:root{
  --bg:#f6f8fc; --card:#fff; --text:#0f172a; --muted:#64748b; --line:#e5e7eb;
  --primary:#2563eb; --primary2:#1d4ed8; --shadow:0 10px 30px rgba(2,6,23,.06);
  --radius:16px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Noto Sans TC","Microsoft JhengHei",sans-serif;background:var(--bg);color:var(--text)}
a{color:inherit}
.container{display:flex;min-height:100vh;position:relative}
.sidebar{width:260px;background:#fff;border-right:1px solid var(--line);padding:18px 14px;position:fixed;left:-280px;top:0;height:100vh;overflow:auto;z-index:60;transition:left .22s ease;box-shadow:var(--shadow)}
.sidebar.open{left:0}
.sidebar-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.2);z-index:55;display:none}
.sidebar-backdrop.show{display:block}
.brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.brand .dot{width:10px;height:10px;border-radius:999px;background:var(--primary)}
.brand .title{font-weight:800}
.brand .sub{font-size:12px;color:var(--muted)}
.nowtime{font-size:12px;color:var(--muted);margin-top:6px}
.navsec{margin-top:16px}
.navsec .hd{font-size:12px;color:var(--muted);margin:10px 8px}
.nav a{display:flex;align-items:center;gap:10px;padding:10px 10px;border-radius:12px;text-decoration:none;color:var(--text)}
.nav a:hover{background:#f1f5ff}
.nav a.active{background:#eaf0ff;border:1px solid #dbe7ff}
.icon{width:18px;height:18px;display:inline-flex;align-items:center;justify-content:center}
.content{flex:1;padding:22px 26px 56px;min-width:0;width:100%}
.topbar{display:flex;align-items:center;justify-content:flex-end;gap:10px;margin-bottom:16px}
.pill{display:inline-flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 12px}
.avatar{width:34px;height:34px;border-radius:999px;background:#eef2ff;display:flex;align-items:center;justify-content:center;font-weight:800;color:#1e40af}
.btn{border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 14px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}
.btn:hover{border-color:#cbd5e1}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn.primary:hover{background:var(--primary2);border-color:var(--primary2)}
.btn.danger{background:#ef4444;border-color:#ef4444;color:#fff}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}
.h1{font-size:26px;margin:0 0 10px 0}
.h2{font-size:16px;font-weight:800;margin:0}
.muted{color:var(--muted)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
.input,.cell-edit{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:14px}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px;max-width:100%}
table{width:100%;border-collapse:collapse;min-width:1200px;background:#fff}
th,td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;font-size:14px;white-space:nowrap}
th{background:#f8fafc;font-weight:800}
tfoot th{background:#fff}
.badge{display:inline-flex;padding:2px 8px;border-radius:999px;border:1px solid var(--line);font-size:12px;color:var(--muted)}
.footer{margin-top:14px;color:var(--muted);font-size:12px}
.menuBtn{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;margin-right:auto;font-size:20px;font-weight:700}
.seg-wrap{display:flex;gap:10px;flex-wrap:wrap}
.seg-btn{border:1px solid var(--line);background:linear-gradient(180deg,#ffffff 0%,#f3f5f9 100%);color:var(--text);border-radius:14px;padding:10px 16px;cursor:pointer;box-shadow:inset 0 1px 0 rgba(255,255,255,.9), 0 1px 2px rgba(15,23,42,.06);font-weight:700}
.seg-btn:hover{border-color:#d6deea;background:linear-gradient(180deg,#ffffff 0%,#eef3fa 100%)}
.seg-btn.active{background:linear-gradient(180deg,#3b82f6 0%,#2563eb 100%);border-color:#2563eb;color:#fff;box-shadow:inset 0 1px 0 rgba(255,255,255,.18), 0 8px 18px rgba(37,99,235,.22)}
.seg-btn:active{transform:translateY(1px)}
.sm{max-width:100px}
.login-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:18px}
.login-grid{width:min(980px,100%);display:grid;grid-template-columns:1.2fr .9fr;gap:16px}
.login-card{min-width:0}

