/**
 * Flammus Konfigurator Styles
 * 
 * Styles for the glass configurator interface.
 * Based on the provided Tailwind design, converted to vanilla CSS.
 *
 * @package Flammus
 */

/* =========================================
   CSS Variables
   ========================================= */
:root {
    --fk-primary: #c6a47e;
    --fk-secondary: #000000;
    --fk-stone-50: #fafaf9;
    --fk-stone-100: #f5f5f4;
    --fk-stone-200: #e7e5e4;
    --fk-stone-300: #d6d3d1;
    --fk-stone-400: #a8a29e;
    --fk-stone-500: #78716c;
    --fk-stone-600: #57534e;
    --fk-stone-700: #44403c;
    --fk-stone-800: #292524;
    --fk-stone-900: #1c1917;
    --fk-white: #ffffff;
    --fk-orange-500: #f97316;
    --fk-emerald-100: #d1fae5;
    --fk-emerald-600: #059669;
    --fk-emerald-700: #047857;
    --fk-amber-100: #fef3c7;
    --fk-amber-700: #b45309;
    --fk-blue-100: #dbeafe;
    --fk-blue-700: #1d4ed8;
    --fk-rose-100: #ffe4e6;
    --fk-rose-700: #be123c;
    --fk-purple-100: #f3e8ff;
    --fk-purple-700: #7c3aed;
    --fk-red-500: #ef4444;
    --fk-font-family: 'Caladea', serif;
    --fk-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --fk-radius-sm: 8px;
    --fk-radius-md: 12px;
    --fk-radius-lg: 16px;
    --fk-radius-xl: 24px;
    --fk-radius-2xl: 32px;
    --fk-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --fk-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --fk-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --fk-shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --fk-shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --fk-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =========================================
   Base Styles
   ========================================= */
.flammus-konfigurator {
    font-family: var(--fk-font-family);
    color: var(--fk-stone-900);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    margin: 50px 0px;
}

.flammus-konfigurator *,
.flammus-konfigurator *::before,
.flammus-konfigurator *::after {
    box-sizing: border-box;
}

/* Hide number input spinners */
.flammus-konfigurator input[type=number]::-webkit-inner-spin-button,
.flammus-konfigurator input[type=number]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.flammus-konfigurator input[type=number] {
    -moz-appearance: textfield;
    appearance: textfield;
}

/* =========================================
   Container
   ========================================= */
.fk-container {
    width: 100%;
    max-width: 90rem;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-radius: var(--fk-radius-2xl);
    box-shadow: var(--fk-shadow-2xl), 0 0 0 1px rgba(255, 255, 255, 0.6);
    overflow: hidden;
    position: relative;
    z-index: 1;
}

/* =========================================
   Header Section
   ========================================= */
.fk-header {
    text-align: center;
    padding: 2.5rem 1.5rem 2rem;
    background: linear-gradient(to bottom, var(--fk-white), rgba(250, 250, 249, 0.5));
}

.fk-title {
    font-size: clamp(2rem, 5vw, 3.75rem);
    font-weight: 600;
    letter-spacing: -0.025em;
    margin: 0 0 0.75rem;
    color: var(--fk-stone-900);
}

.fk-title-accent {
    color: var(--fk-stone-400);
    font-style: italic;
    font-weight: 400;
}

.fk-subtitle {
    font-size: 1.125rem;
    color: var(--fk-stone-500);
    max-width: 42rem;
    margin: 0 auto;
    line-height: 1.6;
}

/* =========================================
   Controls Section
   ========================================= */
.fk-controls {
    padding: 0 1rem 2rem;
}

@media (min-width: 768px) {
    .fk-controls {
        padding: 0 2rem 2rem;
    }
}

.fk-controls-inner {
    background: linear-gradient(to bottom right, var(--fk-stone-50), var(--fk-stone-100));
    border-radius: var(--fk-radius-xl);
    padding: 1.5rem;
    border: 1px solid rgba(231, 229, 228, 0.6);
    box-shadow: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);
}

@media (min-width: 768px) {
    .fk-controls-inner {
        padding: 2rem;
    }
}

.fk-controls-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

@media (min-width: 1280px) {
    .fk-controls-grid {
        flex-direction: row;
        gap: 4rem;
    }
}

/* =========================================
   Dimensions Input
   ========================================= */
.fk-dimensions {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    justify-content: center;
}

.fk-dimension-inputs {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 1rem;
    width: 100%;
}

@media (min-width: 640px) {
    .fk-dimension-inputs {
        flex-direction: row;
    }
}

.fk-input-group {
    position: relative;
    width: 100%;
}

.fk-input-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--fk-stone-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    margin-left: 0.25rem;
}

