:root {
  --bg: #07131d;
  --bg-alt: #0d1d2a;
  --panel: rgba(10, 25, 38, 0.8);
  --panel-strong: rgba(14, 33, 48, 0.96);
  --panel-soft: rgba(255, 255, 255, 0.06);
  --surface: rgba(255, 255, 255, 0.08);
  --surface-strong: rgba(255, 255, 255, 0.12);
  --text: #edf7ff;
  --text-muted: #94aabf;
  --text-soft: #c7d5e3;
  --accent: #22c1c3;
  --accent-strong: #7ce4df;
  --accent-warm: #f59e0b;
  --success: #4ade80;
  --danger: #fb7185;
  --danger-soft: rgba(251, 113, 133, 0.12);
  --warning: #fbbf24;
  --border: rgba(148, 170, 191, 0.2);
  --border-strong: rgba(124, 228, 223, 0.34);
  --shadow: 0 28px 90px rgba(1, 12, 20, 0.34);
  --radius-xl: 26px;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --container: 1180px;
}

:root[data-theme="light"] {
  --bg: #edf5fb;
  --bg-alt: #f8fbff;
  --panel: rgba(255, 255, 255, 0.84);
  --panel-strong: rgba(255, 255, 255, 0.98);
  --panel-soft: rgba(10, 25, 38, 0.04);
  --surface: rgba(10, 25, 38, 0.05);
  --surface-strong: rgba(10, 25, 38, 0.1);
  --text: #0a1620;
  --text-muted: #53687a;
  --text-soft: #244156;
  --accent: #0f8ba8;
  --accent-strong: #0f6f84;
  --accent-warm: #d97706;
  --success: #15803d;
  --danger: #be123c;
  --danger-soft: rgba(190, 18, 60, 0.08);
  --warning: #a16207;
  --border: rgba(36, 65, 86, 0.12);
  --border-strong: rgba(15, 111, 132, 0.22);
  --shadow: 0 24px 72px rgba(15, 23, 42, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(34, 193, 195, 0.12), transparent 24rem),
    radial-gradient(circle at top right, rgba(245, 158, 11, 0.12), transparent 24rem),
    linear-gradient(180deg, var(--bg-alt), var(--bg));
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.3;
  background-image:
    linear-gradient(rgba(124, 228, 223, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 228, 223, 0.08) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 0.6), transparent 82%);
}

a {
  color: var(--accent-strong);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

button {
  cursor: pointer;
}

textarea,
select {
  color: inherit;
}

.container {
  width: min(var(--container), calc(100% - 2rem));
  margin: 0 auto;
}

.site-shell {
  position: relative;
  isolation: isolate;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(20px);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  border-bottom: 1px solid var(--border);
}

.topbar,
.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  color: var(--text);
}

.brand:hover,
.brand-footer:hover {
  text-decoration: none;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--accent), var(--accent-warm));
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: 0 18px 42px rgba(34, 193, 195, 0.3);
}

.brand-text {
  display: grid;
  gap: 0.1rem;
}

.brand-text strong,
.brand-footer {
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand-text small {
  color: var(--text-muted);
  font-size: 0.78rem;
}

.site-nav,
.footer-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-nav a,
.footer-nav a {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.site-nav a[aria-current="page"] {
  color: var(--text);
  font-weight: 700;
}

.theme-toggle,
.ghost-button,
.secondary-button,
.tab-button {
  appearance: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.theme-toggle,
.ghost-button,
.secondary-button {
  padding: 0.82rem 1rem;
}

.tab-button {
  padding: 0.95rem 1.05rem;
  font-weight: 600;
  text-align: center;
}

.theme-toggle:hover,
.ghost-button:hover,
.secondary-button:hover,
.tab-button:hover,
.drop-zone:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
}

.theme-toggle:disabled,
.ghost-button:disabled,
.secondary-button:disabled {
  opacity: 0.48;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.secondary-button {
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 22%, transparent), color-mix(in srgb, var(--accent-warm) 14%, transparent));
}

.secondary-button:hover {
  box-shadow: 0 18px 38px rgba(34, 193, 195, 0.14);
}

.hero {
  padding: 4.5rem 0 2.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 1.5rem;
  align-items: stretch;
}

.eyebrow,
.card-label {
  margin: 0 0 0.75rem;
  color: var(--accent-strong);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.02;
  letter-spacing: -0.04em;
}

h1 {
  max-width: 12ch;
  font-size: clamp(2.9rem, 5vw, 5rem);
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
}

h3 {
  font-size: 1.18rem;
}

.hero-text,
.panel-note,
.footer-copy,
.drop-copy,
.issue-note,
.prose-card p,
.prose-card li,
.article-card p,
.article-card li,
.tool-status p,
.input-hint {
  color: var(--text-muted);
  line-height: 1.72;
}

