/* Shared UI for small, client-side utility pages migrated from local tools. */
:root {
  --long-bg: #f8fafc;
  --long-panel: #ffffff;
  --long-panel-muted: #f1f5f9;
  --long-border: #dbe4ef;
  --long-text: #0f172a;
  --long-muted: #64748b;
  --long-accent: #0284c7;
  --long-accent-strong: #0369a1;
  --long-danger: #dc2626;
  --long-success: #059669;
  --long-shadow: 0 16px 38px rgba(15, 23, 42, .08);
}

html.dark {
  --long-bg: #070d19;
  --long-panel: #0d1728;
  --long-panel-muted: #111f34;
  --long-border: #223249;
  --long-text: #e2e8f0;
  --long-muted: #94a3b8;
  --long-accent: #38bdf8;
  --long-accent-strong: #7dd3fc;
  --long-danger: #f87171;
  --long-success: #34d399;
  --long-shadow: 0 18px 42px rgba(2, 6, 23, .24);
}

.long-tool-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  color: var(--long-text);
}

.long-tool-hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.long-tool-hero h1 {
  margin: 0;
  font-size: clamp(24px, 4vw, 36px);
  line-height: 1.15;
  letter-spacing: -.025em;
}

.long-tool-kicker {
  margin: 0 0 8px;
  color: var(--long-accent);
  font: 700 12px/1.2 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.long-tool-lede {
  max-width: 760px;
  margin: 10px 0 0;
  color: var(--long-muted);
  line-height: 1.75;
}

.long-tool-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.long-tool-badge {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 5px 10px;
  border: 1px solid var(--long-border);
  border-radius: 999px;
  color: var(--long-muted);
  background: var(--long-panel);
  font-size: 12px;
  white-space: nowrap;
}

.long-tool-badge strong {
  color: var(--long-success);
}

.long-tool-card {
  border: 1px solid var(--long-border);
  border-radius: 16px;
  background: var(--long-panel);
  box-shadow: var(--long-shadow);
}

.long-tool-card + .long-tool-card {
  margin-top: 16px;
}

.long-tool-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--long-border);
}

.long-tool-card-header h2,
.long-tool-card-header h3 {
  margin: 0;
  font-size: 15px;
  letter-spacing: .01em;
}

.long-tool-card-body {
  padding: 18px;
}

.long-tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.long-tool-grid-wide {
  grid-column: 1 / -1;
}

.long-tool-field {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.long-tool-field label,
.long-tool-label {
  color: var(--long-muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
}

.long-tool-input,
.long-tool-select,
.long-tool-textarea,
.long-tool-output,
.long-tool-code {
  width: 100%;
  border: 1px solid var(--long-border);
  border-radius: 10px;
  color: var(--long-text);
  background: var(--long-bg);
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}

.long-tool-input,
.long-tool-select {
  min-height: 40px;
  padding: 8px 11px;
}

.long-tool-textarea,
.long-tool-output,
.long-tool-code {
  min-height: 260px;
  padding: 12px 13px;
  resize: vertical;
  font: 13px/1.65 ui-monospace, SFMono-Regular, Consolas, monospace;
}

.long-tool-output,
.long-tool-code {
  white-space: pre-wrap;
  word-break: break-word;
}

.long-tool-textarea:focus,
.long-tool-output:focus,
.long-tool-code:focus,
.long-tool-input:focus,
.long-tool-select:focus {
  border-color: var(--long-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--long-accent) 16%, transparent);
}

.long-tool-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
}

.long-tool-btn {
  min-height: 38px;
  padding: 8px 13px;
  border: 1px solid var(--long-border);
  border-radius: 9px;
  color: var(--long-text);
  background: var(--long-panel-muted);
  cursor: pointer;
  font: 700 12px/1.2 system-ui, -apple-system, "Segoe UI", sans-serif;
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
}

.long-tool-btn:hover {
  border-color: var(--long-accent);
  transform: translateY(-1px);
}

.long-tool-btn:active {
  transform: translateY(0);
}

.long-tool-btn.primary {
  border-color: var(--long-accent);
  color: #fff;
  background: var(--long-accent);
}

.long-tool-btn.primary:hover {
  background: var(--long-accent-strong);
}

.long-tool-btn.danger {
  color: var(--long-danger);
}

.long-tool-btn:disabled {
  opacity: .45;
  cursor: not-allowed;
  transform: none;
}

.long-tool-hint {
  margin: 8px 0 0;
  color: var(--long-muted);
  font-size: 12px;
  line-height: 1.65;
}

.long-tool-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.long-tool-stat {
  padding: 12px;
  border: 1px solid var(--long-border);
  border-radius: 11px;
  background: var(--long-panel-muted);
}

.long-tool-stat span {
  display: block;
  color: var(--long-muted);
  font-size: 11px;
}

.long-tool-stat strong {
  display: block;
  margin-top: 5px;
  color: var(--long-accent);
  font: 700 21px/1 ui-monospace, SFMono-Regular, Consolas, monospace;
}

.long-tool-message {
  min-height: 20px;
  margin-top: 10px;
  color: var(--long-muted);
  font-size: 12px;
}

.long-tool-message.error {
  color: var(--long-danger);
}

.long-tool-message.success {
  color: var(--long-success);
}

.long-tool-drop {
  display: grid;
  place-items: center;
  min-height: 118px;
  padding: 18px;
  border: 1px dashed var(--long-accent);
  border-radius: 12px;
  color: var(--long-muted);
  background: color-mix(in srgb, var(--long-accent) 7%, var(--long-panel));
  text-align: center;
  cursor: pointer;
}

.long-tool-drop.dragover {
  background: color-mix(in srgb, var(--long-accent) 15%, var(--long-panel));
}

.long-tool-file-list {
  display: grid;
  gap: 7px;
  max-height: 230px;
  margin-top: 12px;
  overflow: auto;
}

.long-tool-file {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 11px;
  border: 1px solid var(--long-border);
  border-radius: 8px;
  background: var(--long-panel-muted);
  font-size: 12px;
}

.long-tool-file button {
  border: 0;
  color: var(--long-danger);
  background: transparent;
  cursor: pointer;
  font: inherit;
}

.long-tool-checks {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  color: var(--long-muted);
  font-size: 12px;
}

.long-tool-checks label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.long-tool-source {
  max-height: 290px;
  min-height: 180px;
  overflow: auto;
  white-space: pre-wrap;
}

.long-tool-footer-note {
  margin: 16px 0 0;
  padding: 12px 14px;
  border-left: 3px solid var(--long-accent);
  color: var(--long-muted);
  background: var(--long-panel-muted);
  font-size: 12px;
  line-height: 1.7;
}

@media (max-width: 760px) {
  .long-tool-shell {
    width: min(100% - 20px, 1180px);
  }

  .long-tool-hero {
    display: block;
  }

  .long-tool-badges {
    justify-content: flex-start;
    margin-top: 12px;
  }

  .long-tool-grid,
  .long-tool-stats {
    grid-template-columns: 1fr;
  }

  .long-tool-card-body,
  .long-tool-card-header {
    padding: 14px;
  }
}