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

:root {
  --bg:      #07080f;
  --surface: #0e0f1c;
  --border:  #1c1d2e;
  --accent:  #4f8eff;
  --accent2: #10b981;
  --text:    #e4e4f0;
  --muted:   #52527a;
  --success: #4ade80;
  --danger:  #f87171;
}

body {
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 100% 45% at 50% 0%, #0b1628 0%, transparent 70%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  min-height: 100dvh;
  display: flex;
  justify-content: center;
  padding: 2rem 1rem 3rem;
}

.container {
  width: 100%;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

/* ── Header ── */
header { text-align: center; width: 100%; }

.brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
}

.brand-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

h1 {
  font-size: 1.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-sc {
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.18em;
}

.brand-now {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  font-weight: 900;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  border-radius: 6px;
  padding: 0.22em 0.55em 0.18em 0.45em;
  box-shadow: 0 0 20px color-mix(in srgb, var(--accent2) 55%, transparent),
              0 0 8px color-mix(in srgb, var(--accent) 35%, transparent);
  line-height: 1;
  position: relative;
  top: -1px;
}

.brand-now-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #fff;
  flex-shrink: 0;
  animation: live-dot 1.8s ease-in-out infinite;
}

@keyframes live-dot {
  0%, 100% { opacity: 1;   transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.7); }
}

.ip-info {
  display: none;
  width: 100%;
  font-size: 0.78rem;
  color: var(--text);
  min-height: 1rem;
  text-align: center;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.ip-reveal {
  display: none;
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.9rem 0.85rem 0.85rem;
  justify-items: center;
  gap: 0.6rem;
  text-align: center;
}

.results-complete .ip-reveal {
  display: grid;
}

.ip-reveal.visible .ip-info {
  display: block;
}

.ip-card-label {
  color: var(--muted);
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ip-toggle {
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--border));
  border-radius: 100px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--text);
  font: inherit;
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  padding: 0.55rem 0.85rem;
  min-width: 9.75rem;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s, transform 0.1s;
}

.ip-toggle:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 12%, transparent),
              inset 0 0 18px color-mix(in srgb, var(--accent) 5%, transparent);
}

.ip-toggle:active { transform: scale(0.98); }

/* ── Provider selector ── */
header          { order: -2; }
#provider-row   { order: -1; }

.results-complete #provider-row  { display: none; }
.results-complete #btn-action    { order: -1; width: 100%; }

.provider-row {
  display: flex;
  gap: 0.375rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.25rem;
  width: 100%;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.provider-row.locked {
  gap: 0;
  border-color: color-mix(in srgb, var(--accent) 58%, var(--border));
  box-shadow: inset 0 0 24px color-mix(in srgb, var(--accent) 5%, transparent);
}

.prov-btn {
  flex: 1;
  min-width: 0;
  padding: 0.5rem 0.25rem;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.22s, color 0.22s, flex 0.3s ease, opacity 0.2s ease, padding 0.3s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.prov-btn:hover  { color: var(--text); }

.prov-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
}

.provider-row.locked .prov-btn.active {
  flex: 1 1 auto;
  width: 100%;
  cursor: default;
}

.provider-row.locked .prov-btn:disabled {
  opacity: 1;
  color: #fff;
}

.provider-row.locked .prov-btn.inactive {
  flex: 0 1 0;
  width: 0;
  min-width: 0;
  opacity: 0;
  padding-left: 0;
  padding-right: 0;
  pointer-events: none;
}

.custom-url-wrap {
  display: none;
  flex-direction: column;
  gap: 0.65rem;
  width: 100%;
}

.custom-url-wrap.visible { display: flex; }

.custom-field {
  display: grid;
  gap: 0.3rem;
}

.custom-field span {
  color: var(--muted);
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding-left: 0.2rem;
}

.custom-url-input,
.custom-select {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.65rem 0.875rem;
  color: var(--text);
  font-size: 0.875rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s;
}

.custom-select {
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--muted) 50%),
    linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position:
    calc(100% - 18px) 50%,
    calc(100% - 13px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.custom-url-input:focus,
.custom-select:focus { border-color: var(--accent); }
.custom-url-input::placeholder { color: var(--muted); }

.custom-url-hint {
  font-size: 0.65rem;
  color: var(--muted);
  padding-left: 0.25rem;
}

/* ── Gauge section ── */
#gauge-section {
  display: flex;
  justify-content: center;
  width: 100%;
  transition: opacity 0.3s, max-height 0.35s ease;
  overflow: hidden;
  max-height: 200px;
}

#gauge-section.post-test {
  opacity: 0;
  max-height: 0;
  pointer-events: none;
}

/* ── Gauge ── */
.gauge-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 260px;
  height: 155px;
}

