:root{--bg:#f5f6f8;--card:#fff;--text:#17191c;--muted:#70757d;--line:#e4e6ea;--accent:#121826;--ok:#176b43;--okbg:#e8f7ef;--danger:#9d2b2b;--dangerbg:#fff0f0}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.45 Inter,Arial,sans-serif}header{height:68px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 4vw;position:sticky;top:0;z-index:5}.brand{display:flex;gap:14px;align-items:center}.brand strong{font-size:22px;letter-spacing:.08em}.brand span{color:var(--muted)}nav{display:flex;gap:24px}a{color:inherit;text-decoration:none}nav a:hover,.section-head a,table a{color:#3456d1}main{max-width:1260px;margin:0 auto;padding:34px 28px 70px}.hero{background:var(--accent);color:#fff;padding:42px;border-radius:22px;display:flex;justify-content:space-between;align-items:end;margin-bottom:34px}.hero h1{font-size:36px;max-width:680px;margin:7px 0 12px}.hero p{color:#cfd4df;max-width:720px}.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:12px;font-weight:700;color:#65707f}.hero .eyebrow{color:#98a8c5}.primary{display:inline-flex;align-items:center;justify-content:center;background:#1b2436;color:#fff;border:0;border-radius:10px;padding:11px 17px;font-weight:700;cursor:pointer}.primary.big{padding:14px 22px;font-size:16px}.hero .primary{background:#fff;color:#101522}.page-title{display:flex;justify-content:space-between;align-items:center;margin:5px 0 26px}.page-title h1{font-size:34px;margin:4px 0}.page-title p{margin:0;color:var(--muted)}section.card,.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px;margin-bottom:18px}.card h2{font-size:18px;margin:0 0 20px}.fields{display:grid;gap:16px}.cols3{grid-template-columns:repeat(3,minmax(0,1fr))}.cols4{grid-template-columns:repeat(4,minmax(0,1fr))}.span2{grid-column:span 2}.span3{grid-column:span 3}label{display:flex;flex-direction:column;gap:7px;font-size:13px;font-weight:650}input,select,textarea{width:100%;background:#fff;border:1px solid #cfd3da;border-radius:9px;padding:10px 11px;font-family:Inter,Arial,sans-serif;font-size:15px;line-height:1.45;font-weight:400;outline:none}input:focus,select:focus{border-color:#667cae;box-shadow:0 0 0 3px rgba(70,95,150,.10)}.muted{color:var(--muted);font-weight:400}.check{flex-direction:row;align-items:center;margin-top:22px}.check input{width:auto}.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.section-head h2{margin:0}.badge{font-size:12px;font-weight:700;background:#eef1f6;padding:6px 9px;border-radius:100px}.calc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}.calc-grid.four{grid-template-columns:repeat(4,1fr)}.calc-grid>div{background:#f6f7f9;border:1px solid #e4e6ea;border-radius:12px;padding:15px}.calc-grid span{display:block;color:var(--muted);font-size:12px}.calc-grid strong{display:block;font-size:20px;margin-top:4px}.calc-grid .accent{background:#eef2ff;border-color:#d7dff8}.calc-grid .control.ok{background:var(--okbg);border-color:#b8e2cb}.calc-grid .control.bad{background:var(--dangerbg);border-color:#efc2c2}.calc-grid small{display:block;margin-top:6px}.formula{color:var(--muted);font-size:13px;margin:16px 2px 0}.submitbar{position:sticky;bottom:18px;background:#fff;border:1px solid var(--line);box-shadow:0 12px 35px rgba(15,20,30,.12);padding:15px 18px;border-radius:15px;display:flex;justify-content:space-between;align-items:center;z-index:4}.table-wrap{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:auto}table{border-collapse:collapse;width:100%}th,td{text-align:left;padding:13px 14px;border-bottom:1px solid var(--line);white-space:nowrap}th{background:#fafbfc;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.05em}.mono{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.alert{background:var(--dangerbg);color:var(--danger);padding:11px;border-radius:9px;margin-bottom:14px}.alert.wide{padding:15px;margin-bottom:20px}.login-body{min-height:100vh;display:grid;place-items:center;background:#121826}.login-card{width:min(420px,90vw);background:#fff;border-radius:20px;padding:34px}.login-card .logo{font-size:28px;font-weight:800;letter-spacing:.12em}.login-card h1{margin:12px 0 4px}.login-card p{color:var(--muted);margin:0 0 26px}.login-card form{display:grid;gap:16px}.summary{margin:0}.summary div{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--line)}.summary dt{color:var(--muted)}.summary dd{font-weight:700;margin:0}.summary .total{font-size:17px}.ok{margin-top:15px;background:var(--okbg);color:var(--ok);padding:10px;border-radius:9px;font-weight:700}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}@media(max-width:850px){nav{gap:10px;font-size:13px}.hero{display:block}.hero .primary{margin-top:18px}.cols3,.cols4,.calc-grid,.calc-grid.four,.grid2{grid-template-columns:1fr}.span2,.span3{grid-column:auto}.submitbar{position:static;gap:15px;align-items:stretch;flex-direction:column}}
.directory-picker{display:flex;align-items:end;gap:18px;background:#f8f9fb;border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:18px}.directory-picker label{min-width:min(520px,65%);flex:1}.secondary{display:inline-flex;align-items:center;justify-content:center;background:#fff;color:#1b2436;border:1px solid #cfd3da;border-radius:10px;padding:10px 15px;font-weight:700}.button-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.actions{display:flex;gap:12px}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:0 0 30px}.stat-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:18px 20px;display:block}.stat-card span,.stat-card small{display:block;color:var(--muted)}.stat-card strong{display:block;font-size:30px;margin:4px 0}.stat-card:hover{border-color:#bfc6d3;box-shadow:0 5px 16px rgba(15,20,30,.05)}
@media(max-width:850px){.directory-picker{display:block}.directory-picker label{min-width:0}.directory-picker .muted{display:block;margin-top:8px}.button-row{align-items:stretch}.stat-grid{grid-template-columns:1fr}}

