@import url("https://fonts.googleapis.com/css2?family=Inter:wght@200;300;400;600&family=JetBrains+Mono:wght@300;400&display=swap");

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Inter", sans-serif;
  background: #0a0a0a;
  color: #e0e0e0;
  overflow-x: hidden;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

body::-webkit-scrollbar {
  display: none;
}

html {
  scroll-behavior: smooth;
}

/* Links */
a {
  color: #999;
  text-decoration: none;
  position: relative;
  transition: color 0.3s ease;
  cursor: pointer;
  outline: none;
}

a:focus {
  outline: none;
}

a:hover {
  color: #fff;
}

a:active {
  opacity: 0.7;
}

/* Universe Background */
.universe {
  position: relative;
  width: 100%;
  min-height: 100vh;
  background: radial-gradient(
    ellipse at top,
    #1a1a2e 0%,
    #0a0a0a 50%,
    #000 100%
  );
}

/* Particle System */
.particles {
  position: fixed;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  pointer-events: none;
  top: 0;
  left: 0;
  z-index: 1;
}

.particle {
  position: absolute;
  top: 0;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  pointer-events: none;
  animation: float 20s infinite linear;
  animation-fill-mode: backwards;
}

@keyframes float {
  0% {
    transform: translateY(100vh) translateX(0);
    opacity: 0;
  }
  5% {
    opacity: 0.5;
  }
  95% {
    opacity: 0.5;
  }
  100% {
    transform: translateY(-100vh) translateX(100px);
    opacity: 0;
  }
}

/* Sections */
.section {
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 60px 20px;
  opacity: 0;
  transform: translateY(30px);
  transition: all 1s ease-out;
  z-index: 2;
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

.section-content {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
}

/* Progress Indicator */
.progress-indicator {
  position: fixed;
  right: 40px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transition: all 0.3s;
  cursor: pointer;
}

.dot.active {
  background: rgba(255, 255, 255, 0.8);
  transform: scale(1.5);
}

/* Hero Section */
.hero {
  flex-direction: column;
  text-align: center;
  padding-top: 20vh;
}

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

.tagline {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(14px, 2vw, 18px);
  color: #888;
  letter-spacing: 2px;
  margin-bottom: 30px;
}

h1 {
  font-size: clamp(48px, 10vw, 120px);
  font-weight: 300;
  letter-spacing: -2px;
  background: linear-gradient(135deg, #fff 0%, #888 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  font-size: clamp(18px, 3vw, 32px);
  color: #999;
  font-weight: 300;
  margin-top: 20px;
}

/* Section Titles */
.section-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 200;
  margin-bottom: 40px;
  color: #fff;
  letter-spacing: -1px;
}

/* Typography */
.highlight {
  color: #fff;
  font-weight: 400;
}

p {
  line-height: 1.8;
  color: #b0b0b0;
  font-weight: 300;
  font-size: clamp(15px, 1.3vw, 18px);
  margin-bottom: 20px;
}

/* Quote Callouts */
.quote-callout,
.quote {
  background: rgba(255, 255, 255, 0.02);
  border-left: 2px solid rgba(255, 255, 255, 0.2);
  padding: 25px 30px;
  margin: 30px 0;
  border-radius: 4px;
  transition: all 0.3s;
}

.quote-callout:hover,
.quote:hover {
  background: rgba(255, 255, 255, 0.03);
  border-left-color: rgba(255, 255, 255, 0.4);
}

.quote-text {
  font-size: clamp(14px, 1.2vw, 17px);
  line-height: 1.7;
  margin-bottom: 15px;
  color: #ccc;
  font-style: italic;
}

.quote-author {
  font-weight: 400;
  font-style: normal;
  color: #888;
  font-size: clamp(13px, 1.1vw, 15px);
}

/* Scroll Trigger */
.scroll-trigger {
  height: 200px;
  width: 100%;
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-trigger-hint {
  color: #555;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  animation: fadeInOut 3s infinite;
  cursor: default;
}

@keyframes fadeInOut {
  0%,
  100% {
    opacity: 0;
  }
  50% {
    opacity: 0.6;
  }
}

.arrow-down {
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(5px);
  }
}

/* Animations */
@keyframes fadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .progress-indicator {
    right: 20px;
  }

  .section {
    padding: 40px 20px;
  }

  .hero {
    padding-top: 15vh;
  }
}