:root {
  --ink: #131313;
  --paper: #faf9f3;
  --paper-2: #f4f1e7;
  --teal: #0f766e;
  --amber: #d97706;
  --coral: #dc2626;
  --line: #d4d0c3;
  --mono: "IBM Plex Mono", "Courier New", monospace;
  --display: "Space Grotesk", "Segoe UI", sans-serif;
  --shadow: 0 20px 40px rgba(19, 19, 19, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  font-family: var(--display);
  background: radial-gradient(circle at 20% 10%, #fef3c7 0%, transparent 30%),
    radial-gradient(circle at 80% 0%, #d1fae5 0%, transparent 28%),
    var(--paper);
}

.bg-pattern {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(to right, rgba(15, 118, 110, 0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(217, 119, 6, 0.08) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at center, black 25%, transparent 85%);
  z-index: -1;
}

.hero {
  padding: 2.5rem 1.2rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.eyebrow {
  margin: 0;
  font-family: var(--mono);
  color: var(--teal);
  letter-spacing: 0.05em;
}

h1 {
  margin: 0.5rem 0;
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  line-height: 1.05;
}

.subtitle {
  margin: 0;
  color: #44403c;
}

.site-nav {
  max-width: 1200px;
  margin: 0 auto 1rem;
  padding: 0 1.2rem;
  display: grid;
  gap: 0.7rem;
}

.site-nav-links {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.site-nav a {
  border: 1px solid #bfb7a4;
  border-radius: 999px;
  padding: 0.42rem 0.8rem;
  text-decoration: none;
  color: #1f2937;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.82);
}

.site-nav a.active,
.site-nav a:hover {
  background: var(--teal);
  color: #fff;
  border-color: var(--teal);
}

.site-nav-tools {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.site-nav-tools-label {
  font-family: var(--mono);
  color: #57534e;
  font-size: 0.92rem;
}

.site-nav .tools-dropdown {
  display: inline-flex;
  align-items: center;
}

.site-nav select {
  min-width: 240px;
  border: 1px solid #bfb7a4;
  border-radius: 999px;
  padding: 0.42rem 2rem 0.42rem 0.8rem;
  background: rgba(255, 255, 255, 0.82);
  color: #1f2937;
  font-family: var(--display);
  font-size: 0.95rem;
  font-weight: 600;
}

.site-nav select:focus {
  outline: 2px solid var(--teal);
  outline-offset: 1px;
}

.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;
}

.layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.2rem 2rem;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 1rem;
}

.layout.single {
  grid-template-columns: 1fr;
}

.toc {
  position: sticky;
  top: 1rem;
  align-self: start;
  padding: 1rem;
  border: 2px solid var(--line);
  background: linear-gradient(145deg, #ffffff, var(--paper-2));
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.toc h2 {
  margin-top: 0;
}

.toc nav {
  display: grid;
  gap: 0.4rem;
}

.toc a {
  color: #1f2937;
  text-decoration: none;
  font-weight: 500;
}

.toc a:hover {
  color: var(--teal);
}

.tools-grid {
  display: grid;
  gap: 1rem;
}

.landing-grid {
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.tool-link-card {
  display: block;
  border: 2px solid var(--line);
  border-radius: 18px;
  padding: 1rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(244, 241, 231, 0.82));
  box-shadow: var(--shadow);
  text-decoration: none;
  color: var(--ink);
  transition: transform 130ms ease;
}

.tool-link-card:hover {
  transform: translateY(-2px);
}

.tool-card {
  border: 2px solid var(--line);
  border-radius: 18px;
  padding: 1rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(244, 241, 231, 0.82));
  box-shadow: var(--shadow);
  animation: reveal 550ms ease both;
}

.tool-card:nth-child(2n) {
  animation-delay: 120ms;
}

.tool-ui-heading {
  margin-bottom: 0.75rem;
}

.page-format-sections ul {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.35rem;
}

.related-tools-links {
  line-height: 1.8;
}

.related-tools-links a {
  color: var(--teal);
  font-weight: 600;
  text-decoration: none;
}

