@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=VT323&display=swap');

/* ─── RESET & BASE ────────────────────────────── */
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Share Tech Mono', monospace;
  font-size: 13px;
  line-height: 1.55;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ─── CRT SCANLINES ───────────────────────────── */
body::before {
  content:'';
  position:fixed; top:0; left:0; right:0; bottom:0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    var(--scan) 2px,
    var(--scan) 4px
  );
  pointer-events:none;
  z-index:9999;
}

/* ─── CRT VIGNETTE ────────────────────────────── */
body::after {
  content:'';
  position:fixed; top:0; left:0; right:0; bottom:0;
  background: radial-gradient(ellipse at center,
    transparent 60%,
    var(--vignette, rgba(0,0,0,0.7)) 100%
  );
  pointer-events:none;
  z-index:9998;
}

/* ─── HEADER ──────────────────────────────────── */
#header {
  background: linear-gradient(180deg, var(--header-top, var(--bg2)) 0%, var(--bg2) 100%);
  border-bottom: 2px solid var(--glow);
  padding: 18px 24px 14px;
  position: sticky; top:0; z-index:100;
  box-shadow: 0 0 30px var(--header-shadow, rgba(0,0,0,0.3));
}

#header h1 {
  font-family: 'VT323', monospace;
  font-size: 2.4rem;
  color: var(--bright);
  text-shadow: 0 0 12px var(--glow2), 0 0 30px var(--glow);
  letter-spacing: 3px;
}

#header .subtitle {
  color: var(--dim);
  font-size: 11px;
  letter-spacing: 2px;
  margin-top: 2px;
}

#header .subtitle span { color: var(--accent); }

/* ─── BACK BUTTON ─────────────────────────────── */
.back-btn {
  position: absolute;
  top: 14px; right: 24px;
  color: var(--glow);
  text-decoration: none;
  font-family: 'VT323', monospace;
  font-size: 1.1rem;
  letter-spacing: 1px;
  border: 1px solid var(--glow-dim);
  padding: 4px 14px;
  border-radius: 2px;
  transition: all 0.15s;
  background: rgba(0,0,0,0.3);
}

.back-btn:hover {
  background: var(--glow-dim);
  border-color: var(--glow);
  text-shadow: 0 0 8px var(--glow2);
  color: var(--bright);
}

/* ─── LAYOUT ──────────────────────────────────── */
#layout { display:flex; gap:0; }

/* ─── SIDEBAR / INDEX ─────────────────────────── */
#sidebar {
  width: var(--sidebar-w, 260px);
  min-width: var(--sidebar-w, 260px);
  background: var(--panel);
  border-right: 1px solid var(--border);
  height: calc(100vh - 70px);
  overflow-y: auto;
  position: sticky;
  top: 70px;
  padding: 12px 0;
  scrollbar-width: thin;
  scrollbar-color: var(--glow-dim) var(--bg);
}

#sidebar::-webkit-scrollbar { width:5px; }
#sidebar::-webkit-scrollbar-track { background: var(--bg); }
#sidebar::-webkit-scrollbar-thumb { background: var(--glow-dim); border-radius:3px; }

.nav-head {
  font-family: 'VT323', monospace;
  font-size: 1rem;
  color: var(--accent2);
  padding: 6px 14px 4px;
  letter-spacing: 2px;
  text-shadow: 0 0 8px var(--glow-dim);
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}

.nav-section { margin-bottom: 2px; }

.nav-section-title {
  color: var(--kw);
  font-size: 10px;
  letter-spacing: 1.5px;
  padding: 6px 14px 2px;
  opacity: 0.7;
  text-transform: uppercase;
}

#sidebar a {
  display: block;
  color: var(--text);
  text-decoration: none;
  padding: 3px 14px 3px 20px;
  font-size: 11.5px;
  transition: all 0.12s;
  border-left: 2px solid transparent;
}

#sidebar a::before { content:'> '; color:var(--dim); }

#sidebar a:hover {
  color: var(--bright);
  background: var(--sidebar-hover-bg, rgba(255,255,255,0.06));
  border-left-color: var(--glow);
  text-shadow: 0 0 6px var(--glow2);
}

/* ─── MAIN CONTENT ────────────────────────────── */
#main {
  flex:1;
  padding: 20px 28px 60px;
  overflow-x: hidden;
  max-width: calc(100vw - var(--sidebar-w, 260px));
}

/* ─── SECTION ─────────────────────────────────── */
.section {
  margin-bottom: 28px;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--panel2);
  box-shadow: 0 0 18px var(--section-shadow, rgba(0,0,0,0.4));
  overflow: hidden;
}

.section-header {
  background: linear-gradient(90deg, var(--section-header-bg, var(--glow-dim)) 0%, var(--panel) 100%);
  padding: 7px 14px;
  font-family: 'VT323', monospace;
  font-size: 1.15rem;
  color: var(--bright);
  letter-spacing: 2px;
  text-shadow: 0 0 10px var(--glow2);
  border-bottom: 1px solid var(--border2);
  display:flex; align-items:center; gap:8px;
}

.section-header .icon { opacity:0.7; font-size:0.95rem; }

.section-body { padding: 12px 14px; }

/* ─── SUB-SECTION ─────────────────────────────── */
.sub { margin: 10px 0; }

.sub-title {
  color: var(--lbl);
  font-size: 12px;
  letter-spacing: 1.5px;
  border-bottom: 1px dashed var(--hr);
  margin-bottom: 6px;
  padding-bottom: 2px;
  text-transform: uppercase;
}

