app/src/styles/_base.css

@import "https://fonts.googleapis.com/css2?family=Source+Sans+Pro:ital,wght@0,200..900;1,200..900&display=swap";

html {
  font-size: 16px;
  line-height: 1.6;
}

.content-grid main {
  color: var(--text-color);
}

.content-grid main p {
  margin: 0 0 var(--spacing-3);
}

.content-grid main h2 {
  font-weight: 600;
  font-size: clamp(22px, 2.6vw, 32px);
  line-height: 1.2;
  margin: var(--spacing-10) 0 var(--spacing-5);
  padding-bottom: var(--spacing-2);
  border-bottom: 1px solid var(--border-color);
}

.content-grid main h3 {
  font-weight: 700;
  font-size: clamp(18px, 2.1vw, 22px);
  line-height: 1.25;
  margin: var(--spacing-8) 0 var(--spacing-4);
}

.content-grid main h4 {
  font-weight: 600;
  text-transform: uppercase;
  font-size: 14px;
  line-height: 1.2;
  margin: var(--spacing-8) 0 var(--spacing-4);
}

.content-grid main a {
  color: var(--primary-color);
  text-decoration: none;
  background: var(--sufrace-bg);
  border-bottom: 1px solid color-mix(in srgb, var(--primary-color, #007AFF) 40%, transparent);
  ;
}

.content-grid main a:hover {
  color: var(--primary-color-hover);
  border-bottom: 1px solid color-mix(in srgb, var(--primary-color, #007AFF) 40%, transparent);
  ;
}

/* External links with arrow indicator */
.content-grid main a[href^="http"]:not([href*="localhost"]):not([href*="127.0.0.1"]):not([href*="0.0.0.0"]) {
  white-space: nowrap;
}

.content-grid main a[href^="http"]:not([href*="localhost"]):not([href*="127.0.0.1"]):not([href*="0.0.0.0"])::after {
  content: "↗";
  display: inline-block;
  margin-left: 6px;
  font-size: 0.9em;
  opacity: 0.8;
  transition: opacity 0.2s ease, transform 0.2s ease;
  transform: translateY(-1px);
  font-weight: 600;
}

.content-grid main a[href^="http"]:not([href*="localhost"]):not([href*="127.0.0.1"]):not([href*="0.0.0.0"]):hover::after {
  opacity: 1;
  transform: translateY(-2px) translateX(1px);
}

/* Do not underline heading links inside the article (not the TOC) */
.content-grid main h2 a,
.content-grid main h3 a,
.content-grid main h4 a,
.content-grid main h5 a,
.content-grid main h6 a {
  color: inherit;
  border-bottom: none;
  text-decoration: none;
}

.content-grid main h2 a:hover,
.content-grid main h3 a:hover,
.content-grid main h4 a:hover,
.content-grid main h5 a:hover,
.content-grid main h6 a:hover {
  color: inherit;
  border-bottom: none;
  text-decoration: none;
}

.content-grid main ul,
.content-grid main ol {
  padding-left: 24px;
  margin: 0 0 var(--spacing-3);
}

.content-grid main li {
  margin-bottom: var(--spacing-2);
}

.content-grid main li:last-child {
  margin-bottom: 0;
}

.content-grid main blockquote {
  border-left: 2px solid var(--border-color);
  padding-left: var(--spacing-4);
  font-style: italic;
  color: var(--muted-color);
  margin: var(--spacing-4) 0;
}

.content-grid main hr {
  border: none;
  border-bottom: 1px solid var(--border-color);
  margin: var(--spacing-5) 0;
}

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

[data-footnote-ref] {
  margin-left: 4px;
}

.content-grid main mark {
  background-color: color-mix(in srgb, var(--primary-color, #007AFF) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--primary-color) 18%, transparent);
  color: inherit;
  padding: 4px 6px;
  border-radius: 4px;
  font-weight: 500;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin: 46px 0;
}

.feature-card {
  display: flex;
  flex-direction: column;
  padding: 16px;
  border: 1px solid color-mix(in srgb, var(--primary-color) 40%, transparent);
  ;
  background: color-mix(in srgb, var(--primary-color, #007AFF) 05%, transparent) !important;
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.feature-card strong {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-color);
  color: var(--primary-color) !important;
  margin-bottom: 0px !important;
}

.feature-card span {
  font-size: 12px;
  color: var(--muted-color);
  color: var(--primary-color) !important;
  margin-bottom: 0px !important;
  opacity: 1;
}

.katex .tag {
  background: none;
  border: none;
  opacity: 0.4;
}