:root {
    --color-bg: #f5f1e9;
    --color-text: #222;
    --color-accent: #b84a62;
    --color-accent-light: #6aa9a9;
    --color-border: #ddd;
    --color-shadow: rgba(34, 34, 34, 0.1);
    
    --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --line-height: 1.6;
    --max-width: 960px;
    --border-radius: 4px;
    --transition: 200ms ease;
    
    --space-1: 0.5rem;
    --space-2: 1rem;
    --space-3: 1.5rem;
    --space-4: 2rem;
}

* {
    box-sizing: border-box;
}

/* Base image styles for responsive behavior */
img {
    max-width: 100%;
    height: auto;
}

body {
    font-family: var(--font-family);
    line-height: var(--line-height);
    color: var(--color-text);
    background-color: var(--color-bg);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, transparent 20%, rgba(34, 34, 34, 0.01) 21%, rgba(34, 34, 34, 0.01) 34%, transparent 35%, transparent),
        linear-gradient(0deg, rgba(34, 34, 34, 0.005) 50%, transparent 50%);
    background-size: 15px 15px, 3px 3px;
    mix-blend-mode: multiply;
    pointer-events: none;
    z-index: 1;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.site-header {
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: box-shadow var(--transition);
}

.site-header.scrolled {
    box-shadow: 0 2px 8px var(--color-shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.logo {
    font-weight: 600;
    font-size: 1.2rem;
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition);
}

.logo:hover,
.logo:focus-visible {
    color: var(--color-accent);
}

.main-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 2rem;
}

.main-nav a {
    color: var(--color-text);
    text-decoration: none;
    position: relative;
    transition: color var(--transition);
    outline: none;
}

.main-nav a:hover,
.main-nav a:focus-visible {
    color: var(--color-accent);
}

.main-nav a.active {
    color: var(--color-accent);
}

.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 1px;
    background-color: var(--color-accent);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
        font-size: 0.9rem;
    }
}

/* Main Content */
main {
    flex: 1;
    position: relative;
    z-index: 2;
    padding: 2rem 0;
}

.hero {
    text-align: center;
    padding: 4rem 1.5rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin: 0 0 1rem 0;
    font-weight: 700;
    color: var(--color-text);
}

.hero p {
    font-size: 1.1rem;
    color: var(--color-text);
    opacity: 0.8;
    max-width: 600px;
    margin: 0 auto 2rem auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.content h1 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    margin: 0 0 2rem 0;
    color: var(--color-text);
}

.content h2 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem 0;
    color: var(--color-text);
}

.content p {
    margin: 0 0 1.5rem 0;
}

.content ul {
    margin: 0 0 1.5rem 0;
    padding-left: 1.5rem;
}

.content li {
    margin-bottom: 0.5rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--color-accent);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition);
    cursor: pointer;
    font-size: 1rem;
    background: transparent;
    position: relative;
    overflow: hidden;
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
    transform: translateY(-1px);
    box-shadow: 
        2px 2px 0 var(--color-accent),
        -1px -1px 0 var(--color-accent-light);
}

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

.btn-secondary:hover,
.btn-secondary:focus-visible {
    background-color: var(--color-accent);
    color: white;
    transform: translateY(-1px);
    box-shadow: 
        2px 2px 0 var(--color-accent-light),
        -1px -1px 0 var(--color-accent);
}

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

/* Forms */
.contact-form {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    background-color: white;
    transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px rgba(184, 74, 98, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.error-message {
    color: var(--color-accent);
    font-size: 0.9rem;
    margin-top: 0.25rem;
    display: none;
}

.error-message.show {
    display: block;
}

.form-status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: var(--border-radius);
    display: none;
}

.form-status.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.form-status.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

/* Footer */
.site-footer {
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: 2rem 0;
    margin-top: auto;
    position: relative;
    z-index: 2;
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    text-align: center;
}

.footer-links {
    margin-bottom: 1rem;
}

.footer-links a {
    color: var(--color-text);
    text-decoration: none;
    margin: 0 0.5rem;
    transition: color var(--transition);
}

.footer-links a:hover,
.footer-links a:focus-visible {
    color: var(--color-accent);
}

.footer-copyright {
    font-size: 0.9rem;
    color: var(--color-text);
    opacity: 0.7;
}

/* Focus visible styles for accessibility */
*:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Skip to main content link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--color-accent);
    color: white;
    padding: 8px;
    z-index: 1000;
    text-decoration: none;
    border-radius: var(--border-radius);
}

.skip-link:focus {
    top: 6px;
}

/* Responsive Design */
@media (max-width: 480px) {
    .hero {
        padding: 2rem 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .content {
        padding: 0 1rem;
    }
    
    .main-nav ul {
        gap: 0.5rem;
        font-size: 0.85rem;
    }
}

@media (min-width: 769px) {
    .main-nav ul {
        gap: 2.5rem;
    }
}

/* Projects Section */
.projects {
    padding: 4rem 0;
    background: linear-gradient(180deg, var(--color-bg) 0%, rgba(245, 241, 233, 0.5) 100%);
}

.projects h2 {
    text-align: center;
    margin: 0 0 3rem 0;
    font-size: 2.5rem;
    color: var(--color-text);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-4);
    margin: 0;
    padding: 0;
    list-style: none;
}

