/* Base Styles */
:root {
    --color-bg: #ffffff;
    --color-text: #333333;
    --color-primary: #464646;
    --color-secondary: #e6e6e6;
    --color-accent: #b7b7b7;
    --font-heading: 'Cormorant Garamond', serif;
    --font-body: 'Montserrat', sans-serif;
    --spacing-sm: 10px;
    --spacing-md: 20px;
    --spacing-lg: 40px;
    --spacing-xl: 80px;
    --border-radius: 4px;
    --container-width: 1200px;
    --transition: all 0.3s ease;
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
  }
  
  .container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 15px;
  }
  
  a {
    text-decoration: none;
    color: var(--color-primary);
    transition: var(--transition);
  }
  
  a:hover {
    color: var(--color-accent);
  }
  
  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    margin-bottom: 1rem;
    font-weight: 400;
    line-height: 1.2;
  }
  
  button {
    cursor: pointer;
    font-family: var(--font-body);
  }
  
  img {
    max-width: 100%;
    height: auto;
  }
  
  /* Header Styles */
  .site-header {
    background-color: var(--color-bg);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  }
  
  .site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .logo a {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--color-primary);
  }
  
  .main-nav .nav-menu {
    display: flex;
    list-style: none;
  }
  
  .main-nav li {
    margin-left: 30px;
  }
  
  .main-nav a {
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    padding-bottom: 5px;
    position: relative;
  }
  
  .main-nav a:after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: 0;
    left: 0;
    background-color: var(--color-primary);
    transition: width 0.3s ease;
  }
  
  .main-nav a:hover:after,
  .main-nav a.active:after {
    width: 100%;
  }
  
  .menu-toggle {
    display: none;
    background: none;
    border: none;
    width: 28px;
    height: 20px;
    position: relative;
    z-index: 200;
  }
  
  .menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    margin-bottom: 5px;
    transition: var(--transition);
  }
  
  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
  
  /* Artist Hero Section */
  .artist-hero {
    position: relative;
    height: 90vh;
    overflow: hidden;
  }
  
  .portrait-container {
    position: relative;
    width: 100%;
    height: 100%;
  }
  
  .artist-portrait {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  
  .portrait-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: rgba(0,0,0,0.4);
    color: white;
    text-align: center;
    padding: var(--spacing-lg);
  }
  
  .portrait-overlay h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    letter-spacing: 4px;
    font-weight: 300;
  }
  
  .portrait-overlay .tagline {
    font-size: 1.2rem;
    font-style: italic;
    letter-spacing: 2px;
  }
  
  /* Gallery Filter Section */
  .gallery-filter {
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--color-secondary);
  }
  
  .filter-group {
    margin-bottom: var(--spacing-lg);
  }
  
  .filter-group h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    text-align: center;
  }
  
  .filter-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
  }
  
  .filter-btn {
    background: none;
    border: 1px solid var(--color-secondary);
    padding: 8px 16px;
    font-size: 0.9rem;
    transition: var(--transition);
  }
  
  .filter-btn:hover,
  .filter-btn.active {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
  }
  
  /* Paintings Gallery */
  .paintings-gallery {
    padding: var(--spacing-lg) 0 var(--spacing-xl);
  }
  
  .paintings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
  }
  
  .painting-card {
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: var(--transition);
    background-color: white;
  }
  
  .painting-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
  }
  
  .painting-image {
    height: 300px;
    overflow: hidden;
  }
  
  .painting-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
  }
  
  .painting-card:hover .painting-image img {
    transform: scale(1.05);
  }
  
  .painting-info {
    padding: 20px;
  }
  
  .painting-info h3 {
    font-size: 1.3rem;
    margin-bottom: 8px;
  }
  
  .painting-info .category,
  .painting-info .media {
    font-size: 0.8rem;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 1px;
  }
  
  .painting-info .dimensions {
    margin-top: 5px;
    font-size: 0.9rem;
  }
  
  /* Painting Detail */
  .painting-detail {
    padding: var(--spacing-lg) 0 var(--spacing-xl);
  }
  
