/* ============================================
   STONE FILM — Luxury + Animation + Mobile
   ============================================ */

:root {
    --black: #0a0a0a;
    --charcoal: #141414;
    --dark: #1a1a1a;
    --dark-mid: #222222;
    --mid: #333333;
    --grey: #666666;
    --grey-light: #999999;
    --silver: #b0b0b0;
    --pearl: #d4d0c8;
    --cream: #f5f3ef;
    --white: #fafaf8;
    --pure-white: #ffffff;
    --gold: #b8965a;
    --gold-light: #d4b07a;
    --gold-muted: rgba(184, 150, 90, 0.12);
    --font-display: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --max-width: 1140px;
    --radius: 2px;
    --radius-md: 4px;
    --radius-lg: 8px;
    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Carousel Variables */
    --carousel-size: 260px;
    --carousel-radius: 400px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    color: var(--mid);
    background: var(--white);
    line-height: 1.7;
    overflow-x: hidden;
}

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 40px; }

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

::selection { background: var(--gold-muted); color: var(--black); }

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--cream); }
::-webkit-scrollbar-thumb { background: var(--silver); border-radius: 3px; }

/* ---------- Custom Cursor ---------- */
@media (pointer: fine) {
    .cursor-outline {
        position: fixed;
        top: 0;
        left: 0;
        width: 32px;
        height: 32px;
        border: 1px solid rgba(184, 150, 90, 0.4);
        border-radius: 50%;
        transform: translate(-50%, -50%);
        pointer-events: none;
        z-index: 9999;
        transition: width 0.2s ease, height 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, opacity 0.2s ease;
        will-change: transform;
    }

    .cursor-outline.hover {
        width: 48px;
        height: 48px;
        background-color: rgba(184, 150, 90, 0.08);
        border-color: var(--gold-light);
    }
}
@media (pointer: coarse) {
    .cursor-outline { display: none; }
}

/* ---------- Scroll Progress ---------- */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--gold), var(--gold-light));
    z-index: 9999;
    width: 0%;
    transition: width 0.1s linear;
}

/* ---------- Reveal Animations ---------- */
.reveal-up, .reveal-left, .reveal-scale {
    opacity: 0;
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
    transition-delay: var(--delay, 0s);
}

.reveal-up { transform: translateY(40px); }
.reveal-left { transform: translateX(-40px); }
.reveal-scale { transform: scale(0.95); }

.reveal-up.visible { opacity: 1; transform: translateY(0); }
.reveal-left.visible { opacity: 1; transform: translateX(0); }
.reveal-scale.visible { opacity: 1; transform: scale(1); }

/* Hero-specific entrance animations */
.anim-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: heroFadeUp 0.9s var(--ease-out) forwards;
}
.anim-d1 { animation-delay: 0.15s; }
.anim-d2 { animation-delay: 0.3s; }
.anim-d3 { animation-delay: 0.45s; }

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

/* ---------- Navbar ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(250, 250, 248, 0.88);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    transition: all 0.4s ease;
}

.navbar.scrolled {
    background: rgba(250, 250, 248, 0.97);
    box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-brand {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo {
    height: 32px;
    width: auto;
    object-fit: contain;
}

.brand-word-stone { color: var(--black); }
.brand-word-film { color: var(--gold); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    padding: 8px 18px;
    font-size: 0.85rem;
    font-weight: 600; /* Increased contrast */
    color: var(--black); /* Darker text */
    letter-spacing: 0.01em;
    transition: color 0.25s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 18px;
    right: 18px;
    height: 1px;
    background: var(--gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.nav-link:hover { color: var(--black); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-cta {
    margin-left: 16px;
    color: var(--black) !important;
    font-weight: 500;
    border: 1px solid var(--black);
    border-radius: var(--radius);
    padding: 9px 22px;
    transition: all 0.3s ease;
}

.nav-cta::after { display: none; }

.nav-cta:hover {
    background: var(--black);
    color: var(--pure-white) !important;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 8px;
    padding: 6px;
    position: relative;
    width: 28px;
    height: 28px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--black);
    transition: all 0.3s ease;
    position: absolute;
    left: 3px;
}

