:root {
    /* ========================================
       COLORS
       ======================================== */
    
    /* Brand Colors */
    --bss-color-primary: #2271b1;
    --bss-color-link: #2271b1;
    --bss-color-link-hover: #135e96;
    
    /* Text Colors */
    --bss-color-text-primary: #333;
    --bss-color-text-secondary: #666;
    --bss-color-text-dark: #000;
    
    /* Background Colors */
    --bss-color-modal-bg: #fff;
    --bss-color-modal-header-bg: #fff;
    --bss-color-modal-footer-bg: #fff;
    --bss-color-current-plan-bg: #f8f9fa;
    --bss-color-current-plan-button-bg: #fff;
    --bss-color-selected-plan-bg: #f0f7ff;
    --bss-color-hover-bg: #e9ecef;
    --bss-color-overlay: rgba(0, 0, 0, 0.5);
    
    /* Button Colors */
    --bss-color-button-bg: #212121;
    --bss-color-button-text: #fff;
    --bss-color-button-bg-hover: #333;
    --bss-color-button-primary-bg: #2271b1;
    --bss-color-button-primary-bg-hover: #135e96;

    /* Border Colors */
    --bss-color-border: #ddd;
    --bss-color-border-light: #e2e4e7;
    --bss-color-muted: #ccc;
    
    /* Star Rating Colors */
    --bss-star-rating-color: #fcc30b;
    --bss-star-rating-color-empty: #ccc;
    
    /* Legacy Modal Colors (for backward compatibility) */
    --bss-color-modal-text: #333;
    --bss-color-modal-header-text: #333;
    --bss-color-modal-footer-text: #333;
    
    /* ========================================
       SPACING & SIZING
       ======================================== */
    
    /* Spacing Scale */
    --bss-spacing-xs: 5px;
    --bss-spacing-sm: 8px;
    --bss-spacing-md: 10px;
    --bss-spacing-lg: 15px;
    --bss-spacing-xl: 20px;
    --bss-spacing-xxl: 30px;
    
    /* Image Sizes */
    --bss-image-size-sm: 60px;
    --bss-image-size-md: 80px;
    
    /* Modal Dimensions */
    --bss-modal-width: 675px;

    /* Button Sizes */
    --bss-button-min-width: 140px;
    
    /* ========================================
       TYPOGRAPHY
       ======================================== */
    
    /* Font Sizes */
    --bss-font-size-sm: 0.8em;
    --bss-font-size-md: 0.9em;
    --bss-font-size-lg: 1.2em;
    
    /* ========================================
       EFFECTS & ANIMATIONS
       ======================================== */
    
    /* Border Radius */
    --bss-border-radius: 6px;
    --bss-button-border-radius: 6px;
    
    /* Transitions */
    --bss-transition-fast: 0.2s;
    --bss-transition-normal: 0.3s ease-in-out;
    
    /* Opacity */
    --bss-opacity-hover: 0.8;
    
    /* Shadows */
    --bss-shadow-modal: 0 4px 20px rgba(0, 0, 0, 0.15);
    
    /* Z-Index */
    --bss-z-index-modal: 99999;
}

/* ========================================
   GLOBAL COMPONENTS
   ======================================== */

/* Button Component */
.bss-btn {
    background-color: var(--bss-color-button-bg);
    color: var(--bss-color-button-text);
    border-radius: var(--bss-button-border-radius);
    padding: var(--bss-spacing-md) 16px;
    font-weight: 500;
    transition: all var(--bss-transition-fast);
    cursor: pointer;
    min-width: var(--bss-button-min-width);
    font-size: 0.85em;
}

.bss-btn:hover {
    background-color: var(--bss-color-button-bg-hover);
}

/* Star Rating Component */
.bss-modal .star-rating {
    overflow: hidden;
    position: relative;
    height: 1em;
    line-height: 1;
    font-size: var(--bss-font-size-md);
    width: 5.4em;
    font-family: "WooCommerce", "FontAwesome";
    letter-spacing: normal;
}

.bss-modal .star-rating::before {
    content: "\e021\e021\e021\e021\e021";
    color: var(--bss-star-rating-color-empty);
    float: left;
    top: 0;
    left: 0;
    position: absolute;
}

.bss-modal .star-rating span {
    overflow: hidden;
    float: left;
    top: 0;
    left: 0;
    position: absolute;
    padding-top: 1.5em;
}

