:root {
    /* Color Palette - Systems Dark */
    --c-slate-950: #020617;
    --c-slate-900: #0f172a;

    --bg-body: var(--c-slate-950);       /* Deep Slate */
    --bg-surface: var(--c-slate-900);    /* Lighter Slate */
    --bg-surface-hover: #1e293b;         /* Slate 800 */
    --border-color: #1e293b;             /* Slate 800 */
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-accent: #38bdf8;   /* Cyan/Blue mix */

    --primary: #3b82f6;       /* Electric Blue */
    --primary-hover: #2563eb;
    --primary-glow: rgba(59, 130, 246, 0.5);
    
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;

    /* Spacing & Layout */
    --container-width: 1200px;
    --header-height: 70px;
    --radius: 8px;
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "SF Mono", "Segoe UI Mono", "Roboto Mono", monospace;
}

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

body {
    background-color: var(--bg-body);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* --- Layout Utilities --- */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.grid {
    display: grid;
    gap: 2rem;
}

.grid-2-cols { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3-cols { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-4-cols { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

/* --- Typography --- */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

h1 { font-size: 3.5rem; letter-spacing: -0.05em; }
h2 { font-size: 2.25rem; border-bottom: 1px solid var(--border-color); padding-bottom: 0.5rem; }
h3 { font-size: 1.5rem; color: var(--text-primary); }
p { margin-bottom: 1.5rem; color: var(--text-secondary); }
a { color: var(--primary); text-decoration: none; transition: 0.2s; }
a:hover { color: var(--text-accent); }
.accent-text { color: var(--primary); text-transform: uppercase; letter-spacing: 0.05em; font-size: 0.875rem; }

code, pre {
    font-family: var(--font-mono);
}

/* --- Header & Navigation --- */
header {
    height: var(--header-height);
    background: rgba(2, 6, 23, 0.9); /* Matches --c-slate-950 */
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo svg { height: 32px; width: 32px; fill: var(--text-primary); }
.logo-accent { fill: var(--primary); }

nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
    align-items: center;
}

nav a {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

nav a:hover, nav a.active {
    color: var(--primary);
}

.nav-cta {
    background: var(--primary);
    color: white !important;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
}

.nav-cta:hover {
    background: var(--primary-hover);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 0 15px var(--primary-glow);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    color: white;
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--bg-surface);
    border-color: var(--text-accent);
    color: var(--text-accent);
}

.btn-block { width: 100%; }

/* --- Sections --- */
.hero-section {
    padding: 6rem 0;
    text-align: center;
}

.hero-subtext {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 1.5rem auto;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2.5rem;
}

.daemon-section {
    background: linear-gradient(180deg, var(--bg-body) 0%, var(--bg-surface) 100%);
    padding: 5rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.daemon-layout {
    align-items: center;
}

.feature-list {
    list-style: none;
    margin-bottom: 2rem;
}

.feature-list li {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
}

.icon-check {
    width: 20px;
    height: 20px;
    fill: var(--success);
}

.link-arrow {
    font-weight: 600;
    display: inline-flex;
    align-items: center;
}

/* --- Terminal Mockup --- */
.terminal-mockup {
    background: #000;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 0;
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.1);
    font-family: var(--font-mono);
    overflow: hidden;
}

.terminal-header {
    background: var(--bg-surface);
    padding: 10px 15px;
    display: flex;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
}

.dot { width: 10px; height: 10px; border-radius: 50%; }
.red { background: #ef4444; }
.yellow { background: #f59e0b; }
.green { background: #10b981; }

.terminal-body {
    padding: 20px;
    color: #e2e8f0;
    font-size: 0.85rem;
}

.term-line { margin-bottom: 4px; }
.term-line.success { color: var(--success); }
.term-line.warning { color: var(--warning); }
.term-line.info { color: var(--text-accent); }
.term-line.separator { color: var(--border-color); margin: 8px 0; }

/* --- Cards --- */
.features-section { padding: 5rem 0; }
.section-title { text-align: center; margin-bottom: 3rem; }

.card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: var(--radius);
    transition: transform 0.2s, border-color 0.2s;
}

.card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.card-subtitle {
    color: var(--text-accent);
    margin-bottom: 0.5rem;
    font-style: italic;
    font-weight: 500;
}

.card-icon-wrapper {
    width: 48px;
    height: 48px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.card-icon { width: 24px; height: 24px; fill: var(--primary); }

/* --- Tables --- */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: var(--bg-surface);
    border-radius: var(--radius);
    overflow: hidden;
}

.data-table th, .data-table td {
    text-align: left;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    color: var(--text-accent);
    font-weight: 600;
    background: rgba(255, 255, 255, 0.02);
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg-surface-hover); }

/* --- Search Input --- */
.search-input {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
    margin-bottom: 2rem;
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.search-input::placeholder {
    color: var(--text-secondary);
}

/* --- FAQ Specific Styling --- */
#faq-content {
    max-width: 100%; /* Changed from 900px since it's now in a grid cell */
}

