@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Bebas+Neue&family=Inter:wght@300;400;500&display=swap');

/* ─── Reset & Root ──────────────────────────────────────────────────────── */

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

:root {
  --black:      #080b0e;
  --deep:       #0d1117;
  --surface:    #111820;
  --surface2:   #161f2a;
  --border:     #1e2d3d;
  --border2:    #243447;
  --accent:     #f0c040;
  --accent-dim: #b8922e;
  --accent-glow:rgba(240,192,64,0.12);
  --text:       #c9d1d9;
  --muted:      #5a6a7a;
  --faint:      #2a3a4a;
  --danger:     #ff4d4d;
  --ok:         #28c840;
  --mono:       'Share Tech Mono', monospace;
  --display:    'Bebas Neue', sans-serif;
  --body:       'Inter', sans-serif;
  --sidebar-w:  260px;
  --header-h:   52px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--text);
  font-family: var(--body);
  font-size: 15px;
  line-height: 1.7;
  min-height: 100vh;
}

/* Scanline overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.05) 2px,
    rgba(0,0,0,0.05) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

.sf-layout {
  display: flex;
  min-height: 100vh;
}

.sf-sidebar {
  width: var(--sidebar-w);
  background: var(--deep);
  border-right: 1px solid var(--border);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 200;
  display: flex;
  flex-direction: column;
}

.sf-sidebar::-webkit-scrollbar { width: 4px; }
.sf-sidebar::-webkit-scrollbar-track { background: transparent; }
.sf-sidebar::-webkit-scrollbar-thumb { background: var(--border2); }

.sf-brand {
  padding: 1.25rem 1.25rem 1rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.sf-brand-top {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.sf-brand-slash {
  font-family: var(--display);
  font-size: 1.1rem;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.sf-brand-name {
  font-family: var(--display);
  font-size: 1.4rem;
  color: #fff;
  letter-spacing: 0.08em;
  line-height: 1;
}

.sf-brand-meta {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.sf-brand-status {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.6rem;
}

.sf-dot-live {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 6px var(--ok);
  animation: sf-pulse 2s ease-in-out infinite;
}

.sf-brand-status span {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--muted);
  letter-spacing: 0.08em;
}

@keyframes sf-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.35; }
}

.sf-search-wrap {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.sf-search-wrap form {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.4rem 0.75rem;
  transition: border-color 0.2s;
}

.sf-search-wrap form:focus-within {
  border-color: var(--accent-dim);
}

.sf-search-icon {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  flex-shrink: 0;
}

.sf-search-wrap input {
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.72rem;
  width: 100%;
  letter-spacing: 0.04em;
}

.sf-search-wrap input::placeholder { color: var(--muted); }

.sf-nav {
  padding: 0.75rem 0 2rem;
  flex: 1;
}

.sf-nav ul {
  list-style: none;
}

.sf-nav > ul {
  padding: 0 0.75rem;
}

.sf-nav li.sf-section > span {
  display: block;
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--accent-dim);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 1rem 0.5rem 0.4rem;
}

.sf-nav li a {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  text-decoration: none;
  padding: 0.35rem 0.5rem;
  letter-spacing: 0.03em;
  border-left: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.sf-nav li a::before {
  content: '›';
  color: var(--faint);
  font-size: 0.9rem;
  transition: color 0.15s;
}

.sf-nav li a:hover {
  color: var(--text);
  background: rgba(240,192,64,0.04);
  border-left-color: var(--border2);
}

.sf-nav li a:hover::before {
  color: var(--accent-dim);
}

.sf-nav li.active > a {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-glow);
}

.sf-nav li.active > a::before {
  color: var(--accent);
}

.sf-nav li ul {
  padding-left: 1rem;
  border-left: 1px solid var(--border);
  margin-left: 0.75rem;
}

.sf-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--deep);
  border-bottom: 1px solid var(--border);
  align-items: center;
  padding: 0 1rem;
  gap: 1rem;
  z-index: 300;
}

.sf-menu-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  padding: 0.3rem 0.6rem;
  cursor: pointer;
  letter-spacing: 0.05em;
  transition: color 0.2s, border-color 0.2s;
}

.sf-menu-btn:hover { color: var(--accent); border-color: var(--accent-dim); }

.sf-header-brand {
  font-family: var(--display);
  font-size: 1.2rem;
  color: #fff;
  letter-spacing: 0.08em;
}

