:root {
    --bg-color: #0d1117;
    --card-bg: #161b22;
    --border-color: #30363d;
    --text-main: #c9d1d9;
    --text-heading: #f0f6fc;
    --accent-color: #58a6ff;
    --accent-hover: #1f6feb;
    --text-muted: #8b949e;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 680px;
    width: 100%;
}

header {
    margin-bottom: 32px;
    text-align: center;
}

header h1 {
    color: var(--text-heading);
    font-size: 2.2rem;
    margin-bottom: 8px;
}

header p {
    color: var(--text-muted);
    font-size: 1.05rem;
}

.section-title {
    color: var(--text-heading);
    font-size: 1.2rem;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.grid {
    display: grid;
    gap: 16px;
    margin-bottom: 32px;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card h3 {
    color: var(--accent-color);
    margin-bottom: 8px;
    font-size: 1.15rem;
}

.card p {
    font-size: 0.95rem;
    color: var(--text-main);
    line-height: 1.5;
    margin-bottom: 12px;
}

.card-actions {
    display: flex;
    gap: 10px;
    margin-top: auto;
}

.card-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: #21262d;
    border: 1px solid var(--border-color);
    color: var(--text-heading);
    padding: 8px 14px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.85rem;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.card-btn:hover {
    background-color: #30363d;
    border-color: var(--accent-color);
}

.card-btn.primary {
    background-color: #238636;
    border-color: rgba(240, 246, 252, 0.1);
    color: #ffffff;
}

.card-btn.primary:hover {
    background-color: #2ea043;
}

.quick-links {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-heading);
    padding: 10px 18px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
    background-color: #21262d;
    border-color: var(--accent-color);
}

footer {
    margin-top: 40px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}