/* =============================================================================
   BUNDLE BUILDER - CSS STYLES
   A clean, modern interface for product bundle creation
   ============================================================================= */

/* =============================================================================
   CSS RESET & BASE STYLES
   ============================================================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Remove focus outlines and default button styling */
button:focus,
button:focus-visible,
input:focus,
select:focus,
textarea:focus,
*:focus {
    outline: none !important;
}

button {
    border: none;
    background: none;
    outline: none;
}

/* Base typography and body styles */
body {
    font-family: 'Instrument Sans', sans-serif;
    background-color: #ffffff;
    color: #111111;
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* =============================================================================
   PERFORMANCE OPTIMIZATIONS
   ============================================================================= */
/* Mobile performance optimization */
.mobile-optimized * {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000;
}

/* Touch-friendly interactions for mobile devices */
@media (hover: none) and (pointer: coarse) {
    .add-to-bundle-btn:hover,
    .add-bundle-to-cart-btn:hover {
        background: inherit;
    }
    
    .add-to-bundle-btn:active {
        background: #d0d0d0;
        transform: scale(0.98);
    }
    
    .add-to-bundle-btn.selected:active {
        background: #333333;
    }
    
    .add-bundle-to-cart-btn:active {
        background: #333333;
        transform: scale(0.98);
    }
}

/* Prevent zoom on input focus for iOS */
input[type="text"], 
input[type="number"] {
    font-size: 16px;
}

/* Smooth scrolling and accessibility */
html {
    scroll-behavior: smooth;
}

button:focus,
input:focus {
    outline: 2px solid #007AFF;
    outline-offset: 2px;
}

/* =============================================================================
   ANIMATIONS & KEYFRAMES
   ============================================================================= */
/* Skeleton loading animation */
@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Fade in animations for products */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Slide animations for bundle items */
@keyframes slideInFromRight {
    from {
        opacity: 0;
        transform: translateX(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

@keyframes slideOutToRight {
    from {
        opacity: 1;
        transform: translateX(0) scale(1);
        max-height: 112px;
    }
    to {
        opacity: 0;
        transform: translateX(20px) scale(0.95);
        max-height: 0;
        margin-bottom: 0;
        padding: 0;
    }
}

/* Button and progress animations */
@keyframes checkmark-bounce {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

@keyframes progress-shine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* =============================================================================
   SKELETON LOADERS & LOADING STATES
   ============================================================================= */
/* Base skeleton styling */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

.skeleton-image {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 0px;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    z-index: 1;
}

.skeleton-title {
    height: 18px;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
    margin-bottom: 8px;
}

.skeleton-price {
    height: 15px;
    width: 60px;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
    margin-bottom: 15px;
}

.skeleton-button {
    height: 55px;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 0px;
}

/* Bundle skeleton loaders */
.bundle-skeleton-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px 0;
    transition: opacity 0.3s ease;
}

.bundle-skeleton-container.hidden {
    display: none;
}

.bundle-skeleton-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 0;
    height: 64px;
}

.bundle-skeleton-small {
    width: 48px;
    height: 48px;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 6px;
    flex-shrink: 0;
}

.bundle-skeleton-large {
    width: 140px;
    height: 16px;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 2px;
    margin-top: 8px;
}

.bundle-skeleton-row:nth-child(1) .bundle-skeleton-small,
.bundle-skeleton-row:nth-child(1) .bundle-skeleton-large {
    animation-delay: 0s;
}

.bundle-skeleton-row:nth-child(2) .bundle-skeleton-small,
.bundle-skeleton-row:nth-child(2) .bundle-skeleton-large {
    animation-delay: 0.2s;
}

.bundle-skeleton-row:nth-child(3) .bundle-skeleton-small,
.bundle-skeleton-row:nth-child(3) .bundle-skeleton-large {
    animation-delay: 0.4s;
}

/* Pulse animation for loading states */
.pulse {
    animation: pulse 2s infinite;
}

/* =============================================================================
   LAYOUT STRUCTURE
   ============================================================================= */
/* Main container */
.container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px;
    gap: 33px;
    width: 1440px;
    max-width: 1440px;
    height: 1034.72px;
    margin: 0 auto;
}

