:root{--color-bg: #f5f6fa;--color-surface: #ffffff;--color-surface-2: #f0f1f5;--color-border: #dde0ea;--color-text: #1a1d2e;--color-text-muted: #6b7280;--color-si-brand: #1C3074;--color-primary: #1C3074;--color-primary-h: #152559;--color-success: #16a34a;--color-warning: #d97706;--color-danger: #dc2626;--color-online: #22c55e;--color-offline: #9ca3af;--color-alarm: #ef4444;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--shadow-sm: 0 1px 3px rgba(0,0,0,.08);--shadow-md: 0 4px 12px rgba(0,0,0,.12);--nav-width: 220px;--header-h: 56px;--font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace}[data-theme=dark]{--color-bg: #0f1117;--color-surface: #1a1d2e;--color-surface-2: #242840;--color-border: #2e3250;--color-text: #e4e6f0;--color-text-muted: #9196b0;--color-primary: #4a7aff;--color-primary-h: #3a6aef;--shadow-sm: 0 1px 3px rgba(0,0,0,.3);--shadow-md: 0 4px 12px rgba(0,0,0,.4)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:15px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.5}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer}input,select,textarea{font:inherit}.app-shell{display:grid;grid-template-columns:var(--nav-width) 1fr;grid-template-rows:var(--header-h) 1fr;min-height:100vh}.header{grid-column:1 / -1;display:flex;align-items:center;gap:12px;padding:0 20px;background:var(--color-surface);border-bottom:1px solid var(--color-border);box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:50}.header-logo{font-weight:700;font-size:1.05rem;letter-spacing:-.3px;color:var(--color-text);display:flex;align-items:center;gap:8px}.header-logo span{color:var(--color-primary)}.header-spacer{flex:1}.header-user{font-size:.85rem;color:var(--color-text-muted)}.header-user strong{color:var(--color-text)}.sidebar{background:var(--color-surface);border-right:1px solid var(--color-border);padding:16px 0;overflow-y:auto}.nav-section-label{font-size:.7rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--color-text-muted);padding:12px 16px 4px}.nav-item{display:flex;align-items:center;gap:10px;padding:9px 16px;color:var(--color-text);font-size:.9rem;border-radius:0;transition:background 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var(--color-border)}.box-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(345px,1fr));gap:12px}.box-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:16px 18px;cursor:pointer;max-width:480px;transition:box-shadow .15s,border-color .15s;display:flex;flex-direction:column}.box-card:hover{box-shadow:var(--shadow-md);border-color:var(--color-primary)}.box-card.alarm{border-left:3px solid var(--color-alarm);border-radius:0 var(--radius-md) var(--radius-md) 0}.box-card-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:12px}.box-serial{font-weight:600;font-size:1.07rem;font-family:var(--font-mono)}.box-meta{font-size:.87rem;color:var(--color-text-muted);margin-top:2px}.box-card-body{display:flex;gap:16px;align-items:stretch}.box-card-stats{display:flex;flex-direction:column;justify-content:space-between;flex-shrink:0;width:138px}.box-stat-row{display:flex;flex-direction:column;gap:2px}.box-stat-label{font-size:.73rem;text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-muted)}.box-stat-val{font-size:1rem;font-weight:600;color:var(--color-text)}.box-stat-val.alarm{color:var(--color-alarm)}.box-card-spark{flex:1;min-width:0;display:flex;flex-direction:column}.spark-range-row{display:flex;gap:4px;justify-content:flex-end;margin-bottom:5px}.spark-range-btn{font-size:.72rem;padding:2px 7px;border-radius:99px;border:1px solid var(--color-border);background:transparent;color:var(--color-text-muted);cursor:pointer;transition:background .1s,color .1s}.spark-range-btn.active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.box-stats{display:flex;gap:16px;font-size:.82rem;color:var(--color-text-muted)}.box-stat strong{color:var(--color-text);font-weight:600}.badge{display:inline-flex;align-items:center;gap:5px;padding:2px 8px;border-radius:99px;font-size:.76rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em}.badge:before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}.badge.online{color:var(--color-success);background:#dcfce7}.badge.offline{color:var(--color-text-muted);background:var(--color-surface-2)}.badge.alarm{color:var(--color-alarm);background:#fee2e2}[data-theme=dark] .badge.online{background:#22c55e26}[data-theme=dark] .badge.offline{background:var(--color-surface-2)}[data-theme=dark] 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12px;font-size:.75rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--color-text-muted);border-bottom:1px solid var(--color-border)}td{padding:10px 12px;border-bottom:1px solid var(--color-border);vertical-align:middle}tr:last-child td{border-bottom:none}tr:hover td{background:var(--color-surface-2)}.form-field{display:flex;flex-direction:column;gap:5px}.form-field