:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --page-start: #ffffff;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --surface-3: #eef4f8;
  --panel-bg: rgba(255, 255, 255, 0.92);
  --topbar-bg: rgba(255, 255, 255, 0.84);
  --input-bg: #ffffff;
  --button-bg: #ffffff;
  --button-hover-bg: #f8fafc;
  --policy-bg: #ffffff;
  --line: rgba(15, 23, 42, 0.1);
  --line-strong: rgba(15, 23, 42, 0.18);
  --text: #162032;
  --muted: #647184;
  --faint: #8a96a8;
  --teal: #0f766e;
  --blue: #2563eb;
  --amber: #b7791f;
  --rose: #dc2626;
  --green: #059669;
  --primary-text: #ffffff;
  --focus: rgba(15, 118, 110, 0.58);
  --focus-ring: rgba(15, 118, 110, 0.13);
  --brand-start: #14b8a6;
  --brand-end: #60a5fa;
  --brand-text: #061014;
  --brand-shadow: rgba(45, 212, 191, 0.22);
  --page-glow-teal: rgba(15, 118, 110, 0.1);
  --page-glow-blue: rgba(37, 99, 235, 0.08);
  --danger-bg: #fff5f5;
  --danger-text: #991b1b;
  --good-bg: #ecfdf5;
  --good-text: #047857;
  --warn-bg: #fffbeb;
  --warn-text: #92400e;
  --bad-bg: #fef2f2;
  --bad-text: #b91c1c;
  --table-head-bg: #eef4f8;
  --table-head-text: #334155;
  --type-bg: #eff6ff;
  --type-text: #1d4ed8;
  --preview-bg: #070b10;
  --preview-text: #dff8f2;
  --chip-text: #1e3a8a;
  --chip-bg: rgba(96, 165, 250, 0.09);
  --hero-bg:
    linear-gradient(135deg, rgba(45, 212, 191, 0.11), transparent 42%),
    linear-gradient(90deg, rgba(96, 165, 250, 0.1), rgba(248, 199, 92, 0.05));
  --generate-bg: linear-gradient(135deg, rgba(15, 118, 110, 0.08), rgba(37, 99, 235, 0.05));
  --shadow: 0 22px 60px rgba(15, 23, 42, 0.08);
  --radius: 8px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f1110;
  --page-start: #151815;
  --surface: #171a18;
  --surface-2: #1d211f;
  --surface-3: #242b28;
  --panel-bg: rgba(23, 26, 24, 0.94);
  --topbar-bg: rgba(16, 18, 17, 0.84);
  --input-bg: #101311;
  --button-bg: #1a1e1c;
  --button-hover-bg: #232a26;
  --policy-bg: #111512;
  --line: rgba(229, 239, 232, 0.12);
  --line-strong: rgba(229, 239, 232, 0.22);
  --text: #edf4ef;
  --muted: #a2afa8;
  --faint: #77847d;
  --teal: #238b7f;
  --blue: #72a7e8;
  --amber: #d9ad4a;
  --rose: #df6677;
  --green: #219b73;
  --primary-text: #f4fffc;
  --focus: rgba(35, 139, 127, 0.72);
  --focus-ring: rgba(35, 139, 127, 0.16);
  --brand-start: #1d7f75;
  --brand-end: #3f79c7;
  --brand-text: #f4fffc;
  --brand-shadow: rgba(35, 139, 127, 0.18);
  --page-glow-teal: rgba(35, 139, 127, 0.08);
  --page-glow-blue: rgba(63, 121, 199, 0.06);
  --danger-bg: rgba(223, 102, 119, 0.12);
  --danger-text: #f2a5af;
  --good-bg: rgba(33, 155, 115, 0.13);
  --good-text: #7ed2a8;
  --warn-bg: rgba(217, 173, 74, 0.13);
  --warn-text: #e8c871;
  --bad-bg: rgba(223, 102, 119, 0.12);
  --bad-text: #f2a5af;
  --table-head-bg: #202720;
  --table-head-text: #d3ddd7;
  --type-bg: rgba(114, 167, 232, 0.14);
  --type-text: #c0d7f8;
  --preview-bg: #070907;
  --preview-text: #d7ede4;
  --chip-text: #d7ede4;
  --chip-bg: rgba(35, 139, 127, 0.12);
  --hero-bg:
    linear-gradient(135deg, rgba(35, 139, 127, 0.09), transparent 42%),
    linear-gradient(90deg, rgba(63, 121, 199, 0.08), rgba(217, 173, 74, 0.05));
  --generate-bg: linear-gradient(135deg, rgba(35, 139, 127, 0.1), rgba(63, 121, 199, 0.06));
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.36);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, var(--page-glow-teal), transparent 32rem),
    radial-gradient(circle at top right, var(--page-glow-blue), transparent 28rem),
    linear-gradient(180deg, var(--page-start), var(--bg) 20rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 0;
}

