/* -----------------------------
   Color palette + type scale
--------------------------------*/
:root {
  --color-yellow: #ffdd00;
  --color-yellow2: #ffc300;
  --color-grey: #dcdcdc;
  --color-background: #fefefe;
  --color-text: #111;
  --color-text-light: #646464;
  --color-link: #222;
  --color-link-hover: #128fe8;
  --color-header-bg: var(--color-yellow);
  --color-footer-bg: #111;
  --color-tag-bg: #e0e0e0;
  --color-tag-text: #333;

  /* Type scale */
  --type-base: 16px;
  --type-xs: calc(var(--type-base) / 2);
  --type-sm: calc(var(--type-base) * 0.75);
  --type-md: var(--type-base);
  --type-lg: calc(var(--type-base) * 1);
  --type-xl: calc(var(--type-base) * 1.8);
  --type-2xl: calc(var(--type-base) * 3);
}

/* -----------------------------
   Base styles
--------------------------------*/
body {
  font-family: 'Helvetica', sans-serif;
  font-size: var(--type-md);
  font-weight: 200;
  line-height: 1.4;
  margin: 0;
  padding: 0;
  background-color: var(--color-background);
  color: var(--color-text);
}

/* Base link reset (scoped styles below) */
a {
  color: var(--color-link);
  text-decoration: none;
}

/* Typography */
h1 {
  font-size: var(--type-2xl);
  line-height: 1.2;
}

h2 {
  font-size: var(--type-xl);
  font-weight: 600;
  line-height: 1.2;
}

h3 {
  font-size: var(--type-lg);
}

small {
  font-size: var(--type-sm);
}

.light {
  font-weight: 100;
  color: var(--color-text-light);
}

/* -----------------------------
   Content container
--------------------------------*/
.container {
  max-width: 700px;
  margin: 2rem auto;
  padding: 0 1rem;
}

/* -----------------------------
   Markdown link styling
--------------------------------*/
.container a {
  font-weight: 600;
  border-bottom: 2px solid var(--color-header-bg);
}

.container a:hover,
.container a:focus {
  color: var(--color-link-hover);
  border-bottom-color: var(--color-link-hover);
}

/* Headings that contain links */
h2 a {
  border-bottom-width: 4px;
}

h2 a:hover,
h2 a:focus {
  border-bottom-color: var(--color-link-hover);
}

/* -----------------------------
   Blockquote: quote + attribution
--------------------------------*/
.container blockquote {
  grid-column: 2 / span 10;
  background-color: var(--color-grey);
  color: var(--color-text);

  padding: 2.5rem;
  margin: 3rem 0;

  font-size: var(--type-xl);
  line-height: 1.4;
}

/* Quote text */
.container blockquote p {
  margin: 0;
}

.container blockquote p::before {
  content:"“"
}

.container blockquote p::after {
  content:"”"
}

/* Attribution */
.container blockquote cite {
  display: block;
  margin-top: 1.5rem;

  font-size: var(--type-sm);
  font-style: normal;
  color: var(--color-text);
}



/* -----------------------------
   Header / navigation
--------------------------------*/
header {
  background-color: var(--color-header-bg);
  min-height: 56px;
}

header nav a {
  margin-right: 1rem;
  color: var(--color-link);
  font-weight: 600;
  border-bottom: none;
}

header nav a:hover {
  color: var(--color-link-hover);
}

/* -----------------------------
   Lists
--------------------------------*/
ul li::marker {
  color: var(--color-yellow2);
}

/* -----------------------------
   Tags
--------------------------------*/
.tags a {
  margin-right: 0.5rem;
  font-size: 0.9em;
  background-color: var(--color-tag-bg);
  color: var(--color-tag-text);
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  border-bottom: none;
  font-weight: 500;
}

/* -----------------------------
   Grid layout
--------------------------------*/
.layout-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1.5rem;
}

/* Column spans */
.col-1  { grid-column: span 1; }
.col-2  { grid-column: span 2; }
.col-3  { grid-column: span 3; }
.col-4  { grid-column: span 4; }
.col-6  { grid-column: span 6; }
.col-8  { grid-column: span 8; }
.col-9  { grid-column: span 9; }
.col-12 { grid-column: span 12; }

/* -----------------------------
   Full-width elements
--------------------------------*/
.grid-full {
  grid-column: 1 / -1;
  width: 100vw;
  margin-left: calc(-40vw + 60%);
  padding: 0 10rem;
  box-sizing: border-box;
}

/* Neutralise markdown link styling in full-width sections */
.grid-full a {
  border-bottom: none;
}

/* -----------------------------
   Footer
--------------------------------*/
footer {
  background-color: var(--color-footer-bg);
  min-height: 224px;
  text-align: center;
  font-size: 0.9em;
  color: var(--color-text);
}

/* -----------------------------
   Responsive adjustments
--------------------------------*/
@media (max-width: 768px) {

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

  [class^="col-"] {
    grid-column: span 1 !important;
  }

  .grid-full {
    width: 100%;
    margin-left: 0;
    padding: 0 1rem;
  }

  .container {
    max-width: 100%;
    padding: 0 1.5rem;
  }
}