/* =============================================================================
   KNOWLEDGE BASE LISTING PAGE (Tudástár főoldal)
   ============================================================================= */

/* Header */
.kb-header {
    background: linear-gradient(135deg, var(--bg-blue-light) 0%, #d0e8f2 100%);
    padding: 120px 0 60px;
    text-align: center;
}

.kb-header h1 {
    font-size: 2.5rem;
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.kb-header-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 550px;
    margin: 0 auto;
}

/* Card Grid */
.kb-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

/* Card */
.kb-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    text-decoration: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.kb-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.kb-card-body {
    flex: 1;
}

.kb-card-date {
    display: inline-block;
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 0.75rem;
}

.kb-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.kb-card-excerpt {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin: 0;
}

.kb-card-link {
    display: inline-block;
    margin-top: 1.25rem;
    font-weight: 600;
    color: var(--primary);
    font-size: 0.95rem;
    transition: gap 0.2s ease;
}

.kb-card:hover .kb-card-link {
    color: var(--primary-dark);
}

/* Tablet – 2 columns */
@media (min-width: 768px) {
    .kb-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop – 3 columns */
@media (min-width: 1024px) {
    .kb-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Mobile */
@media (max-width: 640px) {
    .kb-header {
        padding: 100px 0 40px;
    }

    .kb-header h1 {
        font-size: 1.8rem;
    }

    .kb-card {
        padding: 1.25rem;
    }
}