:root{--bg:#061827;--panel:#0b2236;--line:rgba(255,255,255,.12);--text:#f7fbff;--muted:#9fb4c8;--blue:#0b8fff;--green:#89d72d;--shadow:0 18px 50px rgba(0,0,0,.28)}
*{box-sizing:border-box}html,body,#app{margin:0;min-height:100%;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:radial-gradient(circle at 10% 0%,#0b3d68 0,#061827 38%,#020712 100%);color:var(--text)}button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.hide{display:none!important}
.topbar{position:sticky;top:0;z-index:50;background:rgba(3,12,24,.9);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.topbar-inner{max-width:1440px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 18px}
.brand{display:flex;align-items:center;gap:12px;min-width:220px}.logo-mark{position:relative;width:46px;height:58px;flex:0 0 auto}.logo-mark .flame1{position:absolute;left:0;top:0;width:25px;height:58px;background:linear-gradient(160deg,#47d1ff,#0468e7);border-radius:80% 20% 80% 20%;transform:rotate(12deg)}.logo-mark .flame2{position:absolute;left:20px;top:20px;width:17px;height:34px;background:linear-gradient(160deg,#71deff,#0a66d7);border-radius:80% 30% 80% 20%;transform:rotate(12deg)}.logo-mark .flame3{position:absolute;left:27px;top:18px;width:19px;height:40px;background:linear-gradient(160deg,#c8ff37,#37a943);border-radius:80% 30% 80% 20%;transform:rotate(-8deg)}.logo-mark .dletter{position:absolute;left:9px;bottom:5px;width:31px;height:31px;background:#fff;color:#061827;display:flex;align-items:center;justify-content:center;font-weight:950;font-size:22px;border-radius:4px;box-shadow:0 4px 18px rgba(0,0,0,.25)}
.brand-name{font-weight:900;letter-spacing:.34em;font-size:18px;line-height:1}.brand-sub{margin-top:5px;color:#33bfff;font-size:10px;letter-spacing:.38em;text-transform:uppercase;display:flex;align-items:center;gap:8px}.brand-sub:before,.brand-sub:after{content:"";height:1px;width:28px;background:#218fd8}
.nav{display:flex;gap:6px;align-items:center;background:rgba(255,255,255,.05);padding:5px;border-radius:999px;overflow:auto}.nav button{border:0;background:transparent;color:#c6d7e8;padding:10px 13px;border-radius:999px;display:flex;align-items:center;gap:7px;white-space:nowrap}.nav button.active{background:#fff;color:#061827;font-weight:800}.userbar{display:flex;align-items:center;gap:8px;color:#c6d7e8;font-size:14px}.userbar button,.ghost-btn{border:1px solid var(--line);background:rgba(255,255,255,.06);color:#fff;border-radius:14px;padding:10px 12px}
.main{max-width:1440px;margin:auto;padding:22px 18px 110px}.hero{display:flex;align-items:center;justify-content:space-between;gap:16px;border:1px solid var(--line);background:rgba(255,255,255,.05);box-shadow:var(--shadow);border-radius:26px;padding:20px;margin-bottom:18px}.hero h1{margin:0;font-size:28px}.hero p{margin:8px 0 0;color:var(--muted)}
.card{border:1px solid var(--line);background:rgba(255,255,255,.055);border-radius:24px;box-shadow:var(--shadow);padding:18px}.grid{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.stat{display:flex;justify-content:space-between;gap:14px;min-height:132px}.stat small{color:var(--muted)}.stat strong{display:block;margin-top:8px;font-size:31px}.iconbox{width:48px;height:48px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(145deg,rgba(11,143,255,.25),rgba(137,215,45,.12));border:1px solid rgba(79,198,255,.28)}
.section-title{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:14px}.section-title h2{margin:0;font-size:20px}.section-title span{color:var(--muted);font-size:13px}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:18px}table{width:100%;border-collapse:collapse;min-width:760px}th,td{padding:12px;border-bottom:1px solid rgba(255,255,255,.08);text-align:left;vertical-align:middle}th{background:rgba(255,255,255,.06);color:#cfe0ef;font-size:13px}td{color:#eaf3fb}
.badge{display:inline-flex;align-items:center;border-radius:999px;padding:5px 9px;font-size:12px;font-weight:800}.b-sky{background:#dff4ff;color:#0369a1}.b-green{background:#dcfce7;color:#047857}.b-amber{background:#fef3c7;color:#a16207}.b-red{background:#fee2e2;color:#b91c1c}.b-dark{background:#e5e7eb;color:#111827}
.gas{display:inline-block;min-width:38px;text-align:center;border-radius:999px;padding:4px 8px;font-size:12px;font-weight:900;color:white}.gas-O2{background:#1479c9}.gas-CO2{background:#111827}.gas-N2{background:#059669}.gas-Ar{background:#777}.gas-He{background:#92400e}
.form{display:grid;gap:12px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}label{display:block;color:#cfe0ef;font-size:13px;margin-bottom:6px}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.09);color:#fff;padding:12px 13px;outline:none}input:focus,select:focus,textarea:focus{border-color:#36bfff;box-shadow:0 0 0 3px rgba(54,191,255,.18)}option{background:#0b2236;color:#fff}
