/* K4JLS RADIO TOOLBOX — self-contained responsive calculators and reference library */
.tbx-hero{background:linear-gradient(125deg,#152f49 8%,#092137 75%);border:1px solid #3c6888;padding:23px;border-radius:17px;display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin:2px 0 19px}
.tbx-hero h3{font-size:1.27rem;margin:3px 0 8px;color:#ffe0a0}.tbx-hero p{margin:0;color:#c9ddef;font-size:.91rem;max-width:800px}
.tbx-shell{display:grid;grid-template-columns:290px minmax(0,1fr);gap:18px;align-items:start}.tbx-sidebar{position:sticky;top:12px;background:#0c2135;border:1px solid #365a74;border-radius:14px;padding:13px;max-height:78vh;overflow:auto}.tbx-search{width:100%;background:#071725!important;border:1px solid #45738a!important;color:#fff!important;border-radius:9px!important;padding:12px!important;font:inherit!important;box-sizing:border-box}.tbx-menu-title{color:#90b7cc;font-size:.68rem;letter-spacing:.15em;font-weight:800;margin:18px 7px 7px}.tbx-menu-btn{font:inherit;display:flex;width:100%;align-items:center;gap:9px;text-align:left;background:transparent;color:#d1e6f3;border:1px solid transparent;border-radius:9px;padding:10px 9px;cursor:pointer;font-size:.89rem}.tbx-menu-btn:hover{background:#153750}.tbx-menu-btn[aria-current="true"]{background:#1b4461;border-color:#d9ab57;color:#ffdaa0;font-weight:780}.tbx-menu-btn span:first-child{font-size:1.14rem;min-width:24px;text-align:center}.tbx-empty{font-size:.83rem;color:#d7cfa7;padding:8px}.tbx-main{min-width:0}.tbx-workspace{background:linear-gradient(150deg,#0b2539,#0c1b2d);border:1px solid #355872;padding:24px;border-radius:14px;min-height:550px}.tbx-tag{font-size:.7rem;color:#f5c777;letter-spacing:.12em;font-weight:850}.tbx-title{font-size:clamp(1.35rem,2vw,2rem);color:#f6fbff;margin:8px 0 9px}.tbx-desc{color:#c8dded;line-height:1.62;margin:0 0 19px}.tbx-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px;margin-bottom:16px}.tbx-field{display:flex;flex-direction:column;gap:6px;min-width:0}.tbx-field label{color:#d6e7f5;font-size:.85rem;font-weight:730}.tbx-field input,.tbx-field select{width:100%;background:#071929;color:#f6faff;border:1px solid #486d87;border-radius:9px;padding:13px 11px;font:inherit;min-height:45px}.tbx-field input:focus,.tbx-field select:focus,.tbx-search:focus{outline:2px solid #fbc76e;outline-offset:1px}.tbx-actions{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0 18px}.tbx-primary{border:0;background:#f1ac35;color:#081927;padding:12px 19px;font-weight:850;cursor:pointer;border-radius:9px;font:inherit}.tbx-secondary{border:1px solid #5c8299;background:#18364d;color:#eef6ff;padding:11px 16px;font-weight:740;cursor:pointer;border-radius:9px;font:inherit}.tbx-primary:hover{background:#ffd07b}.tbx-secondary:hover{background:#274c67}.tbx-output{padding:18px;background:#061a2b;border:1px solid #45758d;border-radius:12px;margin-top:14px;min-height:70px}.tbx-output h4{margin:0 0 10px;color:#ffda91}.tbx-outgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.tbx-value{background:#0e2f45;border:1px solid #315971;border-radius:10px;padding:11px;min-width:0}.tbx-value label{display:block;font-size:.7rem;color:#aed0e5;margin-bottom:5px}.tbx-value