/* ========================================
   CSS Custom Properties
   ======================================== */
:root {
  /* Colors - Dark Theme */
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --bg-card: #141414;
  
  --text-primary: #e5e5e5;
  --text-secondary: #a3a3a3;
  --text-muted: #737373;
  
  --accent: #d4a853;
  --accent-hover: #e5b963;
  --accent-muted: rgba(212, 168, 83, 0.15);
  
  --border: #262626;
  --border-light: #333333;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Layout */
  --container-max: 800px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

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

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

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 { font-size: 2.5rem; letter-spacing: -0.02em; }
h2 { font-size: 1.5rem; letter-spacing: -0.01em; }
h3 { font-size: 1.125rem; }
h4 { font-size: 1rem; }

p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

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

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

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

ul, ol {
  list-style: none;
}

/* ========================================
   Layout
   ======================================== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-3xl) 0;
  border-bottom: 1px solid var(--border);
}

.section:last-child {
  border-bottom: none;
}

.section-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.section-header svg {
  width: 24px;
  height: 24px;
  color: var(--accent);
  flex-shrink: 0;
}

.section-title {
  font-size: 1.25rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

/* ========================================
   Header / Hero
   ======================================== */
.header {
  padding: var(--space-3xl) 0;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.profile-image {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border-light);
  margin-bottom: var(--space-lg);
  filter: grayscale(100%);
  transition: filter var(--transition-base);
}

.profile-image:hover {
  filter: grayscale(0%);
}

.header-name {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
  letter-spacing: -0.02em;
}

.header-title {
  font-size: 1.125rem;
  color: var(--accent);
  font-weight: 400;
  margin-bottom: var(--space-lg);
}

.header-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
}

.header-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

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

.header-link svg {
  width: 16px;
  height: 16px;
}

/* ========================================
   About Section
   ======================================== */
.about-text {
  color: var(--text-secondary);
  line-height: 1.8;
}

.about-text.collapsed {
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.read-more-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-md);
  padding: var(--space-xs) 0;
  font-size: 0.875rem;
  color: var(--accent);
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: color var(--transition-fast);
}

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

.read-more-btn svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.read-more-btn.expanded svg {
  transform: rotate(180deg);
}

/* ========================================
   Skills Section
   ======================================== */
.skills-category {
  margin-bottom: var(--space-xl);
}

.skills-category:last-child {
  margin-bottom: 0;
}

.skills-category-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border);
}

.skill-item {
  display: flex;
  flex-direction: column;
  padding: var(--space-sm) 0;
}

.skill-name {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.skill-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ========================================
   Accordion Component
   ======================================== */
.accordion {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-md);
}

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

.accordion-header {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg);
  background-color: var(--bg-card);
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: background-color var(--transition-fast);
}

.accordion-header:hover {
  background-color: var(--bg-tertiary);
}

.accordion-header-content {
  flex: 1;
  min-width: 0;
}

.accordion-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.accordion-subtitle {
  font-size: 0.875rem;
  color: var(--accent);
}

.accordion-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

.accordion-icon {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: transform var(--transition-base);
  margin-top: 2px;
}

.accordion.open .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  display: none;
  padding: 0 var(--space-lg) var(--space-lg);
  background-color: var(--bg-card);
  border-top: 1px solid var(--border);
}

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

.accordion-description {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  font-size: 0.9375rem;
}

.accordion-note {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-style: italic;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
  border-left: 2px solid var(--accent);
}

.accordion-list {
  list-style: none;
}

.accordion-list li {
  position: relative;
  padding-left: var(--space-lg);
  padding-top: var(--space-sm);
  padding-bottom: var(--space-sm);
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.accordion-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background-color: var(--accent);
  border-radius: 50%;
}

/* ========================================
   Education Section
   ======================================== */
.education-item {
  padding: var(--space-lg);
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
}

.education-item:last-child {
  margin-bottom: 0;
}

.education-degree {
  font-weight: 600;
  color: var(--text-primary);
}

.education-field {
  color: var(--accent);
  font-size: 0.9375rem;
}

.education-institution {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: var(--space-xs);
}