input,
select,
textarea {
  width: 100%;
  color: var(--text);
  background: var(--input-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  outline: none;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--focus);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

input,
select {
  min-height: 36px;
  padding: 7px 10px;
}

textarea {
  min-height: 112px;
  padding: 11px;
  resize: vertical;
  line-height: 1.55;
}

label {
  display: grid;
  gap: 6px;
  min-width: 0;
  color: var(--muted);
  font-size: 12px;
}

strong {
  font-weight: 720;
}

code,
pre,
textarea.mono {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.app-shell {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px clamp(16px, 2.4vw, 34px);
  border-bottom: 1px solid var(--line);
  background: var(--topbar-bg);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: none;
}

.header-segment {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
}

.header-segment button {
  display: inline-grid;
  place-items: center;
  min-width: 30px;
  height: 30px;
  padding: 0 8px;
  border-radius: 6px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
}

.header-segment button:hover {
  color: var(--text);
  background: var(--button-hover-bg);
}

.header-segment button.active {
  color: var(--primary-text);
  background: var(--teal);
}

.header-segment svg {
  width: 15px;
  height: 15px;
}

.language-segment button {
  min-width: 34px;
  font-size: 11px;
  font-weight: 760;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--brand-start), var(--brand-end));
  color: var(--brand-text);
  font-weight: 900;
  box-shadow: 0 12px 34px var(--brand-shadow);
}

.brand h1 {
  margin: 0;
  font-size: 18px;
  line-height: 1.1;
}

.brand p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.workspace {
  display: grid;
  gap: 16px;
  padding: 16px clamp(16px, 2.4vw, 34px) 28px;
}

.workbench {
  display: grid;
  grid-template-columns: minmax(340px, 470px) minmax(480px, 1fr);
  gap: 16px;
  align-items: start;
}

.stack {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.panel,
.advanced-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-bg);
  box-shadow: var(--shadow);
  min-width: 0;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
}

.panel-title {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.panel-title h2 {
  margin: 0;
  font-size: 14px;
  font-weight: 760;
}

.panel-title span {
  color: var(--muted);
  font-size: 12px;
}

.panel-title svg {
  width: 18px;
  height: 18px;
  color: var(--teal);
}

.panel-body {
  padding: 14px;
}

.flow-panel {
  overflow: hidden;
}

.flow-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 18px;
  border-bottom: 1px solid var(--line);
  background: var(--hero-bg);
}

.flow-hero h2 {
  margin: 4px 0 7px;
  font-size: 22px;
  line-height: 1.25;
}

.flow-hero p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.eyebrow {
  color: var(--teal);
  font-size: 12px;
  font-weight: 720;
}

.hero-action {
  min-width: 118px;
}

.grid-2,
.grid-3 {
  display: grid;
  gap: 10px;
}

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

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.row {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.row.wrap {
  flex-wrap: wrap;
}

.row.between {
  justify-content: space-between;
}

.muted {
  color: var(--muted);
}

.faint {
  color: var(--faint);
}

.hint {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 36px;
  padding: 8px 11px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--button-bg);
  color: var(--text);
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
  white-space: nowrap;
}

.btn:hover {
  border-color: var(--line-strong);
  background: var(--button-hover-bg);
}

.btn:active {
  transform: translateY(1px);
}

.btn.primary {
  border-color: color-mix(in srgb, var(--teal) 60%, transparent);
  background: var(--teal);
  color: var(--primary-text);
  box-shadow: 0 10px 28px var(--brand-shadow);
}

.btn.danger {
  border-color: rgba(220, 38, 38, 0.24);
  background: var(--danger-bg);
  color: var(--danger-text);
}

.btn.icon {
  width: 34px;
  min-width: 34px;
  padding: 0;
}

.btn svg,
.icon-inline {
  width: 16px;
  height: 16px;
  flex: none;
}

.compact-actions .btn {
  min-height: 32px;
  padding: 6px 9px;
  font-size: 12px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 22px;
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.badge.good {
  border-color: rgba(5, 150, 105, 0.22);
  color: var(--good-text);
  background: var(--good-bg);
}

