:root {
  --bg: #0a0e16;
  --panel: #111826;
  --panel-alt: #161f30;
  --border: #232f45;
  --border-soft: #1b2536;
  --text: #e7ecf3;
  --muted: #7c8aa0;
  --muted-dim: #4e5a70;
  --teal: #2dd9c4;
  --amber: #f5a623;
  --rose: #f2637a;
  --violet: #8b7cf6;
}

* { box-sizing: border-box; }

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

input, select, button {
  font-family: inherit;
}

.app {
  max-width: 1040px;
  margin: 0 auto;
  padding: 32px 16px 16px;
}

/* ---------- topbar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-icon {
  width: 36px; height: 36px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  color: var(--teal);
  flex-shrink: 0;
}
.brand h1 { font-size: 17px; font-weight: 600; letter-spacing: -0.01em; margin: 0; }
.brand-sub { font-size: 11px; color: var(--muted-dim); margin: 2px 0 0; }

.topbar-actions { display: flex; align-items: center; gap: 8px; }
.save-indicator {
  font-size: 11px;
  color: var(--teal);
  margin-right: 4px;
}
.btn-ghost {
  display: flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 500;
  color: var(--muted);
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  cursor: pointer;
}
.btn-ghost:hover { color: var(--text); border-color: var(--teal); }

/* ---------- layout ---------- */
.layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 20px;
  align-items: start;
}
@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.section-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  color: var(--muted-dim);
  margin: 0 0 14px;
}

/* ---------- form fields ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 18px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; margin-bottom: 18px; }
@media (max-width: 560px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}
.col-2 { grid-column: span 2; }
@media (max-width: 560px) { .col-2 { grid-column: span 1; } }

.field { display: flex; flex-direction: column; gap: 6px; }
.field label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 500;
  color: var(--muted);
}
.hint { color: var(--muted-dim); text-transform: none; }

input[type="text"], input[type="number"], select {
  width: 100%;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 9px 11px;
  font-size: 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  outline: none;
}
input[type="text"] { font-family: inherit; }
input:focus, select:focus { border-color: var(--teal); }

.select-wrap { position: relative; }
.select-wrap select { appearance: none; cursor: pointer; padding-right: 28px; }
.select-arrow {
  position: absolute; right: 11px; top: 50%; transform: translateY(-50%);
  pointer-events: none; color: var(--muted);
  width: 10px; height: 7px;
}

/* ---------- subsections / editable lists ---------- */
.subsection { margin-bottom: 6px; }
.subsection-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 8px;
}
.btn-add {
  display: flex; align-items: center; gap: 4px;
  font-size: 11px; font-weight: 500;
  color: var(--teal);
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 8px;
  cursor: pointer;
}
.btn-add:hover { border-color: var(--teal); }

.empty-msg { font-size: 12px; color: var(--muted-dim); margin: 0 0 10px; }

.list-head {
  display: grid;
  gap: 8px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted-dim);
  padding: 0 2px;
  margin-bottom: 4px;
}
.list-head.cols-2 { grid-template-columns: 1fr 96px 18px; }
.list-head.cols-3 { grid-template-columns: 1fr 80px 80px 18px; }

.list-body { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
#custosExtraList { display: flex; flex-direction: column; gap: 6px; }

.row { display: grid; grid-template-columns: 1fr 96px 18px; gap: 8px; align-items: center; }
.row.cols-3 { grid-template-columns: 1fr 80px 80px 18px; }
.row-input { padding: 6px 8px; font-size: 12px; }
.row-remove {
  background: none; border: none; cursor: pointer;
  color: var(--muted-dim); font-size: 15px; line-height: 1;
  padding: 2px;
}
.row-remove:hover { color: var(--rose); }

/* ---------- settings collapsible ---------- */
.settings { margin-top: 16px; }
.settings summary {
  cursor: pointer;
  list-style: none;
  display: flex; align-items: center; gap: 7px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  color: var(--muted-dim);
}
.settings summary::-webkit-details-marker { display: none; }
.settings-body { margin-top: 16px; }

/* ---------- results panel ---------- */
.peca-nome { font-size: 12px; color: var(--muted); margin: 0 0 16px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.result-body { display: flex; gap: 16px; margin-bottom: 16px; }

.layer-bar-wrap { display: flex; flex-direction: column; align-items: center; flex-shrink: 0; }
.layer-bar {
  width: 32px; height: 148px;
  border-radius: 4px;
  overflow: hidden;
  display: flex; flex-direction: column-reverse;
  background: var(--panel-alt);
  border: 1px solid var(--border);
}
.layer { transition: height 300ms ease; opacity: 0.85; }
.layer-label {
  font-size: 9px; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--muted-dim); margin-top: 6px;
}

.leader-rows { flex: 1; min-width: 0; }
.leader-row { display: flex; align-items: baseline; gap: 8px; padding: 6px 0; }
.leader-label { font-size: 13px; color: var(--muted); white-space: nowrap; }
.leader-dots { flex: 1; border-bottom: 1px dotted var(--border-soft); transform: translateY(-3px); }
.leader-value { font-size: 13px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.accent-teal { color: var(--teal); }
.accent-amber { color: var(--amber); }
.accent-violet { color: var(--violet); }
.accent-rose { color: var(--rose); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.chip {
  font-size: 11px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  padding: 4px 8px; border-radius: 5px;
  background: var(--panel-alt); border: 1px solid var(--border);
}
.chip-teal { color: var(--teal); }
.chip-amber { color: var(--amber); }
.chip-violet { color: var(--violet); }

.divider { height: 1px; background: var(--border); margin-bottom: 12px; }

.total-row { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 16px; }
.total-row span:first-child { font-size: 13px; font-weight: 500; color: var(--muted); }
.total-value { font-size: 20px; font-weight: 600; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

.final-box {
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
}
.final-row { display: flex; align-items: baseline; justify-content: space-between; }
#finalLabel { font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted-dim); }
.final-value { font-size: 22px; font-weight: 700; color: var(--teal); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

.frete-row {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 10px; padding-top: 10px;
  border-top: 1px dashed var(--border);
  font-size: 12px; color: var(--muted);
}
.frete-row span:last-child { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-weight: 600; color: var(--text); }
.hidden { display: none !important; }

.footer {
  text-align: center;
  padding: 22px 0 8px;
  font-size: 11px;
  color: var(--muted-dim);
}