.fk-input-label svg {
    width: 0.75rem;
    height: 0.75rem;
}

.fk-input-wrapper {
    background: var(--fk-white);
    border-radius: var(--fk-radius-lg);
    border: 1px solid var(--fk-stone-200);
    padding: 0.5rem;
    display: flex;
    align-items: center;
    box-shadow: var(--fk-shadow-sm);
    transition: var(--fk-transition);
}

.fk-input-wrapper:hover {
    border-color: var(--fk-stone-300);
    box-shadow: var(--fk-shadow-md);
}

.fk-input-wrapper:focus-within {
    box-shadow: 0 0 0 2px var(--fk-white), 0 0 0 4px var(--fk-secondary);
}

.fk-input {
    width: 100%;
    padding: 0 1rem;
    font-size: 1.875rem;
    font-weight: 600;
    font-family: var(--fk-font-sans);
    color: var(--fk-stone-900);
    background: transparent;
    border: none;
    outline: none;
    text-align: center;
    height: 3rem;
}

.fk-input::placeholder {
    color: var(--fk-stone-200);
}

.fk-dimension-separator {
    display: none;
    color: var(--fk-stone-300);
    padding-bottom: 1.25rem;
}

@media (min-width: 640px) {
    .fk-dimension-separator {
        display: block;
    }
}

.fk-dimension-separator svg {
    width: 1.25rem;
    height: 1.25rem;
    stroke-width: 2;
}

/* Area Display */
.fk-area-display {
    display: flex;
    justify-content: center;
}

.fk-area-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--fk-white);
    padding: 0.625rem 1.25rem;
    border-radius: 9999px;
    border: 1px solid var(--fk-stone-200);
    box-shadow: var(--fk-shadow-sm);
}

.fk-area-badge svg {
    width: 1rem;
    height: 1rem;
    color: var(--fk-orange-500);
}

.fk-area-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--fk-stone-500);
}

.fk-area-value {
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--fk-font-sans);
    color: var(--fk-stone-900);
}

/* =========================================
   Edge Selection
   ========================================= */
.fk-edge-selection {
    flex: 1;
}

.fk-edge-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    margin-left: 0.25rem;
}

.fk-edge-header svg {
    width: 1rem;
    height: 1rem;
    color: var(--fk-stone-400);
    stroke-width: 1.5;
}

.fk-edge-header span {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--fk-stone-400);
}

.fk-edge-options {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

@media (min-width: 768px) {
    .fk-edge-options {
        grid-template-columns: repeat(3, 1fr);
    }
}

.fk-edge-option {
    cursor: pointer;
    position: relative;
    height: 100%;
}

.fk-edge-option input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.fk-edge-card {
    height: 100%;
    padding: 1rem 0.5rem;
    border-radius: var(--fk-radius-lg);
    background: var(--fk-white);
    border: 1px solid var(--fk-stone-200);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    text-align: center;
    gap: 0.75rem;
    position: relative;
    overflow: hidden;
    transition: var(--fk-transition);
    box-shadow: var(--fk-shadow-sm);
}

.fk-edge-card:hover {
    border-color: var(--fk-stone-300);
    box-shadow: var(--fk-shadow-md);
}

.fk-edge-option input:checked+.fk-edge-card {
    border-color: var(--fk-secondary);
    box-shadow: 0 0 0 1px var(--fk-secondary);
}

.fk-edge-check {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    opacity: 0;
    transition: opacity 0.2s;
}

.fk-edge-option input:checked+.fk-edge-card .fk-edge-check {
    opacity: 1;
}

.fk-edge-check svg {
    width: 1rem;
    height: 1rem;
    color: var(--fk-secondary);
    fill: var(--fk-stone-100);
    stroke-width: 1.5;
}

.fk-edge-icon {
    margin-top: 0.5rem;
    color: var(--fk-stone-300);
    transition: color 0.3s;
}

.fk-edge-card:hover .fk-edge-icon {
    color: var(--fk-stone-500);
}

.fk-edge-option input:checked+.fk-edge-card .fk-edge-icon {
    color: var(--fk-stone-900);
}

.fk-edge-icon svg {
    width: 2rem;
    height: 2rem;
    stroke-width: 1;
}

.fk-edge-info {
    display: flex;
    flex-direction: column;
}

.fk-edge-name {
    font-weight: 600;
    color: var(--fk-stone-900);
    font-size: 1rem;
}

.fk-edge-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--fk-stone-400);
    text-transform: uppercase;
    margin-top: 0.25rem;
}

.fk-edge-price {
    font-size: 0.625rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    background: var(--fk-stone-100);
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    color: var(--fk-stone-500);
    text-transform: uppercase;
    transition: background 0.3s;
}

.fk-edge-card:hover .fk-edge-price {
    background: var(--fk-stone-200);
}

.fk-edge-price-free {
    background: var(--fk-emerald-100);
    color: var(--fk-emerald-700);
}

