:root {
    --bg-color: #f8fafc;
    --surface-color: #ffffff;
    --surface-border: rgba(0, 0, 0, 0.06);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --accent-color: #ea580c; /* Saffron-orange */
    --accent-glow: rgba(234, 88, 12, 0.06);
    --accent-teal: #0d9488;
    --hover-bg: rgba(0, 0, 0, 0.02);
    --border-color: rgba(0, 0, 0, 0.08);
    --shadow-color: rgba(15, 23, 42, 0.06);
    --code-bg: #f1f5f9;
    --code-color: #0f172a;
    
    --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

html[data-theme="dark"] {
    --bg-color: #080c10;
    --surface-color: #0f1520;
    --surface-border: rgba(255, 255, 255, 0.05);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --accent-color: #f97316; /* Vibrant Saffron */
    --accent-glow: rgba(249, 115, 22, 0.12);
    --accent-teal: #14b8a6;
    --hover-bg: rgba(255, 255, 255, 0.03);
    --border-color: rgba(255, 255, 255, 0.08);
    --shadow-color: rgba(0, 0, 0, 0.5);
    --code-bg: #16202c;
    --code-color: #f8fafc;
}

/* System Preference Dark Mode Default if no theme selected */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg-color: #080c10;
        --surface-color: #0f1520;
        --surface-border: rgba(255, 255, 255, 0.05);
        --text-primary: #f1f5f9;
        --text-secondary: #94a3b8;
        --accent-color: #f97316;
        --accent-glow: rgba(249, 115, 22, 0.12);
        --accent-teal: #14b8a6;
        --hover-bg: rgba(255, 255, 255, 0.03);
        --border-color: rgba(255, 255, 255, 0.08);
        --shadow-color: rgba(0, 0, 0, 0.5);
        --code-bg: #16202c;
        --code-color: #f8fafc;
    }
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Layout */
.app-container {
    display: flex;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 300px;
    background: var(--surface-color);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
    z-index: 10;
    box-shadow: 4px 0 24px var(--shadow-color);
    flex-shrink: 0;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.brand {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -0.5px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.brand-orange {
    color: var(--accent-color);
}

.brand-tag {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-secondary);
    font-weight: 700;
}

/* Search Box */
.search-container {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input {
    width: 100%;
    padding: 0.6rem 2rem 0.6rem 0.75rem;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-primary);
    border-radius: 6px;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    outline: none;
    transition: all 0.2s;
}

.search-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-clear {
    position: absolute;
    right: 0.5rem;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 1rem;
    display: none;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
}

/* Nav Tree */
.nav-tree {
    flex-grow: 1;
    overflow-y: auto;
    padding: 1.25rem;
}

.volume-group {
    margin-bottom: 1.5rem;
}

.volume-header {
    font-family: var(--font-display);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-secondary);
    font-weight: 800;
    margin-bottom: 0.5rem;
    padding-left: 0.5rem;
}

.chapter-list {
    list-style: none;
}

.chapter-item {
    margin-bottom: 0.25rem;
}

.chapter-btn {
    width: 100%;
    text-align: left;
    background: transparent;
    border: none;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.2s;
}

.chapter-btn:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.chapter-btn.active {
    background: var(--accent-glow);
    color: var(--accent-color);
    font-weight: 600;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.theme-btn {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    font-family: var(--font-sans);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.theme-btn:hover {
    background: var(--hover-bg);
}

.footer-credit {
    font-size: 0.65rem;
    color: var(--text-secondary);
    text-align: right;
    font-family: var(--font-mono);
}

/* Content Area */
.content-wrapper {
    flex-grow: 1;
    height: 100%;
    overflow-y: auto;
    background: var(--bg-color);
    display: flex;
    flex-direction: column;
}

.content-body {
    max-width: 820px;
    width: 100%;
    margin: 0 auto;
    padding: 3rem 2rem 5rem 2rem;
    box-sizing: border-box;
}

/* Hero Landing Page */
.hero-container {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-header {
    text-align: center;
    padding: 2.5rem 0 1rem 0;
    position: relative;
}

.hero-glow {
    position: absolute;
    top: -50px;
    left: 50%;
    transform: translateX(-50%);
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    z-index: -1;
    pointer-events: none;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -1px;
    margin-bottom: 0.75rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    font-weight: 500;
}

