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

:root {
  --c-bg: #050505;
  --c-surface: #0f1115;
  --c-surface-raised: #1a1d23;
  --c-border: #2a2e35;
  --c-border-hover: #3d424b;
  --c-text-main: #e6edf3;
  --c-text-muted: #8b949e;
  --c-accent: #00F0FF;
  --c-accent-dim: rgba(0, 240, 255, 0.1);
  --c-purple: #8A2BE2;
  --c-purple-glow: rgba(138, 43, 226, 0.4);
  
  --fs-sm: clamp(0.8rem, 0.9vw, 0.9rem);
  --fs-base: clamp(1rem, 1.1vw, 1.125rem);
  --fs-lg: clamp(1.25rem, 1.5vw, 1.5rem);
  --fs-xl: clamp(2rem, 4vw, 3.5rem);
  --fs-hero: clamp(2.5rem, 6vw, 5rem);
  
  --sp-sm: 1rem;
  --sp-md: 2rem;
  --sp-lg: 4rem;
  --sp-xl: 8rem;
  
  --radius: 6px;
  --radius-lg: 12px;
  
  --font-main: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --ease: cubic-bezier(0.23, 1, 0.32, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--c-bg);
  color: var(--c-text-main);
  font-family: var(--font-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--c-text-main);
}

h1 { font-size: var(--fs-hero); font-family: var(--font-mono); }
h2 { font-size: var(--fs-xl); margin-bottom: var(--sp-md); }
h3 { font-size: var(--fs-lg); margin-bottom: var(--sp-sm); }

p {
  color: var(--c-text-muted);
  margin-bottom: var(--sp-md);
  max-width: 65ch;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

/* Utilities */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding-inline: clamp(1rem, 5vw, 4rem);
}

.text-accent { color: var(--c-accent); }
.text-purple { color: var(--c-purple); }
.font-mono { font-family: var(--font-mono); }
.bg-surface { background-color: var(--c-surface); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8em 1.8em;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.3s var(--ease);
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--c-accent);
  color: var(--c-bg);
  box-shadow: 0 0 15px var(--c-accent-dim);
}

.btn-primary:hover {
  background-color: #fff;
  box-shadow: 0 0 25px rgba(0, 240, 255, 0.4);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border-color: var(--c-border);
  color: var(--c-text-main);
}

.btn-outline:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
  box-shadow: 0 0 15px var(--c-accent-dim);
}

/* Header / Nav */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(5, 5, 5, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
  padding-block: var(--sp-sm);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.05em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-mark {
  color: var(--c-accent);
  display: inline-block;
  width: 20px;
  height: 20px;
  background: var(--c-accent);
  mask: linear-gradient(45deg, transparent 50%, #000 50%);
  -webkit-mask: linear-gradient(45deg, transparent 50%, #000 50%);
}

.nav-list {
  display: flex;
  gap: var(--sp-md);
  list-style: none;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--c-accent);
  transition: width 0.3s var(--ease);
}

.nav-link:hover::after {
  width: 100%;
}

@media (max-width: 768px) {
  .nav-list { display: none; }
}

/* Hero Section */
.hero {
  padding-block: clamp(120px, 15vw, 200px) var(--sp-xl);
  position: relative;
  overflow: hidden;
}

/* Subtle background grid */
.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: 
    linear-gradient(var(--c-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.07;
  mask-image: radial-gradient(circle at center, black, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at center, black, transparent 80%);
  z-index: -1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--sp-lg);
  align-items: center;
}

.hero-badge {
  display: inline-block;
  padding: 0.4em 0.8em;
  border: 1px solid var(--c-purple);
  color: var(--c-purple);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  border-radius: 50px;
  margin-bottom: var(--sp-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-title {
  margin-bottom: var(--sp-md);
  background: linear-gradient(180deg, #fff, #8b949e);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: var(--fs-lg);
  margin-bottom: var(--sp-lg);
}

.hero-actions {
  display: flex;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-xl);
}

.hero-visual {
  position: relative;
  height: 400px;
  background: var(--c-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Abstract UI representation for hero */
.ui-mockup {
  width: 80%;
  height: 70%;
  border: 1px dashed var(--c-border-hover);
  position: relative;
}
.ui-node {
  position: absolute;
  width: 40px; height: 40px;
  background: var(--c-surface-raised);
  border: 1px solid var(--c-accent);
  border-radius: 4px;
}
.ui-node:nth-child(1) { top: 20%; left: 10%; }
.ui-node:nth-child(2) { top: 50%; left: 40%; border-color: var(--c-purple); }
.ui-node:nth-child(3) { top: 30%; left: 70%; }
.ui-line {
  position: absolute;
  height: 1px;
  background: var(--c-border-hover);
  width: 100px;
  top: 50%; left: 20%;
  transform: rotate(-15deg);
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
}

/* Feature Cards */
.section-pad {
  padding-block: var(--sp-xl);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--sp-md);
}

.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  padding: var(--sp-md);
  border-radius: var(--radius-lg);
  transition: transform 0.3s var(--ease), border-color 0.3s;
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--c-border-hover);
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--c-accent), var(--c-purple));
  opacity: 0;
  transition: opacity 0.3s;
}

.card:hover::before {
  opacity: 1;
}

.card-icon {
  font-size: 2rem;
  margin-bottom: var(--sp-sm);
  color: var(--c-accent);
}

.card h3 {
  font-size: 1.25rem;
  color: var(--c-text-main);
  margin-bottom: 0.5rem;
}

.card p {
  font-size: 0.95rem;
  color: var(--c-text-muted);
  margin-bottom: 0;
}

/* Stats */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--sp-md);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  padding-block: var(--sp-lg);
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  color: var(--c-text-main);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-accent);
}

/* CTA */
.cta-section {
  background: linear-gradient(135deg, var(--c-surface) 0%, #1a0b2e 100%);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl) var(--sp-lg);
  text-align: center;
  border: 1px solid var(--c-border);
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--c-border);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: var(--sp-md) 0;
  text-align: left;
  color: var(--c-text-main);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::after {
  content: '+';
  color: var(--c-accent);
  font-family: var(--font-mono);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s var(--ease);
  color: var(--c-text-muted);
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding-bottom: var(--sp-md);
}

.faq-item.active .faq-question::after {
  content: '-';
}

/* Footer */
.site-footer {
  margin-top: var(--sp-xl);
  padding-block: var(--sp-lg);
  border-top: 1px solid var(--c-border);
  font-size: var(--fs-sm);
  color: var(--c-text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--sp-md);
}

.footer-col h4 {
  color: var(--c-text-main);
  margin-bottom: var(--sp-sm);
  font-size: 1rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.5rem;
}

.footer-col a:hover {
  color: var(--c-accent);
}

.footer-bottom {
  margin-top: var(--sp-lg);
  padding-top: var(--sp-md);
  border-top: 1px solid var(--c-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
}
img,svg,video{max-width:100%;height:auto}
*{box-sizing:border-box}