/**
 * Layout Styles
 * Grid systems, header, sidebar, sections, and responsive layouts
 */

/* ===== HEADER ===== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-surface);
  border-bottom: var(--border-width-md) solid var(--color-border);
  z-index: var(--z-sticky);
  transition: transform var(--duration-base) var(--ease-out);
}

.header-content {
  max-width: var(--container-xl);
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--section-padding-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  color: var(--color-accent-primary);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 2px;
}

/* Header hide on scroll down (optional enhancement) */
.header.header-hidden {
  transform: translateY(-100%);
}

/* ===== SIDEBAR NAVIGATION ===== */

.sidebar-nav {
  position: fixed;
  left: var(--space-lg);
  top: 50%;
  transform: translateY(-50%);
  z-index: var(--z-fixed);
  background-color: var(--color-surface);
  padding: var(--space-md);
  border: var(--border-width-md) solid var(--color-border);
  box-shadow: var(--shadow-md);
  min-width: var(--sidebar-width);
}

.timeline-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.timeline-item {
  position: relative;
}

.timeline-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background-color: transparent;
  color: var(--color-text-secondary);
  border: none;
  text-align: left;
  font-size: var(--text-sm);
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
}

.timeline-btn:hover {
  background-color: var(--color-sage-lightest);
  color: var(--color-text-primary);
}

.timeline-btn:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: -2px;
}

.timeline-btn.active {
  background-color: var(--color-sage-light);
  color: var(--color-text-primary);
  font-weight: var(--weight-semibold);
}

.timeline-node {
  width: 8px;
  height: 8px;
  background-color: var(--color-border);
  border: 2px solid var(--color-border);
  flex-shrink: 0;
  transition: all var(--duration-fast) var(--ease-out);
}

.timeline-btn.active .timeline-node {
  background-color: var(--color-accent-primary);
  border-color: var(--color-accent-primary);
  animation: blink 2s infinite;
}

.timeline-label {
  flex: 1;
  font-family: var(--font-body);
}

/* Theme toggle button in sidebar */
.theme-toggle {
  width: 100%;
  padding: var(--space-sm);
  background-color: var(--color-charcoal);
  border: var(--border-width-sm) solid var(--color-charcoal-dark);
  margin-top: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  background-color: var(--color-charcoal-dark);
}

.theme-icon::before {
  content: '◐';
  font-size: var(--text-lg);
  color: var(--color-cream);
}

/* ===== MAIN CONTENT AREA ===== */

.main-content {
  margin-top: var(--header-height);
  margin-left: calc(var(--sidebar-width) + var(--space-lg) * 2);
  padding: var(--space-lg);
  min-height: calc(100vh - var(--header-height));
}

/* ===== SECTIONS ===== */

.section {
  padding: var(--section-padding-y) 0;
  scroll-margin-top: calc(var(--header-height) + var(--space-lg));
}

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

.section-title {
  display: inline-block;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-accent-primary);
  color: white;
  margin-bottom: var(--space-xl);
  font-size: var(--text-2xl);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -4px;
  right: -4px;
  left: 4px;
  height: 4px;
  background-color: var(--color-sage-darkest);
}

/* ===== HERO SECTION ===== */

.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: var(--space-4xl) var(--section-padding-x);
}

.hero-content {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-md);
  max-width: var(--container-lg);
  width: 100%;
  position: relative;
  z-index: var(--z-base);
}

.hero-text {
  flex: 0 1 auto;
  text-align: left;
  position: relative;
}

.hero-title {
  font-size: clamp(var(--text-3xl), 5vw, var(--text-4xl));
  margin-bottom: var(--space-md);
  color: var(--color-accent-primary);
  text-transform: uppercase;
  letter-spacing: 4px;
}

.hero-tagline {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
  line-height: var(--leading-relaxed);
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: flex-start;
  flex-wrap: wrap;
}

/* Profile Picture Styles */
.hero-image {
  flex-shrink: 0;
  position: relative;
}

.profile-picture-container {
  width: 280px;
  height: 280px;
  background-color: var(--color-surface);
  padding: var(--space-sm);
  position: relative;
  overflow: hidden;
}

.profile-picture {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  image-rendering: auto;
}

/* Decorative boxes around profile picture */
.pixel-accent-3 {
  top: -30px;
  right: -30px;
  width: 40px;
  height: 40px;
  transform: rotate(25deg);
  z-index: -1;
}

.pixel-accent-4 {
  bottom: -25px;
  left: -25px;
  width: 56px;
  height: 56px;
  transform: rotate(-20deg);
  z-index: -1;
}

