*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --s1:#06101c;--s2:#0b1829;--s3:#101f34;--s4:#162840;
  --line:#1a2d47;--line-s:#243d5e;
  --sky:#0ea5e9;--sky-h:#38bdf8;--sky-10:rgba(14,165,233,.10);--sky-20:rgba(14,165,233,.20);
  --sky-glow:0 0 24px -6px rgba(14,165,233,.35);
  --emerald:#34d399;--em-10:rgba(52,211,153,.10);--em-20:rgba(52,211,153,.20);
  --red:#f87171;--red-10:rgba(248,113,113,.10);--red-20:rgba(248,113,113,.20);
  --amber:#fbbf24;--am-10:rgba(251,191,36,.10);--am-20:rgba(251,191,36,.20);
  --text:#f1f5f9;--t300:#d1d5db;--t400:#9ca3af;--t500:#6b7280;--t600:#4b5563;--t700:#374151;
  --mono:'Consolas','Courier New',monospace;
  --font:'Segoe UI',system-ui,Arial,sans-serif;
  --sw:220px;
}
html,body{height:100%;-webkit-font-smoothing:antialiased}
body{background:var(--s1);color:var(--t400);font-family:var(--font);font-size:14px;line-height:1.5}
a{color:var(--sky);text-decoration:none}a:hover{color:var(--sky-h)}
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--line);border-radius:9px}

/* Layout */
.layout{display:flex;min-height:100vh}

/* Sidebar */
.sidebar{width:var(--sw);background:var(--s2);border-right:1px solid var(--line);display:flex;flex-direction:column;position:fixed;left:0;top:0;bottom:0;z-index:10}
.sidebar-logo{display:flex;align-items:center;gap:12px;padding:24px 20px 20px}
.logo-icon{width:32px;height:32px;background:linear-gradient(135deg,#0ea5e9,#6366f1);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:var(--sky-glow)}
.logo-icon svg{color:#fff}
.logo-text p:first-child{font-weight:700;font-size:13px;color:var(--text);line-height:1.2}
.logo-text p:last-child{font-size:10px;color:var(--t600);margin-top:2px}
.sidebar-divider{height:1px;background:var(--line);margin:0 16px 16px}
.sidebar-nav{flex:1;padding:0 12px;display:flex;flex-direction:column;gap:2px}
.nav-item{position:relative;display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:8px;font-size:13px;font-weight:500;color:var(--t500);transition:color .15s,background .15s;text-decoration:none}
.nav-item:hover{color:var(--text);background:var(--s3)}
.nav-item.active{color:var(--sky);background:var(--sky-10)}
.nav-item.active::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:20px;background:var(--sky);border-radius:0 4px 4px 0}
.sidebar-footer{padding:16px 20px;border-top:1px solid var(--line);display:flex;align-items:center;gap:10px;font-size:11px;color:var(--t600)}
.ping-dot{position:relative;display:flex;width:8px;height:8px;flex-shrink:0}
.ping-dot::before{content:'';position:absolute;inset:0;border-radius:50%;background:var(--emerald);opacity:.6;animation:ping 1.8s ease-in-out infinite}
.ping-dot::after{content:'';display:block;width:8px;height:8px;border-radius:50%;background:var(--emerald)}
@keyframes ping{75%,100%{transform:scale(2);opacity:0}}

/* Main */
.main{flex:1;margin-left:var(--sw);padding:24px;display:flex;flex-direction:column}
.page-head{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:20px;flex-wrap:wrap;gap:12px}
.page-head h1{font-size:20px;font-weight:700;color:var(--text)}
.page-head p{font-size:13px;color:var(--t500);margin-top:2px}
.page-head-actions{display:flex;gap:8px}

/* Stat cards */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px;margin-bottom:20px}
.stat-card{background:var(--s2);border:1px solid var(--line);border-radius:12px;padding:14px 16px;display:flex;align-items:center;gap:12px;position:relative;overflow:hidden}
.stat-card::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;border-radius:0 3px 3px 0}
.stat-sky .stat-icon{background:var(--sky-10);color:var(--sky)}.stat-sky::before{background:var(--sky)}
.stat-green .stat-icon{background:var(--em-10);color:var(--emerald)}.stat-green::before{background:var(--emerald)}
.stat-red .stat-icon{background:var(--red-10);color:var(--red)}.stat-red::before{background:var(--red)}
.stat-icon{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.stat-icon svg{width:16px;height:16px}
.stat-num{font-size:22px;font-weight:700;color:var(--text);line-height:1}
.stat-lbl{font-size:12px;color:var(--t500);margin-top:3px}