.faq-section {
    margin-bottom: 4rem;
}

.faq-section h2 {
    margin-top: 1rem;
    margin-bottom: 2rem;
    color: var(--primary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
    font-size: 2rem;
    letter-spacing: -0.02em;
    scroll-margin-top: 100px;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 2rem;
    padding-bottom: 2rem;
}

.faq-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.faq-question {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.4rem;
    color: var(--text-primary);
    font-weight: 700;
    scroll-margin-top: 100px; /* Offset for sticky header */
}

/* The wrapper for the answer content */
.faq-answer {
    padding-left: 1.5rem;
    border-left: 3px solid var(--bg-surface-hover);
    margin-top: 1rem;
}

.faq-answer:hover {
    border-left-color: var(--primary);
}

/* Styles for content INSIDE .faq-answer */
.faq-answer p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    background: transparent;
    padding: 0;
    border: none;
}

.faq-answer ul, .faq-answer ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
    color: var(--text-secondary);
    list-style-position: outside;
}

.faq-answer li {
    margin-bottom: 0.5rem;
    padding-left: 0.5rem;
}

.faq-answer table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.95rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    display: block;
    overflow-x: auto;
    white-space: nowrap;
}

@media (min-width: 768px) {
    .faq-answer table {
        display: table;
        white-space: normal;
    }
}

.faq-answer th, .faq-answer td {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    text-align: left;
    vertical-align: top;
}

.faq-answer th {
    background: rgba(59, 130, 246, 0.1);
    color: var(--text-primary);
    font-weight: 600;
}

.faq-answer td {
    background: transparent;
}

.faq-answer tr:nth-child(even) td {
    background: rgba(255, 255, 255, 0.02);
}

.faq-answer a {
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* --- Footer --- */
footer {
    border-top: 1px solid var(--border-color);
    padding: 4rem 0;
    margin-top: 4rem;
    background: var(--bg-surface);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-col h3 { color: var(--text-primary); margin-bottom: 0.5rem; }
.footer-col h4 { color: var(--text-accent); font-size: 0.9rem; text-transform: uppercase; margin-bottom: 1rem; border: none; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.5rem; }
.license { font-size: 0.8rem; color: var(--text-secondary); margin-top: 1rem; }

/* --- Mobile Menu --- */
#menu-toggle { display: none; }
.menu-icon { display: none; cursor: pointer; color: var(--text-primary); }

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .hero-actions { flex-direction: column; }
    .menu-icon { display: block; }
    
    nav ul {
        display: none;
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: var(--bg-surface);
        padding: 1rem;
        border-bottom: 1px solid var(--border-color);
        align-items: flex-start;
    }
    nav ul li { width: 100%; }
    nav a { display: block; padding: 0.5rem 0; }
    nav .nav-cta { text-align: center; }
    
    #menu-toggle:checked ~ ul { display: flex; }
    
    .manual-layout, .faq-layout { grid-template-columns: 1fr; }
    .manual-sidebar { position: static; margin-bottom: 2rem; border-bottom: 1px solid var(--border-color); padding-bottom: 1rem; }
}

/* --- Specific Page: Manual --- */
.manual-layout, .faq-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 3rem;
    padding-top: 2rem;
    padding-bottom: 4rem;
}

.manual-sidebar {
    position: sticky;
    top: 90px;
    height: fit-content;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    padding-right: 5px;
    
    /* Hide scrollbar for IE, Edge and Firefox */
    -ms-overflow-style: none;  /* IE and Edge */
    scrollbar-width: none;  /* Firefox */
}

/* Hide scrollbar for Chrome, Safari and Opera */
.manual-sidebar::-webkit-scrollbar {
    display: none;
}

.manual-sidebar h4 { color: var(--text-primary); margin-bottom: 1rem; }
.manual-sidebar ul { list-style: none; }
.manual-sidebar a { display: block; padding: 0.5rem 0; color: var(--text-secondary); border-left: 2px solid transparent; padding-left: 10px; }
.manual-sidebar a:hover, .manual-sidebar a.current { color: var(--primary); border-left-color: var(--primary); }

/* Nested TOC for FAQ */
.manual-sidebar ul ul {
    margin-left: 10px;
    margin-bottom: 10px;
    border-left: 1px solid var(--border-color);
}
.manual-sidebar ul ul a {
    font-size: 0.85rem;
    padding: 0.25rem 0 0.25rem 10px;
    border-left: none;
}
.manual-sidebar ul ul a:hover {
    color: var(--text-accent);
}

/* --- Manual Content Styling (NEW) --- */
.manual-doc {
    font-family: var(--font-main);
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 900px;
}

/* Level 1 Sections */
.manual-section-level-1 {
    margin-bottom: 4rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}
.manual-section-level-1:last-child {
    border-bottom: none;
}

.manual-title-level-1 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    border-bottom: none;
    scroll-margin-top: 100px;
}