.nav-toggle span:first-child { top: 8px; }
.nav-toggle span:last-child { bottom: 8px; }

.nav-toggle.active span:first-child {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}

.nav-toggle.active span:last-child {
    bottom: 50%;
    transform: translateY(50%) rotate(-45deg);
}

/* ---------- Immersive Hero ---------- */
.immersive-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: transparent;
}

.hero-background-wrapper {
    position: fixed;
    inset: 0;
    z-index: -1;
    /* Hardware acceleration for smooth scrolling */
    transform: translateZ(0);
}

.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.05);
    animation: slowZoom 25s linear infinite alternate;
}

@keyframes slowZoom {
    0% { transform: scale(1.02); }
    100% { transform: scale(1.1); }
}

.hero-bg-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 50% 45%, rgba(10,10,10,0.72) 0%, rgba(10,10,10,0.45) 50%, rgba(10,10,10,0.2) 100%),
        linear-gradient(to bottom, rgba(10,10,10,0.3) 0%, rgba(10,10,10,0.15) 40%, rgba(10,10,10,0.6) 100%);
}

.hero-shine-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 1;
}

.hero-shine-layer::before,
.hero-shine-layer::after {
    content: '';
    position: absolute;
    inset: 0;
    /* Gloss — crisp defined highlight */
    background-image: linear-gradient(130deg, 
        transparent 0%, 
        transparent 44%, 
        rgba(255, 255, 255, 0.08) 46.5%, 
        rgba(255, 255, 255, 0.35) 49%, 
        rgba(255, 255, 255, 0.55) 50%, 
        rgba(255, 255, 255, 0.35) 51%, 
        rgba(255, 255, 255, 0.08) 53.5%, 
        transparent 56%, 
        transparent 100%);
    background-size: 300% 300%;
    mix-blend-mode: soft-light;
    transition: background-image 0.6s ease;
}

/* JS Scroll Layer */
.hero-shine-layer::before {
    background-position: var(--scroll-pos, 100% 100%);
    opacity: var(--scroll-opacity, 0);
}

/* Auto Animation Layer */
.hero-shine-layer::after {
    opacity: 0;
    animation: autoShine 8s ease-in-out infinite;
}

@keyframes autoShine {
    0%, 65% { background-position: 100% 100%; opacity: 0; }
    72% { opacity: 0.8; }
    85% { opacity: 0.8; }
    100% { background-position: 0% 0%; opacity: 0; }
}

/* Manual Shine Trigger */
.hero-shine-layer.manual-shine-trigger::after {
    animation: manualShine 1.8s ease-in-out forwards !important;
}

@keyframes manualShine {
    0% { background-position: 100% 100%; opacity: 0; }
    20% { opacity: 0.7; }
    80% { opacity: 0.7; }
    100% { background-position: 0% 0%; opacity: 0; }
}

/* Satin */
.hero-background-wrapper.satin-active .hero-shine-layer::before,
.hero-background-wrapper.satin-active .hero-shine-layer::after {
    /* Diffused, muted reflection for matte/satin surfaces */
    background-image: linear-gradient(125deg, 
        transparent 0%, 
        transparent 35%, 
        rgba(255, 255, 255, 0.05) 40%, 
        rgba(255, 255, 255, 0.12) 46%, 
        rgba(255, 255, 255, 0.18) 50%, 
        rgba(255, 255, 255, 0.12) 54%, 
        rgba(255, 255, 255, 0.05) 60%, 
        transparent 65%, 
        transparent 100%);
    mix-blend-mode: screen;
}

.immersive-container {
    position: relative;
    z-index: 2;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding-top: 120px;
    padding-bottom: 80px;
}

.immersive-content {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-eyebrow {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    color: var(--gold);
    margin-bottom: 24px;
    display: inline-block;
    text-shadow: 0 2px 12px rgba(0,0,0,0.8), 0 1px 4px rgba(0,0,0,0.6);
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 5.5vw, 4.8rem);
    font-weight: 300;
    color: var(--pure-white);
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
    text-shadow: 0 4px 32px rgba(0,0,0,0.8), 0 2px 8px rgba(0,0,0,0.6);
}

