.form-shell {
  max-width: 820px;
}

.topbar-context {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-width: 0;
}

.topbar-actions {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.ip-summary {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 36px;
  padding: 0.42rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(30, 41, 59, 0.88);
  font-size: 0.82rem;
  color: var(--text);
  white-space: nowrap;
}

.ip-summary.is-loading {
  color: var(--muted);
}

.ip-summary.is-error {
  border-color: rgba(248, 113, 113, 0.7);
  color: var(--danger);
}

.ip-summary-item {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.ip-summary-label {
  color: var(--muted);
}

.ip-summary-divider {
  width: 1px;
  height: 18px;
  background: var(--border);
}

.country-flag {
  width: 20px;
  height: 14px;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.16);
}

.form-title {
  margin-bottom: 0.9rem;
  font-size: 1.25rem;
}

.fieldset-reset {
  min-width: 0;
  border: 0;
}

.fieldset-reset legend {
  margin-bottom: 0.35rem;
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 500;
}

.hidden {
  display: none !important;
}

.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.radio-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--panel-2);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
  font-size: 0.9rem;
}

.radio-tag:has(input:checked) {
  border-color: var(--accent);
  background: rgba(56, 189, 248, 0.14);
}

.radio-tag input {
  margin: 0;
  accent-color: var(--accent);
}

.radio-tag:hover {
  background: rgba(56, 189, 248, 0.12);
}

.speedtest-panel {
  margin-top: 0.5rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
}

.speedtest-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.speedtest-heading h2 {
  font-size: 1rem;
}

.speed-phase {
  margin-top: 0.1rem;
  font-size: 0.78rem;
  color: var(--muted);
}

.progress-bar {
  height: 6px;
  margin-top: 0.65rem;
  overflow: hidden;
  border-radius: 999px;
  background: var(--panel-2);
}

.progress-bar > div {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.2s ease;
}

.speedtest-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.speed-metric {
  padding: 0.75rem;
  border-radius: var(--radius);
  background: var(--panel-2);
  text-align: center;
}

.speed-metric .val {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
}

.speed-metric .lbl {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.03em;
}

button:disabled,
.btn-disabled {
  cursor: not-allowed;
  opacity: 0.5;
  filter: grayscale(0.2);
  box-shadow: none;
}

@media (max-width: 760px) {
  .topbar {
    align-items: flex-start;
  }

  .topbar-context {
    align-items: flex-start;
    flex-direction: column;
  }

  .ip-summary {
    flex-wrap: wrap;
    white-space: normal;
  }

  .speedtest-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .topbar {
    flex-wrap: wrap;
    gap: 0.65rem;
  }

  .topbar-actions {
    width: 100%;
  }

  .topbar-actions .btn {
    flex: 1;
    justify-content: center;
  }

  .speedtest-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .speedtest-heading .btn {
    justify-content: center;
  }
}