/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - Delhi Boutique Aesthetic */
    --primary-color: #1a1a1a;
    --secondary-color: #5a5a5a;
    --accent-color: #25d366;
    /* WhatsApp green */
    --background: #fefefe;
    --card-background: #ffffff;
    --border-color: #e8e8e8;
    --sold-badge: #a0a0a0;
    --text-primary: #2a2a2a;
    --text-secondary: #6a6a6a;
    --hover-shadow: rgba(0, 0, 0, 0.06);
    --card-hover-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
}

/* Keyframe Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }

    50% {
        opacity: 1;
        transform: scale(1.05);
    }

    70% {
        transform: scale(0.9);
    }

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

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }

    100% {
        background-position: 1000px 0;
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.8;
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px) translateZ(0px);
    }

    50% {
        transform: translateY(-10px) translateZ(20px);
    }
}

@keyframes rotate3d {
    0% {
        transform: rotateY(0deg) rotateX(0deg);
    }

    100% {
        transform: rotateY(360deg) rotateX(360deg);
    }
}

@keyframes floatSlow {

    0%,
    100% {
        transform: translateY(0px) translateZ(0px) rotateZ(0deg);
    }

    33% {
        transform: translateY(-8px) translateZ(15px) rotateZ(1deg);
    }

    66% {
        transform: translateY(-4px) translateZ(8px) rotateZ(-1deg);
    }
}

html {
    scroll-behavior: smooth;
    perspective: 1000px;
}

body {
    font-family: 'Playfair Display', 'Georgia', 'Times New Roman', serif;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--background);
    padding-bottom: 4rem;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    transform-style: preserve-3d;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2.5rem;
    transform-style: preserve-3d;
}

/* Header Styles */
header {
    background: linear-gradient(180deg, #fefefe 0%, #f8f6f4 100%);
    border-bottom: 1px solid var(--border-color);
    padding: 4rem 0 3.5rem;
    text-align: center;
    margin-bottom: 4.5rem;
    animation: fadeIn 0.8s ease-out, floatSlow 6s ease-in-out infinite;
    position: sticky;
    top: 0;
    z-index: 50;
    transition: all 0.3s ease;
    transform-style: preserve-3d;
}

header.scrolled {
    padding: 1.5rem 0;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08), 0 8px 24px rgba(0, 0, 0, 0.04);
    backdrop-filter: blur(10px);
    background: linear-gradient(180deg, rgba(254, 254, 254, 0.95) 0%, rgba(248, 246, 244, 0.95) 100%);
}

/* Logo + Brand Layout */
.header-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 1rem;
    transition: all 0.4s ease;
}

.site-title {
    margin: 0;
    line-height: 1;
    display: flex;
    justify-content: center;
    transition: all 0.4s ease;
}

.header-logo {
    width: clamp(160px, 28vw, 280px);
    height: auto;
    display: block;
    object-fit: contain;
    animation: scaleIn 0.6s ease-out 0.2s both;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease, filter 0.3s ease, width 0.4s ease;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.05));
    transform-style: preserve-3d;
}

.header-logo:hover {
    transform: scale(1.05) rotateY(5deg) rotateX(5deg) translateZ(20px);
    filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.1));
}

/* Scrolled state - fade out logo and subtitle */
header.scrolled .header-logo {
    opacity: 0;
    transform: scale(0.8) translateY(-10px);
    width: 0;
    height: 0;
    margin: 0;
}

header.scrolled .site-title {
    margin: 0;
    height: 0;
    overflow: hidden;
}

header.scrolled .subtitle {
    opacity: 0;
    transform: translateY(-10px);
    height: 0;
    margin: 0;
    padding: 0;
}

header h1 {
    font-size: 3rem;
    font-weight: 400;
    letter-spacing: 3px;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-family: 'Playfair Display', serif;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 300;
    letter-spacing: 2px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    text-transform: none;
    animation: fadeInUp 0.8s ease-out 0.4s both;
    padding-bottom: 1rem;
    position: relative;
}

.subtitle::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

/* Filter Buttons */
.filter-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 4.5rem;
    animation: fadeInUp 0.6s ease-out 0.6s both;
}

.filter-btn {
    padding: 0.875rem 2rem;
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 300;
    letter-spacing: 1.5px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-transform: uppercase;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    border-radius: 999px;
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(26, 26, 26, 0.05), transparent);
    transition: left 0.5s ease;
}

.filter-btn:hover::before {
    left: 100%;
}

.filter-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background-color: transparent;
    transform: translateY(-4px) translateZ(10px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12), 0 4px 8px rgba(0, 0, 0, 0.08);
}

.filter-btn.active {
    background-color: var(--primary-color);
    color: var(--background);
    border-color: var(--primary-color);
    transform: scale(1.05) translateZ(15px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2), 0 3px 10px rgba(0, 0, 0, 0.1);
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 3rem;
    margin-bottom: 4rem;
}

/* Product Card */
.product-card {
    background-color: var(--card-background);
    border: none;
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s ease, opacity 0.3s ease;
    position: relative;
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
    border-radius: 12px;
    transform-style: preserve-3d;
    perspective: 1000px;
    will-change: transform;
}

