:root {
    --bg-color: #030712;
    --card-bg: #111827; /* Darker card */
    --card-border: #1f2937;
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --accent: #3b82f6;
    --accent-glow: rgba(59, 130, 246, 0.3);
    --glass-bg: rgba(17, 24, 39, 0.7);
    --font-main: 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --gradient-title: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #f472b6 100%);
    --gradient-bg: radial-gradient(circle at 50% 0%, rgba(59, 130, 246, 0.15), transparent 60%);
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    background-image: var(--gradient-bg);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 20px;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    z-index: 1;
}

/* Glass Panel Premium */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* Hero */
.hero { text-align: center; padding: 60px 0 30px; }
.hero h1 { 
    font-size: 3.5rem; 
    font-weight: 800; 
    letter-spacing: -1px; 
    margin-bottom: 15px;
    color: var(--text-primary);
}
.hero .gradient-text { 
    background: var(--gradient-title);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.hero p { font-size: 1.2rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto; }

/* Floating Command Bar */
.floating-command-bar {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
}
.command-section {
    padding: 1.5rem;
    max-width: 700px;
    width: 100%;
    border-color: rgba(255,255,255,0.1);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}
.command-wrapper {
    display: flex;
    align-items: center;
    background: #000;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 0.5rem;
    gap: 1rem;
}
.command-text {
    flex: 1;
    font-family: var(--font-mono);
    color: var(--accent);
    padding: 0 1rem;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow-x: auto;
}
.prefix { color: #6b7280; margin-right: 0.5rem; user-select: none; }
.btn-primary {
    background: var(--accent);
    color: white;
    border: none;
    padding: 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
}
.btn-primary:hover { background: #2563eb; transform: translateY(-1px); }

/* Sidebar & Layout */
.preview-layout {
    display: grid;
    grid-template-columns: 240px 280px 1fr;
    min-height: 600px;
    overflow: hidden;
    border: 1px solid var(--card-border);
}

.sidebar {
    background: rgba(17, 24, 39, 0.4);
    border-right: 1px solid var(--card-border);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    overflow-y: auto;
    max-height: 80vh;
}

.sidebar h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: #6b7280;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.sidebar-group-header {
    font-size: 0.8rem;
    color: var(--text-primary);
    font-weight: 600;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    padding-left: 10px;
}

/* Items */
.language-item, .template-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    cursor: pointer; /* This now applies to the text/row */
    transition: all 0.2s;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.language-item:hover, .template-item:hover {
    background: rgba(255,255,255,0.03);
    color: var(--text-primary);
}

/* Active Preview State (Clicked text) */
.language-item.preview-active, .template-item.preview-active {
    background: rgba(255, 255, 255, 0.08); /* Neutral active mostly */
    color: var(--text-primary);
}

/* Selected States (via Checkbox) */
.language-item.selected-main {
    border: 1px solid rgba(16, 185, 129, 0.4); /* Green border */
    background: rgba(16, 185, 129, 0.1);
}
.language-item.selected-main .template-checkbox {
    accent-color: #10b981; /* Green */
}

.language-item.selected-additional {
    border: 1px solid rgba(59, 130, 246, 0.4); /* Blue border */
    background: rgba(59, 130, 246, 0.1);
}
.language-item.selected-additional .template-checkbox {
    accent-color: var(--accent); /* Blue */
}

.template-item.active {
     background: rgba(59, 130, 246, 0.1);
     color: var(--accent);
}

.template-checkbox {
    width: 16px; height: 16px;
    cursor: pointer;
}

/* Main Preview */
.main-preview {
    background: var(--bg-color);
    display: flex;
    flex-direction: column;
}

.preview-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--card-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(17, 24, 39, 0.5);
}

.preview-header h3 {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-primary);
}

.view-toggle {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 2px;
    border-radius: 6px;
    display: flex;
}

.toggle-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 4px 12px;
    font-size: 0.8rem;
    cursor: pointer;
    border-radius: 4px;
}
.toggle-btn.active {
    background: var(--card-border);
    color: var(--text-primary);
}

.preview-content-area {
    padding: 0;
    flex: 1;
    overflow-y: auto;
    position: relative;
}

.view-pane {
    padding: 2rem;
    color: var(--text-primary);
}

#rawView {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    color: #e5e7eb;
    white-space: pre-wrap;
    display: none;
}

/* Markdown Overrides */
.markdown-body {
    background: transparent !important;
    color: var(--text-primary) !important;
}
.markdown-body pre { background: #161b22 !important; }

/* Scrollbars */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #374151; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #4b5563; }

@media (max-width: 1024px) {
    .preview-layout { grid-template-columns: 200px 1fr; }
    .language-sidebar { display: none; /* Hide toggle for mobile for now? Or move to top */ }
}