/* =========================================================================
   Network Test suite — Ping Test / Jitter Test / Packet Loss Test.
   Shares one visual language (and this one file) with speed-test.css —
   same glass-card, Inter, big-radii premium skin — but is mode-themable
   via a modifier class (.is-ping / .is-jitter / .is-loss) so all three
   pages feel like one connected suite instead of three one-offs.
   Scoped entirely under .net-test-page so nothing here leaks onto other
   pages and nothing from site.css/tools.css overrides it.
   ========================================================================= */

.net-test-page{
  --nt-bg:#f4f8ff;
  --nt-surface:rgba(255,255,255,.86);
  --nt-surface-strong:#ffffff;
  --nt-text:#071936;
  --nt-text-soft:#415678;
  --nt-muted:#667896;
  --nt-line:rgba(217,230,245,.92);
  --nt-line-2:rgba(207,224,243,.95);
  --nt-brand:#256fff;
  --nt-brand-2:#13b6ff;
  --nt-accent:#7a4dff;
  --nt-success:#13b57b;
  --nt-warning:#ffaf1c;
  --nt-danger:#ff5d7a;
  --nt-shadow:0 12px 40px rgba(24,67,126,.10);
  --nt-shadow-lg:0 20px 60px rgba(16,52,102,.14);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  color:var(--nt-text);
  max-width:none;width:min(calc(100% - 36px),1280px);margin:14px auto 32px;padding:0;
  border-radius:30px;border:1px solid rgba(196,216,239,.95);
  background:
    radial-gradient(circle at 10% 0%, rgba(37,111,255,.07), transparent 22%),
    radial-gradient(circle at 92% 4%, rgba(122,77,255,.07), transparent 20%),
    linear-gradient(180deg, rgba(255,255,255,.9), rgba(252,254,255,.82));
  box-shadow:0 8px 30px rgba(36,91,164,.08), inset 0 1px 0 rgba(255,255,255,.7);
  position:relative;overflow:hidden;
}
.net-test-page *{box-sizing:border-box}
.net-test-page button,.net-test-page select,.net-test-page input{font:inherit;color:inherit}
.net-test-page a{color:inherit;text-decoration:none}

/* ---------- per-mode accent themes ---------- */
.net-test-page.is-ping{--nt-brand:#2563ff;--nt-brand-2:#13c8ff;--nt-accent:#7a4dff}
.net-test-page.is-jitter{--nt-brand:#8a3ffc;--nt-brand-2:#c14dff;--nt-accent:#2f6bff}
.net-test-page.is-loss{--nt-brand:#ff6a3d;--nt-brand-2:#ffaf1c;--nt-accent:#ff5d7a}

.nt-body{padding:22px}

/* ---------- status pill ---------- */
.net-test-page .tool-status-slot{display:flex;justify-content:center;margin-bottom:14px;min-height:0;padding:0}
.net-test-page .qdt-status{
  background:var(--nt-surface-strong);border:1px solid var(--nt-line);border-radius:999px;
  box-shadow:0 8px 18px rgba(45,95,170,.06);color:var(--nt-text-soft);font-size:13px;
  font-weight:600;justify-content:center;padding:11px 18px
}
.net-test-page .qdt-status-success{color:var(--nt-success)}
.net-test-page .qdt-status-error{color:var(--nt-danger)}
.net-test-page .qdt-status-warning{color:#b9860f}
.net-test-page .qdt-status-info,.net-test-page .qdt-status-loading,.net-test-page .qdt-status-processing,.net-test-page .qdt-status-clearing{color:var(--nt-brand)}

