/* 
   Black Alder Technology LLC - Core Design System & Styling
   Author: Antigravity AI
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* --- CSS Variables & Tokens --- */
:root {
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Premium High-Tech HSL Color Palette */
  --bg-dark: 220 18% 5%;          /* #07090e Obsidian Deep Space Black */
  --bg-card: 220 16% 9%;          /* #11141c Dark card background */
  --bg-glass: 220 16% 7% / 0.75;  /* Glassmorphism semi-transparent */
  
  --primary-cyan: 43 96% 56%;      /* #f5b014 Tech Gold */
  --primary-glow: 43 96% 56% / 0.08; /* Subtler glows for Apple-esque feel */
  --secondary-purple: 30 85% 50%;  /* #d97706 Tech Bronze/Amber */
  --secondary-glow: 30 85% 50% / 0.08;
  
  --text-primary: 210 40% 98%;    /* #f8fafc Light Gray White */
  --text-secondary: 215 20% 75%;  /* #94a3b8 Muted blue-gray */
  --text-dim: 215 12% 52%;        /* #64748b Muted steel-gray */

  --border-light: 220 20% 20% / 0.45;
  --border-glow: 43 96% 56% / 0.18;
  --border-purple-glow: 30 85% 50% / 0.18;

  --success: 142 70% 50%;        /* #22c55e Tech Green */
  --warning: 38 92% 50%;         /* #f59e0b Caution Orange */
  --error: 0 84% 60%;            /* #ef4444 Fault Red */

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --shadow-neon: 0 0 25px var(--primary-glow), inset 0 1px 1px rgba(255,255,255,0.05);
  --shadow-purple-neon: 0 0 25px var(--secondary-glow), inset 0 1px 1px rgba(255,255,255,0.05);
  
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Base & Reset Rules --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background-color: hsl(var(--bg-dark));
  color: hsl(var(--text-primary));
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: hsl(var(--bg-dark));
}
::-webkit-scrollbar-thumb {
  background: hsl(var(--border-light));
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: hsl(var(--primary-cyan) / 0.5);
}

/* --- High-Tech Grid & Background Elements --- */
.tech-grid-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  pointer-events: none;
}

.tech-radial-glow {
  position: absolute;
  top: -10%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, hsl(var(--primary-cyan) / 0.08) 0%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

/* --- Global Typographic Accents --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.02em;
  color: hsl(var(--text-primary));
}

p {
  color: hsl(var(--text-secondary));
}

.gradient-text {
  background: linear-gradient(135deg, hsl(var(--primary-cyan)) 0%, hsl(var(--secondary-purple)) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tech-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: hsl(var(--primary-cyan));
  margin-bottom: 0.5rem;
  display: block;
}

/* --- Layout Components --- */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: hsl(var(--bg-glass));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid hsl(var(--border-light));
  transition: var(--transition-smooth);
}

header.scrolled {
  padding: 0.5rem 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.4rem;
  color: hsl(var(--text-primary));
}

.logo-img {
  height: 36px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: hsl(var(--text-secondary));
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-fast);
  position: relative;
  padding: 0.25rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(to right, hsl(var(--primary-cyan)), hsl(var(--secondary-purple)));
  transition: var(--transition-smooth);
}

.nav-links a:hover {
  color: hsl(var(--text-primary));
}

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

.nav-links a.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  padding: 0.65rem 1.4rem !important;
  background: hsl(var(--primary-cyan) / 0.1);
  border: 1px solid hsl(var(--primary-cyan) / 0.4);
  color: hsl(var(--primary-cyan));
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-smooth);
  white-space: nowrap;
  line-height: 1;
}

.nav-links a.nav-cta:hover {
  background: hsl(var(--primary-cyan));
  color: hsl(var(--bg-dark));
  box-shadow: var(--shadow-neon);
}

.nav-links a.nav-cta::after {
  display: none;
}

/* Mobile Menu Button */
.menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
}

.menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: hsl(var(--text-primary));
  margin: 5px 0;
  transition: var(--transition-smooth);
}

/* --- Hero Section --- */
.hero {
  min-height: 95vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 8rem 2rem 4rem 2rem;
}

.hero-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
  width: 100%;
}

.hero-content h1 {
  font-size: 3.5rem;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  font-weight: 800;
}

.hero-content p {
  font-size: 1.15rem;
  margin-bottom: 2.5rem;
  max-width: 600px;
}

.hero-btns {
  display: flex;
  gap: 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  font-size: 1rem;
  transition: var(--transition-smooth);
}

