:root {
    --primary: #6366f1;
    --primary-glow: rgba(99, 102, 241, 0.5);
    --bg-dark: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Outfit', sans-serif;
    background: radial-gradient(circle at top center, #1e293b 0%, #0f172a 100%);
    background-attachment: fixed;
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* Subtile Overlay for depth */
.bg-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.02;
    pointer-events: none;
    z-index: -1;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    padding: 6rem 1rem 4rem;
}

h1 {
    font-size: 4rem;
    font-weight: 800;
    letter-spacing: -2px;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Grid System */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem 0;
}

/* Card Design */
.tool-card {
    text-decoration: none;
    color: inherit;
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2.5rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transform: translateX(-100%);
    transition: 0.6s;
}

.tool-card:hover::before {
    transform: translateX(100%);
}

.tool-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.5), 0 0 20px var(--primary-glow);
}

.tool-icon {
    width: 56px;
    height: 56px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--primary);
    transition: var(--transition);
}

.tool-card:hover .tool-icon {
    background: var(--primary);
    color: white;
    transform: scale(1.1) rotate(-5deg);
}

h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

p {
    color: var(--text-muted);
    font-size: 1rem;
}

/* Add Tool Button (Placeholder UI) */
.add-tool-ui {
    border: 2px dashed var(--glass-border);
    background: transparent;
    cursor: pointer;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.add-tool-ui:hover {
    border-color: var(--text-muted);
    background: rgba(255, 255, 255, 0.02);
    box-shadow: none;
    transform: none;
}

/* Responsive Footer */
footer {
    text-align: center;
    padding: 4rem 1rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    border-top: 1px solid var(--glass-border);
    margin-top: 4rem;
}

/* Mobile Adjustments */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }
}