/* ---------- hero ---------- */
.nt-hero{display:grid;gap:16px;grid-template-columns:minmax(0,1.2fr) minmax(260px,.8fr);margin-bottom:18px}
.nt-hero-main,.nt-hero-side,.nt-card,.nt-floating-card{
  background:linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.8));
  border:1px solid var(--nt-line);border-radius:24px;box-shadow:var(--nt-shadow)
}
.nt-hero-main{
  padding:22px 24px;position:relative;overflow:hidden;min-height:170px;
  background:
    radial-gradient(circle at 80% 8%, color-mix(in srgb, var(--nt-accent) 14%, transparent), transparent 24%),
    radial-gradient(circle at 14% 20%, color-mix(in srgb, var(--nt-brand-2) 13%, transparent), transparent 24%),
    linear-gradient(180deg, rgba(255,255,255,.96), rgba(255,255,255,.84))
}
.nt-hero-side{padding:18px 20px;display:grid;gap:14px;align-content:start}
.nt-eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;
  background:rgba(250,253,255,.75);border:1px solid var(--nt-line);font-size:12px;font-weight:700;color:#1f4fae
}
.nt-eyebrow .dot{width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--nt-brand-2),var(--nt-accent));box-shadow:0 0 0 5px rgba(37,111,255,.08)}
.nt-hero h1{margin:12px 0 8px;font-size:38px;line-height:1.04;letter-spacing:-1.4px}
.nt-hero p{margin:0;max-width:680px;font-size:14.5px;color:var(--nt-text-soft);line-height:1.6}
.nt-chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px}
.nt-chip{
  display:inline-flex;align-items:center;gap:8px;padding:10px 13px;border-radius:15px;
  border:1px solid var(--nt-line-2);background:rgba(255,255,255,.7);font-size:12.5px;color:#244162;font-weight:600
}
.nt-chips .nt-chip:nth-child(1) .nt-icon{color:var(--nt-brand)}
.nt-chips .nt-chip:nth-child(2) .nt-icon{color:#0da678}
.nt-chips .nt-chip:nth-child(3) .nt-icon{color:var(--nt-accent)}
.nt-mini-stat{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center}
.nt-mini-stat strong{display:block;font-size:14px}
.nt-mini-stat span{display:block;font-size:11.5px;color:var(--nt-muted);margin-top:4px}
.nt-mini-badge{
  min-width:72px;padding:9px 12px;border-radius:14px;text-align:center;font-weight:800;font-size:13px;
  background:linear-gradient(135deg,#f4f9ff,#ffffff);border:1px solid var(--nt-line-2)
}
.nt-quick-actions{display:flex;gap:10px}
.nt-quick-actions button{
  flex:1;min-height:44px;border-radius:14px;border:1px solid var(--nt-line-2);
  background:rgba(255,255,255,.72);display:flex;align-items:center;justify-content:center;gap:8px;
  cursor:pointer;box-shadow:0 8px 18px rgba(52,97,164,.06);transition:.2s ease;font-size:12.5px;font-weight:700;color:#0d234a
}
.nt-quick-actions button:hover{transform:translateY(-1px);border-color:#b9d4f8}
.nt-quick-actions button:nth-child(1) .nt-icon{color:var(--nt-brand)}
.nt-quick-actions button:nth-child(2) .nt-icon{color:var(--nt-accent)}

.nt-icon{width:17px;height:17px;display:inline-grid;place-items:center;flex:0 0 auto}
.nt-icon svg{width:100%;height:100%;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ---------- dashboard 3-column layout ---------- */
.nt-dashboard{display:grid;gap:16px;grid-template-columns:236px minmax(0,1fr) 296px;align-items:start}
.nt-sidebar-left{display:flex;flex-direction:column;gap:14px}
.nt-sidebar-right{display:flex;flex-direction:column;gap:14px}
.nt-card{padding:18px}
.nt-section-label{font-size:11px;font-weight:800;letter-spacing:.07em;text-transform:uppercase;color:#6a7b98;margin-bottom:10px}
.nt-control-head{font-size:15.5px;font-weight:800;margin-bottom:12px}

.nt-select-item{
  min-height:60px;width:100%;padding:11px 13px;border-radius:16px;border:1px solid var(--nt-line-2);
  background:linear-gradient(180deg,#ffffff,#fbfdff);display:grid;grid-template-columns:34px 1fr 16px;gap:11px;align-items:center;
  cursor:pointer;text-align:left;transition:.2s ease;box-shadow:0 8px 18px rgba(42,89,153,.05);margin-bottom:10px
}
.nt-select-item:last-child{margin-bottom:0}
.nt-select-item:hover{transform:translateY(-1px);border-color:#bdd6fa;box-shadow:0 12px 22px rgba(45,95,170,.08)}
.nt-select-icon{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(135deg,#eff8ff,#f8f6ff);color:var(--nt-brand)}
.nt-select-item strong{display:block;font-size:13.5px}
.nt-select-item span{display:block;margin-top:3px;color:#657893;font-size:11.5px}
.nt-plain-value{padding:13px 15px;border-radius:16px;border:1px solid var(--nt-line-2);background:#fff}
.nt-plain-value strong{display:block;font-size:22px;letter-spacing:-.02em}
.nt-plain-value span{display:block;color:#617592;font-size:11.5px;margin-top:3px}
.nt-subtle-link{display:flex;justify-content:space-between;align-items:center;font-weight:700;font-size:13px;color:#21456e;cursor:pointer;background:none;border:0;width:100%;padding:0;margin-top:14px}
.nt-subtle-link:hover{color:var(--nt-brand)}