/* desktop nav redesign */
.desktop-shell{display:none}
.page-footer-fixed{text-align:center;color:var(--muted);font-size:12px;padding:16px 0 8px}

/* oil/electric top bar styles */
.list-top-bar{display:flex !important;align-items:center !important;gap:16px !important;flex-wrap:nowrap !important;white-space:nowrap !important;overflow-x:auto !important;overflow-y:hidden !important;margin-bottom:12px !important}
.list-top-bar > *{flex:0 0 auto !important}
.list-title{font-size:18px !important;font-weight:800 !important;color:#0f172a !important;white-space:nowrap !important}
.month-switch{display:inline-flex !important;align-items:center !important;gap:10px !important;white-space:nowrap !important;flex:0 0 auto !important}
.month-num{min-width:28px !important;text-align:center !important;font-size:20px !important;font-weight:900 !important;line-height:1 !important;color:#1e3a8a !important}
.month-nav-btn{appearance:none !important;-webkit-appearance:none !important;display:inline-flex !important;align-items:center !important;justify-content:center !important;min-width:42px !important;height:40px !important;padding:0 12px !important;margin:0 !important;border-radius:10px !important;border:1px solid #cfd8e3 !important;background:linear-gradient(180deg,#ffffff 0%,#eaf0f6 100%) !important;color:#0f172a !important;font-size:16px !important;font-weight:900 !important;line-height:1 !important;cursor:pointer !important;text-decoration:none !important;box-shadow:inset 0 1px 0 rgba(255,255,255,.98) !important,0 2px 0 #d8e0e8 !important,0 4px 10px rgba(15,23,42,.08) !important;transition:transform .08s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease, color .15s ease !important}
.month-nav-btn:hover{border-color:#bcc8d8 !important;background:linear-gradient(180deg,#ffffff 0%,#e5edf7 100%) !important;box-shadow:inset 0 1px 0 rgba(255,255,255,.98) !important,0 2px 0 #d8e0e8 !important,0 6px 14px rgba(15,23,42,.10) !important}
.month-nav-btn:active{transform:translateY(2px) !important;background:linear-gradient(180deg,#e8eef5 0%,#dde6f0 100%) !important;box-shadow:inset 0 3px 7px rgba(15,23,42,.16) !important,0 1px 0 #d8e0e8 !important}
.stat-inline{display:flex !important;align-items:center !important;gap:18px !important;flex-wrap:nowrap !important;white-space:nowrap !important}
.stat-inline span{white-space:nowrap !important}
.stat-inline b{color:#ef4444 !important;font-size:16px !important;font-weight:900 !important;margin-left:4px !important}