/* Header section */
.header-container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px;
    gap: 10px;
    width: 1440px;
    height: 44px;
    align-self: stretch;
}

.main-heading {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 44px;
    font-family: 'Instrument Sans';
    font-weight: 600;
    font-size: 36px;
    line-height: 44px;
    text-align: center;
    letter-spacing: -1.224px;
    color: #111111;
    margin: 0;
}

/* Product bundle main section */
.product-bundle {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    padding: 0px;
    gap: 40px;
    isolation: isolate;
    width: 1440px;
    height: 957.72px;
    align-self: stretch;
}

/* =============================================================================
   PRODUCT GRID & CARDS
   ============================================================================= */
/* Products grid container */
.grid-custom {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px;
    gap: 48px;
    width: 1040px;
    height: 957.72px;
    flex-grow: 1;
    z-index: 1;
}

.product-row {
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 0px;
    gap: 30px;
    width: 1040px;
    height: 454.86px;
    align-self: stretch;
}

/* Individual product card */
.product-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px;
    gap: 15px;
    width: 326.67px;
    height: 454.86px;
    flex: 1;
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card:hover {
    transform: translateY(-4px);
}

.product-card.loading .product-info {
    pointer-events: none;
}

.product-card.fade-in {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* Product image container and styling */
.product-image-container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px;
    width: 100%;
    height: 326.66px;
    position: relative;
    overflow: hidden;
}

.product-image {
    width: 100%;
    height: 326.66px;
    object-fit: cover;
    border-radius: 0px;
    transition: all 0.3s ease;
    opacity: 0;
    transform: scale(1.05);
}

.product-image.loaded {
    opacity: 1;
    transform: scale(1);
}

.product-image.skeleton {
    opacity: 0;
}

.product-image[data-src] {
    opacity: 0.7;
    background: #f0f0f0;
}

/* Product information section */
.product-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px;
    gap: 0.5px;
    width: 100%;
    height: 113.2px;
}

.product-link {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px;
    width: 100%;
    height: 18px;
}

.product-title {
    width: 100%;
    height: 18px;
    font-family: 'Instrument Sans';
    font-weight: 600;
    font-size: 15px;
    line-height: 18px;
    display: flex;
    align-items: center;
    color: #111111;
    margin: 0;
}

.product-form-bundle {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 9.7px 0px 0px;
    gap: 15px;
    width: 100%;
    height: 94.7px;
}

.price-container {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    padding: 0px;
    width: 100%;
    height: 15px;
}

.product-price {
    width: 56px;
    height: 15px;
    font-family: 'Instrument Sans';
    font-weight: 400;
    font-size: 15px;
    line-height: 15px;
    display: flex;
    align-items: center;
    color: #666666;
}

/* Button Styles */
.add-to-bundle-btn {
    box-sizing: border-box;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    width: 326.67px;
    height: 55px;
    background: #EBEBEB;
    border: 1px solid #111111;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    flex: none;
    order: 1;
    align-self: stretch;
    flex-grow: 0;
    border-radius: 4px;
    position: relative;
    overflow: hidden;
    outline: none; /* Remove blue focus outline */
}

.add-to-bundle-btn:focus {
    outline: none; /* Remove blue focus outline */
}

.add-to-bundle-btn .btn-text {
    font-family: 'Instrument Sans';
    font-style: normal;
    font-weight: 400;
    font-size: 15px;
    line-height: 18px;
    color: #111111;
    flex: 1;
    text-align: left;
}

.add-to-bundle-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.add-to-bundle-btn:hover::before {
    left: 100%;
}

.add-to-bundle-btn:hover {
    background: #111111;
    color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(17, 17, 17, 0.15);
}

.add-to-bundle-btn:hover .btn-text {
    color: #FFFFFF;
}

.add-to-bundle-btn:hover .plus-icon {
    color: #FFFFFF;
}

.add-to-bundle-btn.selected {
    background: #444444;
    border: 1px solid #444444;
    transform: scale(1.02);
    box-shadow: 0 4px 16px rgba(68, 68, 68, 0.3);
}

