/* Sneaky Pixels (sneakypixels.com) — CRT terminal aesthetics, zero dependencies. */

:root {
  --bg: #090d12;
  --bg-panel: #0e141c;
  --bg-inset: #0a1017;
  --ink: #c8e6cf;
  --ink-dim: #6f8a78;
  --accent: #59f27d;
  --accent-dim: #2c8f4a;
  --magenta: #f259c9;
  --cyan: #59d7f2;
  --amber: #f2c359;
  --danger: #f25959;
  --border: #1d2a36;
  --mono: "Cascadia Code", "Fira Code", "JetBrains Mono", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.5;
}

/* faint CRT scanlines + vignette, purely decorative */
.crt {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  background:
    repeating-linear-gradient(0deg, rgba(0,0,0,0.16) 0 1px, transparent 1px 3px),
    radial-gradient(ellipse at center, transparent 55%, rgba(0,0,0,0.45) 100%);
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------------- header ---------------- */
.site-header {
  text-align: center;
  padding: 2.2rem 1rem 0.8rem;
}

.logo {
  display: inline-block;
  margin: 0;
  font-size: clamp(5px, 1.6vw, 11px);
  line-height: 1.15;
  color: var(--accent);
  text-shadow: 0 0 12px rgba(89, 242, 125, 0.45);
  user-select: none;
}

.tagline {
  color: var(--ink-dim);
  max-width: 46rem;
  margin: 0.8rem auto 0;
}
.tagline em { color: var(--cyan); font-style: normal; }

/* ---------------- layout ---------------- */
.layout {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(320px, 1fr);
  gap: 1.2rem;
  max-width: 74rem;
  margin: 1.5rem auto;
  padding: 0 1rem;
  align-items: start;
}

@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.1rem 1.2rem 1.4rem;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.4), 0 8px 30px rgba(0,0,0,0.35);
}

.panel-title {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin: 1.2rem 0 0.6rem;
  text-transform: lowercase;
}
.panel-title:first-child { margin-top: 0; }
.panel-title .hint { color: var(--ink-dim); font-weight: 400; letter-spacing: 0; }

/* ---------------- tabs ---------------- */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-bottom: 0.9rem;
}

.tab {
  font-family: inherit;
  font-size: 0.85rem;
  background: var(--bg-inset);
  color: var(--ink-dim);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.35rem 0.8rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.tab:hover { color: var(--ink); }
.tab.active {
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 700;
}

.tab-page.hidden { display: none; }

/* ---------------- form ---------------- */
label {
  display: block;
  margin: 0.55rem 0;
  color: var(--ink-dim);
  font-size: 0.82rem;
}

input[type="text"], input[type="url"], input[type="email"], input[type="tel"],
textarea, select {
  display: block;
  width: 100%;
  margin-top: 0.25rem;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.5rem 0.6rem;
  outline: none;
  caret-color: var(--accent);
}
input:focus, textarea:focus, select:focus {
  border-color: var(--accent-dim);
  box-shadow: 0 0 0 2px rgba(89, 242, 125, 0.15);
}
textarea { resize: vertical; }

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 0.8rem;
  align-items: end;
}

label.check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  color: var(--ink);
}
label.check input { accent-color: var(--accent); }

/* ---------------- sprite picker ---------------- */
.theme-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.8rem;
}

.theme-chip {
  font-family: inherit;
  font-size: 0.76rem;
  color: var(--ink);
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.theme-chip b { color: var(--amber); font-weight: 700; }
.theme-chip span { color: var(--ink-dim); }
.theme-chip:hover {
  border-color: var(--amber);
  box-shadow: 0 0 8px rgba(242, 195, 89, 0.25);
}
.theme-chip-any b { color: var(--magenta); }
.theme-chip-any:hover { border-color: var(--magenta); box-shadow: 0 0 8px rgba(242, 89, 201, 0.25); }
.theme-chip-clear b { color: var(--ink-dim); }
.theme-chip-clear:hover { border-color: var(--ink-dim); box-shadow: none; }