.bss-modal .star-rating span::before {
    content: "\e020\e020\e020\e020\e020";
    color: var(--bss-star-rating-color);
    top: 0;
    position: absolute;
    left: 0;
}

/* ========================================
   MODAL STRUCTURE
   ======================================== */

/* Modal Base */
.bss-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 999999;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.bss-modal.show {
    opacity: 1;
}

.bss-modal button {
    border-radius: var(--bss-button-border-radius);
    font-size: var(--bss-font-size-md);
}

/* Modal Overlay */
.bss-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bss-color-overlay);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity var(--bss-transition-normal);
}

.bss-modal.show .bss-modal-overlay {
    opacity: 1;
}

/* Modal Content */
.bss-modal-content {
    position: relative;
    background: var(--bss-color-modal-bg);
    width: 90%;
    max-width: var(--bss-modal-width);
    margin: 50px auto;
    border-radius: var(--bss-border-radius);
    box-shadow: var(--bss-shadow-modal);
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    opacity: 0;
    transform: translateY(-var(--bss-spacing-xl));
    transition: opacity var(--bss-transition-normal), transform var(--bss-transition-normal);
}

.bss-modal.show .bss-modal-content {
    opacity: 1;
    transform: translateY(0);
}

/* Modal Header */
.bss-modal-header {
    padding: var(--bss-spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
    border-bottom: 1px solid var(--bss-color-border);
}

.bss-modal-header h2 {
    margin: 0;
    font-size: 1em;
    font-weight: bold;
    color: var(--bss-color-text-primary);
}

.bss-modal-close {
    position: absolute;
    top: 10px;
    right: var(--bss-spacing-lg);
    background: none;
    background-color: transparent !important;
    border: none;
    font-size: 1.5em !important;
    cursor: pointer;
    color: var(--bss-color-text-secondary) !important;
    padding: var(--bss-spacing-xs);
    line-height: 1;
    transition: color var(--bss-transition-fast);
    width: auto !important;
}

.bss-modal-close:hover {
    color: var(--bss-color-text-dark) !important;
    background-color: transparent !important;
}

/* Modal Body */
.bss-modal-body {
    padding: var(--bss-spacing-xl);
    overflow-y: auto;
    flex: 1;
}

/* Modal Footer */
.bss-modal-footer {
    padding: var(--bss-spacing-lg) var(--bss-spacing-xl);
    text-align: right;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    flex-shrink: 0;
    border-top: 1px solid var(--bss-color-border);
}

/* ========================================
   PLAN SELECTION COMPONENTS
   ======================================== */
.bss-available-plans-section.bss-plans-horizontal {
    overflow-x: auto;
}

.bss-available-plans {
    display: flex;
    flex-direction: column;
    gap: var(--bss-spacing-sm);
}

.bss-available-plans-section.bss-plans-horizontal .bss-available-plans {
    flex-direction: row;
}

/* Plan Titles */
.bss-current-plan-title,
.bss-new-plan-title {
    font-size: 1em;
    font-weight: bold;
    margin-top: var(--bss-spacing-xl);
    margin-bottom: var(--bss-spacing-lg);
}

.bss-current-plan-title {
    margin-top: 0;
}

/* Plan Options */
.bss-plan-option {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    border: 1px solid transparent;
    border-radius: var(--bss-border-radius);
    transition: all var(--bss-transition-fast);
}

.bss-available-plans-section.bss-plans-horizontal .bss-plan-option {
    flex-direction: column;
    padding: 15px 12px;
    margin-bottom: var(--bss-spacing-sm);
    min-width: 201px;
}

.bss-plan-option.bss-current-plan {
    background: var(--bss-color-current-plan-bg);
    border-color: var(--bss-color-border);
}

.bss-plan-option.selected {
    background: var(--bss-color-selected-plan-bg);
    border: 1px solid var(--bss-color-primary);
}

.bss-plan-option.bss-recommended-plan {
    background: var(--bss-color-selected-plan-bg);
    border: 1px solid var(--bss-color-primary);
    position: relative;
}

.bss-plan-option.bss-recommended-plan:before {
    content: attr(data-recommended-text);
    position: absolute;
    top: -9px;
    text-transform: uppercase;
    color: var(--bss-color-button-text);
    font-weight: bold;
    font-size: 11px;
    background-color: var(--bss-color-button-primary-bg);
    padding: 1px 8px;
    border-radius: 100px;
}