.italic-serif {
    font-family: 'Times New Roman', Times, serif;
    font-style: italic;
    font-weight: 300;
    color: var(--gold-light);
}

.hero-sub {
    font-size: 1.1rem;
    font-weight: 300;
    color: var(--pearl);
    line-height: 1.7;
    max-width: 480px;
    margin-bottom: 32px;
    text-shadow: 0 2px 16px rgba(0,0,0,0.9), 0 1px 6px rgba(0,0,0,0.7);
}

.hero-slogans {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 48px;
}

.slogan {
    font-size: 0.9rem;
    color: var(--gold-light);
    font-style: italic;
    font-weight: 300;
    letter-spacing: 0.04em;
}

.slogan-dot {
    width: 4px;
    height: 4px;
    background: var(--gold);
    border-radius: 50%;
    opacity: 0.5;
}

.btn-large-luxury {
    padding: 18px 42px;
    font-size: 1.05rem;
    letter-spacing: 0.05em;
    border-radius: 2px;
}

/* Floating Card */
.immersive-floating-card {
    margin-bottom: 30px;
}

.glass-card {
    background: rgba(20, 20, 20, 0.4);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 24px;
    border-radius: 4px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    max-width: 320px;
    box-shadow: 0 24px 64px rgba(0,0,0,0.4);
}

.glass-icon {
    color: var(--gold);
    background: rgba(184, 150, 90, 0.1);
    padding: 12px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.glass-text h4 {
    color: var(--pure-white);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 6px;
}

.glass-text p {
    color: var(--silver);
    font-size: 0.85rem;
    line-height: 1.5;
}

/* Scroll Indicator */
.hero-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 40px;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 16px;
}

.scroll-text {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--silver);
}

.scroll-line-container {
    width: 1px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    position: relative;
    overflow: hidden;
}

.scroll-dot {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 30%;
    background: var(--gold);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(300%); }
}

@media (max-width: 992px) {
    .immersive-container {
        padding-top: 140px;
    }
    
    .hero-bg-gradient {
        background: linear-gradient(to top, rgba(10,10,10,0.95) 0%, rgba(10,10,10,0.8) 50%, rgba(10,10,10,0.4) 100%);
    }

    .hero h1 {
        font-size: clamp(2.4rem, 8vw, 3rem);
    }
}
/* ---------- Finish Selector ---------- */
.hero-finish-selector {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
    margin-bottom: 40px;
}

.finish-label {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--grey-light);
    opacity: 0.8;
}

.finish-toggle-wrapper {
    position: relative;
    display: inline-flex;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 40px;
    padding: 5px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.finish-btn {
    width: 150px;
    position: relative;
    z-index: 2;
    background: transparent;
    border: none;
    color: var(--grey-light);
    font-family: var(--font-body);
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    padding: 10px 0;
    cursor: pointer;
    transition: color 0.4s ease;
    outline: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.finish-btn svg {
    width: 16px;
    height: 16px;
    color: inherit;
    transition: transform 0.3s ease;
}

.finish-btn:hover svg {
    transform: scale(1.1);
}

.finish-btn.active {
    color: var(--black);
}

.finish-glider {
    position: absolute;
    top: 5px;
    left: 5px;
    bottom: 5px;
    width: 150px;
    background: var(--gold);
    border-radius: 30px;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1;
}

.finish-toggle-wrapper.satin-active .finish-glider {
    transform: translateX(150px);
}

/* Background Image Adjustments */
.hero-bg-image {
    transition: filter 0.8s ease;
}

.hero-background-wrapper.satin-active .hero-bg-image {
    filter: contrast(0.85) brightness(0.9) blur(1px);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border: none;
    font-family: var(--font-body);
    font-size: 0.84rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    cursor: pointer;
    transition: all 0.35s var(--ease);
    text-decoration: none;
}

.btn-gold {
    background: var(--gold);
    color: var(--black);
    border-radius: var(--radius);
}

.btn-gold:hover {
    background: var(--gold-light);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(184, 150, 90, 0.25);
}

