:root {
  --bg: #050507;
  --border: #30303a;
  --text: #dddddd;
  --muted: #aaaaaa;
  --title: #ffffff;
  --button-bg: #e63946;
  --button-hover: #ff5c6a;
  --input-bg: #050509;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 10% 10%, rgba(230,57,70,.20), transparent 60%),
              radial-gradient(900px 500px at 90% 10%, rgba(230,57,70,.16), transparent 55%),
              var(--bg);
  color: var(--text);
}

.wrap { width: min(1100px, 92vw); margin: 0 auto; }

.top { padding: 16px 0; }
.top h1 { margin: 0; color: var(--title); font-size: 22px; font-weight: 800; }

.main-nav { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 8px; }
.main-nav a {
  font-size: 13px;
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: #111;
  color: var(--muted);
}
.main-nav a:hover { background: #171717; color: #fff; }
.main-nav a.active { background: var(--button-bg); border-color: var(--button-hover); color: #fff; }

.card {
  background: rgba(17,17,25,.82);
  border-radius: 14px;
  border: 1px solid var(--border);
  padding: 14px 16px;
  margin-top: 14px;
  box-shadow: 0 0 14px rgba(0,0,0,.6);
}
.card h2 { margin: 0 0 6px 0; color: var(--title); font-size: 16px; font-weight: 800; }
.para { margin: 6px 0; color: rgba(255,255,255,.88); line-height: 1.55; }
.tiny-note { font-size: 12px; color: var(--muted); }

.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 10px 14px;
  margin-top: 12px;
  align-items: end;
}

.card label {
  font-size: 12px;
  color: var(--muted);
  font-weight: 700;
  display: block;
}

.card input,
.card select {
  background: var(--input-bg);
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 6px 8px;
  color: var(--text);
  font-size: 13px;
  margin-top: 6px;
  width: 100%;
}

.card button {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  background: var(--button-bg);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.15s;
}
.card button:hover { background: var(--button-hover); }

table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { border: 1px solid var(--border); padding: 6px 8px; text-align: center; }
th { background: rgba(0,0,0,.25); color: #fff; }
tbody tr:nth-child(even) td { background: rgba(255,255,255,.02); }

.result {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.18);
  line-height: 1.6;
}
.result.warn { border-color: rgba(255,213,74,.35); background: rgba(255,213,74,.06); }

.torque-card .torque-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 10px 14px;
  margin-top: 12px;
  align-items: end;
}

.angle-diagram{
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.16);
}
.angle-diagram-title{
  font-weight: 900;
  color: var(--title);
  margin-bottom: 8px;
  font-size: 13px;
}
.angle-diagram-img{
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
}
.angle-diagram-note{
  margin-top: 8px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.45;
}

/* Destaques da tabela (seleção do usuário) */
#forceTable tr.sel-row td{
  background: rgba(255,255,255,.04);
}
#forceTable th.sel-col,
#forceTable td.sel-col{
  background: rgba(226,59,59,.07);
}
#forceTable td.sel-cell{
  background: rgba(226,59,59,.18) !important;
  outline: 2px solid rgba(226,59,59,.75);
  box-shadow: inset 0 0 0 9999px rgba(226,59,59,.10);
}
#forceTable tr.sel-row td{
  outline: 1px solid rgba(255,255,255,.08);
}
#forceTable tr.sel-row td.sel-cell{
  outline: 2px solid rgba(226,59,59,.95);
}

/* Gráfico maior */
.chart-box{
  margin-top: 16px;
  height: 520px;
  background: rgba(0,0,0,.12);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 14px;
  padding: 10px;
}
@media (max-width: 900px){
  .chart-box{ height: 360px; }
}