.badge.warn {
  border-color: rgba(183, 121, 31, 0.22);
  color: var(--warn-text);
  background: var(--warn-bg);
}

.badge.bad {
  border-color: rgba(220, 38, 38, 0.22);
  color: var(--bad-text);
  background: var(--bad-bg);
}

.segmented,
.tabs {
  display: grid;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
}

.segmented {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.tabs {
  display: flex;
}

.segmented button,
.tabs button {
  min-height: 32px;
  padding: 5px 9px;
  border-radius: 6px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
}

.segmented button.active,
.tabs button.active {
  color: var(--primary-text);
  background: var(--teal);
}

.template-picker {
  display: grid;
  gap: 8px;
}

.generate-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--generate-bg);
}

.generate-strip div {
  display: grid;
  gap: 2px;
}

.generate-strip span {
  color: var(--muted);
  font-size: 12px;
}

.routing-details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
}

.routing-details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 12px;
  cursor: pointer;
  list-style: none;
}

.routing-details summary::-webkit-details-marker {
  display: none;
}

.routing-details summary span {
  font-weight: 720;
}

.routing-details summary small {
  color: var(--muted);
  font-size: 12px;
}

.policy-list {
  display: grid;
  gap: 8px;
  padding: 0 12px 12px;
}

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

.policy-row > span {
  min-width: 0;
  overflow: hidden;
  color: var(--text);
  font-size: 13px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.policy-toggle {
  display: flex;
  gap: 4px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--policy-bg);
}

.policy-toggle label {
  display: inline-flex;
  align-items: center;
  min-width: 48px;
  min-height: 28px;
  justify-content: center;
  padding: 4px 8px;
  border-radius: 6px;
  color: var(--muted);
  cursor: pointer;
}

.policy-toggle label.active {
  color: var(--surface);
  background: var(--text);
}

.policy-toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.metric {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
}

.metric span {
  display: block;
  font-size: 20px;
  font-weight: 800;
}

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

.source-list,
.item-list {
  display: grid;
  gap: 10px;
}

.source-item,
.module-item,
.filter-item,
.chain-item,
.deleted-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
}

.source-item {
  padding: 11px;
}

.source-item.nested-source {
  margin-top: 9px;
  background: var(--surface);
}

.source-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
}

.source-item textarea {
  margin-top: 9px;
  min-height: 170px;
  background: var(--input-bg);
  font-size: 13px;
}

.source-item textarea.header-textarea {
  min-height: 96px;
}

.dns-policy-list {
  margin-top: 10px;
}

.source-actions {
  justify-content: flex-end;
}

.source-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 9px;
}

.inline-details {
  width: 100%;
  margin-top: 2px;
}

.inline-details summary,
.subdetails summary {
  color: var(--muted);
  cursor: pointer;
  font-size: 12px;
}

.inline-details[open] {
  padding-top: 6px;
}

.checkline {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 28px;
  color: var(--muted);
  font-size: 12px;
}

.checkline input {
  width: 16px;
  min-height: 16px;
  accent-color: var(--teal);
}

.advanced-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.advanced-card {
  box-shadow: none;
}

.advanced-card summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  gap: 11px;
  align-items: center;
  padding: 14px;
  cursor: pointer;
  list-style: none;
}

.advanced-card summary::-webkit-details-marker {
  display: none;
}

.advanced-card summary::after {
  content: "+";
  color: var(--muted);
  font-size: 18px;
}

.advanced-card[open] summary::after {
  content: "-";
}

.advanced-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--teal) 13%, transparent);
  color: var(--teal);
}

.advanced-icon svg {
  width: 18px;
  height: 18px;
}

.advanced-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.advanced-copy span {
  color: var(--muted);
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.advanced-body {
  padding: 0 14px 14px;
  border-top: 1px solid var(--line);
}

.advanced-toolbar {
  padding-top: 12px;
}

.subdetails {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
}

.subdetails[open] summary {
  margin-bottom: 10px;
}

.node-table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  max-height: 520px;
}

.node-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 860px;
  font-size: 12px;
}

.node-table th,
.node-table td {
  border-bottom: 1px solid var(--line);
  padding: 7px;
  text-align: left;
  vertical-align: middle;
}

.node-table th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--table-head-bg);
  color: var(--table-head-text);
  font-size: 11px;
  font-weight: 720;
}