.grid-title {
    font-family: var(--font-display);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-secondary);
    font-weight: 700;
    margin-bottom: -1rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
}

.card {
    background: var(--surface-color);
    border: 1px solid var(--surface-border);
    border-radius: 12px;
    padding: 1.75rem;
    cursor: pointer;
    box-shadow: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -2px var(--shadow-color);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    position: relative;
    overflow: hidden;
    transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent-color);
    opacity: 0;
    transition: opacity 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-color);
    box-shadow: 0 12px 20px -8px var(--shadow-color), 0 0 15px var(--accent-glow);
}

.card:hover::before {
    opacity: 1;
}

.card-icon {
    font-size: 1.5rem;
}

.card-title {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
}

.card-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.card-meta {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Markdown Rendering Custom Styles */
.markdown-body {
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.chapter-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.back-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.back-btn:hover {
    color: var(--text-primary);
}

.chapter-volume-tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-color);
    font-weight: 700;
}

/* Markdown Styles */
.markdown-body h1 {
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.markdown-body h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: 2rem;
    margin-bottom: 1rem;
    padding-bottom: 0.3rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.markdown-body h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.markdown-body p {
    margin-bottom: 1.25rem;
    font-size: 1rem;
    color: var(--text-primary);
    opacity: 0.95;
}

.markdown-body strong {
    font-weight: 700;
}

.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9rem;
}

.markdown-body th {
    background: var(--hover-bg);
    font-weight: 700;
    text-align: left;
    padding: 0.75rem 1rem;
    border-bottom: 2px solid var(--border-color);
}

.markdown-body td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.markdown-body ul, .markdown-body ol {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

.markdown-body li {
    margin-bottom: 0.5rem;
}

.markdown-body code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    background: var(--code-bg);
    color: var(--code-color);
    padding: 0.15em 0.4em;
    border-radius: 4px;
}

.markdown-body pre {
    background: var(--code-bg);
    padding: 1.25rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1.5rem 0;
    border: 1px solid var(--surface-border);
}

.markdown-body pre code {
    padding: 0;
    background: transparent;
    color: inherit;
    font-size: 0.85rem;
}

/* Alert panels */
.markdown-body blockquote {
    padding: 1rem 1.25rem;
    margin: 1.5rem 0;
    border-left: 4px solid var(--border-color);
    background: var(--hover-bg);
    border-radius: 0 8px 8px 0;
}

.markdown-body blockquote > p:last-child {
    margin-bottom: 0;
}

.markdown-body blockquote.alert-note {
    border-left-color: #0ea5e9;
    background: rgba(14, 165, 233, 0.05);
}

.markdown-body blockquote.alert-tip {
    border-left-color: #10b981;
    background: rgba(16, 185, 129, 0.05);
}

.markdown-body blockquote.alert-important {
    border-left-color: var(--accent-color);
    background: var(--accent-glow);
}

.markdown-body blockquote.alert-warning {
    border-left-color: #f59e0b;
    background: rgba(245, 158, 11, 0.05);
}

.markdown-body blockquote.alert-caution {
    border-left-color: #ef4444;
    background: rgba(239, 68, 68, 0.05);
}

.alert-header {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.35rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

/* Search results display */
.search-results-overlay {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    animation: fadeIn 0.3s ease;
}

.search-result-item {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 1.25rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.search-result-item:hover {
    border-color: var(--accent-color);
    box-shadow: 0 4px 12px var(--shadow-color);
    transform: translateY(-1px);
}

.search-result-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.search-result-match {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.search-result-crumbs {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

/* Mobile responsive */
@media (max-width: 768px) {
    body {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .sidebar-header {
        padding: 1rem;
    }
    
    .search-container {
        padding: 0.5rem 1rem;
    }
    
    .nav-tree {
        display: none; /* Can be toggled on mobile if we want */
    }
    
    .content-body {
        padding: 2rem 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
}

/* User Badge in Sidebar */
.user-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--hover-bg);
    border: 1px solid var(--border-color);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--text-primary);
    margin-top: 0.5rem;
    align-self: flex-start;
}
.user-dot {
    width: 6px;
    height: 6px;
    background-color: var(--accent-teal);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--accent-teal);
}

