:root {
  --hue: 230;
  --bg-color: hsl(var(--hue), 50%, 5%);
  --bg-secondary: hsl(var(--hue), 50%, 8%);
  --accent-blue: hsl(195, 100%, 50%);
  --accent-purple: hsl(280, 100%, 65%);
  --text-main: hsl(0, 0%, 95%);
  --text-muted: hsl(0, 0%, 75%);
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
}

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

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

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

/* Header */
header {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  transition: all 0.4s ease;
}

header.scrolled {
  background: rgba(10, 12, 21, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 1rem 5%;
  border-bottom: 1px solid var(--glass-border);
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -1px;
  background: linear-gradient(to right, var(--accent-blue), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-links a {
  font-weight: 500;
  font-size: 1rem;
  color: var(--text-main);
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  color: white !important;
  padding: 0.8rem 1.8rem;
  border-radius: 50px;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(0, 204, 255, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(183, 50, 255, 0.4);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background-image: url('../images/hero.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(180deg, rgba(8, 9, 15, 0.3) 0%, rgba(8, 9, 15, 0.9) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 0 20px;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  line-height: 1.1;
  background: linear-gradient(to right, #fff, var(--text-muted));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
}

/* Services */
.section {
  padding: 6rem 5%;
}

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

.section-title h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.service-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform 0.4s ease, border-color 0.4s;
}

.service-card:hover {
  transform: translateY(-10px);
  border-color: rgba(0, 204, 255, 0.5);
}

.service-img {
  height: 220px;
  width: 100%;
  object-fit: cover;
  border-bottom: 1px solid var(--glass-border);
}

.service-content {
  padding: 2rem;
}

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

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

/* Testimonials */
.testimonials {
  background: var(--bg-secondary);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.testimonial-card {
  background: var(--glass-bg);
  padding: 2rem;
  border-radius: 20px;
  border: 1px solid var(--glass-border);
  position: relative;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 10px;
  left: 20px;
  font-size: 4rem;
  font-family: serif;
  color: var(--accent-purple);
  opacity: 0.3;
}

.testimonial-card p {
  font-style: italic;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 2;
  color: var(--text-muted);
}

.client-name {
  font-weight: 700;
  color: var(--accent-blue);
}

/* Footer CTA */
.cta-section {
  text-align: center;
  padding: 6rem 5%;
  background: linear-gradient(135deg, rgba(0, 204, 255, 0.1), rgba(183, 50, 255, 0.1));
}

.cta-section h2 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--glass-border);
  color: var(--text-muted);
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

@media (max-width: 768px) {
  .hero h1 { font-size: 2.5rem; }
  .nav-links { display: none; } /* Could add a hamburger menu */
}