*, *::before, *::after { box-sizing: border-box; }
:root{
  --bg-color:#0d1117;
  --text-color:#c9d1d9;
  --header-color:#ffffff;
  --accent-color:#58a6ff;
  --border-color:#30363d;
  --code-bg:#161b22;
  --card-hover:#1f242c;
  --success-color:#2ea043;
  --font-mono:"SF Mono","Segoe UI Mono","Roboto Mono",monospace;
  --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  --max-width: 980px;
}

/* Accessibility: Skip to content */
.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent-color);
  color: var(--bg-color);
  padding: 8px 16px;
  text-decoration: none;
  z-index: 100;
  font-weight: 600;
}

.skip-to-content:focus {
  top: 0;
}

html, body{margin:0;padding:0;}
body{
  font-family:var(--font-sans);
  background:var(--bg-color);
  color:var(--text-color);
  line-height:1.6;
  display:flex;
  flex-direction:column;
  min-height:100vh;
}

a{color:var(--accent-color); text-decoration:none;}
a:hover{text-decoration:underline;}

header{
  padding:22px 20px;
  border-bottom:1px solid var(--border-color);
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:14px;
}
.brand{
  font-family:var(--font-mono);
  font-weight:700;
  color:var(--header-color);
  letter-spacing:-0.2px;
}
.status{
  font-family:var(--font-mono);
  font-size:12px;
  color:#8b949e;
  white-space:nowrap;
}
.cursor{display:inline-block; width:10px; height:12px; margin-left:3px; border-left:2px solid var(--accent-color); animation:blink 1s steps(1) infinite;}
@keyframes blink{50%{opacity:0;}}

nav{
  margin-top:10px;
  display:flex;
  gap:8px;
  flex-wrap:wrap;
}
nav a{
  font-family:var(--font-mono);
  font-size:12px;
  padding:6px 10px;
  border:1px solid var(--border-color);
  border-radius:999px;
  color:var(--text-color);
}
nav a.active, nav a:hover{
  background:var(--code-bg);
  text-decoration:none;
}

main{
  flex:1;
  width:100%;
  max-width:var(--max-width);
  margin:0 auto;
  padding:26px 20px 44px;
}

.meta{
  font-family:var(--font-mono);
  font-size:12px;
  color:#8b949e;
  margin-bottom:16px;
}

h1{
  color:var(--header-color);
  font-size:2.4rem;
  letter-spacing:-1px;
  margin:0 0 12px;
  font-weight:800;
}
h2{
  color:var(--header-color);
  font-size:1.45rem;
  letter-spacing:-0.4px;
  margin:28px 0 10px;
  font-weight:800;
}
h3{
  color:var(--header-color);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:0.06em;
  text-transform:uppercase;
  margin:22px 0 10px;
}

p{margin:0 0 14px;}
ul{margin:0 0 14px; padding-left:20px;}
li{margin:6px 0;}

.hero p{
  font-size:1.1rem;
  color:#8b949e;
  max-width: 70ch;
}

.grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:14px;
  margin-top:18px;
}
@media (max-width: 900px){
  .grid{grid-template-columns:1fr;}
}

.card{
  border:1px solid var(--border-color);
  border-radius:12px;
  padding:16px;
  background:transparent;
  transition: background .15s ease, transform .15s ease, border-color .15s ease;
}
.card:hover{
  background:var(--card-hover);
  transform:translateY(-2px);
  border-color:#3b434d;
}
.card-title{
  font-weight:800;
  color:var(--header-color);
  margin:0 0 8px;
}
.card-desc{
  color:#8b949e;
  margin:0 0 10px;
}
.tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.tag{
  font-family:var(--font-mono);
  font-size:11px;
  padding:4px 8px;
  border-radius:999px;
  border:1px solid var(--border-color);
  color:#8b949e;
}

.callout{
  border:1px solid var(--border-color);
  background:var(--code-bg);
  border-radius:12px;
  padding:14px;
  margin:18px 0;
}
.callout strong{color:var(--header-color);}

.table{
  width:100%;
  border-collapse:collapse;
  margin:10px 0 16px;
  border:1px solid var(--border-color);
  border-radius:12px;
  overflow:hidden;
}
.table th, .table td{
  padding:12px;
  border-bottom:1px solid var(--border-color);
  vertical-align:top;
}
.table th{
  font-family:var(--font-mono);
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:0.06em;
  color:#8b949e;
  background:#0f1520;
}
.table tr:last-child td{border-bottom:none;}

