:root {
    --primary-color: #238636;
    --primary-hover: #2ea043;
    --bg-color: #0d1117;
    --card-bg: #161b22;
    --text-color: #c9d1d9;
    --text-secondary: #8b949e;
    --border-color: #30363d;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

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

header h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

header p {
    color: var(--text-secondary);
}

.search-card {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
}

.search-card input {
    flex: 1;
    padding: 12px 16px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-color);
    font-size: 1rem;
}

.search-card input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

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

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

.profile-card,
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 24px;
    margin-bottom: 20px;
}

.profile-header {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
}

#avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
}

.profile-info {
    flex: 1;
}

.profile-info h2 {
    font-size: 1.8rem;
    margin-bottom: 4px;
}

.profile-info #username {
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.profile-info #bio {
    margin-bottom: 12px;
}

.profile-meta {
    display: flex;
    gap: 16px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    flex-wrap: wrap;
}

.profile-meta span:before {
    content: '📍 ';
}

.profile-meta a {
    color: var(--primary-color);
    text-decoration: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
}

.stat-card {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 16px;
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.chart-container {
    max-width: 500px;
    margin: 0 auto;
    padding: 20px;
}

.repo-controls {
    margin-bottom: 20px;
}

.repo-controls select {
    padding: 8px 12px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-color);
}

.repo-item {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 16px;
    margin-bottom: 12px;
    transition: all 0.3s;
}

.repo-item:hover {
    border-color: var(--primary-color);
}

.repo-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    margin-bottom: 8px;
    display: inline-block;
}

.repo-name:hover {
    text-decoration: underline;
}

.repo-description {
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.repo-meta {
    display: flex;
    gap: 16px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.repo-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.language-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .search-card {
        flex-direction: column;
    }
}