:root {
      --bg:#0e1117;--surface:#161b24;--surface2:#1d2535;--border:#2a3347;
      --accent:#e8a020;--text:#e8eaf0;--text2:#8892a4;--text3:#555f73;
      --overdue:#c0392b;--warning:#e67e22;--ok:#27ae60;--accent4:#2980b9;
      --font-head:'Barlow Condensed',sans-serif;--font-body:'Barlow',sans-serif;
    }
    [data-theme="light"] {
      --bg:#f4f5f7;--surface:#ffffff;--surface2:#eaecf0;--border:#d0d5dd;
      --accent:#c47f0a;--text:#1a1f2e;--text2:#4a5568;--text3:#8a96a8;
      --overdue:#c0392b;--warning:#d4650a;--ok:#1e8449;--accent4:#1a6fa8;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    body{background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:14px;min-height:100vh}
    .topbar{background:var(--surface);border-bottom:2px solid var(--accent);padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:56px;position:sticky;top:0;z-index:100}
    .topbar-left{display:flex;align-items:center;gap:16px}
    .logo{font-family:var(--font-head);font-size:22px;font-weight:800;color:var(--accent);text-transform:uppercase}
    .logo span{color:var(--text2);font-weight:400}
    .last-updated{font-size:11px;color:var(--text3)}
    .refresh-btn{background:none;border:1px solid var(--border);color:var(--text2);padding:6px 14px;border-radius:4px;cursor:pointer;font-size:12px;font-family:var(--font-body);display:flex;align-items:center;gap:6px;transition:all .15s}
    .refresh-btn:hover{border-color:var(--accent);color:var(--accent)}
    .refresh-btn.spinning svg{animation:spin .8s linear infinite}
    .refresh-btn.accent-btn{background:var(--accent);color:#000;border-color:var(--accent);font-weight:600}
    .refresh-btn.accent-btn:hover{opacity:.85}
    @keyframes spin{to{transform:rotate(360deg)}}
    .container{max-width:1400px;margin:0 auto;padding:24px}
    .cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:28px}
    .card{background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:20px;position:relative;overflow:hidden;transition:transform .15s;cursor:pointer}
    .card:hover{transform:translateY(-2px)}
    .card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px}
    .card.overdue::before{background:var(--overdue)}.card.warning::before{background:var(--warning)}
    .card.upcoming::before{background:var(--accent4)}.card.complete::before{background:var(--ok)}
    .card-label{font-family:var(--font-head);font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--text3);margin-bottom:10px}
    .card-value{font-family:var(--font-head);font-size:48px;font-weight:800;line-height:1;margin-bottom:6px}
    .card.overdue .card-value{color:var(--overdue)}.card.warning .card-value{color:var(--warning)}
    .card.upcoming .card-value{color:var(--accent4)}.card.complete .card-value{color:var(--ok)}
    .card-sub{font-size:12px;color:var(--text3)}
    .filters{background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:16px 20px;margin-bottom:20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
    .filter-label{font-family:var(--font-head);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--text3)}
    .filter-select{background:var(--surface2);border:1px solid var(--border);color:var(--text);padding:7px 12px;border-radius:4px;font-size:13px;cursor:pointer;outline:none}
    .filter-select:focus{border-color:var(--accent)}
    .search-input{background:var(--surface2);border:1px solid var(--border);color:var(--text);padding:7px 12px;border-radius:4px;font-size:13px;outline:none;flex:1;min-width:200px}
    .search-input:focus{border-color:var(--accent)}.search-input::placeholder{color:var(--text3)}
    .nav-tabs{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:16px;border-bottom:1px solid var(--border)}
    .nav-tab{font-family:var(--font-head);font-size:12px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;padding:8px 12px;cursor:pointer;color:var(--text3);border-bottom:2px solid transparent;margin-bottom:-1px;transition:all .15s;display:flex;align-items:center;gap:6px;white-space:nowrap}
    .nav-tab:hover{color:var(--text)}.nav-tab.active{color:var(--accent);border-bottom-color:var(--accent)}
    .nav-tab-count{background:var(--surface2);border-radius:10px;padding:1px 7px;font-size:11px;font-weight:700}