.btn-ghost {
    background: transparent;
    color: var(--silver);
    padding: 14px 20px;
    font-weight: 400;
    letter-spacing: 0.04em;
}

.btn-ghost:hover { color: var(--pure-white); }

.btn-outline-light {
    background: transparent;
    color: var(--pure-white);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius);
}

.btn-outline-light:hover {
    border-color: rgba(255,255,255,0.5);
    background: rgba(255,255,255,0.05);
}

.btn-full { width: 100%; padding: 16px 32px; }

/* ---------- Marquees ---------- */
.marquee-section {
    width: 100%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 2;
}

.marquee-container {
    width: 100%;
    padding: 16px 0;
    display: flex;
    white-space: nowrap;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.marquee-dark {
    background: var(--charcoal);
    color: var(--white);
    border-bottom: none;
}

.marquee-light {
    background: var(--cream);
    color: var(--black);
}

.marquee-track {
    display: inline-flex;
}

.track-left {
    animation: scrollLeft 45s linear infinite;
}

.track-right {
    animation: scrollRight 45s linear infinite;
}

.marquee-content {
    display: inline-flex;
    align-items: center;
}

.marquee-content span {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    padding: 0 32px;
}

.marquee-content .dot {
    color: var(--gold);
    font-size: 1.2rem;
    padding: 0;
}

.marquee-light .dot {
    color: rgba(0,0,0,0.3);
}

@keyframes scrollLeft {
    0% { transform: translateX(0); }
    100% { transform: translateX(-33.3333%); }
}

@keyframes scrollRight {
    0% { transform: translateX(-33.3333%); }
    100% { transform: translateX(0); }
}

/* ---------- Manifesto Section ---------- */
.manifesto-section {
    background: var(--white);
    padding: 100px 0 80px;
    text-align: center;
}

.manifesto-text {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 4vw, 3.8rem);
    font-weight: 300;
    color: var(--black);
    line-height: 1.25;
    letter-spacing: -0.03em;
}

.manifesto-sub {
    font-family: 'Times New Roman', Times, serif;
    font-style: italic;
    color: var(--gold);
    font-size: 0.9em;
    font-weight: 400;
    margin-top: 8px;
    display: inline-block;
}

/* ---------- Sections ---------- */
.section { 
    padding: 120px 0; 
    background: var(--white);
    position: relative;
    z-index: 2;
}

.section-alt { background: var(--cream); }

.section-dark {
    background: var(--charcoal);
    color: var(--pure-white);
}

.section-dark .section-title { color: var(--pure-white); }
.section-dark .section-eyebrow { color: var(--gold); }

.section-header { max-width: 540px; margin-bottom: 72px; }

.section-eyebrow {
    font-size: 0.68rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--gold);
    margin-bottom: 20px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.7rem, 3vw, 2.5rem);
    font-weight: 300;
    color: var(--black);
    letter-spacing: -0.03em;
    line-height: 1.2;
}



/* ---------- Split (Why Us) ---------- */
.split-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.stacked-layout {
    display: flex;
    flex-direction: column;
    gap: 64px;
}

.stacked-layout .split-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stacked-layout .section-header { margin-bottom: 48px; }

.stacked-layout .features-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    text-align: left;
    max-width: 1000px;
    margin: 0 auto;
}

.split-content .section-header { margin-bottom: 48px; }

.features-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.feature-item {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.feature-line {
    width: 2px;
    min-height: 48px;
    background: linear-gradient(180deg, var(--gold), rgba(184, 150, 90, 0.1));
    flex-shrink: 0;
    margin-top: 2px;
    border-radius: 1px;
}

.feature-item h4 {
    font-family: var(--font-display);
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--pure-white);
    margin-bottom: 5px;
}

.feature-item p {
    font-size: 0.84rem;
    color: var(--silver);
    line-height: 1.7;
    font-weight: 300;
}

/* Visual demo */
.visual-card {
    background: var(--dark-mid);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: var(--radius-lg);
    overflow: hidden;
    padding: 28px;
}

/* ---------- Interactive Comparison Slider ---------- */
.split-slider-container {
    position: relative;
    width: 100%;
    height: 520px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #000;
    box-shadow: 0 15px 40px rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.05);
}

