:root {
  --shadow-header: 0 2px 30px -1px rgba(0, 0, 0, 0.05);
  --shadow-content: 0 10px 20px -1px rgba(0, 0, 0, 0.05);

  --primary: #333;
  --primary-50: #f7f8fa;
  --primary-100: #eff2f5;
  --primary-200: #e4e9ee;
  --primary-300: #c9d2dd;
  --primary-400: #aebccb;
  --primary-500: #93a5ba;
  --primary-600: #778fa9;
  --primary-700: #5b7490;
  --primary-800: #4e627a;
  --primary-900: #344252;

  --secondary: #fff;

  --tertiary: #08c;

  --border-radius-large:  1em;
  --border-radius-small:  0.33em;

  --font-up-6: 2.296em;
  --font-up-5: 2em;
  --font-up-4: 1.7511em;
  --font-up-3: 1.5157em;
  --font-up-2: 1.3195em;
  --font-up-1: 1.1487em; 
  --font-0: 1em;
  --font-down-1: 0.8706em; 
  --font-down-2: 0.7579em; 
  --font-down-3: 0.6599em;
  --font-down-4: 0.5745em;
  --font-down-5: 0.5em;
  --font-down-6: 0.4355em;
}

* { /* reset */
  box-sizing: border-box;
}

body {
  font-family: Söhne, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, sans-serif, Helvetica Neue, Arial, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol, Noto Color Emoji;
  margin: 0;
  font-size: 1.125em; /* root scale */
  line-height: 1.8;
  color: var(--primary);
  background: var(--primary-50);
}

.site-header {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  grid-template-areas: "logo site llm";
  position: sticky;
  top: 0;
  padding: 0 1em;
  align-items: center;
  background-color: var(--secondary);
  box-shadow: var(--shadow-header);
  z-index: 2;
  @media screen and (max-width: 768px) {
    grid-template-areas: "logo site" "logo llm";
    font-size: var(--font-down-1);
    padding-bottom: 0.25em;
    gap: 0 1em;
    align-items: start;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto 1fr;
  }
  @media screen and (max-width: 500px) {
    position: relative;
    grid-template-areas: "logo" "site" "llm";
  }
}

.ai-logo {
  grid-area: logo
}

.ai-logo .logo {
  height: 3.75em;
  width: auto;
  padding: 0.5em 0;
  @media screen and (max-width: 768px) {
    padding-bottom: 0;
    max-width: 180px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .ai-logo:hover #d-sparkles {
    animation: d-rainbow-sparkles 1.5s forwards ease-in-out;
  }
}

@keyframes d-rainbow-sparkles {

  0% {
    fill: #f15d22;
  }
  33% {
    fill: #fff9ae;
  }
  66% {
    fill: #00a94f;
  }
  100% {
    fill: #00aeef;
  }
}

.site-title {
  grid-area: site;
  font-size: var(--font-up-2);
  color: var(--primary);
  padding: 0 1em;
  transition: color 0.25s ease-in-out;
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: bold;
  @media screen and (max-width: 768px) {
    margin-top: 0.8em;
    line-height: 1.2;
    text-align: right;
    padding: 0;
  }
  @media screen and (max-width: 500px) {
    font-size: var(--font-up-3);
    text-align: left;
    margin-top: 0;
  }
}

.llm-name {
  grid-area: llm;
  font-size: var(--font-down-1);
  padding: 0.5em 1em;
  text-decoration: none;
  text-align: right;
  line-height: 1.2;
  color: var(--primary-600);
  @media screen and (max-width: 768px) {
    padding: 0;
  }
  @media screen and (max-width: 500px) {
    text-align: left;
    margin-top: 0;
    margin-bottom: 1.25em;
  }
}

section {
  max-width: 900px;
  margin: 4em auto 8em;
  background-color: var(--secondary);
  border-radius: var(--border-radius-large);
  box-shadow: var(--shadow-content);
  @media screen and (max-width: 768px) {
    margin-top: 0;
    border-radius: 0;
    margin-bottom: 0;
    box-shadow: none;
  }
}