.gauge-wrap::before {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 85%;
  height: 60px;
  background: radial-gradient(ellipse at 50% 100%,
    color-mix(in srgb, var(--accent) 18%, transparent) 0%,
    transparent 70%);
  pointer-events: none;
  z-index: 0;
  border-radius: 50%;
}

.speed-backdrop {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  border-radius: 8px;
}

.gauge { position: relative; z-index: 1; width: 100%; height: 100%; overflow: visible; }

.gauge-track {
  fill: none;
  stroke: var(--border);
  stroke-width: 14;
  stroke-linecap: round;
  animation: track-breathe 3.5s ease-in-out infinite;
}

@keyframes track-breathe {
  0%, 100% { stroke: var(--border); }
  50%       { stroke: color-mix(in srgb, var(--accent) 18%, var(--border)); }
}

.gauge-fill {
  fill: none;
  stroke: var(--accent);
  stroke-width: 14;
  stroke-linecap: round;
  stroke-dasharray: 283;
  stroke-dashoffset: 283;
  transition: stroke-dashoffset 0.25s ease-out, stroke 0.3s;
  filter: drop-shadow(0 0 10px var(--accent)) drop-shadow(0 0 3px var(--accent));
}

.gauge-center {
  position: absolute;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  top: 76%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.gauge-number {
  font-size: 3rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  min-width: 4ch;
  text-align: center;
}

.gauge-unit {
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  margin-top: 3px;
}

/* ── Result chart ── */
.result-chart-wrap {
  display: none;
  width: 100%;
}

.result-chart-wrap.visible {
  display: flex;
}

.result-chart {
  width: 100%;
  height: 180px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  display: block;
}

/* ── Primary metric cards (Download / Upload) ── */
.metrics-primary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.625rem;
  width: 100%;
}

/* ── Secondary metric cards (Ping / Jitter / Loaded) ── */
.metrics-secondary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.625rem;
  width: 100%;
}

.mcard {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.9rem 0.75rem 0.75rem;
  text-align: center;
  transition: border-color 0.2s, box-shadow 0.2s;
}

#card-download {
  border-top: 2px solid var(--accent);
}

#card-upload {
  border-top: 2px solid var(--accent2);
}

#card-download .mcard-icon { color: var(--accent); }
#card-upload .mcard-icon   { color: var(--accent2); }

.results-complete #card-download {
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 18%, transparent),
              inset 0 0 28px color-mix(in srgb, var(--accent) 5%, transparent);
}

.results-complete #card-upload {
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent2) 18%, transparent),
              inset 0 0 28px color-mix(in srgb, var(--accent2) 5%, transparent);
}

.mcard.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 15%, transparent),
              inset 0 0 24px color-mix(in srgb, var(--accent) 5%, transparent);
}

.mcard.primary { padding: 1.1rem 0.75rem 0.9rem; }

.mcard-icon {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 0.4rem;
}

.mcard.primary .mcard-val { font-size: 2.2rem; }

.mcard-val {
  font-size: 1.55rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.mcard-label {
  font-size: 0.6rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-top: 0.4rem;
  transition: color 0.35s ease, text-shadow 0.35s ease, transform 0.35s ease;
}

.results-complete .mcard-label {
  color: var(--text);
  font-weight: 800;
  text-shadow: 0 0 10px color-mix(in srgb, var(--accent) 28%, transparent);
  animation: label-pop 0.65s ease both;
}

.results-complete #card-upload .mcard-label {
  text-shadow: 0 0 10px color-mix(in srgb, var(--accent2) 32%, transparent);
}

.results-complete #card-ping .mcard-label { animation-delay: 0.04s; }
.results-complete #card-jitter .mcard-label { animation-delay: 0.08s; }
.results-complete #card-loaded .mcard-label { animation-delay: 0.12s; }

@keyframes label-pop {
  0%   { transform: translateY(0); letter-spacing: 0.07em; }
  45%  { transform: translateY(-2px); letter-spacing: 0.11em; }
  100% { transform: translateY(0); letter-spacing: 0.08em; }
}

/* ── Status + button ── */
.status {
  display: none;
}

.btn-start {
  width: 100%;
  padding: 0.875rem 1rem;
  border: none;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow:
    0 0 28px color-mix(in srgb, var(--accent) 30%, transparent),
    0 4px 20px rgba(0, 0, 0, 0.4);
  transition: opacity 0.15s, transform 0.1s, box-shadow 0.2s;
}

.btn-start:hover {
  opacity: 0.92;
  box-shadow:
    0 0 42px color-mix(in srgb, var(--accent) 45%, transparent),
    0 4px 20px rgba(0, 0, 0, 0.4);
}
.btn-start:active  { transform: scale(0.97); }
.btn-start:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: none; }