.add-to-bundle-btn.selected::before {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}

.add-to-bundle-btn:active {
    transform: scale(0.98);
}

/* Button loading state */
.add-to-bundle-btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.add-to-bundle-btn.loading .btn-text {
    opacity: 0.5;
}

/* Icon animations */
.btn-icon {
    width: 16px;
    height: 16px;
    flex: none;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.add-to-bundle-btn .plus-icon {
    color: #111111;
    transform: rotate(0deg);
}

.add-to-bundle-btn.selected .plus-icon {
    display: none;
    transform: rotate(180deg);
}

.add-to-bundle-btn .check-icon {
    color: #FFFFFF;
    display: none;
    transform: scale(0);
}

.add-to-bundle-btn.selected .check-icon {
    display: block !important;
    transform: scale(1);
    animation: checkmark-bounce 0.4s ease-out;
}

.add-to-bundle-btn.selected .btn-text {
    color: #FFFFFF;
}

/* Disabled state for buttons when bundle is full */
.add-to-bundle-btn.disabled {
    background: #F5F5F5;
    border: 1px solid #E0E0E0;
    cursor: not-allowed;
    transition: all 0.3s ease;
}

.add-to-bundle-btn.disabled:hover {
    background: #F5F5F5;
    border: 1px solid #E0E0E0;
    transform: none;
    box-shadow: none;
}

.add-to-bundle-btn.disabled:hover .btn-text {
    color: #A0A0A0;
}

.add-to-bundle-btn.disabled:hover .plus-icon {
    color: #A0A0A0;
}

.add-to-bundle-btn.disabled::before {
    display: none;
}

.add-to-bundle-btn.disabled .btn-text {
    color: #A0A0A0;
}

.add-to-bundle-btn.disabled .plus-icon {
    color: #A0A0A0;
}

.add-to-bundle-btn.disabled .plus-icon {
    color: #A0A0A0;
}

@keyframes checkmark-bounce {
    0% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
    }
}

/* =============================================================================
   BUNDLE SIDEBAR & LAYOUT
   ============================================================================= */
/* Bundle sidebar container */
.bundle-sidebar {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px;
    width: 360px;
    height: 957.72px;
    flex: none;
    order: 1;
    align-self: stretch;
    flex-grow: 0;
    z-index: 0;
}

/* Sticky container for bundle builder */
.sticky-element {
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 31.25px 27px 32.01px;
    gap: 20px;
    width: 360px;
    min-height: 649.66px;
    max-height: fit-content;
    background: #FFFFFF;
    border: 2px solid #111111;
    flex: none;
    order: 0;
    flex-grow: 0;
    position: sticky;
    top: 20px;
}

/* =============================================================================
   BUNDLE HEADER & TITLE
   ============================================================================= */
/* Bundle header section */
.bundle-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px;
    gap: 3px;
    width: 306px;
    height: 83px;
}

.bundle-title-container {
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 0px;
    width: 306px;
    height: 29px;
}

.bundle-title {
    font-family: 'Instrument Sans';
    font-weight: 600;
    font-size: 24px;
    line-height: 29px;
    display: flex;
    align-items: center;
    letter-spacing: -0.816px;
    color: #111111;
    margin: 0;
}

.bundle-description {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px 0px 17px;
    width: 306px;
    height: 43px;
}

.bundle-description p {
    font-family: 'Instrument Sans';
    font-weight: 400;
    font-size: 15px;
    line-height: 26px;
    display: flex;
    align-items: center;
    color: #444444;
    margin: 0;
}

/* =============================================================================
   PROGRESS BAR
   ============================================================================= */
/* Progress bar styling */
.progress-bundle-bar {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px;
    width: 306px;
    height: 5px;
    background: #EBEBEB;
    border-radius: 99px;
    position: relative;
    overflow: hidden;
}

.progress-background {
    width: 0%;
    height: 5px;
    background: linear-gradient(90deg, #111111, #444444);
    border-radius: 99px;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.progress-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: progress-shine 2s infinite;
}

/* =============================================================================
   SELECTED PRODUCTS
   ============================================================================= */
/* Selected products container */
.selected-products {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px;
    gap: 8px;
    width: 306px;
}

