/* ==========================================================================
   RAJ STONES – Design System
   Material inspiration: Hand-polished granite meets Swiss precision
   ========================================================================== */

:root {
    /* Color System - Inspired by natural stone */
    --stone-black: #0a0a0a;
    --stone-charcoal: #1a1a1a;
    --stone-slate: #2a2a2a;
    --stone-grey: #666666;
    --stone-silver: #a0a0a0;
    --stone-cloud: #e5e5e5;
    --stone-white: #fafafa;
    --stone-blue: #4a90e2;
    --stone-gold: #d4a574;
    --stone-green: #3d5a46;

    /* Typography Scale */
    --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    --font-display: "SF Pro Display", var(--font-system);
    --font-body: var(--font-system);

    /* MOBILE FIRST Typography */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 0.9375rem;
    --text-lg: 1rem;
    --text-xl: 1.125rem;
    --text-2xl: 1.25rem;
    --text-3xl: 1.5rem;
    --text-4xl: 2rem;
    --text-5xl: 2.5rem;
    --text-6xl: 3rem;

    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-8: 3rem;
    --space-10: 4rem;
    --space-12: 6rem;
    --space-16: 8rem;

    /* Layout - MOBILE FIRST */
    --container-max: 1280px;
    --container-padding: var(--space-4);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Elevation */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--stone-slate);
    background: var(--stone-white);
    padding-bottom: 80px; /* Space for mobile bottom nav */
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(250, 250, 250, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--stone-cloud);
}

.nav__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-4) var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 600;
    font-size: var(--text-lg);
}

.nav__logo-symbol {
    font-size: var(--text-2xl);
    color: var(--stone-black);
}

.nav__menu {
    display: none; /* Hidden on mobile */
    gap: var(--space-4);
    list-style: none;
}

.nav__menu a {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--stone-grey);
    transition: color var(--transition-fast);
    letter-spacing: 0.02em;
}

.nav__menu a:hover {
    color: var(--stone-black);
}

.nav__cta {
    padding: var(--space-2) var(--space-5);
    background: var(--stone-black);
    color: var(--stone-white) !important;
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.nav__cta:hover {
    background: var(--stone-slate);
    transform: translateY(-1px);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    padding: calc(60px + var(--space-6)) var(--container-padding) var(--space-8);
    background: linear-gradient(135deg, var(--stone-white) 0%, #f0f0f0 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, transparent 0%, rgba(0,0,0,0.02) 100%);
    pointer-events: none;
}

.hero__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-8) var(--container-padding);
    display: grid;
    grid-template-columns: 1fr; /* Mobile: single column */
    gap: var(--space-6);
    align-items: center;
}

.hero__label {
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--stone-grey);
    margin-bottom: var(--space-4);
}

.hero__title {
    font-size: var(--text-6xl);
    font-weight: 700;
    line-height: 1.1;
    color: var(--stone-black);
    margin-bottom: var(--space-5);
    letter-spacing: -0.02em;
}

.hero__title-accent {
    display: block;
    background: linear-gradient(135deg, var(--stone-blue) 0%, var(--stone-green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__description {
    font-size: var(--text-xl);
    line-height: 1.7;
    color: var(--stone-grey);
    margin-bottom: var(--space-8);
    max-width: 540px;
}

.hero__actions {
    display: flex;
    flex-direction: column; /* Mobile: stacked buttons */
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.hero__stats {
    display: grid;
    grid-template-columns: 1fr; /* Mobile: single column */
    gap: var(--space-4);
    padding-top: var(--space-6);
    border-top: 1px solid var(--stone-cloud);
}

.stat__number {
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--stone-black);
    line-height: 1;
    margin-bottom: var(--space-2);
}

.stat__label {
    font-size: var(--text-sm);
    color: var(--stone-grey);
    letter-spacing: 0.02em;
}

