/* ============================================
   ACOUSTIC PANEL INSTALLATION - FUTURISTIC DESIGN
   Vacuum-Sealed Laboratory Aesthetic
   ============================================ */

:root {
  /* Color Palette - Anti-Vibration Grid */
  --color-anechoic: #1A1A1D;
  --color-slate: #4E4E50;
  --color-amber: #FF9D00;
  --color-silver: #C0C0C0;
  --color-white: #FFFFFF;
  --color-dark: #0A0A0B;
  
  /* Typography */
  --font-primary: 'Space Mono', 'Courier New', monospace;
  --font-secondary: 'Inter', -apple-system, sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 4rem;
  
  /* Layout */
  --container-max: 1200px;
  --grid-gap: 1.5rem;
  
  /* Effects */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
  
  /* Glassmorphism */
  --glass-bg: rgba(26, 26, 29, 0.7);
  --glass-border: rgba(192, 192, 192, 0.2);
}

/* ============================================
   RESET & BASE
   ============================================ */

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

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

body {
  font-family: var(--font-secondary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-white);
  background-color: var(--color-anechoic);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-white);
  letter-spacing: -0.02em;
}

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);

}

p {
  margin-bottom: var(--space-md);
  color: white;
}

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

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

/* ============================================
   LAYOUT CONTAINERS
   ============================================ */

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

.section {
  padding: var(--space-xxl) 0;
  position: relative;
}

.section-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
  width: 100%;
}

/* ============================================
   HEADER
   ============================================ */

.site-header {
  position: relative;
  width: 100%;
  padding: var(--space-md) 0;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 1000;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.brand-text {
  font-family: var(--font-primary);
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-white);
}

/* Navigation */
.main-nav {
  display: flex;
  gap: 25px;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
  margin: 0;
  padding: 0;
}

.nav-link {
  font-family: var(--font-primary);
  font-size: 0.875rem;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-sm) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-amber);
  transition: width var(--transition-base);
}

.nav-link:hover {
  color: var(--color-amber);
}

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

/* Burger Menu */
.burger-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  color: var(--color-white);
  font-size: 1.5rem;
  z-index: 1001;
  transition: color var(--transition-fast);
  position: relative;
}

.burger-toggle:hover {
  color: var(--color-amber);
}

.burger-icon {
  display: block;
  width: 24px;
  height: 2px;
  background: currentColor;
  position: relative;
  transition: background var(--transition-fast);
}

.burger-icon::before,
.burger-icon::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  background: currentColor;
  left: 0;
  transition: transform var(--transition-base);
}

.burger-icon::before {
  top: -8px;
}

.burger-icon::after {
  bottom: -8px;
}

.burger-toggle.active .burger-icon {
  background: transparent;
}

.burger-toggle.active .burger-icon::before {
  transform: rotate(45deg) translate(5px, 5px);
}

.burger-toggle.active .burger-icon::after {
  transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 50px;
  left: 0;
  width: 100%;
  height: calc(100vh - 70px);
  background: var(--color-dark);
  z-index: 998;
  padding: var(--space-xxl) var(--space-md);
  overflow-y: auto;
  transform: translateX(-100%);
  transition: transform var(--transition-base);
  border-top: 1px solid var(--glass-border);
}

.mobile-nav.active {
  display: block;
  transform: translateX(0);
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-top: var(--space-xxl);
}

.mobile-nav-link {
  font-family: var(--font-primary);
  font-size: 1.25rem;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--glass-border);
  transition: color var(--transition-fast);
}

.mobile-nav-link:hover {
  color: var(--color-amber);
}

/* ============================================
   HERO BANNERS (Full-Width)
   ============================================ */

.hero-banner {
  width: 100vw;
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-left: calc(-50vw + 50%);
  margin-right: calc(-50vw + 50%);
}

.banner-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  opacity: 0.3;
}

.banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(26, 26, 29, 0.8) 0%,
    rgba(26, 26, 29, 0.6) 50%,
    rgba(26, 26, 29, 0.9) 100%
  );
  z-index: 2;
}

.banner-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  max-width: 800px;
  margin: 0 auto;
}

.banner-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: var(--space-md);
  text-shadow: 0 2px 20px rgba(255, 157, 0, 0.3);
}

.banner-text {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-white);
  margin-bottom: var(--space-lg);
}

/* ============================================
   GRID SYSTEM
   ============================================ */

.grid {
  display: grid;
  gap: var(--grid-gap);
  width: 100%;
  max-width: 100%;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  justify-items: center;
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  justify-items: center;
}

.grid-item {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  max-width: 100%;
  text-align: center;
}

.grid-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-amber);
}

.grid-item h3 {
  text-align: center;
  margin-top: var(--space-sm);
}

.grid-item p {
  text-align: center;
}

.grid-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
  display: block;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-primary);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-white);
  background: transparent;
  border: 1px solid var(--color-amber);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
  margin-top: 10px;
}

.btn:hover {
  background: var(--color-amber);
  color: var(--color-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 157, 0, 0.3);
}

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

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

/* ============================================
   FORMS
   ============================================ */

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

.form-label {
  display: block;
  font-family: var(--font-primary);
  font-size: 0.875rem;
  color: var(--color-white);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  font-family: var(--font-secondary);
  font-size: 1rem;
  color: var(--color-white);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-amber);
}

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

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

.checkbox-input {
  margin-top: 4px;
  cursor: pointer;
}

.checkbox-label {
  font-size: 0.875rem;
  color: var(--color-white);
  line-height: 1.5;
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
  background: var(--color-dark);
  border-top: 1px solid var(--glass-border);
  padding: var(--space-xl) 0 var(--space-lg);
  margin-top: var(--space-xxl);
}