/* =========================================
   Product Grid
   ========================================= */
.fk-products {
    padding: 0 1rem 3rem;
    background: var(--fk-white);
}

@media (min-width: 768px) {
    .fk-products {
        padding: 0 2rem 3rem;
    }
}

.fk-product-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .fk-product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .fk-product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1280px) {
    .fk-product-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.fk-no-products {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: var(--fk-stone-500);
}

/* Product Card */
.fk-product-card {
    display: flex;
    flex-direction: column;
    position: relative;
    background: var(--fk-white);
    border: 1px solid var(--fk-stone-100);
    border-radius: var(--fk-radius-xl);
    padding: 1rem;
    transition: var(--fk-transition);
    box-shadow: 0 0 0 1px var(--fk-stone-100);
}

.fk-product-card:hover {
    box-shadow: var(--fk-shadow-xl), 0 0 0 1px var(--fk-stone-200);
    transform: translateY(-4px);
}

.fk-product-image {
    aspect-ratio: 1;
    background: linear-gradient(to bottom right, var(--fk-stone-50), var(--fk-stone-100));
    border-radius: var(--fk-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    overflow: hidden;
    position: relative;
}

/* Product Featured Image */
.fk-product-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.fk-product-card:hover .fk-product-img {
    transform: scale(1.05);
}

.fk-product-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(231, 229, 228, 0.5), transparent);
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
}

.fk-product-card:hover .fk-product-image::after {
    opacity: 1;
}

/* Fallback glass style when no image */
.fk-product-glass-fallback {
    width: 60%;
    height: 60%;
    transform: rotate(-12deg) skewY(6deg);
    background: linear-gradient(135deg, rgba(200, 200, 200, 0.3), rgba(150, 150, 150, 0.1));
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.4);
    border-radius: 2px;
    border-top: 1px solid rgba(255, 255, 255, 0.4);
    transition: transform 0.5s;
}

.fk-product-card:hover .fk-product-glass-fallback {
    transform: rotate(-8deg) skewY(4deg) scale(1.05);
}

/* Legacy glass preview styles removed - now using featured images */

/* Product Info */
.fk-product-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0 0.25rem;
}

.fk-product-meta {
    margin-bottom: 1rem;
}

.fk-product-badge {
    display: inline-block;
    font-size: 0.625rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.125rem 0.5rem;
    border-radius: 9999px;
    margin-bottom: 0.5rem;
}

/* Badge Colors */
.bg-stone-100 {
    background: var(--fk-stone-100);
}

.text-stone-600 {
    color: var(--fk-stone-600);
}

.bg-amber-100 {
    background: var(--fk-amber-100);
}

.text-amber-700 {
    color: var(--fk-amber-700);
}

.bg-blue-100 {
    background: var(--fk-blue-100);
}

.text-blue-700 {
    color: var(--fk-blue-700);
}

.bg-stone-800 {
    background: var(--fk-stone-800);
}

.text-stone-100 {
    color: var(--fk-stone-100);
}

.bg-rose-100 {
    background: var(--fk-rose-100);
}

.text-rose-700 {
    color: var(--fk-rose-700);
}

.bg-purple-100 {
    background: var(--fk-purple-100);
}

.text-purple-700 {
    color: var(--fk-purple-700);
}

.fk-product-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--fk-stone-900);
    line-height: 1.3;
    margin: 0;
}

.fk-product-thickness {
    display: block;
    color: var(--fk-stone-500);
    font-weight: 400;
    font-size: 1.125rem;
}

.fk-product-footer {
    margin-top: auto;
    border-top: 1px solid var(--fk-stone-100);
    padding-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.fk-product-price {
    display: flex;
    align-items: baseline;
    gap: 0.25rem;
}

.fk-price-display {
    font-size: 1.5rem;
    font-family: var(--fk-font-sans);
    font-weight: 600;
    letter-spacing: -0.025em;
    color: var(--fk-secondary);
}

.fk-price-vat {
    color: var(--fk-stone-400);
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.fk-add-to-cart {
    width: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;

    /* Premium Glassy Black/White Style */
    background: linear-gradient(135deg, rgba(20, 20, 20, 0.95) 0%, rgba(40, 40, 40, 0.98) 100%);
    color: var(--fk-white);
    font-family: var(--fk-font-family);
    font-weight: 600;
    letter-spacing: 0.025em;
    font-size: 0.875rem;

    border: 1px solid rgba(255, 255, 255, 0.1);
    border-top-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--fk-radius-md);
    cursor: pointer;
    overflow: hidden;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow:
        0 4px 15px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Glassy shine overlay */
.fk-add-to-cart::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.1),
            transparent);
    transition: left 0.5s ease;
    z-index: 1;
}

