/* ===========================
   CSS Custom Properties
   =========================== */
:root {
  /* Primary palette */
  --color-primary: #6c5ce7;
  --color-primary-dark: #4a3db8;
  --color-primary-light: #a29bfe;

  /* Neutral palette */
  --color-bg: #0a0a1a;
  --color-bg-alt: #0f0f2a;
  --color-bg-card: #161633;
  --color-text: #e8e8f0;
  --color-text-light: #a0a0c0;

  /* Accent */
  --color-accent: #00f5d4;
  --color-accent-2: #f72585;
  --color-accent-3: #4cc9f0;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 70px;
  --section-padding: 100px 0;

  /* Typography */
  --font-primary: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-size-base: 16px;
  --font-size-h1: 3.5rem;
  --font-size-h2: 2.5rem;
  --font-size-h3: 1.3rem;

  /* Effects */
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px rgba(108, 92, 231, 0.3);
  --border-radius: 16px;
  --transition-speed: 0.3s;
  --glass-bg: rgba(22, 22, 51, 0.7);
  --glass-border: rgba(255, 255, 255, 0.08);
}

/* ===========================
   CSS Reset
   =========================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===========================
   Particle Canvas
   =========================== */
#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ===========================
   Navigation Bar
   =========================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: transparent;
  transition: background-color var(--transition-speed), box-shadow var(--transition-speed), backdrop-filter var(--transition-speed);
}

.navbar.scrolled {
  background-color: rgba(10, 10, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 2px 20px rgba(108, 92, 231, 0.15);
  border-bottom: 1px solid var(--glass-border);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.logo {
  font-weight: bold;
  font-size: 1.5rem;
  color: #fff;
  text-decoration: none;
  transition: color var(--transition-speed);
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-3));
  transition: width var(--transition-speed);
  border-radius: 2px;
}

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

.nav-links a:hover,
.nav-links a.active {
  color: #fff;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #fff;
  cursor: pointer;
}

/* ===========================
   Hero Section
   =========================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  color: #fff;
  padding-top: var(--nav-height);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(108, 92, 231, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(0, 245, 212, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(247, 37, 133, 0.08) 0%, transparent 50%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  animation: heroFadeIn 1.2s ease-out;
}

@keyframes heroFadeIn {
  from {
    opacity: 0;
    transform: translateY(40px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.hero h1 {
  font-size: var(--font-size-h1);
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #fff 0%, var(--color-accent) 50%, var(--color-accent-3) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% auto;
  animation: shimmer 4s ease-in-out infinite;
}

@keyframes shimmer {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 200% center; }
}

.hero p {
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto 2rem;
  color: var(--color-text-light);
}

.cta-button {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-3));
  color: var(--color-bg);
  padding: 14px 36px;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: bold;
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
  position: relative;
  overflow: hidden;
}

.cta-button::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(255,255,255,0.2), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.cta-button:hover::before {
  transform: translateX(100%);
}

.cta-button:hover {
  transform: scale(1.05) translateY(-2px);
  box-shadow: 0 10px 40px rgba(0, 245, 212, 0.3);
}

/* ===========================
   Section Titles
   =========================== */
.services-section h2,
.about-section h2,
.contact-section h2 {
  font-size: var(--font-size-h2);
  text-align: center;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #fff, var(--color-accent-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===========================
   Services Section
   =========================== */
.services-section {
  padding: var(--section-padding);
  position: relative;
  z-index: 1;
  text-align: center;
}

.section-subtitle {
  color: var(--color-text-light);
  margin-bottom: 3rem;
  text-align: center;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.service-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 2rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-speed), box-shadow var(--transition-speed), border-color var(--transition-speed);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary), var(--color-accent-2));
  opacity: 0;
  transition: opacity var(--transition-speed);
}

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

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(108, 92, 231, 0.2);
  border-color: rgba(108, 92, 231, 0.3);
}

