/* =========================================
   WRAPPER & SYSTEM STYLES (S-Tier)
   ========================================= */
.ioa-key-articles-s-tier {
    position: relative;
    width: 100%;
}

.ioa-key-articles-s-tier *,
.ioa-key-articles-s-tier *::before,
.ioa-key-articles-s-tier *::after {
    box-sizing: border-box;
}

/* =========================================
   TELEPORT SLOTS (Gold Standard Feature)
   ========================================= */
.ioa-teleport-slot {
    min-height: 0;
    transition: all 0.3s ease;
    margin-bottom: 0;
    width: 100%;
}

.ioa-teleport-slot.has-content {
    margin-bottom: 2rem;
    animation: ioa-fade-in 0.5s ease;
}

/* Editor Visuals - Visible only in Elementor Editor (.is-editor-mode added via PHP) */
.is-editor-mode .ioa-teleport-slot {
    min-height: 40px;
    border: 1px dashed rgba(30, 58, 138, 0.4);
    background: rgba(30, 58, 138, 0.05);
    margin: 1rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
}

.is-editor-mode .ioa-teleport-slot::before {
    content: attr(data-label);
    font-size: 11px;
    color: #1e3a8a;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

@keyframes ioa-fade-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* =========================================
   IOA KEY ARTICLES STYLES
   ========================================= */

.ea3g-articles-container {
    /* Core Palette */
    --color-primary: #1e3a8a;
    --color-primary-dark: #1e40af;
    --color-primary-light: rgba(30, 58, 138, 0.08);
    --color-surface: #ffffff;
    --color-surface-alt: #f3f4f6;
    --color-background: #f9fafb;
    --color-border: #e5e7eb;
    --color-text-primary: #111827;
    --color-text-secondary: #374151;
    --color-text-tertiary: #6b7280;
    --color-text-on-dark: #ffffff;

    /* Spacing System */
    --space-xs: 0.75rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 3.5rem;

    /* Border Radius System */
    --radius-md: 0.5rem;

    font-family: 'Inter', sans-serif;
    font-weight: 400;
    color: var(--color-text-secondary);
    letter-spacing: 0.01em;

    max-width: 1280px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-md);
    position: relative;
    background-color: var(--color-background);
    overflow-x: hidden;
}

.ea3g-articles-container * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Typography Defaults */
.ea3g-articles-container h2,
.ea3g-articles-container h3 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text-primary);
}

.ea3g-articles-container p {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: var(--space-sm);
}

/* Hero / Intro Section */
.ea3g-intro-hero {
    margin-bottom: var(--space-xl);
    padding: var(--space-lg);
    background: linear-gradient(to right, var(--color-surface), var(--color-surface-alt));
    border-left: 5px solid var(--color-primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.04);
}

.ea3g-intro-hero h2 {
    font-size: 28px;
    margin-bottom: var(--space-sm);
    color: var(--color-primary);
}

.ea3g-intro-hero p {
    font-size: 17px;
    color: var(--color-text-secondary);
    max-width: 900px;
}

/* Articles Grid/List Section */
.ea3g-papers-section {
    position: relative;
}

.ea3g-section-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-lg);
    border-bottom: 2px solid var(--color-border);
    padding-bottom: var(--space-sm);
}

.ea3g-section-icon {
    width: 24px;
    height: 24px;
    margin-right: var(--space-sm);
    fill: var(--color-primary);
}

.ea3g-papers-list {
    display: grid;
    grid-template-columns: 1fr; /* Default List View */
    gap: var(--space-lg);
}

/* Individual Paper Item */
.ea3g-paper-item {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    position: relative;
}

.ea3g-paper-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
    border-color: var(--color-primary-light);
}

/* Paper Typography & Layout */
.ea3g-paper-title {
    font-family: 'Poppins', sans-serif;
    font-size: 18px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 8px;
    text-decoration: none;
    line-height: 1.4;
    display: block;
}

.ea3g-paper-title:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* Requested Layout: Authors BELOW title */
.ea3g-paper-authors {
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-primary); /* Darker than meta */
    margin-bottom: 6px;
    font-style: italic;
}

/* Requested Layout: Meta (Year/Vol) BELOW Authors */
.ea3g-paper-meta {
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    color: var(--color-text-tertiary);
    line-height: 1.5;
}

/* CTA Footer Section */
.ea3g-cta-footer {
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    background-color: var(--color-primary);
    color: var(--color-text-on-dark);
    border-radius: var(--radius-md);
    text-align: center;
}

.ea3g-cta-footer h3 {
    color: white;
    margin-bottom: var(--space-sm);
}

.ea3g-cta-footer p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-md);
}

.ea3g-cta-btn {
    display: inline-block;
    background-color: white;
    color: var(--color-primary);
    padding: 10px 24px;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s;
}

.ea3g-cta-btn:hover {
    transform: scale(1.05);
    color: var(--color-primary-dark);
}

/* Responsive */
@media (max-width: 768px) {
    .ea3g-articles-container { padding: var(--space-lg) var(--space-sm); }
    .ea3g-intro-hero { padding: var(--space-md); }
    .ea3g-paper-title { font-size: 16px; }
    .ea3g-paper-authors { font-size: 14px; }
}