/* Animated hue glow effect - Monochrome */
.fk-add-to-cart::after {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(45deg,
            #ffffff,
            #666666,
            #000000,
            #666666,
            #ffffff,
            #666666,
            #000000,
            #ffffff);
    background-size: 400% 400%;
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    filter: blur(8px);
    transition: opacity 0.4s ease;
    animation: fk-hue-rotate 3s linear infinite;
}

.fk-add-to-cart span,
.fk-add-to-cart i,
.fk-add-to-cart svg {
    position: relative;
    z-index: 2;
}

.fk-add-to-cart:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, rgba(30, 30, 30, 0.95) 0%, rgba(50, 50, 50, 0.98) 100%);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow:
        0 8px 25px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.fk-add-to-cart:hover::before {
    left: 100%;
}

.fk-add-to-cart:hover::after {
    opacity: 0.3;
}

.fk-add-to-cart:active {
    transform: scale(0.98) translateY(0);
}

.fk-add-to-cart.fk-loading {
    cursor: wait;
    pointer-events: none;
    opacity: 0.85;
    animation: fk-pulse 1.5s ease-in-out infinite;
}

@keyframes fk-pulse {

    0%,
    100% {
        opacity: 0.85;
    }

    50% {
        opacity: 0.65;
    }
}

.fk-add-to-cart.fk-loading .fk-btn-spinner {
    animation: fk-spin 0.8s linear infinite;
}

.fk-add-to-cart.fk-btn-success {
    background: var(--fk-emerald-600);
    animation: none;
    opacity: 1;
}

.fk-btn-spinner,
.fk-btn-success-icon {
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
}

.fk-add-to-cart svg {
    width: 1rem;
    height: 1rem;
    stroke-width: 1.5;
}

/* Hint */
.fk-hint {
    margin-top: 3rem;
    text-align: center;
}

.fk-hint p {
    color: var(--fk-stone-400);
    font-size: 0.875rem;
    font-style: italic;
    margin: 0;
}

/* =========================================
   Modal
   ========================================= */
.fk-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(28, 25, 23, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 999998;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.fk-modal-backdrop-open {
    opacity: 1;
    pointer-events: auto;
}

.fk-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.fk-modal-open {
    opacity: 1;
    pointer-events: auto;
}

.fk-modal-content {
    background: var(--fk-white);
    border-radius: var(--fk-radius-2xl);
    box-shadow: var(--fk-shadow-2xl);
    width: 100%;
    max-width: 32rem;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 0 1px rgba(28, 25, 23, 0.05);
    transform: scale(0.95);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.fk-modal-open .fk-modal-content {
    transform: scale(1);
}

.fk-modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--fk-stone-100);
    padding: 0.5rem;
    border-radius: 9999px;
    border: none;
    cursor: pointer;
    color: var(--fk-stone-500);
    transition: var(--fk-transition);
    z-index: 10;
}

.fk-modal-close:hover {
    background: var(--fk-stone-200);
    color: var(--fk-stone-900);
}

.fk-modal-close svg {
    width: 1.25rem;
    height: 1.25rem;
}

.fk-modal-inner {
    padding: 2rem;
    overflow-y: auto;
}

/* Custom scrollbar */
.fk-modal-inner::-webkit-scrollbar {
    width: 4px;
}

.fk-modal-inner::-webkit-scrollbar-track {
    background: transparent;
}

.fk-modal-inner::-webkit-scrollbar-thumb {
    background: var(--fk-stone-200);
    border-radius: 4px;
}

.fk-modal-inner::-webkit-scrollbar-thumb:hover {
    background: var(--fk-stone-300);
}

/* Prevent body scroll when modal is open */
body.fk-modal-body-open {
    overflow: hidden;
}

/* Modal Header */
.fk-modal-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.fk-modal-icon {
    background: var(--fk-secondary);
    padding: 0.5rem;
    border-radius: var(--fk-radius-sm);
    color: var(--fk-white);
}

.fk-modal-icon svg {
    width: 1.25rem;
    height: 1.25rem;
}

.fk-modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--fk-stone-900);
    margin: 0;
}

/* =========================================
   Cart
   ========================================= */
.fk-cart-container {
    background: rgba(250, 250, 249, 0.5);
    border-radius: var(--fk-radius-lg);
    padding: 0.5rem;
    margin-bottom: 1rem;
    border: 1px solid var(--fk-stone-100);
    box-shadow: 0 0 0 1px rgba(231, 229, 228, 0.5);
}

.fk-cart-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 15rem;
    overflow-y: auto;
    padding: 0.25rem;
}

.fk-cart-list::-webkit-scrollbar {
    width: 4px;
}

.fk-cart-list::-webkit-scrollbar-track {
    background: transparent;
}

.fk-cart-list::-webkit-scrollbar-thumb {
    background: var(--fk-stone-200);
    border-radius: 4px;
}

