/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a1a1a;
    --secondary-color: #f5f5f5;
    --accent-color: #2c3e50;
    --text-color: #333;
    --light-text: #666;
    --border-color: #ddd;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 1rem 0;
}

nav {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: 400;
    letter-spacing: 2px;
}

.nav-brand a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.nav-brand a:hover {
    opacity: 0.7;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 400;
    transition: var(--transition);
    padding: 0.5rem 0;
}

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

.nav-link.active {
    font-weight: 600;
    color: var(--primary-color);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--primary-color);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
    margin-top: 0;
}

.hero-content {
    text-align: center;
}

.hero h2 {
    font-size: 4rem;
    font-weight: 300;
    letter-spacing: 8px;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    letter-spacing: 4px;
    color: var(--light-text);
}

/* Projects Grid Section */
.projects-grid-section {
    padding: 6rem 0;
    min-height: 100vh;
    background-color: var(--secondary-color);
}

.projects-grid-section h2 {
    font-size: 2.5rem;
    font-weight: 300;
    letter-spacing: 3px;
    margin-bottom: 4rem;
    text-align: center;
    color: var(--primary-color);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.project-card {
    background: #fff;
    padding: 3rem 2rem;
    text-decoration: none;
    color: var(--text-color);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 250px;
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(44, 62, 80, 0.05) 0%, transparent 100%);
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    border-color: var(--accent-color);
}

.project-card:hover::before {
    opacity: 1;
}

.project-card-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.project-card h3 {
    font-size: 1.5rem;
    font-weight: 300;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.project-card:hover h3 {
    color: var(--accent-color);
}

.project-card .year {
    font-size: 1rem;
    color: var(--light-text);
    font-weight: 300;
}

/* Project Sections */
.project-section,
.bio-section,
.contact-section,
.news-section {
    padding: 6rem 0;
    min-height: 100vh;
}

.project-section:nth-child(even) {
    background-color: var(--secondary-color);
}

.project-section h2,
.contact-section h2,
.news-section h2 {
    font-size: 2.5rem;
    font-weight: 300;
    letter-spacing: 3px;
    margin-bottom: 1rem;
    text-align: center;
    color: var(--primary-color);
}

.bio-section h2 {
    font-size: 1.2rem;
    font-weight: 400;
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
    margin-top: 2rem;
    color: var(--primary-color);
}

.bio-content strong {
    font-size: 0.9rem;
    font-weight: 600;
}

.project-year {
    text-align: center;
    font-size: 1.0rem;
    color: var(--light-text);
    margin-bottom: 3rem;
}

.project-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-top: 3rem;
}

.project-gallery {
    width: 100%;
}

.gallery-placeholder {
    background: #f9f9f9;
    border: 2px dashed var(--border-color);
    padding: 4rem 2rem;
    text-align: center;
    color: var(--light-text);
    border-radius: 8px;
}

.gallery-placeholder .note {
    margin-top: 2rem;
    font-size: 0.9rem;
    font-style: italic;
}

.project-description {
    font-size: 1.1rem;
    line-height: 1.8;
}

.project-description p {
    margin-bottom: 1.5rem;
    text-align: justify;
}

/* Bio Section */
.bio-content {
    max-width: 900px;
    margin: 3rem auto;
    font-size: 0.9rem;
    line-height: 1.6;
}

.bio-content p {
    font-size: 0.9rem;
}

.bio-content ul {
    font-size: 0.9rem;
}

.bio-text,
.cv-text {
    margin-bottom: 3rem;
}

.cv-text h3 {
    font-size: 1.8rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    letter-spacing: 2px;
}

/* Contact Section */
.contact-content {
    max-width: 600px;
    margin: 3rem auto;
    text-align: center;
}

.contact-info {
    margin-top: 2rem;
    font-size: 1.1rem;
}

.contact-info a {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition);
}

.contact-info a:hover {
    text-decoration: underline;
}

/* News Section */
.news-content {
    max-width: 900px;
    margin: 3rem auto;
}

/* Footer */
footer {
    background: var(--primary-color);
    color: #fff;
    padding: 2rem 0;
    text-align: center;
}

footer p {
    font-size: 0.9rem;
    letter-spacing: 1px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .nav-menu {
        gap: 1.5rem;
    }
    
    .nav-link {
        font-size: 0.85rem;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.98);
        width: 100%;
        padding: 2rem;
        gap: 1rem;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        transition: left 0.3s ease;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero h2 {
        font-size: 2.5rem;
        letter-spacing: 4px;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
        letter-spacing: 2px;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .project-card {
        min-height: 200px;
    }
    
    .project-section h2,
    .contact-section h2,
    .news-section h2,
    .projects-grid-section h2 {
        font-size: 2rem;
        letter-spacing: 2px;
    }
    
    .bio-section h2 {
        font-size: 1.1rem;
        letter-spacing: 2px;
    }
    
    .container {
        padding: 0 1.5rem;
    }
    
    .project-section,
    .bio-section,
    .contact-section,
    .news-section,
    .projects-grid-section {
        padding: 4rem 0;
    }
}

@media (max-width: 480px) {
    .hero h2 {
        font-size: 2rem;
        letter-spacing: 2px;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .nav-brand h1 {
        font-size: 1.2rem;
    }
    
    .projects-grid {
        gap: 1rem;
    }
    
    .project-card {
        padding: 2rem 1.5rem;
        min-height: 180px;
    }
    
    .project-card h3 {
        font-size: 1.2rem;
    }
    
    .project-section h2,
    .contact-section h2,
    .news-section h2,
    .projects-grid-section h2 {
        font-size: 1.5rem;
    }
    
    .bio-section h2 {
        font-size: 1rem;
    }
}

/* Gallery Grid (for when images are added) */
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.image-grid img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.image-grid img:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

/* Smooth scrolling offset for fixed header */
section {
    scroll-margin-top: 80px;
}