/* Plan Info */
.bss-plan-info {
    display: flex;
    align-items: center;
    gap: var(--bss-spacing-xl);
    flex: 1;
}

.bss-available-plans-section.bss-plans-horizontal .bss-plan-info {
    flex-direction: column;
    gap: var(--bss-spacing-md);
}

.bss-plan-image {
    width: var(--bss-image-size-md);
    height: var(--bss-image-size-md);
    flex-shrink: 0;
}

.bss-plan-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--bss-border-radius);
}

.bss-plan-details {
    flex: 1;
}

.bss-available-plans-section.bss-plans-horizontal .bss-plan-details {
    text-align: center;
    margin-bottom: var(--bss-spacing-md);
}

.bss-plan-price {
    display: block;
    color: var(--bss-color-text-secondary);
    font-size: var(--bss-font-size-md);
}

.bss-plan-renewal {
    font-size: var(--bss-font-size-md);
}

/* Plan Buttons */
.bss-plan-option .bss-btn {
    background: var(--bss-color-button-bg);
    margin-left: var(--bss-spacing-lg);
    padding: var(--bss-spacing-md) 16px;
    border-radius: var(--bss-button-border-radius);
    font-weight: 500;
    transition: all var(--bss-transition-fast);
    cursor: pointer;
    min-width: var(--bss-button-min-width);
    font-size: 0.85em;
    border: none;
}

.bss-available-plans-section.bss-plans-horizontal .bss-plan-option .bss-btn {
    margin-left: 0;
    width: 100%;
}

.bss-plan-option.selected .bss-btn,
.bss-product-details-view .bss-select-plan.selected {
    background: var(--bss-color-button-primary-bg);
    color: var(--bss-color-button-text);
    border: none;
    font-weight: bold;
}

.bss-plan-option.selected button:hover,
.bss-product-details-view .bss-select-plan.selected:hover {
    background: var(--bss-color-button-primary-bg-hover);
}

.bss-plan-option .bss-btn[disabled] {
    background: var(--bss-color-current-plan-button-bg);
    color: var(--bss-color-text-secondary);
    border: 1px solid var(--bss-color-border);
    cursor: default;
}

/* Plan Links */
a.bss-learn-more {
    display: block;
    margin-top: var(--bss-spacing-sm);
    color: var(--bss-color-link);
    text-decoration: none;
    font-size: var(--bss-font-size-md);
}

a.bss-learn-more:hover {
    text-decoration: underline;
}

.bss-plan-name,
a.bss-plan-name {
    display: block;
    font-weight: bold;
    color: var(--bss-color-text-dark);
    margin-top: 0;
    margin-bottom: var(--bss-spacing-xs);
    font-size: var(--bss-font-size-md);
    text-transform: capitalize;
}

/* ========================================
   PRICING COMPONENTS
   ======================================== */

/* Pricing Summary */
.bss-pricing-summary {
    margin-top: var(--bss-spacing-xxl);
    padding: var(--bss-spacing-lg);
    background: var(--bss-color-current-plan-bg);
    border-radius: var(--bss-border-radius);
    border: 1px solid var(--bss-color-border);
    font-size: var(--bss-font-size-md);
}

.bss-pricing-summary h3 {
    margin: 0 0 var(--bss-spacing-md) 0;
    font-size: 1em;
    color: var(--bss-color-text-primary);
    font-weight: bold;
}

.bss-selected-plan-name {
    font-size: 0.95em;
    color: var(--bss-color-text-primary);
    font-weight: 500;
}

/* Pricing Details */
.bss-pricing-details {
    margin-top: 0;
    padding: 0;
    background: none;
}

.bss-pricing-details .bss-next-payment,
.bss-pricing-details .bss-immediate-payment {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--bss-spacing-md);
    padding: var(--bss-spacing-sm) 0;
    border-bottom: 1px solid var(--bss-color-border-light);
}

.bss-pricing-details .bss-next-payment:last-child,
.bss-pricing-details .bss-immediate-payment:last-child {
    margin-bottom: 0;
    border-bottom: none;
}