/* Stone Showcase */

.stone-showcase {
    display: grid;
    grid-template-columns: 1fr; /* Mobile: single column */
    gap: var(--space-4);
    height: auto; /* Mobile: auto height */
}

.stone-showcase__primary {
    position: relative;
}

.stone-card {
    height: 100%;
    background: var(--stone-charcoal);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-xl);
}

.stone-card__texture {
    position: absolute;
    inset: 0;
}

.stone-card__info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-6);
    background: linear-gradient(to top, rgba(10, 10, 10, 0.9), transparent);
    color: var(--stone-white);
}

.stone-card__info h3 {
    font-size: var(--text-2xl);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.stone-card__info p {
    font-size: var(--text-sm);
    color: var(--stone-silver);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.stone-showcase__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* Mobile: 2 columns */
    gap: var(--space-4);
}

.stone-thumbnail {
    background: var(--stone-slate);
    border-radius: 8px;
    transition: transform var(--transition-fast);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.stone-thumbnail::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, transparent 100%);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.stone-thumbnail:hover {
    transform: translateX(-4px);
}

.stone-thumbnail:hover::before {
    opacity: 1;
}

/* Thumbnail backgrounds removed - using real images now */

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    padding: var(--space-4) var(--space-6);
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: 8px;
    transition: all var(--transition-fast);
    letter-spacing: 0.01em;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%; /* Mobile: full width */
}

.btn--primary {
    background: var(--stone-black);
    color: var(--stone-white);
}

.btn--primary:hover {
    background: var(--stone-slate);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background: transparent;
    color: var(--stone-black);
    border: 2px solid var(--stone-cloud);
}

.btn--secondary:hover {
    border-color: var(--stone-black);
}

.btn--full {
    width: 100%;
}

/* ==========================================================================
   Sections
   ========================================================================== */

.section__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-16) var(--container-padding);
}

.section__header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section__title {
    font-size: var(--text-5xl);
    font-weight: 700;
    color: var(--stone-black);
    margin-bottom: var(--space-4);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.section__subtitle {
    font-size: var(--text-xl);
    color: var(--stone-grey);
}

/* ==========================================================================
   Materials Section
   ========================================================================== */

.materials {
    background: var(--stone-white);
}

.material-filter {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
    margin-bottom: var(--space-10);
}

.filter-btn {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--stone-grey);
    background: transparent;
    border: 2px solid var(--stone-cloud);
    border-radius: 6px;
    transition: all var(--transition-fast);
    letter-spacing: 0.02em;
}

.filter-btn:hover {
    border-color: var(--stone-black);
    color: var(--stone-black);
}

.filter-btn.active {
    background: var(--stone-black);
    color: var(--stone-white);
    border-color: var(--stone-black);
}

/* ==========================================================================
   Product Grid (GANGSAW, BLOCKS, SLABS, TILES, COBBLES)
   ========================================================================== */

.product-grid {
    display: grid;
    grid-template-columns: 1fr; /* Mobile: single column */
    gap: var(--space-6);
    margin-top: var(--space-8);
}

.product-card {
    background: var(--stone-white);
    border: 2px solid var(--stone-cloud);
    border-radius: 16px;
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--stone-blue);
}

.product-card__image {
    height: 280px;
    background: var(--stone-slate);
    position: relative;
    overflow: hidden;
}

.product-card__image picture {
    position: absolute;
    inset: 0;
    display: block;
}

.product-card__image picture img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-card__content {
    padding: var(--space-6);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-card__name {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--stone-black);
    margin-bottom: var(--space-3);
    letter-spacing: 0.02em;
}

.product-card__description {
    font-size: var(--text-sm);
    color: var(--stone-grey);
    line-height: 1.7;
    margin-bottom: var(--space-4);
}

.product-card__finishes {
    font-size: var(--text-xs);
    color: var(--stone-grey);
    margin-bottom: var(--space-4);
    padding: var(--space-3);
    background: var(--stone-cloud);
    border-radius: 6px;
}

