:root {
    --bg-gradient-from: #1a202c;
    --bg-gradient-to: #000000;
    --header-bg: #17b594;
    --card-bg: #2d3748;
    --text-color: #ffffff;
    --text-secondary: #a0aec0;
    --button-bg: #3182ce;
    --button-hover: #2c5282;
}

body, html {
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    background: linear-gradient(to bottom right, var(--bg-gradient-from), var(--bg-gradient-to));
    color: var(--text-color);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

header {
    background-color: var(--header-bg);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 10;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

h1 {
    font-size: 1.875rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    margin: 0;
}

.github-icon {
    margin-right: 1rem;
}

.visit-button {
    display: flex;
    align-items: center;
    background-color: var(--button-bg);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.3s;
}

.visit-button:hover {
    background-color: var(--button-hover);
}

.menu-icon {
    margin-right: 0.5rem;
}

.filter-container {
    margin-top: 1rem;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.filter-container label {
    margin-right: 0.5rem;
}

.filter-container select {
    padding: 0.5rem;
    border-radius: 0.25rem;
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--text-secondary);
}

main {
    padding: 2rem 0;
}

.repo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.repo-card {
    background-color: var(--card-bg);
    border-radius: 0.5rem;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.repo-card:hover {
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.2);
}

.repo-name {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.repo-name a {
    color: var(--text-color);
    text-decoration: none;
    display: flex;
    align-items: center;
}

.repo-name a:hover {
    color: #63b3ed;
}

.external-link-icon {
    margin-left: 0.5rem;
}

.repo-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.repo-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
}

.stat {
    display: flex;
    align-items: center;
}

.stat svg {
    margin-right: 0.25rem;
}

.loading {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
}

.loader {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.no-more {
    text-align: center;
    color: var(--text-secondary);
    margin-top: 2rem;
}

.repo-list-name {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .visit-button {
        margin-top: 1rem;
    }

    .repo-grid {
        grid-template-columns: 1fr;
    }

    .filter-container {
        justify-content: flex-start;
        margin-bottom: 1rem;
    }
}