:root{--font: Inter, system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono: ui-monospace, "Cascadia Code", Consolas, monospace;--bg: #f3f5f8;--surface: #ffffff;--surface-2: #f6f8fb;--border: #d9dfe8;--text: #1b2430;--text-muted: #5c6877;--accent: #1d5fd1;--accent-hover: #174fb0;--accent-soft: #e6eefc;--accent-contrast: #ffffff;--success: #1e8a4c;--success-soft: #e5f5ec;--danger: #c62f2f;--danger-soft: #fbe9e9;--focus: #1d5fd1;--shadow: 0 1px 2px rgba(20, 30, 50, .06), 0 4px 14px rgba(20, 30, 50, .05);--radius: 10px;--radius-sm: 6px;font-family:var(--font);line-height:1.5;font-weight:400;color-scheme:light dark;color:var(--text);background-color:var(--bg);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}@media (prefers-color-scheme: dark){:root{--bg: #12161c;--surface: #1b212a;--surface-2: #222a35;--border: #313a47;--text: #e7ebf1;--text-muted: #9aa6b5;--accent: #5b9bff;--accent-hover: #7ab0ff;--accent-soft: #1f2f4a;--accent-contrast: #0b1220;--success: #4cc489;--success-soft: #1a2f26;--danger: #ff7b7b;--danger-soft: #3a2224;--focus: #7ab0ff;--shadow: 0 1px 2px rgba(0, 0, 0, .4)}}*,*:before,*:after{box-sizing:border-box}body{margin:0;min-width:960px;background:var(--bg);color:var(--text)}h1,h2,h3,p,ul{margin:0}ul{padding:0;list-style:none}[hidden]{display:none!important}:focus-visible{outline:2px solid var(--focus);outline-offset:2px}button{font:inherit;color:inherit;cursor:pointer}button:disabled{cursor:not-allowed}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.app-header{display:flex;align-items:center;padding:0 24px;height:56px;background:var(--surface);border-bottom:1px solid var(--border)}.app-header h1{font-size:1.1rem;font-weight:650;letter-spacing:.01em}.app-layout{display:grid;grid-template-columns:240px minmax(420px,720px) 320px;justify-content:center;gap:24px;align-items:start;max-width:1400px;margin:0 auto;padding:24px}.main{min-width:0}.page-title{font-size:1.5rem;font-weight:650;margin-bottom:16px}.card{padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.sidebar,.history{position:sticky;top:24px;max-height:calc(100vh - 48px);overflow-y:auto}.sidebar-search{margin-bottom:16px}.sidebar-empty{color:var(--text-muted);font-size:.9rem}.nav-group+.nav-group{margin-top:12px;padding-top:12px;border-top:1px solid var(--border)}.nav-group ul{margin:0 0 0 10px;padding:0 0 0 8px;list-style:none;border-left:1px solid var(--border)}.nav-group-title{margin:0 0 6px 10px;font-size:.7rem;cursor:default;-webkit-user-select:none;user-select:none;font-weight:650;letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted)}.nav-item{display:flex;flex-direction:column;align-items:flex-start;width:100%;padding:8px 10px;border:0;border-radius:var(--radius-sm);background:transparent;text-align:left;cursor:pointer;transition:background .15s}.nav-item:hover:not(:disabled){background:var(--surface-2)}.nav-item--active,.nav-item--active:hover:not(:disabled){background:var(--accent-soft);color:var(--accent);font-weight:600;box-shadow:inset 3px 0 0 var(--accent)}.nav-item:disabled{cursor:not-allowed;color:var(--text-muted);opacity:.8}.nav-item small{font-size:.75rem;font-weight:400;font-style:italic}.form-group{margin-bottom:16px}.form-group label{display:block;margin-bottom:6px;font-size:.875rem;font-weight:550;color:var(--text-muted)}.form-grid,.pipe-schedule-container,.welding-selectors{display:grid;grid-template-columns:1fr 1fr;column-gap:16px}.pipe-schedule-container .form-group:first-child{grid-column:1 / -1}input[type=text],input[type=search],select{width:100%;padding:9px 12px;font:inherit;color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);transition:border-color .15s,box-shadow .15s}input::placeholder{color:var(--text-muted);opacity:.7}input[type=text]:hover,input[type=search]:hover,select:hover{border-color:var(--text-muted)}input[type=text]:focus,input[type=search]:focus,select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.input-wrap{position:relative}.input-wrap input.has-unit{padding-right:44px}.input-unit{position:absolute;top:50%;right:12px;transform:translateY(-50%);font-size:.85rem;color:var(--text-muted);pointer-events:none}.input-sum{margin-top:4px;font-size:.85rem;color:var(--text-muted)}.input-sum--invalid{color:var(--danger)}.radio-group{display:flex;gap:8px;margin-bottom:16px;padding:4px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm)}.radio-label{display:flex;flex:1;align-items:center;justify-content:center;gap:8px;padding:6px 12px;border-radius:4px;font-size:.9rem;cursor:pointer}.radio-label:has(input:checked){background:var(--surface);box-shadow:var(--shadow);font-weight:600}.radio-label input{accent-color:var(--accent)}.calculator-actions{display:flex;gap:12px;margin-top:8px}.btn{display:inline-flex;align-items:center;gap:10px;padding:9px 18px;font-weight:600;border:1px solid transparent;border-radius:var(--radius-sm);transition:background .15s,border-color .15s}.btn--primary{background:var(--accent);color:var(--accent-contrast)}.btn--primary:hover:not(:disabled){background:var(--accent-hover)}.btn--primary:disabled{opacity:.6}.btn--secondary{background:var(--surface);border-color:var(--border)}.btn--secondary:hover{background:var(--surface-2)}.btn--text{padding:4px 8px;background:transparent;color:var(--accent);font-size:.875rem}.btn--text:hover{background:var(--accent-soft)}kbd{padding:1px 6px;font-family:var(--font-mono);font-size:.7rem;font-weight:500;border:1px solid currentColor;border-radius:4px;opacity:.7}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;font-size:1.1rem;line-height:1;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm)}.icon-btn:hover{background:var(--surface-2)}.copy-btn{display:inline-flex;flex-shrink:0;align-items:center;justify-content:center;width:32px;height:32px;padding:0;background:transparent;color:var(--text-muted);border:1px solid transparent;border-radius:var(--radius-sm)}.copy-btn:hover{background:var(--surface-2);border-color:var(--border);color:var(--text)}.copy-btn--ok{color:var(--success)}.copy-btn--error{color:var(--danger)}.holes{margin-bottom:16px}.holes-toggle{display:inline-flex;align-items:center;gap:8px;padding-left:0}.badge{min-width:20px;padding:0 6px;font-size:.75rem;text-align:center;color:var(--accent-contrast);background:var(--accent);border-radius:10px}.holes-panel{margin-top:8px;padding:16px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm)}.holes-panel h3{margin:0 0 8px;font-size:.85rem;font-weight:650}.holes-panel h3:not(:first-child){margin-top:16px}.holes-row{display:grid;grid-template-columns:repeat(var(--cols, 3),minmax(0,1fr)) 72px;gap:8px;align-items:center;margin-bottom:6px}.holes-row--head{margin-bottom:2px;font-size:.75rem;color:var(--text-muted)}.holes-row-actions{display:flex;gap:4px}.result{margin-top:20px;padding:16px 20px;border:1px solid var(--border);border-left-width:4px;border-radius:var(--radius)}.result--success{background:var(--success-soft);border-color:var(--success)}.result--error{background:var(--danger-soft);border-color:var(--danger)}.result-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.result-row+.result-row{margin-top:12px}.result-value{font-size:2.25rem;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums}.result-unit{margin-left:6px;font-size:1.1rem;font-weight:500;color:var(--text-muted)}.result-caption{margin-top:2px;font-size:.85rem;color:var(--text-muted)}.result-text{font-weight:600}.result--error .result-text{color:var(--danger);font-weight:500}.result--error-text{margin-bottom:12px;color:var(--danger);font-size:.9rem}.mass-calculator{margin-top:24px;padding:20px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius)}.mass-calculator h3{font-size:1rem;font-weight:650}.mass-calculator-hint{margin:2px 0 16px;font-size:.85rem;color:var(--text-muted)}.mass-calculator-result{padding-top:4px}.history{padding:16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}.history-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.history-header h2{font-size:.95rem;font-weight:650}.history-empty{font-size:.875rem;color:var(--text-muted)}.history-item{padding:10px 0;border-bottom:1px solid var(--border)}.history-item:last-child{border-bottom:0}.history-meta{display:block;margin-bottom:2px;font-size:.75rem;color:var(--text-muted)}.history-text{font-size:.9rem;font-weight:550}.alt-source{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;padding:12px 16px;font-size:.9rem;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm)}.alt-source p{flex:1 1 280px}.alt-source-actions{display:flex;gap:8px}.alt-results{display:flex;flex-direction:column;gap:16px;margin-top:8px}.alt-row{padding:16px;border:1px solid var(--border);border-radius:var(--radius)}.alt-row-head{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.alt-row-head h3{font-size:1.05rem;font-weight:650}.alt-row-meta{margin-top:2px;font-size:.85rem;color:var(--text-muted)}.alt-columns{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:12px}.alt-column h4{margin-bottom:6px;font-size:.75rem;font-weight:650;letter-spacing:.03em;text-transform:uppercase;color:var(--text-muted)}.alt-column ul{margin:0;padding:0;list-style:none}.alt-item{padding:6px 0;border-bottom:1px solid var(--border)}.alt-item:last-child{border-bottom:0}.alt-material{font-weight:550}.alt-conditions,.alt-remark{font-size:.85rem;color:var(--text-muted)}.alt-remark{margin-top:6px;font-style:italic}.alt-notes{margin:12px 0 0;padding:10px 12px;font-size:.85rem;background:var(--accent-soft);border-radius:var(--radius-sm)}.alt-notes div+div{margin-top:6px}.alt-notes dt{display:inline;font-weight:650}.alt-notes dt:after{content:": "}.alt-notes dd{display:inline;margin:0}.alt-rules{padding:12px 16px;font-size:.9rem;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm)}.alt-rules h3,.alt-section-title{margin-bottom:6px;font-size:.95rem;font-weight:650}.alt-rules ul{margin:0;padding-left:20px}.alt-rules li+li{margin-top:4px}.alt-similar p{margin-bottom:8px;font-size:.9rem;color:var(--text-muted)}.alt-similar-list{display:flex;flex-wrap:wrap;gap:6px}.alt-table-wrap{overflow-x:auto}.alt-table{width:100%;font-size:.85rem;border-collapse:collapse}.alt-table th,.alt-table td{padding:6px 8px;text-align:left;border-bottom:1px solid var(--border)}.alt-table th{font-weight:650;color:var(--text-muted)}.alt-table small{color:var(--text-muted)}.alt-form{padding:1px 8px;font-size:.8rem;font-weight:600;color:var(--accent);background:var(--accent-soft);border-radius:10px}.alt-original{font-size:.75rem;font-style:italic;color:var(--text-muted);opacity:.8}.alt-remark-text:before{content:"Dla całej kolumny: "}.alt-similar-list small{font-weight:400;color:var(--text-muted)}.alt-path{padding:1px 6px;font-family:var(--font-mono);font-size:.85em;background:var(--surface);border:1px solid var(--border);border-radius:4px;-webkit-user-select:all;user-select:all}.alt-column--primary{grid-column:1 / -1;padding:12px 14px;background:var(--accent-soft);border:1px solid var(--accent);border-radius:var(--radius-sm)}.alt-column--primary h4{color:var(--accent)}.alt-no-primary{grid-column:1 / -1;font-size:.85rem;color:var(--text-muted)}