.product-card:hover {
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.15),
        0 10px 30px rgba(0, 0, 0, 0.1),
        0 5px 15px rgba(0, 0, 0, 0.05);
    transform: translateY(-12px) translateZ(30px);
}

.product-card:not(.sold):hover {
    transform: translateY(-12px) translateZ(30px) rotateX(2deg);
}

.product-image-container {
    position: relative;
    width: 100%;
    padding-top: 125%;
    /* 4:5 aspect ratio */
    overflow: hidden;
    background-color: #f8f8f8;
    border-radius: 12px 12px 0 0;
    transform-style: preserve-3d;
}

.product-image-container::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 200%;
    animation: shimmer 1.5s infinite;
    z-index: 1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.product-image-container.loading::before {
    opacity: 1;
}

.product-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease, filter 0.3s ease;
    transform-style: preserve-3d;
    will-change: transform;
}

.product-card:not(.sold):hover .product-image {
    opacity: 0.98;
    transform: scale(1.12) translateZ(20px) rotateZ(-1deg);
    filter: brightness(1.08) contrast(1.05);
}

/* Quick View Overlay */
.product-image-container::after {
    content: 'Quick View';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26, 26, 26, 0.85), rgba(26, 26, 26, 0.7));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 400;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    opacity: 0;
    transition: opacity 0.3s ease, backdrop-filter 0.3s ease;
    z-index: 3;
    backdrop-filter: blur(4px);
    transform: translateZ(25px);
}

.product-card:not(.sold):hover .product-image-container::after {
    opacity: 1;
    backdrop-filter: blur(8px);
}

/* Sold Out Badge */
.sold-badge {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background-color: rgba(160, 160, 160, 0.95);
    color: var(--background);
    padding: 0.5rem 1.25rem;
    font-size: 0.7rem;
    font-weight: 400;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    z-index: 2;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    animation: pulse 2s ease-in-out infinite, float 3s ease-in-out infinite;
    transform: translateZ(40px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2), 0 2px 6px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(4px);
}

/* Product Info */
.product-info {
    padding: 2rem 1.75rem 2.25rem;
}

.product-category {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 0.5rem;
    font-weight: 400;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.product-name {
    font-size: 1.15rem;
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: 0.5px;
    line-height: 1.5;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.product-price {
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    margin-top: 0.75rem;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    letter-spacing: 0.5px;
}

/* WhatsApp Button */
.whatsapp-btn {
    width: 100%;
    padding: 1rem;
    background-color: var(--accent-color);
    color: var(--background);
    border: none;
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 1.5px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-transform: uppercase;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transform-style: preserve-3d;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3), 0 2px 6px rgba(37, 211, 102, 0.2);
}

.whatsapp-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.whatsapp-btn:hover::before {
    width: 300px;
    height: 300px;
}

.whatsapp-btn:hover {
    background-color: #22c55e;
    transform: translateY(-3px) translateZ(15px) scale(1.03);
    box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4), 0 4px 12px rgba(37, 211, 102, 0.3);
}

.whatsapp-btn:active {
    transform: translateY(-1px) translateZ(8px) scale(1.01);
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.25), 0 2px 6px rgba(37, 211, 102, 0.2);
}

/* Disabled State for Sold Items */
.product-card.sold .whatsapp-btn {
    background-color: var(--sold-badge);
    cursor: not-allowed;
    opacity: 0.5;
    text-decoration: line-through;
}

.product-card.sold .product-image {
    opacity: 0.4;
    filter: grayscale(100%);
}

/* Back to top */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3.5rem;
    height: 3.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color);
    color: var(--background);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow:
        0 8px 24px rgba(0, 0, 0, 0.2),
        0 4px 12px rgba(0, 0, 0, 0.15),
        0 2px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) translateZ(0);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    transform-style: preserve-3d;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) translateZ(20px);
    animation: float 3s ease-in-out infinite;
}

.back-to-top:hover {
    transform: scale(1.2) translateY(-5px) translateZ(30px);
    box-shadow:
        0 12px 36px rgba(0, 0, 0, 0.25),
        0 6px 18px rgba(0, 0, 0, 0.2),
        0 3px 9px rgba(0, 0, 0, 0.15);
}

.back-to-top:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 2.75rem;
        height: 2.75rem;
        font-size: 1.1rem;
    }
}

/* Footer */
footer {
    margin-top: 5rem;
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
    background: linear-gradient(180deg, #fefefe 0%, #f8f6f4 100%);
}

footer p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    letter-spacing: 1px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-weight: 300;
    margin-bottom: 0.5rem;
}

.footer-whatsapp {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-color);
    text-decoration: none;
    font-size: 0.9rem;
    margin-top: 1rem;
    transition: opacity 0.3s ease;
}

.footer-whatsapp:hover {
    opacity: 0.8;
}

/* Tablet Responsive (768px - 1024px) */
@media (max-width: 1024px) and (min-width: 769px) {
    .container {
        padding: 0 2rem;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 2.5rem;
    }

    .filter-btn {
        padding: 0.8rem 1.75rem;
        font-size: 0.825rem;
    }
}

