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

:root {
  --bg: #080b10;
  --bg2: #0d1117;
  --bg3: #131920;
  --surface: #161d26;
  --surface2: #1c2530;
  --border: #1e2d3d;
  --border2: #243448;
  --accent: #00d4ff;
  --accent2: #0099cc;
  --accent-glow: rgba(0, 212, 255, 0.15);
  --green: #00ff88;
  --text: #e8f0f8;
  --text2: #8899aa;
  --text3: #556677;
  --font-display: 'Unbounded', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius: 4px;
  --radius2: 8px;
  --transition: 0.2s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.7;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.4;
}

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent2); }

/* NAV */
nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(8,11,16,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 40px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo-dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,100% { opacity:1; transform:scale(1); }
  50% { opacity:0.5; transform:scale(0.8); }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text2);
  text-decoration: none;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }
.nav-links a.active { color: var(--accent); }

.nav-cta {
  background: transparent !important;
  border: 1px solid var(--accent) !important;
  color: var(--accent) !important;
  padding: 8px 20px;
  border-radius: var(--radius);
  font-size: 12px !important;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition) !important;
}
.nav-cta:hover {
  background: var(--accent-glow) !important;
  box-shadow: 0 0 20px var(--accent-glow) !important;
}
.nav-cta::after { display: none !important; }

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.nav-burger span { display: block; width: 24px; height: 2px; background: var(--text2); transition: all var(--transition); }

/* BUTTONS */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--bg);
  padding: 14px 28px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: box-shadow var(--transition), transform var(--transition);
  letter-spacing: 0.05em;
}
.btn-primary:hover { box-shadow: 0 0 30px rgba(0,212,255,0.4); transform: translateY(-1px); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text);
  padding: 14px 28px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--border2);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
  letter-spacing: 0.05em;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

/* LAYOUT */
.container { max-width: 1200px; margin: 0 auto; padding: 80px 40px; }
.container-narrow { max-width: 800px; margin: 0 auto; padding: 80px 40px; }

.section-label {
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-label::before { content: ''; display: block; width: 32px; height: 1px; background: var(--accent); }

.section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.1;
  margin-bottom: 16px;
}

.section-desc { color: var(--text2); max-width: 560px; line-height: 1.8; margin-bottom: 56px; }

/* CARDS */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  transition: border-color var(--transition), transform var(--transition);
}
.card:hover { border-color: var(--border2); transform: translateY(-3px); }

/* TAG */
.tag {
  font-size: 11px;
  padding: 3px 10px;
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: 20px;
  color: var(--text2);
}
.tag-accent { color: var(--accent); border-color: rgba(0,212,255,0.3); background: rgba(0,212,255,0.07); }

/* TERMINAL */
.terminal { background: var(--bg); border: 1px solid var(--border2); border-radius: var(--radius2); overflow: hidden; margin: 40px 0; }
.terminal-bar { background: var(--surface); padding: 10px 16px; display: flex; align-items: center; gap: 8px; border-bottom: 1px solid var(--border); }
.terminal-dot { width: 12px; height: 12px; border-radius: 50%; }
.terminal-dot.red { background: #ff5f57; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #28c840; }
.terminal-title { font-size: 12px; color: var(--text3); margin-left: 8px; }
.terminal-body { padding: 24px; font-size: 13px; line-height: 2; }
.t-prompt { color: var(--accent); }
.t-cmd { color: var(--text); }
.t-out { color: var(--text2); }
.t-green { color: var(--green); }
.t-comment { color: var(--text3); }

