/* CSS Variables and Reset */
:root {
  --color-background: #121212;
  --color-text-primary: #e0e0e0;
  --color-text-secondary: #cccccc;
  --color-link: #a0a0a0;
  --color-link-hover: #ffffff;
  --spacing-base: 1rem;
  --container-padding: 1.5rem;
}

:root[data-theme="light"] {
  --color-background: #ffffff;
  --color-text-primary: #333333;
  --color-text-secondary: #666666;
  --color-link: #555555;
  --color-link-hover: #000000;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Navigation */
.nav-menu {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
  margin-top: 0;
  align-items: center;
  position: sticky;
  top: 0;
  background-color: var(--color-background);
  padding: 1rem var(--container-padding);
  margin-left: calc(-1 * var(--container-padding));
  margin-right: calc(-1 * var(--container-padding));
  z-index: 1000;
  outline: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.theme-toggle {
  background: none;
  border: none;
  color: var(--color-link);
  cursor: pointer;
  padding: 0.25rem;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease;
  outline: none;
}

.theme-toggle:hover {
  color: var(--color-link-hover);
}

.theme-toggle:focus {
  outline: none;
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.nav-menu a {
  color: var(--color-link);
  text-decoration: none;
  font-size: 0.9rem;
  text-transform: lowercase;
  transition: color 0.2s ease;
}

.nav-menu a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

.nav-menu a.active {
  color: var(--color-link-hover);
}

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

/* Base styles */
body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--color-background);
  color: var(--color-text-primary);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: var(--container-padding);
  min-height: 100vh;
  margin: 0;
  line-height: 1.6;
  transition: none;
}

/* Layout */
.container {
  max-width: 43.75rem;
  text-align: left;
  padding: var(--container-padding);
  width: 100%;
  margin: 0 auto;
  padding-top: 0;
}

/* Typography */
h1 {
  font-size: 1.5rem;
  margin-bottom: calc(var(--spacing-base) * 1.25);
  color: #ffffff;
  font-weight: 500;
}

h2 {
  font-size: 1.5rem;
  margin-bottom: calc(var(--spacing-base) * 1.25);
  color: #ffffff;
}

h3 {
  font-size: 1.2rem;
  margin-bottom: calc(var(--spacing-base));
  color: #ffffff;
  font-weight: 500;
}

/* Images */
img {
  width: 100%;
  max-width: 15rem;
  height: auto;
  border-radius: 0.25rem;
  margin-bottom: calc(var(--spacing-base) * 1.5);
}

img + img {
  margin-top: calc(var(--spacing-base) * 1.5);
}

/* Project Images */
.content img {
  max-width: 100%;
}

/* Content */
.content p {
  font-size: 1rem;
  margin-bottom: calc(var(--spacing-base) * 0.9375);
  color: var(--color-text-secondary);
}

.content a {
  color: var(--color-link);
  text-decoration: none;
  transition: color 0.2s ease;
  font-weight: 500;
}

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

/* Links */
.links {
  list-style-type: none;
  padding: 0;
  margin: calc(var(--spacing-base) * 1.25) 0;
}

.links li {
  margin-bottom: calc(var(--spacing-base) * 0.625);
}

.links a {
  text-decoration: none;
  color: var(--color-link);
  font-weight: 600;
  transition: color 0.2s ease;
  padding: 0.25rem 0;
  display: inline-block;
}

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

/* Media Queries */
@media screen and (max-width: 48rem) {
  :root {
    --container-padding: 1.25rem;
  }
  
  .container {
    max-width: 100%;
  }
  
  h1 {
    font-size: 1.25rem;
  }
  
  img {
    max-width: 15rem;
  }
}

/* Reading List */
.reading-list {
  list-style: none;
  margin: 1.5rem 0;
}

.reading-list li {
  margin-bottom: 1rem;
  background: rgba(0, 0, 0, 0.03);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 6px;
  transition: background-color 0.2s ease;
}

:root[data-theme="dark"] .reading-list li {
  background: rgba(255, 255, 255, 0.05);
  border-color: transparent;
}

.reading-list li:hover {
  background: rgba(0, 0, 0, 0.05);
}

:root[data-theme="dark"] .reading-list li:hover {
  background: rgba(255, 255, 255, 0.08);
}

.reading-list a {
  color: var(--color-link);
  text-decoration: none;
  transition: color 0.2s ease;
  padding: 1rem;
  display: block;
}

.reading-list a:hover {
  color: var(--color-link-hover);
}

.link-content {
  display: flex;
  flex-direction: column;
}

.link-title {
  color: var(--color-text-primary);
  font-weight: 500;
  font-size: 1rem;
  margin-bottom: 0.25rem;
  display: block;
}

.link-author {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  display: block;
  margin-bottom: 0.25rem;
}

.link-url {
  color: var(--color-link);
  font-size: 0.85rem;
  opacity: 0.7;
}

.book-title {
  color: var(--color-text-primary);
  font-weight: 500;
  display: block;
}

.book-author {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  display: block;
  margin-top: 0.25rem;
}

/* Content List */
.content-list {
  list-style: none;
  margin: 0.5rem 0 0 1rem;
}

.content-list li {
  margin-bottom: 0.5rem;
  color: var(--color-text-secondary);
}

.content-list li::before {
  content: "•";
  color: var(--color-text-secondary);
  display: inline-block;
  width: 1rem;
  margin-left: -1rem;
}

/* Photo Grid */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin: 2rem 0;
}

.photo-grid figure {
  margin: 0;
  position: relative;
}

.photo-grid img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  margin: 0;
  border-radius: 0;
  display: block;
}

.photo-grid figcaption {
  margin-top: 0.75rem;
  color: var(--color-text-secondary);
  font-size: 1rem;
}

@media screen and (max-width: 48rem) {
  .photo-grid {
    gap: 1rem;
  }
  
  .photo-grid figcaption {
    margin-top: 0.5rem;
    font-size: 0.9rem;
  }
}

/* Blockquote */
blockquote {
  border-left: 3px solid var(--color-text-secondary);
  padding-left: 1rem;
  margin: 1.5rem 0;
  color: var(--color-text-secondary);
}

blockquote p {
  margin-bottom: 0.5rem;
}

/* Eyes Animation */
.eyes-container {
  display: none;
  gap: 1px;
  margin-right: 12px;
}

.nav-menu.sticky .eyes-container {
  display: flex;
}

.eye {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #ffffff;
  position: relative;
  border: 1.5px solid #000000;
}

:root[data-theme="dark"] .eye {
  background: #ffffff;
  border-color: #000000;
}

.pupil {
  width: 6px;
  height: 6px;
  background: #000000;
  border-radius: 50%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: transform 0.1s ease-out;
}