:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #a3a3a3;
    --text-muted: #737373;
    --accent: #f5f5f5;
    --accent-secondary: #e5e5e5;
    --border: #262626;
    --border-light: #404040;
    --shadow: rgba(0, 0, 0, 0.5);
    --shadow-light: rgba(0, 0, 0, 0.2);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

.navbar {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.25rem;
}

.logo-icon {
    width: 2rem;
    height: 2rem;
    color: var(--accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -0.25rem;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: width 0.3s ease;
}

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

.nav-link:hover::after {
    width: 100%;
}

.language-switcher {
    display: flex;
    gap: 0.5rem;
    background-color: var(--bg-tertiary);
    border-radius: 0.75rem;
    padding: 0.25rem;
}

.lang-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.lang-btn:hover {
    color: var(--text-primary);
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-btn svg {
    width: 1.5rem;
    height: 1.5rem;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-secondary);
        padding: 1rem;
        gap: 1rem;
        border-bottom: 1px solid var(--border);
    }
}

.main-content {
    padding-top: 5rem;
    min-height: 100vh;
}

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

.hero {
    text-align: center;
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-3);
    font-weight: 700;
    font-size: 50px;
}

.text-blue {
    color: #2563EB;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.filters {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    gap: 2rem;
}

.filter-tabs {
    display: flex;
    gap: 0.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 0.25rem;
}

.filter-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.filter-btn:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

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

.search-box {
    position: relative;
    min-width: 300px;
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 1.25rem;
    height: 1.25rem;
    color: var(--text-muted);
}

.search-input {
    width: 100%;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 0.75rem 1rem 0.75rem 3rem;
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(245, 245, 245, 0.1);
}

.search-input::placeholder {
    color: var(--text-muted);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.project-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 1rem;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    height: 280px;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px var(--shadow);
    border-color: var(--border-light);
}

.project-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    transition: all 0.3s ease;
}

.project-card:hover .project-image {
    filter: blur(2px);
    transform: scale(1.05);
}

.project-content {
    padding: 1.5rem;
    position: relative;
}

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

.project-category {
    color: var(--text-muted);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
    border-radius: 1rem;
}

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

.overlay-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.125rem;
}

.overlay-arrow {
    width: 1.25rem;
    height: 1.25rem;
    transition: transform 0.3s ease;
}

.project-card:hover .overlay-arrow {
    transform: translateX(0.25rem);
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: 2rem;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 1.5rem;
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: scale(0.9) translateY(20px);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 50%;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 1;
}

.modal-close:hover {
    background: #dc2626;
    border-color: #dc2626;
    transform: scale(1.1);
}

.modal-close svg {
    width: 1.25rem;
    height: 1.25rem;
    color: var(--text-primary);
}

.modal-body {
    padding: 2rem;
}

.modal-header {
    margin-bottom: 2rem;
}

.modal-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.modal-category {
    color: var(--text-muted);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.modal-section {
    margin-bottom: 2rem;
}

.modal-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.modal-description {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1rem;
}

.modal-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.gallery-item {
    border-radius: 0.75rem;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: transform 0.2s ease;
}

.gallery-item:hover {
    transform: scale(1.02);
}

.gallery-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.pdf-preview {
    width: 100%;
    height: 200px;
    border: none;
    border-radius: 0.75rem;
    background: var(--bg-tertiary);
}

.modal-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
}

.modal-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--accent);
    color: var(--bg-primary);
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.modal-link:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px var(--shadow-light);
}

.modal-link svg {
    width: 1rem;
    height: 1rem;
}

footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .filters {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .search-box {
        min-width: 100%;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .modal-content {
        margin: 1rem;
        max-height: calc(100vh - 2rem);
    }

    .modal-body {
        padding: 1.5rem;
    }

    .modal-title {
        font-size: 1.5rem;
    }

    .modal-gallery {
        grid-template-columns: 1fr;
    }

    .modal-links {
        flex-direction: column;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.no-projects {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.no-projects h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.no-projects p {
    font-size: 1rem;
}