/* Tomografia fatia a fatia (Ensino Social). Página sem script nem estilo em linha: a política do site só aceita arquivo próprio. */
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: #0b0f14; color: #e8eef5;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; font-size: 14px; }
body { display: flex; flex-direction: column; }
.barra { display: flex; flex-wrap: wrap; gap: 6px 18px; padding: 8px 12px; background: #121922; border-bottom: 1px solid #243244; }
.grupo { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.rotulo { font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: #8fa3ba; margin-right: 2px; }
.bt { appearance: none; border: 1px solid #2c3d52; background: #182230; color: #dbe6f2; border-radius: 8px;
  padding: 6px 11px; font: inherit; cursor: pointer; transition: background .12s, border-color .12s; }
.bt:hover { background: #1f2d40; }
.bt[aria-pressed="true"] { background: #1e88e5; border-color: #1e88e5; color: #fff; font-weight: 600; }
.bt:focus-visible, #gl:focus-visible, input:focus-visible { outline: 2px solid #fdc400; outline-offset: 2px; }
.palco { position: relative; flex: 1 1 auto; min-height: 0; }
#gl { display: block; width: 100%; height: 100%; outline: none; cursor: crosshair; }
#aviso { position: absolute; left: 0; right: 0; top: 45%; margin: 0; text-align: center; color: #b8c7d9; pointer-events: none; }
#aviso[hidden] { display: none; }
#aviso.erro { color: #ffb4a8; font-weight: 600; }
.pe { padding: 8px 12px 10px; background: #121922; border-top: 1px solid #243244; }
.fatia { display: flex; align-items: center; gap: 8px; }
.fatia input[type=range] { flex: 1 1 auto; accent-color: #1e88e5; height: 26px; }
.passo { padding: 4px 10px; }
#qual { min-width: 118px; text-align: right; font-variant-numeric: tabular-nums; color: #dbe6f2; }
.leitura { display: flex; flex-wrap: wrap; gap: 4px 22px; margin-top: 6px; color: #9fb2c8; font-size: 13px; }
.leitura strong { color: #fff; font-variant-numeric: tabular-nums; }
.fonte { margin: 6px 0 0; font-size: 11.5px; line-height: 1.35; color: #7f93aa; }