.btn-primary {
  background: linear-gradient(135deg, hsl(var(--primary-cyan)) 0%, hsl(var(--secondary-purple)) 100%);
  color: #07090e;
  border: none;
  box-shadow: var(--shadow-neon);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px hsl(var(--primary-cyan) / 0.4);
}

.btn-secondary {
  background: hsl(var(--bg-glass));
  color: hsl(var(--text-primary));
  border: 1px solid hsl(var(--border-light));
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  border-color: hsl(var(--primary-cyan));
  color: hsl(var(--primary-cyan));
  transform: translateY(-2px);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.rf-dome {
  position: relative;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  border: 1px dashed hsl(var(--primary-cyan) / 0.3);
  display: flex;
  justify-content: center;
  align-items: center;
  animation: spin 60s linear infinite;
}

.rf-dome-inner {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 1px solid hsl(var(--secondary-purple) / 0.2);
  display: flex;
  justify-content: center;
  align-items: center;
  animation: spin-rev 30s linear infinite;
}

.rf-core {
  width: 80px;
  height: 80px;
  background: radial-gradient(circle, hsl(var(--primary-cyan)) 0%, hsl(var(--secondary-purple)) 100%);
  border-radius: 50%;
  box-shadow: 0 0 40px hsl(var(--primary-cyan) / 0.6);
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

.rf-core svg {
  width: 36px;
  height: 36px;
  stroke: #050a12;
  stroke-width: 2.5;
}

.rf-wave-pulse {
  position: absolute;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 2px solid hsl(var(--primary-cyan));
  opacity: 0; /* Hidden during initial delay */
  animation: pulse-out 4s cubic-bezier(0.1, 0.8, 0.3, 1) infinite;
  pointer-events: none;
}

.rf-wave-pulse:nth-child(2) {
  animation-delay: 1.33s;
}

.rf-wave-pulse:nth-child(3) {
  animation-delay: 2.66s;
}

/* Animations */
@keyframes spin {
  100% { transform: rotate(360deg); }
}
@keyframes spin-rev {
  100% { transform: rotate(-360deg); }
}
@keyframes pulse-out {
  0% {
    width: 80px;
    height: 80px;
    opacity: 0;
  }
  10% {
    opacity: 0.8;
  }
  90% {
    opacity: 0.2;
  }
  95%, 100% {
    width: 360px;
    height: 360px;
    opacity: 0;
  }
}

/* --- Section Container Styles --- */
section {
  padding: 8rem 2rem;
  position: relative;
}

.section-header {
  max-width: 800px;
  margin: 0 auto 5rem auto;
  text-align: center;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-top: 0.5rem;
  font-weight: 800;
}

.section-header p {
  font-size: 1.1rem;
  margin-top: 1rem;
}

/* --- Services Grid --- */
.services-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.service-card {
  background: linear-gradient(145deg, hsl(var(--bg-card)), rgba(17, 24, 39, 0.4));
  border: 1px solid hsl(var(--border-light));
  border-radius: var(--radius-lg);
  padding: 3rem 2.25rem;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(225deg, transparent 80%, hsl(var(--primary-cyan) / 0.05) 100%);
  pointer-events: none;
  transition: var(--transition-smooth);
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: hsl(var(--primary-cyan) / 0.5);
  box-shadow: 0 10px 30px rgba(0,0,0,0.2), var(--shadow-neon);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon-box {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: hsl(var(--primary-cyan) / 0.1);
  border: 1px solid hsl(var(--primary-cyan) / 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  color: hsl(var(--primary-cyan));
  transition: var(--transition-smooth);
}

.service-card:hover .service-icon-box {
  background: hsl(var(--primary-cyan));
  color: #050a12;
  box-shadow: 0 0 15px hsl(var(--primary-cyan) / 0.5);
}

.service-icon-box svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

.service-card h3 {
  font-size: 1.35rem;
  margin-bottom: 1rem;
}

.service-card p {
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.service-features {
  list-style: none;
  margin-top: auto;
}

.service-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: hsl(var(--text-secondary));
  margin-bottom: 0.6rem;
}

.service-features li svg {
  width: 16px;
  height: 16px;
  stroke: hsl(var(--primary-cyan));
  stroke-width: 2.5;
  flex-shrink: 0;
}

/* --- Interactive Validation Showcase --- */
.showcase-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 4rem;
  align-items: center;
}

.showcase-content h3 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.showcase-content p {
  font-size: 1.05rem;
  margin-bottom: 2rem;
}

