/* ==========================================================================
   VPNVL — iplookup.css
   Page-scoped styles for the network check page (出口 IP / DNS 泄漏自查).
   Depends on tokens declared in base.css. No hardcoded colors.
   ========================================================================== */

/* ---------------------------------------------------------------
   1. Tool shell
   --------------------------------------------------------------- */
.lk-tool { margin-top: 24px; }

.lk-panel {
  position: relative;
  overflow: hidden;
  min-width: 0;
  padding: 22px;
  border-radius: var(--r-xl);
  background: var(--panel-3);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-window);
}
.lk-panel::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background-image: linear-gradient(90deg, transparent 0%, var(--accent-24) 30%, var(--mint-34) 70%, transparent 100%);
}

.lk-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px 16px;
}
.lk-title {
  font-size: 17px;
  letter-spacing: -0.01em;
}

.lk-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 26px;
  margin: 0;
  padding: 3px 11px;
  border-radius: var(--r-pill);
  background: var(--accent-06);
  border: 1px solid var(--accent-16);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--accent-dark);
  white-space: nowrap;
  max-width: 100%;
  overflow: hidden;
}
.lk-status.is-ok {
  background: var(--mint-10);
  border-color: var(--mint-28);
  color: var(--forest);
}
.lk-status.is-fail {
  background: var(--panel-2);
  border-color: var(--border);
  color: var(--muted);
}

/* ---------------------------------------------------------------
   2. Result fields
   --------------------------------------------------------------- */
.lk-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}
.lk-cell {
  min-width: 0;
  padding: 12px 14px;
  border-radius: var(--r-md);
  background-image: linear-gradient(180deg, var(--panel-8) 0%, var(--panel-9) 100%);
  border: 1px solid var(--border-soft);
}
.lk-label {
  margin: 0;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--muted);
}
.lk-value {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--text);
  overflow-wrap: anywhere;
}
.lk-value.is-pending {
  color: var(--muted);
  font-weight: 500;
}

.lk-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.lk-actions .btn {
  flex-shrink: 0;
  white-space: nowrap;
}

.lk-note {
  margin: 14px 0 0;
  padding: 10px 12px;
  border-radius: var(--r-md);
  background: var(--accent-06);
  border: 1px dashed var(--accent-24);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-2);
  overflow-wrap: anywhere;
}
.lk-note[hidden] { display: none; }

.lk-hint {
  margin: 12px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

/* off-screen sink used by the clipboard fallback */
.lk-copy-sink {
  position: fixed;
  left: -9999px;
  top: 0;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

/* ---------------------------------------------------------------
   3. Section headings
   --------------------------------------------------------------- */
.lk-head { max-width: 780px; }
.lk-head h2 { margin-top: 10px; }
.lk-head .lead { margin-top: 12px; }

/* ---------------------------------------------------------------
   4. Field explainer cards
   --------------------------------------------------------------- */
.lk-explain {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}
.lk-ex {
  min-width: 0;
  padding: 18px;
  border-radius: var(--r-lg);
  background: var(--panel-3);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-panel);
}
.lk-ex-idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent-dark);
}
.lk-ex h3 {
  margin-top: 6px;
  font-size: 15px;
}
.lk-ex p {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--text-2);
}

/* ---------------------------------------------------------------
   5. Numbered self-check steps
   --------------------------------------------------------------- */
.lk-steps {
  counter-reset: lk-step;
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 82ch;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}
.lk-steps > li {
  position: relative;
  min-width: 0;
  padding-left: 40px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-2);
}
.lk-steps > li::before {
  counter-increment: lk-step;
  content: counter(lk-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-06);
  border: 1px solid var(--accent-24);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--accent-dark);
}
.lk-steps > li strong {
  display: block;
  margin-bottom: 2px;
  color: var(--text);
  font-weight: 600;
}

/* ---------------------------------------------------------------
   6. Privacy split + aside lists
   --------------------------------------------------------------- */
.lk-split {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
  gap: 22px;
  align-items: start;
  margin-top: 18px;
}
.lk-aside {
  min-width: 0;
  padding: 18px;
  border-radius: var(--r-lg);
  background: var(--panel-3);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-panel);
}
.lk-aside h3 {
  font-size: 13px;
  letter-spacing: 0.01em;
}
.lk-aside h3:not(:first-child) { margin-top: 18px; }

.lk-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-2);
}
.lk-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  min-width: 0;
}
.lk-list li::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--mint);
}
.lk-list.is-no li::before { background: var(--border); }

/* ---------------------------------------------------------------
   7. Related links
   --------------------------------------------------------------- */
.lk-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}
.lk-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 18px;
  border-radius: var(--r-lg);
  background: var(--panel-3);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-panel);
  text-decoration: none;
  color: inherit;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.lk-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}
.lk-link b {
  font-family: var(--font-display);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text);
}
.lk-link span {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}
.lk-link em {
  margin-top: auto;
  padding-top: 8px;
  font-style: normal;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-dark);
}

/* ---------------------------------------------------------------
   8. Breakpoints
   --------------------------------------------------------------- */
@media (max-width: 900px) {
  .lk-grid,
  .lk-explain,
  .lk-split,
  .lk-links { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 640px) {
  .lk-panel { padding: 16px; }
  .lk-actions .btn { flex: 1 1 auto; }
  .lk-steps > li { padding-left: 34px; }
  .lk-steps > li::before {
    width: 24px;
    height: 24px;
    font-size: 10px;
  }
  .lk-link:hover { transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .lk-link:hover { transform: none; }
}