:root{--bg: #f1f5f9;--surface: #ffffff;--surface-2: #f8fafc;--border: #e2e8f0;--text: #0f172a;--muted: #64748b;--muted-2: #94a3b8;--primary: #0ea5e9;--primary-dark: #0284c7;--sidebar: #0b1220;--sidebar-2: #111c30;--sidebar-text: #cbd5e1;--sidebar-active: #0ea5e9;--amber: #f59e0b;--green: #10b981;--red: #ef4444;--radius: 16px;--shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 10px 24px -14px rgba(15, 23, 42, .16);--shadow-lg: 0 24px 60px -16px rgba(15, 23, 42, .28);--ring: rgba(148, 163, 184, .18);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-size:14px;-webkit-font-smoothing:antialiased}a{color:var(--primary-dark);text-decoration:none}h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}.app{display:flex;min-height:100%}.sidebar{width:240px;background:var(--sidebar);color:var(--sidebar-text);display:flex;flex-direction:column;position:fixed;inset:0 auto 0 0;z-index:50}.brand{display:flex;align-items:center;gap:10px;padding:20px 20px 16px;color:#fff;font-weight:800;font-size:18px;letter-spacing:-.02em}.brand img{width:30px;height:30px;border-radius:8px}.brand span b{color:var(--primary)}.nav{flex:1;overflow-y:auto;padding:8px}.nav a{display:flex;align-items:center;gap:12px;padding:11px 14px;margin:2px 0;color:var(--sidebar-text);border-radius:10px;font-weight:500;font-size:14px;transition:background .15s,color .15s}.nav a .ic{width:20px;height:20px;display:inline-flex;align-items:center;justify-content:center;opacity:.85;flex-shrink:0}.nav a.active .ic{opacity:1;color:var(--primary)}.nav a:hover{background:var(--sidebar-2);color:#fff}.nav a.active{background:linear-gradient(90deg,rgba(14,165,233,.18),transparent);color:#fff;box-shadow:inset 3px 0 0 var(--primary)}.nav .nav-sep{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted-2);padding:14px 14px 6px}.sidebar-foot{padding:12px;border-top:1px solid rgba(255,255,255,.06)}.sidebar-foot .user{display:flex;align-items:center;gap:10px;padding:6px 8px}.avatar{width:34px;height:34px;border-radius:50%;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:700;flex-shrink:0}.sidebar-foot .user small{color:var(--muted-2);display:block}.main{flex:1;margin-left:240px;min-width:0;display:flex;flex-direction:column}.topbar{height:62px;background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:30}.topbar h1{font-size:20px}.topbar .actions{display:flex;align-items:center;gap:10px}.content{padding:24px;max-width:1280px;width:100%;margin:0 auto}.hamburger,.mobile-nav{display:none}.card{background:var(--surface);border:1px solid var(--ring);border-radius:var(--radius);box-shadow:var(--shadow)}.stat,.tank-card{transition:transform .16s ease,box-shadow .16s ease}.stat:hover,.tank-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.card-pad{padding:18px}.card-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid var(--border)}.card-head h3{font-size:15px}.grid{display:grid;gap:16px}.grid.cols-2{grid-template-columns:repeat(2,1fr)}.grid.cols-3{grid-template-columns:repeat(3,1fr)}.grid.cols-4{grid-template-columns:repeat(4,1fr)}.row{display:flex;gap:12px;align-items:center}.row.wrap{flex-wrap:wrap}.spacer{flex:1}.mt{margin-top:16px}.mb{margin-bottom:16px}.stat{padding:18px;display:flex;flex-direction:column;gap:6px}.stat .label{color:var(--muted);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.04em}.stat .value{font-size:26px;font-weight:800;letter-spacing:-.02em}.stat .sub{color:var(--muted);font-size:12px}.stat .icon{position:absolute;right:16px;top:16px;font-size:22px;opacity:.3;color:var(--primary);display:inline-flex}.card-head h3{display:flex;align-items:center;gap:8px}.card-head h3 svg{color:var(--muted)}.stat{position:relative;overflow:hidden}.stat.accent{border-top:3px solid var(--primary)}.stat.warn{border-top:3px solid var(--amber)}.stat.danger{border-top:3px solid var(--red)}.stat.good{border-top:3px solid var(--green)}.btn{display:inline-flex;align-items:center;gap:7px;justify-content:center;padding:9px 15px;border-radius:9px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-weight:600;font-size:13.5px;cursor:pointer;transition:all .15s;white-space:nowrap}.btn:hover{background:var(--surface-2)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn.primary:hover{background:var(--primary-dark);border-color:var(--primary-dark)}.btn.danger{background:#fff;border-color:#fecaca;color:var(--red)}.btn.danger:hover{background:#fef2f2}.btn.ghost{border-color:transparent;background:transparent}.btn.ghost:hover{background:var(--surface-2)}.btn.sm{padding:6px 11px;font-size:12.5px}.btn.block{width:100%}.table-wrap{overflow-x:auto}table.tbl{width:100%;border-collapse:collapse;font-size:13.5px}table.tbl th{text-align:left;color:var(--muted);font-weight:600;font-size:11.5px;text-transform:uppercase;letter-spacing:.03em;padding:11px 14px;border-bottom:1px solid var(--border);white-space:nowrap}table.tbl td{padding:12px 14px;border-bottom:1px solid var(--border);vertical-align:middle}table.tbl tr:last-child td{border-bottom:none}table.tbl tbody tr:hover{background:var(--surface-2)}table.tbl td.num,table.tbl th.num{text-align:right;font-variant-numeric:tabular-nums}.clickable{cursor:pointer}.