.node-table input[type="checkbox"] {
  width: 16px;
  min-height: 16px;
  accent-color: var(--teal);
}

.node-table input.small {
  min-height: 30px;
  padding: 5px 7px;
}

.node-name-input {
  min-width: 230px;
}

.type-pill {
  display: inline-flex;
  min-width: 54px;
  justify-content: center;
  padding: 3px 7px;
  border-radius: 999px;
  background: var(--type-bg);
  color: var(--type-text);
  border: 1px solid rgba(37, 99, 235, 0.16);
  font-size: 11px;
  text-transform: uppercase;
}

.modules-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
}

.module-item,
.filter-item,
.chain-item,
.deleted-item {
  padding: 10px;
}

.module-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 7px;
}

.switch {
  position: relative;
  width: 38px;
  height: 22px;
  flex: none;
}

.switch input {
  position: absolute;
  inset: 0;
  opacity: 0;
}

.switch span {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: var(--surface-3);
  border: 1px solid var(--line);
  transition: background 160ms ease;
}

.switch span::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  left: 2px;
  top: 2px;
  border-radius: 50%;
  background: var(--surface);
  transition: transform 160ms ease;
}

.switch input:checked + span {
  background: color-mix(in srgb, var(--teal) 78%, transparent);
  border-color: color-mix(in srgb, var(--teal) 70%, transparent);
}

.switch input:checked + span::after {
  transform: translateX(16px);
}

.preview-panel {
  position: sticky;
  top: 80px;
}

.preview-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.preview-area {
  width: 100%;
  height: min(72vh, 820px);
  min-height: 540px;
  border: 0;
  border-top: 1px solid var(--line);
  border-radius: 0 0 var(--radius) var(--radius);
  background: var(--preview-bg);
  color: var(--preview-text);
  padding: 15px;
  line-height: 1.55;
  font-size: 12px;
  tab-size: 2;
  white-space: pre;
  overflow: auto;
}

.visual {
  display: grid;
  gap: 11px;
  padding: 14px;
  min-height: 540px;
  border-top: 1px solid var(--line);
}

.visual-row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.visual-label {
  color: var(--muted);
  font-size: 12px;
  padding-top: 5px;
}

.chip-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  max-width: 220px;
  padding: 5px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--chip-text);
  background: var(--chip-bg);
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.empty {
  display: grid;
  place-items: center;
  min-height: 104px;
  color: var(--muted);
  text-align: center;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 18px;
}

.validation-box {
  margin: 0 14px 14px;
  padding: 10px 12px;
  border-radius: var(--radius);
  border: 1px solid rgba(183, 121, 31, 0.24);
  background: var(--warn-bg);
  color: var(--warn-text);
  font-size: 12px;
}

.flow-panel .validation-box {
  margin: 0;
}

.validation-box.bad {
  border-color: rgba(220, 38, 38, 0.24);
  background: var(--bad-bg);
  color: var(--bad-text);
}

.validation-box strong {
  display: block;
  margin-bottom: 5px;
}

.validation-box ul {
  margin: 0;
  padding-left: 18px;
}

.toast-stack {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 40;
  display: grid;
  gap: 8px;
  width: min(360px, calc(100vw - 32px));
}

.toast {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-bg);
  box-shadow: var(--shadow);
  padding: 10px 12px;
  color: var(--text);
  font-size: 13px;
}

.toast.good {
  border-color: rgba(53, 211, 155, 0.38);
}

.toast.bad {
  border-color: rgba(251, 113, 133, 0.42);
}

.toast.warn {
  border-color: rgba(248, 199, 92, 0.42);
}

.split-line {
  height: 1px;
  background: var(--line);
  margin: 12px 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 1240px) {
  .workbench {
    grid-template-columns: 1fr;
  }

  .preview-panel {
    position: static;
  }
}

@media (max-width: 900px) {
  .topbar {
    flex-wrap: wrap;
  }

  .topbar-actions {
    width: 100%;
    justify-content: flex-end;
  }

  .advanced-grid {
    grid-template-columns: 1fr;
  }

  .flow-hero,
  .source-top,
  .grid-2,
  .grid-3,
  .modules-grid,
  .source-meta,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .generate-strip,
  .policy-row {
    grid-template-columns: 1fr;
  }

  .generate-strip {
    display: grid;
  }

  .source-top {
    grid-template-columns: 1fr;
  }

  .preview-area,
  .visual {
    min-height: 420px;
  }
}