:root {
  --black: #000;
  --white: #fff;
  --line: 3px;
}

* {
  box-sizing: border-box;
  text-transform: lowercase;
  font-family: "courier new", "lucida console", monospace;
  letter-spacing: 0.025em;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--white);
  color: var(--black);
}

a {
  color: var(--black);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-style: double;
}

.shell {
  width: min(100%, 980px);
  margin: 0 auto;
  padding: 1rem;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.brand {
  font-size: 1.1rem;
  font-weight: 700;
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.content {
  margin-top: 1rem;
  display: grid;
  gap: 1rem;
}

.panel,
.card {
  border: var(--line) solid var(--black);
  padding: 1rem;
  background: var(--white);
}

.card {
  display: grid;
  gap: 0.75rem;
}

.stack {
  display: grid;
  gap: 0.75rem;
}

.narrow {
  max-width: 460px;
}

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

h1,
h2,
h3 {
  line-height: 1.1;
}

h1 {
  font-size: clamp(1.35rem, 3.4vw, 2rem);
}

h2 {
  font-size: clamp(1.15rem, 2.6vw, 1.55rem);
}

.meta {
  border-top: var(--line) solid var(--black);
  padding-top: 0.65rem;
}

.idea-body {
  line-height: 1.6;
  border-top: var(--line) solid var(--black);
  padding-top: 0.75rem;
}

.markdown-body > *:first-child {
  margin-top: 0;
}

.markdown-body > *:last-child {
  margin-bottom: 0;
}

.markdown-body p,
.markdown-body ul,
.markdown-body ol,
.markdown-body pre,
.markdown-body blockquote,
.markdown-body h1,
.markdown-body h2,
.markdown-body h3 {
  margin: 0 0 0.8rem;
}

.markdown-body ul,
.markdown-body ol {
  padding-left: 1.3rem;
}

.markdown-body code {
  border: var(--line) solid var(--black);
  padding: 0.08rem 0.3rem;
}

.markdown-body pre {
  border: var(--line) solid var(--black);
  padding: 0.65rem;
  overflow-x: auto;
}

.markdown-body pre code {
  border: 0;
  padding: 0;
}

.markdown-body blockquote {
  margin-left: 0;
  padding-left: 0.75rem;
  border-left: var(--line) solid var(--black);
}

.markdown-body img {
  max-width: 100%;
  height: auto;
  border: var(--line) solid var(--black);
}

label {
  font-weight: 700;
}

input,
textarea,
select,
button,
.button-link {
  font: inherit;
  border: var(--line) solid var(--black);
  background: var(--white);
  color: var(--black);
  border-radius: 0;
}

input,
textarea,
select {
  width: 100%;
  padding: 0.55rem 0.65rem;
}

textarea {
  min-height: 8rem;
  resize: vertical;
}

button,
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.8rem;
  cursor: pointer;
  text-decoration: none;
}

button,
.button-link {
  background: var(--black);
  color: var(--white);
}

button:hover,
.button-link:hover,
button:focus-visible,
.button-link:focus-visible {
  background: var(--white);
  color: var(--black);
  outline: none;
}

.ghost {
  background: var(--white);
  color: var(--black);
}

.inline-form {
  display: inline;
  margin: 0;
}

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

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border: var(--line) solid var(--black);
  padding: 0.5rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--black);
  color: var(--white);
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.error {
  border: var(--line) solid var(--black);
  padding: 0.5rem;
}

.meta-grid {
  border: var(--line) solid var(--black);
  padding: 0.65rem;
  display: grid;
  gap: 0.4rem;
}

.editor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.editor-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  border: var(--line) solid var(--black);
  padding: 0.5rem;
}

.editor-toolbar button {
  padding: 0.35rem 0.6rem;
  min-height: 2rem;
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.preview-box {
  min-height: 18rem;
}

.hint {
  font-size: 0.92rem;
}

.notice {
  border: var(--line) solid var(--black);
  padding: 0.5rem;
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 0.75rem;
}

.media-card {
  align-content: start;
}

.media-thumb-wrap {
  border: var(--line) solid var(--black);
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.media-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.snippet-input {
  font-size: 0.85rem;
}

@media (max-width: 640px) {
  .shell {
    padding: 0.75rem;
  }

  .site-header {
    align-items: flex-start;
  }

  th,
  td {
    font-size: 0.95rem;
  }

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