.project-card {
    margin: 0;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 2px 8px var(--color-shadow);
}

.project-card:hover {
    transform: translateY(-2px);
    box-shadow: 
        2px 4px 12px var(--color-shadow),
        -1px 2px 8px rgba(184, 74, 98, 0.1);
    border-color: var(--color-accent-light);
}

.project-link {
    text-decoration: none;
    color: inherit;
    display: block;
    height: 100%;
}

.project-figure {
    margin: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.project-figure img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
    transition: var(--transition);
    max-width: 100%;
}

.project-card:hover .project-figure img {
    filter: contrast(1.1) brightness(1.05);
}

.project-info {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    margin: 0 0 0.5rem 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
}

.project-year {
    font-size: 0.875rem;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: 0.75rem;
    display: block;
}

.project-description {
    margin: 0;
    font-size: 0.95rem;
    color: #666;
    line-height: 1.5;
    flex: 1;
}

/* Gallery Styles */
.breadcrumb {
    margin: 2rem 0 1rem 0;
}

.breadcrumb a {
    color: var(--color-accent);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--color-text);
}

.gallery-description {
    font-size: 1.1rem;
    color: #666;
    margin: 1rem 0 3rem 0;
    text-align: center;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-3);
    margin: 0;
    padding: 0;
    list-style: none;
}

.gallery-item {
    display: block;
    text-decoration: none;
    color: inherit;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    background: white;
    transition: var(--transition);
    box-shadow: 0 2px 4px var(--color-shadow);
}

.gallery-item:hover,
.gallery-item:focus-visible {
    transform: translateY(-1px);
    box-shadow: 
        1px 3px 8px var(--color-shadow),
        -1px 1px 4px rgba(106, 169, 169, 0.1);
    border-color: var(--color-accent-light);
    outline: none;
}

.gallery-item img {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 3/2;
    object-fit: cover;
    transition: var(--transition);
    max-width: 100%;
}

.gallery-item:hover img {
    filter: contrast(1.05) brightness(1.02);
}

/* Lightbox */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 300ms ease, visibility 300ms ease;
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(4px);
}

.lightbox-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    overflow: hidden;
}

.lightbox-image-container {
    max-width: 95vw;
    max-height: 85vh;
    position: relative;
    width: 100%;
    height: auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-image {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: var(--border-radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    display: block;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    color: var(--color-text);
    backdrop-filter: blur(8px);
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover,
.lightbox-close:focus-visible,
.lightbox-prev:focus-visible,
.lightbox-next:focus-visible {
    background: white;
    transform: scale(1.05);
    outline: 2px solid var(--color-accent-light);
    outline-offset: 2px;
}

.lightbox-close {
    top: 2rem;
    right: 2rem;
    font-size: 2rem;
}

.lightbox-prev {
    left: 2rem;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next {
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-info {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    backdrop-filter: blur(8px);
}

/* Not Found */
.not-found {
    text-align: center;
    padding: 4rem 2rem;
}

.not-found h1 {
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.not-found p {
    margin-bottom: 2rem;
    color: #666;
}

.btn-back {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--color-accent);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.btn-back:hover {
    background: var(--color-accent-light);
    transform: translateY(-1px);
}

/* Responsive adjustments */
@media (max-width: 480px) {
    .lightbox-image-container {
        max-width: 100vw;
        max-height: 90vh;
    }
    
    .lightbox-content {
        padding: 0.5rem;
    }
    
    .project-figure img {
        height: 200px;
    }
    
    .gallery-item img {
        aspect-ratio: 4/3;
    }
}

@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }
    
    .grid {
        grid-template-columns: 1fr;
        gap: var(--space-2);
    }
    
    .projects h2 {
        font-size: 2rem;
        margin-bottom: 2rem;
    }
    
    .lightbox-content {
        padding: 1rem;
    }
    
    .lightbox-image-container {
        max-width: 98vw;
        max-height: 88vh;
    }
    
    .lightbox-close {
        top: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
    }
    
    .lightbox-prev,
    .lightbox-next {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }
    
    .lightbox-prev {
        left: 1rem;
    }
    
    .lightbox-next {
        right: 1rem;
    }
    
    .project-figure img {
        height: 220px;
    }
}

@media (min-width: 640px) {
    .grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 769px) and (max-width: 1023px) {
    .grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .project-figure img {
        height: 240px;
    }
    
    /* Tablet lightbox optimization */
    .lightbox-image-container {
        max-width: 85vw;
        max-height: 80vh;
    }
    
    .lightbox-image {
        max-width: 800px;
        max-height: 80vh;
    }
}

@media (min-width: 1024px) {
    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Desktop lightbox improvements */
    .lightbox-image-container {
        max-width: 80vw;
        max-height: 80vh;
    }
    
    .lightbox-image {
        max-width: 1200px;
        max-height: 80vh;
    }
}

@media (min-width: 1400px) {
    .grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
        max-width: 1200px;
        margin: 0 auto;
    }
    
    /* Large desktop lightbox optimization */
    .lightbox-image-container {
        max-width: 70vw;
        max-height: 75vh;
    }
    
    .lightbox-image {
        max-width: 1000px;
        max-height: 75vh;
    }
}