.btn-start.btn-stop {
  background: linear-gradient(135deg, #f87171, #ef4444);
  box-shadow:
    0 0 28px color-mix(in srgb, #ef4444 30%, transparent),
    0 4px 20px rgba(0, 0, 0, 0.4);
}

/* ── Quality panel ── */
.quality-panel {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.1rem 1.1rem 1rem;
  display: none;
}

.quality-panel.visible { display: block; }

.quality-title {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 0.875rem;
}

.quality-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.625rem 1rem;
}

.quality-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text);
}

.quality-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.quality-dot.pass { background: var(--success); box-shadow: 0 0 5px var(--success); }
.quality-dot.fail { background: var(--muted); }
.quality-item.fail { color: var(--muted); }

.insight-panel {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.1rem 1.1rem 1rem;
}

.insight-panel {
  display: none;
}

.insight-panel.visible { display: block; }

.result-summary {
  border-left: 3px solid var(--accent);
  padding-left: 0.75rem;
  margin-bottom: 0.9rem;
}

.result-summary strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.result-summary span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.insight-list {
  display: grid;
  gap: 0.55rem;
}

.insight-row {
  display: grid;
  grid-template-columns: 0.55rem 1fr;
  gap: 0.55rem;
  align-items: start;
  color: var(--text);
  font-size: 0.78rem;
  line-height: 1.45;
}

.insight-marker {
  width: 0.45rem;
  height: 0.45rem;
  margin-top: 0.44rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px color-mix(in srgb, var(--accent) 60%, transparent);
}

.insight-row.warn .insight-marker { background: #fbbf24; box-shadow: none; }
.insight-row.bad .insight-marker  { background: var(--danger); box-shadow: none; }

.improvement-title { margin-top: 1rem; }

.confidence-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.confidence-summary {
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.confidence-group {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.75rem;
  min-width: 0;
}

.confidence-group.download {
  border-color: color-mix(in srgb, var(--accent) 34%, var(--border));
}

.confidence-group.upload {
  border-color: color-mix(in srgb, var(--accent2) 34%, var(--border));
}

.confidence-heading {
  color: var(--text);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.62rem;
}

.confidence-metrics {
  display: grid;
  gap: 0.5rem;
}

.confidence-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  min-width: 0;
}

.confidence-label {
  color: var(--muted);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.confidence-value {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 700;
  line-height: 1.35;
}

.confidence-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.12rem 0.45rem;
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  color: var(--text);
}

.confidence-pill.high { background: color-mix(in srgb, var(--success) 22%, transparent); }
.confidence-pill.medium { background: color-mix(in srgb, #fbbf24 22%, transparent); }
.confidence-pill.low { background: color-mix(in srgb, var(--danger) 20%, transparent); }

/* ── Footer ── */
.page-footer {
  font-size: 0.65rem;
  color: var(--muted);
  text-align: center;
  display: grid;
  gap: 0.35rem;
  line-height: 1.4;
}

.footer-note {
  display: block;
  max-width: 28rem;
}

/* ── Gauge pulse when measuring ── */
@keyframes gauge-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
.gauge-fill.measuring { animation: gauge-pulse 1.2s ease-in-out infinite; }

@media (max-width: 420px) {
  h1 {
    font-size: 1.34rem;
    gap: 0.35rem;
  }

  .brand-icon {
    width: 33px;
    height: 33px;
  }

  .brand-sc { letter-spacing: 0.1em; }
  .brand-now { letter-spacing: 0.12em; }

  .quality-grid {
    grid-template-columns: 1fr;
  }

  .confidence-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-height: 860px) and (max-width: 480px) {
  body {
    padding: 1rem 0.85rem 1.25rem;
  }

  .container {
    gap: 0.9rem;
  }

  .brand-icon {
    width: 33px;
    height: 33px;
  }

  h1 {
    font-size: 1.34rem;
  }

  .prov-btn {
    padding: 0.42rem 0.25rem;
  }

  #gauge-section {
    max-height: 145px;
  }

  .gauge-wrap {
    width: 220px;
    height: 130px;
  }

  .gauge-center {
    top: 77%;
  }

  .gauge-number {
    font-size: 2.35rem;
  }

  .metrics-primary,
  .metrics-secondary {
    gap: 0.5rem;
  }

  .mcard {
    padding: 0.7rem 0.55rem 0.6rem;
  }

  .mcard.primary {
    padding: 0.78rem 0.55rem 0.68rem;
  }

  .mcard-icon {
    margin-bottom: 0.28rem;
  }

  .mcard.primary .mcard-val {
    font-size: 1.85rem;
  }

  .mcard-val {
    font-size: 1.35rem;
  }

  .mcard-label {
    margin-top: 0.3rem;
  }

  .btn-start {
    padding: 0.72rem 0.9rem;
  }
}