/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  min-height: 44px;
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text);
  background-color: transparent;
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  font-family: inherit;
}

.btn:hover {
  background-color: var(--color-accent);
  color: var(--color-bg);
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

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

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

.btn-secondary {
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn-secondary:hover {
  background-color: var(--color-border);
  color: var(--color-text);
}

@media (prefers-reduced-motion: reduce) {
  .btn:hover {
    transform: none;
  }
}

/* Cards */
.card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-accent);
}

@media (prefers-reduced-motion: reduce) {
  .card:hover {
    transform: none;
  }
}

.card-title {
  font-size: var(--font-size-h3);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.card-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
}

.card-footer {
  margin-top: auto;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

/* Chips/Tags */
.chip {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  background-color: var(--color-neutral-100);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin: var(--spacing-xs) var(--spacing-xs) var(--spacing-xs) 0;
  line-height: 1.4;
}

.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-md);
}

.chip-group-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
  display: block;
}

.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-lg);
}

@media (min-width: 768px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Links */
.link {
  color: var(--color-text);
  text-decoration: none;
  position: relative;
  display: inline-block;
  transition: color var(--transition-fast);
}

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

.link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  right: 50%;
  height: 1px;
  background-color: var(--color-accent);
  transition: left var(--transition-base), right var(--transition-base);
}

.link:hover::after,
.link:focus-visible::after {
  left: 0;
  right: 0;
}

.link-primary {
  color: var(--color-accent);
  font-weight: 500;
}

.link-primary::after {
  background-color: var(--color-accent);
  height: 2px;
}

/* Hero Section */
.hero {
  padding: var(--spacing-2xl) 0;
  text-align: center;
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .hero {
    padding: var(--spacing-3xl) 0;
    min-height: 80vh;
  }
}

.hero-code-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.code-snippet {
  position: absolute;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', monospace;
  font-size: 14px;
  line-height: 1.6;
  opacity: 0;
  white-space: pre;
  pointer-events: none;
  transition: opacity 2s ease-in-out;
}

.code-snippet.typing {
  opacity: 0.15;
}

.code-snippet.visible {
  opacity: 0.2;
}

.code-snippet.fading {
  opacity: 0;
}

/* Syntax colors */
.code-snippet .keyword { color: #569cd6; }
.code-snippet .string { color: #ce9178; }
.code-snippet .function { color: #dcdcaa; }
.code-snippet .comment { color: #6a9955; }
.code-snippet .number { color: #b5cea8; }
.code-snippet .operator { color: #d4d4d4; }
.code-snippet .variable { color: #9cdcfe; }
.code-snippet .type { color: #4ec9b0; }

@media (prefers-color-scheme: dark) {
  .code-snippet .keyword { color: #569cd6; }
  .code-snippet .string { color: #ce9178; }
  .code-snippet .function { color: #dcdcaa; }
  .code-snippet .comment { color: #6a9955; }
  .code-snippet .number { color: #b5cea8; }
  .code-snippet .operator { color: #d4d4d4; }
  .code-snippet .variable { color: #9cdcfe; }
  .code-snippet .type { color: #4ec9b0; }
  .code-snippet.typing { opacity: 0.2; }
  .code-snippet.visible { opacity: 0.25; }
}

.hero-title {
  font-size: var(--font-size-h1);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
  line-height: 1.1;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-scroll {
  margin-top: var(--spacing-2xl);
  display: flex;
  justify-content: center;
}

.scroll-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
  transition: all var(--transition-base);
  color: var(--color-accent);
}

.scroll-arrow:hover {
  color: var(--color-accent-hover);
  transform: translateY(4px);
}

.scroll-arrow-icon {
  width: 48px;
  height: 48px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@media (prefers-reduced-motion: reduce) {
  .scroll-arrow:hover {
    transform: none;
  }
  
  .code-snippet {
    opacity: 0 !important;
  }
}

/* Contact Section */
.contact-section {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, var(--color-neutral-100) 0%, var(--color-bg) 100%);
  border-radius: var(--radius-lg);
  margin: var(--spacing-2xl) 0;
}

.contact-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.contact-title {
  font-size: var(--font-size-h2);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.contact-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-loose);
  margin-bottom: var(--spacing-xl);
}