/* Empty state styling */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    text-align: center;
    color: #999999;
    font-family: 'Instrument Sans';
    font-size: 14px;
    line-height: 1.4;
}

.selected-product-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 0 16px 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    animation: slideInFromRight 0.4s ease-out;
    width: 100%;
    background: #fff;
}

.selected-product-item:hover {
    background-color: rgba(245, 245, 245, 0.5);
}

.selected-product-item.removing {
    animation: slideOutToRight 0.3s ease-in forwards;
}

@keyframes slideInFromRight {
    from {
        opacity: 0;
        transform: translateX(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

@keyframes slideOutToRight {
    from {
        opacity: 1;
        transform: translateX(0) scale(1);
        max-height: 112px;
    }
    to {
        opacity: 0;
        transform: translateX(20px) scale(0.95);
        max-height: 0;
        margin-bottom: 0;
        padding: 0;
    }
}

.selected-product-image {
    width: 48px;
    height: 48px;
    object-fit: cover;
    border-radius: 6px;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.selected-product-image:hover {
    transform: scale(1.02);
}

.selected-product-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.selected-product-title {
    font-family: 'Instrument Sans';
    font-style: normal;
    font-weight: 400;
    font-size: 14px;
    line-height: 16px;
    color: #111111;
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.selected-product-price {
    font-family: 'Instrument Sans';
    font-style: normal;
    font-weight: 400;
    font-size: 13px;
    line-height: 14px;
    color: #666666;
    margin: 0;
}

.selected-product-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

/* =============================================================================
   QUANTITY CONTROLS & REMOVE BUTTONS
   ============================================================================= */
/* Quantity input container */
.quantity-input-bundle {
    box-sizing: border-box;
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 1px;
    width: 90px;
    height: 32px;
    background: #F5F5F5;
    border: 1px solid #EBEBEB;
    border-radius: 4px;
}

/* Quantity adjustment buttons */
.quantity-btn {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    padding: 6px;
    width: 28px;
    height: 30px;
    background: #F5F5F5;
    border: none;
    cursor: pointer;
    outline: none;
    transition: all 0.2s ease;
}

.quantity-btn:hover {
    background: #EEEEEE;
    transform: scale(1.05);
}

.quantity-btn:active {
    transform: scale(0.95);
    background: #E0E0E0;
}

.quantity-btn:focus {
    outline: none;
}

/* Quantity input field */
.quantity-input {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 6px 4px;
    width: 34px;
    height: 30px;
    background: #F5F5F5;
    border: none;
    text-align: center;
    font-family: 'Instrument Sans';
    font-weight: 400;
    font-size: 14px;
    line-height: 16px;
    color: #444444;
}

/* Remove button styling */
.remove-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    width: 24px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    outline: none;
    border-radius: 3px;
    transition: background 0.15s, color 0.15s;
    flex-shrink: 0;
    margin-left: 8px;
}

.remove-btn:hover {
    background: #f5f5f5;
    box-shadow: none;
}

.remove-btn:focus {
    outline: none;
}

.remove-btn svg {
    width: 16px;
    height: 16px;
    color: #B0B0B0;
    transition: color 0.15s;
}

.remove-btn:hover svg {
    color: #222;
}

/* =============================================================================
   BUNDLE SUMMARY & PRICING
   ============================================================================= */
/* Bundle summary container */
.bundle-summary {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px;
    gap: 0px;
    width: 306px;
    min-height: 147px;
}

/* Discount row styling */
.discount-row {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px;
    width: 306px;
    height: 60px;
}

.discount-border {
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px;
    width: 306px;
    height: 36px;
    border-top: 1px solid #EBEBEB;
}

.discount-container {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0px;
    gap: 10px;
    width: 306px;
    height: 36px;
}

.discount-label {
    font-family: 'Instrument Sans';
    font-style: normal;
    font-weight: 400;
    font-size: 15px;
    line-height: 26px;
    display: flex;
    align-items: center;
    color: #111111;
    flex-shrink: 0;
}

