:root {
  --bg: #101114;
  --panel: #0a192f;
  --panel-2: #242730;
  --text: #f4f4f4;
  --muted: #b8bcc7;

  --accent: #008899;
  --accent-dark: #229999;
  --accent-glow: rgba(0, 136, 153, 0.12);
  --accent-wash: rgba(0, 136, 153, 0.08);

  --border: #3a3d46;
  --danger: #ff7070;
  --good: #6ee7a8;
  --warn: #ffd166;
}
* { box-sizing: border-box; }
/* 
--panel: #1b1d22;
  --bg: #101114;
*/
body { margin: 0; font-family: Arial, Helvetica, sans-serif; background: radial-gradient(circle at top left, var(--accent-wash), transparent 30%), var(--bg); color: var(--text); }

.wrap { max-width: 1280px; margin: 0 auto; padding: 28px 18px; display: grid; grid-template-columns: minmax(0, 1fr) 430px; gap: 28px; align-items: start; }

.panel { background: /*rgba(27, 29, 34, 0.96)*/ rgba(10, 25, 37, 0.7);  border: 1px solid var(--border); border-radius: 16px; padding: 24px; box-shadow: 0 12px 30px rgba(0,0,0,0.25); }

h1, h2, h3 { margin-top: 0; line-height: 1.15; }
h1 { margin-bottom: 8px; font-size: clamp(28px, 4vw, 42px); }
h2 { font-size: 22px; margin-bottom: 16px; }
h3 { margin: 28px 0 4px; color: var(--accent); font-size: 18px; border-top: 1px solid var(--border); padding-top: 20px; }

p { color: var(--muted); line-height: 1.5; }
code { color: var(--accent); }

.version { display: inline-block; margin-bottom: 16px; padding: 5px 9px; border-radius: 999px; background: var(--panel-2); color: var(--accent); font-size: 13px; font-weight: bold; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-full { grid-column: 1 / -1; }

label { display: block; margin: 16px 0 7px; font-weight: bold; color: #fff; }
input, select, textarea, button { width: 100%; border-radius: 9px; border: 1px solid var(--border); font-size: 15px; }
input, select, textarea { background: #111318; color: var(--text); padding: 11px 12px; outline: none; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
textarea { min-height: 105px; resize: vertical; font-family: Arial, Helvetica, sans-serif; }

input[type="color"] { height: 44px; padding: 4px; cursor: pointer; }
input[type="range"] { padding: 0; accent-color: var(--accent); }
input[type="file"] { padding: 9px; }

.colour-group, .gradient-options, .score-card, .preset-manager { background: #14171d; border: 1px solid var(--border); border-radius: 12px; padding: 14px; }
.colour-row { display: grid; grid-template-columns: 66px 1fr; gap: 10px; align-items: end; }

.rgb-row { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; margin-top: 10px; }
.rgb-row label { margin-top: 0; font-size: 12px; color: var(--muted); }
.rgb-row input { padding: 9px; }
.range-row { display: flex; gap: 12px; align-items: center; }
.range-row input[type="range"] { flex: 1; }

.range-value { min-width: 76px; text-align: right; color: var(--accent);  font-weight: bold; font-variant-numeric: tabular-nums; }

.checkbox-row { display: flex; align-items: center; gap: 10px; margin-top: 16px; }
.checkbox-row input { width: auto; transform: scale(1.15); accent-color: var(--accent); }
.checkbox-row label { margin: 0; font-weight: normal; color: var(--text); }

button { padding: 12px 14px; cursor: pointer; font-weight: bold; background: var(--accent); color: #111; border: none; transition: transform 0.12s ease, background 0.12s ease; }
button:hover { background: var(--accent-dark); transform: translateY(-1px); }
button.secondary { background: #303440; color: var(--text); border: 1px solid var(--border); }
button.secondary:hover { background: #3b4050; }
button.danger { background: #442426; color: #ffd8d8; border: 1px solid rgba(255, 112, 112, 0.35); }
button.danger:hover { background: #563034; }

.preset-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 14px; }
.preset-row button { font-size: 13px; padding: 10px; }
.gradient-options { margin-top: 16px; }
.gradient-preview { width: 100%; height: 18px; border-radius: 999px; border: 1px solid var(--border); margin-top: 12px; background: linear-gradient(90deg, #000, #008899); }

.logo-preview-row { display: grid; grid-template-columns: 72px 1fr; gap: 12px; align-items: center; margin-top: 10px; }
.logo-thumb { width: 72px; height: 72px; border-radius: 10px; background: #fff; border: 1px solid var(--border); object-fit: contain; padding: 6px; display: none; }
.logo-thumb.visible { display: block; }
.logo-note { font-size: 13px; color: var(--muted); word-break: break-word; }

.downloads, .button-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }
.downloads { margin-top: 20px; }

.preview-wrap { position: sticky; top: 18px; align-self: start; max-height: calc(100vh - 36px); overflow: auto; }
#qrPreview { background: #fff; padding: 20px; border-radius: 14px; display: flex; justify-content: center; align-items: center; min-height: 400px; overflow: auto; }
#qrPreview canvas, #qrPreview svg { max-width: 100%; height: auto; }

.hint { margin-top: 12px; font-size: 13px; color: var(--muted); }
.sticky-note { margin-top: 10px; padding: 9px 10px; border-radius: 9px; background: #14171d; border: 1px solid var(--border); color: var(--muted); font-size: 13px; line-height: 1.4; }

.status { margin-top: 14px; padding: 10px 12px; border-radius: 9px; background: #14171d; color: var(--muted); font-size: 14px; min-height: 39px; }
.status.error { color: var(--danger); border: 1px solid rgba(255, 112, 112, 0.4); }

.score-card { margin-top: 14px; }
.score-title { display: flex; justify-content: space-between; gap: 12px; align-items: center; margin-bottom: 8px; }
.score-stars { font-size: 20px; letter-spacing: 1px; color: var(--accent); white-space: nowrap; }
.score-label { font-weight: bold; color: var(--good); }
.score-label.warn { color: var(--warn); }
.score-label.bad { color: var(--danger); }
.score-list { margin: 10px 0 0; padding-left: 18px; color: var(--muted); font-size: 13px; line-height: 1.5; }

.preset-manager textarea { min-height: 145px; font-family: Consolas, Monaco, monospace; font-size: 13px;}

.st-footer { margin-top: 48px; padding: 24px 0; border-top: 1px solid var(--border); text-align: center; }
.st-footer p { margin: 0; color: var(--muted); font-size: 14px;}
.st-footer a { color: var(--accent); text-decoration: none; margin-left: 8px; transition: color 0.2s ease;}
.st-footer a:hover { color: var(--accent-dark); }

@media (max-width: 940px) {
  .wrap { grid-template-columns: 1fr; }
  .preview-wrap { position: static; max-height: none; overflow: visible; }
}

@media (max-width: 700px) {
  .grid, .downloads, .button-row, .preset-row { grid-template-columns: 1fr; }
  .panel { padding: 18px; }
}