.slider-base-img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    transition: opacity 0.4s ease;
}

.slider-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    clip-path: polygon(50% 0, 100% 0, 100% 100%, 50% 100%);
}

.slider-overlay-img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.4s ease;
}

.slider-handle {
    position: absolute;
    top: 0;
    left: 50%;
    height: 100%;
    width: 2px;
    z-index: 3;
    pointer-events: none;
    transform: translateX(-50%);
}

.handle-line {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.5);
    box-shadow: 0 0 15px rgba(0,0,0,0.8);
}

.handle-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    background: rgba(10, 10, 10, 0.65);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4px;
    color: var(--gold);
    box-shadow: 0 8px 24px rgba(0,0,0,0.6), inset 0 0 12px rgba(184, 150, 90, 0.15);
    border: 1px solid rgba(184, 150, 90, 0.4);
    transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.split-slider-container:hover .handle-btn {
    background: rgba(15, 15, 15, 0.85);
    border-color: rgba(184, 150, 90, 0.7);
    transform: translate(-50%, -50%) scale(1.08);
}

.slider-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    z-index: 4;
    cursor: ew-resize;
    margin: 0;
}

/* Slider Elegant Typography Badge */
.slider-elegant-text {
    position: absolute;
    top: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    pointer-events: none;
    text-align: center;
    width: 90%;
}

.slider-elegant-text span {
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--gold);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-shadow: 0 4px 15px rgba(0,0,0,0.8), 0 0 5px rgba(0,0,0,0.5);
    background: rgba(0, 0, 0, 0.85); /* Increased contrast */
    backdrop-filter: blur(10px);
    padding: 10px 20px;
    border-radius: 30px;
    border: 1px solid rgba(184, 150, 90, 0.4);
    box-shadow: 0 5px 20px rgba(0,0,0,0.8);
}

/* Static Side Labels */
.bna-side-label {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(10, 10, 10, 0.7);
    color: var(--pure-white);
    padding: 8px 14px;
    border-radius: 30px;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    backdrop-filter: blur(10px);
    white-space: nowrap;
    border: 1px solid rgba(255,255,255,0.15);
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    z-index: 5;
    pointer-events: none;
}

.label-left-side {
    left: 24px;
}

.label-right-side {
    right: 24px;
    color: var(--gold);
    border-color: rgba(184, 150, 90, 0.3);
}

/* ---------- Process Grid ---------- */
.process-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 48px;
}

.process-card {
    background: rgba(250, 250, 248, 0.5);
    border: 1px solid rgba(0, 0, 0, 0.04);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease, border-color 0.4s ease;
}

.process-card:hover {
    border-color: rgba(184, 150, 90, 0.3);
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0,0,0,0.06);
}

.process-image-wrapper {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.process-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.process-num-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(8px);
    color: var(--gold);
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 20px;
    border: 1px solid rgba(184, 150, 90, 0.3);
    letter-spacing: 0.05em;
    z-index: 2;
}

.process-content {
    padding: 32px 24px;
}

.process-content h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--black);
    margin-bottom: 12px;
}

.process-content p {
    font-size: 0.85rem;
    color: var(--grey);
    line-height: 1.6;
    font-weight: 400;
}

/* ---------- Stone Showcase ---------- */
.stone-showcase {
    margin-top: 48px;
}

/* ---------- Stone Timer ---------- */
.stone-timer {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 28px;
    height: 28px;
    z-index: 10;
}

.stone-timer svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.timer-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.1);
    stroke-width: 2.5;
}

.timer-progress {
    fill: none;
    stroke: var(--gold);
    stroke-width: 2.5;
    stroke-dasharray: 100, 100;
    stroke-dashoffset: 100;
    stroke-linecap: round;
}

.timer-progress.running {
    animation: countdown 7s linear forwards;
}

@keyframes countdown {
    0% { stroke-dashoffset: 100; }
    100% { stroke-dashoffset: 0; }
}

.stone-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
}

.stone-tab {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--white);
    border: 1px solid rgba(0,0,0,0.08);
    border-radius: 40px;
    padding: 6px 20px 6px 6px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    outline: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.02);
}

