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

/* body style */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(to bottom, #f9fafb 0%, #ffffff 50%, #f9fafb 100%);
    color: #333;
    padding: 40px 20px;
}

/* main wrapper */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

/* heading */
.page-heading {
    font-size: 3em;
    margin-bottom: 10px;
}

/* subtext */
.subheading {
    font-size: 1.2em;
    margin-bottom: 40px;
    color: #666;
}

/* card layout grid */
.card-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
}

/* each project card */
.project-card {
    width: 300px;
    background: white;
    padding: 25px;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

/* hover scale effect */
.project-card:hover {
    transform: scale(1.03);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

/* image inside card */
.project-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border: 1px solid black;
    border-radius: 15px;
    margin-bottom: 20px;
}

/* project title */
.project-title {
    font-size: 1.5em;
    margin-bottom: 10px;
}

/* small description */
.project-desc {
    font-size: 0.95em;
    margin-bottom: 20px;
    color: #555;
}

/* group buttons */
.btn-group {
    display: flex;
    justify-content: space-between;
    gap: 10px;
}

/* both buttons */
.download-btn,
.code-btn {
    flex: 1;
    padding: 10px;
    border-radius: 12px;
    font-weight: bold;
    cursor: pointer;
    font-size: 0.95em;
    border: none;
    transition: all 0.3s ease;
}

/* download btn (yellow) */
.download-btn {
    background-color: #ffc400;
    color: #000;
}

.download-btn:hover {
    background-color: #000;
    color: #fff;
}

/* code btn (black) */
.code-btn {
    background-color: #000;
    color: #fff;
}

.code-btn:hover {
    background-color: #ffc400;
    color: #000;
}

.add-btn{
    display: none;
}

/* responsive design */
@media (max-width: 768px) {
    .card-container {
        flex-direction: column;
        align-items: center;
    }

    .project-card {
        width: 90%;
    }
}