:root {
    --color-primary: #5e3bee;
    --color-primary-dark: #4a2fb8;
    --color-secondary: #f4f6ff;
    --color-text: #1c1e53;
    --color-text-light: #6b7280;
    --color-white: #ffffff;
    --color-bg: #fafbfc;
    --border-radius: 0.5rem;
    --transition: all 0.3s ease;
    --max-width: 1200px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

.header {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
    padding: 4rem 0 3rem;
    text-align: center;
}

.header__title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.header__subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    opacity: 0.9;
}

.main {
    flex: 1;
    padding: 4rem 0;
}

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

.project-card {
    background: var(--color-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.project-card__image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    background: var(--color-secondary);
}

.project-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.project-card:hover .project-card__image img {
    transform: scale(1.05);
}

.project-card__content {
    padding: 2rem;
}

.project-card__title {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.project-card__description {
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--color-secondary);
    color: var(--color-primary);
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.project-card__links {
    display: flex;
    gap: 1rem;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    text-align: center;
    flex: 1;
}

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

.btn--primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

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

.btn--secondary:hover {
    background: #e8ebff;
    transform: translateY(-2px);
}

.footer {
    background: var(--color-text);
    color: var(--color-white);
    padding: 2rem 0;
    text-align: center;
    margin-top: auto;
}

.footer a {
    color: var(--color-white);
    text-decoration: underline;
}

.footer a:hover {
    opacity: 0.8;
}

@media (max-width: 768px) {
    .header {
        padding: 3rem 0 2rem;
    }
    
    .main {
        padding: 2rem 0;
    }
    
    .projects {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .project-card__links {
        flex-direction: column;
    }
}