/* ==========================================================================
   SonicBridge Official Site - CSS Design System (Vanilla CSS Style)
   Aesthetic Concept: Sleek Dark Mode, Deep Amethyst Accents & Glassmorphism
   ========================================================================== */

/* 1. CSS Custom Properties / Design Tokens */
:root {
  --bg-base: hsl(240, 15%, 8%);
  --bg-card: hsla(240, 15%, 12%, 0.6);
  --bg-nav: hsla(240, 15%, 8%, 0.75);
  
  --accent-cyan: hsl(180, 100%, 50%);
  --accent-cyan-glow: hsla(180, 100%, 50%, 0.15);
  --accent-purple: hsl(280, 75%, 60%);
  --accent-purple-glow: hsla(280, 75%, 60%, 0.15);
  --accent-onset: hsl(340, 90%, 55%);
  --accent-onset-glow: hsla(340, 90%, 55%, 0.2);
  
  --text-primary: hsl(0, 0%, 95%);
  --text-secondary: hsl(240, 10%, 82%);
  --text-muted: hsl(240, 5%, 68%);
  
  --border-glow: hsla(240, 10%, 20%, 0.8);
  --border-active: hsla(180, 100%, 50%, 0.3);
  
  --font-family-base: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: 'JetBrains Mono', monospace;
  
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 2. Base Resets */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-family-base);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: var(--transition-smooth);
}

a:hover {
  color: var(--text-primary);
  text-shadow: 0 0 8px var(--accent-cyan-glow);
}

ul {
  list-style: none;
}

/* 3. Reusable Glassmorphism Components */
.glass-panel {
  background-color: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glow);
  border-radius: 16px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  transition: var(--transition-smooth);
}

.glass-panel:hover {
  border-color: var(--border-active);
  box-shadow: 0 8px 32px 0 var(--accent-cyan-glow);
  transform: translateY(-2px);
}

/* 4. Layout Sections & Grid */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Sticky Glassmorphic Header Navigation */
.header-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--bg-nav);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-glow);
  transition: var(--transition-smooth);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.nav-logo {
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 10px 14px;
  display: inline-flex;
  align-items: center;
  border-radius: 6px;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--accent-cyan);
}

/* 5. Animated Audio Visualizer Component */
.visualizer-container {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 50px;
  padding: 0 10px;
}

.visualizer-bar {
  width: 4px;
  background: linear-gradient(to top, var(--accent-purple), var(--accent-cyan));
  border-radius: 2px;
  animation: pulse-spectrum 1.2s ease-in-out infinite alternate;
}

/* Simulated Audio Wave Keyframes with offset timings */
.visualizer-bar:nth-child(1) { height: 10%; animation-delay: 0.1s; }
.visualizer-bar:nth-child(2) { height: 30%; animation-delay: 0.4s; }
.visualizer-bar:nth-child(3) { height: 60%; animation-delay: 0.2s; }
.visualizer-bar:nth-child(4) { height: 80%; animation-delay: 0.6s; }
.visualizer-bar:nth-child(5) { height: 40%; animation-delay: 0.3s; }
.visualizer-bar:nth-child(6) { height: 90%; animation-delay: 0.5s; }
.visualizer-bar:nth-child(7) { height: 50%; animation-delay: 0.15s; }
.visualizer-bar:nth-child(8) { height: 20%; animation-delay: 0.7s; }

@keyframes pulse-spectrum {
  0% {
    transform: scaleY(0.2);
    filter: brightness(0.8);
  }
  100% {
    transform: scaleY(1);
    filter: brightness(1.2) drop-shadow(0 0 4px var(--accent-cyan));
  }
}

/* 6. Console Window styling (for VHS terminal GIFs) */
.console-window {
  border-radius: 8px;
  background-color: hsl(240, 15%, 5%);
  border: 1px solid var(--border-glow);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.console-header {
  height: 36px;
  background-color: hsl(240, 15%, 10%);
  border-bottom: 1px solid var(--border-glow);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 6px;
}

.console-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red { background-color: hsl(0, 80%, 60%); }
.dot-yellow { background-color: hsl(40, 80%, 60%); }
.dot-green { background-color: hsl(120, 80%, 50%); }

.console-title {
  margin-left: auto;
  margin-right: auto;
  font-family: var(--font-family-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.console-body {
  padding: 20px;
  font-family: var(--font-family-mono);
  font-size: 0.85rem;
  color: var(--text-primary);
  overflow-x: auto;
  white-space: pre;
}

/* 7. Code Blocks & Badges */
.badge-install {
  display: inline-flex;
  align-items: center;
  background-color: hsl(240, 15%, 12%);
  border: 1px solid var(--border-glow);
  padding: 6px 14px;
  border-radius: 20px;
  font-family: var(--font-family-mono);
  font-size: 0.85rem;
  color: var(--accent-cyan);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.badge-install:hover {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px var(--accent-cyan-glow);
}

/* 8. Tabbed Installation System */
.install-card {
  background-color: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glow);
  border-radius: 12px;
  overflow: hidden;
  max-width: 480px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  margin-top: 24px;
  transition: var(--transition-smooth);
}

.install-card:hover {
  border-color: var(--border-active);
  box-shadow: 0 8px 32px 0 var(--accent-cyan-glow);
}

.tab-headers {
  display: flex;
  background-color: hsla(240, 15%, 5%, 0.8);
  border-bottom: 1px solid var(--border-glow);
}

.tab-btn {
  flex: 1;
  background: none;
  border: none;
  padding: 12px 8px;
  font-family: var(--font-family-base);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  outline: none;
  transition: var(--transition-smooth);
  border-bottom: 2px solid transparent;
  text-align: center;
}

.tab-btn:hover {
  color: var(--text-primary);
  background-color: hsla(240, 15%, 10%, 0.5);
}

.tab-btn.active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
  background-color: hsla(240, 15%, 12%, 0.8);
}

.tab-panel {
  display: none;
  padding: 20px;
  animation: fadeInPanel 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.tab-panel.active {
  display: block;
}

@keyframes fadeInPanel {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.install-cmd-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.install-cmd-row:last-child {
  margin-bottom: 0;
}

.install-cmd-label {
  font-size: 0.72rem;
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-align: left;
}

.install-cmd-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: hsl(240, 15%, 5%);
  border: 1px solid var(--border-glow);
  padding: 10px 14px;
  border-radius: 6px;
  font-family: var(--font-family-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.install-cmd-box:hover {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan-glow);
  background-color: hsl(240, 15%, 7%);
}

.install-copy-icon {
  font-size: 0.7rem;
  color: var(--text-muted);
  background-color: hsla(240, 15%, 15%, 0.8);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 500;
  transition: var(--transition-smooth);
}

.install-cmd-box:hover .install-copy-icon {
  color: var(--accent-cyan);
  background-color: var(--accent-cyan-glow);
}