/* Level 2 Sections */
.manual-section-level-2 {
    margin-top: 3rem;
    margin-left: 1.5rem;
    padding-left: 1.5rem;
    border-left: 2px solid var(--border-color);
}

.manual-title-level-2 {
    font-size: 1.4rem;
    color: var(--text-accent);
    margin-bottom: 1rem;
    border-bottom: none;
    scroll-margin-top: 100px;
}

/* Level 3 Sections */
.manual-section-level-3 {
    margin-top: 2rem;
    margin-left: 1.5rem;
    padding-left: 1rem;
    border-left: 1px dashed var(--border-color);
}

.manual-title-level-3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
    scroll-margin-top: 100px;
}

/* Common Text Elements */
.manual-doc p { margin-bottom: 1rem; }
.manual-doc ul { margin-bottom: 1.5rem; padding-left: 2rem; list-style-type: disc; }
.manual-doc li { margin-bottom: 0.5rem; }

.manual-doc b {
    font-weight: bold;
    font-family: var(--font-mono);
    color: var(--text-accent);
}

/* The Pre Tag */
.manual-doc pre {
    background: #000000;
    color: #e2e8f0;
    padding: 1.25rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    overflow-x: auto;
    margin: 1.5rem 0;
    white-space: pre;
}

.manual-indent {
    margin-left: 2rem;
    border-left: 3px solid var(--primary);
}

/* Option and Tag Lists (Vertical Layout) */
.manual-option-list, .manual-tag-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.manual-option-entry, .manual-tag-entry {
    display: block;
}

.manual-option-name, .manual-tag-name {
    font-family: var(--font-mono);
    color: var(--warning);
    font-weight: 700;
    display: block;
    margin-bottom: 0.0rem;
    /* word-break: break-all; - Removed to prevent awkward breaking of short words, allow natural flow */
}

.manual-option-description, .manual-tag-description {
    color: var(--text-secondary);
    margin-left: 2.5rem; /* Distinct indentation */
    line-height: 1.6;
}

/* Compare Grid */
.compare-container { overflow-x: auto; position: relative; }
.compare-table { min-width: 900px; }
.compare-table th { text-align: center; }
.compare-table td { text-align: center; vertical-align: middle; }
.feature-cell { text-align: left !important; font-weight: 600; color: var(--text-primary); }
.cell-subtext { font-size: 0.8rem; color: var(--text-secondary); font-weight: 400; margin-top: 2px; }
.check { color: var(--success); }
.cross { color: var(--danger); }
.partial { color: var(--warning); }
.snapraid-col { background: rgba(59, 130, 246, 0.1); border-left: 1px solid var(--primary); border-right: 1px solid var(--primary); }
.snapraid-header { color: var(--primary) !important; font-size: 1.2rem; }

/* Info Button and Popover */
.info-wrapper {
    display: inline-block;
    vertical-align: middle;
    margin-left: 5px;
}

.info-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    color: var(--primary);
    display: flex;
    align-items: center;
    transition: color 0.2s;
}

.info-btn:hover {
    color: var(--text-accent);
}

.global-popover {
    display: none;
    position: absolute;
    width: 300px;
    max-width: 90vw;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 1.25rem;
    border-radius: var(--radius);
    box-shadow: 0 10px 40px rgba(0,0,0,0.6);
    z-index: 2000;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
    text-align: left;
}

.global-popover.active {
    display: block;
    animation: popIn 0.2s ease-out;
}

@keyframes popIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.popover-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1999;
}

.popover-overlay.active {
    display: block;
}

/* Support Cards */
.support-card { display: flex; gap: 1rem; align-items: start; }
.support-icon { min-width: 40px; height: 40px; fill: var(--text-secondary); }
.donation-card { border-color: var(--warning); background: rgba(245, 158, 11, 0.05); }

/* UI Gallery */
.ui-gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; margin-top: 2rem; }
.ui-shot {
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    height: 280px;
    background: #000;
    position: relative;
    cursor: pointer;
}
.ui-shot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}
.ui-shot:hover img {
    transform: scale(1.25);
}
.ui-shot-caption { 
    position: absolute; 
    bottom: 0; 
    left: 0; 
    right: 0; 
    background: rgba(0,0,0,0.8); 
    color: white; 
    padding: 0.5rem; 
    font-size: 0.8rem; 
    text-align: center; 
}

/* Preview Overlay */
#ui-preview-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(2, 6, 23, 0.85); /* Slate 950 with opacity */
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none; /* Allows hover events to pass through to underlying elements */
    transition: opacity 0.3s ease;
}

#ui-preview-overlay.active {
    opacity: 1;
    pointer-events: auto; /* Enable clicks when active */
    cursor: zoom-out;
}

#ui-preview-img {
    max-width: 90%;
    max-height: 90%;
    border-radius: var(--radius);
    box-shadow: 0 0 50px rgba(0,0,0,0.5);
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

#ui-preview-overlay.active #ui-preview-img {
    transform: scale(1);
}