/* ============================================
   Matthew McGovern - Personal Website
   Clean Static Site Styles
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  /* Colors */
  --color-bg-dark: #1a1a2e;
  --color-bg-darker: #16213e;
  --color-bg-card: #0f0f1a;
  --color-accent: #4fc3f7;
  --color-accent-hover: #81d4fa;
  --color-text: #e0e0e0;
  --color-text-muted: #9e9e9e;
  --color-text-bright: #ffffff;
  --color-border: #2a2a4a;
  --color-code-bg: #0d1117;
  --color-success: #4caf50;
  
  /* Typography */
  --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Roboto Mono', 'Fira Code', monospace;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 5rem;
  
  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --header-height: 80px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
}

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

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

body {
  font-family: var(--font-body);
  background: var(--color-bg-dark);
  color: var(--color-text);
  line-height: 1.7;
  min-height: 100vh;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-text-bright);
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

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

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

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

/* ---------- Layout ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

.section {
  padding: var(--spacing-xxl) 0;
}

.section--alt {
  background: var(--color-bg-darker);
}

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(26, 26, 46, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: var(--spacing-md);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.header__logo img {
  height: 50px;
  width: auto;
  border-radius: 50%;
}

.header__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-bright);
  letter-spacing: 0.5px;
}

.header__title a {
  color: inherit;
}

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

/* ---------- Navigation ---------- */
.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.nav__list {
  display: flex;
  list-style: none;
  gap: var(--spacing-xs);
}

.nav__link {
  display: block;
  padding: var(--spacing-xs) var(--spacing-sm);
  color: var(--color-text);
  font-weight: 500;
  border-radius: 4px;
  transition: all var(--transition-fast);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-accent);
  background: rgba(79, 195, 247, 0.1);
}

/* Social Icons */
.social-links {
  display: flex;
  gap: var(--spacing-xs);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--color-text-muted);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.social-links a:hover {
  color: var(--color-accent);
  background: rgba(79, 195, 247, 0.1);
}

.social-links svg {
  width: 20px;
  height: 20px;
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  padding: var(--spacing-xs);
}

/* ---------- Hero Section ---------- */
.hero {
  padding: var(--spacing-xxl) 0;
  background: linear-gradient(135deg, var(--color-bg-darker) 0%, var(--color-bg-dark) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), #7c4dff, var(--color-accent));
}

.hero__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.hero__card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--spacing-lg);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.hero__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.hero__card h4 {
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ---------- About Section ---------- */
.about {
  text-align: center;
}

.about__content {
  max-width: 800px;
  margin: 0 auto;
}

.about__image {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--color-accent);
  margin-bottom: var(--spacing-md);
}

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

.about__subtitle {
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: var(--spacing-md);
}

.about__text {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  line-height: 1.8;
}

/* ---------- Interests Section ---------- */
.interests__images {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.interests__images img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: transform var(--transition-normal);
}

.interests__images img:hover {
  transform: scale(1.02);
}

/* ---------- Blog Cards ---------- */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

.post-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.post-card__content {
  padding: var(--spacing-md);
}

.post-card__title {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-xs);
}

.post-card__title a {
  color: var(--color-text-bright);
}

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

.post-card__excerpt {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: var(--spacing-sm);
}

.post-card__meta {
  display: flex;
  gap: var(--spacing-sm);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.post-card__read-more {
  display: inline-block;
  margin-top: var(--spacing-sm);
  font-weight: 500;
}

/* ---------- Single Post ---------- */
.post-header {
  text-align: center;
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
  background: var(--color-bg-darker);
  border-bottom: 1px solid var(--color-border);
}

.post-header__title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-xs);
}

.post-header__excerpt {
  color: var(--color-text-muted);
  font-size: 1.2rem;
  margin-bottom: var(--spacing-md);
}

.post-header__meta {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.post-content {
  padding: var(--spacing-xl) 0;
}

.post-content h2,
.post-content h3,
.post-content h4 {
  margin-top: var(--spacing-lg);
}

.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: var(--spacing-md) 0;
}

/* Code Blocks */
.post-content pre {
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--spacing-md);
  overflow-x: auto;
  margin: var(--spacing-md) 0;
}

.post-content code {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-accent);
}

.post-content pre code {
  color: var(--color-text);
}

/* Post Navigation */
.post-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-md);
  padding: var(--spacing-lg) 0;
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-xl);
}

.post-nav__link {
  flex: 1;
  padding: var(--spacing-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: all var(--transition-fast);
}

.post-nav__link:hover {
  border-color: var(--color-accent);
}

.post-nav__link--next {
  text-align: right;
}

.post-nav__label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.post-nav__title {
  color: var(--color-text-bright);
  font-weight: 500;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-bg-darker);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer__nav {
  display: flex;
  gap: var(--spacing-md);
}

.footer__nav a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

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

.footer__copyright {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-body);
  font-weight: 500;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-bg-dark);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-bg-dark);
}

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

.btn--outline:hover {
  background: var(--color-accent);
  color: var(--color-bg-dark);
}

/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  
  .header__inner {
    flex-wrap: wrap;
  }
  
  .nav-toggle {
    display: block;
  }
  
  .nav__list {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg-darker);
    flex-direction: column;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
  }
  
  .nav__list.active {
    display: flex;
  }
  
  .hero__grid {
    grid-template-columns: 1fr;
  }
  
  .post-nav {
    flex-direction: column;
  }
  
  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

/* ---------- Lightbox ---------- */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  z-index: 9999;
  cursor: zoom-out;
  animation: fadeIn 0.2s ease;
}

.lightbox.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox__img {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  animation: zoomIn 0.3s ease;
}

.lightbox__close {
  position: absolute;
  top: 20px;
  right: 30px;
  color: white;
  font-size: 40px;
  font-weight: 300;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
  background: none;
  border: none;
  line-height: 1;
}

.lightbox__close:hover {
  opacity: 1;
}

.lightbox__caption {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  text-align: center;
  max-width: 80%;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes zoomIn {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* Make images clickable */
.interests__images img,
.post-content figure img,
.post-content img:not(.header__logo img) {
  cursor: zoom-in;
}

/* ---------- Print Styles ---------- */
@media print {
  .header,
  .footer,
  .social-links,
  .post-nav,
  .lightbox {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
  
  a {
    color: black;
    text-decoration: underline;
  }
}