:root {
  --tool-surface: linear-gradient(180deg, #ffffff 0%, #f7faff 100%);
  --tool-surface-soft: #f3f7ff;
  --tool-border: #d8e4f3;
  --tool-accent: #2563eb;
  --tool-accent-soft: #e7f0ff;
  --tool-text: #1f2a44;
  --tool-text-muted: #5e6b84;
  --tool-success: #0f8a48;
  --tool-danger: #b42318;
  --tool-shadow: 0 18px 44px rgba(37, 99, 235, 0.08);
}

.qrcode-workspace .panel-intro .tags span {
  background: linear-gradient(135deg, #2f6df6 0%, #4a8dff 100%);
}

.intro-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.intro-highlights span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background: #eef5ff;
  border: 1px solid #d4e3ff;
  color: #2954b8;
  font-size: 13px;
  font-weight: 700;
}

.qrcode-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 18px;
  align-items: start;
}

.qrcode-main,
.qrcode-side {
  display: grid;
  gap: 18px;
}

.tool-block {
  padding: 22px;
  background: var(--tool-surface);
  border: 1px solid var(--tool-border);
  border-radius: 24px;
  box-shadow: var(--tool-shadow);
}

.section-pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  background: #eaf2ff;
  color: #1749b5;
  font-size: 13px;
  font-weight: 800;
}

.section-pill-soft {
  background: #eefaf4;
  color: #0f8a48;
}

.qrcode-controls {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.control {
  display: grid;
  gap: 8px;
}

.control span {
  color: var(--tool-text);
  font-size: 14px;
  font-weight: 700;
}

.control small {
  color: var(--tool-text-muted);
  font-size: 12px;
  line-height: 1.7;
}

.control input,
.control select,
.control textarea,
.result-link-field input {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #d7e1ef;
  border-radius: 16px;
  background: #fff;
  color: var(--tool-text);
  font-size: 14px;
  line-height: 1.6;
  padding: 13px 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.control textarea {
  min-height: 160px;
  resize: vertical;
}

.control input:focus,
.control select:focus,
.control textarea:focus,
.result-link-field input:focus {
  outline: none;
  border-color: #8db4ff;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.12);
}

.control-wide {
  grid-column: 1 / -1;
}

.color-field {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

.color-field input[type="color"] {
  height: 52px;
  padding: 4px;
  cursor: pointer;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.action-row button {
  border: 1px solid #d6e0ee;
  background: #f8fbff;
  color: #31415f;
  border-radius: 16px;
  padding: 11px 18px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.action-row button:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.08);
  border-color: #b9cdf0;
}

.action-row .primary {
  background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
  border-color: #2563eb;
  color: #fff;
}

.helper-card {
  background: linear-gradient(180deg, #ffffff 0%, #f9fcff 100%);
}

.helper-list {
  margin: 16px 0 0;
  padding-left: 18px;
  color: var(--tool-text-muted);
}

.helper-list li {
  margin: 0 0 10px;
  line-height: 1.8;
}

.result-card {
  position: sticky;
  top: 12px;
}

.result-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.result-badge {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background: #eef5ff;
  color: #1f5ad7;
  font-size: 12px;
  font-weight: 800;
}

.tool-tip {
  min-height: 24px;
  margin-top: 14px;
  color: var(--tool-success);
  font-size: 13px;
  line-height: 1.7;
}

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

.qr-preview-shell {
  display: grid;
  place-items: center;
  min-height: 320px;
  margin-top: 12px;
  padding: 18px;
  border-radius: 24px;
  border: 1px dashed #c8d8ef;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.88) 0%, rgba(245, 249, 255, 0.96) 100%),
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.08), transparent 45%);
}

.qr-preview-shell.is-empty {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(248, 250, 255, 1) 100%),
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.06), transparent 50%);
}

.qr-preview-image {
  display: block;
  width: min(100%, 280px);
  max-width: 280px;
  height: auto;
  border-radius: 20px;
  background: #fff;
  border: 1px solid #d9e4f2;
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.1);
}

.qr-preview-image[hidden],
.qr-preview-empty[hidden] {
  display: none !important;
}

.qr-preview-empty {
  max-width: 280px;
  text-align: center;
  pointer-events: none;
}

.qr-preview-empty strong {
  display: block;
  color: var(--tool-text);
  font-size: 17px;
  line-height: 1.5;
}

.qr-preview-empty p {
  margin: 10px 0 0;
  color: var(--tool-text-muted);
  font-size: 13px;
  line-height: 1.8;
}

.result-link-field {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}

.result-link-field span {
  color: var(--tool-text);
  font-size: 13px;
  font-weight: 700;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.stat-card {
  display: grid;
  gap: 6px;
  padding: 14px;
  border-radius: 18px;
  border: 1px solid #dbe5f2;
  background: #fff;
}

.stat-card span {
  color: var(--tool-text-muted);
  font-size: 12px;
  line-height: 1.4;
}

.stat-card strong {
  color: var(--tool-text);
  font-size: 18px;
  line-height: 1.3;
}

.panel-related .zbtool-related-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-right: 0;
}

.panel-related .zbtool-related-list li {
  float: none;
  width: auto;
  margin: 0;
  border-radius: 18px;
  border: 1px solid #e1e8f2;
  box-shadow: none;
}

.panel-related .zbtool-related-list li a {
  padding: 16px;
}

.panel-related .zbtool-related-list .desc {
  margin-top: 10px;
}

@media (max-width: 1100px) {
  .qrcode-layout {
    grid-template-columns: 1fr;
  }

  .result-card {
    position: static;
  }
}

@media (max-width: 760px) {
  .qrcode-controls,
  .stats-grid,
  .panel-related .zbtool-related-list {
    grid-template-columns: 1fr;
  }

  .tool-block,
  .qr-preview-shell {
    border-radius: 20px;
  }

  .action-row {
    gap: 8px;
  }

  .action-row button {
    width: 100%;
    justify-content: center;
  }

  .color-field {
    grid-template-columns: 52px minmax(0, 1fr);
  }
}