.nt-privacy-box{
  margin-top:auto;padding:18px;border-radius:22px;color:#fff;box-shadow:var(--nt-shadow-lg);
  background:
    radial-gradient(circle at 85% 10%, color-mix(in srgb, var(--nt-accent) 45%, transparent), transparent 26%),
    radial-gradient(circle at 8% 14%, color-mix(in srgb, var(--nt-brand-2) 38%, transparent), transparent 26%),
    linear-gradient(135deg,#0d1f44 0%, #173d83 48%, #5838da 100%)
}
.nt-privacy-box .nt-tag{display:inline-flex;align-items:center;gap:8px;padding:7px 10px;border-radius:999px;background:rgba(255,255,255,.14);font-size:10.5px;font-weight:800;letter-spacing:.06em;text-transform:uppercase}
.nt-privacy-box h2{margin:13px 0 7px;font-size:18px;line-height:1.25}
.nt-privacy-box p{margin:0;font-size:12.5px;line-height:1.6;color:rgba(255,255,255,.85)}

/* ---------- main panel ---------- */
.nt-main-panel{
  position:relative;overflow:hidden;padding:20px;
  background:
    radial-gradient(circle at 50% -10%, color-mix(in srgb, var(--nt-brand-2) 12%, transparent), transparent 26%),
    radial-gradient(circle at 100% 16%, color-mix(in srgb, var(--nt-accent) 12%, transparent), transparent 22%),
    linear-gradient(180deg, rgba(255,255,255,.94), rgba(255,255,255,.85));
  border:1px solid var(--nt-line);border-radius:24px;box-shadow:var(--nt-shadow)
}
.nt-panel-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;margin-bottom:14px}
.nt-panel-head h2{margin:0;font-size:20px;letter-spacing:-.02em}
.nt-panel-head p{margin:5px 0 0;color:var(--nt-text-soft);font-size:12.5px}
.nt-test-badge{
  display:inline-flex;align-items:center;gap:9px;padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--nt-line);
  box-shadow:0 8px 18px rgba(45,95,170,.06);font-size:11.5px;font-weight:700;color:#23486f;white-space:nowrap
}
.nt-pulse{width:9px;height:9px;border-radius:50%;background:var(--nt-success);box-shadow:0 0 0 0 rgba(19,181,123,.35);animation:ntPulse 1.9s infinite}
@keyframes ntPulse{0%{box-shadow:0 0 0 0 rgba(19,181,123,.35)}70%{box-shadow:0 0 0 11px rgba(19,181,123,0)}100%{box-shadow:0 0 0 0 rgba(19,181,123,0)}}