    .nav-tab.active .nav-tab-count{background:var(--accent);color:#000}
    .table-wrap{background:var(--surface);border:1px solid var(--border);border-radius:6px;overflow:hidden}
    table{width:100%;border-collapse:collapse}
    thead tr{background:var(--surface2);border-bottom:1px solid var(--border)}
    th{font-family:var(--font-head);font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--text3);padding:12px 16px;text-align:left;cursor:pointer;white-space:nowrap;user-select:none}
    th:hover{color:var(--text)}th .sort-icon{opacity:.4;margin-left:4px}th.sorted .sort-icon{opacity:1;color:var(--accent)}
    tbody tr{border-bottom:1px solid var(--border);transition:background .1s;cursor:pointer}
    tbody tr:last-child{border-bottom:none}tbody tr:hover{background:var(--surface2)}
    td{padding:12px 16px;vertical-align:middle}
    .td-equipment{min-width:160px}.equip-name{font-weight:600;color:var(--text);margin-bottom:2px}
    .equip-vessel{font-size:11px;color:var(--text3)}.td-task{max-width:280px}
    .task-text{color:var(--text2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .area-badge{display:inline-block;padding:2px 8px;border-radius:3px;font-family:var(--font-head);font-size:11px;font-weight:700;background:var(--surface2);color:var(--text2);border:1px solid var(--border)}
    .days-badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:3px;font-family:var(--font-head);font-size:12px;font-weight:700;white-space:nowrap}
    .days-badge.overdue{background:rgba(192,57,43,.15);color:#e74c3c;border:1px solid rgba(192,57,43,.3)}
    .days-badge.due-soon{background:rgba(230,126,34,.15);color:#e67e22;border:1px solid rgba(230,126,34,.3)}
    .days-badge.upcoming{background:rgba(41,128,185,.15);color:#3498db;border:1px solid rgba(41,128,185,.3)}
    .days-badge.no-date{background:var(--surface2);color:var(--text3);border:1px solid var(--border)}
    .food-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--ok);margin-left:6px;vertical-align:middle}
    .responsible-chip{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text2)}
    .resp-avatar{width:24px;height:24px;border-radius:50%;background:var(--accent);color:#000;display:inline-flex;align-items:center;justify-content:center;font-family:var(--font-head);font-size:10px;font-weight:800;flex-shrink:0}
    .state-box{padding:60px 20px;text-align:center;color:var(--text3)}
    .state-box .icon{font-size:36px;margin-bottom:12px}.state-box p{font-size:14px}
    .loader{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite;margin:0 auto 16px}
    .modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.7);z-index:200;display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;pointer-events:none;transition:opacity .2s}
    .modal-overlay.open{opacity:1;pointer-events:all}
    .modal{background:var(--surface);border:1px solid var(--border);border-top:3px solid var(--accent);border-radius:6px;width:100%;max-width:680px;max-height:90vh;overflow-y:auto;transform:translateY(16px);transition:transform .2s}
    .modal-overlay.open .modal{transform:translateY(0)}
    .modal-header{padding:20px 24px 16px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:flex-start}
    .modal-title{font-family:var(--font-head);font-size:22px;font-weight:700;color:var(--text)}
    .modal-close{background:none;border:none;color:var(--text3);font-size:20px;cursor:pointer;line-height:1;padding:4px}
    .modal-close:hover{color:var(--text)}.modal-body{padding:20px 24px}
    .detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:20px}
    .detail-field label{font-family:var(--font-head);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--text3);display:block;margin-bottom:4px}
    .detail-field value{font-size:14px;color:var(--text);display:block}
    .detail-field input,.detail-field select,.detail-field textarea{background:var(--surface2);border:1px solid var(--border);color:var(--text);padding:7px 10px;border-radius:4px;font-size:13px;font-family:var(--font-body);width:100%;outline:none;transition:border-color .15s}
    .detail-field input:focus,.detail-field select:focus,.detail-field textarea:focus{border-color:var(--accent)}