.sf-header-brand span { color: var(--accent); }

.sf-main {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.sf-content-wrap {
  max-width: 820px;
  padding: 3rem 3.5rem 5rem;
  width: 100%;
}

.sf-page-eyebrow {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sf-page-eyebrow::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 1px;
  background: var(--accent-dim);
}

.sf-content h1 {
  font-family: var(--display);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  letter-spacing: 0.05em;
  line-height: 0.95;
  color: #fff;
  margin: 0 0 1.25rem;
}

.sf-content h1::after {
  content: '';
  display: block;
  width: 3rem;
  height: 2px;
  background: var(--accent);
  margin-top: 0.75rem;
}

.sf-content h2 {
  font-family: var(--display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  letter-spacing: 0.06em;
  color: #fff;
  margin: 2.5rem 0 0.85rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.sf-content h3 {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 2rem 0 0.65rem;
}

.sf-content h4, .sf-content h5, .sf-content h6 {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text);
  letter-spacing: 0.06em;
  margin: 1.5rem 0 0.5rem;
}

.sf-content p {
  margin-bottom: 1rem;
  color: var(--text);
  font-weight: 300;
}

.sf-content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-dim);
  transition: color 0.2s, border-color 0.2s;
}

.sf-content a:hover {
  color: #fff;
  border-bottom-color: #fff;
}

.sf-content strong { color: #fff; font-weight: 500; }
.sf-content em { color: var(--accent-dim); font-style: normal; }

.sf-content code {
  font-family: var(--mono);
  font-size: 0.8em;
  color: var(--accent);
  background: rgba(240,192,64,0.08);
  padding: 0.1em 0.4em;
  border: 1px solid rgba(240,192,64,0.15);
}

.sf-content pre {
  background: var(--deep);
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  position: relative;
}

.sf-content pre::before {
  content: '$ ';
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--accent-dim);
  position: absolute;
  top: 0.75rem;
  left: 1.5rem;
}

.sf-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text);
  font-size: 0.82rem;
  line-height: 1.6;
  display: block;
  padding-top: 1.2rem;
}

.sf-content blockquote {
  border-left: 2px solid var(--accent);
  padding: 0.75rem 1.25rem;
  background: rgba(240,192,64,0.04);
  margin: 1.5rem 0;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--muted);
}

.sf-content table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 0.78rem;
  margin: 1.5rem 0;
}

.sf-content th {
  background: var(--surface);
  color: var(--accent);
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.6rem 1rem;
  border: 1px solid var(--border);
  text-align: left;
}

.sf-content td {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  color: var(--text);
}

.sf-content tr:nth-child(even) td {
  background: rgba(255,255,255,0.02);
}

.sf-content ul, .sf-content ol {
  padding-left: 1.25rem;
  margin-bottom: 1rem;
}

.sf-content li {
  margin-bottom: 0.3rem;
}

.sf-content ul li::marker {
  color: var(--accent);
  content: '› ';
}

.sf-content ol li::marker {
  color: var(--accent-dim);
  font-family: var(--mono);
  font-size: 0.85em;
}

.sf-content hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, var(--accent-dim), transparent);
  margin: 2.5rem 0;
}

.sf-footer {
  margin-top: auto;
  padding: 1.25rem 3.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.sf-footer-left {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.sf-footer-left a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.sf-footer-left a:hover { color: var(--accent); }

.sf-footer-prompt {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--faint);
  letter-spacing: 0.04em;
}

.sf-cursor {
  display: inline-block;
  width: 6px;
  height: 0.85em;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: sf-blink 1.1s step-end infinite;
  margin-left: 1px;
  opacity: 0.5;
}

@keyframes sf-blink {
  0%, 100% { opacity: 0.5; }
  50%       { opacity: 0; }
}

.sf-search-page input[type=search] {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 0.65rem 1rem;
  width: 100%;
  max-width: 480px;
  outline: none;
  transition: border-color 0.2s;
}

.sf-search-page input[type=search]:focus {
  border-color: var(--accent-dim);
}

@media (max-width: 768px) {
  .sf-header { display: flex; }

  .sf-sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    top: var(--header-h);
  }

  .sf-sidebar.open {
    transform: translateX(0);
  }

  .sf-main {
    margin-left: 0;
    padding-top: var(--header-h);
  }

  .sf-content-wrap {
    padding: 2rem 1.25rem 4rem;
  }

  .sf-footer {
    padding: 1rem 1.25rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}