/* Login Screen Styles */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 70vh;
    animation: fadeInUp 0.4s ease-out;
}
.login-card {
    background: var(--surface-color);
    border: 1px solid var(--surface-border);
    border-radius: 16px;
    padding: 2.5rem;
    width: 100%;
    max-width: 460px;
    box-shadow: 0 20px 40px var(--shadow-color), 0 0 25px var(--accent-glow);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.login-header {
    margin-bottom: 2rem;
}
.login-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}
.login-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.login-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.login-btn-proid {
    background: linear-gradient(135deg, var(--accent-color) 0%, #d34100 100%);
    color: #ffffff;
    border: none;
    font-weight: 700;
    box-shadow: 0 4px 14px var(--accent-glow);
}
.login-btn-proid:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--accent-glow);
}
.login-btn-google {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}
.login-btn-google:hover {
    background: var(--hover-bg);
}
.login-action-btn {
    padding: 0.8rem 1rem;
    border-radius: 8px;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s;
}
.login-fineprint {
    margin-top: 1.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Locked Screen Overlay */
.locked-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
    padding: 2rem;
}
.locked-card {
    background: var(--surface-color);
    border: 1px dashed var(--accent-color);
    border-radius: 16px;
    padding: 3rem 2rem;
    text-align: center;
    max-width: 500px;
    box-shadow: 0 8px 30px var(--shadow-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
}
.locked-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}
.locked-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
}
.locked-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Cost Estimator Styles */
.estimator-container {
    background: var(--surface-color);
    border: 1px solid var(--surface-border);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px var(--shadow-color);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.estimator-form {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}
@media (max-width: 600px) {
    .estimator-form {
        grid-template-columns: 1fr;
    }
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.form-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
}
.form-select, .form-range-val {
    padding: 0.6rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    outline: none;
}
.form-select:focus {
    border-color: var(--accent-color);
}
.range-slider-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.form-range {
    flex-grow: 1;
    accent-color: var(--accent-color);
}
.estimator-btn {
    grid-column: 1 / -1;
    background: var(--accent-color);
    color: #ffffff;
    border: none;
    padding: 0.8rem;
    border-radius: 6px;
    font-family: var(--font-sans);
    font-weight: 700;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}
.estimator-btn:hover {
    opacity: 0.95;
    box-shadow: 0 4px 12px var(--accent-glow);
}
.receipt-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    font-family: var(--font-sans);
    margin-top: 1rem;
    animation: fadeIn 0.3s ease;
}
.receipt-header {
    border-bottom: 2px dashed var(--border-color);
    padding-bottom: 0.75rem;
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.receipt-title {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.receipt-stamp {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    background: var(--accent-glow);
    color: var(--accent-color);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-weight: 700;
}
.receipt-row {
    display: flex;
    justify-content: space-between;
    padding: 0.4rem 0;
    font-size: 0.85rem;
    border-bottom: 1px solid var(--surface-border);
}
.receipt-row.total {
    border-top: 2px solid var(--border-color);
    border-bottom: none;
    font-weight: 800;
    font-size: 1rem;
    padding-top: 0.75rem;
    margin-top: 0.5rem;
}

/* Segmented Sidebar Tab Switcher */
.sidebar-tabs {
    display: flex;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2px;
    margin: 1rem 1.25rem 0.25rem 1.25rem;
    gap: 2px;
}
.sidebar-tab-btn {
    flex: 1;
    border: none;
    background: transparent;
    padding: 0.5rem 0.25rem;
    border-radius: 6px;
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    color: var(--text-secondary);
    text-align: center;
    transition: all 0.2s ease;
}
.sidebar-tab-btn:hover {
    color: var(--text-primary);
    background: var(--hover-bg);
}
.sidebar-tab-btn.active {
    background: var(--surface-color);
    color: var(--accent-color);
    box-shadow: 0 1px 3px var(--shadow-color);
}

