/* Cable Tray Calculator — shared UI layer (index.html + admin.html)
   Flowbite / shadcn / daisyUI-style components, hand-rolled: no runtime dependency, no animation loops. */
:root{--bg:#f3f5f9;--sf:#fff;--ln:#e2e8f0;--ln2:#cbd5e1;--ink:#0f172a;--mut:#64748b;--pri:#2563eb;--pri-d:#1d4ed8;
--navy:#0b1b3a;--ok:#16a34a;--warn:#d97706;--bad:#dc2626;--sh:0 1px 2px rgba(15,23,42,.05),0 6px 18px rgba(15,23,42,.05);
--ring:0 0 0 3px rgba(37,99,235,.25)}
body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}
*,*::before,*::after{box-sizing:border-box}
body{margin:0}h1,h2,h3,p{margin:0}
button{font-family:inherit}
:focus-visible{outline:none;box-shadow:var(--ring)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- header, rate bar, tabs ---------- */
body header{background:linear-gradient(120deg,#0b1b3a,#17366f);padding:16px 28px;gap:14px;box-shadow:none}
header img{width:40px;height:40px;border-radius:10px;background:#fff;padding:5px;flex:none}
body header h1{font-size:18px;font-weight:700;letter-spacing:-.01em}
body header p{font-size:12.5px;opacity:.72}
body #verBar{background:var(--sf);border-bottom:1px solid var(--ln);padding:12px 28px;gap:8px}
body #verBar .vt{font-size:11px;font-weight:700;color:var(--mut);letter-spacing:.06em}
body #verBar .vb{padding:6px 14px;border:1px solid var(--ln2);border-radius:8px;font-size:12.5px;font-weight:600;color:#475569;background:var(--sf);transition:background .15s,color .15s}
body #verBar .vb:hover{border-color:var(--pri);color:var(--pri-d)}
body #verBar .vb.active{background:var(--navy);border-color:var(--navy);color:#fff}
body #verBar .info{font-size:12px;color:var(--mut)}
body .tabs{background:var(--sf);border-bottom:1px solid var(--ln);box-shadow:none;padding:0 24px;gap:2px}
body .tab{background:none;border:0;border-bottom:2px solid transparent;border-radius:0;padding:14px 16px;font-size:13.5px;font-weight:600;color:var(--mut);margin:0 0 -1px;cursor:pointer;transition:color .15s}
body .tab:hover{color:var(--ink)}
body .tab.active{color:var(--pri-d);border-bottom-color:var(--pri)}
body .tab:focus-visible{border-radius:8px}
body #rateNotice{background:#fffbeb;color:#92400e;border-bottom:1px solid #fde68a;border-left:4px solid var(--warn);font-size:12.5px;font-weight:500;padding:10px 28px}

/* ---------- layout, cards ---------- */
body .page{max-width:1040px;padding:24px}
body .card{background:var(--sf);border:1px solid var(--ln);border-radius:14px;box-shadow:var(--sh);padding:22px 24px;margin-bottom:18px}
body .card h2{font-size:15px;font-weight:700;color:var(--ink);border-bottom:1px solid var(--ln);padding-bottom:12px;margin-bottom:16px}
body .card h2::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--pri);flex:none}
body .grid4{gap:14px}body .grid3{gap:14px}body .grid2{gap:14px}
body .sec-title{font-size:11px;font-weight:700;color:var(--pri-d);letter-spacing:.08em;margin:20px 0 10px}
body .sec-title::after{background:var(--ln)}

/* ---------- forms ---------- */
body label{min-height:24px;display:flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:#475569;text-transform:none;letter-spacing:0;margin-bottom:6px}
body input[type=number],body input[type=text],body input[type=email],body input[type=password],body input[type=search],body select{
width:100%;height:40px;padding:0 12px;border:1px solid var(--ln2);border-radius:10px;font:inherit;font-size:14px;color:var(--ink);background-color:#fff;transition:border-color .15s,box-shadow .15s}
body input:hover:not([readonly]),body select:hover{border-color:#94a3b8}
body input:focus,body select:focus{outline:none;border-color:var(--pri);box-shadow:var(--ring);background-color:#fff}
body input[readonly]{background-color:#f1f5f9;color:var(--mut);cursor:not-allowed}
body input.locked,body input.masked{padding-right:34px}
body input.locked:focus,body input.masked:focus{border-color:var(--ln2);box-shadow:none}
body input.is-invalid{border-color:var(--bad);box-shadow:0 0 0 3px rgba(220,38,38,.14)}
.field-msg{color:var(--bad);font-size:11.5px;margin-top:4px;font-weight:500}
body .lockbtn{margin-left:auto;width:24px;height:24px;border-radius:6px;display:inline-grid;place-items:center;font-size:13px;transition:background .15s}
body .lockbtn:hover{background:#e2e8f0}
body .toggle-row{background:#f1f5f9;border:0;padding:4px;border-radius:12px;gap:4px;flex-wrap:wrap}
body .tbtn{flex:1 1 auto;border:0;background:transparent;border-radius:9px;padding:9px 14px;font:inherit;font-size:13px;font-weight:600;color:#475569;cursor:pointer;transition:background .15s,color .15s}
body .tbtn:hover{color:var(--ink);background:rgba(255,255,255,.6)}
body .tbtn.active{background:#fff;color:var(--pri-d);box-shadow:0 1px 3px rgba(15,23,42,.14)}
body .size-grid{gap:8px}
body .size-btn{padding:7px 12px;border:1px solid var(--ln2);border-radius:8px;font-size:12px;font-weight:600;color:#475569;background:#fff}
body .size-btn:hover{border-color:var(--pri);color:var(--pri-d)}
body .size-btn.active{background:var(--pri);border-color:var(--pri);color:#fff}

