/* ═══════════════════════════════════════════════
   LOGICNODES — SHARED BRAND TOKENS
   Exact match to approved index.html
═══════════════════════════════════════════════ */
:root {
  --bg:           #1C1C1E;
  --surface:      #242426;
  --surface-2:    #2C2C2E;
  --border:       #3A3A3C;
  --text:         #F5F5F7;
  --muted:        #A1A1A6;
  --faint:        #636366;
  --primary:      #C8E0F4;
  --primary-dark: #4A90C4;
  --success:      #34C759;
  --warning:      #FF9F0A;
  --error:        #FF453A;
}

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

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Noise overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* ── Nav ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 56px;
  background: rgba(28,28,30,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 900;
  display: flex;
  align-items: center;
  padding: 0 2rem;
}
.nav-inner {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo span {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
  letter-spacing: -0.01em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex: 1;
  justify-content: center;
}
.nav-links a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--faint);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color 150ms;
}
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-cta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--primary);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid var(--primary);
  padding: 0.35rem 0.75rem;
  transition: background 150ms, color 150ms;
  flex-shrink: 0;
}
.nav-cta:hover { background: var(--primary); color: var(--bg); }
.nav-cta.ghost {
  color: var(--faint);
  border-color: var(--border);
  margin-right: 0.75rem;
}
.nav-cta.ghost:hover { color: var(--text); border-color: var(--muted); background: transparent; }

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  margin-left: auto;
  padding: 4px;
  background: none;
  border: none;
}
.nav-hamburger span {
  display: block;
  width: 20px;
  height: 1px;
  background: var(--faint);
}
.nav-mobile-menu {
  display: none;
  position: fixed;
  top: 56px; left: 0; right: 0;
  background: rgba(28,28,30,0.98);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 2rem;
  z-index: 899;
  flex-direction: column;
  gap: 1.25rem;
}
.nav-mobile-menu.open { display: flex; }
.nav-mobile-menu a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--faint);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ── Scroll progress ── */
#scroll-progress {
  position: fixed; top: 0; left: 0;
  height: 1px; width: 0%;
  background: var(--primary);
  z-index: 1000;
  transition: width 0.1s linear;
}

/* ── Sections ── */
.section {
  border-top: 1px solid var(--border);
  padding: 80px 2rem;
  position: relative;
  z-index: 2;
}
.section-inner {
  max-width: 1160px;
  margin: 0 auto;
}
.section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--faint);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 1.5rem;
  display: block;
}
.section-heading {
  font-family: 'Inter', sans-serif;
  font-weight: 800;
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  color: var(--text);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}
.section-body {
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.6;
  max-width: 52ch;
}

/* ── Tables (spec / contracts) ── */
.spec-table, .contracts-table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
}
.spec-table th, .contracts-table th {
  text-align: left;
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--primary);
  color: var(--primary);
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.65rem;
}
.spec-table td, .contracts-table td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: top;
}
.spec-table tbody tr:hover td,
.contracts-table tbody tr:hover td { background: var(--surface); }
.type-col { color: var(--primary); }

/* ── Code/Receipt blocks ── */
.code-block {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1.25rem 1.5rem;
  line-height: 1.85;
  position: relative;
  overflow-x: auto;
}
.code-block::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(to bottom, transparent 0px, transparent 1px, rgba(0,0,0,0.07) 1px, rgba(0,0,0,0.07) 2px);
}
.c-key { color: var(--primary); }
.c-val { color: var(--muted); }
.c-ok  { color: var(--success); }
.c-err { color: var(--error); }
.c-dim { color: var(--faint); }

/* ── Mono button ── */
.mono-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid var(--primary);
  background: transparent;
  padding: 0.45rem 1rem;
  cursor: pointer;
  transition: background 150ms, color 150ms;
  text-decoration: none;
  display: inline-block;
}
.mono-btn:hover { background: var(--primary); color: var(--bg); }
.mono-btn.full  { width: 100%; text-align: center; display: block; }
.mono-btn.solid { background: var(--primary); color: var(--bg); }
.mono-btn.solid:hover { background: var(--primary-dark); border-color: var(--primary-dark); }

/* ── Input ── */
.field-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--faint);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 0.4rem;
}
.field-input {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  padding: 0.65rem 0.9rem;
  outline: none;
  transition: border-color 150ms;
  -webkit-appearance: none;
}
.field-input:focus { border-color: var(--primary); }
.field-input::placeholder { color: var(--faint); }

/* ── Error/info banner ── */
.err-banner {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--error);
  border: 1px solid var(--error);
  padding: 0.65rem 1rem;
  margin-bottom: 1rem;
  display: none;
}
.err-banner.visible { display: block; }
.ok-banner {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--success);
  border: 1px solid var(--success);
  padding: 0.65rem 1rem;
  margin-bottom: 1rem;
  display: none;
}
.ok-banner.visible { display: block; }

/* ── Status badge ── */
.badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border: 1px solid;
}
.badge-green  { color: var(--success); border-color: var(--success); }
.badge-blue   { color: var(--primary); border-color: var(--primary); }
.badge-amber  { color: var(--warning); border-color: var(--warning); }
.badge-red    { color: var(--error);   border-color: var(--error); }
.badge-faint  { color: var(--faint);   border-color: var(--border); }

/* ── Dashboard layout ── */
.app-shell {
  display: flex;
  height: 100vh;
  padding-top: 56px;
  overflow: hidden;
}
.app-sidebar {
  width: 200px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  z-index: 2;
}
.sidebar-section {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.sidebar-section:last-child { border-bottom: none; }
.sidebar-heading {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.58rem;
  color: var(--faint);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0 1rem;
  margin-bottom: 0.5rem;
}
.sidebar-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 1rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--faint);
  text-decoration: none;
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  transition: color 150ms, background 150ms;
  letter-spacing: 0.04em;
}
.sidebar-item:hover { color: var(--text); background: var(--surface-2); }
.sidebar-item.active { color: var(--primary); background: var(--surface-2); }
.sidebar-item .dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}
.app-main {
  flex: 1;
  overflow-y: auto;
  padding: 2rem 2.5rem;
  z-index: 2;
}
.app-panel-header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.app-panel-title {
  font-family: 'Inter', sans-serif;
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.03em;
}
.app-panel-sub {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ── Stat grid ── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1px;
  border: 1px solid var(--border);
  margin-bottom: 2rem;
  background: var(--border);
}
.stat-cell {
  background: var(--surface);
  padding: 1.25rem 1.5rem;
}
.stat-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  color: var(--faint);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.5rem;
}
.stat-value {
  font-family: 'Inter', sans-serif;
  font-weight: 800;
  font-size: 1.75rem;
  letter-spacing: -0.04em;
  color: var(--text);
  line-height: 1;
}
.stat-value.green  { color: var(--success); }
.stat-value.blue   { color: var(--primary); }
.stat-value.amber  { color: var(--warning); }
.stat-value.red    { color: var(--error); }

/* ── Data table ── */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  border: 1px solid var(--border);
}
.data-table th {
  text-align: left;
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--primary);
  color: var(--primary);
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.62rem;
  background: var(--surface);
}
.data-table td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}
.data-table tbody tr:hover td { background: var(--surface-2); cursor: pointer; }
.data-table tbody tr:last-child td { border-bottom: none; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); }

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-links, .nav-cta, .nav-cta.ghost { display: none; }
  .nav-hamburger { display: flex; }
  .app-sidebar { display: none; }
  .app-main { padding: 1.25rem; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
}