.hero-pills,
.inline-actions,
.control-row,
.output-row,
.link-grid,
.related-links,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-pills span,
.status-chip,
.mini-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.hero-pills span,
.status-chip,
.mini-chip {
  padding: 0.7rem 1rem;
}

.hero-panel {
  display: grid;
  gap: 1rem;
  padding: 1.5rem;
  align-content: center;
}

.metric-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border);
}

.metric-row:last-child {
  border-bottom: none;
}

.metric-row span {
  color: var(--text-muted);
}

.metric-row strong {
  font-size: 1.04rem;
}

.card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, color-mix(in srgb, var(--panel-strong) 92%, transparent), var(--panel));
  box-shadow: var(--shadow);
}

.card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(124, 228, 223, 0.08), transparent 48%);
  opacity: 0.85;
}

.tool-shell,
.info-grid,
.article-shell {
  padding-bottom: 3rem;
}

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

.tool-status {
  text-align: right;
}

.status-chip.is-success,
.mini-chip.is-success {
  border-color: color-mix(in srgb, var(--success) 40%, transparent);
  color: var(--success);
}

.status-chip.is-warning,
.mini-chip.is-warning {
  border-color: color-mix(in srgb, var(--warning) 40%, transparent);
  color: var(--warning);
}

.status-chip.is-error,
.mini-chip.is-error {
  border-color: color-mix(in srgb, var(--danger) 40%, transparent);
  color: var(--danger);
}

.tab-card,
.editor-card,
.preview-card,
.issues-card,
.prose-card,
.article-card,
.cta-card {
  padding: 1.35rem;
}

.tab-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

.tab-button.is-active {
  border-color: var(--border-strong);
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 18%, transparent), color-mix(in srgb, var(--accent-warm) 14%, transparent));
  box-shadow: inset 0 0 0 1px rgba(124, 228, 223, 0.12);
}

.tool-panel {
  margin-top: 1.25rem;
  animation: rise 220ms ease;
}

.workspace-grid,
.insights-grid,
.info-grid,
.article-grid,
.cta-grid {
  display: grid;
  gap: 1.25rem;
}

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

.insights-grid,
.info-grid {
  margin-top: 1.25rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.field-stack {
  display: grid;
  gap: 0.55rem;
}

.field-label {
  font-weight: 600;
  color: var(--text-soft);
}

.editor-input,
.editor-output,
.inline-code-block,
.code-frame {
  width: 100%;
  min-height: 300px;
  padding: 1rem 1rem 1rem 1.05rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: rgba(4, 15, 24, 0.56);
  color: var(--text);
  font-family: "IBM Plex Mono", "SFMono-Regular", monospace;
  font-size: 0.95rem;
  line-height: 1.6;
  resize: vertical;
  transition: border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

:root[data-theme="light"] .editor-input,
:root[data-theme="light"] .editor-output,
:root[data-theme="light"] .inline-code-block,
:root[data-theme="light"] .code-frame {
  background: rgba(245, 249, 253, 0.9);
}

.editor-input:focus,
.editor-output:focus,
select:focus,
.drop-zone:focus-visible {
  outline: none;
  border-color: var(--border-strong);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 14%, transparent);
}

.editor-input.has-error {
  border-color: color-mix(in srgb, var(--danger) 55%, transparent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--danger) 10%, transparent);
}

.drop-zone {
  position: relative;
  display: grid;
  place-items: center;
  gap: 0.45rem;
  min-height: 150px;
  padding: 1.4rem;
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border-strong);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 12%, transparent), transparent),
    var(--panel-soft);
  text-align: center;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.drop-zone.is-dragover {
  border-color: var(--accent);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 18%, transparent), color-mix(in srgb, var(--accent-warm) 12%, transparent)),
    var(--panel-soft);
}

.drop-zone-icon {
  display: inline-grid;
  place-items: center;
  min-width: 5rem;
  padding: 0.7rem 0.95rem;
  border-radius: 999px;
  background: rgba(124, 228, 223, 0.12);
  color: var(--accent-strong);
  font-weight: 700;
  font-size: 0.76rem;
  letter-spacing: 0.16em;
}

.drop-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
}

.control-row {
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
}

.control-field {
  display: grid;
  gap: 0.45rem;
  color: var(--text-muted);
  min-width: min(250px, 100%);
}