.product-card__finishes-label {
    font-weight: 600;
    color: var(--stone-black);
}

.product-card__pricing {
    margin-top: auto;
    padding-top: var(--space-5);
    border-top: 2px solid var(--stone-cloud);
}

.product-card__pricing-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.product-card__price-item {
    display: flex;
    flex-direction: column;
    padding: var(--space-3);
    background: rgba(74, 144, 226, 0.05);
    border-radius: 8px;
}

.product-card__grade {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--stone-grey);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-1);
}

.product-card__price {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--stone-black);
}

.product-card__price-single {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--stone-black);
    text-align: center;
    padding: var(--space-3);
}

.product-card__use-case {
    margin-top: var(--space-4);
    font-size: var(--text-sm);
    color: var(--stone-grey);
}

.product-card__use-case strong {
    color: var(--stone-black);
}

.material-grid {
    display: grid;
    grid-template-columns: 1fr; /* Mobile: single column */
    gap: var(--space-4);
}

.material-card {
    background: var(--stone-white);
    border: 1px solid var(--stone-cloud);
    border-radius: 12px;
    overflow: hidden;
    transition: all var(--transition-base);
}

.material-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--stone-black);
}

.material-card__image {
    height: 240px;
    background: var(--stone-slate);
    position: relative;
    overflow: hidden;
}

.material-card__content {
    padding: var(--space-5);
}

.material-card__name {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--stone-black);
    margin-bottom: var(--space-2);
}

.material-card__type {
    font-size: var(--text-sm);
    color: var(--stone-grey);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.material-card__description {
    font-size: var(--text-sm);
    color: var(--stone-grey);
    line-height: 1.6;
    margin-bottom: var(--space-5);
}

.material-card__pricing {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-4);
    border-top: 1px solid var(--stone-cloud);
}

.material-card__price {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--stone-black);
}

.material-card__price-label {
    font-size: var(--text-xs);
    color: var(--stone-grey);
    display: block;
}

/* ==========================================================================
   Quality Section
   ========================================================================== */

.quality {
    background: var(--stone-charcoal);
    color: var(--stone-white);
}

.quality .section__title,
.quality .section__subtitle {
    color: var(--stone-white);
}

.quality__content {
    display: grid;
    grid-template-columns: 1fr; /* Mobile: single column stack */
    gap: var(--space-6);
    align-items: stretch;
    margin-top: var(--space-8);
}

.quality__grades {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

.grade-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: var(--space-6);
    transition: all var(--transition-base);
}

.grade-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateX(4px);
}

.grade-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
}

.grade-card__badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: var(--stone-blue);
    color: var(--stone-white);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 4px;
}

.grade-card__badge--alt {
    background: var(--stone-gold);
}

.grade-card__price {
    font-size: var(--text-sm);
    color: var(--stone-silver);
}

.grade-card__description {
    color: var(--stone-silver);
    line-height: 1.7;
    margin-bottom: var(--space-5);
}

.grade-card__features {
    list-style: none;
    display: grid;
    gap: var(--space-3);
}

.grade-card__features li {
    padding-left: var(--space-5);
    position: relative;
    color: var(--stone-silver);
    font-size: var(--text-sm);
}

.grade-card__features li::before {
    content: '◆';
    position: absolute;
    left: 0;
    color: var(--stone-blue);
    font-size: var(--text-xs);
}

/* Comparison Viewer */

.comparison-viewer {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: var(--space-6);
}

.comparison-viewer__label {
    font-size: var(--text-sm);
    color: var(--stone-silver);
    margin-bottom: var(--space-4);
    text-align: center;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.comparison-viewer__frame {
    position: relative;
    height: 400px;
    background: var(--stone-slate);
    border-radius: 8px;
    overflow: hidden;
}

