/* Reset and Base Styles */
* {
    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: #333;
    background-color: #f8f9fa;
}

/* Header Styles */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.site-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #4A90E2;
    margin-bottom: 0.5rem;
}

.tagline {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* Project Grid */
.projects-section h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
    color: #333;
}

.search-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.search-input {
    padding: 12px 16px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    width: 300px;
    max-width: 100%;
    transition: border-color 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: #4A90E2;
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.search-btn {
    min-width: 100px;
}

.clear-btn {
    min-width: 80px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.project-card {
    background: #fff;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.project-card h3 {
    color: #333;
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.project-card p {
    color: #666;
    margin-bottom: 2rem;
    flex-grow: 1;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: #4A90E2;
    color: white;
}

.btn-primary:hover {
    background-color: #357ABD;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: #4A90E2;
    border: 2px solid #4A90E2;
}

.btn-secondary:hover {
    background-color: #4A90E2;
    color: white;
}

.btn-back {
    background-color: #6c757d;
    color: white;
    margin-bottom: 2rem;
}

.btn-back:hover {
    background-color: #5a6268;
}

/* Project Detail Page */
.project-hero {
    text-align: center;
    margin-bottom: 3rem;
}

.project-title {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 2rem;
}

.project-image {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

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

.project-description {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.project-description h3 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.project-description p {
    color: #666;
    margin-bottom: 1.5rem;
}

.features-list {
    list-style: none;
    padding: 0;
}

.features-list li {
    padding: 0.5rem 0;
    color: #666;
    position: relative;
    padding-left: 1.5rem;
}

.features-list li:before {
    content: "✓";
    color: #4A90E2;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.project-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

/* Footer */
footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
}

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

.social-links {
    margin-top: 1rem;
}

.social-links a {
    color: #4A90E2;
    text-decoration: none;
    margin: 0 1rem;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: #357ABD;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-container {
        padding: 0 1rem;
    }
    
    .site-title {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    main {
        padding: 2rem 1rem;
    }
    
    .search-container {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .search-input {
        width: 100%;
        max-width: 400px;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .project-card {
        padding: 1.5rem;
    }
    
    .project-title {
        font-size: 2rem;
    }
    
    .project-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .site-title {
        font-size: 1.8rem;
    }
    
    .project-card {
        padding: 1rem;
    }
    
    .btn {
        padding: 14px 20px;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mb-2 {
    margin-bottom: 2rem;
}

.mt-2 {
    margin-top: 2rem;
}