strong{font-size:clamp(1.1rem,2vw,1.43rem);color:#fff;overflow-wrap:anywhere}.tbx-value small{display:block;color:#b7cde0;font-size:.73rem;margin-top:4px}.tbx-explain{background:#122f43;border-left:3px solid #ecc375;padding:12px 14px;margin:15px 0 3px;border-radius:0 8px 8px 0;font-size:.87rem;color:#d5e6f2;line-height:1.58}.tbx-alert{border-left:3px solid #f3ae76;background:#362d2b;padding:10px 13px;color:#ffe5c9;font-size:.86rem;margin:12px 0;border-radius:5px}.tbx-note{font-size:.79rem;color:#a9c5d6;line-height:1.5;margin:13px 0 0}.tbx-formula{font:500 .86rem ui-monospace,SFMono-Regular,Consolas,monospace;padding:11px;background:#0e273b;border:1px solid #33566e;border-radius:7px;color:#d4e9f9;white-space:normal;overflow-wrap:anywhere;margin-top:12px}.tbx-table{border-collapse:collapse;width:100%;font-size:.84rem;table-layout:auto}.tbx-table th,.tbx-table td{text-align:left;border-bottom:1px solid #315166;padding:9px 12px;color:#d6e6f3;vertical-align:top}.tbx-table th{color:#f0ce88;letter-spacing:.02em}.tbx-table-wrap{overflow-x:auto;border:1px solid #315166;border-radius:10px}.tbx-refsearch{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:0 0 12px}.tbx-refsearch input{padding:12px;background:#071a2a;border:1px solid #467087;border-radius:9px;color:white;font:inherit;flex:1;min-width:150px}.tbx-results-count{font-size:.78rem;color:#b5d6e5}.tbx-ref-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.tbx-ref-card{background:#0c2a40;border:1px solid #34566c;border-radius:10px;padding:13px}.tbx-ref-card strong{color:#ffda91;display:block;margin-bottom:5px}.tbx-ref-card p{margin:0;color:#c5dded;font-size:.84rem;line-height:1.5}.tbx-link{display:inline-block;border:1px solid #637a88;border-radius:9px;padding:10px 12px;text-decoration:none!important;color:#ffe1aa!important;font-weight:750;margin:12px 8px 0 0}.tbx-link:hover{background:#1d4560}.tbx-mini-svg{background:#071c2b;border:1px solid #31576e;border-radius:12px;margin-top:15px;padding:9px;width:100%;min-height:150px}.tbx-mini-svg svg{display:block;width:100%;height:auto;max-height:185px}.tbx-inline{display:flex;align-items:center;gap:9px;flex-wrap:wrap}.tbx-inline input{max-width:150px}.tbx-quicklinks{display:flex;flex-wrap:wrap;gap:9px;margin:10px 0}.tbx-hint{color:#b5d0df;font-size:.76rem}.tbx-chip{display:inline-block;border:1px solid #557b92;border-radius:20px;color:#d2e9f7;padding:4px 10px;margin:2px;font-size:.82rem}.tbx-statline{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:10px}.tbx-advance{display:none}#tbxToolIntro{font-size:.84rem;color:#b2d0e4}
@media(max-width:960px){.tbx-shell{grid-template-columns:1fr}.tbx-sidebar{position:static;max-height:none;padding:12px}.tbx-menu{display:flex;flex-wrap:nowrap;overflow-x:auto;gap:7px;padding-bottom:8px}.tbx-menu-title{margin:9px 0 6px}.tbx-menu-btn{white-space:nowrap;width:auto;flex:none;background:#113349;border-color:#31566f}.tbx-main{width:100%}.tbx-workspace{padding:18px}}@media(max-width:540px){.tbx-workspace{padding:15px}.tbx-fields{grid-template-columns:1fr}.tbx-outgrid,.tbx-ref-cards{grid-template-columns:1fr}.tbx-hero{padding:15px}.tbx-table{font-size:.77rem}.tbx-table th,.tbx-table td{padding:7px}}