.btn-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:16px 0 8px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:10px 12px;
  border-radius:10px;
  border:1px solid var(--border-color);
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--header-color);
  text-decoration:none;
}
.btn.primary{
  border-color:var(--accent-color);
}
.btn:hover{background:var(--card-hover); text-decoration:none;}

hr{
  border:none;
  border-top:1px solid var(--border-color);
  margin:28px 0;
}

footer{
  border-top:1px solid var(--border-color);
  padding:18px 20px 26px;
  color:#8b949e;
  font-size:13px;
}
.footer-inner{
  max-width:var(--max-width);
  margin:0 auto;
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
}
.footer-links{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  font-family:var(--font-mono);
  font-size:12px;
}
.small{font-size:12px;color:#8b949e;font-family:var(--font-mono);}

code, pre{
  font-family:var(--font-mono);
  background:var(--code-bg);
  border:1px solid var(--border-color);
  border-radius:10px;
}
code{padding:2px 6px;}
pre{padding:12px; overflow:auto;}

/* ====================================================================
   LEAD GATE STYLES
   ==================================================================== */

/* Lead gate card container */
.lead-gate {
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  margin: 32px 0;
  background: var(--code-bg);
  text-align: center;
}

.lead-gate-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--header-color);
  margin: 0 0 8px;
  letter-spacing: -0.3px;
}

.lead-gate-subtitle {
  font-size: 0.95rem;
  color: #8b949e;
  margin: 0 0 20px;
}

/* Lead gate form */
.lead-gate-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 400px;
  margin: 0 auto;
}

.lead-gate-input {
  font-family: var(--font-sans);
  font-size: 14px;
  padding: 12px 14px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: var(--bg-color);
  color: var(--text-color);
  width: 100%;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.lead-gate-input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.15);
}

.lead-gate-input::placeholder {
  color: #6e7681;
}

.lead-gate-button {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  padding: 12px 20px;
  border: 1px solid var(--accent-color);
  border-radius: 10px;
  background: transparent;
  color: var(--accent-color);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.1s ease;
}

.lead-gate-button:hover {
  background: var(--accent-color);
  color: var(--bg-color);
}

.lead-gate-button:active {
  transform: scale(0.98);
}

.lead-gate-button:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.25);
}

.lead-gate-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Lead gate messages */
.lead-gate-error {
  font-family: var(--font-mono);
  font-size: 12px;
  color: #f85149;
  padding: 10px 12px;
  border: 1px solid #f85149;
  border-radius: 8px;
  background: rgba(248, 81, 73, 0.1);
  margin-top: 12px;
}

.lead-gate-success {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--success-color);
  padding: 10px 12px;
  border: 1px solid var(--success-color);
  border-radius: 8px;
  background: rgba(46, 160, 67, 0.1);
  margin-top: 12px;
}

.lead-gate-cta {
  margin-top: 16px;
}

.lead-gate-cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  padding: 12px 20px;
  border: 1px solid var(--accent-color);
  border-radius: 10px;
  background: var(--accent-color);
  color: var(--bg-color);
  text-decoration: none;
  transition: opacity 0.2s ease, transform 0.1s ease;
}

.lead-gate-cta-button:hover {
  opacity: 0.9;
  text-decoration: none;
  transform: translateY(-1px);
}

.lead-gate-cta-button:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.25);
}

/* Gated content - locked state */
.gated-content {
  position: relative;
}

.gated-content.is-locked {
  max-height: 200px;
  overflow: hidden;
  pointer-events: none;
  user-select: none;
}

.gated-content.is-locked::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  background: rgba(13, 17, 23, 0.3);
  z-index: 1;
}

.gated-content.is-locked::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(
    to bottom,
    rgba(13, 17, 23, 0) 0%,
    rgba(13, 17, 23, 0.8) 50%,
    rgba(13, 17, 23, 0.95) 100%
  );
  z-index: 2;
}

/* Responsive adjustments */
@media (max-width: 600px) {
  .lead-gate {
    padding: 20px 16px;
  }
  
  .lead-gate-title {
    font-size: 1.15rem;
  }
  
  .lead-gate-subtitle {
    font-size: 0.9rem;
  }
  
  .lead-gate-form {
    max-width: 100%;
  }
}

/* Breadcrumb navigation */
.breadcrumb {
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.breadcrumb a {
  color: var(--text-color);
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.breadcrumb a:hover {
  opacity: 1;
  text-decoration: none;
}

/* Utility classes */
.hidden {
  display: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Post navigation (prev/next) */
.post-navigation {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin: 32px 0;
  flex-wrap: wrap;
}

.post-nav-prev,
.post-nav-next {
  flex: 1;
  min-width: 200px;
  padding: 16px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--code-bg);
  transition: background 0.2s ease, transform 0.2s ease;
  font-size: 0.9rem;
}

.post-nav-prev:hover,
.post-nav-next:hover {
  background: var(--card-hover);
  transform: translateY(-2px);
  text-decoration: none;
}

.post-nav-next {
  text-align: right;
}

@media (max-width: 600px) {
  .post-navigation {
    flex-direction: column;
  }
  
  .post-nav-next {
    text-align: left;
  }
}