/* electric area buttons */
.electric-area-btn-wrap{display:flex;flex-direction:column;gap:12px;margin-top:8px}
.electric-area-group{display:flex;flex-wrap:wrap;gap:10px}
.electric-area-btn{appearance:none;-webkit-appearance:none;display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:10px 18px;border-radius:16px;border:1px solid #ccd6e3;background:linear-gradient(180deg,#ffffff 0%,#eef3f8 100%);color:#0f172a;cursor:pointer;font-size:14px;font-weight:800;line-height:1.2;white-space:nowrap;text-shadow:0 1px 0 rgba(255,255,255,.92);box-shadow:inset 0 1px 0 rgba(255,255,255,.98),0 1px 0 #d7e0ea,0 3px 8px rgba(15,23,42,.08);transition:transform .08s ease,box-shadow .14s ease,border-color .14s ease,background .14s ease,color .14s ease}
.electric-area-btn:hover{border-color:#bec9d8;background:linear-gradient(180deg,#ffffff 0%,#e8f0fa 100%);box-shadow:inset 0 1px 0 rgba(255,255,255,.98),0 1px 0 #d7e0ea,0 5px 12px rgba(15,23,42,.10)}
.electric-area-btn:active{transform:translateY(2px);background:linear-gradient(180deg,#e9eef4 0%,#dde5ee 100%);box-shadow:inset 0 3px 7px rgba(15,23,42,.16),0 1px 0 #d7e0ea}
.electric-area-btn.active,.electric-area-btn[aria-pressed="true"]{border-color:#2563eb;background:linear-gradient(180deg,#4f90ff 0%,#2563eb 100%);color:#ffffff;text-shadow:0 1px 0 rgba(0,0,0,.14);box-shadow:inset 0 3px 8px rgba(0,0,0,.18),0 2px 0 rgba(37,99,235,.24),0 8px 18px rgba(37,99,235,.24);transform:translateY(1px)}
.electric-area-btn.active:hover,.electric-area-btn[aria-pressed="true"]:hover{border-color:#1d4ed8;background:linear-gradient(180deg,#5b98ff 0%,#1d4ed8 100%)}
.electric-area-btn.active:active,.electric-area-btn[aria-pressed="true"]:active{transform:translateY(2px);box-shadow:inset 0 4px 10px rgba(0,0,0,.22),0 2px 8px rgba(37,99,235,.16)}
.electric-area-btn:focus-visible{outline:2px solid rgba(37,99,235,.22);outline-offset:2px}
.electric-area-btn:disabled{opacity:.58;cursor:not-allowed;transform:none}

/* oil page */
.oil-block{display:flex !important;flex-direction:column !important;gap:8px !important}
.oil-type-btns{display:flex !important;flex-wrap:wrap !important;gap:10px !important;margin-bottom:0 !important}
body #oil_name.input.oil-select{display:block !important;width:100% !important;min-height:42px !important;opacity:1 !important;visibility:visible !important;position:static !important;z-index:auto !important;border:1px solid #cfd8e3 !important;background:#fff !important;border-radius:10px !important}
.oil-btn{appearance:none !important;-webkit-appearance:none !important;border:1px solid #cfd8e3 !important;background:linear-gradient(180deg,#ffffff 0%,#eaf0f6 100%) !important;color:#0f172a !important;border-radius:14px !important;padding:10px 16px !important;min-height:44px !important;cursor:pointer !important;font-size:14px !important;font-weight:800 !important;line-height:1.2 !important;box-shadow:inset 0 1px 0 rgba(255,255,255,.98) !important,0 2px 0 #d8e0e8 !important,0 4px 10px rgba(15,23,42,.08) !important;transition:transform .08s ease,box-shadow .15s ease,background .15s ease,border-color .15s ease,color .15s ease !important}
.oil-btn:hover{border-color:#bcc8d8 !important;background:linear-gradient(180deg,#ffffff 0%,#e5edf7 100%) !important;box-shadow:inset 0 1px 0 rgba(255,255,255,.98) !important,0 2px 0 #d8e0e8 !important,0 6px 14px rgba(15,23,42,.10) !important}
.oil-btn:active{transform:translateY(2px) !important;background:linear-gradient(180deg,#e8eef5 0%,#dde6f0 100%) !important;box-shadow:inset 0 3px 7px rgba(15,23,42,.16) !important,0 1px 0 #d8e0e8 !important}
.oil-btn.active{color:#ffffff !important;border-color:#2563eb !important;background:linear-gradient(180deg,#4e8fff 0%,#2563eb 100%) !important;box-shadow:inset 0 3px 8px rgba(0,0,0,.18) !important,0 2px 0 rgba(37,99,235,.22) !important,0 8px 18px rgba(37,99,235,.26) !important;transform:translateY(1px) !important}
.oil-btn.active:hover{border-color:#1d4ed8 !important;background:linear-gradient(180deg,#5a97ff 0%,#1d4ed8 100%) !important}
.oil-btn.active:active{transform:translateY(2px) !important;box-shadow:inset 0 4px 10px rgba(0,0,0,.22) !important,0 2px 8px rgba(37,99,235,.18) !important}
.oil-area-select#area{display:block !important;width:100% !important}