.related-tools-links a:hover {
  text-decoration: underline;
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

h2,
h3,
h4 {
  margin: 0 0 0.4rem;
}

p {
  margin: 0 0 0.9rem;
}

label {
  display: block;
  font-size: 0.9rem;
  margin: 0.5rem 0 0.3rem;
}

textarea,
input,
select {
  width: 100%;
  border: 2px solid #c9c2b2;
  border-radius: 12px;
  padding: 0.65rem 0.7rem;
  font-family: var(--mono);
  font-size: 0.92rem;
  background: #fffdf8;
  color: var(--ink);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

input[type="color"] {
  min-height: 48px;
  padding: 0.25rem;
  cursor: pointer;
  font-family: initial;
}

input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}

input[type="color"]::-webkit-color-swatch {
  border: 0;
  border-radius: 8px;
}

input[type="color"]::-moz-color-swatch {
  border: 0;
  border-radius: 8px;
}

.output-area {
  min-height: 120px;
}

textarea.code-source-hidden {
  display: none;
}

pre.code-highlight-mirror {
  margin: 0;
  border: 2px solid #c9c2b2;
  border-radius: 12px;
  background: #fffdf8;
  padding: 0.65rem 0.7rem;
  min-height: 120px;
  max-height: 360px;
  overflow: auto;
  white-space: pre;
  font-family: var(--mono);
  font-size: 0.92rem;
}

.actions {
  display: flex;
  gap: 0.5rem;
  margin: 0.7rem 0;
}

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

.option-row {
  align-items: center;
}

.option-row label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin: 0;
  padding: 0.35rem 0.5rem;
  border: 1px solid #c9c2b2;
  border-radius: 999px;
  background: #fff;
  font-family: var(--display);
}

.option-row input[type="checkbox"] {
  width: auto;
  margin: 0;
  border-radius: 4px;
  padding: 0;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
  font-family: var(--display);
  font-weight: 600;
  background: var(--teal);
  color: white;
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease;
}

button:hover {
  transform: translateY(-1px);
  background: #0e6a62;
}

button.ghost {
  background: var(--amber);
}

button.ghost:hover {
  background: #c16607;
}

pre.output {
  margin: 0.4rem 0 0;
  border-radius: 12px;
  border: 2px dashed #c4baa5;
  background: #fff;
  padding: 0.7rem;
  min-height: 72px;
  max-height: 360px;
  overflow: auto;
  white-space: pre-wrap;
  font-family: var(--mono);
  font-size: 0.85rem;
}

.table-wrap {
  margin-top: 0.75rem;
  overflow-x: auto;
}

.json-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 2px solid #c4baa5;
  border-radius: 10px;
  overflow: hidden;
}

.json-table th,
.json-table td {
  border: 1px solid #d8d0bd;
  padding: 0.5rem 0.6rem;
  text-align: left;
  vertical-align: top;
  font-family: var(--mono);
  font-size: 0.82rem;
  white-space: pre-wrap;
}

.json-table th {
  background: #f6f1e2;
  font-family: var(--display);
}

.split {
  display: grid;
  gap: 0.7rem;
  grid-template-columns: 1fr 1fr;
}

.file-block {
  margin-bottom: 1rem;
  padding: 0.7rem;
  border: 1px solid #cdc5b5;
  border-radius: 12px;
  background: #fffef8;
}

.coverage-list {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.45rem;
}

.status {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  border-radius: 999px;
  padding: 0.2rem 0.5rem;
  margin-right: 0.4rem;
}

.status.implemented {
  background: #bbf7d0;
  color: #166534;
}

.status.planned {
  background: #fde68a;
  color: #92400e;
}

.site-footer {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.7rem 1.2rem 2rem;
  color: #4b5563;
}

@media (max-width: 930px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .site-nav-tools {
    align-items: stretch;
  }

  .site-nav select {
    width: 100%;
    min-width: 0;
  }

  .toc {
    position: static;
  }

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