/* Specific Styles for Insights Page */
.insights-header {
    padding: var(--spacing-lg) var(--spacing-md);
    border-bottom: var(--border-width) var(--border-style) var(--border-color);
}

/* Filter Bar */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-bottom: var(--border-width) var(--border-style) var(--border-color);
    background-color: var(--color-white);
    position: sticky;
    top: 73px; /* Just below nav (approx height) - adjust as needed */
    z-index: 90;
}

.filter-btn {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.875rem;
    padding: 8px 16px;
    border: 1px solid var(--color-ink);
    background-color: var(--color-bg);
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--color-ink);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 4px 4px 0 var(--color-accent-1);
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    padding: var(--spacing-md);
}

.article-card {
    border: 2px solid var(--color-ink);
    background-color: var(--color-white);
    display: flex;
    flex-direction: column;
    transition: transform 0.2s, box-shadow 0.2s, opacity 0.3s ease;
    cursor: pointer;
    height: 100%;
}

.article-card.hidden {
    display: none;
}

.article-card:hover {
    transform: translate(-4px, -4px);
    box-shadow: 8px 8px 0 var(--color-accent-1);
}

.article-thumb {
    height: 200px;
    border-bottom: 2px solid var(--color-ink);
    position: relative;
    overflow: hidden;
    /* Neo-Brutalist Patterns */
}

/* Pattern 1: Diagonal Stripes */
.pattern-1 {
    background: repeating-linear-gradient(
        45deg,
        var(--color-ink),
        var(--color-ink) 10px,
        var(--color-white) 10px,
        var(--color-white) 20px
    );
}

/* Pattern 2: Polka Dots */
.pattern-2 {
    background-color: var(--color-white);
    background-image: radial-gradient(var(--color-ink) 2px, transparent 2px);
    background-size: 20px 20px;
}

/* Pattern 3: Geometric Shapes */
.pattern-3 {
    background: linear-gradient(135deg, var(--color-accent-1) 25%, transparent 25%) -50px 0,
                linear-gradient(225deg, var(--color-accent-1) 25%, transparent 25%) -50px 0,
                linear-gradient(315deg, var(--color-accent-1) 25%, transparent 25%),
                linear-gradient(45deg, var(--color-accent-1) 25%, transparent 25%);
    background-size: 100px 100px;
    background-color: var(--color-ink);
}

/* Pattern 4: Checkerboard */
.pattern-4 {
    background-color: var(--color-white);
    background-image:
        linear-gradient(45deg, var(--color-ink) 25%, transparent 25%),
        linear-gradient(-45deg, var(--color-ink) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, var(--color-ink) 75%),
        linear-gradient(-45deg, transparent 75%, var(--color-ink) 75%);
    background-size: 40px 40px;
    background-position: 0 0, 0 20px, 20px -20px, -20px 0px;
}

/* Pattern 5: Zig Zag */
.pattern-5 {
    background-color: var(--color-white);
    background: linear-gradient(135deg, var(--color-accent-1) 25%, transparent 25%) -50px 0,
                linear-gradient(225deg, var(--color-accent-1) 25%, transparent 25%) -50px 0,
                linear-gradient(315deg, var(--color-accent-1) 25%, transparent 25%),
                linear-gradient(45deg, var(--color-accent-1) 25%, transparent 25%);
    background-size: 60px 60px;
    background-color: #E5E5E5;
}

/* Pattern 6: Grid */
.pattern-6 {
    background-color: var(--color-ink);
    background-image:
        linear-gradient(var(--color-white) 2px, transparent 2px),
        linear-gradient(90deg, var(--color-white) 2px, transparent 2px);
    background-size: 30px 30px;
}

/* Pattern 7: Concentric Circles (Simulated via radial gradient) */
.pattern-7 {
    background-color: var(--color-accent-1);
    background-image: repeating-radial-gradient(
        circle,
        var(--color-accent-1),
        var(--color-accent-1) 10px,
        var(--color-ink) 10px,
        var(--color-ink) 20px
    );
}

.article-content {
    padding: var(--spacing-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.article-meta {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: #666;
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
}

.article-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.article-excerpt {
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
}

.read-more {
    margin-top: auto;
    font-family: var(--font-mono);
    font-weight: 700;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    font-size: 1rem;
    color: var(--color-ink);
}

.read-more::after {
    content: '→';
    transition: transform 0.2s;
}

.article-card:hover .read-more::after {
    transform: translateX(5px);
}

@media (max-width: 900px) {
    .insights-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .insights-grid {
        grid-template-columns: 1fr;
    }

    .filter-bar {
        position: static; /* No sticky on mobile maybe? */
        overflow-x: auto; /* Scrollable if too many */
    }
}