/* picblobs — synthwave operator console */

:root {
  --bg:        #0a0818;
  --bg-deep:   #050310;
  --surface:   #120d24;
  --surface-2: #1a1334;
  --border:    #2a1f52;
  --border-2:  #4a2f8f;
  --text:      #ece6ff;
  --muted:     #8a83bf;
  --dim:       #4d4574;

  /* synthwave neons */
  --magenta:   #ff3ee0;
  --magenta-2: #ff62c4;
  --cyan:      #52f0ff;
  --cyan-2:    #7df0ff;
  --violet:    #9b6bff;
  --amber:     #ffb454;

  /* semantic */
  --accent:    var(--magenta);
  --accent-2:  var(--cyan);
  --accent-3:  var(--amber);
  --success:   #50fa9b;
  --danger:    #ff5577;

  --code-bg:   #07041a;
  --code-fg:   #b8e7ff;

  --glow-magenta: 0 0 12px rgba(255, 62, 224, 0.45);
  --glow-cyan:    0 0 12px rgba(82, 240, 255, 0.45);

  --mono: ui-monospace, "JetBrains Mono", "SF Mono", "Cascadia Mono",
          "DejaVu Sans Mono", "Menlo", "Consolas", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
          "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background:
    radial-gradient(1100px 500px at 90% -10%, rgba(255, 62, 224, 0.07), transparent 60%),
    radial-gradient(900px 400px at -10% 110%, rgba(82, 240, 255, 0.06), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dotted color-mix(in srgb, var(--cyan) 40%, transparent);
  transition: color 120ms, border-color 120ms, text-shadow 120ms;
}
a:hover {
  color: var(--magenta);
  border-bottom-color: var(--magenta);
  text-shadow: var(--glow-magenta);
}

/* ---------- top bar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.65rem 1.5rem;
  background: linear-gradient(180deg, rgba(18, 13, 36, 0.95) 0%, rgba(10, 8, 24, 0.92) 100%);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(255, 62, 224, 0.12), 0 6px 24px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(6px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--text);
  border-bottom: none;
}
.brand:hover { color: var(--magenta); text-shadow: var(--glow-magenta); }
.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  image-rendering: pixelated;
  box-shadow: 0 0 0 1px var(--border-2), 0 0 10px rgba(155, 107, 255, 0.35);
  object-fit: cover;
}
.brand-name {
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: 0.18em;
  font-size: 0.95rem;
  text-shadow: 0 0 8px rgba(255, 62, 224, 0.35);
}
.brand-tag {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--cyan);
  letter-spacing: 0.18em;
  opacity: 0.7;
}
.top-nav {
  display: flex;
  gap: 1.1rem;
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.85rem;
}
.top-nav a {
  color: var(--muted);
  border-bottom: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.top-nav a[aria-current="page"] {
  color: var(--magenta);
  text-shadow: var(--glow-magenta);
}
.top-nav a:hover {
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}

/* ---------- shell layout ---------- */

.layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  flex: 1;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
}

.sidebar {
  padding: 1.5rem 1rem 3rem 1.5rem;
  border-right: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.85rem;
}
.sidebar-section {
  margin: 1.25rem 0 0.45rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px dashed var(--border);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
  opacity: 0.7;
}
.sidebar ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.sidebar li { margin: 0; }
.sidebar a {
  display: block;
  padding: 0.28rem 0.5rem;
  color: var(--muted);
  border-bottom: none;
  border-left: 2px solid transparent;
  border-radius: 0 4px 4px 0;
  text-shadow: none;
  transition: color 120ms, background 120ms, border-color 120ms;
}
.sidebar a:hover {
  color: var(--cyan);
  background: var(--surface);
  text-shadow: none;
}
.sidebar a[aria-current="page"] {
  color: var(--magenta);
  background: linear-gradient(90deg, rgba(255, 62, 224, 0.12), transparent 80%);
  border-left-color: var(--magenta);
  text-shadow: var(--glow-magenta);
}