/* Card */
.card-flush{background:var(--s2);border:1px solid var(--line);border-radius:12px;overflow:hidden}

/* Table */
.tbl-wrap{overflow-x:auto}
.tbl{width:100%;border-collapse:collapse;font-size:13px}
.tbl thead tr{border-bottom:1px solid var(--line)}
.tbl thead th{padding:12px 16px;text-align:left;font-size:13px;font-weight:500;color:var(--t500);white-space:nowrap}
.tbl tbody tr{border-bottom:1px solid rgba(26,45,71,.4);transition:background .12s}
.tbl tbody tr:last-child{border-bottom:none}
.tbl tbody tr:hover{background:rgba(16,31,52,.5)}
.tbl tbody tr.row-offline{opacity:.55}
.tbl td{padding:14px 16px;vertical-align:middle}
.tbl-footer{padding:10px 16px;border-top:1px solid rgba(26,45,71,.5);display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--t600)}

/* Badges */
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 9px;border-radius:999px;font-size:12px;font-weight:500;white-space:nowrap}
.badge::before{content:'';width:6px;height:6px;border-radius:50%;flex-shrink:0}
.badge-online{background:var(--em-10);color:var(--emerald);border:1px solid var(--em-20)}.badge-online::before{background:var(--emerald)}
.badge-offline{background:var(--red-10);color:var(--red);border:1px solid var(--red-20)}.badge-offline::before{background:var(--red)}
.badge-unknown{background:var(--s3);color:var(--t500);border:1px solid var(--line)}.badge-unknown::before{background:var(--t600)}

/* Cells */
.cell-name a,.cell-name span{font-weight:500;color:var(--text)}
.cell-sub{font-size:12px;color:var(--t600);margin-top:2px}
.cell-mono{font-family:var(--mono);color:var(--t400);font-size:13px}
.cell-dim{color:var(--t400);font-size:13px}

/* Connect btn */
.btn-connect{display:inline-flex;align-items:center;gap:5px;padding:5px 12px;border-radius:8px;background:var(--sky-10);border:1px solid var(--sky-20);color:var(--sky);font-size:12px;font-weight:500;white-space:nowrap;transition:background .15s;text-decoration:none}
.btn-connect:hover{background:var(--sky-20);color:var(--sky-h)}
.btn-connect-off{background:var(--s3);border-color:var(--line);color:var(--t600);pointer-events:none}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:8px;border:1px solid transparent;font-size:13px;font-weight:500;cursor:pointer;text-decoration:none;white-space:nowrap;transition:all .15s;font-family:var(--font)}
.btn-primary{background:#0369a1;color:#fff}.btn-primary:hover{background:#0284c7;color:#fff;box-shadow:var(--sky-glow)}
.btn-secondary{background:var(--s3);border-color:var(--line);color:var(--t300)}.btn-secondary:hover{background:var(--s4);border-color:var(--line-s);color:var(--text)}
.btn-danger{background:var(--red-10);border-color:var(--red-20);color:var(--red)}.btn-danger:hover{background:rgba(248,113,113,.2)}

/* Row actions */
.row-actions{display:flex;align-items:center;gap:4px}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:8px;border:1px solid transparent;background:transparent;color:var(--t500);cursor:pointer;transition:all .12s}
.icon-btn:hover{color:var(--sky);background:var(--sky-10);border-color:var(--sky-20)}
.icon-btn.edit:hover{color:#a78bfa;background:rgba(139,92,246,.10);border-color:rgba(139,92,246,.2)}
.icon-btn.del:hover{color:var(--red);background:var(--red-10);border-color:var(--red-20)}

/* Forms */
.panel{background:var(--s2);border:1px solid var(--line);border-radius:12px;padding:24px}
.form-grid{display:grid;gap:14px;margin-bottom:14px}
.form-group{display:flex;flex-direction:column;gap:6px}
.label{font-size:13px;font-weight:500;color:var(--t300)}
.label-hint{font-size:11px;color:var(--t600);font-weight:400}
.form-input{background:var(--s1);border:1px solid var(--line);border-radius:8px;padding:8px 12px;color:var(--text);font-size:13px;font-family:var(--font);outline:none;width:100%;transition:border-color .15s,box-shadow .15s}
.form-input::placeholder{color:var(--t600)}
.form-input:focus{border-color:var(--sky);box-shadow:0 0 0 1px var(--sky)}
.checkbox-row{display:flex;align-items:center;gap:8px}
.checkbox-row input{width:15px;height:15px;accent-color:var(--sky);cursor:pointer}
.checkbox-row label{font-size:13px;color:var(--t300);cursor:pointer}
.form-actions{display:flex;gap:10px}

