:root {
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --text-muted: #666666;
    --border-color: #e0e0e0;
    --accent-color: #2563eb;
    --accent-hover: #1d4ed8;
    --panel-bg: #f9fafb;
    --input-bg: #ffffff;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

[data-theme="dark"] {
    --bg-color: #0f172a;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --accent-color: #3b82f6;
    --accent-hover: #60a5fa;
    --panel-bg: #1e293b;
    --input-bg: #0f172a;
}

@media (prefers-color-scheme: dark) {
    [data-theme="system"] {
        --bg-color: #0f172a;
        --text-color: #f1f5f9;
        --text-muted: #94a3b8;
        --border-color: #334155;
        --accent-color: #3b82f6;
        --accent-hover: #60a5fa;
        --panel-bg: #1e293b;
        --input-bg: #0f172a;
    }
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    transition: background-color 0.2s, color 0.2s;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.controls-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

select, input {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--input-bg);
    color: var(--text-color);
    font-size: 0.9rem;
    outline: none;
}

select:focus, input:focus {
    border-color: var(--accent-color);
}

.trust-banner {
    background-color: #f0fdf4;
    padding: 1.25rem 1.5rem;
    border-radius: 10px;
    margin-bottom: 2rem;
    border: 2px solid #bbf7d0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    font-size: 1rem;
    font-weight: 700;
    color: #166534;
}

[data-theme="dark"] .trust-banner {
    background-color: #064e3b;
    border-color: #065f46;
    color: #d1fae5;
}

@media (prefers-color-scheme: dark) {
    [data-theme="system"] .trust-banner {
        background-color: #064e3b;
        border-color: #065f46;
        color: #d1fae5;
    }
}

.trust-icon {
    color: #22c55e;
    display: flex;
    align-items: center;
    margin-bottom: 0.15rem;
    transform: scale(1.2);
}

.github-note {
    font-size: 0.75rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    padding-top: 0.5rem;
    width: 100%;
    margin-top: 0.25rem;
    text-align: center;
}

.github-note a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s, opacity 0.2s;
}

.github-note a:hover {
    text-decoration: underline;
    opacity: 0.8;
}


.workspace {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

@media (max-width: 768px) {
    .workspace {
        grid-template-columns: 1fr;
    }
}

.config-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

label {
    font-weight: 600;
    font-size: 0.9rem;
}

.description {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 0.5rem 0;
}

.description svg {
    flex-shrink: 0;
    margin-top: 0.2rem;
    color: var(--accent-color);
}

.description div {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.description strong {
    color: var(--text-color);
    font-size: 0.95rem;
}

.explanation-box {
    background-color: var(--panel-bg);
    padding: 1rem;
    border-radius: 6px;
    border-left: 4px solid var(--accent-color);
    font-size: 0.85rem;
}

.explanation-box h4 {
    margin-bottom: 0.5rem;
}

.explanation-box p {
    margin-bottom: 0.5rem;
}

.explanation-box ul {
    list-style: disc;
    margin-left: 1.25rem;
}

.primary-btn {
    padding: 0.75rem 1.5rem;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
    font-size: 1rem;
}

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

.preview-panel {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

h2 {
    font-size: 1.1rem;
    font-weight: 700;
}

.tree-container {
    background-color: var(--panel-bg);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    font-family: 'Cascadia Code', 'Fira Code', 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.6;
    white-space: pre;
    overflow-x: auto;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

.tree-node {
    margin-left: 2rem;
    position: relative;
}

.tree-node::before {
    content: "├─ ";
    color: var(--text-muted);
    opacity: 0.6;
}

.tree-node.last::before {
    content: "└─ ";
    opacity: 0.6;
}

.tree-file {
    color: var(--text-muted);
}

.tree-folder {
    font-weight: bold;
    color: var(--accent-color);
}