.discount-amount {
    font-family: 'Instrument Sans';
    font-style: normal;
    font-weight: 400;
    font-size: 15px;
    line-height: 26px;
    display: flex;
    align-items: center;
    color: #111111;
    white-space: nowrap;
}

.subtotal-row {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px;
    width: 306px;
    height: 56px;
}

.subtotal-border {
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0px;
    width: 306px;
    height: 56px;
    border-top: 1px solid #EBEBEB;
}

.subtotal-container {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0px;
    gap: 10px;
    width: 306px;
    height: 56px;
}

.subtotal-label {
    font-family: 'Instrument Sans';
    font-style: normal;
    font-weight: 600;
    font-size: 18px;
    line-height: 22px;
    display: flex;
    align-items: center;
    color: #111111;
}

.subtotal-amount {
    font-family: 'Instrument Sans';
    font-style: normal;
    font-weight: 600;
    font-size: 18px;
    line-height: 22px;
    display: flex;
    align-items: center;
    color: #111111;
}

/* Add Bundle to Cart Button */
.add-bundle-to-cart-btn {
    box-sizing: border-box;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    width: 306px;
    height: 55px;
    background: #444444;
    border: 1px solid #444444;
    cursor: pointer;
    transition: all 0.3s ease;
    flex: none;
    order: 1;
    align-self: stretch;
    flex-grow: 0;
    outline: none; /* Remove blue focus outline */
}

.add-bundle-to-cart-btn:focus {
    outline: none; /* Remove blue focus outline */
}

.add-bundle-to-cart-btn:disabled {
    background: #EBEBEB;
    border: 1px solid #EBEBEB;
    cursor: not-allowed;
    opacity: 0.6;
}

.add-bundle-to-cart-btn .btn-text {
    font-family: 'Instrument Sans';
    font-style: normal;
    font-weight: 600;
    font-size: 15px;
    line-height: 18px;
    color: #FFFFFF;
    flex: 1;
    text-align: left;
}

.add-bundle-to-cart-btn:disabled .btn-text {
    color: #666666;
}

.add-bundle-to-cart-btn .caret-icon {
    width: 16px;
    height: 16px;
    color: #FFFFFF;
    flex: none;
    flex-shrink: 0;
}

.add-bundle-to-cart-btn:disabled .caret-icon {
    color: #666666;
}

.add-bundle-to-cart-btn:hover {
    background: #111111;
    border-color: #111111;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(17, 17, 17, 0.25);
}

.add-bundle-to-cart-btn:hover .btn-text {
    color: #FFFFFF;
}

.add-bundle-to-cart-btn:hover .caret-icon {
    color: #FFFFFF;
    transform: translateX(2px);
}

.add-bundle-to-cart-btn.enabled {
    background: linear-gradient(135deg, #444444, #555555);
    box-shadow: 0 4px 16px rgba(68, 68, 68, 0.3);
    transform: translateY(-1px);
}

.add-bundle-to-cart-btn.loading {
    background: #666666;
    pointer-events: none;
}

.add-bundle-to-cart-btn.loading .btn-text {
    opacity: 0.7;
}

.add-bundle-to-cart-btn.proceed-state {
    background: #28a745;
    border: 1px solid #28a745;
    animation: proceedPulse 0.5s ease-in-out;
}

.add-bundle-to-cart-btn.proceed-state .btn-text {
    color: #ffffff;
    font-weight: 600;
}

.add-bundle-to-cart-btn.added-state {
    background: #444444;
    border: 1px solid #444444;
}

.add-bundle-to-cart-btn.added-state .btn-text {
    color: #ffffff;
    font-weight: 600;
}

.add-bundle-to-cart-btn.added-state .caret-icon {
    transform: rotate(0deg);
    opacity: 1;
}

@keyframes proceedPulse {
    0% {
        transform: scale(1);
        background: #444444;
    }
    50% {
        transform: scale(1.02);
        background: #218838;
    }
    100% {
        transform: scale(1);
        background: #28a745;
    }
}

@keyframes addedSuccess {
    0% {
        transform: scale(1);
        background: #444444;
    }
    50% {
        transform: scale(1.05);
        background: #20c997;
    }
    100% {
        transform: scale(1);
        background: #28a745;
    }
}