.page-header {
  text-align: center;
  line-height: 1.2;
  padding: 3em 2.5em;
  @media screen and (max-width: 768px) {
    padding: 2em 1em;
    text-align: left;
  }
  @media screen and (max-width: 500px) {
    padding: 1em;
  }
}

.page-header h1 {
  margin: 0;
  font-size: var(--font-up-5);
  font-weight: normal;
  @media screen and (max-width: 768px) {
    font-size: var(--font-up-3);
  }
}

.page-header time {
  display: block;
  color: var(--primary-500);
  margin-top: 0.5em;
  @media screen and (max-width: 768px) {
    font-size: var(--font-down-1);
  }
}

article {
  border-top: 1px solid transparent;
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease-in-out;
  @media screen and (max-width: 768px) {
    border-top-color: var(--primary-100);
    border-bottom-color: transparent;
  }
}

@media screen and (min-width: 769px) {
  article:hover {
    border-top-color: var(--primary-100);
    border-bottom-color: var(--primary-100);
  }
  article:last-of-type:hover {
    border-bottom-color: transparent;
  }  
}

pre, code {
  font-family: Consolas, Menlo, Monaco, "Lucida Console", "Liberation Mono", "DejaVu Sans Mono", "Bitstream Vera Sans Mono", "Courier New", monospace;
  font-size: var(--font-down-1);
  background-color: var(--primary-50);
  font-size: inherit;
  padding: 0;
  background-color: transparent;
}

pre {
  border-radius: var(--border-radius-small);
  overflow-x: auto;
}

code {
  padding: 0.2em 0.4em;
  border-radius: var(--border-radius-small);
  background: var(--primary-50);
}

code.hljs {
  background-color: var(--primary-50);

}

h1 h2 h3 h4 h5 h6 {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  margin-bottom: 0.5em;
}

.post {
  padding: 1.5em 3em 1.5em;
  @media screen and (max-width: 768px) {
    padding: 1em;
  }
}

.post__header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: start;
  margin-bottom: 0.5em;
  gap: 0 0.5em;
}

.post__user {
  font-weight: bold;
  color: var(--primary);
}

.post__date, .post__persona {
  font-size: 0.8em;
}

.post__persona {
  color: var(--primary-600);
}

.post__content {
  line-height: 1.4;
  color: var(--primary-800);
}

.post__content p:first-child {
  margin-top: 0;
}

.post__content p:last-child {
  margin-bottom: 0.4em;
}
 
.post__date {
  color: var(--primary-500);
  margin-left: auto;
  display: none; /* hiding for now */
}

summary {
  padding: 1em;
  border-radius: var(--border-radius-small);
  cursor: pointer;
  color: var(--tertiary);
  outline: none;
}

summary:hover {
  background-color: var(--primary-100);
}

details {
  background-color: var(--primary-50);
  border-radius: var(--border-radius-small);
  transition: background-color 0.3s ease;
}

details[open] {
  padding-bottom: 0.75em;
}

details > *:not(summary) {
  padding: 0 1em;
}

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

details p {
  margin-top: 10px;
  color: var(--primary-800);
}

details[open] summary {
  color: var(--tertiary);
  border-radius: var(--border-radius-small) var(--border-radius-small) 0 0;
}

a {
  text-decoration: none;
  color: var(--tertiary);
  transition: color 0.25s ease-in-out;
}

a:hover {
  color: var(--tertiary);
  text-decoration: underline;
}

ol {
  list-style-type: decimal;
}

ul {
  list-style-type: disc;
}

@media screen and (max-width: 500px) {
  ol, ul {
    padding-left: 1.33em;
  }
}

li {
  margin-bottom: 0.75em;
  line-height: 1.6;
}

li:last-child {
  margin-bottom: 0;
}

li, p {
  overflow-wrap: break-word;
  word-wrap: break-word;
  word-break: break-word;
}