/* SpeedCheck — MIT licensed. Glassmorphism / liquid-glass theme. */

:root {
  --bg: #0b0f1a;
  --text: #e9edf5;
  --text-dim: #9aa3b8;
  --accent: #2f6fed;
  --accent-2: #6a3ff5;
  --ping: #ffb340;
  --jitter: #ff7b54;
  --download: #35c3f0;
  --upload: #b06ef7;
  --border-glass: rgba(255, 255, 255, 0.12);
  --fill-glass: rgba(255, 255, 255, 0.055);
  --fill-glass-strong: rgba(255, 255, 255, 0.09);
  --radius: 18px;
  font-size: 16px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* ---------- liquid background ---------- */
.bg-blobs {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(560px 400px at 18% 8%, rgba(47, 111, 237, 0.22), transparent 65%),
    radial-gradient(640px 480px at 85% 20%, rgba(106, 63, 245, 0.16), transparent 65%),
    radial-gradient(700px 520px at 50% 110%, rgba(53, 195, 240, 0.10), transparent 60%),
    var(--bg);
}
.bg-blobs::before,
.bg-blobs::after {
  content: "";
  position: absolute;
  width: 46vmax;
  height: 46vmax;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.35;
  will-change: transform;
}
.bg-blobs::before {
  background: radial-gradient(circle at 30% 30%, #2f6fed, transparent 62%);
  top: -18vmax;
  left: -12vmax;
  animation: drift-a 26s ease-in-out infinite alternate;
}
.bg-blobs::after {
  background: radial-gradient(circle at 60% 60%, #6a3ff5, transparent 62%);
  bottom: -20vmax;
  right: -14vmax;
  animation: drift-b 32s ease-in-out infinite alternate;
}
@keyframes drift-a { to { transform: translate(9vmax, 7vmax) scale(1.12); } }
@keyframes drift-b { to { transform: translate(-8vmax, -6vmax) scale(1.08); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---------- glass primitives ---------- */
.glass {
  background: var(--fill-glass);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  backdrop-filter: blur(18px) saturate(160%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.10);
}
.glass-bar {
  background: rgba(255, 255, 255, 0.045);
  -webkit-backdrop-filter: blur(20px) saturate(170%);
  backdrop-filter: blur(20px) saturate(170%);
  border-bottom: 1px solid var(--border-glass);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.glass-input {
  background: var(--fill-glass);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  backdrop-filter: blur(14px) saturate(150%);
  color: var(--text);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  padding: 0.45rem 0.9rem;
  font-size: 0.85rem;
  cursor: pointer;
}
.glass-input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.glass-input option { background: #131829; color: var(--text); }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0.8rem 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { display: flex; align-items: center; }
.logo-img { display: block; height: 42px; width: auto; }
.header-nav { display: flex; gap: 1.4rem; }
.nav-link {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--text); }
.nav-link.active { color: var(--text); border-bottom-color: var(--accent); }
.nav-link:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

main {
  flex: 1;
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 1.5rem 1.2rem 3rem;
}

/* ---------- metrics row ---------- */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin: 1rem 0 2rem;
}
.metric {
  padding: 0.9rem 1.1rem;
  text-align: center;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
}
.metric.live {
  border-color: rgba(47, 111, 237, 0.65);
  background: var(--fill-glass-strong);
  box-shadow:
    0 0 22px rgba(47, 111, 237, 0.30),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
}
.metric-label {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}
.metric-label small { font-size: 0.65rem; text-transform: none; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot-ping { background: var(--ping); }
.dot-jitter { background: var(--jitter); }
.dot-download { background: var(--download); }
.dot-upload { background: var(--upload); }
.metric-value {
  font-size: 2rem;
  font-weight: 300;
  margin-top: 0.3rem;
  font-variant-numeric: tabular-nums;
}

/* ---------- toolbar ---------- */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}
.toolbar label {
  font-size: 0.8rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
}
.toolbar-note { font-size: 0.75rem; color: var(--ping); }

/* ---------- stage ---------- */
.stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 400px;
  justify-content: center;
}