.bss-pricing-details .label {
    color: var(--bss-color-text-dark);
}

.bss-pricing-details .amount {
    font-weight: 600;
    color: var(--bss-color-text-primary);
    text-align: right;
}

.bss-pricing-details .date {
    font-weight: bold;
}

.bss-pricing-details .schedule {
    color: var(--bss-color-text-primary);
    font-weight: 500;
}

.bss-pricing-details .bss-future-payments {
    border-bottom: 1px solid var(--bss-color-border);
    padding-bottom: 7px;
    margin-bottom: var(--bss-spacing-xs);
}

.bss-immediate-payment,
.bss-immediate-payment .amount {
    font-weight: bold;
    color: var(--bss-color-text-dark);
}

/* Continue Button */
.bss-continue-btn {
    display: flex;
    align-items: center;
    gap: var(--bss-spacing-md);
    background: var(--bss-color-primary);
    color: var(--bss-color-button-text);
    border: none;
    padding: 11px 16px;
    border-radius: var(--bss-border-radius);
    font-weight: bold;
    margin-left: var(--bss-spacing-md);
    transition: all var(--bss-transition-fast);
    cursor: pointer;
}

.bss-continue-btn:hover {
    background: var(--bss-color-link-hover);
    color: var(--bss-color-button-text);
}

.bss-continue-btn .bss-total-amount {
    font-weight: 600;
    margin-left: var(--bss-spacing-xs);
    border-radius: var(--bss-border-radius);
}

/* ========================================
   PRODUCT DETAILS COMPONENTS
   ======================================== */

/* Product Details View */
.bss-product-details-view {
    width: 100%;
}

.bss-product-details-view button {
    width: 100%;
}

.bss-product-details-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--bss-spacing-xxl);
}

/* Product Gallery */
.bss-product-gallery {
    width: 100%;
}

.bss-product-gallery .woocommerce-product-gallery {
    position: relative;
}

.bss-product-gallery .woocommerce-product-gallery__wrapper {
    margin: 0;
    padding: 0;
}

.bss-product-gallery .woocommerce-product-gallery__image {
    display: block;
    margin-bottom: 1em;
}

.bss-product-gallery .woocommerce-product-gallery__image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--bss-border-radius);
}

.bss-product-gallery .woocommerce-product-gallery__image a {
    display: block;
    cursor: zoom-in;
}

/* Gallery Thumbnails */
.bss-product-gallery-thumbnails {
    display: flex;
    gap: var(--bss-spacing-md);
    margin-top: var(--bss-spacing-md);
    overflow-x: auto;
    padding-bottom: var(--bss-spacing-md);
}

.bss-gallery-thumbnail {
    flex: 0 0 var(--bss-image-size-md);
    cursor: pointer;
    border-radius: var(--bss-border-radius);
    overflow: hidden;
    border: 2px solid transparent;
    transition: all var(--bss-transition-fast) ease;
}

.bss-gallery-thumbnail.active {
    border-color: var(--bss-color-primary);
}

.bss-gallery-thumbnail img {
    width: 100%;
    height: var(--bss-image-size-md);
    object-fit: cover;
    display: block;
}

.bss-gallery-thumbnail:hover {
    opacity: var(--bss-opacity-hover);
}

/* Product Info */
.bss-product-info {
    padding-right: var(--bss-spacing-xl);
}

.bss-product-title {
    font-size: var(--bss-font-size-lg);
    margin: 0 0 var(--bss-spacing-md);
    font-weight: bold;
}

.bss-product-rating {
    margin-bottom: var(--bss-spacing-md);
    display: flex;
    align-items: center;
}

.bss-product-rating .star-rating {
    margin: 0 var(--bss-spacing-xs) 0 0;
}

.bss-product-rating .bss-review-count {
    font-size: var(--bss-font-size-md);
    color: var(--bss-color-modal-text);
}

.bss-product-price {
    margin-bottom: var(--bss-spacing-lg);
}

.bss-product-description {
    margin-bottom: var(--bss-spacing-xl);
    line-height: 1.6;
    font-size: var(--bss-font-size-sm);
}

/* ========================================
   FORM COMPONENTS
   ======================================== */

/* Variation Options */
.bss-variation-options {
    margin-top: var(--bss-spacing-md);
}

