/* Minimal header styles */
header{height:50px;background:rgba(5,18,29,0.96);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:50;gap:16px}
[dir="rtl"] header{flex-direction:row-reverse}
.header-left{display:flex;align-items:center;flex:1;gap:16px}
.brand{display:flex;align-items:center;gap:8px;color:var(--text);font-size:18px;font-weight:900}
.brand-icon{width:38px;height:38px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.brand-icon canvas{width:38px;height:38px;display:block}
.brand-text span{color:var(--cyan)}
.brand-sep{color:#3a5a70;margin:0 8px}
.home-link{font-size:13px;color:#7fa0ae;font-weight:500}
.lang-selector{display:flex;align-items:center;gap:6px;position:relative}
[dir="rtl"] .lang-selector{flex-direction:row-reverse}
.lang-btn{background:transparent;border:1px solid #2f6683;border-radius:6px;padding:6px 12px;color:#dcebf2;font-size:12px;cursor:pointer;display:flex;align-items:center;gap:6px;white-space:nowrap}
.lang-btn:hover{border-color:var(--cyan);color:var(--cyan)}
.lang-menu{display:none;position:absolute;top:100%;right:0;background:rgba(10,32,48,0.98);border:1px solid var(--line);border-radius:6px;min-width:140px;z-index:100;margin-top:4px}
[dir="rtl"] .lang-menu{right:auto;left:0}
.lang-menu.active{display:block}
.lang-menu a{display:block;padding:8px 14px;font-size:12px;color:#dcebf2;text-align:left}
[dir="rtl"] .lang-menu a{text-align:right}
.lang-menu a:hover{background:rgba(24,215,255,0.1);color:var(--cyan)}
.lang-menu a.active{background:#0d7fc5;color:white}

/* Survey Calculators: form and tab styles layered on knowledge.css tokens. */
.sc-format{display:flex;flex-wrap:wrap;gap:12px;margin:8px 0 16px}
.sc-tabs{display:flex;flex-wrap:wrap;gap:6px;border-bottom:1px solid var(--line);padding-bottom:8px;margin-bottom:8px}
.sc-tabs [role="tab"]{font:inherit;font-size:15px;padding:8px 14px;border-radius:8px;border:1px solid var(--line);background:var(--panel);color:var(--text);cursor:pointer}
.sc-tabs [role="tab"][aria-selected="true"]{background:var(--cyan);color:var(--on-accent);border-color:var(--cyan);font-weight:700}
.sc-tabs [role="tab"]:hover{border-color:var(--cyan)}
[role="tabpanel"]{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:6px 20px 20px;margin-bottom:24px}
[role="tabpanel"] h2{margin-top:16px}
.sc-help{color:var(--muted);margin-top:0}
.sc-form fieldset{border:1px solid var(--line);border-radius:8px;padding:8px 12px 12px;margin:0 0 12px}
.sc-form legend{font-weight:650;padding:0 6px}
.sc-row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:10px}
.sc-row>label,.sc-format>label{flex:1 1 180px}
.sc-form label,.sc-format label{display:flex;flex-direction:column;gap:4px;font-size:14px;color:var(--muted)}
.sc-form input,.sc-form select,.sc-form textarea,.sc-format select{font:inherit;font-size:16px;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:9px 10px;min-width:0}
.sc-form textarea{font-family:"Cascadia Code",Consolas,monospace;width:100%;resize:vertical}
.sc-form input:focus,.sc-form select:focus,.sc-form textarea:focus{border-color:var(--cyan)}
.sc-or{margin:4px 0;color:var(--muted)}
.sc-actions{margin:6px 0 12px}
.sc-actions .kc-cta{border:0;cursor:pointer;font:inherit;font-weight:700}
.sc-out{display:block}
.sc-result{display:grid;grid-template-columns:minmax(140px,max-content) 1fr;gap:6px 18px;margin:8px 0;background:var(--panel2);border:1px solid var(--line);border-radius:8px;padding:12px 14px;font-variant-numeric:tabular-nums}
.sc-result dt{color:var(--muted)}
.sc-result dd{margin:0;font-weight:600}
.sc-dim{color:var(--muted);font-weight:400}
.sc-warn,.sc-error p{color:var(--gold)}
.sc-error p{border-left:4px solid var(--gold);padding:8px 12px;background:var(--panel2);border-radius:6px}
@media (max-width:520px){[role="tabpanel"]{padding:4px 12px 16px}.sc-result{grid-template-columns:1fr}.sc-result dd{margin-bottom:6px}}
.ct-issues{margin:8px 0;padding-left:20px}
.ct-issues li{margin:4px 0}
.ct-error{color:var(--gold);font-weight:600}
.ct-warning{color:var(--gold)}
.ct-info{color:var(--muted)}
.sc-out code{word-break:break-all;font-size:13px}