/* ============================================
   SONIC NEO-NOIR DESIGN SYSTEM
   Home Cinema Calibration Website
   ============================================ */

:root {
  /* Color Palette */
  --color-deep-space: #050505;
  --color-sonic-blue: #00A3FF;
  --color-signal-amber: #FFB800;
  --color-anodized-silver: #C0C0C0;
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #E0E0E0;
  --color-text-muted: #A0A0A0;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 4rem;
  
  /* Typography */
  --font-display: 'Orbitron', 'Rajdhani', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Borders & Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --border-thin: 1px solid var(--color-anodized-silver);
  
  /* Shadows & Glows */
  --glow-blue: 0 0 20px rgba(0, 163, 255, 0.5);
  --glow-amber: 0 0 15px rgba(255, 184, 0, 0.4);
  --shadow-deep: 0 10px 40px rgba(0, 0, 0, 0.8);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Layout */
  --max-width-content: 1200px;
  --header-height: 80px;
}

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

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

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

body {
  font-family: var(--font-body);
  background-color: var(--color-deep-space);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

a:hover {
  color: var(--color-sonic-blue);
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  letter-spacing: 0.05em;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

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

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.site-header {
  position: relative;
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: rgba(5, 5, 5, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: var(--border-thin);
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: nowrap;
}

.brand-text {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 700;
  color: var(--color-sonic-blue);
  text-shadow: var(--glow-blue);
}

.main-navigation {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  list-style: none;
}

.main-navigation a {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid transparent;
  transition: all var(--transition-normal);
  position: relative;
}

.main-navigation a:hover {
  color: var(--color-sonic-blue);
  border-color: var(--color-sonic-blue);
  box-shadow: var(--glow-blue);
}

.burger-toggle {
  display: none;
  background: transparent;
  border: var(--border-thin);
  color: var(--color-text-primary);
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  font-size: 1.5rem;
  transition: all var(--transition-fast);
  margin-left: auto;
  flex-shrink: 0;
  z-index: 10000001;
}

.burger-toggle:hover {
  border-color: var(--color-sonic-blue);
  color: var(--color-sonic-blue);
  box-shadow: var(--glow-blue);
}

.burger-toggle.active {
  border-color: var(--color-signal-amber);
  color: var(--color-signal-amber);
}

/* Mobile Navigation Overlay - Hidden by default */
.mobile-nav-overlay {
  display: none;
}

/* Desktop: Show regular nav, hide mobile nav */
@media (min-width: 1024px) {
  .mobile-nav-overlay {
    display: none !important;
  }
  
  .site-header nav {
    display: block;
  }
  
  .burger-toggle {
    display: none;
  }
}

/* Mobile Navigation */
@media (max-width: 1023px) {
  .burger-toggle {
    display: block;
  }
  
  .site-header nav {
    display: none;
  }
  
  .mobile-nav-overlay {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(5, 5, 5, 0.98);
    backdrop-filter: blur(15px);
    z-index: 998;
    transform: translateX(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }
  
  .mobile-nav-overlay.active {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
  }
  
  .mobile-nav-overlay .main-navigation {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    flex-direction: column;
    gap: var(--space-lg);
    align-items: center;
    list-style: none;
    width: 100%;
    padding: var(--space-xl);
  }
  
  .mobile-nav-overlay .main-navigation a {
    font-size: 1.1rem;
    text-align: center;
    padding: var(--space-md) var(--space-xl);
    width: auto;
    min-width: 200px;
  }
}

/* ============================================
   HERO / BANNER SECTIONS
   ============================================ */

.hero-banner {
  position: relative;
  width: 100vw;
  min-height: 70vh;
  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(5, 5, 5, 0.7) 0%,
    rgba(5, 5, 5, 0.9) 100%
  );
  z-index: 2;
}

.banner-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: var(--space-xl);
  max-width: 900px;
  margin: 0 auto;
}

.banner-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: var(--space-lg);
  text-shadow: 0 0 30px rgba(0, 163, 255, 0.8);
  animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% {
    text-shadow: 0 0 30px rgba(0, 163, 255, 0.8);
  }
  50% {
    text-shadow: 0 0 50px rgba(0, 163, 255, 1);
  }
}

.banner-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

/* Frequency Visualizer Effect */
.frequency-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
  opacity: 0.4;
}

/* ============================================
   MAIN CONTENT AREA
   ============================================ */

.main-content {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

.content-section {
  margin-bottom: var(--space-xxl);
  padding: var(--space-xl) 0;
  text-align: center;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-xl);
  color: var(--color-sonic-blue);
  text-shadow: var(--glow-blue);
  position: relative;
  padding-bottom: var(--space-md);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-sonic-blue), transparent);
  box-shadow: var(--glow-blue);
}

/* ============================================
   GRID LAYOUTS
   ============================================ */

.grid-container {
  display: grid;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  justify-items: center;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.grid-two {
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.grid-three {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-item {
  background: rgba(192, 192, 192, 0.05);
  border: var(--border-thin);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition-normal);
  backdrop-filter: blur(5px);
  text-align: center;
  max-width: 500px;
  width: 100%;
}

.grid-item:hover {
  border-color: var(--color-sonic-blue);
  box-shadow: var(--glow-blue);
  transform: translateY(-5px);
}

.grid-item-image {
  width: 100%;
  max-width: 400px;
  height: 250px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin: 0 auto var(--space-md);
  border: var(--border-thin);
  display: block;
}

.grid-item-title {
  color: var(--color-signal-amber);
  margin-bottom: var(--space-sm);
  font-size: 1.25rem;
}

