:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --secondary: #10b981;
    --accent: #f59e0b;
    --light-gray: #f8fafc;
    --border-color: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --gradient-bg: linear-gradient(135deg,
            #667eea 0%,
            #764ba2 100%);
    --card-gradient: linear-gradient(135deg,
            #667eea 0%,
            #764ba2 100%);
}

body {
    background: #ffffff;
    min-height: 100vh;
    margin: 0;
    font-family:
        system-ui,
        -apple-system,
        sans-serif;
    color: var(--text-primary);
}

.header {
    display: flex;
    align-items: center;
    padding: 1rem 0;
    margin-bottom: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--primary);
    font-size: 1.1rem;
}

.controls {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
    border: 1px solid var(--border-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.tag-filter {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
    flex: 1;
}

.tag {
    background: white;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 0.3rem 0.6rem;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.8rem;
}

.tag:hover {
    background: var(--light-gray);
    color: var(--text-primary);
    border-color: var(--primary);
}

.tag.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
    justify-items: center;
}

.tool-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    width: 100%;
    max-width: 400px;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--primary);
}

.tool-image {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-bottom: 1px solid var(--border-color);
}

.tool-content {
    padding: 1.5rem;
}

.tool-name {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.tool-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.tool-link {
    display: inline-block;
    background: linear-gradient(135deg,
            var(--primary) 0%,
            #8b5cf6 100%);
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.tool-link:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
    color: white;
}

.tool-tags {
    margin-top: 1rem;
    display: flex;
    gap: 0.3rem;
    flex-wrap: wrap;
}

.tool-tag {
    background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
    color: var(--text-secondary);
    padding: 0.2rem 0.5rem;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.no-results {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .controls {
        flex-direction: column;
        align-items: stretch;
    }

    .tag-filter {
        justify-content: center;
    }
}