@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');
@import 'variables.css';

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  isolation: isolate;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background Effects - Pixelated Space Theme */
.bg-stars {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  background: var(--bg-primary);
  background-image: url('../assets/img/space-bg.png');
  background-image: image-set(
    url('../assets/img/space-bg.webp') type('image/webp'),
    url('../assets/img/space-bg.png') type('image/png')
  );
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* Nebula Overlay */
.bg-stars::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse 600px 400px at 20% 30%, rgba(0, 240, 255, 0.03) 0%, transparent 70%),
    radial-gradient(ellipse 500px 500px at 80% 70%, rgba(59, 130, 246, 0.04) 0%, transparent 60%),
    radial-gradient(ellipse 700px 350px at 50% 80%, rgba(255, 121, 0, 0.02) 0%, transparent 50%);
  animation: nebula-drift 60s ease-in-out infinite alternate;
  will-change: transform, opacity;
  pointer-events: none;
  z-index: 1;
}

/* Twinkling Stars Overlay */
.bg-stars::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 6px;
  background: transparent;
  border-radius: 50%;
  box-shadow:
    25vw 10vh 0 0.5px #fff, 45vw 25vh 0 0.5px #fff, 70vw 15vh 0 0.5px #fff,
    15vw 40vh 0 0.5px #fff, 85vw 35vh 0 0.5px #fff, 30vw 60vh 0 0.5px #fff,
    60vw 80vh 0 0.5px #fff, 90vw 55vh 0 0.5px #fff, 5vw 75vh 0 0.5px #fff,
    50vw 90vh 0 0.5px #fff, 75vw 5vh 0 0.5px #fff, 35vw 45vh 0 0.5px #fff,
    95vw 85vh 0 0.5px #fff, 10vw 20vh 0 0.5px #fff, 65vw 50vh 0 0.5px #fff,
    20vw 85vh 0 0.5px #fff, 80vw 10vh 0 0.5px #fff, 40vw 70vh 0 0.5px #fff,
    55vw 30vh 0 0.5px #fff, 88vw 92vh 0 0.5px #fff, 12vw 55vh 0 0.5px #fff,
    72vw 42vh 0 0.5px #fff, 3vw 88vh 0 0.5px #fff, 48vw 8vh 0 0.5px #fff,
    92vw 65vh 0 0.5px #fff, 28vw 35vh 0 0.5px #fff, 68vw 78vh 0 0.5px #fff,
    8vw 12vh 0 0.5px #fff, 58vw 95vh 0 0.5px #fff, 83vw 48vh 0 0.5px #fff,
    18vw 68vh 0 0.5px #fff, 78vw 23vh 0 0.5px #fff, 33vw 52vh 0 0.5px #fff,
    63vw 3vh 0 0.5px #fff, 93vw 38vh 0 0.5px #fff, 13vw 82vh 0 0.5px #fff,
    53vw 18vh 0 0.5px #fff, 38vw 93vh 0 0.5px #fff, 73vw 58vh 0 0.5px #fff,
    98vw 78vh 0 0.5px #fff, 23vw 3vh 0 0.5px #fff, 43vw 33vh 0 0.5px #fff,
    10vw 5vh 0 0.3px rgba(200, 220, 255, 0.8), 30vw 20vh 0 0.3px rgba(200, 220, 255, 0.6),
    55vw 12vh 0 0.3px rgba(200, 220, 255, 0.7), 80vw 40vh 0 0.3px rgba(200, 220, 255, 0.5),
    5vw 55vh 0 0.3px rgba(200, 220, 255, 0.8), 25vw 75vh 0 0.3px rgba(200, 220, 255, 0.6),
    45vw 85vh 0 0.3px rgba(200, 220, 255, 0.7), 65vw 65vh 0 0.3px rgba(200, 220, 255, 0.5),
    85vw 90vh 0 0.3px rgba(200, 220, 255, 0.8), 15vw 30vh 0 0.3px rgba(200, 220, 255, 0.6),
    35vw 50vh 0 0.3px rgba(200, 220, 255, 0.7), 50vw 70vh 0 0.3px rgba(200, 220, 255, 0.5),
    70vw 88vh 0 0.3px rgba(200, 220, 255, 0.8), 90vw 15vh 0 0.3px rgba(200, 220, 255, 0.6),
    20vw 95vh 0 0.3px rgba(200, 220, 255, 0.7), 40vw 5vh 0 0.3px rgba(200, 220, 255, 0.5),
    60vw 35vh 0 0.3px rgba(200, 220, 255, 0.8), 95vw 60vh 0 0.3px rgba(200, 220, 255, 0.6),
    8vw 45vh 0 0.3px rgba(200, 220, 255, 0.7), 33vw 80vh 0 0.3px rgba(200, 220, 255, 0.5),
    58vw 55vh 0 0.3px rgba(200, 220, 255, 0.8), 78vw 25vh 0 0.3px rgba(200, 220, 255, 0.6),
    3vw 70vh 0 0.3px rgba(200, 220, 255, 0.7), 28vw 40vh 0 0.3px rgba(200, 220, 255, 0.5),
    48vw 60vh 0 0.3px rgba(200, 220, 255, 0.8), 68vw 8vh 0 0.3px rgba(200, 220, 255, 0.6),
    88vw 48vh 0 0.3px rgba(200, 220, 255, 0.7), 13vw 18vh 0 0.3px rgba(200, 220, 255, 0.5),
    38vw 78vh 0 0.3px rgba(200, 220, 255, 0.8), 63vw 98vh 0 0.3px rgba(200, 220, 255, 0.6),
    93vw 28vh 0 0.3px rgba(200, 220, 255, 0.7), 18vw 58vh 0 0.3px rgba(200, 220, 255, 0.5),
    43vw 3vh 0 0.3px rgba(200, 220, 255, 0.8), 53vw 88vh 0 0.3px rgba(200, 220, 255, 0.6);
  animation: twinkle-1 4s ease-in-out infinite, twinkle-2 6s ease-in-out infinite;
  animation-delay: 0s, -2s;
  will-change: opacity;
  pointer-events: none;
  z-index: 2;
}