.primary{border:0;background:linear-gradient(135deg,var(--blue),#0665d8);color:#fff;border-radius:15px;padding:12px 15px;font-weight:900}.success{border:0;background:linear-gradient(135deg,#10b981,#15803d);color:#fff;border-radius:15px;padding:12px 15px;font-weight:900}.warn{border:0;background:linear-gradient(135deg,#f59e0b,#c2410c);color:#fff;border-radius:15px;padding:12px 15px;font-weight:900}.danger{border:0;background:linear-gradient(135deg,#ef4444,#991b1b);color:#fff;border-radius:15px;padding:12px 15px;font-weight:900}.actions{display:flex;gap:8px;flex-wrap:wrap}
.kpi-white{background:white;color:#061827;border-radius:18px;padding:16px}.kpi-white b{font-size:24px;display:block}.progress{height:18px;border-radius:999px;background:rgba(255,255,255,.1);overflow:hidden}.progress div{height:100%;background:linear-gradient(90deg,#0b8fff,#89d72d);border-radius:999px}.login{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{max-width:520px;width:100%;border:1px solid var(--line);background:rgba(3,12,24,.78);box-shadow:var(--shadow);border-radius:32px;padding:28px}.login-card .brand{justify-content:center;margin-bottom:20px}.login-card h1{text-align:center;margin:0 0 8px}.login-card p{text-align:center;color:var(--muted);margin:0 0 22px}.toast{position:fixed;right:18px;bottom:18px;background:#fff;color:#061827;border-radius:18px;padding:14px 16px;box-shadow:var(--shadow);font-weight:800;z-index:1000}.mobile-actions{display:none;position:fixed;left:12px;right:12px;bottom:12px;background:rgba(3,12,24,.95);border:1px solid var(--line);border-radius:24px;padding:10px;z-index:60;box-shadow:var(--shadow)}.mobile-actions button{flex:1;border:0;border-radius:18px;background:rgba(255,255,255,.08);color:#fff;padding:12px 6px;font-weight:800}.mobile-actions button:first-child{background:#0b8fff}.qrbox{border:1px dashed rgba(80,200,255,.35);border-radius:24px;min-height:220px;display:grid;place-items:center;background:rgba(0,0,0,.18);text-align:center;color:var(--muted)}.cylinder-card{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:18px;padding:12px;background:rgba(255,255,255,.045)}.tank{display:grid;gap:14px}.audit{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px;color:#cfe0ef;background:rgba(0,0,0,.25);padding:12px;border-radius:16px;max-height:260px;overflow:auto;white-space:pre-wrap}
@media (max-width:1050px){.nav{position:fixed;left:0;right:0;bottom:0;border-radius:0;z-index:65;padding:8px;justify-content:flex-start}.nav button{font-size:12px;padding:10px 12px}.main{padding-bottom:92px}.userbar{display:none}.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:760px){.topbar-inner{align-items:flex-start}.brand{min-width:0}.brand-name{font-size:15px}.brand-sub{display:none}.hero{display:block}.hero h1{font-size:23px}.grid-2,.grid-3,.grid-4,.form-grid{grid-template-columns:1fr}.section-title{display:block}.mobile-actions{display:flex}.main{padding:14px 12px 120px}.card{padding:14px}.logo-mark{width:39px;height:50px}.logo-mark .flame1{height:50px}.logo-mark .dletter{width:26px;height:26px;font-size:19px}}
@media print{.topbar,.nav,.actions,.mobile-actions,.hero{display:none!important}body{background:#fff;color:#000}.card{box-shadow:none;border:1px solid #ccc;background:#fff;color:#000}.main{padding:0}th{background:#eee;color:#000}td{color:#000}}

.doc-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:16px}.doc-preview{background:#fff;color:#111827;border-radius:18px;padding:22px}.doc-preview h2{margin:0 0 8px}.doc-preview table{min-width:0;color:#111827}.doc-preview th,.doc-preview td{color:#111827;border-bottom:1px solid #e5e7eb}.sig-canvas{width:100%;height:180px;background:#fff;border:2px dashed #b9c6d3;border-radius:18px;touch-action:none}.pillrow{display:flex;gap:8px;flex-wrap:wrap}.mini-btn{border:1px solid var(--line);background:rgba(255,255,255,.08);color:#fff;border-radius:12px;padding:8px 10px;font-weight:800;font-size:12px}.danger-outline{border:1px solid rgba(239,68,68,.4);background:rgba(239,68,68,.1);color:#fecaca;border-radius:12px;padding:8px 10px;font-weight:800;font-size:12px}.info-box{border:1px solid rgba(56,189,248,.25);background:rgba(56,189,248,.08);color:#dff7ff;border-radius:18px;padding:14px}.print-only{display:none}@media(max-width:900px){.doc-grid{grid-template-columns:1fr}.doc-preview{overflow:auto}}@media print{.doc-preview{box-shadow:none;border:0}.no-print{display:none!important}.print-only{display:block}.doc-preview *{color:#111!important}}