:root {
    --gradient-start: #8B5CF6;
    --gradient-middle: #3B82F6;
    --gradient-end: #EC4899;
}

body {
    font-family: 'Rubik', system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-middle), var(--gradient-end));
    min-height: 100vh;
    margin: 0;
    padding: 1rem;
}

.glass-bg {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 2rem;
    padding: 2rem;
    min-height: calc(100vh - 2rem);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

header {
    margin-bottom: 3rem;
}

header h1 {
    font-size: 3.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-middle), var(--gradient-end));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 0.5rem;
}

header .lead {
    font-size: 1.5rem;
    color: #4B5563;
    font-weight: 300;
}

.search-container {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 1rem;
    padding: 0.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

#searchInput, #categoryFilter {
    border: none;
    background: transparent;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    font-size: 1rem;
    color: #1F2937;
    width: 100%;
}

#searchInput:focus, #categoryFilter:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--gradient-middle);
}

.tool-card {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 1.5rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s, box-shadow 0.2s;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.tool-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.1);
}

.tool-card h3 {
    color: #1F2937;
    margin-bottom: 1rem;
    font-weight: 500;
    font-size: 1.25rem;
}

.tool-card .category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(139, 92, 246, 0.1);
    color: var(--gradient-start);
    border-radius: 2rem;
    font-size: 0.875rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.tool-card .description {
    color: #4B5563;
    margin-bottom: 1.5rem;
    flex-grow: 1;
    line-height: 1.5;
}

.tool-card .btn {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-middle));
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 1rem;
    color: white;
    font-weight: 500;
    transition: opacity 0.2s;
}

.tool-card .btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}