/* Alerts */
.alert{display:flex;align-items:center;gap:8px;padding:11px 14px;border-radius:8px;margin-bottom:16px;font-size:13px}
.alert-err{background:var(--red-10);border:1px solid var(--red-20);color:var(--red)}

/* Empty */
.empty-state{padding:60px 20px;text-align:center;color:var(--t600)}

@media(max-width:860px){
  .mobile-bar{display:flex}
  .sidebar{display:flex;flex-direction:column;transform:translateX(-100%);transition:transform .25s ease;z-index:250}
  .sidebar.open{transform:translateX(0)}
  .sidebar-overlay{z-index:240}
  .main{margin-left:0}
}

/* Latency colors */
.latency{font-family:var(--mono);font-size:12px;font-weight:600;padding:2px 7px;border-radius:4px}
.lat-fast{color:#34d399;background:rgba(52,211,153,.1)}
.lat-ok{color:#fbbf24;background:rgba(251,191,36,.1)}
.lat-slow{color:#f87171;background:rgba(248,113,113,.1)}

/* Toolbar / filter */
.toolbar{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap;align-items:center}
.filter-form{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.input-wrap{position:relative}
.input-wrap svg{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--t600);pointer-events:none}
.input-wrap input{padding-left:30px!important}
.input{background:var(--s3);border:1px solid var(--line);border-radius:8px;padding:7px 12px;color:var(--text);font-size:13px;font-family:var(--font);outline:none;transition:border-color .15s,box-shadow .15s}
.input::placeholder{color:var(--t600)}
.input:focus{border-color:var(--sky);box-shadow:0 0 0 1px var(--sky)}
.btn-sm{padding:6px 12px;font-size:12px}

/* Nav divider */
.nav-divider{height:1px;background:var(--line);margin:8px 12px}

/* Breadcrumb */
.breadcrumb{display:flex;align-items:center;gap:4px;font-size:12px;color:var(--t600);margin-bottom:16px}
.breadcrumb a{color:var(--t600)}
.breadcrumb a:hover{color:var(--sky)}

/* Uptime bar */
.uptime-bar{display:flex;gap:2px;flex-wrap:wrap}
.uptime-tick{display:inline-block;width:6px;height:22px;border-radius:2px;cursor:default;flex-shrink:0}
.uptime-tick.up{background:var(--emerald)}
.uptime-tick.down{background:var(--red)}

/* Alert ok */
.alert-ok{background:var(--em-10);border:1px solid var(--em-20);color:var(--emerald)}

/* Code block */
.code-block{background:var(--s1);border:1px solid var(--line);border-radius:6px;padding:12px 14px;font-family:var(--mono);font-size:12px;color:var(--t300);white-space:pre}
.code-block code{font-family:var(--mono)}
code{background:var(--s3);border:1px solid var(--line);border-radius:3px;padding:1px 5px;font-family:var(--mono);font-size:12px;color:var(--sky)}
.ip-port{color:var(--t600);font-family:var(--mono);font-size:13px}
.type-badge{font-size:11px;font-family:var(--mono);background:var(--s3);border:1px solid var(--line);color:var(--sky);padding:2px 7px;border-radius:4px}
.sort-btn{display:inline-flex;align-items:center;gap:5px;padding:5px 10px;border-radius:6px;font-size:12px;font-weight:500;border:1px solid var(--line);color:var(--t500);background:var(--s3);text-decoration:none;transition:all .15s;white-space:nowrap}
.sort-btn:hover{border-color:var(--line-s);color:var(--text);text-decoration:none}
.sort-btn.active{background:var(--sky-10);border-color:var(--sky-20);color:var(--sky)}

/* Mobile bar */
.mobile-bar{display:none;background:var(--s2);border-bottom:1px solid var(--line);padding:12px 16px;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:200}
.mobile-logo{font-size:16px;font-weight:800;color:var(--text)}
.burger{background:none;border:none;cursor:pointer;display:flex;flex-direction:column;gap:5px;padding:4px}
.burger span{display:block;width:22px;height:2px;background:var(--t400);border-radius:2px;transition:all .2s}
.burger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.burger.active span:nth-child(2){opacity:0}
.burger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* Sidebar overlay */
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:9}
.sidebar-overlay.show{display:block}

/* Latency alert */
.lat-alert{color:#f59e0b;background:rgba(245,158,11,.12);font-family:var(--mono);font-size:12px;font-weight:600;padding:2px 7px;border-radius:4px;border:1px solid rgba(245,158,11,.3)}
.icon-btn.disabled{opacity:.3;pointer-events:none}

