:root {
    --color-canvas-default: #ffffff;
    --color-canvas-subtle: #f6f8fa;
    --color-border-default: #d0d7de;
    --color-border-muted: #d8dee4;
    --color-fg-default: #24292f;
    --color-fg-muted: #57606a;
    --color-accent-fg: #0969da;
    --color-success-fg: #1a7f37;
    --color-success-subtle: #dafbe1;
    --color-attention-fg: #9a6700;
    --color-attention-subtle: #fff8c5;
    --color-danger-fg: #cf222e;
    --color-danger-subtle: #ffebe9;
    --color-btn-primary-bg: #1f883d;
    --color-btn-primary-hover-bg: #1a7f37;
}

body {
    font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";
    background-color: var(--color-canvas-default);
    color: var(--color-fg-default);
    line-height: 1.5;
    margin: 0;
}

a { text-decoration: none; }
a:hover { text-decoration: underline; }

/* Utilities */
.container-md { max-width: 768px; margin-right: auto; margin-left: auto; }
.p-responsive { padding-right: 16px; padding-left: 16px; }
.mt-6 { margin-top: 40px !important; }
.mb-4 { margin-bottom: 24px !important; }
.mb-6 { margin-bottom: 40px !important; }
.mr-3 { margin-right: 16px !important; }
.pt-4 { padding-top: 24px !important; }
.text-center { text-align: center; }
.d-flex { display: flex; }
.flex-items-center { align-items: center; }
.flex-justify-between { justify-content: space-between; }
.flex-auto { flex: 1 1 auto; }
.text-small { font-size: 12px; }
.text-bold { font-weight: 600; }
.color-fg-muted { color: var(--color-fg-muted); }
.color-border-muted { border-color: var(--color-border-muted); }
.border-top { border-top: 1px solid var(--color-border-muted); }

/* Typography */
.h1 { font-size: 32px; font-weight: 400; }
.f3 { font-size: 20px; font-weight: 300; }
.f6 { font-size: 12px; }

/* The Box Component */
.Box {
    background-color: var(--color-canvas-default);
    border: 1px solid var(--color-border-default);
    border-radius: 6px;
}
.Box-header {
    background-color: var(--color-canvas-subtle);
    border-bottom: 1px solid var(--color-border-default);
    padding: 16px;
    border-top-left-radius: 6px;
    border-top-right-radius: 6px;
}
.Box-title { font-size: 14px; font-weight: 600; margin: 0; }
.Box-body { padding: 16px; }
.Box-row {
    padding: 16px;
    border-top: 1px solid var(--color-border-muted);
}
.Box-row:first-of-type { border-top: none; }

/* Flash Alerts */
.Flash {
    position: relative;
    padding: 16px;
    color: var(--color-fg-default);
    background-color: var(--color-attention-subtle);
    border: 1px solid var(--color-attention-fg); /* Fallback */
    border-radius: 6px;
    border-color: rgba(27,31,35,0.15);
}
.Flash--success {
    background-color: var(--color-success-subtle);
    border-color: rgba(27,31,35,0.15);
}
.Flash--warning {
    background-color: var(--color-attention-subtle);
    border-color: rgba(27,31,35,0.15);
}
.Flash--danger {
    background-color: var(--color-danger-subtle);
    border-color: rgba(27,31,35,0.15);
}

/* Labels */
.Label {
    display: inline-block;
    padding: 0 7px;
    font-size: 12px;
    font-weight: 500;
    line-height: 18px;
    border-radius: 2em;
    border: 1px solid transparent;
}
.Label--secondary { background-color: var(--color-border-muted); color: var(--color-fg-default); }
.Label--success { background-color: var(--color-success-subtle); color: var(--color-success-fg); border-color: var(--color-success-fg); }
.Label--danger { background-color: var(--color-danger-subtle); color: var(--color-danger-fg); border-color: var(--color-danger-fg); }

/* Buttons */
.btn {
    position: relative;
    display: inline-block;
    padding: 5px 16px;
    font-size: 14px;
    font-weight: 500;
    line-height: 20px;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 1px solid;
    border-radius: 6px;
    appearance: none;
}
.btn-primary {
    color: #ffffff;
    background-color: var(--color-btn-primary-bg);
    border-color: rgba(27,31,35,0.15);
    box-shadow: 0 1px 0 rgba(27,31,35,0.1);
}
.btn-primary:hover { background-color: var(--color-btn-primary-hover-bg); text-decoration: none; }

/* Markdown/Content adjustments */
.markdown-body blockquote {
    padding: 0 1em;
    color: var(--color-fg-muted);
    border-left: 0.25em solid var(--color-border-default);
    margin: 0;
}
.Link--primary { color: var(--color-fg-default); font-weight: 600; }
.Link--muted { color: var(--color-fg-muted); }

/* Counter Badge */
.Counter {
    display: inline-block;
    min-width: 20px;
    padding: 0 6px;
    font-size: 12px;
    font-weight: 500;
    line-height: 18px;
    color: var(--color-fg-default);
    text-align: center;
    background-color: rgba(175,184,193,0.2);
    border-radius: 2em;
}

/* Loading Spinner placeholder */
.loader-icon {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--color-fg-muted);
    border-right-color: transparent;
    border-radius: 50%;
    animation: rotate 1s linear infinite;
}
@keyframes rotate { 100% { transform: rotate(360deg); } }