/* ================================================================
   weCodesPro — Global Design System
   Futuristic Dark/Light Theme with Neon Accents
================================================================ */

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

/* ── Root Variables ─────────────────────────────────────────── */
:root {
  /* Dark Theme (default) */
  --bg:        #080a0f;
  --bg2:       #0d1117;
  --bg3:       #161b22;
  --bg4:       #1c2333;
  --bg5:       #21262d;
  --border:    #2a3241;
  --border2:   #374151;
  --text:      #e2e8f0;
  --text2:     #94a3b8;
  --text3:     #64748b;
  --text4:     #475569;

  /* Accent Colors */
  --cyan:      #00e5ff;
  --cyan-dim:  rgba(0,229,255,0.12);
  --cyan-glow: rgba(0,229,255,0.25);
  --purple:    #a855f7;
  --purple-dim:rgba(168,85,247,0.12);
  --green:     #10b981;
  --green-dim: rgba(16,185,129,0.12);
  --orange:    #f59e0b;
  --orange-dim:rgba(245,158,11,0.12);
  --pink:      #ec4899;
  --pink-dim:  rgba(236,72,153,0.12);
  --red:       #ef4444;
  --blue:      #3b82f6;
  --teal:      #06b6d4;
  --gold:      #fbbf24;

  /* Code Syntax */
  --c-keyword: #c792ea;
  --c-type:    #ffcb6b;
  --c-string:  #c3e88d;
  --c-comment: #546e7a;
  --c-number:  #f78c6c;
  --c-fn:      #82aaff;
  --c-macro:   #ff5370;
  --c-op:      #89ddff;

  /* Layout */
  --sidebar-w: 270px;
  --header-h:  60px;
  --radius:    10px;
  --radius-sm: 6px;
  --radius-lg: 16px;

  /* Transitions */
  --t-fast:    0.15s ease;
  --t-mid:     0.25s ease;
  --t-slow:    0.4s ease;
}

/* ── Light Theme ─────────────────────────────────────────────── */
[data-theme="light"] {
  --bg:        #f0f4ff;
  --bg2:       #ffffff;
  --bg3:       #f8faff;
  --bg4:       #eef2ff;
  --bg5:       #e8ecf9;
  --border:    #d1d9f0;
  --border2:   #b8c3e5;
  --text:      #0f172a;
  --text2:     #334155;
  --text3:     #64748b;
  --text4:     #94a3b8;

  --cyan:      #0891b2;
  --cyan-dim:  rgba(8,145,178,0.08);
  --cyan-glow: rgba(8,145,178,0.15);
  --purple:    #7c3aed;
  --purple-dim:rgba(124,58,237,0.08);
  --green:     #059669;
  --green-dim: rgba(5,150,105,0.08);
  --orange:    #d97706;
  --orange-dim:rgba(217,119,6,0.08);
  --pink:      #db2777;
  --pink-dim:  rgba(219,39,119,0.08);

  --c-keyword: #7c3aed;
  --c-type:    #d97706;
  --c-string:  #059669;
  --c-comment: #94a3b8;
  --c-number:  #dc2626;
  --c-fn:      #2563eb;
  --c-macro:   #dc2626;
  --c-op:      #0891b2;
}

/* ── Reset ───────────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Space Grotesk', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 15px;
  transition: background var(--t-mid), color var(--t-mid);
  overflow-x: hidden;
}

/* ── Scrollbar ───────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text3); }

/* ── Typography ──────────────────────────────────────────────── */
h1, h2, h3, h4 { font-family: 'Syne', sans-serif; font-weight: 700; line-height: 1.2; }
a { color: var(--cyan); text-decoration: none; transition: color var(--t-fast); }
a:hover { color: var(--text); }
code, kbd {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  background: var(--bg4);
  color: var(--orange);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