/* Success Notification */
.success-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #FFFFFF;
    border: 2px solid #28a745;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 8px 32px rgba(40, 167, 69, 0.2);
    z-index: 1000;
    animation: slideInFromRight 0.4s ease-out;
    max-width: 350px;
    display: none; /* Hide notifications completely */
}

/* =============================================================================
   RESPONSIVE DESIGN & MEDIA QUERIES
   ============================================================================= */
/* Mobile-first responsive design approach
   Base styles are optimized for mobile (320px+) */

@media (max-width: 1439px) {
    .container {
        width: 100%;
        max-width: 100%;
        padding: 0 20px;
        height: auto;
        min-height: auto;
    }
    
    .header-container {
        width: 100%;
    }
    
    .main-heading {
        width: 100%;
        font-size: clamp(24px, 5vw, 36px);
        line-height: clamp(28px, 5.5vw, 44px);
        letter-spacing: clamp(-0.8px, -0.1vw, -1.224px);
    }
    
    .product-bundle {
        flex-direction: column;
        width: 100%;
        height: auto;
        gap: 30px;
    }
    
    .grid-custom {
        width: 100%;
        height: auto;
        order: 1;
    }
    
    .bundle-sidebar {
        width: 100%;
        height: auto;
        order: 2;
    }
    
    .sticky-element {
        width: 100%;
        height: auto;
        max-height: none;
        position: static;
        padding: 20px;
        margin-bottom: 20px;
    }
}

/* Large Tablets and Small Desktops */
@media (max-width: 1200px) {
    .product-row {
        width: 100%;
        gap: 20px;
    }
    
    .product-card {
        width: calc(50% - 10px);
        min-width: 280px;
    }
    
    .bundle-header,
    .selected-products,
    .bundle-summary,
    .add-bundle-to-cart-btn {
        width: 100%;
    }
    
    .bundle-title {
        font-size: 22px;
        line-height: 26px;
    }
    
    .selected-product-controls {
        gap: 40px;
    }
}

/* Tablets */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
        gap: 25px;
    }
    
    .main-heading {
        font-size: clamp(22px, 4.5vw, 32px);
        line-height: clamp(26px, 5vw, 36px);
    }
    
    .product-row {
        flex-direction: column;
        height: auto;
        gap: 20px;
        align-items: center;
    }
    
    .product-card {
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .product-image {
        height: 280px;
    }
    
    .product-image-container {
        height: 280px;
    }
    
    .add-to-bundle-btn {
        width: 100%;
    }
    
    .sticky-element {
        padding: 15px;
        gap: 20px;
    }
    
    .bundle-title {
        font-size: 20px;
        line-height: 24px;
    }
    
    .bundle-description p {
        font-size: 14px;
        line-height: 22px;
    }
    
    .selected-product-item {
        width: 100%;
        gap: 15px;
    }
    
    .selected-product-image {
        width: 70px;
        height: 70px;
        max-width: 70px;
    }
    
    .selected-product-info {
        width: calc(100% - 85px);
        height: auto;
    }
    
    .selected-product-controls {
        gap: 20px;
        flex-wrap: wrap;
    }
    
    .quantity-input-bundle {
        width: 90px;
        height: 32px;
    }
    
    .quantity-btn {
        width: 28px;
        height: 30px;
        padding: 6px;
    }
    
    .quantity-input {
        width: 34px;
        height: 30px;
        font-size: 13px;
    }
}

/* Small Tablets and Large Phones */
@media (max-width: 640px) {
    .container {
        padding: 0 12px;
        gap: 20px;
    }
    
    .product-card {
        max-width: 350px;
    }
    
    .product-image,
    .product-image-container {
        height: 250px;
    }
    
    .selected-product-controls {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }
    
    .quantity-input-bundle {
        order: 1;
    }
    
    .remove-btn {
        order: 2;
        align-self: flex-end;
    }
}

/* Mobile Phones */
@media (max-width: 480px) {
    .container {
        padding: 0 10px;
        gap: 15px;
    }
    