/* Pixel art accent elements */
.pixel-accent {
  position: absolute;
  width: 64px;
  height: 64px;
  background-color: var(--color-sage-light);
  border: var(--border-width-md) solid var(--color-sage-dark);
  opacity: 0.3;
  pointer-events: none;
}

.pixel-accent-1 {
  top: -10px;
  left: -20px;
  transform: rotate(15deg);
  z-index: -1;
}

.pixel-accent-2 {
  bottom: -10px;
  right: -20px;
  width: 48px;
  height: 48px;
  transform: rotate(-15deg);
  z-index: -1;
}

/* ===== ABOUT SECTION ===== */

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.about-bio {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  font-family: var(--font-readable);
  font-size: 16px;
}

.about-bio strong {
  color: var(--color-accent-primary);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
}

/* ===== EXPERIENCE SECTIONS ===== */

.experience-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* ===== PROJECTS SECTION ===== */

.project-filters {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
}

/* ===== STATS SECTION ===== */

.stats-section {
  background-color: var(--color-sage-lightest);
  border-top: var(--border-width-md) solid var(--color-border);
  border-bottom: var(--border-width-md) solid var(--color-border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.chart-container {
  background-color: var(--color-surface);
  padding: var(--space-lg);
  margin-top: var(--space-xl);
}

.chart-title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-md);
  text-align: center;
}

#pixel-chart {
  width: 100%;
  height: 200px;
  image-rendering: pixelated;
}

/* ===== RESUME SECTION ===== */

.resume-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.resume-viewer {
  background-color: var(--color-surface);
  overflow: hidden;
  min-height: 600px;
}

.pdf-fallback {
  padding: var(--space-xl);
  text-align: center;
}

.resume-actions {
  display: flex;
  justify-content: center;
}

/* ===== SOCIALS SECTION ===== */

.socials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  max-width: 800px;
  margin: 0;
}

/* ===== FOOTER ===== */

.footer {
  background-color: var(--color-sage-light);
  color: var(--color-charcoal-darkest);
  text-align: center;
  padding: var(--space-xl) var(--section-padding-x);
  border-top: var(--border-width-md) solid var(--color-sage-dark);
}

.footer p {
  color: var(--color-charcoal-darkest);
  margin: 0;
  font-size: var(--text-sm);
}

/* ===== RESPONSIVE DESIGN ===== */

/* Tablet and below */
@media (max-width: 1024px) {
  .sidebar-nav {
    left: var(--space-md);
    min-width: 160px;
  }
  
  .main-content {
    margin-left: calc(160px + var(--space-md) * 2);
  }
  
  .timeline-label {
    font-size: var(--text-xs);
  }
  
  /* Keep hero side-by-side on tablet but make picture smaller */
  .profile-picture-container {
    width: 220px;
    height: 220px;
  }
  
  .hero-content {
    gap: var(--space-md);
  }
}

/* Mobile - only stack on very small screens */
@media (max-width: 640px) {
  .header-content {
    padding: 0 var(--space-md);
  }
  
  .site-title {
    font-size: var(--text-base);
  }
  
  /* Move sidebar to bottom as mobile nav */
  .sidebar-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: auto;
    transform: none;
    border-radius: 0;
    border-left: none;
    border-right: none;
    border-bottom: none;
    padding: var(--space-sm);
    min-width: auto;
  }
  
  .timeline-nav {
    flex-direction: row;
    overflow-x: auto;
    margin-bottom: 0;
    gap: var(--space-xs);
  }
  
  .timeline-btn {
    flex-direction: column;
    padding: var(--space-sm);
    min-width: 60px;
  }
  
  .timeline-label {
    font-size: 10px;
    text-align: center;
  }
  
  .theme-toggle {
    display: none;
  }
  
  .main-content {
    margin-left: 0;
    padding: var(--space-md);
    margin-bottom: 80px; /* Space for mobile nav */
  }
  
  .section {
    padding: var(--space-2xl) 0;
  }
  
  .hero {
    min-height: calc(100vh - var(--header-height) - 80px);
    padding: var(--space-2xl) var(--space-md);
  }
  
  .hero-content {
    flex-direction: column;
    gap: var(--space-2xl);
    text-align: center;
  }
  
  .hero-text {
    text-align: center;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .profile-picture-container {
    width: 200px;
    height: 200px;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }
  
  .socials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pixel-accent {
    width: 32px;
    height: 32px;
  }
  
  .pixel-accent-2 {
    width: 24px;
    height: 24px;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-actions .px-btn {
    width: 100%;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .socials-grid {
    grid-template-columns: 1fr;
  }
}

/* Large desktop */
@media (min-width: 1400px) {
  .main-content {
    margin-left: calc(var(--sidebar-width) + var(--space-2xl) * 2);
  }
  
  .sidebar-nav {
    left: var(--space-2xl);
  }
}