/* CSS Variables */
:root {
  --font-family: -apple-system, "system-ui", "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
  --font-size: 16px;
  --line-height: 1.7;
  
  /* Layout */
  --sidebar-width: 320px;
  --content-max-width: 936px;
  --layout-max-width: 1500px;
  --spacing: 1.5rem;
  --spacing-lg: 2.5rem;
  --content-padding: 3rem;
  
  /* Light theme colors */
  --bg-primary: #ffffff;
  --bg-sidebar: #f8f9fa;
  --text-primary: #1a1a1a;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --border-color: #e5e7eb;
  --accent-color: #2563eb;
  --accent-hover: #1d4ed8;
}

[data-theme="dark"] {
  --bg-primary: #0f0f0f;
  --bg-sidebar: #1a1a1a;
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --border-color: #374151;
  --accent-color: #60a5fa;
  --accent-hover: #93c5fd;
}

/* Reset Pico defaults */
:root {
  --pico-font-family: var(--font-family);
  --pico-font-size: var(--font-size);
  --pico-line-height: var(--line-height);
  --pico-border-radius: 0;
  --pico-box-shadow: none;
}

/* Reset article/section box styling from Pico */
article,
section {
  background: transparent;
  box-shadow: none;
  border: none;
  border-radius: 0;
  padding: 0;
  margin-bottom: var(--spacing);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size);
  line-height: var(--line-height);
  background: var(--bg-sidebar);
  color: var(--text-primary);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Page wrapper - centered layout with split background */
.page-wrapper {
  max-width: var(--layout-max-width);
  margin: 0 auto;
  min-height: 100vh;
  position: relative;
}

/* Cross Divider - horizontal line spanning full viewport */
.cross-divider {
  position: relative;
  height: 1px;
  background: var(--border-color);
}

.cross-divider::before,
.cross-divider::after {
  content: '';
  position: absolute;
  top: 0;
  height: 1px;
  background: var(--border-color);
}

.cross-divider::before {
  right: 100%;
  width: 100vw;
}

.cross-divider::after {
  left: 100%;
  width: 100vw;
}

/* Top Row */
.top-row {
  display: flex;
}

.top-left {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--bg-sidebar);
  padding: var(--content-padding) var(--spacing);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border-right: 1px solid var(--border-color);
}

.top-left h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 0.5rem 0;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.top-left .title {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

.top-right {
  width: var(--content-max-width);
  background: var(--bg-primary);
  padding: var(--content-padding);
  display: flex;
  justify-content: flex-end;
  align-items: flex-start;
}

/* Avatar - 200px, centered */
.avatar {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: var(--spacing);
  border: 3px solid var(--border-color);
}

/* Controls */
.content-controls {
  display: flex;
  gap: 1rem;
}

.control-btn {
  background: transparent;
  border: none;
  padding: 0.25rem;
  cursor: pointer;
  font-size: 1.25rem;
  color: var(--text-muted);
  transition: color 0.2s ease;
  line-height: 1;
  outline: none;
}

.control-btn:hover {
  color: var(--accent-color);
}

.control-btn:focus {
  outline: none;
}

/* Theme toggle icons */
#theme-toggle .icon-dark {
  display: none;
}

[data-theme="dark"] #theme-toggle .icon-light {
  display: none;
}

[data-theme="dark"] #theme-toggle .icon-dark {
  display: inline;
}

/* Bottom Row */
.bottom-row {
  display: flex;
  flex: 1;
}

.bottom-left {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--bg-sidebar);
  padding: var(--content-padding) var(--spacing);
  border-right: 1px solid var(--border-color);
}

.tagline {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0 0 var(--spacing-lg) 0;
  font-style: italic;
  line-height: 1.6;
  text-align: center;
}

/* Sidebar Links */
.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sidebar-links a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.sidebar-links a:hover {
  color: var(--accent-color);
}

.sidebar-links svg {
  flex-shrink: 0;
}

/* Main Content - reset Pico styles */
.content {
  width: var(--content-max-width);
  flex-shrink: 0;
  padding: var(--content-padding);
  background: var(--bg-primary);
  box-shadow: none;
  border: none;
  border-radius: 0;
}

/* Reset article styles from Pico */
.resume {
  max-width: 100%;
  background: transparent;
  box-shadow: none;
  border: none;
  border-radius: 0;
  padding: 0;
  margin: 0;
}

.resume[hidden] {
  display: none;
}

/* Typography */
h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 1rem 0;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 0.25rem 0;
}

p {
  margin: 0 0 1rem 0;
  color: var(--text-primary);
}

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

/* Horizontal Rules */
hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: var(--spacing-lg) 0;
}

/* Job entries */
.job {
  margin-bottom: var(--spacing-lg);
}

.job:last-child {
  margin-bottom: 0;
}

.job-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.job-header-left {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.job-header h3 {
  margin: 0;
}

.job-title {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.job-meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Lists */
ul {
  margin: 0;
  padding-left: 1.25rem;
}

li {
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

li:last-child {
  margin-bottom: 0;
}

/* Education entries */
.edu {
  margin-bottom: 1rem;
}

.edu:last-child {
  margin-bottom: 0;
}

.edu-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.edu-header-left {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.edu-header h3 {
  margin: 0;
}

.edu-degree {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.edu-year {
  font-size: 0.8125rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Links */
a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.patent-link {
  display: inline-flex;
  align-items: center;
  vertical-align: middle;
  margin-left: 0.25rem;
  color: var(--text-primary);
}

.patent-link:hover {
  color: var(--accent-color);
}

.patent-link svg {
  vertical-align: middle;
}

/* Footer */
.footer {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing);
  border-top: 1px solid var(--border-color);
}

.footer p {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --content-padding: 1.5rem;
  }

  .page-wrapper {
    background: var(--bg-primary);
  }

  .top-row {
    flex-direction: column;
  }

  /* Mobile: controls bar at top */
  .top-right {
    order: -1;
    width: 100%;
    padding: 0.75rem var(--spacing);
    justify-content: flex-end;
    background: var(--bg-sidebar);
    border-bottom: 1px solid var(--border-color);
  }

  .top-left {
    width: 100%;
    border-right: none;
    border-bottom: none;
    padding-top: var(--spacing);
  }

  .avatar {
    width: 140px;
    height: 140px;
  }

  .cross-divider {
    display: none;
  }

  .bottom-row {
    flex-direction: column;
  }

  .bottom-left {
    width: 100%;
    border-right: none;
    text-align: center;
    padding: var(--spacing);
  }

  .tagline {
    margin-bottom: var(--spacing);
  }

  .sidebar-links {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }

  .content {
    width: 100%;
    padding: var(--spacing);
    max-width: 100%;
  }

  .job-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .edu-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }
}

/* Print styles */
@media print {
  .top-left,
  .bottom-left,
  .top-right {
    display: none;
  }

  .cross-divider {
    display: none;
  }

  .content {
    padding: 0;
    max-width: 100%;
  }

  hr {
    border-top-color: #ccc;
  }

  a {
    color: inherit;
    text-decoration: underline;
  }
}