/* ---------- results ---------- */
body .results{background:var(--sf);border:1px solid var(--ln);border-radius:14px;box-shadow:var(--sh);padding:22px 24px;margin:0 0 18px}
body .results h3{font-size:14px;font-weight:700;color:var(--ink);text-transform:none;letter-spacing:0;margin-bottom:16px}
body .res-grid{grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:12px}
body .res-item{background:#f8fafc;border:1px solid var(--ln);border-radius:12px;padding:12px 14px}
body .res-item.hi{background:linear-gradient(135deg,#0b1b3a,#1e3a8a);border-color:transparent}
body .res-item .rl{font-size:11px;font-weight:600;color:var(--mut);letter-spacing:.05em}
body .res-item .rv{font-size:22px;font-weight:800;letter-spacing:-.02em;color:var(--ink);font-variant-numeric:tabular-nums}
body .res-item.hi .rl{color:#a9c1ee}body .res-item.hi .rv{color:#fff}
body .res-item .ru{font-size:11px;color:#94a3b8}body .res-item.hi .ru{color:#8fb0e6}
body .note{font-size:12px;font-style:normal;color:var(--mut);margin-top:14px}
.table-wrap{overflow-x:auto;border:1px solid var(--ln);border-radius:12px;margin-top:18px;background:#fff}
.table-wrap>table{margin:0!important;min-width:480px}
body .fit-table,body .sum-table{font-size:13px}
body .fit-table th,body .sum-table th{background:#f8fafc;color:#475569;font-size:11.5px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;padding:11px 16px;border-bottom:1px solid var(--ln)}
body .fit-table td,body .sum-table td{padding:11px 16px;border-bottom:1px solid #eef2f7}
body .fit-table tr:last-child td,body .sum-table tr:last-child td{border-bottom:0}
body .fit-table th:not(:first-child),body .fit-table td:not(:first-child){text-align:right;font-variant-numeric:tabular-nums}
body .fit-table td:first-child{font-weight:600}
body .fit-table td:not(:first-child){color:var(--ink);font-weight:600}
body .fit-table tr:hover td,body .sum-table tr:hover td{background:#f8fafc}
body .sum-table .big{color:var(--pri-d)}

/* ---------- admin mode (setup iframe) ---------- */
body.adminmode header{display:none}
body #adminBar{background:#fff;color:var(--ink);border-bottom:1px solid var(--ln);box-shadow:0 4px 14px rgba(15,23,42,.06);padding:12px 28px;gap:14px;font-size:13px}
body #adminBar>b:first-child{background:var(--navy);color:#fff;border-radius:6px;padding:3px 9px;font-size:11px;letter-spacing:.08em}
body #adminBar span{color:var(--mut)}body #adminBar span b{color:var(--pri-d)}
body #adminBar button{background:var(--pri);border-radius:10px;padding:8px 20px;font-weight:600;transition:background .15s}
body #adminBar button:hover:not(:disabled){background:var(--pri-d)}
body #adminBar button:disabled{background:#cbd5e1;color:#fff}
body #adminStatus{margin-left:auto;font-weight:600;color:var(--warn)}
body .adminonly{border-left:4px solid var(--warn)}

