:root {
  --color-bg: linear-gradient(135deg, #1f2937 0%, #111827 100%);
  --color-surface: linear-gradient(135deg, #374151 0%, #1f2937 100%);
  --color-text: #f9fafb;
  --color-text-muted: #d1d5db;
  --color-accent: #8b5cf6;
  --color-accent-hover: #7c3aed;
  --color-secondary: #ec4899;
  --color-border: #4b5563;

  --spacing-xs: clamp(0.5rem, 2vw, 1rem);
  --spacing-sm: clamp(1rem, 3vw, 1.5rem);
  --spacing-md: clamp(1.5rem, 4vw, 2.5rem);
  --spacing-lg: clamp(2rem, 6vw, 4rem);
  --spacing-xl: clamp(3rem, 8vw, 6rem);

  --text-xs: clamp(0.875rem, 2.5vw, 1rem);
  --text-sm: clamp(1rem, 3vw, 1.125rem);
  --text-base: clamp(1.125rem, 3.5vw, 1.25rem);
  --text-lg: clamp(1.25rem, 4vw, 1.5rem);
  --text-xl: clamp(1.5rem, 5vw, 2rem);
  --text-2xl: clamp(2rem, 6vw, 3rem);

  --radius: 12px;
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, Inter, ui-sans-serif, system-ui, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-size: var(--text-base);
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 20% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
  z-index: -1;
  animation: backgroundShift 20s ease-in-out infinite;
}

@keyframes backgroundShift {
  0%,
  100% {
    transform: translateX(0) translateY(0);
  }
  50% {
    transform: translateX(-10px) translateY(-5px);
  }
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: linear-gradient(135deg, rgba(31, 41, 55, 0.95) 0%, rgba(17, 24, 39, 0.95) 100%);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-brand i {
  color: var(--color-accent);
  font-size: 1.2em;
}

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

.nav-link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--text-xs);
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-text);
  background: rgba(139, 92, 246, 0.1);
  transform: translateY(-1px);
  outline: none;
}

.nav-link i {
  font-size: 0.9em;
  opacity: 0.8;
}

@media (max-width: 768px) {
  .nav-links {
    gap: var(--spacing-sm);
  }

  .nav-link {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
  }

  .nav-link span {
    display: none;
  }
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-xl) 0;
  position: relative;
}

.hero-bg-elements {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.floating-element {
  position: absolute;
  color: var(--color-accent);
  font-size: 2rem;
  opacity: 0.1;
  animation: float 6s ease-in-out infinite;
}

.floating-element:nth-child(2) {
  animation-delay: -2s;
}
.floating-element:nth-child(3) {
  animation-delay: -4s;
}
.floating-element:nth-child(4) {
  animation-delay: -1s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(5deg);
  }
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: var(--text-2xl);
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
  max-width: 800px;
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-button {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-secondary) 100%);
  color: white;
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
  position: relative;
  overflow: hidden;
}

.cta-button::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.cta-button:hover::before {
  left: 100%;
}

.cta-button:hover,
.cta-button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(139, 92, 246, 0.4);
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

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

.section-title {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.section-title i {
  color: var(--color-accent);
  font-size: 0.8em;
}

.content {
  max-width: 700px;
  margin: 0 auto;
}

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

.content p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-muted);
}

.content p:last-child {
  margin-bottom: 0;
}

/* Focus Grid */
.focus-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  max-width: 1000px;
  margin: 0 auto;
}

.focus-card {
  background: var(--color-surface);
  padding: var(--spacing-md);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.focus-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-secondary));
}

.focus-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  border-color: var(--color-accent);
}

.focus-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
  font-size: 1.5rem;
  color: white;
}

.focus-card h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.focus-card p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin: 0;
}

/* Contact */
.contact-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-surface);
  color: var(--color-text);
  text-decoration: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius);
  border: 2px solid var(--color-border);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.contact-button::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  transition: left 0.3s ease;
  z-index: -1;
}

.contact-button:hover::before {
  left: 0;
}

.contact-button:hover,
.contact-button:focus-visible {
  color: white;
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(139, 92, 246, 0.3);
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
  text-align: center;
}

.footer p {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

/* Focus states for accessibility */
*:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Smooth scrolling offset for fixed nav */
section {
  scroll-margin-top: 80px;
}

@media (max-width: 768px) {
  .nav-links {
    gap: var(--spacing-sm);
  }

  .nav-link {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
  }

  .nav-link span {
    display: none;
  }

  .hero-bg-elements {
    display: none;
  }

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

  .section-title {
    flex-direction: column;
    gap: 0.5rem;
  }
}