:root {
  --bg: #070b14;
  --bg2: #0a1120;
  --panel: #0c1424;
  --line: #16243d;
  --cyan: #00e5ff;
  --magenta: #ff2ea6;
  --text: #d6e4f5;
  --dim: #7d90ad;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  font-size: 15px;
  line-height: 1.55;
  min-height: 100vh;
}
.bg-grid {
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(900px 500px at 15% -5%, rgba(0,229,255,0.10), transparent 60%),
    radial-gradient(800px 500px at 90% 10%, rgba(255,46,166,0.08), transparent 60%),
    linear-gradient(var(--line) 1px, transparent 1px) 0 0 / 100% 56px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0 / 56px 100%;
  opacity: 0.35;
}
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

header { border-bottom: 1px solid var(--line); background: rgba(7,11,20,0.85); backdrop-filter: blur(6px); position: sticky; top: 0; z-index: 10; }
.nav { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 17px; letter-spacing: 0.5px; }
.brand b { color: var(--magenta); }
.brand svg { filter: drop-shadow(0 0 6px rgba(0,229,255,0.6)); }
nav a { color: var(--dim); text-decoration: none; margin-left: 22px; font-size: 13px; }
nav a:hover { color: var(--cyan); }

.hero { padding: 72px 0 44px; }
.hero h1 { font-size: clamp(30px, 6vw, 52px); line-height: 1.1; font-weight: 800; letter-spacing: -1px; }
.grad { background: linear-gradient(90deg, var(--cyan), var(--magenta)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.sub { margin-top: 16px; max-width: 640px; color: var(--dim); }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 22px; margin: 26px 0; box-shadow: 0 0 0 1px rgba(0,229,255,0.04), 0 12px 40px rgba(0,0,0,0.35); }
.panel-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
.panel h2 { font-size: 16px; color: var(--cyan); letter-spacing: 1px; text-transform: uppercase; }

.badge { padding: 3px 10px; border-radius: 999px; font-size: 12px; border: 1px solid var(--cyan); color: var(--cyan); }
.badge.ver { border-color: var(--magenta); color: var(--magenta); }
.hidden { display: none; }

.io { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.io-label { font-size: 12px; color: var(--dim); margin-bottom: 6px; display: flex; justify-content: space-between; align-items: center; }
textarea {
  width: 100%; height: 340px; resize: vertical;
  background: var(--bg2); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px;
  padding: 12px; font: inherit; font-size: 13px; line-height: 1.45;
  outline: none;
}
textarea:focus { border-color: var(--cyan); box-shadow: 0 0 0 1px rgba(0,229,255,0.25); }
.drop-note { font-size: 11px; color: var(--dim); margin-top: 6px; }
.io-col.drag { outline: 2px dashed var(--magenta); outline-offset: 4px; border-radius: 8px; }

.mini { background: none; border: 1px solid var(--line); color: var(--dim); border-radius: 6px; padding: 2px 8px; font: inherit; font-size: 11px; cursor: pointer; }
.mini:hover { color: var(--cyan); border-color: var(--cyan); }

.opts { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 14px; }
.opts label { font-size: 13px; color: var(--dim); cursor: pointer; display: flex; align-items: center; gap: 6px; }
.opts input { accent-color: var(--cyan); }
.spacer { flex: 1; }
button.primary, button.ghost {
  font: inherit; font-size: 14px; padding: 9px 22px; border-radius: 8px; cursor: pointer;
  border: 1px solid transparent; transition: all 0.15s;
}
button.primary { background: linear-gradient(90deg, var(--cyan), #00b3cc); color: #04121c; font-weight: 700; }
button.primary:hover { filter: brightness(1.15); box-shadow: 0 0 18px rgba(0,229,255,0.35); }
button.ghost { background: none; border-color: var(--line); color: var(--dim); }
button.ghost:hover:not(:disabled) { color: var(--text); border-color: var(--dim); }
button:disabled { opacity: 0.4; cursor: default; }

.stats { margin-top: 14px; font-size: 13px; color: var(--dim); border-top: 1px solid var(--line); padding-top: 10px; }
.stats b { color: var(--text); }
.luraph { margin-top: 12px; border: 1px solid var(--magenta); border-radius: 8px; padding: 12px 14px; font-size: 13px; }
.luraph .lt { color: var(--magenta); font-weight: 700; margin-bottom: 6px; }

.matrix .m-row { display: grid; grid-template-columns: 240px 1fr; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.matrix .m-row:last-child { border-bottom: none; }
.m-name { color: var(--cyan); }
.m-cap { color: var(--dim); }
.fine { margin-top: 12px; font-size: 12px; color: var(--dim); }

.how { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.how b { color: var(--magenta); }
.how p { font-size: 13px; color: var(--dim); margin-top: 6px; }

footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 18px 0 26px; color: var(--dim); font-size: 12px; }

@media (max-width: 760px) {
  .io { grid-template-columns: 1fr; }
  .matrix .m-row { grid-template-columns: 1fr; }
  nav a { margin-left: 12px; }
  .hero { padding: 44px 0 28px; }
}

/* sandbox + batch */
.sb-log {
  background: rgba(0, 229, 255, 0.03);
  border: 1px solid rgba(0, 229, 255, 0.15);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 12px;
  color: var(--dim, #7a8ba3);
  max-height: 220px;
  overflow-y: auto;
  margin: 12px 0;
  line-height: 1.6;
  word-break: break-all;
}
.cap {
  border: 1px solid rgba(255, 46, 166, 0.25);
  border-radius: 8px;
  padding: 10px 14px;
  margin: 10px 0;
}
.cap-head {
  font-size: 12px;
  color: #ff2ea6;
  margin-bottom: 6px;
}
.cap pre, .sb-log pre {
  white-space: pre-wrap;
  word-break: break-all;
  font-size: 11px;
  color: #cdd6e4;
  margin: 0;
  max-height: 260px;
  overflow-y: auto;
}
.batch { margin-top: 12px; }
.batch-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border: 1px solid rgba(0, 229, 255, 0.12);
  border-radius: 8px;
  margin: 6px 0;
  font-size: 12px;
  flex-wrap: wrap;
}
.b-name { color: #00e5ff; font-weight: 600; }
.b-det { color: #ff2ea6; }
.b-size, .b-err { color: #7a8ba3; }
.b-err { color: #ff5555; }
select {
  background: #0a0e16;
  color: #cdd6e4;
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: 6px;
  padding: 6px 8px;
  font: inherit;
}