/* Mobile Responsive (481px - 768px) */
@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }

    .header-brand {
        gap: 0.75rem;
    }

    .header-logo {
        width: clamp(140px, 50vw, 220px);
    }

    header {
        padding: 3rem 0 2.5rem;
        margin-bottom: 3.5rem;
    }

    header.scrolled {
        padding: 1.25rem 0;
    }

    header h1 {
        font-size: 2.25rem;
        letter-spacing: 2px;
    }

    .subtitle {
        font-size: 0.95rem;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 2rem;
    }

    .filter-container {
        gap: 0.75rem;
        margin-bottom: 3.5rem;
    }

    .filter-btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.8rem;
    }

    .product-info {
        padding: 1.75rem 1.5rem 2rem;
    }

    .product-category {
        font-size: 0.7rem;
    }

    .product-name {
        font-size: 1.05rem;
    }

    .product-price {
        font-size: 1.2rem;
        margin-bottom: 1.25rem;
    }

    .whatsapp-btn {
        padding: 0.9rem;
        font-size: 0.8rem;
    }

    .back-to-top {
        width: 3rem;
        height: 3rem;
        bottom: 1.5rem;
        right: 1.5rem;
        font-size: 1.3rem;
    }

    /* Reduce 3D effects on tablets for performance */
    .product-card:hover {
        transform: translateY(-8px) translateZ(15px);
        box-shadow:
            0 12px 40px rgba(0, 0, 0, 0.12),
            0 6px 20px rgba(0, 0, 0, 0.08);
    }

    .product-card:not(.sold):hover {
        transform: translateY(-8px) translateZ(15px);
    }
}

/* Small Mobile (320px - 480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    header {
        padding: 2rem 0 1.5rem;
        margin-bottom: 2.5rem;
    }

    header.scrolled {
        padding: 1rem 0;
    }

    header h1 {
        font-size: 1.875rem;
        letter-spacing: 1.5px;
    }

    .header-logo {
        width: clamp(120px, 60vw, 180px);
    }

    .subtitle {
        font-size: 0.85rem;
        letter-spacing: 1.5px;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.25rem;
    }

    .filter-container {
        margin-bottom: 2.5rem;
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.75rem;
        letter-spacing: 1px;
    }

    .product-info {
        padding: 1.25rem 1rem 1.5rem;
    }

    .product-category {
        font-size: 0.65rem;
        margin-bottom: 0.4rem;
    }

    .product-name {
        font-size: 0.95rem;
        padding-bottom: 0.5rem;
    }

    .product-price {
        font-size: 1.1rem;
        margin-top: 0.5rem;
        margin-bottom: 1rem;
    }

    .whatsapp-btn {
        padding: 0.85rem 0.75rem;
        font-size: 0.75rem;
        letter-spacing: 1px;
    }

    .whatsapp-btn svg {
        width: 14px;
        height: 14px;
    }

    .back-to-top {
        width: 2.75rem;
        height: 2.75rem;
        bottom: 1.25rem;
        right: 1.25rem;
        font-size: 1.2rem;
    }

    .back-to-top svg {
        width: 20px;
        height: 20px;
    }

    footer {
        margin-top: 3rem;
        padding: 2rem 0;
    }

    footer p {
        font-size: 0.8rem;
    }

    .footer-whatsapp {
        font-size: 0.85rem;
    }

    /* Simplify 3D effects for mobile performance */
    html {
        perspective: 800px;
    }

    .product-card {
        perspective: 800px;
    }

    .product-card:hover {
        transform: translateY(-6px) translateZ(10px);
        box-shadow:
            0 8px 24px rgba(0, 0, 0, 0.1),
            0 4px 12px rgba(0, 0, 0, 0.08);
    }

    .product-card:not(.sold):hover {
        transform: translateY(-6px) translateZ(10px);
    }

    .product-card:not(.sold):hover .product-image {
        transform: scale(1.08) translateZ(10px);
    }

    .filter-btn:hover {
        transform: translateY(-2px) translateZ(5px);
    }

    .whatsapp-btn:hover {
        transform: translateY(-2px) translateZ(8px) scale(1.02);
    }

    .back-to-top:hover {
        transform: scale(1.1) translateY(-3px) translateZ(15px);
    }

    /* Disable mouse tracking on mobile */
    .product-card {
        will-change: auto;
    }
}

/* Accessibility - Focus States */
.filter-btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 3px;
}

.whatsapp-btn:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.back-to-top:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 3px;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .product-card:hover {
        transform: none !important;
    }

    .filter-btn:hover {
        transform: translateY(-2px) !important;
    }

    .whatsapp-btn:hover {
        transform: translateY(-2px) !important;
    }

    .back-to-top:hover {
        transform: scale(1.1) !important;
    }

    .header-logo:hover {
        transform: scale(1.05) !important;
    }

    /* Disable 3D transforms */
    html,
    body,
    .container,
    .product-card,
    .product-image-container,
    .product-image,
    .filter-btn,
    .whatsapp-btn,
    .back-to-top {
        perspective: none !important;
        transform-style: flat !important;
    }
}