:root {
  --bg0: #0f1412;
  --bg1: #171e1a;
  --ink: #e8f0ea;
  --muted: #8fa396;
  --line: #2a3530;
  --accent: #3dcf8e;
  --accent-ink: #062416;
  --danger: #e86a5c;
  --ok: #7ddea8;
  --radius: 14px;
  --font: "IBM Plex Sans Thai", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg0);
  line-height: 1.45;
}
.bg {
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(900px 500px at 10% -10%, #1d3a2c 0%, transparent 55%),
    radial-gradient(700px 400px at 100% 0%, #243028 0%, transparent 50%),
    linear-gradient(180deg, #121816, #0d110f 60%);
}
.top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px; border-bottom: 1px solid var(--line);
}
.brand { font-weight: 700; letter-spacing: 0.02em; }
.brand span { color: var(--accent); font-weight: 600; }
nav { display: flex; gap: 14px; align-items: center; color: var(--muted); font-size: 0.95rem; }
nav a { color: var(--ink); }
main { max-width: 820px; margin: 0 auto; padding: 28px 18px 64px; }
.panel {
  background: color-mix(in srgb, var(--bg1) 88%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}
h1 { margin: 0 0 8px; font-size: 1.7rem; }
.lead { color: var(--muted); margin: 0 0 18px; }
.tabs { display: flex; gap: 8px; margin-bottom: 14px; }
.tab {
  background: transparent; border: 1px solid var(--line); color: var(--muted);
  border-radius: 999px; padding: 8px 14px; cursor: pointer;
}
.tab.active { border-color: var(--accent); color: var(--accent); }
.stack { display: grid; gap: 12px; }
label { display: grid; gap: 6px; font-size: 0.92rem; color: var(--muted); }
input {
  width: 100%; padding: 12px 12px; border-radius: 10px;
  border: 1px solid var(--line); background: #0c100e; color: var(--ink);
  font: inherit;
}
button {
  border: 0; border-radius: 10px; padding: 12px 16px; cursor: pointer;
  background: var(--accent); color: var(--accent-ink); font-weight: 700; font: inherit;
}
button.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); font-weight: 600; }
button.danger { background: transparent; color: var(--danger); border: 1px solid color-mix(in srgb, var(--danger) 45%, var(--line)); }
.row { display: flex; gap: 12px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.cards { display: grid; gap: 12px; margin-top: 16px; }
.card {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 16px;
  background: var(--bg1); cursor: pointer;
}
.card:hover { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); }
.card h3 { margin: 0 0 6px; }
.card p { margin: 0; color: var(--muted); font-size: 0.9rem; }
.meta { display: grid; gap: 10px; margin: 16px 0; }
.meta div { display: grid; gap: 2px; }
.meta dt { color: var(--muted); font-size: 0.8rem; }
.meta dd { margin: 0; }
.mono { font-family: var(--mono); font-size: 0.86rem; word-break: break-all; }
.banner {
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line));
  background: color-mix(in srgb, var(--accent) 12%, var(--bg1));
  border-radius: 12px; padding: 14px; display: grid; gap: 10px; margin-bottom: 16px;
}
.error { color: var(--danger); min-height: 1.2em; }
.ok { color: var(--ok); }
.muted { color: var(--muted); }
.hide { display: none !important; }
dialog {
  border: 1px solid var(--line); border-radius: 16px; padding: 20px;
  background: var(--bg1); color: var(--ink); width: min(420px, 92vw);
}
dialog::backdrop { background: rgb(0 0 0 / 55%); }
footer {
  text-align: center; color: var(--muted); padding: 24px; font-size: 0.9rem;
}
footer a { color: var(--accent); }
.actions { margin-top: 16px; }