/* liquid-glass GO button */
.go-button {
  width: 210px;
  height: 210px;
  border-radius: 50%;
  color: var(--text);
  font-size: 2.6rem;
  font-weight: 300;
  letter-spacing: 0.25em;
  text-indent: 0.25em;
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background:
    radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.20), transparent 46%),
    radial-gradient(circle at 70% 80%, rgba(47, 111, 237, 0.35), transparent 60%),
    rgba(255, 255, 255, 0.06);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  box-shadow:
    0 12px 42px rgba(0, 0, 0, 0.45),
    0 0 0 6px rgba(255, 255, 255, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.25),
    inset 0 -14px 30px rgba(47, 111, 237, 0.25);
  transition: transform 0.2s ease, box-shadow 0.3s ease;
  animation: pulse 2.6s infinite;
}
.go-button:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow:
    0 18px 52px rgba(0, 0, 0, 0.5),
    0 0 44px rgba(47, 111, 237, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.3),
    inset 0 -14px 30px rgba(47, 111, 237, 0.3);
}
.go-button:active { transform: scale(0.97); }
.go-button:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
@keyframes pulse {
  0%   { box-shadow: 0 12px 42px rgba(0,0,0,0.45), 0 0 0 0 rgba(47,111,237,0.30), inset 0 1px 0 rgba(255,255,255,0.25), inset 0 -14px 30px rgba(47,111,237,0.25); }
  70%  { box-shadow: 0 12px 42px rgba(0,0,0,0.45), 0 0 0 28px rgba(47,111,237,0), inset 0 1px 0 rgba(255,255,255,0.25), inset 0 -14px 30px rgba(47,111,237,0.25); }
  100% { box-shadow: 0 12px 42px rgba(0,0,0,0.45), 0 0 0 0 rgba(47,111,237,0), inset 0 1px 0 rgba(255,255,255,0.25), inset 0 -14px 30px rgba(47,111,237,0.25); }
}

/* ---------- gauge ---------- */
.gauge-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: min(440px, 92vw);
  position: relative;
}
#gauge { width: 100%; height: auto; }
#gauge-track { stroke: rgba(255, 255, 255, 0.09); stroke-width: 22; stroke-linecap: round; }
#gauge-progress {
  stroke: url(#gauge-grad);
  stroke-width: 22;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.12s linear;
}
#gauge-ticks line { stroke: rgba(255, 255, 255, 0.28); stroke-width: 2; }
#gauge-labels text {
  fill: var(--text-dim);
  font-size: 14px;
  text-anchor: middle;
  font-family: inherit;
}
#gauge-needle {
  stroke: var(--text);
  stroke-width: 3.5;
  stroke-linecap: round;
  transform-origin: 200px 210px;
  transition: transform 0.15s ease-out;
}
.needle-hub { fill: var(--text); }
/* Readout sits inside the gauge arc, above the needle hub */
.gauge-readout {
  position: absolute;
  top: 34%;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  pointer-events: none;
  width: 60%;
}
.gauge-phase {
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  color: var(--text-dim);
}
.gauge-phase.phase-download { color: var(--download); }
.gauge-phase.phase-upload { color: var(--upload); }
.gauge-phase.phase-ping { color: var(--ping); }
.gauge-speed { font-size: 2.2rem; font-weight: 200; font-variant-numeric: tabular-nums; white-space: nowrap; }
.gauge-speed small { font-size: 0.9rem; color: var(--text-dim); }
#graph { margin-top: 0.4rem; width: min(400px, 90vw); }

.status-line {
  margin-top: 1.4rem;
  color: var(--text-dim);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  min-height: 1.4em;
}

.restart-button {
  margin-top: 1rem;
  color: var(--text);
  border-radius: 999px;
  padding: 0.6rem 1.6rem;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}
.restart-button:hover { border-color: rgba(47, 111, 237, 0.6); background: var(--fill-glass-strong); }
.restart-button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ---------- connection info ---------- */
.conn-info {
  display: flex;
  justify-content: center;
  gap: 1.4rem;
  margin: 2.5rem 0;
  flex-wrap: wrap;
}
.conn-block {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.8rem 1.3rem;
}
.conn-icon { font-size: 1.6rem; }
.conn-title { font-size: 0.95rem; }
.conn-sub { font-size: 0.8rem; color: var(--text-dim); }