    .detail-field textarea{resize:vertical;min-height:60px}
    .detail-task{background:var(--surface2);border-left:3px solid var(--accent);padding:14px 16px;border-radius:0 4px 4px 0;color:var(--text2);line-height:1.6;margin-bottom:16px}
    .modal-footer{padding:16px 24px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;gap:12px}
    .save-btn{background:var(--accent);color:#000;border:none;padding:10px 28px;border-radius:4px;font-family:var(--font-head);font-size:14px;font-weight:700;text-transform:uppercase;cursor:pointer;transition:opacity .15s}
    .save-btn:hover{opacity:.85}.save-btn:disabled{opacity:.4;cursor:not-allowed}
    .save-status{font-size:12px;color:var(--text3)}
    .save-status.ok{color:var(--ok)}.save-status.err{color:#e74c3c}
    .error-banner{background:rgba(192,57,43,.1);border:1px solid rgba(192,57,43,.3);color:#e74c3c;padding:12px 16px;border-radius:6px;margin-bottom:20px;font-size:13px;display:none}
    .info-banner{background:rgba(41,128,185,.1);border:1px solid rgba(41,128,185,.3);color:#3498db;padding:12px 16px;border-radius:6px;margin-bottom:20px;font-size:13px;display:none}
    .auth-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;gap:20px;padding:20px}
    .auth-card{background:var(--surface);border:1px solid var(--border);border-top:3px solid var(--accent);border-radius:6px;padding:40px;max-width:400px;width:100%;text-align:center}
    .auth-logo{font-family:var(--font-head);font-size:28px;font-weight:800;color:var(--accent);text-transform:uppercase;margin-bottom:4px}
    .auth-version{font-size:10px;color:var(--text3);letter-spacing:.1em;margin-bottom:20px}
    .auth-sub{color:var(--text3);font-size:13px;margin-bottom:28px}
    .auth-btn{background:var(--accent);color:#000;border:none;padding:12px 32px;border-radius:4px;font-family:var(--font-head);font-size:16px;font-weight:700;text-transform:uppercase;cursor:pointer;width:100%;transition:opacity .15s}
    .auth-btn:hover{opacity:.85}
    .auth-error{color:#e74c3c;font-size:13px;margin-top:12px;display:none}
    .hidden{display:none!important}
    .cal-wrap{background:var(--surface);border:1px solid var(--border);border-radius:6px;overflow:hidden}
    .cal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border)}
    .cal-title{font-family:var(--font-head);font-size:20px;font-weight:700;color:var(--text)}
    .cal-controls{display:flex;align-items:center;gap:8px}
    .cal-btn{background:none;border:1px solid var(--border);color:var(--text2);padding:6px 12px;border-radius:4px;cursor:pointer;font-size:12px;font-family:var(--font-head);letter-spacing:.06em;text-transform:uppercase;transition:all .15s}
    .cal-btn:hover{border-color:var(--accent);color:var(--accent)}
    .cal-btn.active{background:var(--accent);color:#000;border-color:var(--accent)}
    .cal-nav{background:none;border:1px solid var(--border);color:var(--text2);width:32px;height:32px;border-radius:4px;cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;transition:all .15s}
    .cal-nav:hover{border-color:var(--accent);color:var(--accent)}
    .cal-legend{display:flex;gap:12px;padding:12px 20px;border-bottom:1px solid var(--border);flex-wrap:wrap}
    .cal-legend-item{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--text2)}
    .cal-legend-dot{width:10px;height:10px;border-radius:2px;flex-shrink:0}
    .cal-grid-head{display:grid;grid-template-columns:repeat(7,1fr);border-bottom:1px solid var(--border)}
    .cal-day-name{font-family:var(--font-head);font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--text3);padding:10px 0;text-align:center}
    .cal-grid{display:grid;grid-template-columns:repeat(7,1fr)}
    .cal-cell{min-height:90px;border-right:1px solid var(--border);border-bottom:1px solid var(--border);padding:6px;position:relative}
    .cal-cell:nth-child(7n){border-right:none}
    .cal-cell.other-month .cal-date{color:var(--text3)}
    .cal-cell.today{background:rgba(232,160,32,.05)}
    .cal-cell.today .cal-date{background:var(--accent);color:#000;border-radius:50%;width:22px;height:22px;display:flex;align-items:center;justify-content:center}
    .cal-date{font-size:12px;font-weight:600;color:var(--text2);margin-bottom:4px;width:22px;height:22px;display:flex;align-items:center;justify-content:center}