/* ─────────────────────────────────────────────────────────────
   NAV HEADER (for content pages)
───────────────────────────────────────────────────────────── */
.top-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(8,10,15,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  z-index: 200;
  transition: background var(--t-mid), border-color var(--t-mid);
}
[data-theme="light"] .top-nav {
  background: rgba(240,244,255,0.9);
}
.top-nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}
.top-nav-logo .logo-icon {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  color: #000;
}
.top-nav-logo .logo-text {
  font-family: 'Syne', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}
.top-nav-logo .logo-text span { color: var(--cyan); }

.top-nav-breadcrumb {
  flex: 1;
  font-size: 13px;
  color: var(--text3);
  display: flex;
  align-items: center;
  gap: 6px;
}
.top-nav-breadcrumb span { color: var(--text2); }

.top-nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Theme Toggle */
.theme-toggle {
  width: 38px; height: 38px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: all var(--t-fast);
  color: var(--text2);
}
.theme-toggle:hover { background: var(--bg4); border-color: var(--cyan); color: var(--cyan); }

/* Sidebar Toggle (mobile) */
.sidebar-toggle {
  display: none;
  width: 38px; height: 38px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--text2);
  transition: all var(--t-fast);
}

/* ─────────────────────────────────────────────────────────────
   SIDEBAR
───────────────────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: var(--header-h);
  left: 0;
  bottom: 0;
  width: var(--sidebar-w);
  background: var(--bg2);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  z-index: 100;
  padding: 20px 0 40px;
  transition: transform var(--t-mid), background var(--t-mid);
}
.sidebar-section { margin-bottom: 8px; }
.sidebar-heading {
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text4);
  padding: 10px 20px 4px;
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
}
.sidebar-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 20px;
  color: var(--text3);
  font-size: 13.5px;
  border-left: 2px solid transparent;
  cursor: pointer;
  transition: all var(--t-fast);
  text-decoration: none;
}
.sidebar-item:hover { color: var(--text); background: var(--bg3); }
.sidebar-item.active {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: var(--cyan-dim);
}
.sidebar-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text4);
  min-width: 28px;
  flex-shrink: 0;
}
.sidebar-badge {
  margin-left: auto;
  font-size: 9px;
  background: var(--cyan-dim);
  color: var(--cyan);
  border: 1px solid var(--cyan-glow);
  padding: 1px 6px;
  border-radius: 3px;
  font-family: 'JetBrains Mono', monospace;
}

/* ─────────────────────────────────────────────────────────────
   MAIN CONTENT AREA
───────────────────────────────────────────────────────────── */
.content-wrap {
  margin-left: var(--sidebar-w);
  padding-top: var(--header-h);
  min-height: 100vh;
}
.content-body {
  max-width: 920px;
  padding: 48px 48px 120px;
}

/* ─────────────────────────────────────────────────────────────
   SECTIONS
───────────────────────────────────────────────────────────── */
.section {
  margin-bottom: 80px;
  scroll-margin-top: 80px;
}
.section-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.section-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--cyan);
  background: var(--cyan-dim);
  border: 1px solid var(--cyan-glow);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
  flex-shrink: 0;
}
.section-title {
  font-family: 'Syne', sans-serif;
  font-size: 26px;
  color: var(--text);
  font-weight: 700;
}

.subsection { margin-bottom: 44px; }
.subsection-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Space Grotesk', sans-serif;
}
.subsection-title::before {
  content: '';
  width: 3px;
  height: 18px;
  background: linear-gradient(180deg, var(--cyan), var(--purple));
  border-radius: 2px;
  flex-shrink: 0;
}

p { color: var(--text2); margin-bottom: 12px; }
p strong { color: var(--text); font-weight: 600; }

/* ─────────────────────────────────────────────────────────────
   CODE BLOCKS
───────────────────────────────────────────────────────────── */
.code-block {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 16px 0;
  overflow: hidden;
  position: relative;
}
.code-block::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
}
.code-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text3);
  padding: 8px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg3);
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.code-label::before {
  content: '';
  display: inline-flex;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 6px var(--cyan);
}
pre {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  line-height: 1.8;
  padding: 18px;
  overflow-x: auto;
  color: #abb2bf;
}

