@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@700&family=Roboto:wght@400;500&display=swap');

:root {
  /* Light Mode Colors */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F2F2F2;
  --text-primary: #1A1A1A;
  --text-secondary: #4A4A4A;
  --accent-cyan: #00CFFF;
  --accent-violet: #B28FFF;
  --particle-color: rgba(0, 150, 220, 0.6);
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(255, 255, 255, 0.5);
}

[data-theme="dark"] {
  /* Dark Mode Colors */
  --bg-primary: #000000;
  --bg-secondary: #1A1A1A;
  --text-primary: #FFFFFF;
  --text-secondary: #E0E0E0;
  --accent-cyan: #00FFFF;
  --accent-violet: #8F00FF;
  --particle-color: rgba(0, 255, 255, 0.3);
  --glass-bg: rgba(0, 0, 0, 0.6);
  --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
  font-family: 'Roboto', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
  position: relative;
}

/* Theme Image Toggle */
.img-light {
  display: block;
}

.img-dark {
  display: none;
}

[data-theme="dark"] .img-light {
  display: none;
}

[data-theme="dark"] .img-dark {
  display: block;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  margin-bottom: 1rem;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--accent-cyan);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header & Nav */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--glass-border);
  transition: background 0.4s ease;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-violet));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo img {
  width: 30px;
  height: 30px;
}

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

.nav-links a {
  font-weight: 500;
  font-size: 1rem;
  position: relative;
  padding-bottom: 5px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-violet));
  transition: width 0.3s ease;
}

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

.theme-toggle {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.2rem;
  cursor: pointer;
  transition: color 0.3s ease, transform 0.3s ease;
}

.theme-toggle:hover {
  color: var(--accent-cyan);
  transform: rotate(15deg);
}

.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

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

.hero-content {
  position: relative;
  text-align: center;
  z-index: 2;
  max-width: 800px;
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-violet) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.hero-image-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  opacity: 0.8;
}

.hero-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, transparent 0%, var(--bg-primary) 100%);
}

.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-family: 'Roboto', sans-serif;
  font-weight: 500;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #fff;
  background: linear-gradient(45deg, var(--accent-cyan), var(--accent-violet));
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-decoration: none;
  box-shadow: 0 4px 15px rgba(0, 207, 255, 0.3);
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(178, 143, 255, 0.5);
  color: #fff;
}

/* Base Sections */
.section {
  padding: 6rem 0;
  position: relative;
}

.section-bg {
  background-color: var(--bg-secondary);
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-violet));
  margin: 1rem auto 0;
  border-radius: 2px;
}

/* Cards / Content Blocks */
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  padding: 2rem;
  border-radius: 20px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-violet));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .card:hover {
  box-shadow: 0 15px 30px rgba(0, 255, 255, 0.1);
}

.card:hover::before {
  transform: scaleX(1);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 1.5rem;
}

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

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

/* Single Page Content */
.page-header {
  min-height: 60vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 80px;
}

.page-header-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  opacity: 0.6;
}

.page-header-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, var(--bg-primary) 0%, transparent 100%);
  z-index: 2;
}

[data-theme="dark"] .page-header-overlay {
  background: linear-gradient(to right, var(--bg-primary) 20%, transparent 100%);
}

.page-title {
  position: relative;
  z-index: 3;
  max-width: 600px;
}

.page-title h1 {
  font-size: 3.5rem;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-violet));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-content {
  padding: 4rem 0;
  max-width: 800px;
  margin: 0 auto;
  font-size: 1.1rem;
}

.page-content h2 {
  font-size: 2rem;
  margin-top: 3rem;
  margin-bottom: 1.5rem;
  color: var(--accent-cyan);
}

.page-content p {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

.page-content ul {
  margin-bottom: 2rem;
  padding-left: 2rem;
  color: var(--text-secondary);
}

.page-content li {
  margin-bottom: 0.5rem;
}

/* Feature Row Layouts (Zig-zag) */
.feature-row {
  display: flex;
  align-items: center;
  gap: 3rem;
  margin-bottom: 4rem;
}

.feature-row.reverse {
  flex-direction: row-reverse;
}

.feature-text {
  flex: 1;
}

.feature-image {
  flex: 1;
  max-width: 45%;
}

.feature-image img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.page-content.wide {
  max-width: 1000px;
}

/* Particles / Floating elements */
.particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.particle {
  position: absolute;
  background: var(--particle-color);
  border-radius: 50%;
  animation: float 10s infinite linear;
}

@keyframes float {
  0% {
    transform: translateY(0) translateX(0) scale(1);
    opacity: 0;
  }

  10% {
    opacity: 1;
  }

  90% {
    opacity: 1;
  }

  100% {
    transform: translateY(var(--end-y, -100vh)) translateX(var(--end-x, 50px)) scale(1.5);
    opacity: 0;
  }
}

/* Forms */
.cyber-form {
  max-width: 600px;
  margin: 0 auto;
}

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

.form-control {
  width: 100%;
  padding: 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: 'Roboto', sans-serif;
  font-size: 1rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0, 207, 255, 0.2);
}

.checkbox-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.checkbox-group input {
  width: 18px;
  height: 18px;
}

/* Footer */
footer {
  background: var(--bg-secondary);
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--glass-border);
}

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

.footer-logo {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.footer-motto {
  color: var(--text-secondary);
  font-style: italic;
}

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

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hamburger {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--bg-primary);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: left 0.3s ease;
  }

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

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

  .page-title h1 {
    font-size: 2.5rem;
  }

  .feature-row,
  .feature-row.reverse {
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 3rem;
  }

  .feature-image {
    max-width: 100%;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}