.bss-variation-options select {
    width: 100%;
    padding: var(--bss-spacing-sm) var(--bss-spacing-md);
    border: 1px solid var(--bss-color-border);
    border-radius: var(--bss-border-radius);
    font-size: var(--bss-font-size-md);
    background-color: #fff;
    color: var(--bss-color-text-primary);
    margin-bottom: var(--bss-spacing-lg);
}

/* ========================================
   QUANTITY CONTROLS
   ======================================== */

.bss-quantity-controls {
    margin: var(--bss-spacing-lg) 0;
}

.bss-plan-option .bss-quantity-controls {
    margin: 0;
}

.bss-quantity-label {
    display: block;
    margin-bottom: var(--bss-spacing-sm);
    font-weight: 500;
    color: var(--bss-color-text-primary);
}

.bss-plan-option .bss-quantity-label,
.bss-product-details-view .bss-quantity-label {
    display: none;
}

.bss-quantity-input-wrapper {
    display: flex;
    align-items: center;
    border: 1px solid var(--bss-color-border);
    border-radius: var(--bss-border-radius);
    overflow: hidden;
    width: fit-content;
    background-color: #fff;
}

.bss-quantity-btn {
    background-color: #f8f9fa;
    border: none;
    padding: 21px 16px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    color: var(--bss-color-text-primary);
    transition: background-color var(--bss-transition-fast);
    min-width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bss-quantity-btn:hover {
    background-color: #e9ecef;
    color: var(--bss-color-text-dark);
}

.bss-quantity-btn:active {
    background-color: #dee2e6;
    color: var(--bss-color-text-dark);
}

.bss-quantity-minus {
    border-top-right-radius: 0 !important;
    border-bottom-right-radius: 0 !important;
    border-right: 1px solid var(--bss-color-border);
}

.bss-quantity-plus {
    border-top-left-radius: 0 !important;
    border-bottom-left-radius: 0 !important;
    border-left: 1px solid var(--bss-color-border);
}

.bss-quantity-input {
    border: none;
    padding: var(--bss-spacing-sm) var(--bss-spacing-md);
    text-align: center;
    width: 60px;
    font-size: var(--bss-font-size-md);
    color: var(--bss-color-text-primary) !important;
    background-color: #fff !important;
    outline: none;
    font-weight: 500;
    line-height: 1.4;
}

.bss-quantity-input:focus {
    outline: none;
    box-shadow: none;
    color: var(--bss-color-text-primary) !important;
    background-color: #fff !important;
}

/* Remove spinner arrows from number input */
.bss-quantity-input::-webkit-outer-spin-button,
.bss-quantity-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.bss-quantity-input[type=number] {
    padding: 0 8px;
    height: auto;
    width: auto;
    line-height: 1;
    border: none;
    font-size: 0.85em;
}

/* ========================================
   LEGACY STYLES
   ======================================== */

/* Legacy Modal Override */
.bss-modal {
    z-index: var(--bss-z-index-modal);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes modalSlideIn {
    from {
        transform: translateY(-var(--bss-spacing-xl));
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
    .bss-modal-content {
        width: 95%;
        margin: var(--bss-spacing-xl) auto;
    }

    .bss-plan-option {
        flex-direction: column;
        align-items: flex-start;
    }

    .bss-plan-option .bss-btn {
        margin: var(--bss-spacing-md) 0 0 0;
        width: 100%;
    }

    .bss-product-details-content {
        grid-template-columns: 1fr;
    }
    
    .bss-product-gallery {
        margin-bottom: var(--bss-spacing-xl);
    }
    
    .bss-product-info {
        padding-right: 0;
    }

    .bss-modal-footer {
        flex-direction: column;
    }

    button.bss-continue-btn {
        width: 100%;
        text-align: center;
        justify-content: center;
        margin: 0;
        order: 1;
    }

    button.bss-back-to-plans,
    button.bss-cancel {
        order: 2;
        width: 100%;
        margin-top: var(--bss-spacing-md);
    }
}

/* Loading Spinner */
.bss-modal-loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.bss-modal-loading.show {
    opacity: 1;
}

.bss-loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--bss-color-border);
    border-top: 4px solid var(--bss-color-primary);
    border-radius: 50%;
    animation: bss-spin 1s linear infinite;
    background: transparent;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

@keyframes bss-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.bss-loading-text {
    margin-top: 15px;
    color: white;
    font-size: 16px;
    text-align: center;
}

.bss-loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}