/* SENTRA palette sampled from owner-supplied original PNG assets. */
:root{--sentra-navy:#10283F;--sentra-blue:#1687B3;--sentra-sky:#75CFF0;--sentra-paper:#F4F7FA;--sentra-surface:#FFFFFF;--sentra-ink:#10283F;--sentra-muted:#43596B;--sentra-line:#D7E2EB;--sentra-focus:#1687B3;--ink:var(--sentra-ink);--brand:var(--sentra-navy);--muted:var(--sentra-muted);--surface:var(--sentra-surface);--line:var(--sentra-line)}
body{background:var(--sentra-paper);color:var(--sentra-ink)}
.ops{--op-bg:var(--sentra-paper);--op-ink:var(--sentra-ink);--op-muted:var(--sentra-muted);--op-line:var(--sentra-line);--op-blue:var(--sentra-navy)}
.sentra-logo{display:block;width:clamp(150px,20vw,230px);height:auto;object-fit:contain}
.sentra-app-icon{width:40px;height:40px;object-fit:contain}
.ops-eyebrow{color:var(--sentra-blue)}
.ops :focus-visible,:focus-visible{outline:3px solid var(--sentra-focus);outline-offset:3px}
.ops-heading a,#op-save,#submit,#logout{background:var(--sentra-navy);border-color:var(--sentra-navy);color:#fff}
.ops-cards>button:hover{background:#EAF4F9;border-color:var(--sentra-blue)}
/* Blue is an accent, not a normal white-text button fill (contrast 4.08:1).
   Navy on white/white on navy is 15.03:1. Brand colors never encode legal status. */