:root{
  --bg-0:#04050a;
  --bg-1:#0a0d18;
  --ink-0:#f5f7fb;
  --ink-1:#a6adc0;
  --ink-2:#666f85;
  --cyan:#35e0c9;
  --cyan-dim:#1f8f81;
  --blue:#4fa8f0;
  --violet:#8677f2;
  --gold:#e8c07a;

  --glass:rgba(255,255,255,0.035);
  --glass-hi:rgba(255,255,255,0.07);
  --glass-border:rgba(255,255,255,0.09);
  --glass-border-hi:rgba(255,255,255,0.20);
  --hairline:rgba(255,255,255,0.07);

  --shadow-soft: 0 1px 0 rgba(255,255,255,0.05) inset, 0 20px 60px -20px rgba(0,0,0,0.7);
  --radius-xl:30px;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:13px;
}

*{box-sizing:border-box;}
html,body{height:100%;}
body{
  margin:0;
  background:
    radial-gradient(130% 80% at 50% -18%, #0f1a35 0%, var(--bg-0) 52%),
    var(--bg-0);
  color:var(--ink-0);
  font-family:'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
  min-height:100vh;
  letter-spacing:-0.005em;
}

h1,h2,h3,.brand-name,.go-btn span,.phase-value,.promo-text strong,.stat-label{
  font-family:'Syne', 'Inter', sans-serif;
}
.stat-num,.phase-value,.isp-sub,.meta-pill,.ping-num{
  font-family:'JetBrains Mono','Inter',monospace;
}

/* ---------- fine grain texture for material depth ---------- */
.noise{
  position:fixed; inset:0; z-index:2; pointer-events:none;
  opacity:0.035; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- background ambience ---------- */
.bg-orbs{position:fixed; inset:0; z-index:0; pointer-events:none; overflow:hidden;}
.orb{position:absolute; border-radius:50%; filter:blur(90px);}
.orb-a{width:420px; height:420px; background:radial-gradient(circle,var(--cyan),transparent 70%); opacity:.16; top:-160px; left:-140px;}
.orb-b{width:460px; height:460px; background:radial-gradient(circle,var(--violet),transparent 70%); opacity:.14; bottom:-200px; right:-160px;}
.orb-c{width:300px; height:300px; background:radial-gradient(circle,var(--blue),transparent 70%); opacity:.10; top:38%; right:-140px;}

.app{position:relative; z-index:1; max-width:520px; margin:0 auto; padding:16px 16px 44px; min-height:100vh; display:flex; flex-direction:column;}

/* ---------- glass base ---------- */
.glass{
  background:
    linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0) 40%),
    var(--glass);
  border:1px solid var(--glass-border);
  backdrop-filter: blur(28px) saturate(170%);
  -webkit-backdrop-filter: blur(28px) saturate(170%);
  box-shadow: var(--shadow-soft);
}

/* ---------- top bar ---------- */
.topbar{
  display:flex; align-items:center; justify-content:space-between;
  padding:11px 14px 11px 12px;
  border-radius: 20px;
  position:sticky; top:10px; z-index:20;
}
.brand{display:flex; align-items:center; gap:11px;}
.brand-mark{
  width:36px; height:36px; border-radius:11px;
  display:flex; align-items:center; justify-content:center;
  font-family:'Syne', sans-serif; font-weight:800; font-size:.82rem; letter-spacing:0.02em;
  color:#08130f;
  background:linear-gradient(150deg, var(--cyan) 0%, var(--blue) 100%);
  box-shadow:0 6px 18px -4px rgba(53,224,201,0.55), inset 0 1px 1px rgba(255,255,255,0.6);
}
.brand-name{font-size:1.06rem; font-weight:700; letter-spacing:-0.01em;}
.brand-thin{font-weight:500; color:var(--ink-1); margin-left:2px;}

.icon-btn{
  width:38px; height:38px; border-radius:13px;
  background:var(--glass-hi);
  border:1px solid var(--glass-border);
  color:var(--ink-0);
  display:flex; align-items:center; justify-content:center;
  cursor:pointer;
  transition: background .2s ease, transform .15s ease;
}
.icon-btn:active{transform:scale(0.92); background:var(--glass-border-hi);}