.nt-quick-start{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;align-items:center;margin-bottom:16px;
  padding:16px 18px;border:1px solid var(--nt-line);border-radius:22px;
  background:linear-gradient(180deg, rgba(255,255,255,.95), rgba(249,252,255,.88));box-shadow:0 10px 20px rgba(34,84,152,.05)
}
.nt-quick-start-copy strong{display:block;font-size:15.5px;margin-bottom:5px}
.nt-quick-start-copy p{margin:0;color:var(--nt-text-soft);font-size:12.5px;line-height:1.55;max-width:480px}
.nt-controls{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap}
.nt-aux-btn{
  width:52px;height:52px;border-radius:16px;border:1px solid var(--nt-line);background:linear-gradient(180deg,#ffffff,#fbfdff);
  display:grid;place-items:center;cursor:pointer;box-shadow:0 10px 18px rgba(45,95,170,.07);transition:.2s ease
}
.nt-aux-btn:hover{transform:translateY(-2px);border-color:#bdd6fa}
.nt-aux-btn .nt-icon{width:20px;height:20px;color:#15386f}
.nt-controls .nt-aux-btn:nth-child(1) .nt-icon{color:#0aa8d6}
.nt-controls .nt-aux-btn:nth-child(3) .nt-icon{color:var(--nt-accent)}
.nt-start-btn{
  width:122px;height:122px;border:0;border-radius:50%;cursor:pointer;
  background:linear-gradient(135deg,var(--nt-brand) 0%, var(--nt-brand-2) 42%, var(--nt-accent) 100%);
  color:#fff;font-weight:900;font-size:18px;letter-spacing:.02em;line-height:1.05;
  box-shadow:0 16px 34px rgba(31,115,255,.28), inset 0 1px 0 rgba(255,255,255,.35);
  transition:.25s ease;position:relative;overflow:hidden;display:grid;place-items:center;text-align:center;padding:14px;flex:0 0 auto
}
.nt-start-btn::before{content:"";position:absolute;inset:8px;border-radius:50%;border:1px solid rgba(255,255,255,.32);pointer-events:none}
.nt-start-btn::after{content:"";position:absolute;inset:1px;border-radius:50%;background:linear-gradient(180deg,rgba(255,255,255,.22),transparent 60%);pointer-events:none}
.nt-start-btn:hover{transform:translateY(-2px) scale(1.02);box-shadow:0 20px 40px rgba(31,115,255,.32)}
.nt-start-btn.is-running{background:linear-gradient(135deg,#102043,#164b9b,#6e48ff)}
.nt-start-sub{display:block;font-size:9.5px;font-weight:700;letter-spacing:.14em;opacity:.88;margin-top:6px}

/* ---------- metric tiles ---------- */
.nt-metric-row{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;margin-bottom:15px}
.nt-metric-row.is-four{grid-template-columns:repeat(4,1fr)}
.nt-metric-card{
  position:relative;padding:16px;border-radius:20px;border:1px solid var(--nt-line);
  background:linear-gradient(180deg, rgba(255,255,255,.95), rgba(250,252,255,.8));
  box-shadow:0 10px 20px rgba(34,84,152,.06);overflow:hidden
}
.nt-metric-card::before{content:"";position:absolute;right:-24px;top:-24px;width:80px;height:80px;border-radius:50%;background:color-mix(in srgb, var(--nt-brand) 6%, transparent)}
.nt-metric-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px;color:inherit;font:inherit;letter-spacing:normal;text-transform:none}
.nt-metric-label{display:flex;align-items:center;gap:9px;font-weight:800;font-size:12px;letter-spacing:.03em;text-transform:uppercase;color:var(--nt-text)}
.nt-metric-icon{width:32px;height:32px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(135deg,#eff8ff,#f5f2ff);border:1px solid var(--nt-line-2)}
.nt-metric-tag{font-size:10.5px;font-weight:800;padding:5px 8px;border-radius:999px;background:#f6fbff;border:1px solid var(--nt-line-2);color:#56718f}
.nt-metric-card b{color:#061936;display:block;font-size:38px;line-height:1;letter-spacing:-.04em;font-weight:800}
.nt-metric-card .nt-metric-unit{font-size:14px;color:#5e7290;font-weight:700;margin-left:5px}
.nt-metric-foot{margin-top:7px;font-size:12px;color:var(--nt-text-soft);min-height:18px;font-weight:600}
.nt-metric-foot.is-up{color:var(--nt-success);font-weight:800}
.nt-metric-foot.is-down{color:var(--nt-danger);font-weight:800}
.nt-metric-sub{color:var(--nt-text-soft);display:block;font-size:12px;margin-top:7px}

