/* Custom overrides for Monospace Web */

/* ── Theme variables ── */

:root {
  --accent: #2F6F6D;
  --accent-hover: #3A8482;
  --font-weight-normal: 400; /* Increased for light mode */
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  --line-height: 1.575rem; /* Slightly reduced from 1.6rem */
  --paragraph-spacing: calc(var(--line-height) * 0.82); /* ~18% reduction */
  letter-spacing: 0.01em;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --accent: #4FB3AE;
    --accent-hover: #5CC3BE;
    --font-weight-normal: 300; /* Lighter in dark mode */
    --text-color: #fff;
    --text-color-alt: #aaa;
    --background-color: #000;
  }
}

:root[data-theme="light"] {
  --text-color: #111; /* Near-black for confidence */
  --text-color-alt: #555;
  --background-color: #fdfdfc; /* Extremely subtle warm tint */
  --background-color-alt: #f1f0ed;
  --accent: #2F6F6D;
  --accent-hover: #3A8482;
  --font-weight-normal: 400;
}

:root[data-theme="dark"] {
  --text-color: #e0e0e0;
  --text-color-alt: #999;
  --background-color: #0a0a0a; /* Slightly warmer than pure black */
  --background-color-alt: #161616;
  --accent: #4FB3AE;
  --accent-hover: #5CC3BE;
  --font-weight-normal: 300;
}

/* ── Base element overrides ── */

html {
  overflow-y: scroll;
}

.container {
  max-width: calc(min(90ch, round(down, 100%, 1ch)));
}

* + * {
  margin-top: var(--paragraph-spacing);
}

body {
  line-height: var(--line-height);
  font-weight: var(--font-weight-normal);
  color: var(--text-color);
  background-color: var(--background-color);
  padding-top: calc(var(--line-height) * 1.5);
  transition: background-color 0.3s ease, color 0.3s ease, padding-top 0.3s ease;
}

p {
  margin-bottom: var(--paragraph-spacing);
}

h1, h2, h3, h4, h5, h6 {
  margin-top: calc(var(--line-height) * 1.5);
  margin-bottom: var(--paragraph-spacing);
}

a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, color 0.3s ease;
}

a:link, a:visited {
  color: var(--accent);
}

a:hover {
  color: var(--accent-hover);
  border-bottom-color: var(--accent-hover);
}

code {
  color: var(--accent);
}

pre {
  background: var(--background-color-alt);
  border: 1px solid var(--text-color-alt);
  border-left: 3px solid var(--accent);
  padding: calc(var(--line-height) * 0.75) 1ch;
}

pre code {
  color: var(--text-color);
}

p code, li code {
  background: var(--background-color-alt);
  padding: 0.125rem 0.5ch;
  border-radius: 2px;
}

blockquote {
  border-left: 2px solid var(--accent);
  padding-left: 2ch;
  margin-left: 0;
  font-style: italic;
  color: var(--text-color-alt);
}

ul li::marker {
  color: var(--accent);
}

ol li::before {
  color: var(--accent);
}

table {
  border: 1px solid var(--text-color-alt);
}

th {
  background: var(--background-color-alt);
  font-weight: var(--font-weight-medium);
  color: var(--accent);
}

::selection {
  background: var(--accent);
  color: var(--background-color);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ── Header ── */

.site-header {
  padding: calc(var(--line-height) * 0.5) 0 calc(var(--line-height) * 0.75);
  margin-bottom: calc(var(--line-height) * 1.5);
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 20%, transparent);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 1ch;
  position: relative;
  transition: padding 0.3s ease;
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 2ch;
  border-top: 2px solid var(--accent);
}

.site-header nav {
  margin: 0;
  display: flex;
  gap: 2ch;
  align-items: center;
}

.site-header nav a {
  color: var(--text-color);
  border: none;
  position: relative;
  padding-left: 2ch;
  display: inline-block;
  line-height: var(--line-height);
  margin-top: 0 !important;
  font-weight: var(--font-weight-normal);
  transition: color 0.3s ease;
}

.site-header nav a::before {
  content: "▶";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  opacity: 0;
  transition: opacity 0.3s ease;
  line-height: inherit;
  font-size: 0.75em;
}

.site-header nav a:hover::before {
  opacity: 0.7;
}

.site-header nav a:hover {
  color: var(--accent-hover);
}

.site-header-end {
  display: flex;
  align-items: baseline;
  gap: 2ch;
  margin: 0;
}