/* Highlights Section */
.highlights {
  margin: var(--spacing-2xl) 0;
  padding: var(--spacing-2xl) 0;
}

.section-title {
  font-size: var(--font-size-h2);
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  color: var(--color-text);
}

.highlights .grid-3 {
  gap: var(--spacing-xl);
  grid-template-columns: repeat(3, 1fr);
}

.highlights .card {
  max-width: none;
  padding: var(--spacing-xl) var(--spacing-lg);
}

.highlights .card-title {
  font-size: clamp(24px, 3vw, 32px);
  margin-bottom: var(--spacing-md);
  font-weight: 600;
}

.highlights .card-description {
  font-size: clamp(16px, 1.5vw, 20px);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.highlights .card-footer {
  padding-top: var(--spacing-lg);
  margin-top: auto;
}

.highlights .card-footer .link {
  font-size: clamp(16px, 1.5vw, 18px);
}

@media (max-width: 1023px) {
  .highlights .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .highlights .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* Callout Panels */
.callout {
  background-color: var(--color-neutral-100);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.callout-title {
  font-size: var(--font-size-h4);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.callout-list {
  list-style: none;
  padding-left: 0;
}

.callout-list li {
  padding: var(--spacing-xs) 0;
  color: var(--color-text-secondary);
  position: relative;
  padding-left: var(--spacing-lg);
}

.callout-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: bold;
}

/* Scroll Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* Project Cards */
.project-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-accent);
}

@media (prefers-reduced-motion: reduce) {
  .project-card:hover {
    transform: none;
  }
}

.project-card-title {
  font-size: var(--font-size-h3);
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.project-card-value {
  font-size: var(--font-size-base);
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

.project-card-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
}

.project-card-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.project-card-link {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* Case Study Sections */
.case-study {
  margin: var(--spacing-2xl) 0;
}

.case-study-section {
  margin-bottom: var(--spacing-xl);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.case-study-section.scroll-in {
  opacity: 1;
  transform: translateY(0);
}

.case-study-section-title {
  font-size: var(--font-size-h3);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.case-study-content {
  color: var(--color-text-secondary);
  line-height: var(--line-height-loose);
}

.case-study-metrics {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

@media (min-width: 768px) {
  .case-study-metrics {
    grid-template-columns: repeat(2, 1fr);
  }
}

.metric {
  padding: var(--spacing-md);
  background-color: var(--color-neutral-100);
  border-radius: var(--radius-md);
}

.metric-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.metric-value {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text);
}

/* Resume Styles */
.resume-section {
  margin-bottom: var(--spacing-xl);
}

.resume-section-title {
  font-size: var(--font-size-h2);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: var(--spacing-xs);
}

.resume-item {
  margin-bottom: var(--spacing-lg);
}

.resume-item-header {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--spacing-xs);
}

@media (min-width: 768px) {
  .resume-item-header {
    flex-direction: row;
    justify-content: space-between;
    align-items: baseline;
  }
}

.resume-item-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
}

.resume-item-company {
  font-size: var(--font-size-base);
  color: var(--color-accent);
  font-weight: 500;
}

.resume-item-date {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--spacing-xs);
}

@media (min-width: 768px) {
  .resume-item-date {
    margin-top: 0;
  }
}

.resume-item-description {
  color: var(--color-text-secondary);
  margin-top: var(--spacing-sm);
}

.resume-item-list {
  list-style: none;
  padding-left: 0;
  margin-top: var(--spacing-sm);
}

.resume-item-list li {
  padding: var(--spacing-xs) 0;
  color: var(--color-text-secondary);
  position: relative;
  padding-left: var(--spacing-lg);
}

.resume-item-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* PDF Viewer */
.pdf-viewer-container {
  margin-top: var(--spacing-xl);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-neutral-100);
}

.pdf-viewer {
  width: 100%;
  height: 800px;
  border: none;
}

@media (max-width: 768px) {
  .pdf-viewer {
    height: 600px;
  }
}

/* Print Styles */
@media print {
  .header,
  .footer,
  .btn,
  .pdf-viewer-container {
    display: none;
  }
  
  .main {
    margin-top: 0;
  }
  
  .resume-section {
    page-break-inside: avoid;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.5;
  }
  
  h1, h2, h3 {
    page-break-after: avoid;
  }
}