label{font-size:.85rem;font-weight:500}.input{padding:8px 12px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);color:var(--color-text);outline:none;transition:border-color .15s}.input:focus{border-color:var(--color-primary)}.input.error{border-color:var(--color-danger)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 16px;border:none;border-radius:var(--radius-sm);font-size:.88rem;font-weight:500;transition:background .12s,opacity .12s}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--color-primary-h)}.btn-secondary{background:var(--color-surface-2);color:var(--color-text);border:1px solid var(--color-border)}.btn-secondary:hover:not(:disabled){background:var(--color-border)}.btn-danger{background:var(--color-danger);color:#fff}.btn-sm{padding:5px 10px;font-size:.8rem}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:#f0f2f8;background-image:radial-gradient(ellipse at 20% 50%,rgba(28,48,116,.07) 0%,transparent 60%),radial-gradient(ellipse at 80% 20%,rgba(28,48,116,.05) 0%,transparent 50%)}[data-theme=dark] .login-page{background:#0b0d18;background-image:radial-gradient(ellipse at 20% 50%,rgba(74,122,255,.08) 0%,transparent 60%),radial-gradient(ellipse at 80% 20%,rgba(74,122,255,.05) 0%,transparent 50%)}.login-box{background:#fff;border:1px solid #dde0ea;border-radius:16px;padding:44px 40px 36px;width:100%;max-width:420px;box-shadow:0 8px 32px #1c30741f,0 1px 4px #0000000f;display:flex;flex-direction:column;gap:0}[data-theme=dark] .login-box{background:#1a1d2e;border-color:#2e3250;box-shadow:0 8px 32px #0006,0 1px 4px #0000004d}.login-logo-wrap{text-align:center;margin-bottom:6px}[data-theme=dark] .login-logo-wrap svg{filter:brightness(0) invert(.88)}.login-divider{width:40px;height:2px;background:var(--color-primary);border-radius:2px;margin:14px auto 20px;opacity:.35}.login-subtitle{text-align:center;font-size:.72rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:#6b7280;margin-bottom:28px}[data-theme=dark] .login-subtitle{color:#9196b0}.login-form{display:flex;flex-direction:column;gap:16px}.login-form .form-field label{display:block;font-size:.8rem;font-weight:600;color:#374151;margin-bottom:6px;letter-spacing:.02em}[data-theme=dark] .login-form .form-field label{color:#c4c8dc}.login-form .input{font-size:.95rem;padding:12px 14px;border-radius:8px}.login-submit{width:100%;padding:13px;margin-top:6px;background:#1c3074;color:#fff;border:none;border-radius:8px;font-size:.95rem;font-weight:600;letter-spacing:.02em;cursor:pointer;transition:background .15s,opacity .15s}.login-submit:hover:not(:disabled){background:#152559}.login-submit:active:not(:disabled){opacity:.88}.login-submit:disabled{opacity:.55;cursor:not-allowed}.login-footer{margin-top:28px;text-align:center;font-size:.72rem;color:#9ca3af;letter-spacing:.03em}[data-theme=dark] .login-footer{color:#6b7280}.login-error{padding:10px 14px;background:#fee2e2;color:var(--color-danger);border-radius:6px;font-size:.85rem;margin-bottom:4px}[data-theme=dark] .login-error{background:#ef444426}.spinner-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:40px;color:var(--color-text-muted);font-size:.9rem}.spinner-wrap.fullscreen{min-height:100vh}@keyframes spin{to{transform:rotate(360deg)}}.spinner{width:28px;height:28px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .7s linear infinite}.empty-state{text-align:center;padding:40px 20px;color:var(--color-text-muted);font-size:.9rem}.error-state{padding:16px;background:#fee2e2;border:1px solid #fca5a5;border-radius:var(--radius-md);color:var(--color-danger);font-size:.88rem}[data-theme=dark] .error-state{background:#ef44441a;border-color:#ef44444d}.row{display:flex;align-items:center;gap:10px}.row.wrap{flex-wrap:wrap}.text-muted{color:var(--color-text-muted)}.text-mono{font-family:var(--font-mono)}.fw-bold{font-weight:700}.fs-sm{font-size:.82rem}.mt-4{margin-top:16px}.tag{display:inline-block;padding:2px 7px;border-radius:var(--radius-sm);font-size:.75rem;font-weight:600;background:var(--color-surface-2);color:var(--color-text-muted);border:1px solid 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var(--color-border);display:flex;justify-content:flex-end;gap:10px}.field{margin-bottom:14px}.field-label{display:block;font-size:.82rem;font-weight:600;color:var(--color-text-muted);margin-bottom:5px;text-transform:uppercase;letter-spacing:.04em}.field-input{width:100%;padding:8px 10px;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);color:var(--color-text);font-size:.9rem;transition:border-color .15s}.field-input:focus{outline:none;border-color:var(--color-primary)}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.btn-ghost{background:transparent;color:var(--color-text);border:1px solid var(--color-border)}.btn-ghost:hover:not(:disabled){background:var(--color-surface-2)}.btn-xs{padding:3px 8px;font-size:.75rem}.btn-danger:hover:not(:disabled){background:#b91c1c}.ml-auto{margin-left:auto}