.showcase-highlights {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.highlight-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.highlight-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: hsl(var(--secondary-purple) / 0.1);
  border: 1px solid hsl(var(--secondary-purple) / 0.4);
  color: hsl(var(--secondary-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.highlight-icon svg {
  width: 12px;
  height: 12px;
  stroke: currentColor;
  stroke-width: 2.5;
}

.highlight-text h4 {
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
}

.highlight-text p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* Validation System Dashboard Mockup */
.dashboard-mockup {
  background: #060913;
  border: 1px solid hsl(var(--border-light));
  border-radius: var(--radius-md);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), var(--shadow-purple-neon);
  overflow: hidden;
  font-family: var(--font-mono);
  display: flex;
  flex-direction: column;
  height: 520px;
  position: relative;
  transition: var(--transition-smooth);
}

.dashboard-mockup::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(to right, hsl(var(--primary-cyan)), hsl(var(--secondary-purple)));
  z-index: 10;
}

.dash-header {
  background: #0b101d;
  padding: 0.75rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid hsl(var(--border-light));
  z-index: 10;
}

.dash-dots {
  display: flex;
  gap: 6px;
}

.dash-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ef4444;
}

.dash-dot:nth-child(2) { background: #f59e0b; }
.dash-dot:nth-child(3) { background: #22c55e; }

.dash-title {
  color: hsl(var(--text-dim));
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.dash-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: hsl(var(--text-secondary));
}

.dash-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: hsl(var(--text-dim));
  transition: var(--transition-fast);
}

.dash-status-dot.active {
  background: hsl(var(--success));
  box-shadow: 0 0 8px hsl(var(--success));
}

.dash-status-dot.testing {
  background: hsl(var(--warning));
  box-shadow: 0 0 8px hsl(var(--warning));
  animation: pulse-warn 1s infinite alternate;
}

@keyframes pulse-warn {
  0% { opacity: 0.4; }
  100% { opacity: 1; }
}

.dash-body {
  padding: 1.25rem;
  flex-grow: 1;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 1rem;
  overflow: hidden;
}

.dash-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.dash-metric {
  background: rgba(17, 23, 38, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 4px;
  padding: 0.4rem 0.6rem;
  text-align: center;
  position: relative;
  transition: var(--transition-fast);
}

.dash-metric:hover {
  background: rgba(17, 23, 38, 0.85);
  border-color: hsl(var(--primary-cyan) / 0.4);
}

/* High-tech corners */
.dash-metric::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  width: 6px;
  height: 6px;
  border-top: 1.5px solid hsl(var(--primary-cyan) / 0.7);
  border-left: 1.5px solid hsl(var(--primary-cyan) / 0.7);
  pointer-events: none;
}

.dash-metric::after {
  content: '';
  position: absolute;
  bottom: -1px;
  right: -1px;
  width: 6px;
  height: 6px;
  border-bottom: 1.5px solid hsl(var(--primary-cyan) / 0.7);
  border-right: 1.5px solid hsl(var(--primary-cyan) / 0.7);
  pointer-events: none;
}

.dash-metric:nth-child(2)::before {
  border-top-color: hsl(var(--secondary-purple) / 0.7);
  border-left-color: hsl(var(--secondary-purple) / 0.7);
}

.dash-metric:nth-child(2)::after {
  border-bottom-color: hsl(var(--secondary-purple) / 0.7);
  border-right-color: hsl(var(--secondary-purple) / 0.7);
}

.dash-metric-lbl {
  font-size: 0.58rem;
  color: hsl(var(--text-dim));
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.15rem;
}

.dash-metric-val {
  font-size: 1.05rem;
  font-weight: 700;
  color: hsl(var(--text-primary));
  letter-spacing: -0.02em;
}

/* Metric Colors */
.dash-metric-val.cyan {
  color: hsl(var(--primary-cyan));
  text-shadow: 0 0 8px hsl(var(--primary-cyan) / 0.3);
}

.dash-metric-val.purple {
  color: hsl(var(--secondary-purple));
  text-shadow: 0 0 8px hsl(var(--secondary-purple) / 0.3);
}

.dash-metric-val.green {
  color: hsl(var(--success));
  text-shadow: 0 0 8px hsl(var(--success) / 0.3);
}

.dash-metric-val.orange {
  color: hsl(var(--warning));
  text-shadow: 0 0 8px hsl(var(--warning) / 0.3);
}

