:root {
    --bg-color: #f8fafc;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --card-bg: #ffffff;
    
    /* Pastel Billing Colors (Green/Teacherish) */
    --billing-primary: #10b981; 
    --billing-light: #d1fae5;
    --billing-gradient: linear-gradient(135deg, #d1fae5 0%, #ecfdf5 100%);

    /* Pastel Frames Colors (Blue/Indigo) */
    --frames-primary: #6366f1;
    --frames-light: #e0e7ff;
    --frames-gradient: linear-gradient(135deg, #e0e7ff 0%, #eef2ff 100%);

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --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-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.main-container {
    width: 100%;
    max-width: 1000px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3rem;
}

.header {
    text-align: center;
    animation: fadeInDown 0.8s ease-out;
}

.brand-title {
    font-size: 3rem;
    font-weight: 600;
    letter-spacing: -0.05em;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.brand-dot {
    color: var(--billing-primary); /* Use one of the accent colors */
}

.brand-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    font-weight: 300;
}

.cards-container {
    display: flex;
    gap: 2rem;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
}

.card {
    background: var(--card-bg);
    border-radius: 1.5rem;
    padding: 2.5rem;
    text-decoration: none;
    color: inherit;
    flex: 1;
    min-width: 300px;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.8s ease-out backwards;
}

.card:nth-child(2) {
    animation-delay: 0.2s;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

/* Specific Card Styling */
.billing-card:hover {
    border-color: var(--billing-primary);
}

.frames-card:hover {
    border-color: var(--frames-primary);
}

.billing-card .icon-wrapper {
    background: var(--billing-light);
    color: var(--billing-primary);
}

.frames-card .icon-wrapper {
    background: var(--frames-light);
    color: var(--frames-primary);
}

.icon-wrapper {
    width: 64px;
    height: 64px;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.card:hover .icon-wrapper {
    transform: scale(1.1);
}

.card h2 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.description {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 1rem;
}

.card-action {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    font-size: 0.95rem;
    margin-top: auto;
    opacity: 0.8;
    transition: var(--transition);
}

.billing-card .card-action { color: var(--billing-primary); }
.frames-card .card-action { color: var(--frames-primary); }

.card:hover .card-action {
    opacity: 1;
    gap: 1rem; /* Arrow moves slightly */
}

.footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 1rem;
    opacity: 0.6;
    animation: fadeIn 1s ease-out 0.5s backwards;
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .cards-container {
        flex-direction: column;
        align-items: center;
    }
    
    .card {
        width: 100%;
        max-width: 100%;
    }
    
    .brand-title {
        font-size: 2.5rem;
    }
}