/* ---------- drawer ---------- */
.drawer{
  position:fixed; top:0; right:0; height:100%; width:min(76vw,290px);
  transform:translateX(105%);
  transition:transform .4s cubic-bezier(.19,1,.22,1);
  z-index:50;
  display:flex; flex-direction:column; gap:3px;
  padding:78px 20px 26px;
  border-radius: 26px 0 0 26px;
}
.drawer.open{transform:translateX(0);}
.drawer-link,.drawer a{
  display:flex; align-items:center; gap:11px;
  color:var(--ink-1); text-decoration:none; font-weight:600; font-size:.92rem;
  padding:12px 12px; border-radius:12px;
  transition:background .2s ease, color .2s ease;
}
.drawer-link svg,.drawer a svg{opacity:.8; flex-shrink:0;}
.drawer-link.active{color:var(--ink-0); background:var(--glass-hi);}
.drawer-link.active svg{color:var(--cyan); opacity:1;}
.drawer a:hover{background:var(--glass-hi); color:var(--ink-0);}
.drawer-foot{margin-top:auto; color:var(--ink-2); font-size:.75rem; padding:0 12px; letter-spacing:.02em;}

/* ---------- promo ---------- */
.promo{
  margin-top:14px; padding:20px 20px 18px; border-radius: var(--radius-xl);
  text-align:center;
}
.promo-text{margin:0 0 14px; color:var(--ink-1); font-size:.9rem; line-height:1.55;}
.promo-text strong{color:var(--ink-0); font-weight:700;}
.promo-badges{display:flex; gap:8px; justify-content:center; flex-wrap:wrap;}
.badge{
  display:inline-flex; align-items:center; gap:6px;
  font-size:.71rem; font-weight:600; padding:7px 12px 7px 10px; border-radius:100px;
  background:var(--glass-hi); border:1px solid var(--glass-border);
  color:var(--ink-1); letter-spacing:.01em;
}
.badge svg{color:var(--cyan); flex-shrink:0;}

/* ---------- gauge ---------- */
.gauge-wrap{
  position:relative;
  display:flex; align-items:center; justify-content:center;
  margin:26px auto 4px;
  width:100%;
  aspect-ratio:1/1;
  max-width:400px;
}
#gauge{width:100%; height:100%;}

.go-btn{
  position:absolute;
  width:34%; height:34%;
  border-radius:50%;
  border:none;
  cursor:pointer;
  background:
    radial-gradient(120% 120% at 32% 22%, rgba(255,255,255,0.14), rgba(255,255,255,0) 55%),
    linear-gradient(165deg, rgba(24,31,52,0.92), rgba(6,8,16,0.95));
  border:1px solid var(--glass-border-hi);
  box-shadow:
    0 0 0 1px rgba(53,224,201,0.10),
    0 16px 36px -8px rgba(0,0,0,0.65),
    inset 0 1px 1px rgba(255,255,255,0.22),
    inset 0 -10px 22px rgba(0,0,0,0.4);
  backdrop-filter: blur(20px);
  color:var(--ink-0);
  display:flex; align-items:center; justify-content:center;
  transition: transform .15s ease, box-shadow .35s ease;
  animation: breathe 3.2s ease-in-out infinite;
}
@keyframes breathe{
  0%,100%{ box-shadow:
    0 0 0 1px rgba(53,224,201,0.10),
    0 16px 36px -8px rgba(0,0,0,0.65),
    inset 0 1px 1px rgba(255,255,255,0.22),
    inset 0 -10px 22px rgba(0,0,0,0.4); }
  50%{ box-shadow:
    0 0 0 1px rgba(53,224,201,0.28),
    0 16px 40px -6px rgba(53,224,201,0.18),
    inset 0 1px 1px rgba(255,255,255,0.26),
    inset 0 -10px 22px rgba(0,0,0,0.4); }
}
.go-btn span{font-size:1.4rem; font-weight:800; letter-spacing:0.08em; font-family:'Syne',sans-serif;}
.go-btn:active{transform:scale(0.94);}
.go-btn.testing{
  animation:none;
  background:
    radial-gradient(120% 120% at 32% 22%, rgba(53,224,201,0.22), rgba(255,255,255,0) 55%),
    linear-gradient(165deg, rgba(24,31,52,0.92), rgba(6,8,16,0.95));
  box-shadow:
    0 0 0 1px rgba(53,224,201,0.4),
    0 0 46px rgba(53,224,201,0.28),
    inset 0 1px 1px rgba(255,255,255,0.2);
}
.go-btn.testing span{font-size:.86rem; letter-spacing:0.04em;}

.gauge-readout{
  position:absolute; bottom:4%; left:0; right:0;
  text-align:center; pointer-events:none;
}
.phase-label{
  font-size:.68rem; letter-spacing:0.22em; color:var(--cyan);
  font-weight:700; margin-bottom:3px;
}
.phase-value{font-size:1.15rem; font-weight:700; color:var(--ink-0); font-family:'JetBrains Mono',monospace;}
.phase-unit{font-size:.64rem; color:var(--ink-2); letter-spacing:.1em; text-transform:uppercase;}