.dash-metric-val.red {
  color: hsl(var(--error));
  text-shadow: 0 0 8px hsl(var(--error) / 0.3);
}

.dash-metric-val.muted {
  color: hsl(var(--text-dim));
  text-shadow: none;
}

/* Terminal Container & Overlay Scanner */
.dash-terminal-container {
  position: relative;
  overflow: hidden;
  flex-grow: 1;
  display: flex;
  border: 1px solid hsl(var(--primary-cyan) / 0.12);
  border-radius: var(--radius-md);
  background: #03060f;
  box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.8);
}

.dash-terminal {
  flex-grow: 1;
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 1rem;
  font-size: 0.72rem;
  color: #38bdf8;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
  scroll-behavior: smooth;
}

.dash-terminal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 5;
  background: linear-gradient(
    rgba(18, 16, 16, 0) 50%, 
    rgba(0, 0, 0, 0.15) 50%
  );
  background-size: 100% 4px;
  opacity: 0.65;
}

.dash-terminal-overlay::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 0;
  width: 100%;
  height: 4px;
  background: hsl(var(--primary-cyan) / 0.25);
  box-shadow: 0 0 15px 4px hsl(var(--primary-cyan) / 0.3);
  animation: scan-line 6s linear infinite;
}

@keyframes scan-line {
  0% { top: -10px; }
  100% { top: 100%; }
}

.dash-terminal .log-line {
  line-height: 1.45;
  opacity: 0.85;
}

.dash-terminal .log-success { color: hsl(var(--success)); }
.dash-terminal .log-warn { color: hsl(var(--warning)); }
.dash-terminal .log-error { color: hsl(var(--error)); }

/* sharp CRT blink cursor */
.console-cursor {
  display: inline-block;
  color: hsl(var(--primary-cyan));
  animation: console-blink 1s steps(2, start) infinite;
  text-shadow: 0 0 5px hsl(var(--primary-cyan));
}

@keyframes console-blink {
  to { visibility: hidden; }
}

.dash-ctrls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #0b101d;
  border: 1px solid hsl(var(--border-light));
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
}

.dash-btn {
  background: linear-gradient(135deg, hsl(var(--primary-cyan)), hsl(var(--secondary-purple)));
  color: #07090e;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.5rem 1rem;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.75rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.dash-btn:hover {
  box-shadow: 0 0 10px hsl(var(--primary-cyan) / 0.5);
  transform: translateY(-1px);
}

.dash-btn:disabled {
  background: #272e3f;
  color: #64748b;
  cursor: not-allowed;
  box-shadow: none;
}

.dash-progress-container {
  flex-grow: 1;
  margin-left: 1.5rem;
  background: #070a12;
  border-radius: var(--radius-full);
  height: 8px;
  overflow: hidden;
  position: relative;
}

.dash-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(to right, hsl(var(--primary-cyan)), hsl(var(--secondary-purple)));
  transition: width 0.1s linear;
}

/* --- Interactive RF Visualizer --- */
.rf-visualizer-section {
  background: linear-gradient(to bottom, transparent, rgba(9, 14, 25, 0.4), transparent);
}

.visualizer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 4rem;
  align-items: center;
}

.visualizer-controls {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.control-label-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.95rem;
  font-weight: 500;
}

.control-label-row span:last-child {
  font-family: var(--font-mono);
  color: hsl(var(--primary-cyan));
}

/* Custom Range Input Styling */
input[type=range] {
  -webkit-appearance: none;
  width: 100%;
  background: transparent;
}

input[type=range]:focus {
  outline: none;
}

input[type=range]::-webkit-slider-runnable-track {
  width: 100%;
  height: 6px;
  cursor: pointer;
  background: #1e293b;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

input[type=range]::-webkit-slider-thumb {
  height: 18px;
  width: 18px;
  border-radius: 50%;
  background: hsl(var(--primary-cyan));
  cursor: pointer;
  -webkit-appearance: none;
  margin-top: -6px;
  box-shadow: 0 0 10px hsl(var(--primary-cyan) / 0.8);
  transition: var(--transition-fast);
}

input[type=range]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 0 15px hsl(var(--primary-cyan));
}

.visualizer-canvas-card {
  background: #0b0f19;
  border: 1px solid hsl(var(--border-light));
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  aspect-ratio: 16/9;
  display: flex;
  flex-direction: column;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
}

.visualizer-canvas-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  background-size: 20px 20px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.01) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.01) 1px, transparent 1px);
  pointer-events: none;
}

