/* === Category filters === */
.category-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: rgba(255,255,255,0.04);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.filter-pill {
    padding: 0.5rem 1rem;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 50px;
    background: rgba(255,255,255,0.04);
    color: rgba(255,255,255,0.55);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.filter-pill:hover {
    border-color: rgba(99,102,241,0.4);
    color: rgba(255,255,255,0.85);
    background: rgba(99,102,241,0.1);
}

.filter-pill.active {
    background: linear-gradient(135deg, var(--accent-teal), var(--accent-indigo));
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 15px rgba(99,102,241,0.3);
}

/* === Tools grid === */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
}

/* === Tool tile === */
.tool-tile {
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    padding: 1.5rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    border-top: none;
    position: relative;
    overflow: hidden;
}

/* Gradient top-border effect via pseudo-element */
.tool-tile::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-teal), var(--accent-indigo), var(--accent-rose));
    opacity: 0.5;
    transition: opacity 0.35s ease;
}

.tool-tile:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.25);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3), 0 0 30px rgba(99,102,241,0.08);
}

.tool-tile:hover::before {
    opacity: 1;
}

.tool-tile-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.tool-tile-icon {
    font-size: 1.75rem;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 12px;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.tool-tile:hover .tool-tile-icon {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.15);
}

.tool-tile-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
}

.tool-tile-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.tool-tile-category {
    display: inline-block;
    padding: 0.25rem 0.7rem;
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 600;
    color: white;
    background: var(--tile-color, #64748b);
    align-self: flex-start;
    margin-top: auto;
    opacity: 0.85;
    letter-spacing: 0.02em;
}

/* === No results === */
.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
}