md);
    bottom: var(--space-md);
  }

  .category-bubble {
    padding: var(--space-md) var(--space-lg);
    font-size: 0.9rem;
  }

  .bubble-section {
    min-height: 80vh;
    padding: var(--space-lg);
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .site-header {
    padding: var(--space-sm) var(--space-md);
  }

  .section {
    padding: var(--space-md) var(--space-sm);
  }

  .error-404-title {
    font-size: 5rem;
  }
}