:root {
  --color-primary: #0e8de6;
  --color-bg: #ffffff;
  --color-text: #212121;
  --color-muted: #767676;
  --color-heading: #212121;
  --color-link: var(--color-primary);
  --color-code-bg: #f5f5f5;
  --color-border: #e2e2e2;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue",
    sans-serif;
  --font-heading: var(--font-body);
  --font-mono: Menlo, Monaco, "Liberation Mono", "Courier New", monospace;
  --max-width: 672px;
}

:root[data-theme="dark"] {
  --color-bg: #111111;
  --color-text: #e0e0e0;
  --color-muted: #999999;
  --color-heading: #f5f5f5;
  --color-code-bg: #1e1e1e;
  --color-border: #333333;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-heading);
  margin-top: 1.5em;
  margin-bottom: 0.5em;
  font-weight: 600;
}

h1 {
  font-size: 2.25em;
  line-height: 1.2;
}

h2 {
  font-size: 1.75em;
  line-height: 1.3;
}

h3 {
  font-size: 1.4em;
}

p {
  margin-bottom: 1em;
}

pre {
  background: var(--color-code-bg);
  padding: 1em;
  overflow-x: auto;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.9em;
}

code {
  font-family: var(--font-mono);
  background: var(--color-code-bg);
  padding: 0.1em 0.3em;
  border-radius: 3px;
  font-size: 0.9em;
}

pre code {
  background: none;
  padding: 0;
}

ul, ol {
  padding-left: 1.5em;
  margin-bottom: 1em;
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2em 0;
}

/* Layout */
.site-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  padding: 1.5rem 1.5rem 0;
  max-width: 48em;
  margin: 0 auto;
}

.site-header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.site-header-title {
  font-size: 1.1em;
  font-weight: 600;
  flex: 1;
}

.site-header-title a {
  color: var(--color-heading);
  text-decoration: none;
}

.site-header-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-shrink: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25em;
  font-size: 0.95em;
}

.site-nav a {
  font-family: var(--font-heading);
  font-weight: 600;
  text-decoration: none;
  color: var(--color-link);
}

.site-nav a:hover {
  text-decoration: underline;
}

.site-nav .nav-sep {
  color: var(--color-muted);
}

.theme-toggle {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  position: relative;
  width: 48px;
  height: 24px;
  border-radius: 12px;
  overflow: hidden;
  outline: none;
}

.theme-toggle::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: #000;
  transition: background-color 0.25s ease;
}

.theme-toggle .theme-icons {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0 3px;
  z-index: 1;
  font-size: 10px;
  color: #fff;
}

.theme-toggle .theme-knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background-color: #fff;
  border-radius: 50%;
  z-index: 2;
  transition: transform 0.25s ease;
}

[data-theme="dark"] .theme-toggle::before {
  background-color: #000;
}

[data-theme="light"] .theme-toggle::before {
  background-color: #ffffff;
}

[data-theme="light"] .theme-toggle .theme-icons {
  color: #000;
}

[data-theme="light"] .theme-toggle .theme-knob {
  transform: translateX(24px);
}

.site-bio {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95em;
}

.site-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

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

.site-bio-text a {
  color: var(--color-link);
}

.site-main {
  flex: 1;
  max-width: var(--max-width);
  margin: 2rem auto;
  padding: 0 1.5rem;
  width: 100%;
}

.site-footer {
  padding: 2rem 1.5rem;
  font-size: 0.85em;
  color: var(--color-muted);
}

/* Bio (header area) */
.site-bio {
  max-width: 48em;
  margin: 0 auto;
  padding: 0 1.5rem 0.75rem;
  font-size: 0.95em;
}

/* Blog post list */
.post-list {
  list-style: none;
  padding: 0;
}

.post-list li {
  margin-bottom: 0.75em;
}

.post-list a {
  font-weight: 600;
  font-size: 1.1em;
}

.post-date {
  display: block;
  font-size: 0.85em;
  color: var(--color-muted);
}

/* Notes list */
.notes-list {
  list-style: none;
  padding: 0;
}

.notes-list li {
  margin-bottom: 0.5em;
}

/* External link style */
.ext-link {
  font-family: var(--font-heading);
  font-weight: 600;
  text-decoration: none;
}

.ext-link:hover {
  text-decoration: underline;
}

/* Resume styles */
.resume-section {
  border-top: double gray;
  padding-top: 0.5em;
  margin-top: 1em;
}

.resume-company {
  border-top: thin solid gray;
  padding-top: 0.5em;
  margin-bottom: 0.7em;
  font-weight: 700;
}

.resume-period {
  margin-top: 0.2em;
  margin-bottom: 0.2em;
}

.resume-position {
  margin-top: 0.2em;
  margin-bottom: 0.2em;
  font-weight: 600;
}

.resume-diploma {
  font-size: 1.2em;
  font-weight: 300;
  margin-bottom: 1em;
}

/* Para wrapper */
.para-wrapper {
  margin-left: 1.5rem;
  margin-right: auto;
}

/* TOC sidebar */
.toc-container {
  position: fixed;
  left: calc(67%);
  top: 15%;
  max-height: 70vh;
  max-width: 30em;
  display: flex;
  font-family: var(--font-heading);
  font-weight: 600;
}

.toc-inner {
  overflow: hidden;
  overflow-y: auto;
}

.toc-container ul {
  list-style: none;
  padding-left: 1em;
  margin: 0.5em 0;
}

.toc-container a {
  text-decoration: none;
  font-size: 0.9em;
}

.toc-container a:hover {
  text-decoration: underline;
}