/* ---------- results ---------- */
.results-panel { padding: 1.4rem; margin: 2rem 0; }
.results-panel h2 { font-weight: 400; font-size: 1.1rem; margin-bottom: 1rem; }
.results-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.results-table th {
  text-align: left;
  color: var(--text-dim);
  font-weight: 500;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border-glass);
}
.results-table td {
  padding: 0.55rem 0.6rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-variant-numeric: tabular-nums;
}
.clear-button {
  margin-top: 1rem;
  background: transparent;
  border: 1px solid var(--border-glass);
  color: var(--text-dim);
  border-radius: 8px;
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
  cursor: pointer;
}
.clear-button:hover { color: var(--text); border-color: var(--text-dim); }
.clear-button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- about ---------- */
.about {
  margin: 2rem 0;
  color: var(--text-dim);
  font-size: 0.92rem;
  line-height: 1.6;
  padding: 1.4rem;
}
.about h2 { color: var(--text); font-weight: 400; font-size: 1.1rem; margin-bottom: 0.6rem; }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--border-glass);
  border-bottom: none;
  padding: 1.4rem 1.2rem;
}
.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.india-badge { display: block; }
.footer-text { text-align: center; font-size: 0.9rem; }
.footer-text a { color: var(--download); text-decoration: none; }
.footer-text a:hover { text-decoration: underline; }
.footer-text a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.footer-sub { color: var(--text-dim); font-size: 0.78rem; margin-top: 0.3rem; }

.hidden { display: none !important; }

/* ---------- content sections ---------- */
.about, .how-it-works, .test-providers, .data-privacy, .accessibility, .company-info {
  margin-top: 2.5rem;
  padding: 2.2rem 1.5rem;
  line-height: 1.7;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  -webkit-backdrop-filter: blur(12px) saturate(130%);
  backdrop-filter: blur(12px) saturate(130%);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transition: all 0.3s ease;
}

.about:hover, .how-it-works:hover, .test-providers:hover, .data-privacy:hover, .accessibility:hover, .company-info:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow:
    0 12px 48px rgba(0, 0, 0, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.about h2, .how-it-works h2, .test-providers h2, .data-privacy h2, .accessibility h2, .company-info h2 {
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 1.6rem;
  color: var(--download);
  letter-spacing: 0.02em;
  position: relative;
  padding-bottom: 0.8rem;
}

.about h2::after, .how-it-works h2::after, .test-providers h2::after, .data-privacy h2::after, .accessibility h2::after, .company-info h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--download), var(--accent-2), transparent);
  border-radius: 2px;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.4rem;
  margin-top: 1.4rem;
}

.about-card {
  padding: 1.6rem;
  background: linear-gradient(135deg, rgba(47, 111, 237, 0.08), rgba(106, 63, 245, 0.05));
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 18px;
  text-align: center;
  -webkit-backdrop-filter: blur(10px) saturate(125%);
  backdrop-filter: blur(10px) saturate(125%);
  box-shadow:
    0 4px 20px rgba(0, 0, 0, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transition: all 0.35s cubic-bezier(0.23, 1, 0.320, 1);
  position: relative;
  overflow: hidden;
}

.about-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(47, 111, 237, 0.3), transparent);
  border-radius: 50%;
  transition: all 0.6s ease;
}

.about-card:hover {
  transform: translateY(-8px) scale(1.04);
  background: linear-gradient(135deg, rgba(47, 111, 237, 0.15), rgba(106, 63, 245, 0.1));
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow:
    0 12px 40px rgba(47, 111, 237, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.about-card:hover::before {
  top: -20%;
  right: -20%;
  background: radial-gradient(circle, rgba(47, 111, 237, 0.5), transparent);
}

.about-card h3 {
  color: var(--accent);
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  position: relative;
  z-index: 1;
}

.about-card p {
  color: var(--text-dim);
  font-size: 0.95rem;
  position: relative;
  z-index: 1;
  font-weight: 400;
}

