:root {
    --bg-color: rgb(243, 244, 246);
    --card-bg: #ffffff;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --transition: all 0.25s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-dark);
    line-height: 1.5;
}

.container {
    max-width: 1150px;
    margin: 0 auto;
    padding: 30px 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
    position: relative;
}

#share-btn {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background-color: var(--card-bg);
    color: var(--primary);
    border: 1px solid var(--primary);
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

#share-btn:hover {
    background-color: var(--primary);
    color: white;
    transform: translateY(-50%) scale(1.05);
}

h1 {
    font-size: 1.8rem;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.subtitle {
    color: var(--text-light);
    font-size: 0.95rem;
    max-width: 600px;
    margin: 0 auto;
}

.software-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.software-card {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    padding: 18px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.software-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.software-logo {
    width: 70px;
    height: 70px;
    margin: 0 auto 15px;
}

.software-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.software-name {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 8px;
}

.software-desc {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 15px;
    min-height: 40px;
}

.download-btn {
    display: block;
    width: 100%;
    padding: 10px;
    background-color: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

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

.feedback-section {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    padding: 25px;
    text-align: center;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.feedback-title {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.feedback-desc {
    color: var(--text-light);
    margin-bottom: 18px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-size: 0.95rem;
}

#feedback-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 18px;
    background-color: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: var(--transition);
    font-size: 0.9rem;
}

#feedback-btn:hover {
    background-color: var(--primary-hover);
}

footer {
    text-align: center;
    padding: 18px;
    font-size: 0.85rem;
    color: var(--text-light);
}

@media (max-width: 768px) {
    .software-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }

    h1 {
        font-size: 1.5rem;
    }

    #share-btn {
        position: static;
        transform: none;
        margin-top: 15px;
    }

    header {
        margin-bottom: 20px;
    }
}

@media (max-width: 480px) {
    .software-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .container {
        padding: 20px 15px;
    }
}