/* ---------- ISP row ---------- */
.isp-row{
  display:flex; align-items:center; gap:14px;
  padding:15px 18px; border-radius:var(--radius-lg);
  margin-top:12px;
}
.isp-icon{
  width:40px; height:40px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  background:var(--glass-hi); color:var(--cyan);
  border:1px solid var(--glass-border);
  flex-shrink:0;
}
.isp-info{flex:1; min-width:0;}
.isp-name{font-weight:700; font-size:.94rem; white-space:nowrap; overflow:hidden; text-overflow:ellipsis;}
.isp-sub{font-size:.74rem; color:var(--ink-2); margin-top:3px; letter-spacing:0;}
.isp-arrow{color:var(--cyan); flex-shrink:0;}

/* ---------- results ---------- */
.results{
  display:grid; grid-template-columns:repeat(2,1fr); gap:11px;
  margin-top:16px;
}
.stat-card{
  border-radius:var(--radius-md); padding:19px 14px 16px;
  text-align:center;
  transition: opacity .35s ease;
}
.stat-icon{
  width:32px; height:32px; margin:0 auto 10px;
  border-radius:10px;
  display:flex; align-items:center; justify-content:center;
  background:var(--glass-hi); border:1px solid var(--glass-border);
  color:var(--cyan);
}
.stat-num{font-size:1.65rem; font-weight:700; letter-spacing:-0.02em;}
.stat-unit{font-size:.65rem; color:var(--ink-2); margin-top:2px; letter-spacing:.03em;}
.stat-label{font-size:.7rem; color:var(--ink-1); margin-top:8px; letter-spacing:.06em; text-transform:uppercase; font-weight:600;}

/* ---------- meta ---------- */
.meta-row{display:flex; gap:10px; margin-top:12px;}
.meta-pill{
  flex:1; padding:12px 14px; border-radius:100px;
  font-size:.76rem; color:var(--ink-1); text-align:center;
  overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
  letter-spacing:0;
}
.share-btn{
  display:flex; align-items:center; justify-content:center; gap:7px;
  color:var(--cyan); font-weight:700; cursor:pointer; border:1px solid var(--glass-border);
  font-family:'Inter',sans-serif; letter-spacing:0; text-transform:none;
  transition: background .2s ease, transform .15s ease;
}
.share-btn:active{transform:scale(.97); background:var(--glass-hi);}

/* ---------- download result cta ---------- */
.result-cta{margin-top:14px;}
.download-result-btn{
  width:100%;
  display:flex; align-items:center; justify-content:center; gap:9px;
  padding:15px 18px;
  border-radius:100px;
  border:1px solid rgba(53,224,201,0.35);
  background:
    linear-gradient(180deg, rgba(53,224,201,0.16), rgba(53,224,201,0.05)),
    var(--glass);
  backdrop-filter: blur(24px) saturate(170%);
  -webkit-backdrop-filter: blur(24px) saturate(170%);
  color:var(--cyan);
  font-family:'Syne', sans-serif; font-weight:700; font-size:.88rem; letter-spacing:.01em;
  cursor:pointer;
  box-shadow: 0 12px 30px -10px rgba(53,224,201,0.35), inset 0 1px 1px rgba(255,255,255,0.12);
  transition: transform .15s ease, box-shadow .25s ease, opacity .2s ease;
}
.download-result-btn:active{transform:scale(0.97);}
.download-result-btn:disabled{opacity:.55; cursor:default; transform:none;}
.download-result-btn svg{flex-shrink:0;}

/* ---------- how it works ---------- */
.howitworks{
  margin-top:20px; padding:22px 20px; border-radius:var(--radius-xl);
}
.howitworks h3{margin:0 0 10px; font-size:1.02rem; font-weight:700; letter-spacing:-0.01em;}
.howitworks p{margin:0; font-size:.85rem; line-height:1.65; color:var(--ink-1);}
.howitworks strong{color:var(--ink-0); font-weight:600;}

/* ---------- footer ---------- */
.app-footer{
  margin-top:30px; text-align:center; display:flex; flex-direction:column; gap:3px;
  color:var(--ink-2); font-size:.74rem;
}
.footer-mark{letter-spacing:.05em;}
.footer-link{color:var(--cyan); text-decoration:none; font-weight:600;}

/* ---------- misc ---------- */
::selection{background:rgba(53,224,201,0.28);}
a{-webkit-tap-highlight-color:transparent;}

@media (max-width:380px){
  .stat-num{font-size:1.4rem;}
  .brand-name{font-size:.96rem;}
}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important; transition-duration:0.001ms !important;}
}