.comparison-viewer__image {
    position: absolute;
    inset: 0;
}

.comparison-viewer__image picture {
    position: absolute;
    inset: 0;
    display: block;
}

.comparison-viewer__image picture img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.comparison-viewer__image--before {
    z-index: 1;
}

.comparison-viewer__image--after {
    clip-path: inset(0 0 0 50%);
    z-index: 2;
}

.comparison-viewer__slider {
    position: absolute;
    inset: 0;
    z-index: 3;
    pointer-events: none;
}

.comparison-viewer__input {
    display: none;
}

.comparison-viewer__handle {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 44px;
    pointer-events: auto;
    cursor: ew-resize;
    transform: translateX(-50%);
    touch-action: none;
    z-index: 10;
}

.comparison-viewer__handle::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--stone-white);
    transform: translateX(-50%);
    pointer-events: none;
}

.comparison-viewer__handle::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: var(--stone-white);
    border-radius: 50%;
    pointer-events: none;
}

.comparison-viewer__labels {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-4);
    font-size: var(--text-sm);
    color: var(--stone-silver);
}

/* ==========================================================================
   Pricing Section
   ========================================================================== */

.pricing {
    background: var(--stone-white);
}

.pricing__selector {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
    margin-bottom: var(--space-10);
}

.pricing__tab {
    padding: var(--space-4) var(--space-6);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--stone-grey);
    background: transparent;
    border: 2px solid var(--stone-cloud);
    border-radius: 8px;
    transition: all var(--transition-fast);
}

.pricing__tab:hover {
    border-color: var(--stone-black);
    color: var(--stone-black);
}

.pricing__tab.active {
    background: var(--stone-black);
    color: var(--stone-white);
    border-color: var(--stone-black);
}

.pricing__table {
    overflow-x: auto;
    margin-bottom: var(--space-6);
}

.pricing-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-sm);
}

.pricing-table thead {
    background: var(--stone-charcoal);
    color: var(--stone-white);
}

.pricing-table th {
    padding: var(--space-4) var(--space-5);
    text-align: left;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: var(--text-xs);
}

.pricing-table td {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--stone-cloud);
}

.pricing-table tbody tr:hover {
    background: rgba(0, 0, 0, 0.02);
}

.pricing__note {
    background: rgba(74, 144, 226, 0.05);
    border-left: 4px solid var(--stone-blue);
    padding: var(--space-5);
    border-radius: 4px;
    font-size: var(--text-sm);
    color: var(--stone-grey);
    line-height: 1.6;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

.contact {
    background: var(--stone-white);
}

.contact__content {
    display: grid;
    grid-template-columns: 1fr; /* Mobile: single column */
    gap: var(--space-6);
}

.contact__description {
    font-size: var(--text-lg);
    color: var(--stone-grey);
    line-height: 1.7;
    margin-bottom: var(--space-8);
}

.contact__details {
    display: grid;
    gap: var(--space-6);
}

.contact__detail {
    display: flex;
    gap: var(--space-4);
}

.contact__detail-icon {
    width: 48px;
    height: 48px;
    background: var(--stone-black);
    color: var(--stone-white);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--text-xl);
    flex-shrink: 0;
}

.contact__detail-icon--whatsapp {
    background: #25D366;
    color: var(--stone-white);
}

.contact__detail-label {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--stone-grey);
    margin-bottom: var(--space-2);
}

.contact__detail-text a {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--stone-black);
    transition: color var(--transition-fast);
}

.contact__detail-text a:hover {
    color: var(--stone-blue);
}

/* Form Styles */

.contact__form {
    background: var(--stone-white);
    border: 1px solid var(--stone-cloud);
    border-radius: 12px;
    padding: var(--space-8);
}

.form__group {
    margin-bottom: var(--space-5);
}

.form__label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--stone-black);
    margin-bottom: var(--space-2);
}

