.url-tool {
  margin: 24px 0 40px;
  padding: 24px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: var(--tool-bg);
}

.url-field { margin-bottom: 18px; }

.url-textarea-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: start;
}

.url-field-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.url-field label {
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
}

.count-label {
  color: var(--text-muted);
  font-size: 12px;
  white-space: nowrap;
}

.url-field textarea {
  box-sizing: border-box;
  display: block;
  width: 100%;
  min-height: 80px;
  padding: 13px 14px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text-color);
  font: 16px/1.5 "Menlo", "Consolas", "Monaco", "Courier New", monospace;
  overflow-wrap: anywhere;
  resize: vertical;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.url-field textarea:focus,
.url-settings select:focus,
.copy-btn:focus-visible,
.clear-btn:focus-visible {
  border-color: var(--primary-color);
  outline: 3px solid color-mix(in srgb, var(--primary-color) 28%, transparent);
  outline-offset: 2px;
}

.url-settings {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 0;
  padding: 18px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--panel-bg);
}

.url-setting label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 700;
}

.url-setting select {
  box-sizing: border-box;
  width: 100%;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 7px;
  background: var(--input-bg);
  color: var(--text-color);
  font: 14px/1.4 "Helvetica Neue", Arial, sans-serif;
}

.url-setting p {
  margin: 7px 0 0;
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.55;
}

.copy-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  min-width: 76px;
  padding: 0 16px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--panel-bg);
  color: var(--text-color);
  font-size: 13px;
  font-weight: bold;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s;
}

.copy-btn:hover:not(:disabled) {
  background-color: var(--hover-bg);
  border-color: var(--primary-color);
  color: var(--primary-color);
  transform: translateY(-1px);
}

.copy-btn.copied,
.copy-btn.copied:hover:not(:disabled) {
  background-color: var(--success-color);
  border-color: var(--success-color);
  color: #fff;
}

.copy-btn.is-invalid,
.copy-btn.is-invalid:hover:not(:disabled) {
  background-color: var(--error-color);
  border-color: var(--error-color);
  color: #fff;
}

.copy-btn:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  background-color: var(--panel-bg) !important;
  color: var(--text-muted) !important;
  border-color: var(--border-color) !important;
}

.tool-footer {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}

.clear-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 42px;
  padding: 10px 18px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--panel-bg);
  color: var(--text-muted);
  font-size: 13px;
  font-weight: bold;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s;
}

.clear-btn:hover {
  background: rgba(220, 53, 69, 0.08);
  border-color: var(--error-color);
  color: var(--error-color);
}

.tool-message {
  min-height: 0;
  margin: -4px 0 8px;
  font-size: 13px;
}

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

.url-advanced-settings {
  margin-top: 18px;
}

.privacy-note {
  margin: 16px 0 0;
  padding: 12px 14px;
  border-left: 4px solid var(--success-color);
  background: color-mix(in srgb, var(--success-color) 8%, var(--panel-bg));
  color: var(--text-muted);
  font-size: 13px;
}

.reference-table-wrap {
  margin: 22px 0 34px;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.reference-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  background: var(--panel-bg);
  font-size: 14px;
}

.reference-table th,
.reference-table td {
  padding: 13px 15px;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  vertical-align: top;
}

.reference-table th { background: var(--tool-bg); }
.reference-table tr:last-child td { border-bottom: 0; }
.reference-table code { overflow-wrap: anywhere; word-break: break-all; }

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 22px 0 34px;
}

.comparison-item {
  padding: 20px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--tool-bg);
}

.comparison-item h3 { margin: 0 0 8px; font-size: 17px; }
.comparison-item p { margin: 0; color: var(--text-muted); font-size: 14px; }

.faq-list details {
  border-bottom: 1px solid var(--border-color);
}

.faq-list details:first-child { border-top: 1px solid var(--border-color); }
.faq-list summary { padding: 16px 4px; font-weight: 700; cursor: pointer; }
.faq-list details p { margin: 0; padding: 0 4px 18px; }

.share-section {
  text-align: center;
  margin: 60px 0 20px;
  padding: 0 20px;
}

.share-section h3 {
  margin-bottom: 20px;
  color: var(--text-muted);
  font-size: 16px;
  font-weight: bold;
}

.share-buttons {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100px;
  padding: 10px 0;
  border-radius: 4px;
  color: #fff;
  font-size: 14px;
  font-weight: bold;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.2s;
}

.share-btn:hover {
  opacity: 0.9;
  color: #fff;
  text-decoration: none;
  transform: translateY(-2px);
}

.btn-x { background-color: #000; }
.btn-fb { background-color: #1877f2; }
.btn-line { background-color: #06c755; }
.btn-hatena { background-color: #00a4de; }

@media (max-width: 760px) {
  .url-settings,
  .comparison-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .url-tool { padding: 16px; }
  .url-textarea-row {
    grid-template-columns: 1fr;
  }
  .copy-btn,
  .clear-btn { width: 100%; }
  .tool-footer { justify-content: stretch; }
  .url-advanced-settings { margin-top: 22px; }
  .share-buttons {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }
  .share-btn {
    width: 100%;
  }
}