/* ── Footer ── */

footer {
  margin-top: calc(var(--paragraph-spacing) * 3);
  padding-top: var(--paragraph-spacing);
  border-top: 1px solid var(--text-color-alt);
  color: var(--text-color-alt);
  font-size: 0.875rem;
}

footer a {
  color: var(--text-color-alt);
}

footer a:hover {
  color: var(--accent-hover);
}

/* ── Sections & articles ── */

section {
  margin-bottom: calc(var(--paragraph-spacing) * 2.5);
}

section h2 {
  color: var(--accent);
  margin-top: 0;
  margin-bottom: var(--paragraph-spacing);
}

.divider-section {
  border-top: 1px solid color-mix(in srgb, var(--text-color-alt) 30%, transparent);
  padding-top: var(--paragraph-spacing);
}

.section-label {
  font-size: 0.875rem;
  font-weight: var(--font-weight-normal);
  color: var(--text-color-alt);
  margin-top: 0;
  margin-bottom: calc(var(--paragraph-spacing) * 1.5);
  letter-spacing: 0.05em;
}

article {
  margin-bottom: calc(var(--paragraph-spacing) * 1.5);
}

article h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
}

article h3 a {
  color: var(--text-color);
}

article h3 a:hover {
  color: var(--accent-hover);
}

/* ── Blog post ── */

.blog-post {
  margin: 0;
}

.blog-post > header h1 {
  border-bottom: 2px solid var(--accent);
  padding-bottom: calc(var(--line-height) * 0.5);
}

.post-footer {
  margin-top: calc(var(--line-height) * 2);
  padding-top: var(--line-height);
  border-top: 1px solid var(--text-color-alt);
}

/* ── Theme toggle ── */

.theme-toggle {
  background: none;
  border: none;
  color: var(--text-color-alt);
  font-size: 0.875rem;
  font-family: inherit;
  padding: 4px;
  margin: 0;
  height: auto;
  cursor: pointer;
  transition: color 0.3s ease, transform 0.2s ease;
  display: inline-flex;
  vertical-align: middle;
  justify-content: center;
  border-radius: 4px;
  position: relative;
  top: 0.15em;
}

.theme-toggle:hover {
  color: var(--accent-hover);
  background: var(--background-color-alt);
  transform: translateY(-1px);
}

.theme-toggle svg {
  stroke-width: 1.5px;
}

.theme-toggle:active {
  transform: none;
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ── Terminal animation ── */

.terminal-tagline {
  display: inline;
  margin-top: 0 !important;
}

.terminal-cursor {
  display: inline-block;
  width: 0.6ch;
  height: 1em;
  background-color: var(--accent);
  margin: 0 0 0 0.1ch;
  animation: blink 1.6s step-end infinite;
  vertical-align: text-bottom;
  opacity: 0.7;
}

@keyframes blink {
  0%, 50% { opacity: 0.7; }
  51%, 100% { opacity: 0; }
}

.terminal-tagline.typing .terminal-cursor {
  animation: none;
  opacity: 0.7;
}

.terminal-cursor.fade-out {
  transition: opacity 0.8s ease, width 0.8s ease, margin-left 0.8s ease;
  opacity: 0;
  width: 0;
  margin-left: 0;
}

/* ── Collapsible section toggle ── */

.section-toggle {
  border: none;
  padding: 0;
  margin: 0;
}

.section-toggle summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 1ch;
}

.section-toggle summary::-webkit-details-marker {
  display: none;
}

.section-toggle summary::after {
  content: "▶";
  color: var(--accent);
  font-size: 0.65em;
  opacity: 0.5;
  transition: opacity 0.3s ease;
}

.section-toggle[open] summary::after {
  content: "▼";
}

.section-toggle summary:hover::after {
  opacity: 0.8;
}

.section-toggle li::marker {
  content: revert;
}

.section-toggle summary .section-label {
  margin-bottom: 0;
}

.section-toggle[open] summary {
  margin-bottom: var(--paragraph-spacing);
}

/* ── Hero ── */

.hero {
  margin-bottom: calc(var(--paragraph-spacing) * 1.5);
}

.hero h1 {
  margin-top: 0;
  margin-bottom: calc(var(--paragraph-spacing) * 0.25);
  font-size: 1rem;
  font-weight: var(--font-weight-bold);
}

.hero .subtitle {
  color: var(--text-color-alt);
  margin-top: 0;
  margin-bottom: 0;
}

/* ── Utility ── */

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

article .muted {
  font-size: 0.875rem;
  margin: calc(var(--line-height) * 0.25) 0 0;
}