/* ================================
   Nexus Planet - Premium Design System
   ================================ */

/* Import Modern Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* ================================
   CSS Custom Properties
   ================================ */
:root {
  /* Color Palette */
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --accent: #8b5cf6;
  --accent-dark: #7c3aed;
  --accent-light: #a78bfa;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;

  /* Dark Theme Colors */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;

  /* Glass Effect */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: rgba(0, 0, 0, 0.1);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  --gradient-mesh: radial-gradient(at 0% 0%, #6366f1 0px, transparent 50%),
    radial-gradient(at 100% 0%, #8b5cf6 0px, transparent 50%),
    radial-gradient(at 100% 100%, #ec4899 0px, transparent 50%),
    radial-gradient(at 0% 100%, #3b82f6 0px, transparent 50%);

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

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.5);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

/* ================================
   CSS Reset & Base Styles
   ================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* ================================
   Typography
   ================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
}

p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

/* ================================
   Utility Classes
   ================================ */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

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

.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ================================
   Glass Morphism Components
   ================================ */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.glass-card {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.glass-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

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

/* ================================
   Buttons
   ================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 1rem 2rem;
  font-family: 'Outfit', sans-serif;
  font-size: 1.125rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 40px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--glass-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--glass-bg);
  border-color: var(--primary-light);
  transform: translateY(-2px);
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

/* ================================
   Navigation
   ================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--spacing-md) 0;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  padding: var(--spacing-sm) 0;
  background: rgba(15, 23, 42, 0.95);
  box-shadow: var(--shadow-lg);
}

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

.logo {
  font-family: 'Outfit', sans-serif;
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  transition: all var(--transition-base);
}

.logo:hover {
  transform: scale(1.05);
}

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

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

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

/* ================================
   Hero Section
   ================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  z-index: 0;
}

#particles-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-gradient {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1000px;
  height: 1000px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
  filter: blur(80px);
  animation: pulse-glow 8s ease-in-out infinite;
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.5rem 1.5rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary-light);
  margin-bottom: var(--spacing-lg);
  backdrop-filter: blur(10px);
  animation: float 3s ease-in-out infinite;
}

.hero h1 {
  margin-bottom: var(--spacing-md);
  animation: fade-up 1s ease-out;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  animation: fade-up 1s ease-out 0.2s both;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  animation: fade-up 1s ease-out 0.4s both;
}

/* ================================
   Feature Grid
   ================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.feature-card {
  position: relative;
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-glow);
  transition: all var(--transition-base);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  color: var(--text-muted);
  font-size: 1rem;
}

/* ================================
   Stats Section
   ================================ */
.stats {
  background: var(--glass-bg);
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  text-align: center;
}

.stat-item h3 {
  font-size: 3rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
}

.stat-item p {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ================================
   Footer
   ================================ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--glass-border);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  font-size: 1.25rem;
}

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

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary-light);
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
}

.social-icon {
  width: 40px;
  height: 40px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-base);
}

.social-icon:hover {
  background: var(--gradient-primary);
  color: white;
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--glass-border);
  color: var(--text-muted);
}

/* ================================
   Animations
   ================================ */
@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

@keyframes pulse-glow {

  0%,
  100% {
    opacity: 0.3;
    transform: translate(-50%, -50%) scale(1);
  }

  50% {
    opacity: 0.5;
    transform: translate(-50%, -50%) scale(1.1);
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }

  100% {
    background-position: 1000px 0;
  }
}

/* Scroll Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ================================
   Utility: Expertise Tags
   ================================ */
.expertise-tags {
  margin-top: 1rem;
  font-weight: 600;
  font-size: 0.9rem;
}

/* ================================
   Hamburger Menu
   ================================ */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
  transition: all var(--transition-base);
}

.hamburger:hover {
  border-color: var(--primary-light);
  background: var(--glass-bg);
}

.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

/* Hamburger X animation */
.hamburger.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ================================
   Responsive Design
   ================================ */
iframe {
  max-width: 100%;
  border-radius: var(--radius-md);
}

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-cta {
    display: none;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    max-width: 320px;
    height: 100vh;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    flex-direction: column;
    padding: 6rem 2rem 2rem;
    gap: var(--spacing-md);
    z-index: 1000;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: 1px solid var(--glass-border);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.5);
    overflow-y: auto;
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links a {
    font-size: 1.1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section {
    padding: var(--spacing-xl) 0;
  }

  iframe {
    height: 400px !important;
  }
}

/* Mobile Menu Overlay */
.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .btn {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
  }

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

  .hero-badge {
    font-size: 0.75rem;
    padding: 0.4rem 1rem;
  }
}

/* ================================
   Tech Stack Marquee
   ================================ */
.tech-wrapper {
  overflow: hidden;
  background: var(--bg-secondary);
  padding: 1rem 0;
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
  position: relative;
}

.tech-marquee {
  display: flex;
  gap: 2rem;
  width: max-content;
  animation: scroll 40s linear infinite;
}

.tech-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.1rem;
  color: var(--text-muted);
  font-weight: 600;
  padding: 0.5rem 1rem;
  background: var(--glass-bg);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.tech-item i, .tech-item span.icon {
    font-size: 1.2rem;
}

@keyframes scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ================================
   Process / Workflow Section
   ================================ */
.process-container {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.process-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    max-width: 900px;
    margin: 3rem auto 0;
    gap: 2rem;
}

/* Connecting Line (Desktop) */
.process-steps::before {
    content: '';
    position: absolute;
    top: 25px;
    left: 40px;
    right: 40px;
    height: 2px;
    background: var(--glass-border);
    z-index: 0;
    display: none;
}

@media (min-width: 768px) {
    .process-steps::before {
        display: block;
    }
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 1;
    flex: 1;
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--bg-primary);
    border: 2px solid var(--primary);
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.3);
    transition: all var(--transition-base);
}

.process-step:hover .step-number {
    background: var(--primary);
    color: white;
    transform: scale(1.1);
    box-shadow: 0 0 25px rgba(99, 102, 241, 0.6);
}

.process-step h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.process-step p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Mobile responsive for process */
@media (max-width: 768px) {
    .process-steps {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .process-step {
        display: flex;
        gap: 1.5rem;
        text-align: right;
        align-items: flex-start;
    }
    
    .step-number {
        margin: 0;
        flex-shrink: 0;
    }
}