.stone-tab:hover {
    border-color: rgba(0,0,0,0.2);
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
    transform: translateY(-2px);
}

.stone-tab.active {
    background: var(--black);
    border-color: var(--black);
    transform: translateY(0);
}

.stone-tab span {
    font-family: var(--font-display);
    font-size: 0.88rem;
    color: var(--mid);
    font-weight: 500;
    transition: color 0.3s ease;
}

.stone-tab.active span {
    color: var(--white);
}

.stone-thumb {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-size: cover;
    background-position: center;
    box-shadow: inset 0 0 0 1px rgba(0,0,0,0.1);
}

.stone-panel-container {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--black);
    min-height: 380px;
    box-shadow: 0 24px 64px rgba(0,0,0,0.08);
}

.stone-panel {
    position: absolute;
    inset: 0;
    display: flex;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

.stone-panel.active {
    opacity: 1;
    pointer-events: auto;
    z-index: 2;
}

.stone-panel-bg {
    flex: 1;
    background-size: cover;
    background-position: center;
    position: relative;
}

.stone-panel-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, transparent 30%, rgba(10,10,10,1) 95%);
}

.stone-panel-content {
    width: 45%;
    max-width: 500px;
    background: rgba(10,10,10,1);
    padding: 60px 56px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.stone-panel-content h3 {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 300;
    color: var(--white);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.stone-panel-content p {
    font-size: 0.94rem;
    color: var(--silver);
    line-height: 1.8;
    font-weight: 300;
}

@media (max-width: 900px) {
    .stone-panel { flex-direction: column; }
    .stone-panel-bg { min-height: 240px; }
    .stone-panel-bg::after { background: linear-gradient(to bottom, transparent 30%, rgba(10,10,10,1) 95%); }
    .stone-panel-content { width: 100%; max-width: 100%; padding: 40px 32px; }
}

.surfaces-note {
    font-size: 0.84rem;
    color: var(--grey-light);
    font-weight: 300;
}

/* ---------- Testimonials ---------- */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.testimonial-card {
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: var(--radius-lg);
    padding: 44px 36px 36px;
    background: var(--pure-white);
    transition: all 0.4s var(--ease);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.testimonial-card::before {
    content: '\201C';
    position: absolute;
    top: 20px;
    left: 28px;
    font-family: 'Times New Roman', Times, serif;
    font-size: 4.5rem;
    line-height: 1;
    color: var(--gold);
    opacity: 0.12;
    pointer-events: none;
}

.testimonial-card:hover {
    border-color: rgba(0,0,0,0.12);
    box-shadow: 0 16px 48px rgba(0,0,0,0.07);
    transform: translateY(-4px);
}

.testimonial-stars {
    display: flex;
    gap: 3px;
    margin-bottom: 20px;
}

.testimonial-stars svg {
    width: 14px;
    height: 14px;
    fill: var(--gold);
}

.testimonial-quote {
    font-size: 0.92rem;
    line-height: 1.8;
    color: var(--mid);
    font-weight: 300;
    flex: 1;
    margin-bottom: 28px;
}

.testimonial-author {
    padding-top: 20px;
    border-top: 1px solid rgba(0,0,0,0.05);
    display: flex;
    align-items: center;
    gap: 14px;
}

.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--cream);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--gold);
    flex-shrink: 0;
    border: 1px solid rgba(184, 150, 90, 0.15);
}

.author-name {
    display: block;
    font-family: var(--font-display);
    font-size: 0.84rem;
    font-weight: 500;
    color: var(--black);
}

.author-location {
    display: block;
    font-size: 0.72rem;
    color: var(--grey-light);
    font-weight: 300;
    margin-top: 2px;
}

/* ---------- FAQ ---------- */
.faq-list { max-width: 680px; }

.faq-item { border-bottom: 1px solid rgba(0,0,0,0.07); }

.faq-question {
    padding: 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    gap: 24px;
    user-select: none;
}

.faq-question span {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 400;
    color: var(--black);
    transition: color 0.25s ease;
}

