.plan-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

.plan-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

/* Compact Duration Selection Styling */
.duration-selector-compact {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 0.5rem;
}

.duration-option-input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.duration-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: #f8f9fa;
    border: 1.5px solid #e9ecef;
    border-radius: 20px;
    padding: 8px 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    min-height: 36px;
    position: relative;
}

.duration-pill:hover {
    border-color: var(--bs-primary);
    background: rgba(13, 110, 253, 0.05);
    transform: translateY(-1px);
}

.duration-option-input:checked + .duration-pill {
    background: var(--bs-primary);
    border-color: var(--bs-primary);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(13, 110, 253, 0.3);
}

.duration-option-input:focus + .duration-pill {
    outline: none;
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
}

.duration-text {
    font-weight: 600;
}

.pill-savings {
    background: rgba(220, 53, 69, 0.9);
    color: white;
    padding: 2px 6px;
    border-radius: 8px;
    font-size: 0.65rem;
    font-weight: 600;
    line-height: 1;
    position: absolute;
    top: -6px;
    right: -6px;
    z-index: 10;
    min-width: 28px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.15);
}

.duration-option-input:checked + .duration-pill .pill-savings {
    background: rgba(220, 53, 69, 1);
    color: white;
    box-shadow: 0 2px 6px rgba(0,0,0,0.25);
}

/* Price Display Animation */
.plan-price {
    transition: all 0.3s ease;
}

.plan-card .display-4 {
    transition: transform 0.2s ease;
}


.savings-container {
    transition: opacity 0.3s ease, max-height 0.3s ease;
    overflow: hidden;
}

.monthly-equivalent-container {
    transition: opacity 0.3s ease, max-height 0.3s ease;
    overflow: hidden;
}

/* Button Pulse Animation */
@keyframes btn-pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

.btn-pulse {
    animation: btn-pulse 0.3s ease-in-out;
}

/* Plan Description Animation */
.plan-description {
    transition: opacity 0.3s ease, transform 0.2s ease;
    min-height: 1.5rem;
}

.plan-description.updating {
    opacity: 0.7;
    transform: translateY(-2px);
}

/* Plan Card Focus State */
.plan-card:focus-within {
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
    outline: none;
}

/* Duration Selection Focus */
.btn-check:focus + .btn {
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
    outline: none;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .duration-selector-compact {
        gap: 6px;
    }
    
    .duration-pill {
        padding: 6px 12px;
        font-size: 0.8rem;
        min-height: 32px;
    }

    .pill-savings {
        font-size: 0.6rem;
        padding: 1px 4px;
        top: -5px;
        right: -5px;
        min-width: 24px;
    }
    
    .plan-card:hover {
        transform: none;
    }
    
    .duration-pill:hover {
        transform: none;
    }
    
    .duration-option-input:checked + .duration-pill {
        transform: none;
    }
}

@media (max-width: 576px) {
    .duration-selector-compact {
        gap: 4px;
    }
    
    .duration-pill {
        padding: 5px 10px;
        font-size: 0.75rem;
        min-height: 30px;
    }
    
    .pill-savings {
        font-size: 0.55rem;
        top: -4px;
        right: -4px;
        min-width: 22px;
    }
}

/* Animation for duration selection changes */
@keyframes pill-select {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.duration-pill.selected-animation {
    animation: pill-select 0.2s ease-out;
}

/* Enhanced focus states for accessibility */
.duration-option-input:focus-visible + .duration-pill {
    outline: 2px solid var(--bs-primary);
    outline-offset: 2px;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .duration-pill {
        background: #2d3748;
        border-color: #4a5568;
        color: #e2e8f0;
    }
    
    .duration-pill:hover {
        border-color: var(--bs-primary);
        background: #374151;
    }
    
    .pill-savings {
        background: rgba(220, 53, 69, 0.9);
        color: white;
    }
}

/* Loading State */
.plan-card.updating {
    opacity: 0.8;
    pointer-events: none;
}

.plan-card.updating .plan-price {
    opacity: 0.5;
}