/* Compliance Card Grid (HUD) */
.compliance-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}
@media (max-width: 600px) {
    .compliance-grid {
        grid-template-columns: 1fr;
    }
}
.compliance-card {
    background: var(--surface-color);
    border: 1px solid var(--surface-border);
    border-radius: 10px;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    position: relative;
    box-shadow: 0 2px 4px var(--shadow-color);
}
.compliance-days {
    font-family: var(--font-mono);
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1;
}
.compliance-days.danger {
    color: #ef4444;
}
.compliance-days.warning {
    color: #f59e0b;
}
.compliance-days.safe {
    color: var(--accent-teal);
}
.compliance-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.95rem;
}
.compliance-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* UPI QR Code Simulator (HUD) */
.upi-qr-wrapper {
    background: #ffffff;
    border: 4px solid var(--border-color);
    padding: 1rem;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 200px;
    height: 200px;
    margin: 1.5rem auto 0.5rem auto;
}
.upi-qr-mock-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 4px;
    width: 140px;
    height: 140px;
}
.upi-qr-block {
    background: #000000;
    border-radius: 2px;
}
.upi-qr-block.empty {
    background: transparent;
}
.upi-qr-label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Checklist Layout (HUD) */
.checklist-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1.5rem;
}
.checklist-item-row {
    background: var(--surface-color);
    border: 1px solid var(--surface-border);
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    box-shadow: 0 1px 3px var(--shadow-color);
    transition: all 0.2s;
}
.checklist-item-row:hover {
    border-color: var(--accent-color);
    background: var(--hover-bg);
}
.checklist-checkbox {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-color);
    cursor: pointer;
    margin-top: 0.15rem;
    flex-shrink: 0;
}
.checklist-text-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}
.checklist-item-title {
    font-weight: 700;
    font-size: 0.9rem;
}
.checklist-item-title.checked {
    text-decoration: line-through;
    color: var(--text-secondary);
}
.checklist-item-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Wiki Editor Layout (Wiki) */
.wiki-editor-card {
    background: var(--surface-color);
    border: 1px solid var(--surface-border);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px var(--shadow-color);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}
.wiki-input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.wiki-input {
    padding: 0.6rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    outline: none;
}
.wiki-input:focus, .wiki-textarea:focus {
    border-color: var(--accent-color);
}
.wiki-textarea {
    min-height: 250px;
    padding: 0.75rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.5;
    outline: none;
    resize: vertical;
}
.wiki-draft-badge {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    background: #eab308;
    color: #000000;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-block;
    align-self: flex-start;
}

.hidden {
    display: none !important;
}

/* Split Path Landing Page Styles */
.split-hero {
    text-align: center;
    padding: 3.5rem 2rem 2.5rem 2rem;
    position: relative;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 3rem;
    background: linear-gradient(180deg, rgba(234, 88, 12, 0.04) 0%, transparent 100%);
    border-radius: 16px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.1);
}

html[data-theme="dark"] .split-hero {
    background: linear-gradient(180deg, rgba(249, 115, 22, 0.06) 0%, transparent 100%);
}

.split-hero-tag {
    font-family: var(--font-display);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 4px;
    color: var(--accent-color);
    font-weight: 800;
    margin-bottom: 0.75rem;
}

.split-hero-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 3.75rem;
    font-weight: 900;
    line-height: 1.1;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.split-hero-subtitle {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.split-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
    margin-bottom: 4rem;
}

@media (max-width: 768px) {
    .split-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .split-hero-title {
        font-size: 2.5rem;
    }
    .split-card {
        padding: 1.75rem !important;
    }
}

.split-card {
    background: var(--surface-color);
    border: 1px solid var(--surface-border);
    border-radius: 16px;
    padding: 3rem 2.5rem;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    box-shadow: 0 15px 35px -15px var(--shadow-color);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s, box-shadow 0.3s;
}

.split-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-teal));
    opacity: 0.8;
}

.split-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-color);
    box-shadow: 0 25px 50px -20px var(--shadow-color), 0 0 25px var(--accent-glow);
}

.split-card-num {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--border-color);
    opacity: 0.35;
    position: absolute;
    top: 1.5rem;
    right: 2rem;
    line-height: 1;
}

.split-card-header {
    margin-bottom: 1.5rem;
}

.split-card-tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-secondary);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.split-card-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 2.25rem;
    font-weight: 900;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.2;
}

.split-card-tagline {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--accent-color);
    margin-top: 0.5rem;
    margin-bottom: 1.25rem;
}

.split-card-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2.5rem;
}

.split-card-sections {
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    margin-top: auto;
}

.split-section-title {
    font-family: var(--font-display);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-secondary);
    font-weight: 800;
    margin-bottom: 1.25rem;
}

.split-links-grid {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.split-link-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
    cursor: pointer;
}

.split-link-item:hover {
    background: var(--surface-color);
    border-color: var(--accent-color);
    transform: translateX(4px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.split-link-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.split-link-text {
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.4;
}

.split-link-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-left: auto;
    font-family: var(--font-mono);
}