/* Dracula Theme - Terminal Aesthetic */
:root {
  /* Colors */
  --color-text: #ffffff;
  --color-background: #282a36;
  --color-muted: #8394ca;
  --color-surface: #323442;
  --color-primary: #ff79c6;
  --color-secondary: #8be9fd;
  --color-success: #50fa7b;
  --color-error: #ff5555;
  --color-selection: #44475a;
  --color-comment: #6272a4;
  --color-cyan: #8be9fd;
  --color-green: #50fa7b;
  --color-orange: #ffb86c;
  --color-pink: #ff79c6;
  --color-purple: #bd93f9;
  --color-red: #ff5555;
  --color-yellow: #f1fa8c;

  /* Layout */
  --sidebar-width: 280px;
  --header-height: 48px;
  --spacing-unit: 8px;
  --max-width: 1200px;

  /* Typography */
  --font-mono: 'Inconsolata', 'Courier New', monospace;

  /* Transitions */
  --transition-speed: 0.2s;

  /* Breakpoints */
  --bp-small: 40em;   /* 640px */
  --bp-medium: 52em;  /* 832px */
  --bp-large: 64em;   /* 1024px */
}

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

/* Base */
html {
  font-size: 16px;
}

body {
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: calc(var(--spacing-unit) * 2);
}

h1 {
  font-size: 2.5rem;
  color: var(--color-primary);
}

h2 {
  font-size: 1.75rem;
  color: var(--color-secondary);
}

h2::before {
  content: '→ ';
  color: var(--color-success);
  margin-right: var(--spacing-unit);
}

h2::after {
  content: '()';
  color: var(--color-secondary);
  margin-left: 4px;
}

h3 {
  font-size: 1.25rem;
  color: var(--color-text);
}

p {
  margin-bottom: calc(var(--spacing-unit) * 3);
}

a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color var(--transition-speed);
}

a:hover {
  color: var(--color-primary);
}

strong {
  font-weight: 700;
  color: var(--color-text);
}

ul, ol {
  margin-left: calc(var(--spacing-unit) * 4);
  margin-bottom: calc(var(--spacing-unit) * 3);
}

li {
  margin-bottom: calc(var(--spacing-unit) * 1);
}

code {
  font-family: var(--font-mono);
  background-color: var(--color-surface);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.9em;
}

/* Layout */
.site-wrapper {
  min-height: 100vh;
}

/* Sidebar Navigation */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background-color: var(--color-surface);
  padding: calc(var(--spacing-unit) * 4);
  z-index: 100;
  display: none;
}

@media (min-width: 64em) {
  .sidebar {
    display: block;
  }
}

.sidebar-header {
  margin-bottom: calc(var(--spacing-unit) * 6);
}

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-success);
  display: block;
}

.site-title:hover {
  color: var(--color-cyan);
}

.sidebar-nav ul {
  list-style: none;
  margin: 0;
}

.sidebar-nav li {
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.sidebar-nav a {
  display: block;
  color: var(--color-muted);
  text-align: right;
  transition: color var(--transition-speed);
}

.sidebar-nav a::after {
  content: ' -';
  color: var(--color-comment);
}

.sidebar-nav a:hover {
  color: var(--color-text);
}

.sidebar-nav a.active {
  color: var(--color-primary);
  pointer-events: none;
}

/* Mobile Header */
.mobile-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 calc(var(--spacing-unit) * 3);
  z-index: 100;
}

@media (min-width: 64em) {
  .mobile-header {
    display: none;
  }
}

.mobile-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-success);
}

.mobile-nav ul {
  list-style: none;
  margin: 0;
  display: flex;
  gap: calc(var(--spacing-unit) * 2);
}

.mobile-nav a {
  color: var(--color-muted);
  font-size: 0.875rem;
}

.mobile-nav a::before {
  content: '- ';
  color: var(--color-comment);
}

.mobile-nav a.active {
  color: var(--color-primary);
}

/* Main Content */
.main-content {
  padding: calc(var(--spacing-unit) * 6) calc(var(--spacing-unit) * 4);
}

@media (min-width: 64em) {
  .main-content {
    margin-left: var(--sidebar-width);
    padding: calc(var(--spacing-unit) * 8) calc(var(--spacing-unit) * 6);
  }
}

@media (max-width: 63.9em) {
  .main-content {
    margin-top: var(--header-height);
  }
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* Badge */
.badge {
  display: inline-block;
  padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 3);
  background-color: var(--color-success);
  color: var(--color-background);
  font-weight: 700;
  margin-bottom: calc(var(--spacing-unit) * 6);
}