/* ---------- shared components: buttons, badges, dialog, toast ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:38px;padding:0 16px;border:1px solid var(--ln2);border-radius:10px;background:#fff;color:var(--ink);font-size:13.5px;font-weight:600;cursor:pointer;transition:background .15s,border-color .15s}
.btn:hover{background:#f8fafc;border-color:#94a3b8}
.btn-pri{background:var(--pri);border-color:var(--pri);color:#fff}.btn-pri:hover{background:var(--pri-d);border-color:var(--pri-d)}
.btn-ok{background:var(--ok);border-color:var(--ok);color:#fff}.btn-ok:hover{background:#15803d;border-color:#15803d}
.btn-bad{background:var(--bad);border-color:var(--bad);color:#fff}.btn-bad:hover{background:#b91c1c;border-color:#b91c1c}
.btn-sm{height:32px;padding:0 12px;font-size:12.5px;border-radius:8px}
.btn-ghost{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.22);color:#fff}.btn-ghost:hover{background:rgba(255,255,255,.2);border-color:rgba(255,255,255,.35)}
.btn:disabled{opacity:.55;cursor:default}
.badge{display:inline-flex;align-items:center;gap:6px;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:600}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.badge.ok{background:#dcfce7;color:#166534}.badge.warn{background:#fef3c7;color:#92400e}.badge.info{background:#e0e7ff;color:#3730a3}
dialog.dlg{border:0;border-radius:16px;padding:0;width:calc(100% - 32px);max-width:420px;box-shadow:0 24px 60px rgba(15,23,42,.35);color:var(--ink)}
dialog.dlg::backdrop{background:rgba(15,23,42,.55)}
.dlg-b{padding:24px}.dlg-b h3{font-size:16px;font-weight:700;margin-bottom:6px}.dlg-b p{color:var(--mut);font-size:13.5px}
.dlg-f{display:flex;justify-content:flex-end;gap:8px;padding:14px 24px;background:#f8fafc;border-top:1px solid var(--ln)}
.toasts{position:fixed;right:16px;bottom:16px;display:grid;gap:8px;z-index:200}
.toast{background:var(--ink);color:#fff;padding:11px 16px;border-radius:10px;font-size:13px;font-weight:500;box-shadow:0 10px 30px rgba(15,23,42,.3)}
.toast.err{background:#b91c1c}.toast.ok{background:#15803d}

/* ---------- admin.html ---------- */
.adm-top{background:linear-gradient(120deg,#0b1b3a,#17366f);color:#fff}
.adm-in{max-width:1240px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:14px}
.adm-in img{width:38px;height:38px;border-radius:10px;background:#fff;padding:5px}
.adm-in h1{font-size:16px;font-weight:700;line-height:1.2}.adm-in small{font-size:12px;opacity:.7}
.adm-in .sp{flex:1}
.adm-main{max-width:1240px;margin:0 auto;padding:24px}
.adm-h{font-size:20px;font-weight:700;letter-spacing:-.01em}.adm-sub{color:var(--mut);margin:2px 0 18px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:18px}
.stat{background:#fff;border:1px solid var(--ln);border-radius:14px;box-shadow:var(--sh);padding:16px 18px}
.stat b{display:block;font-size:26px;font-weight:800;letter-spacing:-.02em;line-height:1.2}.stat span{font-size:12px;color:var(--mut);font-weight:600}
.panel{background:#fff;border:1px solid var(--ln);border-radius:14px;box-shadow:var(--sh);overflow:hidden}
.toolbar{display:flex;gap:10px;align-items:center;padding:14px 16px;border-bottom:1px solid var(--ln)}
.toolbar input{max-width:320px}
.tbl{width:100%;border-collapse:collapse;font-size:13.5px}
.tbl th{text-align:left;background:#f8fafc;color:#475569;font-size:11.5px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;padding:11px 16px;border-bottom:1px solid var(--ln)}
.tbl td{padding:12px 16px;border-bottom:1px solid #eef2f7;vertical-align:middle}
.tbl tr:last-child td{border-bottom:0}.tbl tbody tr:hover td{background:#f8fafc}
.tbl .act{text-align:right}
.who{display:flex;align-items:center;gap:12px}
.avatar{width:34px;height:34px;border-radius:50%;background:#e0e7ff;color:#3730a3;font-weight:700;font-size:12px;display:grid;place-items:center;flex:none}
.empty{color:var(--mut);text-align:center;padding:32px 16px}
.frame-card{background:#fff;border:1px solid var(--ln);border-radius:14px;box-shadow:var(--sh);overflow:hidden}
#setupFrame{width:100%;height:calc(100vh - 190px);min-height:560px;border:0;display:block;background:var(--bg)}
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(900px 420px at 50% -10%,rgba(37,99,235,.14),transparent),var(--bg)}
.login-card{width:100%;max-width:400px;background:#fff;border:1px solid var(--ln);border-radius:18px;box-shadow:0 20px 50px rgba(15,23,42,.1);padding:32px}
.login-card .logo{width:52px;height:52px;border-radius:14px;background:#fff;border:1px solid var(--ln);padding:7px;margin:0 auto 16px;display:block}
.login-card h1{font-size:19px;text-align:center;font-weight:700}.login-card .adm-sub{text-align:center;margin-bottom:22px}
.login-card .f{margin-bottom:14px}.login-card .btn{width:100%;height:42px;margin-top:6px}
.login-msg{font-size:13px;text-align:center;margin-top:12px;color:var(--bad);min-height:18px}
.hidden{display:none!important}

/* ---------- responsive + motion ---------- */
@media(max-width:880px){body .grid4,body .grid3{grid-template-columns:1fr 1fr}.stats{grid-template-columns:1fr}}
@media(max-width:560px){
  body .grid2,body .grid3,body .grid4{grid-template-columns:1fr}
  body .page{padding:14px}body .card,body .results{padding:16px}
  body header{padding:14px 16px}body #verBar,body #rateNotice,body #adminBar{padding-left:16px;padding-right:16px}
  body .tabs{padding:0 8px}.adm-main{padding:16px}.toolbar input{max-width:none}
  .tbl th:nth-child(3),.tbl td:nth-child(3){display:none}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}