:root {
    --primary-color: #dc143c;
    --secondary-color: #8b0000;
    --accent-color: #ff4500;
    --dark-color: #000000;
    --light-color: #1a1a1a;
    --text-color: #fff;
    --text-light: #bbb;
    --white: #000;
    --black: #fff;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --transition: all 0.3s ease;
    --border-radius: 8px;
    --box-shadow: 0 5px 15px rgba(255, 0, 0, 0.3);
    --max-width: 1200px;
}

.dark-mode {
    --dark-color: #f8f9fa;
    --light-color: #121212;
    --text-color: #f8f9fa;
    --text-light: #aaa;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--light-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    transition: var(--transition);
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    gap: 8px;
}

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

.btn.lit:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(108, 99, 255, 0.3);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.project-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    cursor: pointer;
    perspective: 1000px;
    position: relative;
    overflow: hidden;
}

.project-card.rotate-on-hover:hover {
    transform: rotateY(180deg);
}

.project-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-radius: var(--border-radius);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.project-card.rotate-on-hover:hover .project-image img {
    transform: scale(1.1);
}

.project-info {
    margin-top: 15px;
    text-align: center;
}

.project-info h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.project-info p {
    color: var(--text-light);
    margin-bottom: 15px;
}

.project-tags {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.project-tag {
    background-color: rgba(108, 99, 255, 0.1);
    color: var(--primary-color);
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.project-links {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.btn.lit.small {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.demo-btn {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

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

@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

.achievements {
    padding: 100px 0;
    background-color: var(--white);
}

.dark-mode .achievements {
    background-color: var(--dark-color);
}

.achievements-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 8px 20px;
    border-radius: 30px;
    background-color: rgba(108, 99, 255, 0.1);
    color: var(--primary-color);
    border: none;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--primary-color);
    color: var(--white);
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.achievement-image {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    cursor: pointer;
    aspect-ratio: 4/3;
}

.achievement-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

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

.achievement-image:hover img {
    transform: scale(1.05);
}

.achievement-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: var(--white);
    padding: 20px;
    transform: translateY(100%);
    transition: var(--transition);
    text-align: center;
}

.achievement-image:hover .achievement-overlay {
    transform: translateY(0);
}

.achievement-overlay h3 {
    margin-bottom: 8px;
    font-size: 1.2rem;
    font-weight: 600;
}

.achievement-overlay p {
    margin-bottom: 15px;
    font-size: 0.9rem;
    opacity: 0.9;
}

.achievement-overlay .btn {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: 20px;
}

@media (max-width: 768px) {
    .achievements-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 20px;
    }

    .achievement-overlay {
        padding: 15px;
    }

    .achievement-overlay h3 {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .achievements-grid {
        grid-template-columns: 1fr;
    }
}