.service-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.service-card h3 {
  font-size: var(--font-size-h3);
  margin-bottom: 0.5rem;
  color: #fff;
}

.service-card p {
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===========================
   Scroll Animations
   =========================== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger animation for grid items */
.services-grid .animate-on-scroll:nth-child(1) { transition-delay: 0s; }
.services-grid .animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.services-grid .animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }
.services-grid .animate-on-scroll:nth-child(4) { transition-delay: 0.3s; }
.services-grid .animate-on-scroll:nth-child(5) { transition-delay: 0.4s; }
.services-grid .animate-on-scroll:nth-child(6) { transition-delay: 0.5s; }

/* ===========================
   About Section
   =========================== */
.about-section {
  padding: var(--section-padding);
  position: relative;
  z-index: 1;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.about-text h2 {
  text-align: left;
}

.about-text p {
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.mission-statement {
  font-style: italic;
  color: var(--color-accent) !important;
  border-left: 3px solid var(--color-accent);
  padding-left: 1rem;
}

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

.stat-item {
  text-align: center;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 1.5rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--glass-border);
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: bold;
  display: block;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

/* ===========================
   Contact Section
   =========================== */
.contact-section {
  padding: var(--section-padding);
  background: var(--color-bg-alt);
  text-align: center;
  position: relative;
  z-index: 1;
}

.contact-form {
  max-width: 600px;
  margin: 2rem auto 0;
  text-align: left;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  font-family: var(--font-primary);
  font-size: 1rem;
  background: var(--glass-bg);
  color: var(--color-text);
  transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.2), 0 0 20px rgba(108, 92, 231, 0.1);
}

.form-group.error input,
.form-group.error textarea {
  border-color: var(--color-accent-2);
}

.error-message {
  color: var(--color-accent-2);
  font-size: 0.85rem;
  margin-top: 0.25rem;
  display: none;
}

.form-group.error .error-message {
  display: block;
}

.submit-btn {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  border: none;
  padding: 14px 36px;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
  position: relative;
  overflow: hidden;
}

.submit-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(255,255,255,0.15), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.submit-btn:hover::before {
  transform: translateX(100%);
}

.submit-btn:hover {
  transform: scale(1.02) translateY(-2px);
  box-shadow: 0 10px 30px rgba(108, 92, 231, 0.3);
}

.success-message {
  background: rgba(0, 245, 212, 0.1);
  color: var(--color-accent);
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid rgba(0, 245, 212, 0.2);
  margin-top: 1rem;
  display: none;
}

/* ===========================
   Footer
   =========================== */
footer {
  background: var(--color-bg-alt);
  color: var(--color-text-light);
  padding: 3rem 0 1rem;
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--glass-border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 2rem;
}

.footer-brand .logo {
  font-size: 1.5rem;
  font-weight: bold;
  display: block;
  margin-bottom: 0.5rem;
}

.footer-brand p {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

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

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

.footer-bottom {
  border-top: 1px solid var(--glass-border);
  padding-top: 1rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* ===========================
   Floating Orbs (decorative)
   =========================== */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
  pointer-events: none;
  animation: orbFloat 8s ease-in-out infinite;
}

.orb-1 {
  width: 400px;
  height: 400px;
  background: var(--color-primary);
  top: -100px;
  left: -100px;
}

.orb-2 {
  width: 300px;
  height: 300px;
  background: var(--color-accent);
  bottom: -50px;
  right: -50px;
  animation-delay: -4s;
}

.orb-3 {
  width: 250px;
  height: 250px;
  background: var(--color-accent-2);
  top: 50%;
  left: 50%;
  animation-delay: -2s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    background: rgba(10, 10, 26, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 1rem 0;
    border-bottom: 1px solid var(--glass-border);
  }

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

  .nav-links li {
    text-align: center;
    padding: 0.75rem 0;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

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

  .about-content {
    grid-template-columns: 1fr;
  }

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

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}