.fk-cart-empty {
    text-align: center;
    padding: 1rem;
    color: var(--fk-stone-400);
}

.fk-cart-item {
    display: flex;
    flex-direction: column;
    padding: 0.75rem;
    background: var(--fk-white);
    border-radius: var(--fk-radius-md);
    box-shadow: var(--fk-shadow-sm);
    border: 1px solid var(--fk-stone-200);
    gap: 0.75rem;
}

@media (min-width: 640px) {
    .fk-cart-item {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.fk-cart-item-info {
    flex: 1;
}

.fk-cart-item-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.fk-cart-item-name {
    font-weight: 600;
    color: var(--fk-stone-900);
}

.fk-cart-item-thickness {
    font-size: 0.75rem;
    background: var(--fk-stone-100);
    color: var(--fk-stone-600);
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    font-weight: 600;
}

.fk-cart-item-details {
    font-size: 0.75rem;
    color: var(--fk-stone-500);
    margin-top: 0.25rem;
}

.fk-cart-item-price-mobile {
    font-size: 0.875rem;
    font-family: var(--fk-font-sans);
    font-weight: 600;
    color: var(--fk-stone-900);
    margin-top: 0.25rem;
}

@media (min-width: 640px) {
    .fk-cart-item-price-mobile {
        display: none;
    }
}

.fk-cart-item-per-piece {
    color: var(--fk-stone-400);
    font-weight: 400;
}

.fk-cart-item-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 100%;
    justify-content: space-between;
}

@media (min-width: 640px) {
    .fk-cart-item-controls {
        width: auto;
        justify-content: flex-end;
    }
}

.fk-quantity-control {
    display: flex;
    align-items: center;
    background: var(--fk-stone-100);
    border-radius: var(--fk-radius-sm);
    padding: 0.25rem;
}

.fk-qty-btn {
    width: 1.75rem;
    height: 1.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    background: var(--fk-white);
    color: var(--fk-stone-600);
    box-shadow: var(--fk-shadow-sm);
    border: none;
    cursor: pointer;
    transition: color 0.2s;
}

.fk-qty-btn:hover:not(:disabled) {
    color: var(--fk-secondary);
}

.fk-qty-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.fk-qty-btn svg {
    width: 0.75rem;
    height: 0.75rem;
}

.fk-qty-value {
    width: 2rem;
    text-align: center;
    font-size: 0.875rem;
    font-family: var(--fk-font-sans);
    font-weight: 700;
}

.fk-cart-item-total {
    font-size: 0.875rem;
    font-family: var(--fk-font-sans);
    font-weight: 600;
    color: var(--fk-stone-900);
    min-width: 5rem;
    text-align: right;
    display: none;
}

@media (min-width: 640px) {
    .fk-cart-item-total {
        display: block;
    }
}

.fk-cart-item-remove {
    color: var(--fk-stone-300);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    transition: color 0.2s;
}

.fk-cart-item-remove:hover {
    color: var(--fk-red-500);
}

.fk-cart-item-remove svg {
    width: 1rem;
    height: 1rem;
}

/* Cart Total */
.fk-cart-total {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 2rem;
    padding: 0 0.5rem;
}

.fk-cart-total-label {
    color: var(--fk-stone-400);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.fk-cart-total-value {
    text-align: right;
}

#fk-cart-total {
    display: block;
    font-size: 1.875rem;
    font-family: var(--fk-font-sans);
    font-weight: 600;
    color: var(--fk-stone-900);
    letter-spacing: -0.025em;
}

.fk-cart-total-vat {
    font-size: 0.625rem;
    color: var(--fk-stone-400);
    font-weight: 600;
    text-transform: uppercase;
}

/* =========================================
   Checkout Form
   ========================================= */
.fk-checkout-form {
    border-top: 1px solid var(--fk-stone-100);
    padding-top: 1.5rem;
}

.fk-form-section {
    margin-bottom: 1.5rem;
}

.fk-form-section-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--fk-stone-700);
    margin: 0 0 1rem;
}

.fk-form-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.fk-form-field {
    flex: 1;
}

.fk-form-field-full {
    flex: 1 1 100%;
}

.fk-form-field-small {
    flex: 0 0 30%;
}

.fk-form-field-large {
    flex: 1;
}

.fk-form-field label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--fk-stone-500);
    text-transform: uppercase;
    margin-bottom: 0.25rem;
    margin-left: 0.25rem;
}

.fk-form-field label .required {
    color: var(--fk-red-500);
}

.fk-form-field input,
.fk-form-field select,
.fk-form-field textarea {
    width: 100%;
    background: var(--fk-white);
    border: 1px solid var(--fk-stone-200);
    border-radius: var(--fk-radius-md);
    padding: 0.625rem 0.75rem;
    font-family: var(--fk-font-family);
    font-size: 1rem;
    color: var(--fk-stone-900);
    transition: var(--fk-transition);
}