/* ---------- gauge ---------- */
.nt-gauge-area{display:grid;grid-template-columns:1fr;align-items:center}
.nt-gauge-shell{
  position:relative;min-height:400px;display:grid;place-items:center;border-radius:26px;border:1px solid var(--nt-line);
  background:
    radial-gradient(circle at 50% 42%, color-mix(in srgb, var(--nt-brand) 8%, transparent), transparent 28%),
    radial-gradient(circle at 50% 88%, color-mix(in srgb, var(--nt-accent) 6%, transparent), transparent 38%),
    linear-gradient(180deg,#ffffff 0%, #fbfdff 100%);
  overflow:hidden
}
.nt-gauge-shell::before{content:"";position:absolute;inset:16px;border-radius:22px;border:1px dashed rgba(212,226,245,.7);pointer-events:none}
.nt-gauge-svg{width:min(100%,560px);height:auto;display:block;overflow:visible}
.nt-gauge-track{fill:none;stroke:#ecf3fb;stroke-width:20;stroke-linecap:round}
.nt-gauge-glow{fill:none;stroke:url(#ntGaugeGlow);stroke-width:28;opacity:.28;filter:blur(9px)}
.nt-gauge-progress{fill:none;stroke:url(#ntGaugeGradient);stroke-width:20;stroke-linecap:round;transition:stroke-dashoffset .3s ease}
.nt-gauge-inner-ring{fill:none;stroke:rgba(236,243,251,.95);stroke-width:1.6}
.nt-tick{stroke:#d9e6f4;stroke-width:1.6}
.nt-tick.is-minor{opacity:.65;stroke-width:1.1}
.nt-glabel{fill:#223b63;font-size:13px;font-weight:700;text-anchor:middle}
.nt-needle{transform-origin:300px 300px;transition:transform .32s cubic-bezier(.2,.86,.34,1)}
.nt-needle-outer{fill:#0d2f63;filter:drop-shadow(0 8px 14px rgba(10,41,84,.18))}
.nt-needle-inner{fill:#fff}
.nt-gauge-overlay{position:absolute;left:0;right:0;bottom:22px;display:grid;place-items:center;text-align:center;padding:0 16px;pointer-events:none}
.nt-phase-pill{
  display:inline-flex;align-items:center;gap:8px;padding:7px 11px;border-radius:999px;background:rgba(255,255,255,.92);
  border:1px solid var(--nt-line);box-shadow:0 8px 18px rgba(45,95,170,.06);font-size:11px;font-weight:800;color:#214a74
}
.nt-phase-dot{width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--nt-brand-2),var(--nt-accent))}
.nt-gauge-value{
  margin-top:12px;font-size:44px;line-height:1;letter-spacing:-.05em;font-weight:800;color:#051632;
  padding:12px 20px;border-radius:22px;background:rgba(255,255,255,.93);border:1px solid var(--nt-line);
  box-shadow:0 10px 24px rgba(45,95,170,.08);min-width:180px
}
.nt-gauge-meta{margin-top:10px;display:flex;justify-content:center;gap:8px;flex-wrap:wrap}
.nt-meta-pill{padding:8px 11px;border-radius:14px;background:rgba(255,255,255,.92);border:1px solid var(--nt-line);font-size:12px;font-weight:700;color:#49607f}
.nt-meta-pill b{color:#0e264d}

.nt-insights-row{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;margin-top:14px}
.nt-floating-card{padding:16px 17px 15px;border-radius:20px}
.nt-floating-card h3{margin:0 0 10px;font-size:13px;display:flex;align-items:center;justify-content:space-between;gap:8px;font-weight:700}
.nt-floating-card .nt-score{font-size:28px;font-weight:800;letter-spacing:-.04em}
.nt-score-note{font-size:11.5px;color:var(--nt-text-soft);line-height:1.55;margin-top:4px}
.nt-badge-green,.nt-badge-purple,.nt-badge-orange,.nt-badge-red{padding:5px 8px;border-radius:999px;font-size:10.5px;font-weight:800}
.nt-badge-green{background:#eafcf4;color:#149b6a}
.nt-badge-purple{background:#f3ecff;color:#7a39ff}
.nt-badge-orange{background:#fff5e5;color:#d28a00}
.nt-badge-red{background:#ffeef1;color:#e2384f}

/* ---------- live chart ---------- */
.nt-chart-panel{margin-top:14px;padding:15px 16px;border:1px solid var(--nt-line);border-radius:22px;background:linear-gradient(180deg,#fff,#fbfdff)}
.nt-chart-head{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:9px}
.nt-chart-head strong{font-size:14px}
.nt-chart-legend{display:flex;gap:18px;flex-wrap:wrap;color:var(--nt-text-soft);font-size:11.5px;font-weight:700}
.nt-legend-item{display:flex;align-items:center;gap:7px}
.nt-legend-line{display:inline-block;width:14px;height:3px;border-radius:999px}
.nt-legend-line.is-primary{background:var(--nt-brand-2)}
.nt-legend-line.is-secondary{background:var(--nt-accent)}
.nt-chart-canvas{height:140px}
.nt-chart-canvas canvas{width:100%;height:100%;display:block}