.sprite-group {
  border: 1px solid var(--border);
  border-radius: 6px;
  margin: 0 0 0.45rem;
  background: var(--bg-inset);
}
.sprite-group summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.45rem 0.7rem;
  font-size: 0.82rem;
  user-select: none;
}
.sprite-group summary::-webkit-details-marker { display: none; }
.sprite-group summary::before {
  content: '▸';
  color: var(--accent-dim);
  transition: transform 0.15s;
}
.sprite-group[open] summary::before { transform: rotate(90deg); }
.sprite-group .group-name { color: var(--cyan); font-weight: 600; letter-spacing: 0.05em; }
.sprite-group .group-blurb { color: var(--ink-dim); font-size: 0.72rem; flex: 1; }
.sprite-group .group-count {
  font-size: 0.68rem;
  color: var(--ink-dim);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 0.05rem 0.5rem;
  white-space: nowrap;
}
.sprite-group .group-count.active {
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 700;
}
.sprite-group .sprite-picker { padding: 0.15rem 0.6rem 0.6rem; }

.sprite-picker {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(104px, 1fr));
  gap: 0.5rem;
}

.sprite-card {
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.55rem 0.4rem 0.5rem;
  text-align: center;
  cursor: pointer;
  user-select: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.sprite-card:hover { border-color: var(--accent-dim); }
.sprite-card.selected {
  border-color: var(--accent);
  box-shadow: 0 0 10px rgba(89, 242, 125, 0.25), inset 0 0 14px rgba(89, 242, 125, 0.06);
}
.sprite-card canvas {
  image-rendering: pixelated;
  width: 58px;
  height: auto;
  background: #fff;
  border-radius: 2px;
}
.sprite-card .s-name {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.78rem;
  color: var(--ink);
}
.sprite-card .s-credit {
  display: block;
  font-size: 0.68rem;
  color: var(--ink-dim);
}
.sprite-card .s-size {
  display: block;
  font-size: 0.68rem;
  color: var(--accent-dim);
}

.microcopy {
  font-size: 0.75rem;
  color: var(--ink-dim);
  margin: 0.5rem 0 0;
}
.microcopy code {
  color: var(--cyan);
  background: rgba(89, 215, 242, 0.08);
  padding: 0 0.25em;
  border-radius: 3px;
}

/* ---------------- advanced ---------------- */
.advanced {
  margin-top: 1.1rem;
  border: 1px dashed var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.8rem;
}
.advanced summary {
  cursor: pointer;
  color: var(--amber);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}
.adv-grid { padding-top: 0.4rem; }
.advanced output { color: var(--accent); margin-left: 0.4rem; }
input[type="range"] { width: 100%; accent-color: var(--accent); }

/* ---------------- buttons ---------------- */
.generate-btn {
  display: block;
  width: 100%;
  margin-top: 1.2rem;
  padding: 0.8rem;
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--bg);
  background: var(--accent);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  box-shadow: 0 0 18px rgba(89, 242, 125, 0.3);
  transition: transform 0.05s, box-shadow 0.15s;
}
.generate-btn:hover { box-shadow: 0 0 26px rgba(89, 242, 125, 0.5); }
.generate-btn:active { transform: translateY(1px); }

.payload-preview {
  margin: 0.8rem 0 0;
  font-size: 0.72rem;
  color: var(--ink-dim);
  word-break: break-all;
  max-height: 4.4em;
  overflow: auto;
}
.payload-preview::before { content: "tx> "; color: var(--accent-dim); }

/* ---------------- output ---------------- */
.qr-stage {
  position: relative;
  display: flex;
  justify-content: center;
  padding: 0.6rem 0;
}

#qr-canvas {
  image-rendering: pixelated;
  width: min(100%, 440px);
  height: auto;
  border-radius: 4px;
  box-shadow: 0 0 0 1px var(--border), 0 10px 40px rgba(0,0,0,0.5);
  background: #fff;
}

.stage-empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-dim);
  background: var(--bg-inset);
  border: 1px dashed var(--border);
  border-radius: 4px;
  margin: 0.6rem 2rem;
}
.stage-empty.hidden { display: none; }

