/* --- Tool Panels Improvements --- */
.panel-header {
    text-align: center;
    margin-bottom: 2rem;
    animation: fadeIn 0.5s ease-out;
}

.panel-header h3 {
    font-size: 1.8rem;
    margin-bottom: 0.75rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
}

.tool-desc {
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.6;
}

.search-panel {
    display: none;
    animation: fadeIn 0.3s ease-out;
}

.search-panel.active {
    display: block;
}

/* --- New Tool Selection Buttons --- */
.tool-card-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

.tool-card-btn:hover {
    border-color: var(--accent-primary);
    background: rgba(57, 255, 20, 0.05);
    transform: translateY(-2px);
    color: var(--text-primary);
    box-shadow: 0 0 15px rgba(57, 255, 20, 0.2);
}

.tool-card-btn.active {
    border-color: var(--accent-primary);
    background: rgba(57, 255, 20, 0.1);
    color: var(--text-primary);
    box-shadow: 0 0 20px rgba(57, 255, 20, 0.3);
}

.tool-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.tool-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.tool-sub {
    font-size: 0.8rem;
    opacity: 0.7;
}