/* ---------- right sidebar: connection details / tips / share ---------- */
.nt-detail-head{display:flex;justify-content:space-between;gap:8px;align-items:center;margin-bottom:13px}
.nt-detail-head h3{margin:0;font-size:16px}
.nt-detail-chip{padding:6px 9px;border-radius:999px;background:#eef7ff;border:1px solid var(--nt-line-2);font-size:10.5px;font-weight:800;color:var(--nt-brand)}
.nt-detail-list{display:grid;gap:10px}
.nt-detail-row{display:flex;flex-direction:column;gap:9px;padding:12px;border-radius:16px;background:rgba(255,255,255,.76);border:1px solid var(--nt-line)}
.nt-detail-row-top{display:grid;grid-template-columns:34px 1fr;gap:10px;align-items:center}
.nt-detail-ico{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(135deg,#eff8ff,#f8f6ff);color:var(--nt-brand);box-shadow:inset 0 0 0 1px rgba(255,255,255,.5)}
.nt-detail-label strong{display:block;font-size:12.5px}
.nt-detail-label small{display:block;font-size:11px;color:#667996;margin-top:2px}
.nt-detail-value{
  display:block;width:calc(100% - 44px);margin-left:44px;padding:0;
  background:none;border:0;
  font-size:16.5px;font-weight:800;letter-spacing:-.02em;
  text-align:left;white-space:normal;overflow-wrap:anywhere;word-break:break-word;line-height:1.35
}
.nt-detail-value.is-muted{color:#9aa9c0 !important;font-weight:700}

.nt-detail-row:nth-child(1) .nt-detail-ico{background:linear-gradient(135deg,#e3edff,#eef6ff);color:#2563ff}
.nt-detail-row:nth-child(1) .nt-detail-value{color:#2563ff}
.nt-detail-row:nth-child(2) .nt-detail-ico{background:linear-gradient(135deg,#f2e8ff,#f8f0ff);color:#8a3ffc}
.nt-detail-row:nth-child(2) .nt-detail-value{color:#8a3ffc}
.nt-detail-row:nth-child(3) .nt-detail-ico{background:linear-gradient(135deg,#e2fbf1,#eefdf6);color:#0da678}
.nt-detail-row:nth-child(3) .nt-detail-value{color:#0da678}
.nt-detail-row:nth-child(4) .nt-detail-ico{background:linear-gradient(135deg,#fff1de,#fff8ee);color:#e08a00}
.nt-detail-row:nth-child(4) .nt-detail-value{color:#d98200}
.nt-detail-row:nth-child(5) .nt-detail-ico{background:linear-gradient(135deg,#ffe6ee,#fff0f5);color:#e2447c}
.nt-detail-row:nth-child(5) .nt-detail-value{color:#e2447c}
.nt-detail-row:nth-child(6) .nt-detail-ico{background:linear-gradient(135deg,#dff8ff,#eefcff);color:#0aa8d6}
.nt-detail-row:nth-child(6) .nt-detail-value{color:#0aa8d6}

.nt-tips-list{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.nt-tips-list li{display:grid;grid-template-columns:28px 1fr;gap:9px;align-items:start;padding:9px 0;border-bottom:1px solid rgba(227,236,247,.96)}
.nt-tips-list li:last-child{border-bottom:0;padding-bottom:0}
.nt-tip-dot{width:28px;height:28px;border-radius:9px;display:grid;place-items:center;background:#eef7ff;color:var(--nt-brand);font-weight:900;font-size:12.5px}
.nt-tips-list li:nth-child(1) .nt-tip-dot{background:#e3edff;color:#2563ff}
.nt-tips-list li:nth-child(2) .nt-tip-dot{background:#f2e8ff;color:#8a3ffc}
.nt-tips-list li:nth-child(3) .nt-tip-dot{background:#e2fbf1;color:#0da678}
.nt-tips-list strong{display:block;font-size:12.5px}
.nt-tips-list span{display:block;font-size:11.5px;color:#627593;line-height:1.5;margin-top:3px}

