:root {
  color-scheme: light;
  --bg: #f6f8fc;
  --surface: #ffffff;
  --surface-strong: #eef3ff;
  --ink: #111827;
  --muted: #5f6b7a;
  --line: #dce3ef;
  --primary: #2449c7;
  --primary-dark: #16349a;
  --cyan: #087ec4;
  --green: #087f5b;
  --red: #c92a2a;
  --yellow: #8a5d00;
  --shadow: 0 20px 70px rgba(17, 24, 39, 0.11);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(135deg, rgba(36, 73, 199, 0.09), transparent 34rem),
    linear-gradient(35deg, rgba(8, 126, 196, 0.08), transparent 32rem),
    var(--bg);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid rgba(220, 227, 239, 0.75);
  background: rgba(246, 248, 252, 0.85);
  backdrop-filter: blur(14px);
}

.brand,
.topnav,
.action-row,
.panel-head,
.preview-head,
footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 0.7rem;
  font-weight: 700;
}

.mark {
  display: grid;
  width: 2.35rem;
  height: 2.35rem;
  place-items: center;
  border-radius: 0.6rem;
  background: var(--primary);
  color: #fff;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.topnav {
  gap: 0.35rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  padding: 0.25rem;
}

.topnav a {
  border-radius: 999px;
  padding: 0.55rem 0.85rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.topnav a:hover {
  background: var(--surface-strong);
  color: var(--ink);
}

main {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
}

.quick {
  display: grid;
  justify-items: center;
  padding: clamp(2rem, 6vw, 4rem) 0 2.5rem;
  text-align: center;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0.6rem;
  font-size: clamp(1.75rem, 4.5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.intro {
  max-width: 40rem;
  margin-bottom: 1.75rem;
  text-wrap: balance;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.quick-card {
  display: grid;
  justify-items: center;
  gap: 1rem;
  width: min(100%, 34rem);
  padding: clamp(1.25rem, 4vw, 2rem);
}

.segmented {
  display: inline-flex;
  gap: 0.2rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg);
  padding: 0.2rem;
}

.segmented button {
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  padding: 0.45rem 1.1rem;
  font-size: 0.9rem;
  font-weight: 600;
}

.segmented button[aria-pressed="true"] {
  background: var(--surface);
  color: var(--primary);
  box-shadow: 0 1px 3px rgba(17, 24, 39, 0.14);
}

.quick-value {
  width: 100%;
  border: 1px dashed var(--line);
  border-radius: 0.9rem;
  background: var(--surface-strong);
  color: var(--ink);
  padding: 1.1rem 0.5rem;
  font-size: clamp(2rem, 9vw, 3.25rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.1;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.quick-value:hover {
  border-color: var(--primary);
}

.quick-value.copied {
  border-style: solid;
  border-color: rgba(8, 127, 91, 0.45);
  background: rgba(8, 127, 91, 0.08);
}

.quick-value.flash {
  animation: flash 0.25s ease;
}

@keyframes flash {
  from {
    opacity: 0.35;
    transform: translateY(2px);
  }
}

.quick-hint {
  margin: -0.4rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.quick-actions {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 0.75rem;
  width: 100%;
}

.quick-foot {
  margin: 1.25rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.quick-foot a {
  color: var(--primary);
  font-weight: 600;
}

button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: rgba(255, 255, 255, 0.93);
  box-shadow: var(--shadow);
}

.bulk-panel,
.validator-panel {
  scroll-margin-top: 5rem;
  padding: 1.25rem;
}

.panel-head {
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.1rem;
}

.panel-head {
  align-items: flex-start;
}

.panel h2 {
  margin-bottom: 0.25rem;
  font-size: 1.15rem;
  font-weight: 700;
}

.panel p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.55;
}

.controls {
  display: grid;
  grid-template-columns: 2fr 1fr 1.4fr;
  gap: 0.9rem;
}

label {
  display: grid;
  gap: 0.45rem;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  background: var(--surface);
  color: var(--ink);
  padding: 0.78rem 0.85rem;
  outline: none;
}

input:focus,
select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(36, 73, 199, 0.12);
}

.action-row {
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.15rem;
}

.primary-button,
.secondary-button,
.text-button {
  border: 0;
  border-radius: 0.7rem;
  font-weight: 600;
}

.primary-button.large,
.secondary-button.large {
  padding: 1rem 1.25rem;
  font-size: 1.05rem;
}

.primary-button {
  flex: 1 1 150px;
  background: var(--primary);
  color: #fff;
  padding: 0.82rem 1rem;
}

.primary-button:hover {
  background: var(--primary-dark);
}

.secondary-button {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  padding: 0.78rem 0.9rem;
}

.secondary-button:hover,
.copy-one:hover {
  background: var(--surface-strong);
}

.secondary-button.small {
  padding: 0.55rem 0.75rem;
  font-size: 0.85rem;
  white-space: nowrap;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(330px, 0.9fr);
  gap: 1.25rem;
  align-items: start;
  padding: 1rem 0 2rem;
}

.result-list {
  display: grid;
  gap: 0.65rem;
  max-height: 620px;
  margin-top: 1.15rem;
  overflow: auto;
  padding-right: 0.2rem;
}

.result-item {
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr) auto;
  gap: 0.85rem;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: #fff;
  padding: 0.75rem;
}

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

.id-value {
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 700;
}

.meta-title {
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 600;
}

.meta-note {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.4;
}

.copy-one {
  border: 1px solid var(--line);
  border-radius: 0.55rem;
  background: var(--surface);
  padding: 0.55rem 0.7rem;
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 600;
}