.faq-question:hover span { color: var(--gold); }

.faq-icon {
    width: 20px;
    height: 20px;
    position: relative;
    flex-shrink: 0;
}

.faq-icon span {
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    width: 12px;
    height: 1px;
    background: var(--grey-light);
    transform: translate(-50%, -50%);
    transition: transform 0.3s ease;
}

.faq-icon span::after {
    content: '';
    display: block;
    width: 12px;
    height: 1px;
    background: var(--grey-light);
    transform: rotate(90deg);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.faq-item.open .faq-icon span::after { transform: rotate(0); opacity: 0; }

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s var(--ease);
}

.faq-item.open .faq-answer { max-height: 200px; }

.faq-answer-inner {
    padding: 0 0 24px;
    font-size: 0.86rem;
    color: var(--grey);
    line-height: 1.75;
    font-weight: 300;
}

/* ---------- CTA Section ---------- */
.cta-section {
    background: linear-gradient(135deg, var(--dark) 0%, var(--charcoal) 50%, #1a1510 100%);
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 60% at 50% 50%, rgba(184, 150, 90, 0.05), transparent);
}

.cta-inner {
    position: relative;
    z-index: 1;
}

.cta-section h2 {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 300;
    color: var(--pure-white);
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.cta-section p {
    font-size: 1rem;
    color: var(--silver);
    font-weight: 300;
    margin-bottom: 36px;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    align-items: center;
}

/* ---------- Contact ---------- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-info .section-header { margin-bottom: 24px; }

.contact-desc {
    font-size: 0.92rem;
    color: var(--silver);
    line-height: 1.75;
    font-weight: 300;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-line {
    display: flex;
    align-items: baseline;
    gap: 16px;
    font-size: 0.86rem;
}

.contact-label {
    font-size: 0.65rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--grey-light);
    min-width: 90px;
    flex-shrink: 0;
}

.contact-line a, .contact-line span {
    color: var(--pearl);
    font-weight: 300;
    transition: color 0.2s ease;
}

.contact-line a:hover { color: var(--gold-light); }

.contact-form-wrapper {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.contact-form .form-group { margin-bottom: 18px; }

.contact-form label {
    display: block;
    font-size: 0.65rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(255,255,255,0.35);
    margin-bottom: 8px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 13px 16px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius);
    color: var(--pure-white);
    font-family: var(--font-body);
    font-size: 0.86rem;
    font-weight: 300;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
    resize: vertical;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(255,255,255,0.18); }

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 0 3px var(--gold-muted);
}

.contact-form select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    cursor: pointer;
}

.contact-form select option { background: var(--dark); color: var(--pure-white); }

.form-note {
    text-align: center;
    font-size: 0.72rem;
    color: rgba(255,255,255,0.22);
    margin-top: 14px;
    font-weight: 300;
}

.form-success { text-align: center; padding: 48px 20px; }
.success-icon { color: var(--gold); margin-bottom: 24px; }
.form-success h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--pure-white);
    margin-bottom: 10px;
}
.form-success p { font-size: 0.88rem; color: var(--silver); font-weight: 300; }

/* ---------- Footer ---------- */
.footer {
    background: var(--black);
    padding: 64px 0 0;
    color: var(--grey);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-logo-img {
    height: 28px;
    width: auto;
    object-fit: contain;
    filter: brightness(0.8) contrast(1.2);
}

.footer .brand-word-stone {
    color: var(--pure-white);
}

.footer-desc {
    font-size: 0.82rem;
    color: var(--grey-light);
    line-height: 1.7;
    font-weight: 300;
    max-width: 260px;
}

.footer-col h4 {
    font-family: var(--font-display);
    font-size: 0.65rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--grey-light);
    margin-bottom: 20px;
}

.footer-col a, .footer-col span {
    display: block;
    font-size: 0.82rem;
    color: var(--grey-light);
    font-weight: 300;
    padding: 3px 0;
    transition: color 0.2s ease;
}

.footer-col a:hover { color: var(--pearl); }

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.7rem;
    color: var(--grey-light);
    font-weight: 300;
    letter-spacing: 0.02em;
}

