:root{--bg: #f4f6f9;--panel: #ffffff;--ink: #1c2430;--muted: #6b7683;--border: #e2e7ee;--brand: #1f6feb;--brand-dark: #1a5fd0;--ok: #1a7f45;--ok-bg: #e6f5ec;--soon: #9a6a00;--soon-bg: #fbf1d8;--danger: #c02626;--danger-bg: #fbe4e4;--shadow: 0 2px 8px rgba(20, 30, 45, .08);--radius: 10px}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--ink);font-size:14px}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;background:var(--panel);border-bottom:1px solid var(--border);box-shadow:var(--shadow);position:sticky;top:0;z-index:10}.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--ink);text-decoration:none}.brand-mark{font-size:20px;color:var(--brand)}.app-header nav{display:flex;gap:8px}.nav-link{padding:7px 14px;border-radius:8px;text-decoration:none;color:var(--muted);font-weight:600}.nav-link:hover{background:var(--bg);color:var(--ink)}.nav-link.active{background:var(--brand);color:#fff}.app-main{flex:1;max-width:1240px;width:100%;margin:0 auto;padding:24px}.app-footer{text-align:center;padding:16px;color:var(--muted);font-size:12px}.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:16px}.page-head h1{margin:0;font-size:22px}.stat-cards{display:flex;gap:12px}.stat-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:10px 16px;text-align:center;min-width:92px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:2px;color:var(--muted);font-size:12px}.stat-num{font-size:22px;font-weight:700;color:var(--ink)}.stat-card.warn .stat-num{color:var(--soon)}.stat-card.danger .stat-num{color:var(--danger)}.toolbar{display:flex;gap:10px;margin-bottom:14px;flex-wrap:wrap}.toolbar.between{justify-content:space-between;align-items:center}.toolbar .input:first-child{flex:1;min-width:220px}.input{padding:9px 11px;border:1px solid var(--border);border-radius:8px;font-size:14px;background:#fff;color:var(--ink);font-family:inherit;width:100%}.input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px #1f6feb1f}select.input{max-width:220px}.btn{padding:9px 16px;border:1px solid var(--border);background:#fff;color:var(--ink);border-radius:8px;cursor:pointer;font-weight:600;font-size:14px;font-family:inherit}.btn:hover{background:var(--bg)}.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}.btn.primary:hover{background:var(--brand-dark)}.btn.primary:disabled{opacity:.6;cursor:default}.btn.danger{color:var(--danger);border-color:#f0c0c0}.btn.danger:hover{background:var(--danger-bg)}.btn.small{padding:5px 10px;font-size:12px}.icon-btn{background:none;border:none;font-size:18px;cursor:pointer;color:var(--muted)}.icon-btn:hover{color:var(--ink)}.link-danger{background:none;border:none;color:var(--danger);cursor:pointer;font-size:12px;text-decoration:underline;padding:0}.table-wrap{overflow-x:auto;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}table.grid{width:100%;border-collapse:collapse;font-size:13.5px}table.grid th,table.grid td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border);white-space:nowrap}table.grid th{background:#fafbfd;color:var(--muted);font-weight:600;position:sticky;top:0}table.grid tbody tr{cursor:pointer}table.grid tbody tr:hover{background:#f7f9fc}.cell-name{font-weight:600;white-space:normal;min-width:180px}.center{text-align:center}.nowrap{white-space:nowrap}.row-actions{display:flex;gap:6px}.row-actions .btn{cursor:pointer}.row-overdue{background:var(--danger-bg)}.row-overdue:hover{background:#f7d7d7}.row-soon{background:var(--soon-bg)}.row-soon:hover{background:#f6e8c4}.days-overdue{color:var(--danger);font-weight:700}.days-soon{color:var(--soon);font-weight:700}.days-ok{color:var(--ok)}.days-none{color:var(--muted)}.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600}.status-in_service{background:var(--ok-bg);color:var(--ok)}.status-in_inspection{background:#e5eefb;color:var(--brand)}.status-in_isolation{background:#fde9d6;color:#b25a12}.status-expired{background:var(--danger-bg);color:var(--danger)}.status-decommissioned{background:#ececf0;color:#55606e}.action-create{background:var(--ok-bg);color:var(--ok)}.action-update{background:#e5eefb;color:var(--brand)}.action-delete{background:var(--danger-bg);color:var(--danger)}.action-certificate_added{background:#ede7fb;color:#6a3fd0}.action-certificate_deleted{background:#ececf0;color:#55606e}.muted{color:var(--muted)}.small{font-size:12px}.error{color:var(--danger);font-weight:600}.tabs{display:flex;gap:4px;border-bottom:2px solid var(--border);margin-bottom:16px}.tab{background:none;border:none;padding:10px 18px;cursor:pointer;font-weight:600;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-2px;font-size:14px}.tab.active{color:var(--brand);border-bottom-color:var(--brand)}.admin-user{display:flex;align-items:center;gap:12px}.toolbar-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.toolbar-actions a.btn{text-decoration:none;display:inline-flex;align-items:center}.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.login-wrap{display:flex;justify-content:center;padding-top:6vh}.login-card{width:340px;display:flex;flex-direction:column;gap:14px}.login-card h1{margin:0 0 4px;font-size:20px}.login-card label,.device-form label{display:flex;flex-direction:column;gap:5px;font-weight:600;font-size:13px}.hint{text-align:center;margin:0}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#121a2680;display:flex;align-items:flex-start;justify-content:center;padding:40px 16px;z-index:50;overflow-y:auto}.modal{background:var(--panel);border-radius:var(--radius);box-shadow:0 12px 40px #00000040;width:100%;max-width:520px}.modal-wide{max-width:760px}.modal-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border)}.modal-head h2{margin:0;font-size:17px}.modal-body{padding:20px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form-grid .span-2{grid-column:1 / -1}.form-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}.extend-form{display:flex;flex-direction:column;gap:14px}.section-title{font-size:15px;margin:20px 0 8px}.cert-section{border-top:1px solid var(--border);margin-top:20px;padding-top:8px}.cert-upload{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:8px 0}.inline-date{flex-direction:row!important;align-items:center;gap:6px!important;font-weight:600}.inline-date .input{width:auto}.cert-list{list-style:none;padding:0;margin:8px 0 0;display:flex;flex-direction:column;gap:6px}.cert-list li{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:6px 0;border-bottom:1px dashed var(--border)}.cert-list a{color:var(--brand);text-decoration:none;font-weight:600}.cert-list a:hover{text-decoration:underline}.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:0}.detail-grid>div,.detail-notes{display:flex;flex-direction:column;gap:3px}.detail dt{font-size:12px;color:var(--muted);font-weight:600}.detail dd{margin:0;font-size:14px}.detail-notes{margin-top:14px}.change-list{list-style:none;margin:0;padding:0;white-space:normal}.change-list li{padding:1px 0}.field-name{font-weight:600}.change-list .old{color:var(--muted);text-decoration:line-through}.change-list .new{color:var(--ink);font-weight:600}@media (max-width: 640px){.form-grid,.detail-grid{grid-template-columns:1fr}.stat-cards{width:100%}.app-main{padding:16px}}