.form__input {
    width: 100%;
    padding: var(--space-4);
    font-size: var(--text-base);
    font-family: inherit;
    color: var(--stone-black);
    background: var(--stone-white);
    border: 2px solid var(--stone-cloud);
    border-radius: 8px;
    transition: all var(--transition-fast);
}

.form__input:focus {
    outline: none;
    border-color: var(--stone-black);
}

.form__input::placeholder {
    color: var(--stone-silver);
}

textarea.form__input {
    resize: vertical;
    min-height: 120px;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
    background: var(--stone-black);
    color: var(--stone-silver);
    padding: var(--space-12) var(--container-padding);
}

.footer__container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.footer__content {
    display: flex;
    flex-direction: column; /* Mobile: stacked */
    justify-content: space-between;
    align-items: center;
    gap: var(--space-6);
    text-align: center;
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 600;
    font-size: var(--text-lg);
    color: var(--stone-white);
    margin-bottom: var(--space-2);
}

.footer__logo-symbol {
    font-size: var(--text-2xl);
}

.footer__tagline {
    font-size: var(--text-sm);
}

.footer__legal {
    font-size: var(--text-sm);
}

/* ==========================================================================
   Responsive Design - MOBILE FIRST
   ========================================================================== */

/* TABLET: 640px+ */
@media (min-width: 640px) {
    :root {
        --text-base: 1rem;
        --text-lg: 1.125rem;
        --text-xl: 1.25rem;
        --text-2xl: 1.5rem;
        --text-3xl: 2rem;
        --text-4xl: 2.5rem;
        --text-5xl: 3.5rem;
        --text-6xl: 4.5rem;
        --container-padding: var(--space-6);
    }

    .hero__stats {
        grid-template-columns: repeat(3, 1fr);
    }

    .footer__content {
        flex-direction: row;
        text-align: left;
    }

    .hero__actions {
        flex-direction: row;
    }

    .btn {
        width: auto;
    }
}

/* TABLET LANDSCAPE: 768px+ */
@media (min-width: 768px) {
    body {
        padding-bottom: 0; /* Remove mobile bottom nav spacing */
    }

    .stone-showcase {
        grid-template-columns: 1fr 0.8fr;
        height: 500px;
    }

    .stone-showcase__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .nav__menu {
        display: flex;
    }

    .product-grid {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: var(--space-8);
    }
}

/* DESKTOP: 968px+ */
@media (min-width: 968px) {
    .hero {
        padding: calc(70px + var(--space-6)) var(--container-padding) var(--space-8);
    }

    .hero__container {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-12);
        padding: 0;
    }

    .contact__content {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-12);
    }
}

/* LARGE DESKTOP: 1120px+ */
@media (min-width: 1120px) {
    .quality__content {
        grid-template-columns: 1fr 1fr; /* 2-column: Cards Stack | Comparison */
        gap: var(--space-8);
        align-items: start; /* Align to top */
    }
}

/* EXTRA LARGE DESKTOP: 1280px+ */
@media (min-width: 1280px) {
    .contact__content {
        grid-template-columns: 1fr 1.5fr;
    }

    .stone-showcase {
        grid-template-columns: 2fr 1fr;
        height: 600px;
    }

    .stone-showcase__grid {
        grid-template-columns: 1fr;
    }

    .nav__menu {
        gap: var(--space-8);
    }

    .material-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: var(--space-6);
    }

    .hero__stats {
        gap: var(--space-8);
        padding-top: var(--space-8);
    }

    .hero__actions {
        margin-bottom: var(--space-10);
    }
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

:focus-visible {
    outline: 2px solid var(--stone-blue);
    outline-offset: 4px;
}

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

/* ==========================================================================
   Picture Element Styles (Added for WebP support)
   ========================================================================== */

.material-card__image picture {
    display: block;
    width: 100%;
    height: 100%;
}

.material-card__image picture img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.stone-card__texture picture {
    position: absolute;
    inset: 0;
    display: block;
}

.stone-card__texture picture img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}