.how-it-works {
  background: linear-gradient(135deg, rgba(53, 195, 240, 0.08), rgba(47, 111, 237, 0.05));
}

.how-it-works:hover {
  background: linear-gradient(135deg, rgba(53, 195, 240, 0.12), rgba(47, 111, 237, 0.08));
}

.how-it-works p {
  color: var(--text-dim);
  margin-bottom: 1rem;
  line-height: 1.8;
  font-size: 0.98rem;
}

.provider-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.6rem;
  margin-top: 1.4rem;
}

.provider-card {
  padding: 1.8rem;
  background: linear-gradient(135deg, rgba(106, 63, 245, 0.08), rgba(53, 195, 240, 0.04));
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 18px;
  -webkit-backdrop-filter: blur(10px) saturate(125%);
  backdrop-filter: blur(10px) saturate(125%);
  box-shadow:
    0 4px 20px rgba(0, 0, 0, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transition: all 0.35s cubic-bezier(0.23, 1, 0.320, 1);
  position: relative;
  overflow: hidden;
}

.provider-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--download), transparent);
}

.provider-card:hover {
  transform: translateY(-8px);
  background: linear-gradient(135deg, rgba(106, 63, 245, 0.15), rgba(53, 195, 240, 0.08));
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow:
    0 12px 40px rgba(106, 63, 245, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.provider-card h3 {
  color: var(--accent);
  font-size: 1.2rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.badge {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  border-radius: 8px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: 0 4px 12px rgba(47, 111, 237, 0.3);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

.provider-card p {
  color: var(--text-dim);
  font-size: 0.95rem;
  margin-bottom: 0.8rem;
  line-height: 1.6;
}

.provider-card p:first-of-type {
  color: var(--text);
  font-weight: 500;
}

.data-privacy {
  background: linear-gradient(135deg, rgba(255, 179, 64, 0.06), rgba(255, 123, 84, 0.04));
}

.data-privacy:hover {
  background: linear-gradient(135deg, rgba(255, 179, 64, 0.1), rgba(255, 123, 84, 0.06));
}

.accessibility {
  background: linear-gradient(135deg, rgba(176, 110, 247, 0.08), rgba(53, 195, 240, 0.05));
}

.accessibility:hover {
  background: linear-gradient(135deg, rgba(176, 110, 247, 0.12), rgba(53, 195, 240, 0.08));
}

.privacy-list, .accessibility-list {
  list-style: none;
  margin-top: 1.2rem;
  display: grid;
  gap: 0.9rem;
}

.privacy-list li, .accessibility-list li {
  padding: 0.9rem 1rem;
  padding-left: 2.2rem;
  color: var(--text-dim);
  position: relative;
  line-height: 1.6;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  transition: all 0.25s ease;
  font-weight: 400;
  font-size: 0.95rem;
}

.privacy-list li:hover, .accessibility-list li:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateX(6px);
}

.privacy-list li::before, .accessibility-list li::before {
  content: "✓";
  position: absolute;
  left: 0.7rem;
  color: var(--download);
  font-weight: bold;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.privacy-list li strong, .accessibility-list li strong {
  color: var(--text);
  font-weight: 600;
}

.company-info {
  background: linear-gradient(135deg, rgba(47, 111, 237, 0.1), rgba(53, 195, 240, 0.06));
}

.company-info:hover {
  background: linear-gradient(135deg, rgba(47, 111, 237, 0.15), rgba(53, 195, 240, 0.1));
}

.company-info p {
  color: var(--text-dim);
  margin-bottom: 0.9rem;
  font-size: 0.97rem;
}

.company-info a {
  color: var(--download);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05rem;
  transition: all 0.25s ease;
  position: relative;
  display: inline-block;
}

.company-info a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--download), var(--accent));
  transition: width 0.35s ease;
}

.company-info a:hover {
  color: var(--accent);
}

.company-info a:hover::after {
  width: 100%;
}

/* ---------- responsive ---------- */
@media (max-width: 640px) {
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .metric-value { font-size: 1.5rem; }
  .go-button { width: 170px; height: 170px; font-size: 2.1rem; }
  .header-nav { display: none; }
  .logo-img { height: 34px; }
}