.fencalc-info-button{background-color:#0073aa;color:#fff;border:none;border-radius:4px;padding:10px 15px;text-align:center;text-decoration:none;display:inline-block;font-size:14px;transition:background-color .3s ease;cursor:pointer}.fencalc-info-button:hover{background-color:#005177}.fencalc-system-row{display:flex;align-items:center;gap:8px;margin:0 0 1rem}.fencalc-system-label{flex:1;display:block}.fencalc-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:rgba(0,0,0,.7);z-index:10001}.fencalc-modal{position:fixed;top:0;left:0;right:0;bottom:0;z-index:10002;overflow-y:auto;display:none;align-items:center;justify-content:center;padding:20px}.fencalc-modal-inner{width:95%;max-width:1000px;margin:0 auto;background-color:#fff;border-radius:8px;box-shadow:0 8px 30px rgba(0,0,0,.4);position:relative;max-height:90vh;display:flex;flex-direction:column}.fencalc-modal-header{background-color:#0054a5;color:#fff;padding:16px 24px;font-size:20px;font-weight:600;border-radius:8px 8px 0 0}.fencalc-modal-content{padding:24px;overflow-y:auto;flex:1}.fencalc-tabs-head{display:flex;flex-wrap:wrap;border-bottom:1px solid #ddd;margin-bottom:24px;list-style:none;padding:0}.fencalc-tabs-head a{display:block;padding:10px 18px;margin-right:3px;margin-bottom:-1px;text-decoration:none;color:#585e6a;background-color:#f9f9f9;border:1px solid transparent;border-top-left-radius:4px;border-top-right-radius:4px;font-size:15px}.fencalc-tabs-head a.current{color:#204ce5;background-color:#fff;border-color:#ddd #ddd #fff;font-weight:500}.fencalc-tabs-head a:hover:not(.current){background-color:#f1f1f1;border-color:#f1f1f1 #f1f1f1 #ddd}.fencalc-tab-section{display:none}.fencalc-tab-section.active{display:block}.fencalc-modal-close{position:absolute;top:15px;right:15px;background:0 0;border:0;cursor:pointer;font-size:20px;line-height:1;color:#fff;z-index:10}.fencalc-modal-footer{display:flex;justify-content:flex-end;padding:16px 24px;background-color:#f8f8f8;border-top:1px solid #e5e5e5;border-radius:0 0 8px 8px;gap:12px}.fencalc-wrapper{--fc-accent:#0073aa;--fc-gap:12px;--fc-radius:6px;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial;color:#222;box-sizing:border-box;margin:0 auto}.fencalc-grid{display:block;grid-template-columns:1fr 320px;gap:20px;align-items:start}@media (max-width:768px){.fencalc-grid{grid-template-columns:1fr}}.fencalc-card{background:#fff;border:1px solid #e6e6e6;border-radius:var(--fc-radius);padding:14px;box-shadow:0 1px 2px rgba(0,0,0,.03)}.fencalc-row{display:flex;flex-direction:column;gap:6px;margin-bottom:var(--fc-gap)}.fencalc-row.inline{flex-direction:row;gap:10px;align-items:center}.fencalc-row label{font-size:13px;color:#444;display:block}.fencalc-row select,.fencalc-row input[type=text],.fencalc-row input[type=number]{width:100%;padding:8px 10px;border:1px solid #d0d0d0;border-radius:4px;background:#fff;font-size:14px;box-sizing:border-box;transition:box-shadow .12s,border-color .12s}.fencalc-row select:disabled,.fencalc-row input:disabled{opacity:.7}.fencalc-row select:focus,.fencalc-row input:focus{outline:none;border-color:var(--fc-accent);box-shadow:0 0 0 3px rgba(0,115,170,.06)}.fencalc-actions{display:flex;gap:8px;justify-content:flex-start;margin-top:8px}.fencalc-button{background:var(--fc-accent);color:#fff;padding:8px 12px;border-radius:6px;border:0;cursor:pointer;font-weight:600;font-size:14px}.fencalc-button.secondary{background:#f5f5f5;color:#222;border:1px solid #ddd}.fencalc-color-row{display:flex;gap:8px;align-items:center}.fencalc-color-preview{width:48px;height:32px;border-radius:4px;border:1px solid #ddd;background-size:cover;background-position:center;display:inline-block}.fencalc-color-select-wrap{display:flex;align-items:center;gap:8px;width:100%}.fencalc-note{font-size:12px;color:#666}.fencalc-summary{position:sticky;top:18px}.fencalc-summary h4{margin:0 0 8px;font-size:15px}.fencalc-summary .preview-large{width:100%;height:200px;background:linear-gradient(180deg,#fafafa,#fff);border:1px solid #e6e6e6;border-radius:6px;display:flex;align-items:center;justify-content:center;overflow:hidden}.fencalc-summary .preview-large img{max-width:100%;max-height:100%;object-fit:contain}@media (max-width:480px){.fencalc-summary .preview-large{height:160px}}.fencalc-fields-grid{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:16px;align-items:start;margin-top:12px}.fencalc-fields-grid .fencalc-col{display:flex;flex-direction:column;gap:12px}.fencalc-col .fencalc-row{margin:0}@media (max-width:900px){.fencalc-fields-grid{grid-template-columns:1fr 1fr}}@media (max-width:480px){.fencalc-fields-grid{grid-template-columns:1fr}}@media (max-width:768px){.fencalc-tabs-head{flex-wrap:nowrap;overflow-x:auto;padding-bottom:5px}.fencalc-tabs-head a{white-space:nowrap;font-size:14px;padding:8px 12px}.fencalc-modal-inner{width:98%;margin:10px auto;max-height:95vh}.fencalc-modal-content{padding:16px}}