/* ===== Enhanced Purchase Modal Styles v2.0 ===== */
/* Adds support for loading states, error handling, email forms, and accessibility */

/* Screen reader only content */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Modal Steps */
.modal-step {
    display: none;
    animation: fadeIn 0.3s ease-out;
}

.modal-step.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Product Price Box */
.product-price-box {
    text-align: center;
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(99, 102, 241, 0.1) 100%);
    border: 2px solid rgba(139, 92, 246, 0.3);
    border-radius: 16px;
    margin-bottom: 1.5rem;
}

.price-label {
    display: block;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.price-amount {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1;
    background: linear-gradient(135deg, #8b5cf6, #6366f1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Email Collection Form */
.email-collection-form,
.payment-method-selection {
    padding: 1rem 0;
}

.email-collection-form h3,
.payment-method-selection h3 {
    font-size: 1.5rem;
    color: #ffffff;
    margin-bottom: 0.5rem;
    text-align: center;
}

.email-collection-form p,
.payment-method-selection p {
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input[type="email"],
.form-group input[type="text"] {
    width: 100%;
    padding: 1rem 1.25rem;
    background: rgba(0, 0, 0, 0.3);
    border: 2px solid rgba(139, 92, 246, 0.3);
    border-radius: 12px;
    color: #ffffff;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #8b5cf6;
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.form-group input[aria-invalid="true"] {
    border-color: #ef4444;
}

.field-error {
    display: none;
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.8);
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    margin-right: 0.5rem;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.form-actions .btn {
    flex: 1;
}

/* Payment Methods Grid */
.payment-methods-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.payment-method-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(139, 92, 246, 0.2);
    border-radius: 16px;
    color: #ffffff;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 120px;
}

.payment-method-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(139, 92, 246, 0.5);
    transform: translateY(-2px);
}

.payment-method-card:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.3);
}

.payment-method-card i {
    font-size: 2.5rem;
    color: #8b5cf6;
}

.payment-method-card i.fa-paypal {
    color: #0070ba;
}

.payment-method-card span {
    font-size: 1.125rem;
    font-weight: 600;
}

.payment-method-card small {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.payment-method-card.selected {
    background: rgba(139, 92, 246, 0.2);
    border-color: #8b5cf6;
}

/* Processing State */
.processing-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1rem;
    text-align: center;
}

.spinner-large {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(139, 92, 246, 0.2);
    border-top-color: #8b5cf6;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 1.5rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.processing-state h3 {
    font-size: 1.5rem;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.processing-state p {
    color: rgba(255, 255, 255, 0.7);
}

/* Error Container */
.error-container {
    padding: 2rem;
    background: rgba(239, 68, 68, 0.1);
    border: 2px solid rgba(239, 68, 68, 0.3);
    border-radius: 16px;
    text-align: center;
    animation: errorShake 0.4s ease-out;
}

@keyframes errorShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.error-container i {
    font-size: 3rem;
    color: #ef4444;
    margin-bottom: 1rem;
}

.error-container h3 {
    font-size: 1.5rem;
    color: #ffffff;
    margin-bottom: 0.75rem;
}

.error-container p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.error-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Button Loading State */
.btn.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.8;
}

.btn-spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-right: 0.5rem;
}

/* PayPal Checkout Container */
.paypal-checkout-container {
    padding: 2rem;
    text-align: center;
}

.paypal-checkout-container h3 {
    font-size: 1.5rem;
    color: #ffffff;
    margin-bottom: 1.5rem;
}

#paypal-buttons-container {
    margin-bottom: 1rem;
}

/* Purchase Notification */
.purchase-notification {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    background: rgba(30, 30, 45, 0.98);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 12px;
    color: #ffffff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    z-index: 10000;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s ease;
}

.purchase-notification.show {
    opacity: 1;
    transform: translateX(0);
}

.purchase-notification.error {
    border-color: rgba(239, 68, 68, 0.5);
    background: rgba(239, 68, 68, 0.1);
}

.purchase-notification.success {
    border-color: rgba(16, 185, 129, 0.5);
    background: rgba(16, 185, 129, 0.1);
}

/* Security Badges */
.security-badges {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.badge-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.badge-item i {
    color: #10b981;
    font-size: 1rem;
}

/* Button Block */
.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .price-amount {
        font-size: 2.5rem;
    }

    .payment-methods-grid {
        grid-template-columns: 1fr;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }

    .error-actions {
        flex-direction: column;
    }

    .error-actions .btn {
        width: 100%;
    }

    .security-badges {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }

    .purchase-notification {
        right: 1rem;
        left: 1rem;
        bottom: 1rem;
    }
}

/* Focus Visible Styles (Accessibility) */
.btn:focus-visible,
.payment-method-card:focus-visible,
input:focus-visible {
    outline: 3px solid #8b5cf6;
    outline-offset: 2px;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .modal-step,
    .btn-spinner,
    .spinner-large,
    .error-container,
    .purchase-notification {
        animation: none !important;
        transition: none !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .product-price-box,
    .payment-method-card,
    .error-container {
        border-width: 3px;
    }

    input:focus,
    .btn:focus {
        outline: 3px solid;
        outline-offset: 3px;
    }
}