/* Hide columns on small screens */
.hide-lg{} /* always visible */
@media(max-width:1200px){.hide-lg{display:none}}
@media(max-width:1000px){.hide-md{display:none}}
@media(max-width:700px){.hide-sm{display:none}}

/* Mobile layout */
@media(max-width:768px){
  .main{padding:14px}
  .stat-grid{grid-template-columns:1fr 1fr}
  .stat-num{font-size:18px}
  .page-head{flex-direction:column;gap:10px}
  .page-head-actions{flex-wrap:wrap;gap:6px}
  .toolbar{flex-direction:column;align-items:stretch}
  .filter-form{flex-wrap:wrap;gap:6px}
  .filter-form .input{width:100% !important}
  .sort-btn{font-size:11px;padding:4px 8px}
  .tbl thead th{padding:8px 10px;font-size:10px}
  .tbl td{padding:8px 10px}
  .panel{padding:16px}
  .form-grid{grid-template-columns:1fr !important}
}

/* Sort row — горизонтальний скрол на телефонах */
@media(max-width:600px){
  .sort-row{flex-wrap:nowrap!important;overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:3px;scrollbar-width:none}
  .sort-row::-webkit-scrollbar{display:none}
  .sort-row .sort-btn{flex-shrink:0}
  .sort-row-label{display:none}
}

/* ── Row flash animations ───────────────────────────────────────────────── */
@keyframes row-went-offline {
  0%   { background: transparent; }
  12%  { background: rgba(248,113,113,.35); box-shadow: inset 3px 0 0 #f87171; }
  28%  { background: transparent; box-shadow: none; }
  42%  { background: rgba(248,113,113,.22); box-shadow: inset 3px 0 0 rgba(248,113,113,.6); }
  58%  { background: transparent; box-shadow: none; }
  72%  { background: rgba(248,113,113,.1); }
  100% { background: transparent; }
}
@keyframes row-came-online {
  0%   { background: transparent; }
  15%  { background: rgba(52,211,153,.25); box-shadow: inset 3px 0 0 #34d399; }
  50%  { background: rgba(52,211,153,.1); box-shadow: none; }
  100% { background: transparent; }
}
.row-flash-offline { animation: row-went-offline 2s ease-out; }
.row-flash-online  { animation: row-came-online  1.2s ease-out; }

/* ── Light theme ─────────────────────────────────────────────────────────── */
body.light{
  --s1:#f1f5f9;--s2:#ffffff;--s3:#f8fafc;--s4:#e2e8f0;
  --line:#e2e8f0;--line-s:#cbd5e1;
  --sky:#0284c7;--sky-h:#0369a1;
  --sky-10:rgba(2,132,199,.1);--sky-20:rgba(2,132,199,.18);
  --sky-glow:0 0 20px -8px rgba(2,132,199,.25);
  --emerald:#059669;--em-10:rgba(5,150,105,.1);--em-20:rgba(5,150,105,.18);
  --red:#dc2626;--red-10:rgba(220,38,38,.1);--red-20:rgba(220,38,38,.18);
  --amber:#b45309;--am-10:rgba(180,83,9,.1);--am-20:rgba(180,83,9,.18);
  --text:#0f172a;--t300:#1e293b;--t400:#334155;--t500:#64748b;--t600:#94a3b8;--t700:#e2e8f0;
}
body.light .tbl tbody tr{border-bottom-color:#e2e8f0}
body.light .tbl tbody tr:hover{background:rgba(241,245,249,.9)}
body.light .tbl-footer{border-top-color:#e2e8f0}
body.light .card-flush{box-shadow:0 1px 3px rgba(15,23,42,.06)}
body.light .stat-card{box-shadow:0 1px 3px rgba(15,23,42,.06)}
body.light .ping-dot::after,.light .ping-dot::before{background:var(--emerald)}
body.light ::-webkit-scrollbar-thumb{background:var(--line-s)}

/* ── Settings — картки та радіо-кнопки на мобільному ────────────────────── */
@media(max-width:640px){
  .s-card-head{padding:14px 16px;gap:10px}
  .s-card-body{padding:16px 18px;gap:12px}
  .s-card-title{font-size:14px}
  .s-card-sub{font-size:12px}
  .s-footer{flex-wrap:wrap;gap:8px}
  .s-info-box{padding:10px 12px;font-size:12px}
}
@media(max-width:480px){
  .s-tabs{padding:4px;gap:2px}
  .s-tab{padding:7px 10px;font-size:12px;gap:4px}
  .s-tab svg{display:none}
  .s-radio-group{gap:4px}
  .s-radio{padding:7px 12px;font-size:12px;min-width:52px}
}

