/* ============================================
   FREQUENCY CORE - Podcast Production Studio
   Futuristic Design System
   ============================================ */

:root {
  /* Colors - The Frequency Core Palette */
  --color-silence: #020205;
  --color-signal: #00FFF0;
  --color-gain: #FF0055;
  --color-surface: rgba(2, 2, 5, 0.8);
  --color-glass: rgba(0, 255, 240, 0.1);
  --color-glass-border: rgba(0, 255, 240, 0.3);
  --color-text-primary: #ffffff;
  --color-text-secondary: rgba(255, 255, 255, 0.7);
  --color-text-muted: rgba(255, 255, 255, 0.5);

  /* Typography */
  --font-heading: 'Orbitron', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Borders & Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(0, 255, 240, 0.3);
  --shadow-gain: 0 0 20px rgba(255, 0, 85, 0.4);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Layout */
  --header-height: 80px;
  --max-width: 1400px;
}

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

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

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

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-silence);
  overflow-x: hidden;
  position: relative;
}

/* Vocal Horizon Background - Animated Waveform */
body::before {
  content: '';
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 120px;
  background: linear-gradient(
    to top,
    rgba(0, 255, 240, 0.1) 0%,
    rgba(0, 255, 240, 0.05) 50%,
    transparent 100%
  );
  background-image: 
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 2px,
      rgba(0, 255, 240, 0.1) 2px,
      rgba(0, 255, 240, 0.1) 4px
    );
  pointer-events: none;
  z-index: 1;
  animation: waveform 3s ease-in-out infinite;
}

@keyframes waveform {
  0%, 100% { opacity: 0.3; transform: translateY(0); }
  50% { opacity: 0.6; transform: translateY(-10px); }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  letter-spacing: 0.02em;
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

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

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

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

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

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

.site-header {
  position: relative;
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-glass-border);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.header-brand {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-signal);
  text-shadow: 0 0 10px rgba(0, 255, 240, 0.5);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 15px;
  list-style: none;
}

.header-nav a {
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  position: relative;
}

.header-nav a::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--color-signal);
  transition: width var(--transition-base);
}

.header-nav a:hover::before {
  width: 80%;
}

.header-nav a:hover {
  color: var(--color-signal);
  background: var(--color-glass);
}

/* Burger Menu Button - Always Last in Header */
.burger-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-md);
  width: 44px;
  height: 44px;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  z-index: 1000001;
  padding: var(--space-sm);
  transition: all var(--transition-base);
  order: 999;
}

.burger-toggle:hover {
  background: var(--color-glass);
  border-color: var(--color-signal);
}

.burger-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-signal);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.burger-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

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

.burger-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Navigation Menu */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  background: var(--color-surface);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-glass-border);
  padding: var(--space-lg);
  z-index: 999;
  transform: translateY(-100%);
  opacity: 0;
  transition: all var(--transition-base);
}

.mobile-nav.active {
  transform: translateY(0);
  opacity: 1;
}

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

.mobile-nav-list a {
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  display: block;
  transition: all var(--transition-base);
  border: 1px solid transparent;
}

.mobile-nav-list a:hover {
  color: var(--color-signal);
  background: var(--color-glass);
  border-color: var(--color-glass-border);
}

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

main {
  position: relative;
  z-index: 10;
  min-height: calc(100vh - var(--header-height) - 200px);
}

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

.hero-banner {
  position: relative;
  width: 100vw;
  margin-left: calc(-50vw + 50%);
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-silence) 0%, rgba(0, 255, 240, 0.05) 100%);
}

.hero-banner-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  opacity: 0.25;
}

.hero-banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  max-width: var(--max-width);
  width: 100%;
  background: rgba(2, 2, 5, 0.6);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  margin: 0 auto;
}

.hero-banner-content h1 {
  font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
  margin-bottom: var(--space-lg);
  text-shadow: 0 0 30px rgba(0, 255, 240, 0.5);
  animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { text-shadow: 0 0 30px rgba(0, 255, 240, 0.5); }
  50% { text-shadow: 0 0 50px rgba(0, 255, 240, 0.8); }
}

.hero-banner-content p {
  font-size: clamp(var(--font-size-base), 2vw, var(--font-size-xl));
  color: var(--color-text-secondary);
  max-width: 800px;
  margin: 0 auto;
}

/* ============================================
   SECTIONS
   ============================================ */

.content-section {
  padding: var(--space-4xl) var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
  width: 100%;
  max-width: 900px;
}

.section-header h2 {
  color: var(--color-signal);
  margin-bottom: var(--space-md);
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--color-gain);
  border-radius: var(--radius-full);
}

.section-header p {
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

/* Grid Layouts */
.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
  width: 100%;
  max-width: 1200px;
  justify-items: center;
}

.grid-item {
  background: var(--color-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  max-width: 400px;
  width: 100%;
  text-align: center;
}

.grid-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 255, 240, 0.1), transparent);
  transition: left 0.5s ease;
}

.grid-item:hover::before {
  left: 100%;
}

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

.grid-item-image {
  width: 100%;
  max-width: 400px;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin: 0 auto var(--space-md);
  display: block;
}

.grid-item h3 {
  color: var(--color-signal);
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-xl);
}

.grid-item p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

/* Two Column Layout */
.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
  margin-top: var(--space-2xl);
  width: 100%;
  max-width: 1200px;
}

.two-column-image {
  width: 100%;
  max-width: 600px;
  height: 350px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-glass-border);
  margin: 0 auto;
  display: block;
}

.two-column-content h3 {
  color: var(--color-signal);
  margin-bottom: var(--space-md);
  text-align: left;
}