.visualizer-canvas-card canvas {
  width: 100%;
  height: 100%;
  background: #05080e;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.02);
}

/* --- About Section --- */
.about-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.about-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.about-visual-card {
  background: linear-gradient(145deg, #111827, rgba(17, 24, 39, 0.4));
  border: 1px solid hsl(var(--border-light));
  border-radius: var(--radius-md);
  padding: 2rem;
  text-align: center;
  transition: var(--transition-smooth);
}

.about-visual-card:hover {
  border-color: hsl(var(--secondary-purple));
  box-shadow: var(--shadow-purple-neon);
  transform: translateY(-3px);
}

.about-visual-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: hsl(var(--secondary-purple));
  margin-bottom: 0.5rem;
}

.about-visual-lbl {
  font-size: 0.9rem;
  color: hsl(var(--text-secondary));
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.about-content h3 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.about-content p {
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
}

/* --- Contact Section --- */
.contact-container {
  max-width: 900px;
  margin: 0 auto;
  background: linear-gradient(180deg, #111827 0%, rgba(17, 24, 39, 0.4) 100%);
  border: 1px solid hsl(var(--border-light));
  border-radius: var(--radius-lg);
  padding: 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.contact-container::after {
  content: '';
  position: absolute;
  top: -150px;
  right: -150px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, hsl(var(--secondary-purple) / 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.contact-email-card {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: hsl(var(--primary-cyan) / 0.05);
  border: 1px solid hsl(var(--primary-cyan) / 0.2);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  color: hsl(var(--primary-cyan));
  font-family: var(--font-mono);
  font-size: 1.05rem;
  text-decoration: none;
  margin-bottom: 3rem;
  transition: var(--transition-smooth);
}

.contact-email-card:hover {
  background: hsl(var(--primary-cyan) / 0.1);
  border-color: hsl(var(--primary-cyan));
  box-shadow: var(--shadow-neon);
  transform: translateY(-1px);
}

.contact-email-card svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  text-align: left;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group.full-width {
  grid-column: span 2;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: hsl(var(--text-secondary));
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group textarea {
  background: #070a12;
  border: 1px solid hsl(var(--border-light));
  border-radius: var(--radius-md);
  padding: 1rem;
  color: hsl(var(--text-primary));
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: var(--transition-smooth);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: hsl(var(--primary-cyan));
  box-shadow: var(--shadow-neon);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form button {
  grid-column: span 2;
  margin-top: 1rem;
  width: 100%;
}

.form-result {
  grid-column: span 2;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  margin-top: 1rem;
  display: none;
  padding: 1rem;
  border-radius: var(--radius-md);
  animation: fadeIn 0.4s ease forwards;
}

.form-result.success {
  background: hsl(var(--success) / 0.1);
  border: 1px solid hsl(var(--success) / 0.3);
  color: hsl(var(--success));
}

.form-result.error {
  background: hsl(var(--error) / 0.1);
  border: 1px solid hsl(var(--error) / 0.3);
  color: hsl(var(--error));
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Footer --- */
footer {
  border-top: 1px solid hsl(var(--border-light));
  padding: 4rem 2rem;
  background: #05070c;
}

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: hsl(var(--text-dim));
  font-weight: 700;
  font-size: 1.1rem;
}

.footer-logo .logo-img {
  height: 28px;
  width: auto;
  opacity: 0.6;
  transition: var(--transition-fast);
}

.footer-logo:hover .logo-img {
  opacity: 1;
}

.footer-copy {
  font-size: 0.9rem;
  color: hsl(var(--text-dim));
}

/* --- Mobile Menu / Responsive Rules --- */
@media (max-width: 968px) {
  .hero-grid,
  .showcase-container,
  .visualizer-container,
  .about-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero {
    padding-top: 7rem;
    text-align: center;
  }

  .hero-content h1 {
    font-size: 2.8rem;
  }

  .hero-content p {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-btns {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .menu-btn {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: #080c14;
    border-bottom: 1px solid hsl(var(--border-light));
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    align-items: center;
    display: none;
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-cta {
    display: none;
  }

  .contact-container {
    padding: 2.5rem 1.5rem;
  }

  .contact-form {
    grid-template-columns: 1fr;
  }

  .form-group.full-width {
    grid-column: span 1;
  }

  .contact-form button {
    grid-column: span 1;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 2.2rem;
  }

  .hero-btns {
    flex-direction: column;
    width: 100%;
  }

  .hero-btns .btn {
    width: 100%;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }

  .footer-container {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }
}