    .cal-event{font-size:10px;padding:2px 5px;border-radius:2px;margin-bottom:2px;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#fff;transition:opacity .15s}
    .cal-event:hover{opacity:.8}
    .cal-more{font-size:10px;color:var(--text3);cursor:pointer;padding:1px 4px}
    .cal-more:hover{color:var(--accent)}
    .cal-week-grid{display:grid;grid-template-columns:60px repeat(7,1fr);border-top:1px solid var(--border)}
    .cal-week-head{display:grid;grid-template-columns:60px repeat(7,1fr);border-bottom:1px solid var(--border)}
    .cal-week-day-head{font-family:var(--font-head);font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text3);padding:10px 8px;text-align:center;border-left:1px solid var(--border)}
    .cal-week-day-head:first-child{border-left:none}
    .cal-week-day-head.today-col{color:var(--accent)}
    .cal-time-col{font-size:10px;color:var(--text3);padding:4px 8px 0;text-align:right;border-right:1px solid var(--border)}
    .cal-week-cell{border-left:1px solid var(--border);border-bottom:1px solid var(--border);min-height:80px;padding:3px;position:relative}
    .cal-week-cell.today-col{background:rgba(232,160,32,.03)}
    .cal-week-event{font-size:10px;padding:2px 5px;border-radius:2px;margin-bottom:2px;cursor:pointer;color:#fff;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .cal-week-event:hover{opacity:.8}
    .cal-popup{position:fixed;background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:14px 16px;min-width:240px;max-width:300px;z-index:300;box-shadow:0 8px 32px rgba(0,0,0,.5);display:none}
    .cal-popup.open{display:block}
    .cal-popup-title{font-family:var(--font-head);font-size:15px;font-weight:700;color:var(--text);margin-bottom:4px}
    .cal-popup-sub{font-size:11px;color:var(--text3);margin-bottom:10px}
    .cal-popup-row{font-size:12px;color:var(--text2);margin-bottom:4px}
    .cal-popup-row strong{color:var(--text);font-weight:600}
    .cal-popup-close{position:absolute;top:8px;right:10px;background:none;border:none;color:var(--text3);cursor:pointer;font-size:16px}
    .cal-popup-edit{display:block;margin-top:10px;font-size:11px;color:var(--accent);cursor:pointer;text-decoration:none;font-family:var(--font-head);letter-spacing:.06em;text-transform:uppercase}
    /* Hamburger / mobile menu */
    .topbar-right{display:flex;gap:8px;align-items:center}
    .hamburger-btn{display:none;background:none;border:1px solid var(--border);border-radius:4px;width:36px;height:36px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:6px;flex-shrink:0}
    .hamburger-btn span{display:block;width:18px;height:2px;background:var(--text2);border-radius:2px;transition:all .2s}
    .hamburger-btn:hover{border-color:var(--accent)}.hamburger-btn:hover span{background:var(--accent)}
    .mobile-menu{display:none;position:absolute;top:56px;right:0;left:0;background:var(--surface);border-bottom:2px solid var(--accent);padding:12px 16px;flex-direction:column;gap:8px;z-index:99;box-shadow:0 8px 24px rgba(0,0,0,.4)}
    .mobile-menu.open{display:flex}
    @media(max-width:900px){.cards{grid-template-columns:repeat(2,1fr)}.td-task{display:none}.cal-cell{min-height:60px}.topbar-right{display:none}.hamburger-btn{display:flex}}
        .theme-toggle{background:none;border:1px solid var(--border);color:var(--text2);width:34px;height:34px;border-radius:20px;cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0}
    .theme-toggle:hover{border-color:var(--accent);color:var(--accent)}
    @media(max-width:600px){.cards{grid-template-columns:1fr 1fr}.container{padding:12px}.detail-grid{grid-template-columns:1fr}.last-updated{display:none}}
      /* TANK REGISTER */
    .tank-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;margin-top:4px}
    .tank-card{background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:14px 16px;cursor:pointer;transition:transform .12s,border-color .12s;position:relative;overflow:hidden}
    .tank-card:hover{transform:translateY(-2px);border-color:var(--accent)}
    .tank-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px}