.nt-share-row{display:flex;gap:9px}
.nt-share-btn{
  width:42px;height:42px;border-radius:14px;border:1px solid var(--nt-line);cursor:pointer;
  display:grid;place-items:center;background:linear-gradient(180deg,#ffffff,#fbfdff);box-shadow:0 8px 18px rgba(45,95,170,.06);
  font-size:16px;font-weight:900;transition:.15s ease
}
.nt-share-btn:hover{transform:translateY(-1px)}
.nt-share-btn.is-copy{color:#325375}.nt-share-btn.is-x{color:#0ea2ff}.nt-share-btn.is-facebook{color:#1264dd}.nt-share-btn.is-whatsapp{color:#10b958}
.nt-share-text{font-size:11.5px;color:#617592;line-height:1.6;margin:0 0 13px}

/* ---------- advanced details ---------- */
.nt-advanced{margin-top:14px;padding:4px 18px 18px}
.nt-advanced summary{color:var(--nt-text);cursor:pointer;font:800 13px Inter,sans-serif;list-style:none;padding:14px 0}
.nt-advanced summary::-webkit-details-marker{display:none}
.nt-advanced summary::before{color:var(--nt-brand);content:"+ ";font-weight:800}
.nt-advanced[open] summary::before{content:"\2212 "}
.nt-advanced-grid{display:grid;gap:1px;grid-template-columns:repeat(3,1fr);margin-bottom:10px;overflow:hidden;border-radius:14px}
.nt-info-cell{background:#f6faff;border:1px solid var(--nt-line);display:flex;flex-direction:column;gap:4px;margin:-1px -1px 0 0;padding:11px 13px}
.nt-info-cell b{color:var(--nt-muted);font:700 10px Inter,sans-serif;letter-spacing:.05em;text-transform:uppercase}
.nt-info-cell span{color:var(--nt-text);font-size:12.5px;font-weight:600;overflow-wrap:anywhere}
.nt-info-cell span.is-muted{color:#9aa9c0;font-weight:600}
.nt-ua{color:var(--nt-muted);font-size:11px;line-height:1.6;margin:0;overflow-wrap:anywhere}
.nt-ua b{color:var(--nt-text)}
@media(max-width:760px){.nt-advanced-grid{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.nt-advanced-grid{grid-template-columns:1fr}}

/* ---------- bottom feature strip ---------- */
.nt-feature-strip{margin-top:16px;display:grid;grid-template-columns:repeat(4,1fr);gap:13px}
.nt-strip-card{padding:15px 17px;display:flex;align-items:center;gap:11px;border-radius:20px}
.nt-strip-icon{width:40px;height:40px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,#eef8ff,#f6f2ff);color:var(--nt-brand)}
.nt-strip-card strong{display:block;font-size:13px}
.nt-strip-card span{display:block;font-size:11.5px;color:#617391;margin-top:3px}
.nt-feature-strip .nt-strip-card:nth-child(1) .nt-strip-icon{background:linear-gradient(135deg,#e3edff,#eef6ff);color:#2563ff}
.nt-feature-strip .nt-strip-card:nth-child(2) .nt-strip-icon{background:linear-gradient(135deg,#e2fbf1,#eefdf6);color:#0da678}
.nt-feature-strip .nt-strip-card:nth-child(3) .nt-strip-icon{background:linear-gradient(135deg,#fff1de,#fff8ee);color:#e08a00}
.nt-feature-strip .nt-strip-card:nth-child(4) .nt-strip-icon{background:linear-gradient(135deg,#f2e8ff,#f8f0ff);color:#8a3ffc}