.content {
  padding: 2rem 2.5rem 4rem;
  max-width: 900px;
  min-width: 0;
}

/* ---------- typography ---------- */

h1, h2, h3, h4 {
  font-family: var(--sans);
  color: var(--text);
  line-height: 1.25;
  margin-top: 2rem;
  margin-bottom: 0.6rem;
}
h1 {
  margin-top: 0.5rem;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.6rem;
}
h1::before {
  content: "// ";
  font-family: var(--mono);
  color: var(--magenta);
  font-weight: 400;
  text-shadow: var(--glow-magenta);
}
h2 {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--magenta);
  margin-top: 2.4rem;
  text-shadow: 0 0 10px rgba(255, 62, 224, 0.25);
}
h2::before {
  content: "§ ";
  color: var(--dim);
  font-weight: 400;
  text-shadow: none;
}
h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--cyan);
  margin-top: 1.6rem;
  text-shadow: 0 0 10px rgba(82, 240, 255, 0.25);
}
h4 {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--violet);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
p { margin: 0.75rem 0; }

ul, ol {
  margin: 0.6rem 0 0.9rem;
  padding-left: 1.4rem;
}
li { margin: 0.2rem 0; }
ul li::marker { color: var(--magenta); }
ol li::marker { color: var(--cyan); font-family: var(--mono); }

blockquote {
  margin: 1rem 0;
  padding: 0.6rem 1rem;
  border-left: 3px solid var(--magenta);
  background: linear-gradient(90deg, rgba(255, 62, 224, 0.05), transparent 80%);
  color: var(--text);
  font-style: italic;
  box-shadow: -1px 0 0 rgba(255, 62, 224, 0.45);
}

/* ---------- tables ---------- */

table {
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.9rem;
  width: 100%;
}
th, td {
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--border);
  text-align: left;
}
th {
  background: var(--surface);
  color: var(--cyan);
  font-family: var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}
tbody tr:nth-child(odd) { background: rgba(18, 13, 36, 0.35); }

/* ---------- code ---------- */

code, kbd, samp, pre {
  font-family: var(--mono);
  font-size: 0.88rem;
}
:not(pre) > code {
  background: rgba(82, 240, 255, 0.07);
  color: var(--cyan-2);
  border: 1px solid rgba(82, 240, 255, 0.2);
  padding: 0.05rem 0.35rem;
  border-radius: 3px;
  font-size: 0.85em;
}
pre {
  margin: 1rem 0;
  padding: 0.9rem 1rem;
  background: var(--code-bg);
  color: var(--code-fg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--magenta);
  border-radius: 5px;
  overflow-x: auto;
  line-height: 1.5;
  box-shadow: inset 0 0 30px rgba(155, 107, 255, 0.06), 0 0 0 1px rgba(255, 62, 224, 0.08);
}
pre code {
  background: transparent;
  border: 0;
  padding: 0;
  color: inherit;
  font-size: inherit;
}
pre[data-lang]::before {
  content: attr(data-lang);
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  opacity: 0.75;
  margin-bottom: 0.5rem;
  border-bottom: 1px dashed var(--border);
  padding-bottom: 0.35rem;
}

