:root {
  --color-bg-dark: #0a0f16;
  --color-bg-light: #161e2b;
  --color-primary: #00e5ff;
  --color-secondary: #b92b27;
  --color-accent: #9d00ff;
  --color-text: #ffffff;
  --color-text-muted: #a0aec0;
  --glass-bg: rgba(22, 30, 43, 0.6);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --transition: all 0.3s ease;
}

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

html, body {
  overflow-x: hidden;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--color-bg-dark);
  color: var(--color-text);
  line-height: 1.6;
}

.no-scroll {
  overflow: hidden;
}

.menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(5px);
  z-index: 850;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* Glassmorphism Utilities */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 16px;
}

/* Navigation */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 950;
  padding: 1rem 0;
  transition: var(--transition);
}

header.scrolled {
  background: rgba(10, 15, 22, 0.9);
  backdrop-filter: blur(10px);
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--glass-border);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo img {
  height: 40px;
  width: auto;
}

.logo span {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition);
}

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

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

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  box-shadow: 0 4px 15px rgba(0, 229, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(157, 0, 255, 0.4);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background: rgba(0, 229, 255, 0.1);
  transform: translateY(-2px);
}

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

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
  opacity: 0.5;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(10, 15, 22, 0.2), var(--color-bg-dark));
  z-index: -1;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  text-align: center;
  z-index: 1;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero h1 span {
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

/* Sections */
.section {
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

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

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

/* Services Grid */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  padding: 2rem;
  text-align: center;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 35px rgba(0, 229, 255, 0.1);
  border-color: rgba(0, 229, 255, 0.3);
}

.card-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  color: var(--color-primary);
}

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

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

/* Portfolio Grid */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 2rem;
}

.portfolio-item {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  group: portfolio;
}

.portfolio-item img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.portfolio-item:hover img {
  transform: scale(1.05);
}

.portfolio-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 2rem;
  background: linear-gradient(to top, rgba(10, 15, 22, 0.9), transparent);
  transform: translateY(20px);
  opacity: 0;
  transition: all 0.4s ease;
}

.portfolio-item:hover .portfolio-overlay {
  transform: translateY(0);
  opacity: 1;
}

.portfolio-overlay h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.portfolio-overlay p {
  color: var(--color-primary);
  font-weight: 500;
}

/* Form Styles */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
  padding: 3rem;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-group input, .form-group textarea {
  width: 100%;
  padding: 1rem;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: #fff;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: rgba(255, 255, 255, 0.1);
}

/* Footer */
footer {
  text-align: center;
  padding: 3rem 2rem;
  border-top: 1px solid var(--glass-border);
  margin-top: 4rem;
}

footer p {
  color: var(--color-text-muted);
}

/* Page Header (for subpages) */
.page-header {
  padding: 8rem 2rem 4rem;
  text-align: center;
  background: linear-gradient(to bottom, rgba(157, 0, 255, 0.1), transparent);
}

.page-header h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.page-header p {
  color: var(--color-text-muted);
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Mobile Navigation */
.mobile-menu-btn {
  display: none;
  font-size: 1.5rem;
  color: var(--color-text);
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1000;
}

/* Responsive */
@media (max-width: 768px) {
  .mobile-menu-btn {
    display: block;
  }
  
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 250px;
    height: 100vh;
    background: rgba(10, 15, 22, 0.95);
    backdrop-filter: blur(15px);
    flex-direction: column;
    padding: 6rem 2rem 2rem;
    transition: right 0.4s ease;
    border-left: 1px solid var(--glass-border);
    z-index: 900;
    overflow-y: auto;
  }

  .nav-links.active {
    right: 0;
  }
  
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .portfolio-item img {
    height: 250px;
  }

  .portfolio-overlay {
    opacity: 1;
    transform: translateY(0);
    padding: 1.5rem 1rem 1rem;
    background: linear-gradient(to top, rgba(10, 15, 22, 0.95) 10%, rgba(10, 15, 22, 0.7) 60%, transparent);
  }

  .portfolio-overlay h3 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 2rem 1.5rem;
  }

  .page-header {
    padding: 6rem 1rem 3rem;
  }
}