.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}

.tool-card {
    position: relative;
    background-color: var(--bg-surface);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--border-light);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow: hidden;
    text-decoration: none;
}

.tool-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background-color: var(--bg-input);
    border: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 22px;
    transition: var(--transition-fast);
}

.tool-card:hover .card-icon {
    background-color: var(--accent-light);
    border-color: rgba(59, 130, 246, 0.3);
}

.card-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.card-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.card-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Efecto de borde brillante animado (Raycast / Linear style) */
.tool-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6, #ec4899, #3b82f6);
    background-size: 300% 300%;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.3s ease;
    animation: borderGlow 6s linear infinite;
    pointer-events: none;
}

.tool-card:hover::before {
    opacity: 0.8;
}

@keyframes borderGlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}