.fk-form-field input:focus,
.fk-form-field select:focus,
.fk-form-field textarea:focus {
    outline: none;
    border-color: var(--fk-secondary);
    box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.05);
}

.fk-form-field input::placeholder,
.fk-form-field textarea::placeholder {
    color: var(--fk-stone-300);
}

.fk-form-field textarea {
    resize: vertical;
    min-height: 80px;
}

/* Toggle */
.fk-form-toggle {
    margin-bottom: 1rem;
}

.fk-toggle {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
}

.fk-toggle input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.fk-toggle-slider {
    position: relative;
    width: 2.5rem;
    height: 1.5rem;
    background: var(--fk-stone-200);
    border-radius: 9999px;
    transition: background 0.2s;
}

.fk-toggle-slider::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: calc(1.5rem - 4px);
    height: calc(1.5rem - 4px);
    background: var(--fk-white);
    border-radius: 9999px;
    transition: transform 0.2s;
    box-shadow: var(--fk-shadow-sm);
}

.fk-toggle input:checked+.fk-toggle-slider {
    background: var(--fk-secondary);
}

.fk-toggle input:checked+.fk-toggle-slider::after {
    transform: translateX(1rem);
}

.fk-toggle-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--fk-stone-700);
}

/* Terms and Conditions Checkbox */
.fk-terms-section {
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--fk-stone-50);
    border-radius: var(--fk-radius-md);
    border: 1px solid var(--fk-stone-100);
}

.fk-terms-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    position: relative;
}

.fk-terms-checkbox input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.fk-terms-checkmark {
    flex-shrink: 0;
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid var(--fk-stone-300);
    border-radius: var(--fk-radius-sm);
    background: var(--fk-white);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 0.125rem;
}

.fk-terms-checkmark::after {
    content: '';
    width: 0.375rem;
    height: 0.625rem;
    border: solid var(--fk-white);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) scale(0);
    transition: transform 0.15s ease;
}

.fk-terms-checkbox input:checked+.fk-terms-checkmark {
    background: var(--fk-secondary);
    border-color: var(--fk-secondary);
}

.fk-terms-checkbox input:checked+.fk-terms-checkmark::after {
    transform: rotate(45deg) scale(1);
}

.fk-terms-checkbox input:focus+.fk-terms-checkmark {
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

.fk-terms-text {
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--fk-stone-600);
}

.fk-terms-text a {
    color: var(--fk-secondary);
    text-decoration: underline;
    font-weight: 500;
}

.fk-terms-text a:hover {
    color: var(--fk-stone-900);
}

.fk-terms-text .required {
    color: var(--fk-orange-500);
}

/* Company & Shipping Fields */
.fk-company-fields,
.fk-shipping-fields {
    margin-bottom: 1rem;
    padding: 1rem;
    background: var(--fk-stone-50);
    border-radius: var(--fk-radius-md);
    border: 1px solid var(--fk-stone-100);
}

/* Payment Section */
.fk-payment-section {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--fk-stone-100);
}

.fk-stripe-element {
    min-height: 100px;
    padding: 1rem;
    background: var(--fk-stone-50);
    border-radius: var(--fk-radius-md);
    border: 1px solid var(--fk-stone-200);
}

.fk-stripe-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    color: var(--fk-stone-400);
    padding: 1rem;
}

.fk-stripe-error {
    color: var(--fk-red-500);
    text-align: center;
    padding: 1rem;
}

.fk-payment-errors {
    color: var(--fk-red-500);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: none;
}

/* Spinner */
.fk-spinner {
    animation: fk-spin 1s linear infinite;
}

@keyframes fk-spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* Submit Button */
.fk-submit-btn {
    width: 100%;
    position: relative;
    background: linear-gradient(135deg, rgba(20, 20, 20, 0.95) 0%, rgba(40, 40, 40, 0.98) 100%);
    color: var(--fk-white);
    font-family: var(--fk-font-family);
    font-weight: 600;
    padding: 1rem;
    border-radius: var(--fk-radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-top-color: rgba(255, 255, 255, 0.2);
    cursor: pointer;
    margin-top: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    overflow: hidden;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow:
        0 4px 15px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Glassy shine overlay */
.fk-submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.1),
            transparent);
    transition: left 0.5s ease;
    z-index: 1;
}

/* Animated hue glow effect - Monochrome */
.fk-submit-btn::after {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(45deg,
            #ffffff,
            #666666,
            #000000,
            #666666,
            #ffffff,
            #666666,
            #000000,
            #ffffff);
    background-size: 400% 400%;
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    filter: blur(8px);
    transition: opacity 0.4s ease;
    animation: fk-hue-rotate 3s linear infinite;
}

.fk-submit-btn span,
.fk-submit-btn i,
.fk-submit-btn svg {
    position: relative;
    z-index: 2;
}