/* ---------- hero (landing page) ---------- */

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem;
  align-items: center;
  padding: 3rem 2.5rem 2.5rem;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(900px 240px at 85% 0%, rgba(255, 62, 224, 0.18), transparent 65%),
    radial-gradient(700px 220px at 5% 100%, rgba(82, 240, 255, 0.16), transparent 65%),
    radial-gradient(500px 200px at 50% 110%, rgba(155, 107, 255, 0.18), transparent 65%),
    linear-gradient(180deg, rgba(18, 13, 36, 0.4), rgba(10, 8, 24, 0));
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--magenta), var(--cyan), transparent);
  opacity: 0.5;
}
.hero-text h1 {
  margin: 0 0 0.5rem;
  font-size: 2.75rem;
  letter-spacing: -0.015em;
  border-bottom: none;
  padding-bottom: 0;
  background: linear-gradient(90deg, var(--magenta), var(--violet) 55%, var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-text h1::before { content: ""; }
.hero-tag {
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
  margin: 0 0 1rem;
}
.hero-lede {
  font-size: 1.05rem;
  color: var(--text);
  max-width: 60ch;
  margin: 0 0 1.5rem;
}
.hero-img {
  width: 220px;
  height: 220px;
  border-radius: 12px;
  border: 1px solid var(--border-2);
  box-shadow:
    0 0 0 1px var(--bg),
    0 0 0 2px rgba(255, 62, 224, 0.3),
    0 0 50px rgba(255, 62, 224, 0.25),
    0 0 90px rgba(82, 240, 255, 0.15);
  image-rendering: auto;
  object-fit: cover;
}
.cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.55rem 1rem;
  border: 1px solid var(--magenta);
  color: var(--magenta);
  border-bottom-width: 1px;
  border-radius: 4px;
  margin-right: 0.6rem;
  background: rgba(255, 62, 224, 0.06);
  box-shadow: 0 0 12px rgba(255, 62, 224, 0.2), inset 0 0 12px rgba(255, 62, 224, 0.05);
  text-shadow: var(--glow-magenta);
  transition: all 140ms;
}
.cta:hover {
  background: var(--magenta);
  color: var(--bg-deep);
  border-color: var(--magenta);
  text-shadow: none;
  box-shadow: 0 0 24px rgba(255, 62, 224, 0.55);
}
.cta.ghost {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(82, 240, 255, 0.05);
  box-shadow: 0 0 12px rgba(82, 240, 255, 0.18), inset 0 0 12px rgba(82, 240, 255, 0.04);
  text-shadow: var(--glow-cyan);
}
.cta.ghost:hover {
  background: var(--cyan);
  color: var(--bg-deep);
  text-shadow: none;
  box-shadow: 0 0 24px rgba(82, 240, 255, 0.5);
}

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}
.tile {
  display: block;
  padding: 1rem 1.1rem;
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  transition: all 160ms;
  position: relative;
}
.tile::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 6px;
  padding: 1px;
  background: linear-gradient(135deg, transparent 45%, rgba(255, 62, 224, 0.4), rgba(82, 240, 255, 0.4) 75%, transparent);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0;
  transition: opacity 160ms;
  pointer-events: none;
}
.tile:hover {
  border-color: var(--border-2);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(155, 107, 255, 0.18), 0 0 0 1px rgba(82, 240, 255, 0.1);
}
.tile:hover::before { opacity: 1; }
.tile-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 0.3rem;
  text-shadow: 0 0 8px rgba(82, 240, 255, 0.4);
}
.tile-title {
  display: block;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 0.2rem;
}
.tile:hover .tile-title { color: var(--magenta); }
.tile-desc {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.5;
}

/* ---------- diagrams ---------- */

figure { margin: 1.5rem 0; }

.diagram {
  margin: 1.75rem auto;
  padding: 1.25rem 1rem 1rem;
  background:
    radial-gradient(800px 200px at 50% 0%, rgba(255, 62, 224, 0.05), transparent 70%),
    linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
  border: 1px solid var(--border);
  border-radius: 6px;
  text-align: center;
  box-shadow:
    0 0 0 1px rgba(82, 240, 255, 0.05),
    0 10px 30px rgba(155, 107, 255, 0.10);
}
.diagram svg {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
}
.diagram figcaption {
  margin: 0.9rem 0.5rem 0;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.05em;
  line-height: 1.55;
}
.diagram figcaption code {
  font-size: 0.95em;
}

/* ---------- bottom page nav ---------- */

.page-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.85rem;
}
.page-nav a {
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--muted);
  background: var(--surface);
}
.page-nav a:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(82, 240, 255, 0.06);
  text-shadow: var(--glow-cyan);
  box-shadow: 0 0 14px rgba(82, 240, 255, 0.18);
}
.page-nav .spacer { flex: 1; }

/* ---------- footer ---------- */

.sitefoot {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--dim);
  letter-spacing: 0.08em;
  text-align: center;
  background: linear-gradient(0deg, rgba(10, 8, 24, 0.6), transparent);
}
.sitefoot a {
  color: var(--muted);
  border-bottom: none;
}
.sitefoot a:hover { color: var(--magenta); text-shadow: var(--glow-magenta); }

/* ---------- responsive ---------- */

@media (max-width: 860px) {
  .layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.25rem;
  }
  .content {
    padding: 1.5rem 1.25rem 3rem;
  }
  .hero {
    grid-template-columns: 1fr;
    padding: 2rem 1.25rem;
  }
  .hero-img { width: 140px; height: 140px; justify-self: start; }
  .hero-text h1 { font-size: 2rem; }
}