.grid-item-text {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ============================================
   CARDS & FEATURES
   ============================================ */

.feature-card {
  background: rgba(192, 192, 192, 0.03);
  border: var(--border-thin);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-normal);
  max-width: 400px;
  width: 100%;
  margin: 0 auto;
}

.feature-card:hover {
  background: rgba(192, 192, 192, 0.08);
  border-color: var(--color-sonic-blue);
  box-shadow: var(--glow-blue);
}

.feature-icon {
  font-size: 3rem;
  color: var(--color-sonic-blue);
  margin-bottom: var(--space-md);
  text-shadow: var(--glow-blue);
}

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

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

.contact-form {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--space-xl);
  background: rgba(192, 192, 192, 0.05);
  border: var(--border-thin);
  border-radius: var(--radius-lg);
}

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

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  background: rgba(5, 5, 5, 0.8);
  border: var(--border-thin);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-sonic-blue);
  box-shadow: var(--glow-blue);
}

.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: 0.25rem;
  cursor: pointer;
}

.checkbox-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.submit-button {
  width: 100%;
  padding: var(--space-md) var(--space-xl);
  background: transparent;
  border: 2px solid var(--color-sonic-blue);
  border-radius: var(--radius-md);
  color: var(--color-sonic-blue);
  font-family: var(--font-display);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--glow-blue);
  margin-top: 10px;
}

.submit-button:hover {
  background: var(--color-sonic-blue);
  color: var(--color-deep-space);
  box-shadow: 0 0 30px rgba(0, 163, 255, 0.8);
  transform: translateY(-2px);
}

.submit-button:active {
  transform: translateY(0);
}

/* ============================================
   GOOGLE MAPS
   ============================================ */

.map-container {
  width: 100%;
  height: 400px;
  margin: var(--space-xl) 0;
  border: var(--border-thin);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-deep);
}

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

/* ============================================
   PRODUCTS
   ============================================ */

.product-card {
  background: rgba(192, 192, 192, 0.05);
  border: var(--border-thin);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: all var(--transition-normal);
  max-width: 400px;
  width: 100%;
  margin: 0 auto;
}

.product-card:hover {
  border-color: var(--color-signal-amber);
  box-shadow: var(--glow-amber);
  transform: translateY(-5px);
}

.product-image {
  width: 100%;
  max-width: 350px;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin: 0 auto var(--space-md);
  border: var(--border-thin);
  display: block;
}

.product-title {
  color: var(--color-sonic-blue);
  margin-bottom: var(--space-sm);
}

.product-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
}

.product-price {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-signal-amber);
  font-weight: 700;
  text-shadow: var(--glow-amber);
}

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

.site-footer {
  background: rgba(5, 5, 5, 0.95);
  border-top: var(--border-thin);
  padding: var(--space-xl) var(--space-lg);
  margin-top: var(--space-xxl);
}

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

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

.footer-title {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--color-sonic-blue);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

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

.footer-menu li {
  margin-bottom: var(--space-sm);
}

.footer-menu a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer-menu a:hover {
  color: var(--color-sonic-blue);
}

.footer-info {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.footer-copyright {
  text-align: center;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: var(--border-thin);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

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

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

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

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

.highlight-amber {
  color: var(--color-signal-amber);
}

.highlight-blue {
  color: var(--color-sonic-blue);
}

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

.privacy-popup {
  position: fixed;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  max-width: 600px;
  width: calc(100% - 2rem);
  background: rgba(5, 5, 5, 0.98);
  border: var(--border-thin);
  border-color: var(--color-sonic-blue);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--glow-blue);
  z-index: 10000;
  display: none;
}

.privacy-popup.active {
  display: block;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from {
    transform: translateX(-50%) translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
  }
}

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

.privacy-popup-title {
  font-family: var(--font-display);
  color: var(--color-sonic-blue);
  margin-bottom: var(--space-sm);
  font-size: 1.1rem;
}

.privacy-popup-text {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.privacy-popup-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: flex-end;
}

.privacy-button {
  padding: var(--space-sm) var(--space-lg);
  border: var(--border-thin);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-text-primary);
  cursor: pointer;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all var(--transition-fast);
}

.privacy-button.accept {
  border-color: var(--color-sonic-blue);
  color: var(--color-sonic-blue);
}

.privacy-button.accept:hover {
  background: var(--color-sonic-blue);
  color: var(--color-deep-space);
  box-shadow: var(--glow-blue);
}

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

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

@media (max-width: 480px) {
  .banner-title {
    font-size: 2rem;
  }
  
  .grid-item,
  .feature-card,
  .product-card {
    padding: var(--space-md);
  }
  
  .privacy-popup {
    width: calc(100% - 1rem);
    padding: var(--space-md);
  }
}

@media (max-width: 320px) {
  html {
    font-size: 14px;
  }
  
  .site-header {
    padding: var(--space-sm);
  }
  
  .main-content {
    padding: var(--space-md) var(--space-sm);
  }
}

/* ============================================
   ANIMATIONS & EFFECTS
   ============================================ */

@keyframes scan-line {
  0% {
    transform: translateY(-100%);
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: translateY(100vh);
    opacity: 0;
  }
}

.scan-animation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-sonic-blue), transparent);
  box-shadow: 0 0 20px var(--color-sonic-blue);
  z-index: 10001;
  animation: scan-line 2s ease-in-out;
  pointer-events: none;
}

/* Loading States */
.loading {
  opacity: 0.5;
  pointer-events: none;
}

/* Smooth Scroll */
html {
  scroll-padding-top: var(--header-height);
}