/* ---------- modals ---------- */
.nt-modal-backdrop{position:fixed;inset:0;background:rgba(8,21,48,.28);backdrop-filter:blur(6px);display:none;align-items:center;justify-content:center;padding:18px;z-index:70}
.nt-modal-backdrop.is-open{display:flex}
.nt-modal{width:min(600px,100%);max-height:84vh;overflow:auto;border-radius:26px;border:1px solid var(--nt-line);background:rgba(255,255,255,.98);box-shadow:0 26px 80px rgba(8,34,76,.24);padding:20px;font-family:Inter,sans-serif;color:var(--nt-text)}
.nt-modal-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}
.nt-modal-head h2{margin:0;font-size:21px;letter-spacing:-.03em}
.nt-close-btn{width:38px;height:38px;border-radius:13px;border:1px solid var(--nt-line);background:#f6fbff;cursor:pointer;font-size:18px;color:var(--nt-text)}
.nt-history-empty{padding:28px 16px;text-align:center;color:#677a96}
.nt-history-table{width:100%;border-collapse:collapse;font-size:12.5px}
.nt-history-table th,.nt-history-table td{padding:11px 9px;border-bottom:1px solid rgba(229,236,246,.96);text-align:right}
.nt-history-table th:first-child,.nt-history-table td:first-child{text-align:left}
.nt-clear-history-btn{margin-top:14px;border:1px solid var(--nt-line);background:#fff;border-radius:13px;padding:10px 14px;cursor:pointer;font-weight:700;color:var(--nt-text)}
.nt-settings-row{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:15px 0;border-bottom:1px solid rgba(229,236,246,.96)}
.nt-settings-row:last-child{border-bottom:0}
.nt-settings-row strong{display:block;font-size:14px}
.nt-settings-row span{display:block;font-size:11.5px;color:#647897;margin-top:3px;line-height:1.5}
.nt-settings-note{font-size:12px;color:var(--nt-text-soft);line-height:1.7;margin:14px 0 0}
.nt-toggle{width:48px;height:28px;border:0;border-radius:999px;background:#d7e3f0;padding:4px;cursor:pointer;transition:.2s;flex:0 0 auto}
.nt-toggle::after{content:"";display:block;width:20px;height:20px;border-radius:50%;background:#fff;transition:.2s;box-shadow:0 2px 8px rgba(13,40,83,.15)}
.nt-toggle.is-on{background:var(--nt-brand)}
.nt-toggle.is-on::after{transform:translateX(20px)}

/* ---------- toast ---------- */
.nt-toast{
  position:fixed;left:50%;bottom:26px;transform:translate(-50%,16px);opacity:0;pointer-events:none;transition:.25s;
  background:#081d3f;color:#fff;padding:11px 15px;border-radius:13px;font-size:12.5px;box-shadow:0 14px 32px rgba(7,25,54,.24);
  z-index:90;font-family:Inter,sans-serif
}
.nt-toast.is-show{opacity:1;transform:translate(-50%,0)}

/* ---------- responsive ---------- */
@media(max-width:1120px){
  .nt-dashboard{grid-template-columns:220px minmax(0,1fr)}
  .nt-sidebar-right{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr)}
  .nt-feature-strip{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:980px){
  .nt-hero{grid-template-columns:1fr}
  .nt-gauge-shell{min-height:360px}
  .nt-hero h1{font-size:32px}
  .nt-insights-row{grid-template-columns:1fr 1fr}
}
@media(max-width:860px){
  .nt-dashboard{grid-template-columns:1fr}
  .nt-sidebar-left{display:grid;grid-template-columns:repeat(2,1fr)}
  .nt-privacy-box{grid-column:1/-1}
  .nt-metric-row{grid-template-columns:1fr}
  .nt-metric-row.is-four{grid-template-columns:1fr 1fr}
  .nt-sidebar-right{grid-template-columns:1fr 1fr}
  .nt-quick-start{grid-template-columns:1fr}
  .nt-quick-start-actions{justify-content:center}
}
@media(max-width:640px){
  .net-test-page{border-radius:16px;width:min(calc(100% - 24px),1280px)}
  .nt-body{padding:14px}
  .nt-hero-main{padding:18px}
  .nt-hero h1{font-size:27px}
  .nt-sidebar-left,.nt-sidebar-right{grid-template-columns:1fr}
  .nt-metric-row.is-four{grid-template-columns:1fr}
  .nt-metric-card b{font-size:30px}
  .nt-gauge-shell{min-height:280px}
  .nt-gauge-value{font-size:36px;min-width:150px;padding:10px 16px}
  .nt-chart-canvas{height:110px}
  .nt-start-btn{width:104px;height:104px;font-size:15px}
  .nt-feature-strip{grid-template-columns:1fr}
  .nt-insights-row{grid-template-columns:1fr}
}