/* ── Live Ping — дрібні телефони ─────────────────────────────────────────── */
@media(max-width:480px){
  .lp-grid{gap:10px}
  .lp-status-card{padding:18px 14px}
  .lp-sform-grid-2,.lp-sform-grid-3{grid-template-columns:1fr!important}
  .lp-log{height:140px}
}

/* ── Групи — форма додавання на мобільному ───────────────────────────────── */
@media(max-width:520px){
  .panel form[style*="display:flex;gap"]{flex-direction:column!important;align-items:stretch!important}
  .panel form[style*="display:flex;gap"] .btn{align-self:flex-start}
}

/* ── Фільтри — повна ширина на мобільному ────────────────────────────────── */
@media(max-width:600px){
  .toolbar .input,.filter-form .input{width:100%!important;max-width:100%}
  .toolbar label{font-size:12px}
}

/* ── Small phone (<480px) ──────────────────────────────────────────────────── */
@media(max-width:480px){
  .stat-grid{grid-template-columns:1fr 1fr}
  .stat-card{padding:10px 12px;gap:8px}
  .stat-num{font-size:18px}
  .stat-icon{width:30px;height:30px}
  .stat-icon svg{width:14px;height:14px}
  .stat-lbl{font-size:11px}
  .page-head h1{font-size:16px}
  .page-head p{font-size:12px}
  .mobile-bar{padding:13px 14px}
  .mobile-logo{font-size:15px}
  .tbl thead th{padding:7px 8px;font-size:10px}
  .tbl td{padding:10px 8px;font-size:12px}
  .btn{padding:9px 14px;font-size:12px}
  .btn-connect{padding:5px 10px;font-size:11px}
  .badge{font-size:11px;padding:3px 8px}
  .nav-item{padding:12px 14px}
  .page-head-actions{gap:6px}
  .toolbar{gap:6px}
  .sort-btn{font-size:10px;padding:4px 7px}
}

/* ── TV / 1440p ─────────────────────────────────────────────────────────────── */
@media(min-width:1440px){
  :root{--sw:240px}
  .main{padding:28px 32px}
  .stat-num{font-size:26px}
  .stat-lbl{font-size:13px}
  .stat-icon{width:40px;height:40px}
  .stat-icon svg{width:18px;height:18px}
  .page-head h1{font-size:22px}
  .page-head p{font-size:14px}
  .tbl thead th{font-size:14px;padding:14px 18px}
  .tbl td{padding:16px 18px;font-size:14px}
  .nav-item{font-size:14px}
  .badge{font-size:13px;padding:4px 11px}
  .latency{font-size:13px;padding:3px 9px}
  .sort-btn{font-size:13px;padding:6px 12px}
  .btn{font-size:14px;padding:9px 18px}
}

/* ── TV / 1920p (Full HD та вище) ───────────────────────────────────────────── */
@media(min-width:1920px){
  :root{--sw:260px}
  body{font-size:16px}
  .stat-num{font-size:32px}
  .stat-lbl{font-size:14px}
  .stat-icon{width:48px;height:48px}
  .stat-icon svg{width:22px;height:22px}
  .stat-card{padding:18px 20px;border-radius:14px;gap:16px}
  .stat-grid{gap:18px;margin-bottom:24px}
  .page-head h1{font-size:28px}
  .page-head p{font-size:15px}
  .page-head{margin-bottom:24px}
  .main{padding:36px 44px}
  .tbl thead th{font-size:15px;padding:16px 20px}
  .tbl td{padding:20px 20px;font-size:15px}
  .nav-item{font-size:15px;padding:13px 14px}
  .sidebar-logo{padding:30px 24px 24px}
  .logo-text p:first-child{font-size:15px}
  .logo-text p:last-child{font-size:12px}
  .badge{font-size:14px;padding:5px 12px}
  .badge::before{width:7px;height:7px}
  .btn{font-size:15px;padding:10px 20px}
  .btn-connect{font-size:13px;padding:7px 14px}
  .input{font-size:14px;padding:9px 14px}
  .form-input{font-size:15px;padding:11px 15px}
  .card-flush .tbl-footer{padding:14px 20px;font-size:13px}
  .latency{font-size:14px;padding:3px 10px}
  .sort-btn{font-size:14px;padding:7px 14px}
  .sidebar-footer{font-size:13px;padding:18px 22px}
  .icon-btn{width:34px;height:34px}
  .cell-sub{font-size:13px}
  .nav-divider{margin:10px 12px}
}