/* Syntax highlight classes */
.kw { color: var(--c-keyword); }
.ty { color: var(--c-type); }
.st { color: var(--c-string); }
.cm { color: var(--c-comment); font-style: italic; }
.nm { color: var(--c-number); }
.fn { color: var(--c-fn); }
.mc { color: var(--c-macro); }
.op { color: var(--c-op); }
.pn { color: #c0c5da; }
.cls { color: var(--c-type); }

/* ─────────────────────────────────────────────────────────────
   CALLOUTS
───────────────────────────────────────────────────────────── */
.callout {
  border-radius: var(--radius);
  padding: 14px 18px;
  margin: 16px 0;
  border-left: 3px solid;
  font-size: 14px;
}
.callout-title {
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 7px;
  font-family: 'JetBrains Mono', monospace;
}
.callout p { margin: 0; font-size: 13.5px; color: var(--text2); }

.callout.interview { background: var(--cyan-dim); border-color: var(--cyan); }
.callout.interview .callout-title { color: var(--cyan); }
.callout.warn { background: var(--orange-dim); border-color: var(--orange); }
.callout.warn .callout-title { color: var(--orange); }
.callout.danger { background: rgba(239,68,68,0.08); border-color: var(--red); }
.callout.danger .callout-title { color: var(--red); }
.callout.tip { background: var(--green-dim); border-color: var(--green); }
.callout.tip .callout-title { color: var(--green); }

/* ─────────────────────────────────────────────────────────────
   TABLES
───────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; margin: 16px 0; border-radius: var(--radius); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th {
  background: var(--bg3);
  color: var(--text);
  font-weight: 600;
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  letter-spacing: 0.3px;
  font-family: 'Space Grotesk', sans-serif;
}
td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text2);
  vertical-align: top;
}
tr:last-child td { border-bottom: none; }
tr:nth-child(even) td { background: rgba(255,255,255,0.015); }
[data-theme="light"] tr:nth-child(even) td { background: rgba(0,0,0,0.02); }

/* ─────────────────────────────────────────────────────────────
   MEMORY DIAGRAMS
───────────────────────────────────────────────────────────── */
.mem-diagram {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin: 16px 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  line-height: 1.8;
  color: #abb2bf;
  overflow-x: auto;
  position: relative;
}
.mem-diagram::before {
  content: 'MEM';
  position: absolute;
  top: 8px; right: 12px;
  font-size: 9px;
  color: var(--text4);
  letter-spacing: 1px;
}
.mem-hi { color: var(--cyan); }
.mem-lo { color: var(--green); }
.mem-warn { color: var(--orange); }
.mem-note { color: var(--text3); font-style: italic; }
.mem-teal { color: var(--teal); }

/* ─────────────────────────────────────────────────────────────
   BADGES
───────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 4px;
  letter-spacing: 0.3px;
  margin-right: 4px;
  vertical-align: middle;
}
.badge-green  { background: var(--green-dim); color: var(--green); border: 1px solid rgba(16,185,129,0.25); }
.badge-red    { background: rgba(239,68,68,0.1); color: var(--red); border: 1px solid rgba(239,68,68,0.25); }
.badge-amber  { background: var(--orange-dim); color: var(--orange); border: 1px solid rgba(245,158,11,0.25); }
.badge-blue   { background: rgba(59,130,246,0.1); color: var(--blue); border: 1px solid rgba(59,130,246,0.25); }
.badge-cyan   { background: var(--cyan-dim); color: var(--cyan); border: 1px solid var(--cyan-glow); }
.badge-purple { background: var(--purple-dim); color: var(--purple); border: 1px solid rgba(168,85,247,0.25); }

