body {
    background: linear-gradient(135deg, #1c1c3a 0%, #2d2d5a 100%);
    min-height: 100vh;
    padding: 20px 0;
}

.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.header-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.info-label {
    font-size: 12px;
    font-weight: 600;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 5px;
}

.info-value {
    font-size: 16px;
    color: #1c1c3a;
    font-weight: 500;
}

.upgrade-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    height: 100%;
}

.card-icon {
    font-size: 24px;
}

.price-display {
    background: #f5f5f5;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
}

.price-label {
    font-size: 12px;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 5px;
}

.price-amount {
    font-size: 32px;
    font-weight: 700;
    color: #1c1c3a;
}

.validity-notice {
    background: #e3f2fd;
    border-left: 4px solid #2196f3;
    padding: 12px 15px;
    border-radius: 8px;
    font-size: 14px;
    color: #0d47a1;
}

.payment-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    max-width: 800px;
    margin: 0 auto;
}

#card-element {
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 15px;
    background: white;
}

#card-errors {
    color: #dc3545;
    font-size: 14px;
    margin-top: 10px;
    min-height: 20px;
}

.btn-primary-custom {
    background: #1c1c3a;
    border-color: #1c1c3a;
}

.btn-primary-custom:hover {
    background: #2d2d5a;
    border-color: #2d2d5a;
}

.btn-success-custom {
    color: #fff;
    background: #28a745;
    border-color: #28a745;
}

.btn-success-custom:hover:not(:disabled) {
    color: azure;
    background: #218838;
    border-color: #218838;
}

.powered-by-stripe {
    text-align: center;
    font-size: 12px;
    color: #666;
}

.powered-by-stripe strong {
    color: #635bff;
}

.deadline-notice {
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    padding: 15px;
    border-radius: 8px;
    font-size: 14px;
    color: #856404;
}

.price-breakdown {
    font-size: 14px;
    color: #666;
    margin-top: 5px;
}

.upgrade-card {
    position: relative;
}

/* Hidden by default */
.upgrade-card::after {
    content: "Offer expired";
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.65);
    color: #fff;
    font-size: 26px;
    font-weight: bold;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 12px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

/* Visible when expired */
.upgrade-card.expired::after {
    opacity: 1;
    pointer-events: all;
}