:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1e222b;
  --line: #2a2f3a;
  --text: #e6e8ec;
  --muted: #9aa1ac;
  --accent: #ff7a3d;
  --accent-2: #ffa062;
  --ok: #46c46a;
  --warn: #e8b13a;
  --bad: #e5533d;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  text-align: center;
  padding: 28px 16px 12px;
}
header h1 {
  margin: 0;
  font-size: 30px;
  letter-spacing: 0.5px;
}
header h1 span { color: var(--accent); }
header .sub { margin: 6px 0 0; color: var(--muted); font-size: 13px; }

main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}
.stats > div {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  text-align: center;
}
.stats .k { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); }
.stats strong { display: block; font-size: 22px; margin-top: 4px; color: var(--accent-2); }

.layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 18px;
  align-items: start;
}
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}

.dropzone {
  border: 2px dashed var(--line);
  border-radius: 14px;
  padding: 28px 16px;
  text-align: center;
  color: var(--muted);
  background: var(--panel);
  transition: border-color .15s, background .15s;
}
.dropzone.drag { border-color: var(--accent); background: #1b1e26; color: var(--text); }
.dropzone p { margin: 4px 0; }
.dropzone .hint { font-size: 12px; }
.link {
  background: none; border: none; color: var(--accent); cursor: pointer;
  font: inherit; text-decoration: underline; padding: 0;
}

.art-list { margin-top: 16px; display: flex; flex-direction: column; gap: 12px; }

.art-card {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
}
.thumb {
  width: 96px; height: 96px;
  border-radius: 8px;
  background:
    repeating-conic-gradient(#2b2f3a 0% 25%, #232732 0% 50%) 50% / 16px 16px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.thumb img { max-width: 100%; max-height: 100%; object-fit: contain; }

.art-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.art-name { word-break: break-all; }
.remove {
  background: none; border: 1px solid var(--line); color: var(--muted);
  width: 26px; height: 26px; border-radius: 6px; cursor: pointer; font-size: 16px; line-height: 1;
}
.remove:hover { color: var(--bad); border-color: var(--bad); }
.muted, .art-px { color: var(--muted); font-size: 12px; }

.size-row {
  display: flex; align-items: flex-end; gap: 10px; margin-top: 8px; flex-wrap: wrap;
}
.size-row label { display: flex; flex-direction: column; font-size: 11px; color: var(--muted); gap: 3px; }
.size-row input {
  width: 88px; background: var(--panel-2); border: 1px solid var(--line); color: var(--text);
  border-radius: 6px; padding: 6px 8px; font: inherit;
}
.qty { width: 88px; }
.lock {
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 6px;
  height: 32px; cursor: pointer; font-size: 13px;
}
.lock.on { border-color: var(--accent); }

.dpi-badge {
  font-size: 12px; padding: 4px 8px; border-radius: 6px; align-self: flex-end;
  border: 1px solid var(--line);
}
.dpi-badge.alta { color: var(--ok); border-color: var(--ok); }
.dpi-badge.media { color: var(--warn); border-color: var(--warn); }
.dpi-badge.baixa { color: var(--bad); border-color: var(--bad); }

.bg-row { margin-top: 10px; }
.check { display: flex; align-items: center; gap: 8px; }
.check.small, .check span { font-size: 12px; color: var(--muted); }
.bg-controls { display: flex; align-items: center; gap: 12px; margin-top: 8px; flex-wrap: wrap; }
.swatches { display: flex; gap: 6px; }
.sw {
  width: 22px; height: 22px; border-radius: 5px; border: 2px solid var(--line); cursor: pointer;
}
.sw.on { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(255,122,61,.3); }
.tol { display: flex; flex-direction: column; font-size: 11px; color: var(--muted); gap: 3px; }
.tol input { width: 70px; background: var(--panel-2); border: 1px solid var(--line); color: var(--text); border-radius: 6px; padding: 5px 7px; }

.col-side {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  position: sticky;
  top: 16px;
}
.col-side h2 { margin: 0 0 12px; font-size: 13px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); }
.field { display: flex; flex-direction: column; gap: 4px; margin-bottom: 12px; font-size: 12px; color: var(--muted); }
.field input,
.field select {
  background: var(--panel-2); border: 1px solid var(--line); color: var(--text);
  border-radius: 8px; padding: 8px 10px; font: inherit;
}
.col-side .check { margin: 6px 0 14px; }
.col-side .check span { color: var(--text); }

.primary {
  width: 100%;
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
  border: none; color: #1a1207; font-weight: 700;
  padding: 12px; border-radius: 10px; cursor: pointer; font-size: 15px;
}
.primary:disabled { opacity: .45; cursor: not-allowed; }
.gen-msg { font-size: 12px; color: var(--muted); margin: 8px 0 0; min-height: 16px; }
.gen-msg.err { color: var(--bad); }

.results { margin-top: 26px; }
.results h2 { font-size: 14px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); }

.sheet {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 16px; margin-bottom: 18px;
}
.sheet-head { display: flex; flex-wrap: wrap; gap: 18px; align-items: baseline; margin-bottom: 12px; }
.sheet-head .big { font-size: 20px; color: var(--accent-2); font-weight: 700; }
.sheet-head .metric { font-size: 12px; color: var(--muted); }
.sheet-head .metric b { color: var(--text); font-size: 14px; }

.eff-bar { height: 8px; background: var(--panel-2); border-radius: 5px; overflow: hidden; margin: 8px 0 14px; }
.eff-bar > i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }

.sheet-preview {
  background:
    repeating-conic-gradient(#2b2f3a 0% 25%, #232732 0% 50%) 50% / 20px 20px;
  border: 1px solid var(--line); border-radius: 10px;
  max-height: 520px; overflow: auto; text-align: center;
}
.sheet-preview img { max-width: 100%; display: block; margin: 0 auto; }

.downloads { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.downloads a {
  text-decoration: none; font-size: 13px; font-weight: 600;
  padding: 9px 14px; border-radius: 8px; border: 1px solid var(--line); color: var(--text);
  background: var(--panel-2);
}
.downloads a.png { border-color: var(--accent); color: var(--accent-2); }

.unplaced {
  background: #2a1c17; border: 1px solid var(--bad); color: #f0b9ad;
  border-radius: 10px; padding: 12px 14px; margin-bottom: 16px; font-size: 13px;
}
.unplaced ul { margin: 6px 0 0; padding-left: 18px; }

.result-total {
  display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: baseline;
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 14px 16px; font-size: 13px; color: var(--muted);
}
.result-total .cost { color: var(--text); font-size: 15px; }
.result-total .cost b { color: var(--accent-2); }
.result-total .cost em { color: var(--muted); font-size: 12px; font-style: normal; }