:root{--bg:#0f172a;--bg2:#1e293b;--card:#1e293b;--border:#334155;--text:#f1f5f9;--muted:#94a3b8;
--blue:#3b82f6;--green:#10b981;--red:#ef4444;--amber:#f59e0b;--purple:#8b5cf6;--cyan:#06b6d4;}
*{margin:0;padding:0;box-sizing:border-box;font-family:'Segoe UI',Tahoma,sans-serif}
body{background:var(--bg);color:var(--text)}
.hidden{display:none!important}
button{cursor:pointer;font-family:inherit}
input,select,textarea{font-family:inherit}
/* LOGIN */
#loginScreen{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0f172a,#1e293b)}
.login-box{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:40px;width:100%;max-width:420px}
.login-box h1{text-align:center;color:var(--cyan);margin-bottom:6px}
.login-box .sub{text-align:center;color:var(--muted);font-size:13px;margin-bottom:24px}
.field{margin-bottom:14px}
.field label{display:block;font-size:12px;color:var(--muted);font-weight:600;margin-bottom:5px}
.field input,.field select,.field textarea{width:100%;padding:10px 12px;background:var(--bg);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:14px}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue)}
.btn{padding:9px 16px;border:none;border-radius:8px;font-weight:600;font-size:13px;display:inline-flex;align-items:center;gap:6px;transition:.2s}
.btn:hover{filter:brightness(1.1)}
.btn-blue{background:var(--blue);color:#fff}.btn-green{background:var(--green);color:#fff}
.btn-red{background:var(--red);color:#fff}.btn-amber{background:var(--amber);color:#fff}
.btn-gray{background:#334155;color:var(--text)}.btn-purple{background:var(--purple);color:#fff}
.btn-sm{padding:5px 10px;font-size:12px}
.btn-block{width:100%;justify-content:center}
.btn[disabled]{opacity:.5;cursor:not-allowed}
/* LAYOUT */
#appScreen{display:none}
.shell{display:flex;min-height:100vh}
.sidebar{width:230px;background:#0b1220;border-right:1px solid var(--border);position:fixed;top:0;bottom:0;overflow-y:auto;padding:14px 10px}
.sidebar .brand{padding:6px 10px 14px;border-bottom:1px solid var(--border);margin-bottom:10px}
.sidebar .brand b{color:var(--cyan);font-size:16px}
.sidebar .brand small{display:block;color:var(--muted);font-size:11px}
.navbtn{display:flex;align-items:center;gap:10px;width:100%;text-align:left;padding:10px 12px;border:none;background:none;color:var(--muted);border-radius:8px;font-size:13.5px;margin-bottom:2px}
.navbtn:hover{background:var(--bg2);color:var(--text)}
.navbtn.active{background:var(--blue);color:#fff}
.main{margin-left:230px;flex:1;padding:20px 24px}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;gap:10px;flex-wrap:wrap}
.topbar h2{font-size:20px}
.topbar .co{color:var(--muted);font-size:13px}
/* CARDS / TABLES */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px;margin-bottom:16px}
.stat{background:var(--card);border:1px solid var(--border);border-left:4px solid var(--blue);border-radius:10px;padding:14px 16px}
.stat .lbl{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;font-weight:700}
.stat .val{font-size:20px;font-weight:800;margin-top:4px}
.stat .sub{font-size:11px;color:var(--muted)}
.g{color:var(--green)}.r{color:var(--red)}.b{color:var(--blue)}.a{color:var(--amber)}.p{color:var(--purple)}.c{color:var(--cyan)}
.stat.green{border-left-color:var(--green)}.stat.red{border-left-color:var(--red)}
.stat.amber{border-left-color:var(--amber)}.stat.purple{border-left-color:var(--purple)}.stat.cyan{border-left-color:var(--cyan)}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px;margin-bottom:16px}
.card h3{font-size:15px;margin-bottom:12px}
.tblwrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border);vertical-align:top}
th{background:#111c2e;color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.5px}
tr:hover td{background:#22304a}
.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:700}
.bg-green{background:rgba(16,185,129,.15);color:var(--green)}.bg-red{background:rgba(239,68,68,.15);color:var(--red)}
.bg-amber{background:rgba(245,158,11,.15);color:var(--amber)}.bg-blue{background:rgba(59,130,246,.15);color:var(--blue)}
.bg-purple{background:rgba(139,92,246,.15);color:var(--purple)}.bg-gray{background:#334155;color:var(--text)}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:14px}
.toolbar input,.toolbar select{background:var(--bg);border:1px solid var(--border);color:var(--text);padding:8px 10px;border-radius:8px;font-size:13px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
.tabs{display:flex;gap:8px;margin-bottom:14px}
.tabs button{padding:8px 16px;border:1px solid var(--border);background:var(--card);color:var(--muted);border-radius:8px;font-size:13px;font-weight:600}
.tabs button.active{background:var(--blue);color:#fff;border-color:var(--blue)}
@media(max-width:800px){.grid2,.grid3{grid-template-columns:1fr}.sidebar{width:64px}.sidebar .brand small,.sidebar .brand b span,.navbtn span.t{display:none}.main{margin-left:64px}}
/* MODAL */
.modalbg{position:fixed;inset:0;background:rgba(2,6,17,.75);z-index:1000;display:flex;align-items:flex-start;justify-content:center;padding:30px 14px;overflow-y:auto}
.modal{background:var(--card);border:1px solid var(--border);border-radius:14px;width:100%;max-width:760px;padding:22px}
.modal h3{margin-bottom:14px}
.mhead{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.x{background:none;border:none;color:var(--muted);font-size:20px}
.calcbox{background:rgba(59,130,246,.08);border:1px solid var(--blue);border-radius:10px;padding:12px 14px;margin:12px 0}
.calcbox .row{display:flex;justify-content:space-between;padding:3px 0;font-size:13px}
.calcbox .row.tot{border-top:1px solid var(--border);margin-top:6px;padding-top:8px;font-weight:800}
.dynrow{display:grid;grid-template-columns:2fr 1fr auto;gap:8px;margin-bottom:8px}
.dynrow input{width:100%;padding:8px;background:var(--bg);border:1px solid var(--border);border-radius:6px;color:var(--text)}
/* TOAST */
#toast{position:fixed;bottom:24px;right:24px;background:var(--green);color:#fff;padding:12px 22px;border-radius:10px;font-weight:700;font-size:14px;opacity:0;transform:translateY(20px);transition:.3s;z-index:2000}
#toast.show{opacity:1;transform:none}#toast.err{background:var(--red)}
.footer{margin-top:26px;padding:16px;border-top:1px solid var(--border);color:var(--muted);font-size:12px;text-align:center}
.kb{border-left:4px solid var(--cyan);background:var(--bg2);border-radius:8px;padding:14px;margin-bottom:12px}
.kb h4{color:var(--cyan);margin-bottom:6px}
.kb .meta{font-size:11px;color:var(--muted);margin-bottom:8px}
.kb pre{white-space:pre-wrap;font-family:inherit;font-size:13px;color:var(--text);line-height:1.7}
.hint{color:var(--muted);font-size:12px;margin-top:6px}
@media print{.sidebar,.topbar,.toolbar,.no-print,.footer,#toast{display:none!important}.main{margin:0;padding:0}.card{border:none}}