    .tank-card.status-active::before{background:var(--ok)}.tank-card.status-cip::before{background:var(--warning)}.tank-card.status-offline::before{background:var(--overdue)}.tank-card.status-decommissioned::before,.tank-card.status-unknown::before{background:var(--border)}
    .tank-name{font-family:var(--font-head);font-size:20px;font-weight:800;color:var(--text);letter-spacing:.04em;margin-bottom:6px}
    .tank-type{font-family:var(--font-head);font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--text3);margin-bottom:8px}
    .tank-meta{display:flex;flex-direction:column;gap:3px}.tank-meta-row{font-size:12px;color:var(--text2);display:flex;justify-content:space-between;align-items:center}.tank-meta-row span{color:var(--text3);font-size:11px}
    .tank-status-badge{display:inline-block;padding:2px 8px;border-radius:3px;font-family:var(--font-head);font-size:11px;font-weight:700;margin-top:8px}
    .tank-status-badge.active{background:rgba(39,174,96,.15);color:#2ecc71;border:1px solid rgba(39,174,96,.3)}.tank-status-badge.cip{background:rgba(230,126,34,.15);color:#e67e22;border:1px solid rgba(230,126,34,.3)}.tank-status-badge.offline{background:rgba(192,57,43,.15);color:#e74c3c;border:1px solid rgba(192,57,43,.3)}.tank-status-badge.decommissioned,.tank-status-badge.unknown{background:var(--surface2);color:var(--text3);border:1px solid var(--border)}
    .tank-section-header{font-family:var(--font-head);font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--text3);padding:8px 0 6px;margin-top:16px;margin-bottom:4px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:8px}
    .tank-section-count{background:var(--surface2);border-radius:10px;padding:1px 7px;font-size:11px;color:var(--text3)}
    .tank-filters{background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:14px 18px;margin-bottom:18px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
    .tank-summary-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:20px}
    .tank-summary-card{background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:14px 18px;text-align:center}
    .ts-value{font-family:var(--font-head);font-size:36px;font-weight:800;line-height:1}.ts-label{font-family:var(--font-head);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--text3);margin-top:4px}
    .ts-active .ts-value{color:var(--ok)}.ts-cip .ts-value{color:var(--warning)}.ts-offline .ts-value{color:var(--overdue)}.ts-total .ts-value{color:var(--text2)}
    .last-maint-ok{color:var(--ok)}.last-maint-warn{color:var(--warning)}.last-maint-over{color:var(--overdue)}.last-maint-none{color:var(--text3)}
    /* ANALYTICS */
    .analytics-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:28px}
    .stat-card{background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:20px}
    .stat-label{font-family:var(--font-head);font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--text3);margin-bottom:8px}
    .stat-value{font-family:var(--font-head);font-size:42px;font-weight:800;line-height:1;color:var(--accent)}
    .stat-sub{font-size:11px;color:var(--text3);margin-top:4px}
    .analytics-section-head{font-family:var(--font-head);font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--text3);margin:24px 0 12px;padding-bottom:6px;border-bottom:1px solid var(--border)}
    .an-bar-wrap{background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:16px;margin-bottom:16px}
    .an-bar-row{display:flex;align-items:center;gap:12px;margin-bottom:10px}
    .an-bar-label{font-size:13px;color:var(--text2);width:140px;flex-shrink:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .an-bar-track{flex:1;background:var(--surface2);border-radius:3px;height:18px;position:relative}
    .an-bar-fill{height:100%;border-radius:3px;background:var(--accent);transition:width .4s ease}
    .an-bar-count{font-family:var(--font-head);font-size:13px;font-weight:700;color:var(--text2);width:30px;text-align:right;flex-shrink:0}
    /* PARTS */
    .parts-toolbar{display:flex;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}
    .parts-status-low{color:var(--danger);font-weight:700}
    .parts-status-ok{color:var(--ok)}
    @media(max-width:900px){.analytics-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:600px){.analytics-grid{grid-template-columns:1fr}}