    .main-heading {
        font-size: clamp(20px, 6vw, 28px);
        line-height: clamp(24px, 6.5vw, 32px);
        padding: 10px 0;
    }
    
    .product-bundle {
        gap: 20px;
    }
    
    .product-card {
        max-width: 100%;
        gap: 12px;
    }
    
    .product-image,
    .product-image-container {
        height: 220px;
    }
    
    .product-title {
        font-size: 14px;
        line-height: 16px;
    }
    
    .product-price {
        font-size: 14px;
        line-height: 14px;
    }
    
    .add-to-bundle-btn {
        padding: 14px;
        height: 50px;
    }
    
    .add-to-bundle-btn .btn-text {
        font-size: 14px;
        line-height: 16px;
        width: auto;
    }
    
    .sticky-element {
        padding: 12px;
        gap: 15px;
        border-width: 1px;
    }
    
    .bundle-title {
        font-size: 18px;
        line-height: 22px;
    }
    
    .bundle-description p {
        font-size: 13px;
        line-height: 20px;
    }
    
    .selected-product-item {
        gap: 10px;
        min-height: auto;
        padding: 10px 0;
        border-bottom: 1px solid #f0f0f0;
    }
    
    .selected-product-image {
        width: 60px;
        height: 60px;
        max-width: 60px;
    }
    
    .selected-product-info {
        width: calc(100% - 70px);
    }
    
    .selected-product-title {
        font-size: 13px;
        line-height: 14px;
        margin-bottom: 5px;
    }
    
    .selected-product-price {
        font-size: 13px;
        line-height: 14px;
        margin-bottom: 8px;
    }
    
    .selected-product-controls {
        width: 100%;
        justify-content: space-between;
    }
    
    .quantity-input-bundle {
        width: 80px;
        height: 30px;
    }
    
    .quantity-btn {
        width: 25px;
        height: 28px;
        padding: 4px;
    }
    
    .quantity-input {
        width: 30px;
        height: 28px;
        font-size: 12px;
        line-height: 14px;
    }
    
    .remove-btn {
        width: 24px;
        height: 24px;
        padding: 2px;
    }
    
    .remove-btn svg {
        width: 12px;
        height: 12px;
    }
    
    .discount-container,
    .subtotal-container {
        gap: 20px;
        padding: 10px 0;
    }
    
    .discount-label,
    .discount-amount,
    .subtotal-label,
    .subtotal-amount {
        font-size: 14px;
        line-height: 20px;
    }
    
    .add-bundle-to-cart-btn {
        height: 48px;
        padding: 12px;
    }
    
    .add-bundle-to-cart-btn .btn-text {
        font-size: 14px;
        line-height: 16px;
        width: auto;
    }
}

/* Very Small Phones */
@media (max-width: 360px) {
    .container {
        padding: 0 8px;
    }
    
    .main-heading {
        font-size: 18px;
        line-height: 22px;
    }
    
    .product-image,
    .product-image-container {
        height: 200px;
    }
    
    .sticky-element {
        padding: 10px;
    }
    
    .bundle-title {
        font-size: 16px;
        line-height: 20px;
    }
    
    .selected-product-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .selected-product-image {
        width: 50px;
        height: 50px;
        max-width: 50px;
        align-self: flex-start;
    }
    
    .selected-product-info {
        width: 100%;
        order: 2;
    }
    
    .selected-product-controls {
        order: 3;
        width: 100%;
        margin-top: 5px;
    }
}

/* Landscape orientation for phones */
@media (max-width: 768px) and (orientation: landscape) {
    .product-row {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .product-card {
        width: calc(50% - 10px);
        max-width: 300px;
    }
    
    .product-image,
    .product-image-container {
        height: 200px;
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .product-image {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Print styles */
@media print {
    .container {
        width: 100% !important;
        max-width: none !important;
        padding: 0 !important;
    }
    
    .product-bundle {
        flex-direction: column;
    }
    
    .sticky-element {
        position: static !important;
        border: 1px solid #000 !important;
    }
    
    .add-to-bundle-btn,
    .add-bundle-to-cart-btn,
    .quantity-btn,
    .remove-btn {
        display: none !important;
    }
}