/* ARTICLE CONTENT */
.article-content { color: var(--text2); line-height: 1.9; }
.article-content h2 { font-family: var(--font-display); font-size: 22px; font-weight: 700; color: var(--text); margin: 48px 0 16px; letter-spacing: -0.5px; }
.article-content h3 { font-family: var(--font-display); font-size: 17px; font-weight: 600; color: var(--text); margin: 32px 0 12px; }
.article-content p { margin-bottom: 20px; }
.article-content ul, .article-content ol { margin: 0 0 20px 24px; }
.article-content li { margin-bottom: 8px; }
.article-content strong { color: var(--text); font-weight: 600; }
.article-content code { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 2px 8px; font-size: 13px; color: var(--accent); }
.article-content pre { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius2); padding: 20px; margin: 24px 0; overflow-x: auto; }
.article-content pre code { background: none; border: none; padding: 0; }
.article-content blockquote { border-left: 3px solid var(--accent); padding-left: 20px; margin: 24px 0; color: var(--text3); font-style: italic; }
.article-content a { color: var(--accent); text-decoration: none; }
.article-content a:hover { text-decoration: underline; }
.article-content .highlight-box { background: var(--surface); border: 1px solid var(--border2); border-radius: var(--radius2); padding: 20px 24px; margin: 24px 0; }
.article-content .highlight-box.green { border-color: rgba(0,255,136,0.3); background: rgba(0,255,136,0.05); }

/* FORM */
.contact-form { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius2); padding: 36px; }
.form-title { font-family: var(--font-display); font-size: 18px; font-weight: 700; margin-bottom: 8px; letter-spacing: -0.5px; }
.form-subtitle { font-size: 13px; color: var(--text3); margin-bottom: 28px; }
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 11px; color: var(--text3); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 8px; }
.form-input, .form-select, .form-textarea {
  width: 100%; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 12px 16px; font-family: var(--font-mono);
  font-size: 14px; color: var(--text); transition: border-color var(--transition); outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--accent); }
.form-input::placeholder, .form-textarea::placeholder { color: var(--text3); }
.form-select option { background: var(--surface); }
.form-textarea { height: 120px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-note { font-size: 12px; color: var(--text3); margin-top: 12px; text-align: center; }
.form-alert { padding: 14px 18px; border-radius: var(--radius); margin-bottom: 16px; font-size: 13px; display: none; }
.form-alert.success { background: rgba(0,255,136,0.08); border: 1px solid rgba(0,255,136,0.3); color: var(--green); }
.form-alert.error { background: rgba(255,80,80,0.08); border: 1px solid rgba(255,80,80,0.3); color: #ff8080; }

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  padding: 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-copy { font-size: 12px; color: var(--text3); }
.footer-links { display: flex; gap: 24px; list-style: none; }
.footer-links a { font-size: 12px; color: var(--text3); text-decoration: none; transition: color var(--transition); }
.footer-links a:hover { color: var(--accent); }

/* ANIMATIONS */
@keyframes fadeInUp { from { opacity:0; transform:translateY(24px); } to { opacity:1; transform:translateY(0); } }
.fade-up { animation: fadeInUp 0.6s ease both; }
.fade-up-1 { animation-delay: 0.1s; }
.fade-up-2 { animation-delay: 0.2s; }
.fade-up-3 { animation-delay: 0.3s; }
.fade-up-4 { animation-delay: 0.4s; }

/* BREADCRUMB */
.breadcrumb { font-size: 12px; color: var(--text3); margin-bottom: 32px; }
.breadcrumb a { color: var(--text3); text-decoration: none; transition: color var(--transition); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { margin: 0 8px; }

/* RESPONSIVE */
@media (max-width: 900px) {
  nav { padding: 0 20px; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: fixed; top: 64px; left: 0; right: 0;
    background: var(--bg2); border-bottom: 1px solid var(--border);
    padding: 24px 20px; gap: 20px;
  }
  .nav-burger { display: flex; }
  .container, .container-narrow { padding: 60px 20px; }
  .form-row { grid-template-columns: 1fr; }
  footer { padding: 24px 20px; flex-direction: column; align-items: flex-start; }
}

@media (max-width: 600px) {
  .section-title { letter-spacing: -0.5px; }
}