.education-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

/* ========================================
   Projects Section
   ======================================== */
.project-category {
  margin-bottom: var(--space-xl);
}

.project-category:last-child {
  margin-bottom: 0;
}

.project-category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.project-category-header:hover {
  background-color: var(--bg-tertiary);
}

.project-category-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.project-category-title svg {
  width: 18px;
  height: 18px;
  color: var(--accent);
}

.project-category-count {
  font-size: 0.75rem;
  color: var(--text-muted);
  background-color: var(--bg-tertiary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
}

.project-category-icon {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform var(--transition-base);
}

.project-category.open .project-category-icon {
  transform: rotate(180deg);
}

.project-category-content {
  display: none;
  padding: var(--space-md);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  background-color: var(--bg-card);
}

.project-category.open .project-category-content {
  display: block;
}

.project-item {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border);
}

.project-item:last-child {
  border-bottom: none;
}

.project-year {
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
}

.project-name {
  font-weight: 500;
  color: var(--text-primary);
}

.project-role {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.project-award {
  font-size: 0.8125rem;
  color: var(--accent);
  font-style: italic;
  margin-top: var(--space-xs);
}

.project-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.project-link {
  font-size: 0.8125rem;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-xs);
}

.project-link svg {
  width: 12px;
  height: 12px;
}

/* Sub-accordion for nested content */
.sub-accordion {
  margin-top: var(--space-md);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.sub-accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--bg-secondary);
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: background-color var(--transition-fast);
}

.sub-accordion-header:hover {
  background-color: var(--bg-tertiary);
}

.sub-accordion-icon {
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  transition: transform var(--transition-base);
}

.sub-accordion.open .sub-accordion-icon {
  transform: rotate(180deg);
}

.sub-accordion-content {
  display: none;
  padding: var(--space-md);
  background-color: var(--bg-card);
  border-top: 1px solid var(--border);
}

.sub-accordion.open .sub-accordion-content {
  display: block;
}

/* Year group for commercial projects */
.year-group {
  margin-bottom: var(--space-md);
}

.year-group:last-child {
  margin-bottom: 0;
}

.year-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--border);
}

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

.year-items li {
  padding: var(--space-xs) 0;
}

/* Music project item */
.music-project {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border);
}

.music-project:last-child {
  border-bottom: none;
}

.music-project-name {
  font-weight: 600;
  color: var(--text-primary);
}

.music-project-period {
  font-size: 0.75rem;
  color: var(--accent);
}

.music-project-items {
  margin-top: var(--space-sm);
  padding-left: var(--space-md);
}

.music-project-items li {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: var(--space-xs) 0;
  position: relative;
  padding-left: var(--space-md);
}

.music-project-items li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--text-muted);
}

/* Wedding list */
.wedding-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--space-xs);
}

.wedding-item {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  padding: var(--space-xs) 0;
}

/* Show more button for long lists */
.show-more-container {
  margin-top: var(--space-md);
  text-align: center;
}

.show-more-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  font-size: 0.8125rem;
  color: var(--accent);
  background-color: var(--accent-muted);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: inherit;
  transition: all var(--transition-fast);
}

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

.show-more-btn svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

.show-more-btn.expanded svg {
  transform: rotate(180deg);
}

/* Hidden items */
.hidden-items {
  display: none;
}

.hidden-items.visible {
  display: block;
}

.wedding-list .hidden-items.visible {
  display: contents;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  padding: var(--space-2xl) 0;
  text-align: center;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.footer-text {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-text .accent {
  color: var(--accent);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 640px) {
  :root {
    --space-3xl: 2.5rem;
  }
  
  h1, .header-name {
    font-size: 2rem;
  }
  
  .container {
    padding: 0 var(--space-md);
  }
  
  .header-links {
    flex-direction: column;
    align-items: center;
  }
  
  .wedding-list {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .accordion-header {
    padding: var(--space-md);
  }
  
  .accordion-content {
    padding: 0 var(--space-md) var(--space-md);
  }
}