.two-column-content p {
  text-align: left;
}

/* ============================================
   FLOATING SOUND DAMPENERS
   ============================================ */

.floating-element {
  position: absolute;
  width: 120px;
  height: 120px;
  background: var(--color-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  opacity: 0.3;
  pointer-events: none;
  animation: float 6s ease-in-out infinite;
}

.floating-element:nth-child(1) {
  top: 10%;
  left: 5%;
  animation-delay: 0s;
}

.floating-element:nth-child(2) {
  top: 60%;
  right: 10%;
  animation-delay: 2s;
}

.floating-element:nth-child(3) {
  bottom: 20%;
  left: 15%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(5deg); }
}

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

.form-container {
  max-width: 600px;
  margin: var(--space-3xl) auto;
  background: var(--color-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
}

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

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-md);
  background: rgba(2, 2, 5, 0.6);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-signal);
  box-shadow: 0 0 0 3px rgba(0, 255, 240, 0.1);
}

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

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

.checkbox-group input[type="checkbox"] {
  width: auto;
  margin-top: 4px;
  cursor: pointer;
}

.checkbox-group label {
  margin-bottom: 0;
  text-transform: none;
  font-size: var(--font-size-sm);
  cursor: pointer;
}

.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  background: var(--color-signal);
  color: var(--color-silence);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: var(--font-size-base);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
  margin-top: 10px;
  box-shadow: var(--shadow-glow);
}

.btn:hover {
  background: var(--color-gain);
  transform: translateY(-2px);
  color: white;
  box-shadow: var(--shadow-gain);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--color-signal);
  color: var(--color-signal);
  box-shadow: none;
}

.btn-secondary:hover {
  background: var(--color-signal);
  color: var(--color-silence);
}

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

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
  width: 100%;
  max-width: 1200px;
  justify-items: center;
}

.product-card {
  background: var(--color-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-base);
  max-width: 400px;
  width: 100%;
  margin: 0 auto;
}

.product-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-signal);
  box-shadow: var(--shadow-glow);
}

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

.product-title {
  color: var(--color-signal);
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-xl);
}

.product-description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-md);
  min-height: 60px;
}

.product-price {
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  color: var(--color-gain);
  font-weight: 700;
}

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

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

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

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

.site-footer {
  background: var(--color-surface);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--color-glass-border);
  padding: var(--space-2xl) var(--space-lg);
  margin-top: var(--space-4xl);
}

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

.footer-section h4 {
  color: var(--color-signal);
  margin-bottom: var(--space-md);
  font-size: var(--font-size-lg);
}

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

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

.footer-nav a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  transition: color var(--transition-base);
}

.footer-nav a:hover {
  color: var(--color-signal);
}

.footer-contact {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.8;
}

.footer-copyright {
  text-align: center;
  padding-top: var(--space-xl);
  margin-top: var(--space-xl);
  border-top: 1px solid var(--color-glass-border);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

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

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

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

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

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }

.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); }
.mb-2xl { margin-bottom: var(--space-2xl); }

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

@media (max-width: 1023px) {
  .header-nav {
    display: none;
  }

  .burger-toggle {
    display: flex;
  }

  .mobile-nav {
    display: block;
  }

  .two-column {
    grid-template-columns: 1fr;
  }

  .two-column-image {
    height: 300px;
  }

  .grid-container {
    grid-template-columns: 1fr;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
  }

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

  .header-brand {
    font-size: var(--font-size-lg);
  }

  .content-section {
    padding: var(--space-2xl) var(--space-md);
  }

  .hero-banner {
    min-height: 50vh;
  }

  .hero-banner-content {
    padding: var(--space-xl) var(--space-md);
  }

  .form-container {
    padding: var(--space-lg);
    margin: var(--space-xl) var(--space-md);
  }

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

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

  .hero-banner {
    min-height: 40vh;
  }

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

  .grid-item,
  .product-card {
    padding: var(--space-md);
  }
}

@media (max-width: 320px) {
  html {
    font-size: 12px;
  }

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

  .header-brand {
    font-size: var(--font-size-base);
  }

  .burger-toggle {
    width: 36px;
    height: 36px;
  }

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

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

.privacy-popup {
  position: fixed;
  bottom: var(--space-lg);
  left: var(--space-lg);
  right: var(--space-lg);
  max-width: 500px;
  background: var(--color-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  z-index: 10000;
  box-shadow: var(--shadow-lg);
  transform: translateY(150%);
  transition: transform var(--transition-slow);
}

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

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

.privacy-popup-content p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

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

.privacy-popup-actions .btn {
  flex: 1;
  min-width: 120px;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
}

/* ============================================
   ERROR PAGES
   ============================================ */

.error-container {
  text-align: center;
  padding: var(--space-4xl) var(--space-lg);
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.error-code {
  font-size: clamp(4rem, 10vw, 8rem);
  font-family: var(--font-heading);
  color: var(--color-signal);
  margin-bottom: var(--space-md);
  text-shadow: 0 0 30px rgba(0, 255, 240, 0.5);
}

.error-message {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

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

.thank-you-container {
  text-align: center;
  padding: var(--space-4xl) var(--space-lg);
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.thank-you-icon {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--space-xl);
  background: var(--color-glass);
  border: 2px solid var(--color-signal);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-5xl);
  color: var(--color-signal);
  box-shadow: var(--shadow-glow);
  animation: pulse-glow 2s ease-in-out infinite;
}

.thank-you-message h1 {
  color: var(--color-signal);
  margin-bottom: var(--space-md);
}

.thank-you-message p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}