/* Premium Minimal Architectural Style Variable System */
:root {
    --bg-surface: #f8fafc;
    --bg-element: #ffffff;
    --brand-primary: #2563eb;
    --brand-dark: #1e3a8a;
    --text-core: #0f172a;
    --text-subtle: #475569;
    --border-soft: #e2e8f0;
    --radius-premium: 12px;
}

/* Dark Layout Theme Override Matrix */
[data-theme="dark"] {
    --bg-surface: #0f172a;
    --bg-element: #1e293b;
    --brand-primary: #3b82f6;
    --brand-dark: #60a5fa;
    --text-core: #f8fafc;
    --text-subtle: #94a3b8;
    --border-soft: #334155;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-surface);
    color: var(--text-core);
    margin: 0;
    padding: 0;
    line-height: 1.7;
    transition: background-color 0.3s, color 0.3s;
}

/* Fixed Floating Header Styling */
.app-header {
    background-color: var(--bg-element);
    border-bottom: 1px solid var(--border-soft);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 14px 24px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.03);
}

.nav-container {
    max-width: 1050px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--brand-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.site-logo span {
    color: var(--text-core);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.live-pulse {
    background-color: #ef4444;
    color: #ffffff;
    font-size: 0.75rem;
    padding: 3px 10px;
    border-radius: 20px;
    font-weight: 700;
    text-transform: uppercase;
    animation: beacon 1.8s infinite ease-in-out;
}

@keyframes beacon {
    50% { opacity: 0.4; }
}

.theme-btn {
    background-color: var(--brand-primary);
    color: #ffffff;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    transition: background-color 0.2s;
}

.theme-btn:hover {
    background-color: #1d4ed8;
}

/* Main Layout Positioning */
.main-layout-container {
    max-width: 1050px;
    margin: 30px auto;
    padding: 0 20px;
}

/* Premium Structured Ad Container Box */
.ad-billing-wrapper {
    max-width: 1050px;
    margin: 25px auto 0 auto;
    padding: 0 20px;
    text-align: center;
}

.ad-slot-container {
    background-color: var(--bg-element);
    border: 1px dashed var(--border-soft);
    border-radius: var(--radius-premium);
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.01);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.ad-disclosure {
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-subtle);
    letter-spacing: 1px;
    margin-bottom: 5px;
    display: block;
}

.iframe-ad-wrapper {
    max-width: 100%;
    overflow-x: auto;
    display: flex;
    justify-content: center;
}

/* Editorial Overview Intro Block */
.editorial-hero-card {
    background-color: var(--bg-element);
    border: 1px solid var(--border-soft);
    border-left: 5px solid var(--brand-primary);
    padding: 30px;
    border-radius: var(--radius-premium);
    margin-bottom: 30px;
}

.editorial-hero-card h2 {
    margin-top: 0;
    font-size: 1.5rem;
    font-weight: 700;
}

.editorial-hero-card p {
    color: var(--text-subtle);
    font-size: 1rem;
    margin-bottom: 0;
}

/* Section Separation Text */
.section-divider-title {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text-core);
    margin: 40px 0 20px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-divider-title::before {
    content: "";
    display: inline-block;
    width: 5px;
    height: 22px;
    background-color: var(--brand-primary);
    border-radius: 3px;
}

/* Knowledge Cards Core Layout */
.knowledge-feed-card {
    background-color: var(--bg-element);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-premium);
    padding: 35px;
    margin-bottom: 35px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.01);
    transition: box-shadow 0.3s;
}

.knowledge-feed-card:hover {
    box-shadow: 0 12px 24px -8px rgba(0, 0, 0, 0.04);
}

.category-pill {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--brand-primary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 8px;
    display: inline-block;
}

.card-headline {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-core);
    margin: 0 0 10px 0;
}

.card-publishing-meta {
    font-size: 0.82rem;
    color: var(--text-subtle);
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-soft);
    padding-bottom: 12px;
}

.card-rich-text p {
    font-size: 1.02rem;
    color: var(--text-core);
    margin-bottom: 18px;
    text-align: justify;
}

.card-rich-text h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-core);
    margin: 30px 0 12px 0;
}

.editorial-ordered-list, .editorial-unordered-list {
    padding-left: 24px;
    margin: 16px 0;
}

.editorial-ordered-list li, .editorial-unordered-list li {
    margin-bottom: 8px;
    color: var(--text-core);
}

/* High-Scale Responsive Structural Table Styling */
.responsive-table-box {
    width: 100%;
    overflow-x: auto;
    margin: 24px 0;
    border: 1px solid var(--border-soft);
    border-radius: 8px;
}

.editorial-data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
    background-color: var(--bg-element);
    min-width: 600px;
}

.editorial-data-table th {
    background-color: var(--bg-surface);
    color: var(--text-core);
    font-weight: 700;
    padding: 14px 16px;
    text-align: left;
    border-bottom: 2px solid var(--border-soft);
}

.editorial-data-table td {
    padding: 14px 16px;
    color: var(--text-core);
    border-bottom: 1px solid var(--border-soft);
}

.editorial-data-table tr:last-child td {
    border-bottom: none;
}

.editorial-data-table tr:nth-child(even) {
    background-color: var(--bg-surface);
}

/* Standard Compliant Footer Layer */
.app-footer-layer {
    background-color: var(--bg-element);
    border-top: 1px solid var(--border-soft);
    padding: 40px 24px;
    text-align: center;
    margin-top: 80px;
    font-size: 0.88rem;
    color: var(--text-subtle);
}

.footer-navigation-links {
    margin-bottom: 15px;
}

.footer-navigation-links a {
    color: var(--text-core);
    text-decoration: none;
    margin: 0 14px;
    font-weight: 600;
}

.footer-navigation-links a:hover {
    color: var(--brand-primary);
}