@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#06B6D4;--primary-light:#22D3EE;--primary-glow:rgba(6,182,212,.18);
  --accent:#67E8F9;--green:#34D399;--red:#EF4444;--yellow:#FBBF24;
  --bg:#0F172A;--bg2:#1E293B;--bg-card:rgba(30,41,59,.85);
  --text:#F1F5F9;--text2:#94A3B8;--text3:#64748B;
  --border:rgba(148,163,184,.1);--radius:12px;--radius-sm:8px;
  --font:'Inter',system-ui,sans-serif;--mono:'JetBrains Mono',monospace;
  --tr:.25s ease;
}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh}
body::before{content:'';position:fixed;inset:0;background:radial-gradient(ellipse at 50% 0%,rgba(6,182,212,.04) 0%,transparent 50%);pointer-events:none}
.app{position:relative;z-index:1;max-width:800px;margin:0 auto;padding:24px 20px 60px}
.hdr{text-align:center;padding:40px 0 24px}
.hdr__icon{display:inline-flex;align-items:center;justify-content:center;width:64px;height:64px;border-radius:var(--radius);background:linear-gradient(135deg,var(--primary),#0891B2);font-size:32px;margin-bottom:16px;box-shadow:0 8px 30px var(--primary-glow);animation:fl 3s ease-in-out infinite}
@keyframes fl{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}
.hdr h1{font-size:1.9rem;font-weight:800;background:linear-gradient(135deg,var(--text),var(--primary-light));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hdr p{color:var(--text2);font-size:.95rem;margin:8px auto 0}
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;backdrop-filter:blur(16px);margin-bottom:12px}
.card-title{font-size:.9rem;font-weight:700;margin-bottom:10px}
.input-row{display:flex;gap:8px}
.input{flex:1;padding:10px 12px;font-family:var(--mono);font-size:.82rem;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);outline:none}
.input:focus{border-color:var(--primary)}
.btn{padding:9px 16px;font-family:var(--font);font-size:.82rem;font-weight:600;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:var(--tr)}
.btn-sm{padding:6px 12px;font-size:.75rem}
.btn-primary{background:var(--primary);color:#0F172A}.btn-primary:hover{background:#0891B2}
.btn-outline{background:transparent;color:var(--text2);border:1px solid var(--border)}.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
/* Stats */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:12px}
.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px;text-align:center;backdrop-filter:blur(16px)}
.stat-num{font-size:1.3rem;font-weight:800;margin-bottom:2px}
.stat-num.fast{color:var(--green)}.stat-num.med{color:var(--yellow)}.stat-num.slow{color:var(--red)}
.stat-label{font-size:.66rem;font-weight:600;color:var(--text3);text-transform:uppercase;letter-spacing:.5px}
/* Latency bar */
.lat-item{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.lat-region{width:100px;font-size:.75rem;font-weight:600;flex-shrink:0}
.lat-bar-bg{flex:1;height:22px;background:var(--bg);border-radius:4px;overflow:hidden;position:relative}
.lat-bar{height:100%;border-radius:4px;transition:width .5s ease;display:flex;align-items:center;padding-left:6px;font-size:.68rem;font-weight:700;color:#fff}
.lat-bar.fast{background:linear-gradient(90deg,var(--green),#10B981)}
.lat-bar.med{background:linear-gradient(90deg,var(--yellow),#F59E0B)}
.lat-bar.slow{background:linear-gradient(90deg,var(--red),#DC2626)}
.lat-ms{width:60px;text-align:right;font-family:var(--mono);font-size:.75rem;color:var(--text2);flex-shrink:0}
.lat-cache{font-size:.64rem;padding:2px 6px;border-radius:4px;font-weight:700;flex-shrink:0}
.cache-hit{background:rgba(52,211,153,.12);color:var(--green)}
.cache-miss{background:rgba(239,68,68,.12);color:var(--red)}
/* Headers */
.hdr-item{display:flex;gap:8px;padding:4px 0;font-size:.78rem;border-bottom:1px solid var(--border)}
.hdr-key{font-weight:700;color:var(--text3);width:160px;flex-shrink:0;font-family:var(--mono)}
.hdr-val{color:var(--primary-light);font-family:var(--mono);word-break:break-all}
/* History */
.hist-item{display:flex;gap:10px;align-items:center;padding:6px 8px;background:var(--bg);border-radius:var(--radius-sm);margin-bottom:3px;font-size:.75rem}
.hist-url{flex:1;font-family:var(--mono);color:var(--primary-light);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hist-time{font-weight:700;color:var(--text2)}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(80px);padding:10px 20px;background:var(--bg2);border:1px solid var(--primary);border-radius:var(--radius-sm);color:var(--text);font-size:.82rem;font-weight:500;z-index:1000;opacity:0;transition:all .3s ease;pointer-events:none}
.toast.visible{opacity:1;transform:translateX(-50%) translateY(0)}
@media(max-width:640px){.stats-row{grid-template-columns:1fr 1fr}.app{padding:16px 12px 48px}.hdr h1{font-size:1.4rem}.input-row{flex-direction:column}.lat-region{width:70px}}
::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:var(--bg2);border-radius:3px}
::selection{background:var(--primary);color:var(--bg)}