/* v0.5: statuses, validation and operation card */
.title-with-badge{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.title-with-badge h1{margin:0}.status-badge{display:inline-flex;align-items:center;border-radius:999px;padding:5px 10px;font-size:12px;font-weight:700;white-space:nowrap}.status-ready{background:#e8f7ee;color:#166534;border:1px solid #bbebcb}.status-draft{background:#fff7e6;color:#925f08;border:1px solid #f2d99c}.operation-meta{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;margin-bottom:20px;padding:0;overflow:hidden}.operation-meta>div{padding:18px 20px;border-right:1px solid #e5e7eb}.operation-meta>div:last-child{border-right:0}.operation-meta span{display:block;color:#6b7280;font-size:12px;text-transform:uppercase;letter-spacing:.04em;margin-bottom:5px}.operation-meta strong{font-size:15px}.checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.check-item{display:flex;align-items:center;gap:10px;border:1px solid #e5e7eb;border-radius:12px;padding:12px 14px}.check-item>span{display:flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;font-weight:800}.check-ok>span{background:#e8f7ee;color:#166534}.check-bad>span{background:#feecec;color:#b42318}.draft-callout{border-style:dashed}.submitbar .button-row{justify-content:flex-end}.operation-form input[readonly]{background:#f6f7f9;color:#4b5563}.table-wrap .status-badge{font-size:11px}
@media(max-width:850px){.operation-meta{grid-template-columns:1fr 1fr}.operation-meta>div:nth-child(2){border-right:0}.operation-meta>div:nth-child(-n+2){border-bottom:1px solid #e5e7eb}.checklist{grid-template-columns:1fr}}

/* v0.6: all form controls use one interface font; machine data fields are no longer monospace. */
input,select,textarea,button{font-family:Inter,Arial,sans-serif!important}
.operation-form .mono,form .mono{font-family:Inter,Arial,sans-serif!important}

/* v0.7: administration, multi-user access and backups */
.narrow-card{max-width:620px}.form-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}.wide-ok{margin-bottom:20px}.small-btn{padding:7px 10px;font-size:12px}.inline-reset{display:flex;gap:8px;align-items:center}.inline-reset input{min-width:150px;padding:7px 9px;font-size:13px}.backup-head{display:flex;justify-content:space-between;align-items:center;gap:24px}.backup-head h2{margin-bottom:6px}.backup-head p{margin:0;max-width:760px}nav{flex-wrap:wrap;justify-content:flex-end}
@media(max-width:1000px){header{height:auto;min-height:68px;padding-top:12px;padding-bottom:12px}.brand span{display:none}nav{gap:12px}.backup-head{align-items:stretch;flex-direction:column}.inline-reset{flex-wrap:wrap}}