/* scan report */
.scan-report {
  margin-top: 0.6rem;
  font-size: 0.85rem;
  border-radius: 6px;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--border);
  background: var(--bg-inset);
  min-height: 2.4em;
}
.scan-report.ok { border-color: var(--accent-dim); }
.scan-report.err { border-color: var(--danger); color: var(--danger); }
.scan-report .verdict { font-weight: 700; letter-spacing: 0.06em; }
.scan-report.ok .verdict { color: var(--accent); }
.scan-report .native { color: var(--cyan); }
.scan-report .detail { color: var(--ink-dim); font-size: 0.78rem; display: block; margin-top: 0.25rem; }
.scan-report .detail.warn { color: var(--amber); }
.left-behind { color: var(--ink-dim); font-size: 0.75rem; }

/* downloads */
.dl-row { display: flex; gap: 0.6rem; margin-top: 0.8rem; }
.dl-btn {
  flex: 1;
  font-family: inherit;
  font-size: 0.9rem;
  padding: 0.55rem;
  color: var(--cyan);
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
}
.dl-btn:hover:not(:disabled) { border-color: var(--cyan); }
.dl-btn:disabled { opacity: 0.35; cursor: not-allowed; }

/* stats */
.stats { margin-top: 1rem; font-size: 0.8rem; }
.stats table { width: 100%; border-collapse: collapse; }
.stats td {
  padding: 0.22rem 0.4rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.stats td:first-child { color: var(--ink-dim); white-space: nowrap; width: 11em; }
.stats .val { color: var(--ink); }

.budget-bars { display: flex; flex-direction: column; gap: 3px; }
.budget-bar {
  position: relative;
  height: 12px;
  background: rgba(255,255,255,0.05);
  border-radius: 2px;
  overflow: hidden;
}
.budget-bar .fill {
  position: absolute;
  inset: 0 auto 0 0;
  background: linear-gradient(90deg, var(--accent-dim), var(--accent));
  border-radius: 2px;
}
.budget-bar .cap {
  position: absolute;
  top: 0; bottom: 0;
  width: 2px;
  background: var(--amber);
}
.budget-bar .lbl {
  position: absolute;
  right: 4px;
  top: -1px;
  font-size: 0.65rem;
  color: var(--ink-dim);
}

/* ---------------- sprite lab ---------------- */
.sprite-lab summary { color: var(--magenta); }
.lab-body { padding-top: 0.5rem; }
.lab-toolbar {
  display: flex;
  align-items: end;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 0.6rem;
}
.lab-toolbar label { margin: 0; }
.lab-toolbar input[type="number"] { width: 4em; }
.lab-tools { display: flex; gap: 0.3rem; }
.lab-tool {
  font-family: inherit;
  font-size: 0.78rem;
  color: var(--ink);
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.35rem 0.55rem;
  cursor: pointer;
}
.lab-tool.active { border-color: var(--accent); color: var(--accent); }
.lab-stage {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  flex-wrap: wrap;
}
#lab-grid {
  display: grid;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  width: max-content;
  cursor: crosshair;
  touch-action: none;
  user-select: none;
}
.lab-cell { width: 20px; height: 20px; }
.lab-preview { text-align: center; }
.lab-preview canvas {
  image-rendering: pixelated;
  width: 84px;
  height: auto;
  background: #fff;
  border-radius: 2px;
}
.lab-submit { margin-top: 0.8rem; font-size: 0.9rem; padding: 0.6rem; }
.lab-submit:disabled { opacity: 0.35; cursor: not-allowed; box-shadow: none; }

.inv-tag {
  font-size: 0.68rem;
  color: var(--magenta);
  border: 1px solid var(--magenta);
  border-radius: 3px;
  padding: 0 0.3em;
}

/* ---------------- footer ---------------- */
.site-footer {
  max-width: 60rem;
  margin: 2.5rem auto 2rem;
  padding: 0 1.2rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink-dim);
}
.site-footer a { color: var(--cyan); }
.site-footer .thanks { color: var(--ink); }
.site-footer .support { margin-top: 0.8rem; }
.site-footer .colophon {
  margin-top: 1.2rem;
  font-size: 0.72rem;
  border-top: 1px solid var(--border);
  padding-top: 0.9rem;
}