.fk-submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    background: linear-gradient(135deg, rgba(30, 30, 30, 0.95) 0%, rgba(50, 50, 50, 0.98) 100%);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow:
        0 8px 25px rgba(0, 0, 0, 0.4),
        0 2px 6px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.25),
        inset 0 -1px 0 rgba(0, 0, 0, 0.2);
}

.fk-submit-btn:hover:not(:disabled)::before {
    left: 100%;
}

.fk-submit-btn:hover:not(:disabled)::after {
    opacity: 0.3;
}

.fk-submit-btn:active:not(:disabled) {
    transform: scale(0.98);
}

.fk-submit-btn:disabled {
    opacity: 0.85;
    cursor: wait;
    pointer-events: none;
    animation: fk-pulse 1.5s ease-in-out infinite;
}

.fk-submit-btn svg {
    width: 1rem;
    height: 1rem;
}

.fk-security-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.625rem;
    color: var(--fk-stone-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 0.5rem;
}

.fk-security-note svg {
    width: 0.75rem;
    height: 0.75rem;
}

.fk-continue-shopping {
    width: 100%;
    margin-top: 1rem;
    padding: 0.75rem;
    color: var(--fk-stone-400);
    font-family: var(--fk-font-family);
    font-weight: 600;
    font-size: 0.875rem;
    background: none;
    border: 1px solid transparent;
    border-radius: var(--fk-radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: var(--fk-transition);
}

.fk-continue-shopping:hover {
    color: var(--fk-stone-800);
    border-color: var(--fk-stone-200);
}

.fk-continue-shopping svg {
    width: 1rem;
    height: 1rem;
    transition: transform 0.2s;
}

.fk-continue-shopping:hover svg {
    transform: scale(1.1);
}

/* =========================================
   Success State - Enhanced with Branding
   ========================================= */
.fk-modal-success {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 1.5rem 0;
    position: relative;
    overflow: hidden;
}

.fk-animate-scale-in {
    animation: fk-scale-in 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fk-scale-in {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Confetti Container */
.fk-confetti-container {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    z-index: 0;
}

.fk-confetti-piece {
    position: absolute;
    top: -20px;
    border-radius: 2px;
    animation: fk-confetti-fall linear forwards;
}

@keyframes fk-confetti-fall {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(400px) rotate(720deg);
        opacity: 0;
    }
}

/* Company Logo */
.fk-success-logo {
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.fk-success-logo-img {
    max-width: 150px;
    max-height: 60px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.fk-success-icon {
    width: 5rem;
    height: 5rem;
    background: var(--fk-emerald-100);
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    box-shadow: inset 0 2px 4px 0 rgb(0 0 0 / 0.05), 0 0 0 4px var(--fk-white);
    position: relative;
    z-index: 1;
    animation: fk-success-pulse 0.6s ease-out;
}

@keyframes fk-success-pulse {
    0% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
    }
}

.fk-success-icon svg {
    width: 2.5rem;
    height: 2.5rem;
    color: var(--fk-emerald-600);
    stroke-width: 3;
}

.fk-success-title {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--fk-stone-900);
    letter-spacing: -0.025em;
    margin: 0 0 0.5rem;
    position: relative;
    z-index: 1;
}

.fk-success-message {
    color: var(--fk-stone-500);
    max-width: 20rem;
    margin: 0 0 1.5rem;
    font-size: 1rem;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

/* Order Summary Card */
.fk-order-summary-card {
    background: var(--fk-stone-50);
    border-radius: var(--fk-radius-lg);
    padding: 1.25rem;
    width: 100%;
    border: 1px solid var(--fk-stone-100);
    margin-bottom: 1.25rem;
    position: relative;
    z-index: 1;
}

.fk-order-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--fk-stone-200);
    margin-bottom: 0.75rem;
}

.fk-order-number-label {
    color: var(--fk-stone-400);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.fk-order-number-value {
    font-family: var(--fk-font-sans);
    font-weight: 700;
    font-size: 1rem;
    color: var(--fk-stone-900);
}

/* Order Items */
.fk-order-items {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.fk-order-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    padding: 0.5rem 0;
    border-bottom: 1px dashed var(--fk-stone-200);
}

.fk-order-item:last-child {
    border-bottom: none;
}

.fk-order-item-name {
    flex: 1;
    color: var(--fk-stone-700);
    text-align: left;
}

.fk-order-item-qty {
    color: var(--fk-stone-400);
    font-size: 0.75rem;
}

.fk-order-item-price {
    color: var(--fk-stone-900);
    font-weight: 600;
    font-family: var(--fk-font-sans);
}

/* Order Total */
.fk-order-total-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 0.75rem;
    border-top: 2px solid var(--fk-stone-200);
}