/* ─────────────────────────────────────────────────────────────
   RULE LIST
───────────────────────────────────────────────────────────── */
.rule-list { list-style: none; margin: 12px 0; }
.rule-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--text2);
  font-size: 14px;
  padding: 5px 0;
  border-bottom: 1px solid transparent;
}
.rule-list li:hover { color: var(--text); }
.rule-list li::before {
  content: '→';
  color: var(--cyan);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  margin-top: 2px;
  flex-shrink: 0;
}

/* ─────────────────────────────────────────────────────────────
   RULES BOX
───────────────────────────────────────────────────────────── */
.rules-box {
  background: var(--cyan-dim);
  border: 1px solid var(--cyan-glow);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 16px 0;
}
.rules-box h4 {
  color: var(--cyan);
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 10px;
}

/* ─────────────────────────────────────────────────────────────
   COMPARISON GRID
───────────────────────────────────────────────────────────── */
.cmp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 16px 0; }
.cmp-card { background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; }
.cmp-card h4 { font-size: 11px; letter-spacing: 0.5px; text-transform: uppercase; font-family: 'JetBrains Mono', monospace; margin-bottom: 10px; }
.cmp-card.good h4 { color: var(--green); }
.cmp-card.bad h4  { color: var(--red); }
.cmp-card p { font-size: 13px; color: var(--text2); margin: 0; font-family: 'JetBrains Mono', monospace; }

/* ─────────────────────────────────────────────────────────────
   PLACEHOLDER SECTION
───────────────────────────────────────────────────────────── */
.placeholder-section {
  text-align: center;
  padding: 60px 40px;
  border: 1px dashed var(--border2);
  border-radius: var(--radius-lg);
  margin: 24px 0;
  background: var(--bg2);
}
.placeholder-section .ph-icon,
.placeholder-section .placeholder-icon {
  font-size: 40px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent);
  margin-bottom: 16px;
  opacity: 0.5;
  letter-spacing: 1px;
}
.placeholder-section h3,
.placeholder-section .placeholder-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text1);
  margin-bottom: 8px;
}
.placeholder-section p,
.placeholder-section .placeholder-text {
  font-size: 14px;
  color: var(--text3);
  max-width: 400px;
  margin: 0 auto;
}

/* ─────────────────────────────────────────────────────────────
   STEP FLOW (for sequential procedures)
───────────────────────────────────────────────────────────── */
.steps { display: flex; flex-direction: column; gap: 0; margin: 16px 0; }
.step { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.step:last-child { border-bottom: none; }
.step-num {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--purple-dim);
  color: var(--purple);
  border: 1px solid rgba(168,85,247,0.3);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.step-content h4 { color: var(--text); font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.step-content p  { color: var(--text2); font-size: 13px; margin: 0; }

/* ─────────────────────────────────────────────────────────────
   RESPONSIVE
───────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .sidebar-toggle { display: flex; }
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: 8px 0 30px rgba(0,0,0,0.5);
  }
  .content-wrap { margin-left: 0; }
  .content-body { padding: 32px 24px 80px; }
  .cmp-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .content-body { padding: 24px 16px 60px; }
  .section-title { font-size: 20px; }
}

/* ─────────────────────────────────────────────────────────────
   PAGE TRANSITION
───────────────────────────────────────────────────────────── */
.page-transition {
  animation: fadeIn 0.35s ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─────────────────────────────────────────────────────────────
   VIRTUAL TABLE (vtable diagram)
───────────────────────────────────────────────────────────── */
.vtable-wrap {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 16px 0;
  font-family: 'JetBrains Mono', monospace;
}
.vt-header {
  font-size: 11px;
  padding: 8px 12px;
  background: var(--bg4);
  color: var(--pink);
  border-bottom: 1px solid var(--border);
  letter-spacing: 0.5px;
}
.vt-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 7px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 11.5px;
}
.vt-row:last-child { border-bottom: none; }
.vt-addr { color: var(--text3); font-size: 10px; }
.vt-val  { color: var(--cyan); }
.vt-ptr  { color: var(--pink); font-size: 10px; }