/* desktop enterprise nav */
@media (min-width: 981px){
  .sidebar{display:none !important}
  .desktop-shell{display:block !important;margin-bottom:18px !important}
  .desktop-header-row{display:flex !important;align-items:flex-start !important;justify-content:space-between !important;gap:18px !important;margin-bottom:14px !important}
  .desktop-brand-card{background:#fff !important;border:1px solid var(--line) !important;border-radius:18px !important;box-shadow:var(--shadow) !important;padding:14px 16px !important;min-width:190px !important}
  .desktop-brand-main{font-size:18px !important;font-weight:900 !important;line-height:1.2 !important;color:#0f172a !important}
  .desktop-brand-sub{margin-top:4px !important;font-size:12px !important;color:var(--muted) !important;font-weight:700 !important}
  .desktop-brand-time{margin-top:6px !important;font-size:12px !important;color:var(--muted) !important}
  .desktop-user-actions{display:flex !important;align-items:center !important;gap:10px !important;margin-left:auto !important}
  .desktop-nav-row{display:flex !important;align-items:center !important;gap:10px !important;flex-wrap:wrap !important;margin:0 0 12px 0 !important}
  .desk-nav-btn{display:inline-flex !important;align-items:center !important;justify-content:center !important;gap:8px !important;min-height:46px !important;padding:0 16px !important;border-radius:14px !important;border:1px solid #d7dfeb !important;background:linear-gradient(180deg,#ffffff 0%,#eef3f8 100%) !important;box-shadow:inset 0 1px 0 rgba(255,255,255,.98) !important,0 2px 0 #d8e0e8 !important,0 4px 10px rgba(15,23,42,.08) !important;color:#0f172a !important;text-decoration:none !important;font-weight:800 !important;line-height:1 !important;white-space:nowrap !important;transition:transform .08s ease,box-shadow .15s ease,background .15s ease,border-color .15s ease,color .15s ease !important}
  .desk-nav-btn:hover{border-color:#bec9d8 !important;background:linear-gradient(180deg,#ffffff 0%,#e8f0fa 100%) !important;box-shadow:inset 0 1px 0 rgba(255,255,255,.98) !important,0 2px 0 #d8e0e8 !important,0 6px 14px rgba(15,23,42,.10) !important}
  .desk-nav-btn:active{transform:translateY(2px) !important;box-shadow:inset 0 3px 7px rgba(15,23,42,.16) !important,0 1px 0 #d8e0e8 !important}
  .desk-nav-btn.active{border-color:#2563eb !important;background:linear-gradient(180deg,#4f90ff 0%,#2563eb 100%) !important;color:#fff !important;box-shadow:inset 0 3px 8px rgba(0,0,0,.18) !important,0 2px 0 rgba(37,99,235,.22) !important,0 8px 18px rgba(37,99,235,.24) !important}
  .desk-nav-btn .icon{width:18px !important;height:18px !important;display:inline-flex !important;align-items:center !important;justify-content:center !important;flex:0 0 18px !important}
  .mobile-only-topbar{display:none !important}
  .page-footer-fixed{position:fixed;left:0;right:0;bottom:8px;z-index:20;pointer-events:none}
}

@media (max-width: 980px){
  .content{padding:16px}
  .topbar{justify-content:space-between}
  .row,.row3{grid-template-columns:1fr}
  table{min-width:1100px}
  #area{display:block}
  .electric-area-btn-wrap{display:none !important}
  .desktop-shell{display:none !important}
  .mobile-only-topbar{display:flex !important}
  .list-top-bar{align-items:flex-start !important;flex-wrap:wrap !important;white-space:normal !important}
  .stat-inline{flex-wrap:wrap !important;white-space:normal !important}
}

@media (max-width: 768px){
  .login-shell{align-items:flex-start;padding:18px}
  .login-grid{grid-template-columns:1fr;max-width:420px}
  .login-info{order:1}
  .login-form{order:2}
}