:root {
    --card-hover-scale: 1.02;
    --pico-primary: #0066cc;
    --pico-primary-hover: #0052a3;
    --pico-primary-focus: rgba(0, 102, 204, 0.25);
}

body {
    background: linear-gradient(135deg, var(--pico-background-color) 0%, var(--pico-card-background-color) 100%);
    min-height: 100vh;
}

.hero {
    text-align: center;
    padding: 2rem 1rem 3rem;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--pico-primary) 0%, var(--pico-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.1rem;
    color: var(--pico-muted-color);
    margin-bottom: 0;
}

.container {
    max-width: 1200px;
    padding: 0 1rem;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.fit-card {
    background: var(--pico-card-background-color);
    border: 1px solid var(--pico-muted-border-color);
    border-radius: 0;
    padding: 2rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    cursor: pointer;
    display: block;
    position: relative;
    overflow: hidden;
}

.fit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--pico-primary), var(--pico-secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.fit-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    border-color: var(--pico-primary);
}

.fit-card:hover::before {
    transform: scaleX(1);
}

.fit-card-icon {
    width: 100%;
    height: 120px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.fit-card-icon svg {
    width: 100%;
    height: 100%;
}

.fit-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--pico-contrast);
}

.fit-card p {
    font-size: 0.9rem;
    color: var(--pico-muted-color);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.fit-card-equation {
    background: var(--pico-background-color);
    padding: 0.75rem;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    margin-top: 1rem;
    color: var(--pico-primary);
    text-align: center;
}

.badge {
    display: inline-block;
    background: var(--pico-primary);
    color: white;
    font-size: 0.7rem;
    padding: 0.25rem 0.6rem;
    border-radius: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-left: 0.5rem;
}

.badge-coming-soon {
    background: var(--pico-muted-color);
    opacity: 0.6;
}

.fit-card.disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.fit-card.disabled:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--pico-muted-border-color);
}

footer {
    text-align: center;
    padding: 3rem 1rem 2rem;
    color: var(--pico-muted-color);
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 1.8rem;
    }

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