/* ============================================
   Chris Pross - Personal Website
   Minimal, clean aesthetic
   ============================================ */

/* CSS Variables */
:root {
  --color-bg: #fafafa;
  --color-bg-alt: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #666666;
  --color-text-light: #999999;
  --color-accent: #2d5a7b;
  --color-accent-hover: #1e3d54;
  --color-border: #e5e5e5;
  --color-border-light: #f0f0f0;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 5rem;

  --max-width: 720px;
  --max-width-wide: 960px;

  --transition: 0.2s ease;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

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

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

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

/* Layout */
main {
  min-height: calc(100vh - 160px);
}

.page,
.post,
.project {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
}

/* Header */
.site-header {
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border-light);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-text);
}

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

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}

.nav-links a {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  padding: var(--spacing-xs) 0;
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

/* Hero */
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-md);
  text-align: center;
}

.hero h1 {
  font-size: 2.75rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.hero .tagline {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 500px;
  margin: 0 auto var(--spacing-lg);
}

.hero-links {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: 4px;
  transition: all var(--transition);
}

.btn:not(.btn-outline) {
  background: var(--color-accent);
  color: white;
}

.btn:not(.btn-outline):hover {
  background: var(--color-accent-hover);
  color: white;
}

.btn-outline {
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

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

/* Home sections */
.home-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
  border-top: 1px solid var(--color-border-light);
}

.home-section h2 {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.recent-posts,
.recent-work {
  list-style: none;
}

.recent-posts li,
.recent-work li {
  border-bottom: 1px solid var(--color-border-light);
}

.recent-posts a,
.recent-work a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--spacing-sm) 0;
  color: var(--color-text);
  gap: var(--spacing-md);
}

.recent-posts a:hover .post-title,
.recent-work a:hover .project-title {
  color: var(--color-accent);
}

.post-date,
.project-description {
  color: var(--color-text-light);
  font-size: 0.875rem;
  flex-shrink: 0;
}

.recent-work .project-description {
  text-align: right;
  max-width: 50%;
}

.view-all {
  display: inline-block;
  margin-top: var(--spacing-md);
  font-size: 0.9375rem;
}

/* Page header */
.page-header {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
}

.page-header h1 {
  font-size: 2rem;
}

.subtitle {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  margin-top: var(--spacing-xs);
}

/* Page content */
.page-content h2 {
  margin-top: var(--spacing-lg);
}

.page-content ul,
.page-content ol {
  margin-left: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.page-content li {
  margin-bottom: var(--spacing-xs);
}

/* Post */
.post-header {
  margin-bottom: var(--spacing-xl);
}

.post-header time {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xs);
}

.post-header h1 {
  font-size: 2rem;
  margin-bottom: var(--spacing-xs);
}

.post-description {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}

.post-content {
  font-size: 1.0625rem;
  line-height: 1.7;
}

.post-content p {
  margin-bottom: var(--spacing-md);
}

.post-content h2 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
}

.post-content blockquote {
  border-left: 3px solid var(--color-border);
  padding-left: var(--spacing-md);
  color: var(--color-text-muted);
  font-style: italic;
  margin: var(--spacing-md) 0;
}

.post-content pre {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  padding: var(--spacing-sm);
  overflow-x: auto;
  border-radius: 4px;
  margin: var(--spacing-md) 0;
}

.post-content code {
  font-family: 'SF Mono', Monaco, monospace;
  font-size: 0.875em;
}

.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

.post-footer {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border-light);
}

/* Work grid */
.work-grid {
  display: grid;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.work-card {
  padding: var(--spacing-md);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  border-radius: 4px;
  transition: border-color var(--transition);
}

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

.work-card h3 {
  margin-bottom: var(--spacing-xs);
}

.work-card h3 a {
  color: var(--color-text);
}

.work-card h3 a:hover {
  color: var(--color-accent);
}

.work-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-sm);
}

/* Tags */
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.tag {
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  background: var(--color-border-light);
  color: var(--color-text-muted);
  border-radius: 3px;
}

/* Project */
.project-header {
  margin-bottom: var(--spacing-xl);
}

.project-header h1 {
  font-size: 2rem;
  margin-bottom: var(--spacing-xs);
}

.project-header .project-description {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.project-content {
  font-size: 1.0625rem;
  line-height: 1.7;
}

.project-footer {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border-light);
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.project-link {
  font-weight: 500;
}

/* Writing archive */
.archive {
  margin-top: var(--spacing-lg);
}

.archive-year {
  border-bottom: 1px solid var(--color-border-light);
}

.year-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) 0;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  text-align: left;
}

.year-label {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-text);
}

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

.toggle-icon {
  margin-left: auto;
  font-size: 1.25rem;
  color: var(--color-text-muted);
  transition: transform var(--transition);
}

.year-toggle[aria-expanded="true"] .toggle-icon {
  transform: rotate(45deg);
}

.year-content {
  display: none;
  padding-bottom: var(--spacing-md);
}

.year-content.open {
  display: block;
}

.archive-month {
  margin-bottom: var(--spacing-md);
}

.month-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.archive .post-list {
  list-style: none;
}

.archive .post-list li {
  border-bottom: none;
}

.archive .post-list a {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-xs) 0;
  color: var(--color-text);
}

.archive .post-list a:hover .post-title {
  color: var(--color-accent);
}

.archive .post-list .post-date {
  color: var(--color-text-light);
  font-size: 0.875rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border-light);
  padding: var(--spacing-lg) var(--spacing-md);
  text-align: center;
}

.site-footer p {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin: 0;
}

/* Responsive */
@media (max-width: 640px) {
  html {
    font-size: 15px;
  }

  .nav-links {
    display: flex;
  }

  .hero {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .hero h1 {
    font-size: 2rem;
  }

  .recent-posts a,
  .recent-work a {
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  .recent-work .project-description {
    text-align: left;
    max-width: 100%;
  }
}