/* ============================================
   RESPONSIVE — Tablet & Mobile
   ============================================ */

@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { max-width: 480px; }
    .services-grid { grid-template-columns: 1fr; }
    .split-grid { grid-template-columns: 1fr; gap: 48px; }
    .testimonials-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .container { padding: 0 20px; }

    /* Nav */
    .nav-links {
        display: flex;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--white);
        flex-direction: column;
        padding: 100px 32px 32px;
        gap: 0;
        z-index: 999;
        opacity: 0;
        pointer-events: none;
        transform: translateY(-20px);
        transition: opacity 0.4s ease, transform 0.4s ease;
    }

    .nav-links.open { 
        opacity: 1; 
        pointer-events: auto; 
        transform: translateY(0); 
    }

    .nav-links .nav-link {
        padding: 16px 0;
        font-size: 1.1rem;
        font-weight: 400;
        color: var(--black);
        border-bottom: 1px solid rgba(0,0,0,0.05);
    }

    .nav-links .nav-link::after { display: none; }

    .nav-links .nav-cta {
        margin-left: 0;
        margin-top: 24px;
        text-align: center;
        border: 1px solid var(--black);
        border-bottom: 1px solid var(--black);
        padding: 16px;
        font-size: 1rem;
    }

    .nav-toggle { display: flex; z-index: 1001; }

    /* Hero */
    .section { padding: 80px 0; }

    .hero-grid { padding: 48px 20px; }

    .hero h1 { font-size: clamp(1.9rem, 7vw, 2.6rem); }
    .hero-sub { font-size: 0.92rem; }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-actions .btn { text-align: center; }

    .hero-visual { max-width: 100%; }

    .hero-image-wrapper { height: 320px; }

    .hero-slogans { flex-direction: column; gap: 4px; align-items: flex-start; }
    .slogan-dot { display: none; }

    .hero-scroll-line { display: none; }

    /* Trust */
    .trust-strip-inner { flex-wrap: wrap; }
    .trust-item { flex: 0 0 50%; padding: 16px 8px; }
    .trust-divider { display: none; }
    .trust-number { font-size: 1.4rem; }
    .trust-label { font-size: 0.6rem; }

    /* Services */
    .service-card { padding: 36px 24px; }

    /* Split */
    .visual-card { padding: 16px; }
    .stone-demo { height: 220px; }

    /* Process */
    .process-grid { grid-template-columns: 1fr; gap: 24px; }

    /* Surfaces */
    .surfaces-grid { gap: 8px; }
    .surface-chip { padding: 10px 18px; font-size: 0.8rem; }

    /* Testimonials */
    .testimonials-grid { grid-template-columns: 1fr; }
    .testimonial-card { padding: 28px 24px; }

    /* FAQ */
    .faq-list { max-width: 100%; }

    /* CTA */
    .cta-section { padding: 64px 0; }
    .cta-actions { flex-direction: column; align-items: stretch; }
    .cta-actions .btn { text-align: center; }

    /* Contact */
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .contact-form-wrapper { padding: 24px; }
    .contact-form .form-row { grid-template-columns: 1fr; }

    /* Footer */
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-desc { max-width: 100%; }
}

@media (max-width: 420px) {
    .hero h1 { font-size: 1.75rem; }
    .hero-grid { padding: 36px 16px; }
    .trust-item { flex: 0 0 50%; }
}

/* ArrowHit Agency Branding Strip */
.arrowhit-strip {
    background: #0a0a0a;             /* Deepest black for contrast */
    padding: 1.25rem 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.02);
    width: 100%;
}

.arrowhit-strip a {
    font-size: 0.9rem;
    color: #737373;                  /* Subtle grey */
    display: inline-flex;            /* Centers icon/text precisely */
    align-items: center;
    gap: 0.35rem;
    text-decoration: none;           /* Removes default underline */
}

.arrowhit-strip a span {
    color: var(--pure-white, #ffffff);    /* Default site light color fallback */
    font-weight: 700;
    letter-spacing: 0.5px;
    transition: color 0.3s ease;
}

.arrowhit-strip a:hover span {
    color: #df5826;                  /* ArrowHit Brand Orange */
}