/* Cards */
.card {
  background-color: var(--color-surface);
  padding: calc(var(--spacing-unit) * 4);
  margin-bottom: calc(var(--spacing-unit) * 4);
  border-left: 4px solid var(--color-muted);
  transition: border-color var(--transition-speed);
}

.card:hover {
  border-left-color: var(--color-primary);
}

.card.featured {
  border-left-color: var(--color-success);
}

/* Publication Card */
.publication-card {
  background-color: var(--color-surface);
  padding: calc(var(--spacing-unit) * 4);
  margin-bottom: calc(var(--spacing-unit) * 4);
  border-left: 4px solid var(--color-comment);
  transition: border-color var(--transition-speed);
}

.publication-card:hover {
  border-left-color: var(--color-primary);
}

.publication-card.featured {
  border-left-color: var(--color-success);
}

.publication-meta {
  color: var(--color-muted);
  font-size: 0.875rem;
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.publication-venue {
  color: var(--color-cyan);
  font-weight: 700;
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.publication-authors {
  color: var(--color-muted);
  font-size: 0.875rem;
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.publication-links {
  display: flex;
  gap: calc(var(--spacing-unit) * 2);
  margin-top: calc(var(--spacing-unit) * 3);
}

.publication-links a {
  padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 2);
  background-color: var(--color-background);
  border: 1px solid var(--color-selection);
  color: var(--color-secondary);
  font-size: 0.875rem;
  transition: all var(--transition-speed);
}

.publication-links a:hover {
  background-color: var(--color-selection);
  color: var(--color-primary);
}

/* Theme Badges */
.theme-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-unit);
  margin-top: calc(var(--spacing-unit) * 2);
}

.theme-badge {
  padding: 4px calc(var(--spacing-unit) * 1.5);
  background-color: var(--color-background);
  color: var(--color-secondary);
  font-size: 0.75rem;
  border: 1px solid var(--color-selection);
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: calc(var(--spacing-unit) * 3);
  margin: calc(var(--spacing-unit) * 6) 0;
}

.stat-card {
  background-color: var(--color-surface);
  padding: calc(var(--spacing-unit) * 4);
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-success);
  margin-bottom: calc(var(--spacing-unit) * 1);
}

.stat-label {
  color: var(--color-muted);
  font-size: 0.875rem;
}

/* Timeline */
.timeline {
  margin-bottom: calc(var(--spacing-unit) * 10);
}

.timeline-year {
  margin-bottom: calc(var(--spacing-unit) * 8);
}

.year-marker {
  display: flex;
  align-items: baseline;
  gap: calc(var(--spacing-unit) * 2);
  margin-bottom: calc(var(--spacing-unit) * 4);
  padding-bottom: calc(var(--spacing-unit) * 2);
  border-bottom: 2px solid var(--color-surface);
}

.year-label {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-secondary);
}

.year-count {
  color: var(--color-muted);
  font-size: 0.875rem;
}

.year-content {
  display: grid;
  gap: calc(var(--spacing-unit) * 3);
  padding-left: calc(var(--spacing-unit) * 4);
  border-left: 2px solid var(--color-selection);
}

.timeline-event {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: calc(var(--spacing-unit) * 3);
  position: relative;
}

.timeline-event::before {
  content: '';
  position: absolute;
  left: -22px;
  top: 8px;
  width: 12px;
  height: 12px;
  background-color: var(--color-primary);
  border: 2px solid var(--color-background);
  border-radius: 50%;
}

.event-date {
  color: var(--color-muted);
  font-size: 0.875rem;
  padding-top: 4px;
}

.event-content {
  background-color: var(--color-surface);
  padding: calc(var(--spacing-unit) * 3);
}

.event-title {
  color: var(--color-text);
  font-size: 1.125rem;
  margin-bottom: calc(var(--spacing-unit) * 1);
}

.event-title::before,
.event-title::after {
  content: none;
}

.event-venue {
  color: var(--color-cyan);
  font-weight: 700;
  margin-bottom: calc(var(--spacing-unit) * 2);
}

/* Sections */
section {
  margin-bottom: calc(var(--spacing-unit) * 8);
}

/* Two-column layout */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: calc(var(--spacing-unit) * 6);
  margin: calc(var(--spacing-unit) * 6) 0;
}

@media (max-width: 52em) {
  .two-col {
    grid-template-columns: 1fr;
  }
}

/* Utility */
.intro {
  font-size: 1.125rem;
  color: var(--color-muted);
  margin-bottom: calc(var(--spacing-unit) * 6);
}

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

.highlight {
  color: var(--color-success);
}