.control-field select {
  padding: 0.82rem 0.95rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}

.input-hint {
  max-width: 42ch;
}

.table-wrap {
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: rgba(4, 15, 24, 0.38);
}

:root[data-theme="light"] .table-wrap {
  background: rgba(245, 249, 253, 0.8);
}

.preview-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 540px;
}

.preview-table th,
.preview-table td {
  padding: 0.82rem 0.9rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
  font-size: 0.94rem;
}

.preview-table th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: color-mix(in srgb, var(--panel-strong) 94%, transparent);
  color: var(--text-soft);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.preview-table tr:nth-child(even) td {
  background: rgba(255, 255, 255, 0.02);
}

.empty-state-cell,
.empty-message {
  color: var(--text-muted);
}

.issues-panel {
  display: grid;
  gap: 1rem;
}

.issue-item,
.success-box,
.info-box {
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
}

.issue-item {
  background: linear-gradient(180deg, color-mix(in srgb, var(--danger) 10%, transparent), transparent);
}

.success-box {
  background: linear-gradient(180deg, color-mix(in srgb, var(--success) 10%, transparent), transparent);
}

.issue-title,
.success-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.55rem;
  font-weight: 700;
}

.issue-title strong,
.success-title strong {
  font-size: 1rem;
}

.issue-meta {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.code-frame {
  min-height: auto;
  padding: 0.9rem;
  overflow: auto;
  white-space: pre;
}

.code-line {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 0.75rem;
}

.code-line strong {
  color: var(--text-muted);
  font-weight: 600;
}

.code-line mark {
  padding: 0 0.18rem;
  border-radius: 4px;
  background: color-mix(in srgb, var(--danger) 22%, transparent);
  color: inherit;
}

.feature-list,
.related-links,
.article-list {
  padding-left: 1.1rem;
}

.feature-list li,
.article-list li {
  margin-bottom: 0.6rem;
}

.link-grid {
  margin-top: 1rem;
}

.link-grid a,
.related-links a,
.content-nav a {
  display: inline-flex;
  align-items: center;
  padding: 0.72rem 0.95rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.site-footer {
  padding: 0 0 2.5rem;
}

.footer-copy {
  margin: 0.5rem 0 0;
}

.page-hero,
.article-shell {
  padding-top: 4rem;
}

.article-grid {
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  align-items: start;
}

.article-card h1 {
  max-width: none;
  font-size: clamp(2.4rem, 4vw, 3.8rem);
}

.article-card .article-lead {
  margin: 1rem 0 1.5rem;
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.78;
}

.article-card .example-block {
  margin-top: 1.25rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: rgba(4, 15, 24, 0.38);
}

:root[data-theme="light"] .article-card .example-block {
  background: rgba(245, 249, 253, 0.82);
}

.inline-code-block {
  min-height: auto;
  white-space: pre-wrap;
}

.content-nav {
  display: grid;
  gap: 0.85rem;
}

.cta-card {
  margin-top: 1.25rem;
}

.cta-grid {
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
}

.cta-card p {
  color: var(--text-muted);
}

.cta-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.92rem 1.2rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-warm));
  color: #fff;
  font-weight: 700;
}

.cta-link:hover {
  text-decoration: none;
  filter: brightness(1.04);
}

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

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

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .topbar,
  .footer-row,
  .tool-heading,
  .card-head {
    align-items: start;
    flex-direction: column;
  }

  .hero-grid,
  .workspace-grid,
  .insights-grid,
  .info-grid,
  .article-grid,
  .cta-grid {
    grid-template-columns: 1fr;
  }

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

  .tool-status {
    text-align: left;
  }
}

@media (max-width: 720px) {
  .hero {
    padding-top: 3.4rem;
  }

  h1 {
    font-size: clamp(2.4rem, 10vw, 3.3rem);
  }

  .container {
    width: min(var(--container), calc(100% - 1.2rem));
  }

  .tab-list {
    grid-template-columns: 1fr;
  }

  .theme-toggle,
  .ghost-button,
  .secondary-button,
  .tab-button,
  .control-field select,
  .link-grid a,
  .related-links a,
  .content-nav a {
    width: 100%;
    justify-content: center;
  }

  .control-row {
    align-items: stretch;
    flex-direction: column;
  }

  .drop-zone {
    min-height: 130px;
  }

  .editor-input,
  .editor-output {
    min-height: 260px;
  }

  .preview-table {
    min-width: 460px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation: none !important;
    transition: none !important;
  }
}