@keyframes nebula-drift {
  0% { transform: translate(0, 0) rotate(0deg); opacity: 1; }
  50% { transform: translate(2%, 1%) rotate(1deg); opacity: 0.85; }
  100% { transform: translate(-1%, 2%) rotate(-0.5deg); opacity: 1; }
}

@keyframes twinkle-1 {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

@keyframes twinkle-2 {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 0.3; }
}

/* Mobile: fewer stars for performance */
@media (max-width: 768px) {
  .bg-stars::after {
    box-shadow:
      25vw 10vh 0 0.5px #fff, 45vw 25vh 0 0.5px #fff, 70vw 15vh 0 0.5px #fff,
      15vw 40vh 0 0.5px #fff, 85vw 35vh 0 0.5px #fff, 30vw 60vh 0 0.5px #fff,
      60vw 80vh 0 0.5px #fff, 90vw 55vh 0 0.5px #fff, 5vw 75vh 0 0.5px #fff,
      50vw 90vh 0 0.5px #fff, 10vw 5vh 0 0.3px rgba(200, 220, 255, 0.8),
      30vw 20vh 0 0.3px rgba(200, 220, 255, 0.6), 55vw 12vh 0 0.3px rgba(200, 220, 255, 0.7),
      80vw 40vh 0 0.3px rgba(200, 220, 255, 0.5), 5vw 55vh 0 0.3px rgba(200, 220, 255, 0.8),
      25vw 75vh 0 0.3px rgba(200, 220, 255, 0.6), 45vw 85vh 0 0.3px rgba(200, 220, 255, 0.7),
      65vw 65vh 0 0.3px rgba(200, 220, 255, 0.5), 85vw 90vh 0 0.3px rgba(200, 220, 255, 0.8),
      15vw 30vh 0 0.3px rgba(200, 220, 255, 0.6);
  }
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.2rem; color: var(--text-secondary); font-weight: bold;}


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

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-short);
}

/* Utilities */
.text-gradient-cyan {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}


.text-gradient-purple {
  background: var(--gradient-purple);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.font-mono { font-family: var(--font-mono); }
.text-center { text-align: center; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mt-16 { margin-top: 4rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-16 { margin-bottom: 4rem; }

/* Sections */
section {
  padding: 6rem 0;
}

/* Scroll Fades */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

/* Typing Cursor */
.typing-cursor {
  display: inline-block;
  margin-left: 2px;
  font-weight: 700;
  color: var(--accent-cyan);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}