.footer-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.footer-link {
  font-family: var(--font-primary);
  font-size: 0.75rem;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
}

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

.footer-info {
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-white);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--glass-border);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-center {
  text-align: center;
}

.mb-sm {
  margin-bottom: var(--space-sm);
}

.mb-md {
  margin-bottom: var(--space-md);
}

.mb-sm {
  margin-bottom: var(--space-sm);
}

.mb-md {
  margin-bottom: var(--space-md);
}

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

.mb-xl {
  margin-bottom: var(--space-xl);
}

.mt-lg {
  margin-top: var(--space-lg);
}

.mt-xl {
  margin-top: var(--space-xl);
}

.text-slate {
  color: var(--color-slate);
}

.max-width-text {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.max-width-form {
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.max-width-cta {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.banner-medium {
  min-height: 400px;
  margin-bottom: var(--space-xl);
}

.banner-small {
  min-height: 350px;
  margin-bottom: var(--space-xl);
}

/* ============================================
   ANTI-VIBRATION GRID EFFECT
   ============================================ */

.grid-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  opacity: 0.1;
  background-image: 
    linear-gradient(var(--color-silver) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-silver) 1px, transparent 1px);
  background-size: 50px 50px;
  transition: transform var(--transition-slow);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1023px) {
  .main-nav {
    display: none;
  }
  
  .burger-toggle {
    display: block;
  }
  
  .header-container {
    position: relative;
  }
}

@media (max-width: 768px) {
  :root {
    --space-xl: 2rem;
    --space-xxl: 3rem;
  }
  
  .section {
    padding: var(--space-xl) 0;
  }
  
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .hero-banner {
    min-height: 50vh;
  }
  
  .banner-content {
    padding: var(--space-lg) var(--space-md);
  }
}

@media (max-width: 480px) {
  :root {
    --space-md: 0.75rem;
    --space-lg: 1.5rem;
  }
  
  .container,
  .section-content {
    padding: 0 var(--space-sm);
  }
  
  .grid-item {
    padding: var(--space-md);
  }
}

@media (max-width: 320px) {
  html {
    font-size: 14px;
  }
  
  .section {
    padding: var(--space-lg) 0;
  }
}

/* ============================================
   PRIVACY POLICY POPUP
   ============================================ */

.privacy-popup {
  display: none;
  position: fixed;
  bottom: var(--space-md);
  right: var(--space-md);
  max-width: 400px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  z-index: 2000;
  box-shadow: var(--shadow-lg);
}

.privacy-popup.active {
  display: block;
}

.privacy-popup-content {
  margin-bottom: var(--space-md);
}

.privacy-popup-title {
  font-size: 1rem;
  margin-bottom: var(--space-sm);
}

.privacy-popup-text {
  font-size: 0.875rem;
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.privacy-popup-buttons {
  display: flex;
  gap: var(--space-sm);
}

.privacy-popup-btn {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
}

/* ============================================
   PRODUCT CARDS
   ============================================ */

.product-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-amber);
  box-shadow: var(--shadow-lg);
}

.product-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
  display: block;
}

.product-title {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
  color: var(--color-white);
}

.product-description {
  color: var(--color-white);
  margin-bottom: var(--space-md);
  line-height: 1.6;
}

.product-price {
  font-family: var(--font-primary);
  font-size: 1.25rem;
  color: var(--color-amber);
  margin-bottom: var(--space-md);
}

/* ============================================
   MAP CONTAINER
   ============================================ */

.map-container {
  width: 100%;
  height: 400px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  margin: var(--space-lg) 0;
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ============================================
   CONTACT INFO
   ============================================ */

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-lg) 0;
}

.contact-item {
  padding: var(--space-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
}

.contact-item-title {
  font-size: 1rem;
  color: var(--color-amber);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-item-text {
  color: var(--color-white);
  font-size: 0.875rem;
}

/* ============================================
   THANK YOU PAGE
   ============================================ */

.thank-you-container {
  max-width: 600px;
  margin: var(--space-xxl) auto;
  text-align: center;
  padding: var(--space-xl);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
}

.thank-you-title {
  color: var(--color-amber);
  margin-bottom: var(--space-md);
}

.thank-you-text {
  color: var(--color-white);
  font-size: 1.125rem;
  line-height: 1.8;
}

/* ============================================
   ERROR 404 PAGE
   ============================================ */

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

.error-code {
  font-size: clamp(4rem, 10vw, 8rem);
  color: var(--color-amber);
  font-family: var(--font-primary);
  margin-bottom: var(--space-md);
}

.error-message {
  font-size: 1.5rem;
  color: var(--color-white);
  margin-bottom: var(--space-lg);
}

/* ============================================
   LEGAL PAGES STYLING
   ============================================ */

.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

.legal-section {
  margin-bottom: var(--space-xl);
}

.legal-section h2 {
  color: var(--color-amber);
  margin-bottom: var(--space-md);
  font-size: 1.75rem;
}

.legal-section h3 {
  color: var(--color-white);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  font-size: 1.25rem;
}

.legal-section p {
  color: var(--color-white);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.legal-section ul {
  margin-left: var(--space-lg);
  margin-bottom: var(--space-md);
  color: var(--color-white);
}

.legal-section li {
  margin-bottom: var(--space-sm);
  line-height: 1.6;
}

.date {
  font-family: var(--font-primary);
  color: var(--color-amber);
  font-size: 0.875rem;
  margin-top: var(--space-lg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}