.fk-order-total-label {
    color: var(--fk-stone-600);
    font-weight: 600;
    font-size: 0.875rem;
}

.fk-order-total-value {
    color: var(--fk-stone-900);
    font-weight: 700;
    font-size: 1.25rem;
    font-family: var(--fk-font-sans);
}

/* Email Note */
.fk-email-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--fk-stone-400);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.fk-email-note svg {
    width: 1rem;
    height: 1rem;
}

/* Close/Continue Button */
.fk-close-btn {
    width: 100%;
    background: var(--fk-stone-900);
    color: var(--fk-white);
    font-family: var(--fk-font-family);
    font-weight: 600;
    padding: 1rem;
    border-radius: var(--fk-radius-md);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.fk-close-btn:hover {
    background: var(--fk-stone-800);
    transform: translateY(-1px);
}

.fk-close-btn svg {
    width: 1.25rem;
    height: 1.25rem;
}

.fk-continue-btn {
    background: linear-gradient(135deg, rgba(20, 20, 20, 0.95) 0%, rgba(40, 40, 40, 0.98) 100%);
}

.fk-continue-btn:hover {
    background: linear-gradient(135deg, rgba(30, 30, 30, 0.98) 0%, rgba(50, 50, 50, 1) 100%);
    transform: translateY(-1px);
}

/* =========================================
   Sticky Footer Mini Cart
   ========================================= */
.fk-footer-cart {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--fk-stone-200);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
    z-index: 9990;
    transform: translateY(100%);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
    pointer-events: none;
}

.fk-footer-cart.fk-footer-cart-visible {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.fk-footer-cart-inner {
    max-width: 90rem;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

@media (min-width: 768px) {
    .fk-footer-cart-inner {
        padding: 1rem 2rem;
    }
}

.fk-footer-cart-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.fk-footer-cart-badge {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    background: var(--fk-secondary);
    border-radius: var(--fk-radius-md);
    color: var(--fk-white);
}

.fk-footer-cart-badge svg {
    width: 1.25rem;
    height: 1.25rem;
}

.fk-footer-cart-count {
    position: absolute;
    top: -0.375rem;
    right: -0.375rem;
    min-width: 1.25rem;
    height: 1.25rem;
    padding: 0 0.375rem;
    background: var(--fk-orange-500);
    color: var(--fk-white);
    font-size: 0.75rem;
    font-weight: 700;
    font-family: var(--fk-font-sans);
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.fk-footer-cart-summary {
    display: flex;
    flex-direction: column;
}

.fk-footer-cart-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--fk-stone-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.fk-footer-cart-total {
    font-size: 1.25rem;
    font-weight: 700;
    font-family: var(--fk-font-sans);
    color: var(--fk-stone-900);
    letter-spacing: -0.025em;
}

@media (min-width: 640px) {
    .fk-footer-cart-total {
        font-size: 1.5rem;
    }
}

.fk-footer-cart-btn {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    background: linear-gradient(135deg, rgba(20, 20, 20, 0.95) 0%, rgba(40, 40, 40, 0.98) 100%);
    color: var(--fk-white);
    font-family: var(--fk-font-family);
    font-weight: 600;
    font-size: 0.875rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-top-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--fk-radius-lg);
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow:
        0 4px 15px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Glassy shine overlay */
.fk-footer-cart-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.1),
            transparent);
    transition: left 0.5s ease;
}

.fk-footer-cart-btn:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, rgba(30, 30, 30, 0.95) 0%, rgba(50, 50, 50, 0.98) 100%);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow:
        0 8px 25px rgba(0, 0, 0, 0.4),
        0 2px 6px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.25),
        inset 0 -1px 0 rgba(0, 0, 0, 0.2);
}

/* Animated hue glow effect - Monochrome */
.fk-footer-cart-btn::after {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(45deg,
            #ffffff,
            #666666,
            #000000,
            #666666,
            #ffffff,
            #666666,
            #000000,
            #ffffff);
    background-size: 400% 400%;
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    filter: blur(8px);
    transition: opacity 0.4s ease;
    animation: fk-hue-rotate 3s linear infinite;
}

@keyframes fk-hue-rotate {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

.fk-footer-cart-btn:hover::before {
    left: 100%;
}

.fk-footer-cart-btn:hover::after {
    opacity: 0.3;
    /* Reduced opacity for subtle effect */
}

.fk-footer-cart-btn:active {
    transform: scale(0.98) translateY(0);
}

.fk-footer-cart-btn svg {
    width: 1rem;
    height: 1rem;
    stroke-width: 2;
    position: relative;
    z-index: 1;
}

.fk-footer-cart-btn span {
    position: relative;
    z-index: 1;
}

@media (min-width: 640px) {
    .fk-footer-cart-btn {
        padding: 1rem 2rem;
        font-size: 1rem;
    }
}