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:999px;font-size:11.5px;font-weight:700;letter-spacing:.01em}.badge.draft{background:#f1f5f9;color:#475569}.badge.sent{background:#e0f2fe;color:#0369a1}.badge.paid{background:#dcfce7;color:#15803d}.badge.partial{background:#fef3c7;color:#b45309}.badge.overdue{background:#fee2e2;color:#b91c1c}.badge.void{background:#f1f5f9;color:#94a3b8;text-decoration:line-through}.badge.info{background:#e0f2fe;color:#0369a1}.badge.warning{background:#fef3c7;color:#b45309}.badge.critical{background:#fee2e2;color:#b91c1c}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.field label{font-weight:600;font-size:12.5px;color:var(--text)}.field .hint{color:var(--muted);font-size:12px}input,select,textarea{font:inherit;font-size:14px;padding:10px 12px;border:1px solid var(--border);border-radius:9px;background:var(--surface);color:var(--text);width:100%}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px 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.15s}.modal{background:var(--surface);border-radius:16px;box-shadow:var(--shadow-lg);width:100%;max-width:560px;max-height:92vh;overflow:hidden;display:flex;flex-direction:column;animation:pop .15s}.modal.lg{max-width:820px}.modal-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--border)}.modal-head h3{font-size:17px}.modal-body{padding:20px;overflow-y:auto}.modal-foot{padding:14px 20px;border-top:1px solid var(--border);display:flex;gap:10px;justify-content:flex-end;background:var(--surface-2)}@keyframes fade{0%{opacity:0}}@keyframes pop{0%{opacity:0;transform:translateY(8px) scale(.98)}}.toasts{position:fixed;bottom:20px;right:20px;z-index:200;display:flex;flex-direction:column;gap:10px}.toast{background:var(--sidebar);color:#fff;padding:12px 16px;border-radius:10px;box-shadow:var(--shadow-lg);font-weight:500;font-size:13.5px;min-width:240px;display:flex;gap:10px;align-items:center;animation:pop .15s}.toast.success{background:#065f46}.toast.error{background:#991b1b}.muted{color:var(--muted)}.empty{text-align:center;padding:48px 20px;color:var(--muted)}.empty .big{font-size:40px;opacity:.4;margin-bottom:8px;display:flex;justify-content:center}.spin{animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;gap:12px;flex-wrap:wrap}.page-head p{margin:4px 0 0;color:var(--muted)}.pill-tabs{display:inline-flex;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:3px;gap:3px}.pill-tabs button{border:none;background:transparent;padding:7px 14px;border-radius:8px;font-weight:600;font-size:13px;cursor:pointer;color:var(--muted)}.pill-tabs button.active{background:var(--surface);color:var(--text);box-shadow:var(--shadow)}.divider{height:1px;background:var(--border);margin:16px 0}.kv{display:flex;justify-content:space-between;padding:7px 0;border-bottom:1px solid var(--border)}.kv:last-child{border-bottom:none}.kv .k{color:var(--muted)}.tag-link{cursor:pointer;color:var(--primary-dark);font-weight:600}.center-screen{min-height:100%;display:grid;place-items:center;padding:20px}.sigpad{border:2px dashed var(--border);border-radius:10px;background:var(--surface-2);touch-action:none;width:100%;height:160px;display:block}.login-wrap{min-height:100%;display:grid;place-items:center;background:radial-gradient(1200px 600px at 20% -10%,#12233f,var(--sidebar));padding:20px}.login-card{background:var(--surface);border-radius:18px;box-shadow:var(--shadow-lg);width:100%;max-width:400px;padding:32px}.login-card .brand{color:var(--text);padding:0 0 20px}.login-card .brand span b{color:var(--primary)}@media(max-width:900px){.grid.cols-4,.grid.cols-3{grid-template-columns:repeat(2,1fr)}}@media(max-width:720px){.sidebar{transform:translate(-100%);transition:transform .2s;width:260px}.sidebar.open{transform:translate(0);box-shadow:var(--shadow-lg)}.main{margin-left:0;padding-bottom:66px}.hamburger{display:inline-flex}.content{padding:16px}.topbar{padding:0 16px}.grid.cols-2,.grid.cols-3,.grid.cols-4,.form-grid{grid-template-columns:1fr}.backdrop-mobile{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;z-index:40}.mobile-nav{display:flex;position:fixed;bottom:0;left:0;right:0;height:62px;background:var(--surface);border-top:1px solid var(--border);z-index:45;padding-bottom:env(safe-area-inset-bottom)}.mobile-nav a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--muted);font-size:10.5px;font-weight:600}.mobile-nav a .ic{display:inline-flex;align-items:center;justify-content:center;height:20px}.mobile-nav a.active{color:var(--primary-dark)}}