.validator-input {
  margin-bottom: 1rem;
}

.validator-input input {
  font-family:
    "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 1rem;
}

.validation-card {
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: var(--surface-strong);
  padding: 1rem;
}

.validation-card.valid {
  border-color: rgba(8, 127, 91, 0.35);
  background: rgba(8, 127, 91, 0.09);
}

.validation-card.invalid {
  border-color: rgba(201, 42, 42, 0.3);
  background: rgba(201, 42, 42, 0.08);
}

.validation-card.warning {
  border-color: rgba(138, 93, 0, 0.28);
  background: rgba(255, 193, 7, 0.12);
}

.status {
  margin-bottom: 0.35rem;
  font-weight: 700;
}

.valid .status {
  color: var(--green);
}

.invalid .status {
  color: var(--red);
}

.warning .status {
  color: var(--yellow);
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
  margin-top: 0.85rem;
}

.detail-grid div {
  border: 1px solid rgba(95, 107, 122, 0.18);
  border-radius: 0.55rem;
  background: rgba(255, 255, 255, 0.6);
  padding: 0.65rem;
}

.detail-grid dt {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 500;
}

.detail-grid dd {
  margin: 0.2rem 0 0;
  font-weight: 700;
}

.export-preview {
  margin-top: 1rem;
}

.preview-head {
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.6rem;
}

.preview-head h3 {
  margin-bottom: 0;
  font-size: 1rem;
}

.text-button {
  background: transparent;
  color: var(--primary);
  padding: 0;
}

pre {
  max-height: 310px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: #0f172a;
  color: #dbeafe;
  padding: 1rem;
  font-size: 0.85rem;
  line-height: 1.6;
  white-space: pre-wrap;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  padding: 0 0 1rem;
}

.content-grid article,
.faq {
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: rgba(255, 255, 255, 0.82);
  padding: 1.25rem;
}

.content-grid h2,
.faq h2 {
  font-size: 1.2rem;
}

.content-grid p,
.faq p {
  color: var(--muted);
  line-height: 1.7;
}

.faq {
  margin-bottom: 2rem;
}

details {
  border-top: 1px solid var(--line);
  padding: 1rem 0;
}

details:last-child {
  padding-bottom: 0;
}

summary {
  cursor: pointer;
  font-weight: 600;
}

summary + p {
  margin: 0.7rem 0 0;
}

footer {
  justify-content: space-between;
  gap: 1rem;
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.toast {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 20;
  transform: translateY(1rem);
  opacity: 0;
  border-radius: 0.8rem;
  background: #111827;
  color: #fff;
  padding: 0.8rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

@media (max-width: 900px) {
  .workspace,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .topnav {
    display: none;
  }
}

@media (max-width: 620px) {
  main,
  footer {
    width: min(100% - 1rem, 1180px);
  }

  .topbar {
    padding-inline: 0.75rem;
  }

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

  .result-item {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .result-item > div:nth-child(2) {
    display: none;
  }

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

  footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

.guide,
.more-tools {
  margin-bottom: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: rgba(255, 255, 255, 0.82);
  padding: 1.25rem;
  scroll-margin-top: 5rem;
}

.faq {
  scroll-margin-top: 5rem;
}

.guide h2,
.more-tools h2 {
  font-size: 1.2rem;
}

.guide h3 {
  margin: 1.5rem 0 0.6rem;
  font-size: 1rem;
}

.guide p,
.guide li,
.more-tools p {
  color: var(--muted);
  line-height: 1.7;
}

.guide p:last-child {
  margin-bottom: 0;
}

.guide a {
  color: var(--primary);
  font-weight: 600;
}

.guide strong,
.guide .mono {
  color: var(--ink);
}

.steps {
  margin: 0 0 1rem;
  padding-left: 1.3rem;
}

.steps li + li {
  margin-top: 0.35rem;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 0.65rem 0.75rem 0.65rem 0;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 600;
}

tbody tr:last-child td {
  border-bottom: 0;
}

td.mono {
  font-weight: 700;
}

.more-tools {
  margin-bottom: 2rem;
  padding: 1.5rem;
}

.more-tools-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.more-tools-head h2 {
  margin-bottom: 0;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
}

.more-tools .kicker {
  margin-bottom: 0.3rem;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-transform: uppercase;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tool-grid li {
  display: grid;
}

.tool-card {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: var(--surface);
  padding: 1.1rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.tool-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: 0 10px 28px rgba(36, 73, 199, 0.12);
}

.tool-icon {
  display: grid;
  flex: none;
  width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  border-radius: 0.7rem;
}

.tool-icon.amber {
  background: #fdf1d7;
  color: #a16207;
}

.tool-icon.red {
  background: #fde4e4;
  color: #c92a2a;
}

.tool-icon.green {
  background: #dcf5ea;
  color: #087f5b;
}

.tool-icon.violet {
  background: #ece5fd;
  color: #6d3fd6;
}

.tool-icon.cyan {
  background: #dbf0fb;
  color: #087ec4;
}

.tool-icon.blue {
  background: #e2e9fd;
  color: #2449c7;
}

.tool-body {
  display: grid;
  gap: 0.3rem;
  min-width: 0;
}

.tool-name {
  color: var(--ink);
  font-size: 1.02rem;
  font-weight: 600;
}

.tool-desc {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

.tool-host {
  margin-top: 0.25rem;
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
}

footer a:hover {
  color: var(--primary);
}

footer span a {
  color: var(--ink);
  font-weight: 700;
}

@media (max-width: 900px) {
  .tool-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .tool-grid {
    grid-template-columns: 1fr;
  }

  .more-tools-head {
    align-items: flex-start;
    flex-direction: column;
  }
}