  .painting-detail-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  @media (min-width: 768px) {
    .painting-detail-container {
      grid-template-columns: 3fr 2fr;
    }
  }
  
  .painting-image-large {
    overflow: hidden;
  }
  
  .painting-image-large img {
    width: 100%;
    height: auto;
    max-height: 600px;
    object-fit: contain;
  }
  
  .painting-info-content h2 {
    font-size: 2rem;
    margin-bottom: 10px;
  }
  
  .painting-meta {
    margin-bottom: 20px;
  }
  
  .painting-meta .id {
    display: inline-block;
    background-color: var(--color-secondary);
    padding: 4px 10px;
    font-size: 0.8rem;
    margin-right: 10px;
  }
  
  .painting-meta .media,
  .painting-meta .category {
    display: block;
    font-size: 0.9rem;
    color: var(--color-accent);
    margin-top: 5px;
  }
  
  .painting-meta .dimensions {
    display: block;
    font-size: 0.9rem;
    margin-top: 5px;
  }
  
  .painting-year {
    margin-bottom: 20px;
    font-style: italic;
    color: var(--color-accent);
  }
  
  .painting-description {
    margin-bottom: 30px;
    line-height: 1.8;
  }
  
  .back-to-gallery {
    display: inline-block;
    margin-top: 20px;
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
  }
  
  /* Pagination */
  .pagination {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-lg);
  }
  
  .pagination-btn {
    display: inline-block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    margin: 0 5px;
    background-color: white;
    border: 1px solid var(--color-secondary);
    transition: var(--transition);
  }
  
  .pagination-btn.active,
  .pagination-btn:hover {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
  }
  
  .pagination-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
  }
  
  /* About Page */
  .about-hero {
    background-color: var(--color-secondary);
    padding: var(--spacing-xl) 0;
    text-align: center;
  }
  
  .about-hero h1 {
    font-size: 2.5rem;
    margin: 0;
  }
  
  .about-content {
    padding: var(--spacing-xl) 0;
  }
  
  .about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  @media (min-width: 768px) {
    .about-grid {
      grid-template-columns: 1fr 2fr;
    }
  }
  
  .about-image img {
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  }
  
  .about-text h2 {
    font-size: 1.8rem;
    margin: 1.5rem 0 1rem;
  }
  
  .about-text h2:first-child {
    margin-top: 0;
  }
  
  .about-text p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
  }
  
  /* Loading */
  .loading {
    text-align: center;
    padding: 40px;
    color: var(--color-accent);
  }
  
  /* Footer */
  .site-footer {
    background-color: var(--color-secondary);
    padding: 30px 0;
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-accent);
  }
  
  /* Responsive */
  @media (max-width: 768px) {
    .menu-toggle {
      display: block;
    }
    
    .main-nav .nav-menu {
      position: fixed;
      top: 0;
      right: -100%;
      width: 250px;
      height: 100vh;
      background-color: white;
      flex-direction: column;
      align-items: flex-start;
      padding: 80px 20px 20px;
      box-shadow: -2px 0 10px rgba(0,0,0,0.1);
      transition: right 0.3s ease;
      z-index: 100;
    }
    
    .main-nav .nav-menu.active {
      right: 0;
    }
    
    .main-nav li {
      margin: 10px 0;
      width: 100%;
    }
    
    .main-nav a {
      display: block;
      padding: 10px 0;
    }
    
    .artist-hero {
      height: 70vh;
    }
    
    .portrait-overlay h1 {
      font-size: 2.2rem;
    }
    
    .portrait-overlay .tagline {
      font-size: 1rem;
    }
    
    .paintings-grid {
      grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
  }
  
  @media (max-width: 480px) {
    .artist-hero {
      height: 60vh;
    }
    
    .portrait-overlay h1 {
      font-size: 1.8rem;
    }
    
    .portrait-overlay .tagline {
      font-size: 0.9rem;
    }
    
    .paintings-grid {
      grid-template-columns: 1fr;
    }
    
    .filter-buttons {
      flex-direction: column;
      align-items: center;
    }
    
    .filter-btn {
      width: 100%;
      max-width: 200px;
    }
  }