/* ─── CODE BLOCKS ─────────────────────────────── */
pre, code {
  font-family: 'Share Tech Mono', monospace;
}

pre {
  background: rgba(0,0,0,0.45);
  border: 1px solid var(--border);
  border-left: 3px solid var(--glow-dim);
  padding: 10px 12px;
  overflow-x: auto;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text2);
  border-radius: 1px;
  margin: 6px 0;
  white-space: pre;
  scrollbar-width: thin;
  scrollbar-color: var(--glow-dim) var(--bg);
}

pre::-webkit-scrollbar { height:4px; }
pre::-webkit-scrollbar-track { background:var(--bg); }
pre::-webkit-scrollbar-thumb { background:var(--glow-dim); }

/* ─── SYNTAX HIGHLIGHTING ─────────────────────── */
.kw  { color: var(--kw); }
.str { color: var(--str); }
.num { color: var(--num); }
.cmt { color: var(--cmt); font-style: italic; }
.lbl { color: var(--lbl); }
.hd  { color: var(--head); font-weight:bold; }
.dim { color: var(--dim); }

/* ─── TABLES ──────────────────────────────────── */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  margin: 6px 0;
}

th {
  background: var(--th-bg, rgba(255,255,255,0.06));
  color: var(--accent2);
  text-align: left;
  padding: 5px 8px;
  border: 1px solid var(--border);
  font-size: 11px;
  letter-spacing: 1px;
}

td {
  padding: 4px 8px;
  border: 1px solid var(--hr);
  vertical-align: top;
  color: var(--text2);
}

tr:nth-child(even) td { background: var(--tr-even-bg, rgba(0,0,0,0.15)); }
tr:hover td { background: var(--tr-hover-bg, rgba(255,255,255,0.03)); }

td code, th code {
  color: var(--kw);
  background: rgba(0,0,0,0.25);
  padding: 1px 4px;
  border-radius: 1px;
}

/* ─── INLINE ELEMENTS ─────────────────────────── */
p { margin: 4px 0 6px; color: var(--text); line-height: 1.6; }

.note {
  background: var(--note-bg, rgba(255,255,255,0.04));
  border-left: 3px solid var(--accent);
  padding: 6px 10px;
  margin: 6px 0;
  font-size: 11.5px;
  color: var(--text);
}

.warn {
  background: var(--warn-bg, rgba(120,30,10,0.25));
  border-left: 3px solid var(--warn-brd, #ff4422);
  padding: 6px 10px;
  margin: 6px 0;
  font-size: 11.5px;
  color: var(--warn-txt, #ffaa88);
}

/* ─── GRID LAYOUTS ────────────────────────────── */
.grid2 { display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.grid3 { display:grid; grid-template-columns:1fr 1fr 1fr; gap:12px; }

/* ─── TABLE SCROLL WRAPPER ───────────────────── */
.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 6px 0;
  scrollbar-width: thin;
  scrollbar-color: var(--glow-dim) var(--bg);
}
.table-scroll::-webkit-scrollbar { height:4px; }
.table-scroll::-webkit-scrollbar-track { background:var(--bg); }
.table-scroll::-webkit-scrollbar-thumb { background:var(--glow-dim); }
.table-scroll table { margin:0; }

/* ─── HAMBURGER BUTTON (hidden on desktop) ───── */
#menu-toggle {
  display: none;
  position: absolute;
  top: 14px; left: 14px;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--glow-dim);
  color: var(--glow);
  font-size: 1.4rem;
  padding: 4px 10px;
  border-radius: 2px;
  cursor: pointer;
  font-family: 'VT323', monospace;
  z-index: 201;
  transition: all 0.15s;
  line-height: 1;
}
#menu-toggle:hover {
  background: var(--glow-dim);
  border-color: var(--glow);
  color: var(--bright);
}

/* ─── SIDEBAR OVERLAY ────────────────────────── */
#sidebar-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.6);
  z-index: 149;
}
#sidebar-overlay.open { display:block; }

/* ─── RESPONSIVE ──────────────────────────────── */
@media(max-width:900px) {
  .grid2, .grid3 { grid-template-columns:1fr; }
  #menu-toggle { display:block; }

  #header { padding-left: 56px; }

  #sidebar {
    position: fixed;
    top: 0; left: 0;
    width: 270px; min-width: 270px;
    height: 100vh;
    z-index: 150;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    border-right: 2px solid var(--glow-dim);
  }
  #sidebar.open {
    transform: translateX(0);
  }

  #main { max-width:100vw; padding:14px; }

  pre { font-size:11px; }
}

/* ─── CURSOR BLINK ────────────────────────────── */
@keyframes blink { 0%,49%{opacity:1} 50%,100%{opacity:0} }
.cursor::after { content:'█'; animation:blink 1s infinite; color:var(--accent); }

/* ─── ANCHOR OFFSET ───────────────────────────── */
.anchor { display:block; height:70px; margin-top:-70px; visibility:hidden; }

/* ─── SCROLLBAR ───────────────────────────────── */
::-webkit-scrollbar { width:6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--glow-dim); border-radius:3px; }